WO2015088297A1 - Device for reinforcing concrete column and method for reinforcing concrete column using same - Google Patents

Abstract

The present invention relates to a device for reinforcing a concrete column and a method for reinforcing a concrete column using the same and, more particularly, to a device for reinforcing a concrete column and a method for reinforcing a concrete column, which can exhibit a higher degree of resistance to an external force applied to a concrete column, thereby preventing compression fracture resulting from the external force applied to the concrete column. A device for reinforcing a concrete column according to the present invention comprises: a plurality of reinforcement plates installed to surround the outer peripheral surface of a column made of concrete; a first fastening member installed on a reinforcement plate on one side with reference to the column; and a second fastening member comprising a head portion supported on a reinforcement plate on the other side with reference to the column, a wire extending from the head portion towards the first fastening member via a through-hole formed on the column, and a screw coupling portion formed on an end of the wire and screw-coupled to the first fastening member, wherein the screw coupling portion is fastened to the first fastening member such that a tensile force is applied to the wire, thereby introducing post tension to the column.

Description

Reinforcement device of concrete column and reinforcement method of concrete column using same

The present invention relates to a reinforcing device for a concrete column and a method for reinforcing a concrete column using the same, and more particularly, to prevent the compressive failure from occurring due to the external force applied to the concrete column, and to the external force applied to the concrete column. The present invention relates to a reinforcing device for a concrete column and a method for reinforcing a concrete column capable of exhibiting high strength.

The building is generally composed of a plate or a massive structure and a pillar that physically supports the superstructures located above. Therefore, the column must be able to withstand the load of the structure and other loads applied thereon, and also to withstand the external force applied in the horizontal direction such as earthquake or wind pressure. If the column fails to withstand it, it collapses, and the superstructures that are physically supported there will also be unable to escape collapse.

Various methods such as fiber reinforcement, steel plate reinforcement, and cross-sectional expansion are applied to reinforce the concrete column according to the site conditions. This method is a type of wrapping the exterior of the concrete column with one-way fiber sheets, fiber boards and steel sheets, and concrete. It is common to attach the fiber sheet or the like to a concrete column using a resin.

The method of reinforcing concrete columns using fiber sheets, such as carbon fibers or aramid fibers, has an excellent load-bearing effect while increasing the flexibility in the transverse direction.

In addition, the above-mentioned reinforcement method is applicable to existing concrete columns, but the application in the manufacturing step of the pillar member is inappropriate.

In general, a method of introducing post-tension using a steel wire is used as a method for increasing the strength by applying a restraining effect to a column, but has a disadvantage that the strength increase effect is not stable and the construction is complicated.

The present invention is to solve the conventional problems as described above, can be effectively reinforced by introducing a post-tension to the constructed concrete pillars, reinforcement device of the concrete column with improved convenience of construction and reinforcement method of the concrete pillar using the same The purpose is to provide.

In addition, the present invention by installing a mechanism capable of introducing post-tension in the process of constructing the concrete pillar in the formwork, by pouring concrete to form a column, and then attaching a restraint member using a steel sheet or the like to introduce post tension The purpose of the present invention is to provide a method of reinforcing concrete columns that can increase the strength and strength of the concrete columns.

Reinforcement device for a concrete pillar according to the present invention for achieving the above object is a plurality of reinforcement plate is installed to surround the outer peripheral surface of the pillar formed of concrete, and the first fastening is installed on one side of the reinforcement plate centered on the pillar A member, a head portion supported by the reinforcement plate on the other side of the pillar, a wire extending from the head portion toward the first fastening member through a through hole formed in the pillar, and an end portion of the wire. And a second fastening member including a screw coupling part screwed to the first fastening member, and fastening the screw coupling part to the first fastening member so that a tension force is applied to the wire, thereby introducing post tension into the pillar. It is formed to be.

The first fastening member includes a coupling part formed to enter a through hole of the pillar through a fastening hole formed in the reinforcing plate, and a locking part formed at an end of the coupling part and having a larger diameter than the fastening hole. A hollow is formed to penetrate the portion and the engaging portion, a screw thread is formed on the inner circumferential surface, the screw coupling portion is formed of a cylindrical body having an outer diameter corresponding to the diameter of the hollow, and the head portion is fastening formed in the reinforcing plate It is preferable to have a stopper having an outer diameter larger than that of the hole, and a spring washer positioned between the stopper and the reinforcement plate and formed to increase in diameter as it extends from the stopper toward the reinforcement plate.

The pillar is formed in the shape of a square pillar, the through hole is a first through hole extending to penetrate two opposite surfaces of the square pillar, and formed on the upper or lower portion of the first through hole and And a second through hole extending through two surfaces of the pillars facing each other so as to extend along an intersecting direction, wherein the reinforcing plate is provided on each of two side surfaces through which the first through hole passes. And, it is preferable to have a second reinforcing plate respectively provided on two side surfaces through which the second through hole.

An edge cover member may be further provided at four corners of the pillar.

The reinforcement method of the concrete pillar according to the present invention is for reinforcement of a pillar formed of concrete, and a drilling step of drilling a through hole crossing the inside of the pillar, and fastening corresponding to the through hole on an outer circumferential surface of the pillar. A reinforcing plate installation step of padding a reinforcement plate having a hole formed therein; a first fastening member installation step of installing a first fastening member inserted into one side of the through hole in a reinforcement plate on one side of the pillar; And a second fastening member installation step of installing a second fastening member having a head portion supported by the reinforcing plate on the other side, a wire extending from the head portion, and a screw coupling portion formed at an end of the wire. The second fastening member may include the head portion supported by the reinforcement plate, and the screw coupling portion and the wire may connect the fastening hole and the through hole of the other reinforcement plate. After penetrating and extending toward the first fastening member, the screw coupling part is screwed into the first fastening hole so that the post tension is introduced into the pillar.

The pillar is formed in the shape of a square pillar, the drilling step is a first drilling step for drilling the first through-hole by drilling in a first direction across the pillar, and the first or lower portion of the first through hole And a second drilling step of drilling the second through hole in a second direction crossing the extending direction of the first through hole, wherein the first fastening member is installed in one direction of the first through hole and the second through hole, respectively. The second fastening member may be installed such that the head is supported by the reinforcing plate on the other side of the first through hole and the second through hole.

A corner cover member installation step of installing a corner cover member surrounding the side edges of the pillars with respect to the four corners of the pillar may be further provided.

The reinforcement method of the concrete pillar according to the present invention includes a fastening rod installation step of installing a fastening rod to penetrate the concrete pillar, and a cover plate installation step of installing a cover plate on the outer surface of the column respectively corresponding to both ends of the fastening rod; The cover plate coupling step of installing a fixing member to be fastened to the end of the fastening rod through the cover plate to provide a pressing force to the pillar by moving the cover plates correspondingly installed.

The fastening rod may have a Teflon sheet formed on the outer circumferential surface thereof so as not to be bonded to the concrete mortar being poured. The pillar is cured in a columnar shape of a square cross-section, the fastening rods extend in a direction connecting two opposite surfaces of the opposite side of the pillar and a plurality of first fastening rods formed to be spaced up and down, the first fastening A second fastening rod positioned between the rods and extending in a direction crossing the first fastening rod and extending across two opposing surfaces of the other side of the pillar, and the cover plate covers two opposing surfaces on one side thereof; It is preferred to include a first cover plate and two second cover plates covering two opposing surfaces on the other side.

The cover plate installation step may further include a corner cover member installation step of installing a corner cover member surrounding the four corners of the pillar.

In addition, the fastening rod installation step, the fastening rod installation step is installed so that the fastening rod is embedded in the concrete mortar that is placed inside the formwork to form the pillar, the fastening bolt enters between the end of the fastening rod and the formwork. It may be further provided with a filling blocking member installation step of installing a filling blocking member for blocking the filling of the concrete mortar between the fastening rod and the formwork to form an entrance space.

The filling blocking member may include a blocking sheet having one end fixed to an outer circumferential surface of the fastening rod, extending toward the formwork, and protruding to an outside of the formwork through a through hole formed in the formwork to be fixed to the formwork, or The filling blocking member is inserted into the formwork from the outside of the formwork through the through hole of the formwork, the end portion can be inserted into the hollow of the fastening rod, and through the through hole from the end of the insert portion It may be formed to include an extension that protrudes outwardly of the formwork.

The fastening bolt is coupled to the upper portion of the head portion, the fastening bolt is fastened to the fastening rod may be further provided with a pin tail that is separated from the head portion when a tensile force greater than the size set in the fastening rod and the fastening bolt.

The reinforcement apparatus and the method of reinforcing the concrete pillars according to the present invention has an advantage that the effective reinforcement is possible to prevent the compression destruction of the concrete column by the external force acting on the concrete column while minimizing the damage of the existing concrete structure.

The reinforcement method of the concrete pillar according to the present invention can construct a concrete column including a reinforcing means capable of effectively restraining the concrete column after construction in order to more effectively resist the external force acting on the concrete column. Simple, withstand strength is stable and has an excellent advantage.

1 is a perspective view showing a column in which a reinforcement device of a concrete pillar according to the present invention is installed;

Figure 2 is an exploded perspective view showing a reinforcement device of a concrete column mounted to the pillar shown in Figure 1,

3 is a cross-sectional plan view of the column reinforced through a reinforcement device of the concrete column,

4 is a perspective view showing a first fastening member and a second fastening member;

5 and 6 are cross-sectional views showing a state in which the second fastening member is coupled to the first fastening member;

Figure 7 is a perspective view showing another embodiment of the reinforcement device of the concrete column,

8 is an exploded perspective view of the reinforcing device of the concrete column shown in FIG.

9 is a perspective view showing a drilling step of the reinforcement method of the concrete column according to the present invention;

10 is a perspective view showing a reinforcing plate installation step,

11 is a perspective view illustrating a step of installing a first fastening member;

12 is a perspective view illustrating a step of installing a second fastening member;

Figure 13 is an exploded perspective view showing a concrete column formed by a method of reinforcing concrete pillars according to another embodiment of the present invention,

14 is a plan sectional view of the concrete column of FIG.

15 is a perspective view showing the reinforcement step of the reinforcement method of the concrete column of the present invention,

Figure 16 is a perspective view showing a fastening rod installation step of installing a fastening rod to the reinforcement bar,

17 is a partial excerpt perspective view showing a state in which a fastening rod is installed in a rebar;

18 is a perspective view showing a concrete mortar pouring step,

19 is a cross-sectional view showing a state in which the cover film is constructed to form a passage between the fastening rod and the formwork in the concrete mortar pouring step,

20 is a perspective view showing a passage forming member fastened to the fastening rod to form a passage between the fastening rod and the formwork;

Figure 21 is a perspective view showing a cover plate coupling step,

Figure 22 is a perspective view showing another embodiment of the fastening bolt for the coupling of the cover plate,

23 is a cross-sectional view showing a process of fastening the fastening bolt of Figure 22,

24 is a perspective view showing another embodiment of a concrete pillar further comprising a corner cover member;

25 is a perspective view showing the installation step of the corner cover member,

FIG. 26 is a perspective view illustrating a cover plate coupling step of being fastened after installation of the corner cover member of FIG. 25; FIG.

FIG. 27 is a perspective view illustrating a coupled state of the concrete pillar further including the edge cover member of FIG. 14; FIG.

28 is an exploded perspective view showing a concrete column constructed in accordance with a method of reinforcing a concrete column according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the reinforcing device of the concrete pillar according to the present invention.

1 to 6 show an embodiment of the reinforcing device of the concrete pillar according to the present invention. Referring to the drawings, the reinforcement device 100 of the concrete pillar according to the present invention is the first, second reinforcing plates 121 and 122 surrounding the outer circumferential surface of the pillar 10 made of concrete, the first fastening member 140 and It includes a second fastening member 150.

1 and 2, the pillar 10 has a rectangular pillar shape, and a first through hole 111 is formed along a first direction penetrating two opposite surfaces. The first through hole 111 extends in a direction crossing the first through hole 111 and penetrates through two remaining surfaces on which the first through hole 111 is not formed. 2 through-holes 112 are formed.

The reinforcement plate may include a first reinforcement plate 121 installed on two surfaces on which the first through hole 111 is formed, and a second reinforcement plate installed on two surfaces on which the second through hole 112 is formed ( 122).

A first fastening hole 123 corresponding to the first through hole 111 is formed in the first reinforcing plate 121, and a second corresponding to the second through hole 112 is formed in the second reinforcing plate 122. 2 fastening holes 124 are formed.

The first fastening member 140 and the second fastening member 150 are respectively installed on one side and the other side of the first reinforcing plate 121 or the second reinforcing plate 122 facing each other, thereby reinforcing the first and second reinforcing members. It is for introducing the post tension into the pillar 10 while fixing the plates 121 and 122 in close contact with the pillar 10.

The first fastening member 140 is connected to the first through hole 111 through a first fastening hole 123 formed in the first reinforcing plate 121 of one of the two first reinforcing plates 121 facing each other. A cylindrical coupling portion 142 is inserted, and a locking portion 141 is formed at the end of the coupling portion 142 and has a diameter larger than that of the first fastening hole 123.

The locking portion 141 is formed in the shape of a hexagonal column so as to be gripped by a fastening tool such as a spanner, and as shown in FIG. 3, a hollow penetrating the coupling portion 142 and the locking portion 141. 143 is formed penetrating along the longitudinal direction. In addition, a screw thread is formed on the inner circumferential surface formed by the hollow 143 for coupling with the second fastening member 150 described later.

The second fastening member 150 includes a head part supported by the other first reinforcing plate 121, a wire 154 extending from the head part, and a screw coupling part 155 connected to the wire 154. Include.

The head portion extends toward the first reinforcing plate 121 and the stopper 152 having a larger diameter than the first fastening hole 123 so as not to pass through the first fastening hole 123. It includes a spring washer 153 that is larger in diameter as it extends toward the first reinforcing plate 121.

The wire 154 extends from the stopper 152, and interconnects the screw coupling portion 155 and the head portion inserted through the first through hole 111.

The screw coupling portion 155 has an outer diameter corresponding to the hollow 143 of the first fastening member 140, and is screwed into the hollow 143 of the first fastening member 140 on the outer circumferential surface Threads are formed. As described above, the screw coupling portion 155 is connected to the head through the wire 154, and the screw is inserted into the end of the screw coupling portion 155 by using a tool inserted from the outside of the first fastening member 140. The holding protrusion 156 is formed to protrude so as to rotate the coupling portion 155.

After inserting the first fastening member 140 through one side of the first reinforcing plate 121 and inserting the screw coupling part 155 from the other side of the first reinforcing plate 121, the screw coupling part ( When the screw 155 is screwed to the first fastening member 140, the screw coupling part 155 is inserted into the first fastening member 140 while the head is supported by the other first reinforcing plate 121. Post tension is introduced into column 10 as 154 is tensioned.

The first fastening member 140 and the second fastening member 150 are respectively installed on the second reinforcing plates 122 on both sides in the same manner as described above, and then extend along the second through hole 112 to form the first fastening member 140 and the second fastening member 150. Post tension is also introduced along the extending direction of the second through hole 112 that crosses the extending direction of the through hole 111.

On the other hand, Figure 7 and Figure 8 shows another embodiment of the reinforcement device 100 of the concrete pillar according to the present invention. The reinforcement device 100 of the concrete pillar according to the present embodiment further includes an edge cover member 130 installed at four corners of the concrete pillar 10 formed in a square shape.

The edge cover member 130 is installed to cover two surfaces of the first reinforcing plate 121 and the second reinforcing plate 122 facing each other. In this state, the first reinforcing plate 121 and the first reinforcing plate ( When the edge portion of the pillar 10 to which the 121 is connected is exposed while external force is applied to the pillar 10, the concrete may be released through the corner portion.

Therefore, to prevent this, the corner cover member 130 having a cross section formed in a 'b' shape is installed at four corners of the column 10, and the corner cover member 130 is provided with the first reinforcing plate 121 and Covering and fixing through the second reinforcing plate 122 blocks the space from which the concrete can escape.

The first and second reinforcing plates 121 and 122 and the configuration of the first fastening member 140 and the second fastening member 150 according to the present embodiment are the same as described in the previous embodiment, so the same reference numerals will be given. Omit.

A method of reinforcing the concrete column 10 using the reinforcement device 100 of the concrete column according to the present invention as described above will be described in detail with reference to FIGS. 9 to 12.

9 to 12, the reinforcement method of the concrete pillar 10 according to the present invention firstly, extends along a direction crossing each other with the concrete pillar 10 and is spaced vertically apart from the first through hole 111. And a second through hole 112 (first drilling step and second drilling step).

In this step, the pillar 10 formed of the concrete is bored, and the first through hole 111 and the second through hole have a diameter corresponding to the outer diameter of the coupling part 142 of the first fastening member 140 as described above. Perforate 112.

After the first through hole 111 and the second through hole 112 are drilled, the first reinforcement plate 121 and the second reinforcement plate 122 are attached to the outer surface of the column 10, respectively (first reinforcement). The plate 121 is installed, the second reinforcement plate 122 is installed), and the reinforcing plate is fixed to the pillar 10 through the first fastening member 140 and the second fastening member 150. (First fastening member 140 installation step, second fastening member 150 installation step)

Before the first fastening member 140 and the second fastening member 150 are installed, the first and second reinforcing plates 121 and 122 may be adhesively fixed to the pillar 10 through a separate adhesive.

The first fastening member 140 has a first through hole through the first fastening hole 123 or the second fastening hole 124 formed in the first reinforcing plate 121 and the second reinforcing plate 122. The coupling part 142 is inserted into one side of the 111 or the second through hole 112, and the screw of the second fastening member 150 from the first reinforcing plate 121 or the second reinforcing plate 122 on the other side. Inserting the coupling portion 155 is screwed to the first fastening member 140.

In addition, when the screw coupling portion 155 is coupled to the first fastening member 140, a post tension is introduced into the pillar 10 by introducing a tensile force of a predetermined size to the wire 154.

In addition, although not shown in the drawings, when the edge cover member 130 is further provided as in the second embodiment, the first and second reinforcing holes 111 and 112 are drilled, and then the first and second reinforcement plates 121 and 122. Before installing the corner cover member 130 is first installed on the four corners of the column 10 and proceeds to the subsequent process.

On the other hand, Figure 13 to Figure 21 shows another embodiment of the method of reinforcing the concrete pillar according to the present invention.

13 to 21, the concrete pillars 200 formed by the reinforcement method of the concrete pillars according to the present invention have a rectangular cross section formed by pouring concrete mortar 220 as shown in FIGS. 13 to 18. A first fastening rod 231 and a second fastening rod 232 installed along a direction connecting the two opposing surfaces on one side and the two opposing surfaces on the other side respectively facing the pillar body 260 of the The reinforcing plate is padded on the outer circumferential surface of the main body 260 and then formed by fastening the fastening bolts 280.

As shown in FIG. 14, the first fastening rods 231 and the second fastening rods 232 are formed relatively shorter than the separation distance between the outer circumferential surfaces of the column body 260, respectively, and the first fastening rods 231. ) And the second fastening rod 232 are not bonded to the pillar body 260, and the first fastening plate 271 and the second cover plate 273 are fastened to each other by the fastening bolts 280. It is coupled to the rod 231 and the second fastening rod 232 to reinforce the strength of the column body 260 against the external force.

Meanwhile, the concrete pillar 200 formed by the method of reinforcing the concrete pillar of the present invention may be applied to the pillar body 260 formed to have a circular cross section by pouring the concrete mortar 220 as shown in FIG. 28. . At this time, the first and second fastening rods 231 and 232 are embedded in the pillar body 260 to be orthogonal to each other. After the cover plate is padded on the outer circumferential surface of the pillar body 260, the fastening bolts 280 are fastened to the first and second fastening rods 231 and 232 to fix the cover plate to the outer circumferential surface of the pillar body 260. At this time, the cover plate 270 is preferably formed to be curved in an arc shape corresponding to the curvature of the outer peripheral surface of the pillar body (260).

The concrete pillar 200 constructed by the reinforcement method of the concrete pillar according to the present invention is not fastening the cover plate 270 to the pillar body 260 is fastening rod is inserted into the pillar body 260 in a non-adhesive state Since it is coupled to the 230, the compressive force is applied to the column body 260 by the cover plate 270 is to strengthen the strength of the column body 260.

The construction process of the concrete column 200 having the above configuration is as follows.

○ Reinforcement step

First, as shown in FIG. 15, the reinforcing bar 210 for constructing the concrete pillar at the construction position of the pillar is reinforced. Reinforcing bar 210 is a plurality of extending upward from the support surface, a plurality of reinforcing bars 210 arranged in a matrix form as in this embodiment may be formed to extend upwards, or may extend upward to form a cylindrical shape.

The shape or method of reinforcing the reinforcement 210 is the same as the reinforcement 210 reinforcement work of the conventional concrete column 200, the reinforcement 210 can be made in various forms and manners.

○ Installation stage of fastening rod

After the reinforcing bar 210 is completed, as shown in FIG. 16, the fastening bar 230 is installed to be supported by the reinforcing bar 210.

The fastening rod 230 is a hollow round rod having a thread formed on the inner circumferential surfaces of both ends, and has a relatively short length compared to the distance between the opposing surfaces of the column body 260 formed through the mortar pouring step described later. Install.

Fastening rod 230 is preferably formed of steel, when the curing by pouring concrete mortar 220, as shown in Figure 17 so that the fastening rod 230 is attached to the concrete mortar 220 is not fixed The teflon sheet 233 is installed on the outer circumferential surface of the fastening rod 230. Thus, by constructing the Teflon sheet 233, even after the concrete mortar 220 is cured, the fastening rod 230 is not fixed to the column body 260, and is movable in the longitudinal direction inside the column body 260. do.

In the present embodiment, the teflon sheet 233 was constructed on the outer circumferential surface of the fastening rod 230 in order to prevent the fastening rod 230 from being bonded to the column body 260 during the construction of the column body 260. Various fastening means for preventing the fastening rod 230 from being adhered to the pillar body 260 formed by curing the concrete mortar 220 may be applied.

In addition, the fastening rod 230 includes a first fastening rod 231 extending along one direction and a second fastening rod 232 extending along a direction intersecting with the first fastening rod 231. The rods 231 are installed at the same height so as to be spaced apart from each other up and down, and the second fastening rods 232 are installed so as not to interfere with the first fastening rods 231 between the first fastening rods 231. do.

○ Formwork installation stage

After coupling the fastening rods 230 to the reinforcing bar 210, formwork 250 for placing concrete is installed outside the reinforcing bar 210.

Four plate-shaped formwork 250 is connected to form a column body 260 having a rectangular cross section to form a pouring space in which concrete is poured. The formwork 250 has a first fastening rod 231 or The through holes 251 are formed at positions corresponding to the hollows of the second fastening rods 232. On the other hand, the formwork installation step further comprises a filling blocking member.

○ Installation stage of filling blocking member

After the formwork 250 is installed, the filling blocking member 240 is installed between the formwork 250 and the fastening rod 230.

Filling blocking member 240 is a mortar of the concrete to secure the entry space for the fastening bolt 280 to be described later from the outer circumferential surface of the column body 260 after the curing of the column body 260 to the fastening rod 230 Before the pouring of the 220 is to block the filling of the concrete mortar 220 in the corresponding section.

As shown in FIG. 19, the filling blocking member 240 may include a blocking sheet having one end fixed to an end of the fastening rod 230 and the other end fixed to the formwork 250.

Filling blocking member 240 of the present embodiment is one end is fixed to the fastening rod 230 so as to surround the outer peripheral surface of the end of the fastening rod 230 and the other end is protruded to the outside of the formwork 250 through the through-hole 251 By being fixed to the formwork 250 to form a cylindrical structure in the space between the formwork 250 and the fastening rod 230.

In this state, when the concrete mortar 220 is poured, the concrete mortar 220 is not filled in the installation area in which the filling blocking member 240 is installed, and then the concrete mortar 220 is cured to form the pillar body 260. After that, the entry space into which the Zaire fastening bolt 280 into which the filling blocking member 240 is installed may be left.

The filling blocking member may be formed in the form shown in FIG.

The filling blocking member 241 illustrated in FIG. 20 has an insertion portion 244 which can be inserted into the hollow of the fastening rod 230, and a form 250 of the formwork 250 through the through hole 251 from the insertion portion 244. It may be formed of a structure including an extension part 243 extending to protrude outward, and an extension part 242 formed at an end of the extension part 243.

The insertion part 244 is formed to correspond to the diameter of the hollow of the fastening rod 230 and is inserted into the hollow, and the extension part 243 is formed to correspond to the outer diameter of the fastening rod 230. The expansion portion 242 has a larger diameter than the through-hole 251, the insertion portion 244 and the extension portion 243 from the outside of the formwork 250 through the through-hole 251 of the formwork 250 After entering into the insertion part 244 is inserted into the hollow of the fastening rod 230 and installed, and then poured and cured the concrete mortar 220, and then remove the filling blocking member 241 of the column body 260 It is possible to form an entry section through which the fastening bolt 280 may enter the fastening rod 230 on the outer circumferential surface.

The filling blocking member 241 of the present embodiment also has a Teflon sheet on the outer circumferential surface of the extension part 243 to prevent the filling blocking member 240 from adhering to the concrete mortar 220 after the concrete mortar 220 is poured. It is preferable to construct an adhesion preventing means.

○ Mortar pouring stage

After the installation of the filling blocking member 240 is completed, the concrete mortar 220 is poured into the formwork 250 as shown in FIG. 18 and then cured to form the pillar body 260.

○ Cover plate installation

After the concrete mortar 220 is poured and cured to form the pillar body 260, a cover plate 270 is installed on the outer circumferential surface of the pillar body 260 as shown in FIG. 21.

Since the pillar body 260 is formed of a pillar having a rectangular cross section and has four sides, the first cover plate 271 is padded on two sides of one side facing each other, and the second cover plate 273 is provided on the remaining two sides. ) And the pillar body 260 is wrapped using the first cover plate 271 and the second cover plate 273.

The first cover plate 271 is formed with the first fastening holes 272 corresponding to the installation position of the first fastening rod 231 spaced up and down, and the second cover plate 273 has a second fastening rod ( Second fastening holes 274 corresponding to the installation position of the 232 are formed.

○ Cover plate joining step

After installation of the first cover plate 271 and the second cover plate 273, the first cover plate 271 and the second cover plate 273 are respectively provided with a first fastening rod 231 and a second fastening rod 232. )

The fastening bolt 280 passes through the first fastening hole 272 and the second fastening hole 274 from the outside of the first cover plate 271 and the second cover plate 273, respectively, to thereby fasten the first fastening rod 231. ) And the end of the second fastening rod 232.

At this time, since the fastening rods 230 are not coupled to the pillar body 260 and are slidable along the longitudinal direction, two first fastening plates and a second fastening plate which face each other are first fastening bars 231, respectively. ) And when the fastening bolts 280 are fastened to both ends of the second fastening rods 232, the fastening force of the fastening bolts 280 extends only to the first fastening rods 231 and the second fastening rods 232. The tensile force is applied to the rod 230 and the first cover plate 271 and the second cover plate 273 are in a state of pressing the outer circumferential surface of the column body 260 inward.

In addition, the fastening bolt 280 may be further provided with a pin tail 282 on the head portion 281 as shown in FIGS. 22 and 23.

The pin tail 282 is attached to the head portion 281, the spline is formed on the outer circumferential surface, the pin tail 282 is automatically applied when a torque of a predetermined size or more, such as a torque shear bolt Separated from the head 281 is to fasten the fastening bolt 280 to the fastening rod 230 with a constant torque.

That is, the fastening mechanism for installing the fastening bolt 280 of the present embodiment is provided with a first clamping portion for clamping the head portion 281 and a second clamping portion for clamping the pin tail 282, the first clamping portion The second clamping part rotates together and the head part 281 and the pin tail 282 are turned to screw the fastening bolt 280 to the fastening rod 230.

Then, as the coupling proceeds, the magnitude of the torque applied to the first clamping portion and the second clamping portion is gradually increased, and the pin tail 282 is separated from the head portion 281 when a torque greater than or equal to a predetermined size is applied. The worker may install the fastening bolt 280 to take a tension of a certain size by stopping the fastening at the time when the pintail 282 is separated.

Concrete pillars 200 formed through the process as described above to press the column body 260 through the fastening rod 230 even if destruction occurs in the column body 260 by the external force applied to the column body 260. The outer circumferential surface of the pillar body 260 is pressed inward by the cover plates 270 that are fastened to maintain a bearing force on the structure.

24 to 27 illustrate the concrete pillar 200 further including the edge cover member 290.

After the construction of the mortar casting step of forming the pillar body 260, the edge cover member 290 may be further installed to surround four corners of the pillar body 260 in the step before installing the cover plate 270. 290 is a 'b' shaped to cover the adjacent sides of the pillar body 260 around the edge of the corner cover member 290 of the first cover plate 271 and the second cover plate 273 When the first cover plate 271 and the second cover plate 273 is installed, both ends of the first cover plate 271 and the second cover plate 273 are in contact with each other. Blocks concrete from escaping through the space.

As shown in FIG. 25, the corner cover members 290 are installed at the four corners of the pillar body 260, respectively, and then the first cover plate 271 and the second cover plate 273 are disposed as shown in FIG. 26. The first cover plate 271 and the second cover plate 273 through the fastening bolt 280 as in the cover plate 270 coupling step, respectively, the first fastening rod 231 and the second fastening rod When fastened to 232, the concrete pillars 200 may be formed in a state where the edge cover member 290 is mounted at the corners as illustrated in FIG. 27.

The reinforcement apparatus of the concrete pillar according to the present invention described above and the method of reinforcing the concrete pillar using the same have been described with reference to one embodiment shown in the drawings, but this is merely illustrative, and has a general knowledge in the art. It will be appreciated that various modifications and equivalent other embodiments are possible therefrom.

Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (15)

A plurality of reinforcing plates installed to surround the outer circumferential surface of the pillar formed of concrete; A first fastening member installed on a reinforcing plate on one side of the pillar; A head extending toward the first fastening member through a head portion supported by the reinforcing plate on the other side of the pillar, and a through hole formed in the pillar from the head portion, and formed at an end of the wire; And a second fastening member including a screw coupling part screwed to the first fastening member. Reinforcing device of the concrete pillar, characterized in that the post-tension is introduced to the pillar by fastening the screw coupling portion to the first fastening member to apply a tensile force to the wire. The method of claim 1, The first fastening member includes a coupling part formed to enter a through hole of the pillar through a fastening hole formed in the reinforcing plate, and a locking part formed at an end of the coupling part and having a larger diameter than the fastening hole. The hollow is formed to penetrate the portion and the engaging portion, the thread is formed on the inner peripheral surface, The screw coupling portion is formed of a cylindrical body having an outer diameter corresponding to the diameter of the hollow, the head portion is located between the stopper having a larger outer diameter than the fastening hole formed in the reinforcement plate, and between the stopper and the reinforcement plate Reinforcement device for a concrete column characterized in that it has a spring washer formed to increase in diameter as it extends from the stopper toward the reinforcement plate. The method of claim 2, The pillar is formed in the shape of a square pillar, the through hole is a first through hole extending to penetrate two opposite surfaces of the square pillar, and formed on the upper or lower portion of the first through hole and A second through hole extending through two surfaces of the pillars facing each other so as to extend in an intersecting direction; The reinforcement plate includes a first reinforcement plate respectively provided on two sides through which the first through hole passes, and a second reinforcement plate respectively installed on two sides through which the second through hole passes. Reinforcement of the column. The method of claim 3, wherein Reinforcing device of the concrete pillar, characterized in that it further comprises a corner cover member is installed on the four corners of the column. For reinforcement of columns formed of concrete, A perforating step of perforating a through hole crossing the inside of the pillar to the pillar; A reinforcing plate installation step of padding a reinforcing plate having a fastening hole corresponding to the through hole on an outer circumferential surface of the column; A first fastening member installing step of installing a first fastening member inserted into one side of the through hole in a reinforcing plate on one side of the pillar; A second fastening member installation step of installing a second fastening member having a head portion supported by the reinforcing plate on the other side of the pillar, a wire extending from the head portion, and a screw coupling portion formed at an end of the wire; With; The second fastening member has the head portion supported by the reinforcing plate, the screw coupling portion and the wire extends toward the first fastening member through the fastening hole and through hole of the other reinforcing plate, the screw coupling portion Reinforcement method of the concrete pillar, characterized in that the screw is coupled to the first fastening hole so that the post tension is introduced into the pillar. The method of claim 5, The pillar is formed in the shape of a square pillar, The drilling step may include a first drilling step of drilling a first through hole by drilling along a first direction crossing the pillar, and a second crossing of an extension direction of the first through hole at an upper or lower portion of the first through hole. A second drilling step of drilling the second through hole along the direction; The first fastening member is installed in one direction of the first through hole and the second through hole, respectively, and the second fastening member is such that the head portion is supported by the other reinforcing plate of the first through hole and the second through hole. Reinforcement method of the concrete pillars, characterized in that installed. The method of claim 6, Reinforcing method of a concrete column, characterized in that it further comprises a corner cover member installation step of installing a corner cover member surrounding the side edge of the pillar around the four corners of the pillar. A fastening rod installation step of penetrating a concrete column and installing a fastening rod provided with an anti-adhesion means on an outer circumferential surface of the column to be relatively short compared to the distance between the opposite surfaces of the column, and to prevent the column from being bonded to the column during construction of the column; A cover plate installation step of installing a cover plate on an outer surface of each of the pillars corresponding to both ends of the fastening rod; A cover plate coupling step of installing a fastening bolt to be fastened to an end of the fastening rod through each of the cover plates to provide a pressing force to the column by relatively moving the cover plates correspondingly installed. Method of reinforcement. The method of claim 8, The anti-adhesion means provided on the outer circumferential surface of the fastening rod is a method of reinforcing concrete pillars, characterized in that the teflon sheet is formed on the outer circumferential surface so as not to be bonded to the pillar. The method of claim 8, The pillar is cured in a columnar shape of a square cross section, The fastening rod installation step may include a plurality of first fastening rods extending along a direction connecting two opposing surfaces on one side of the pillar and spaced vertically, and positioned between the first fastening rods and the first fastening rods. Install a second fastening rod extending along the direction intersecting the fastening rod and extending across two opposing surfaces of the other side of the pillar, The cover plate installation step may include installing two first cover plates covering two opposing surfaces of one side of the pillar facing each other, and installing two second cover plates to cover two opposing surfaces of the other side of the pillar. Reinforcement method of concrete column. The method of claim 10, The cover plate installation step further comprises a corner cover member installation step of installing a corner cover member surrounding the four corners of the pillar reinforcement method of the concrete pillars. The method of claim 8, The fastening rod installation step is installed so that the fastening rod is embedded in the concrete mortar that is poured inside the formwork to form the pillar, Filling blocking member installation step of installing a filling blocking member for blocking the filling of the concrete mortar between the fastening rod and the formwork to form an entry space through which the fixing member can enter between the end of the fastening rod and the formwork Reinforcement method of the concrete column characterized in that it further comprises. The method of claim 12, The filling blocking member may include a blocking sheet having one end fixed to an end outer circumferential surface of the fastening rod, extending toward the formwork, and protruding to an outside of the formwork through a through hole formed in the formwork to be fixed to the formwork. Reinforcement method of concrete column. The method of claim 12, The filling blocking member is inserted into the form from the outside of the form through the through-hole formed in the form, the end portion can be inserted into the hollow of the fastening rod, and the penetrating from the end of the insert Reinforcement method of the concrete pillars, characterized in that it comprises an extension extending to protrude out of the form through the hole. The method of claim 8, The fastening bolt is coupled to the upper portion of the head, the fastening bolt is fastened to the fastening rod is characterized in that it further comprises a pin tail separated from the head portion when a tension force greater than the size set in the fastening rod and the fastening bolt is applied. How to reinforce concrete columns.

Images