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WO2002007499A2 - Dispositif et structure de raccordement entre la tete d'un pieu en acier et un socle en beton - Google Patents

Dispositif et structure de raccordement entre la tete d'un pieu en acier et un socle en beton Download PDF

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Publication number
WO2002007499A2
WO2002007499A2 PCT/KR2001/001230 KR0101230W WO0207499A2 WO 2002007499 A2 WO2002007499 A2 WO 2002007499A2 KR 0101230 W KR0101230 W KR 0101230W WO 0207499 A2 WO0207499 A2 WO 0207499A2
Authority
WO
WIPO (PCT)
Prior art keywords
steel pipe
pipe pile
vertical
joining apparatus
joining
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2001/001230
Other languages
English (en)
Other versions
WO2002007499A3 (fr
Inventor
Sung-Nam Oh
Tae-Sung Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMARTEC ENGINEERING Co Ltd
Original Assignee
SMARTEC ENGINEERING Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020000041671A external-priority patent/KR100324104B1/ko
Application filed by SMARTEC ENGINEERING Co Ltd filed Critical SMARTEC ENGINEERING Co Ltd
Priority to JP2002513258A priority Critical patent/JP3649717B2/ja
Priority to AU2001271119A priority patent/AU2001271119A1/en
Publication of WO2002007499A2 publication Critical patent/WO2002007499A2/fr
Publication of WO2002007499A3 publication Critical patent/WO2002007499A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/10—Deep foundations
    • E02D27/12—Pile foundations
    • E02D27/16—Foundations formed of separate piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/226—Protecting piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/223—Details of top sections of foundation piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/20—Miscellaneous comprising details of connection between elements

Definitions

  • the present invention relates to an apparatus and a structure for joining a head of a steel pipe pile and a concrete foundation, and more particularly, to an apparatus and a structure for firmly joining a head of a steel pipe pile and a concrete foundation by being easily mounted on the head of the steel pipe pile.
  • a first structure is made in a such a manner that the head of a steel pipe pile is driven into the concrete foundation more deeply than a diameter of . the steel pipe pile, and a driven portion of the steel pipe pile supports a driving force or a drawing force applied to the head of the steel pipe pile.
  • a second structure is made in such a manner that the head of the steel pipe pile is driven into the concrete foundation as deep as just about 10cm and the head of the steel pipe pile and the concrete foundation are connected by using a reinforcing steel, thereby supporting a load applied to the head of the steel pipe pile from the concrete foundation.
  • the first structure has a problem of requiring more complex, steel arrangement and greater volume of steels compared with the second structure since a main reinforcing steel arranged on a bottom of the concrete foundation is sheared due to interference of the steel pipe pile driven into the concrete foundation. Therefore, the second structure is more popular in use.
  • FIG. 6 illustrating an exemplary view of the second structure
  • a circular covering plate 5 is installed on and welded to an upper part of the steel pipe pile 1
  • a reinforcing steel 3 is welded to a side surface of the steel pipe pile 1.
  • the covering plate 5 is ineffectual and the cross reinforcing plate 6 is difficult to be installed due to its heavy weight, requiring more installation cost.
  • the welding needs labor-intensive work and high cost since the reinforcing steel should be welded to the side surface of the steel pipe pile 1.
  • Korea Patent No. 229166 was suggested to solve the problems but failed to ultimately cure the problems since the patent also employs the cross reinforcing plate and the covering pate which are integrally jointed on the upper part of the steel pipe pile.
  • FIG. 7 there has been developed a structure, which fills an inside of the steel pipe pile with concrete.
  • a slide preventing jaw 101 and a lower plate flange 102 are respectively welded to a side wall inside the steel pipe pile 1, and then a lower plate 103 is installed on the lower plate flange 102 to close the section of the steel pipe pile 1.
  • the reinforcing steel 3 is installed over an upper part of the lower plate 103 and the concrete is cast.
  • this conventional technology requires that the slide preventing jaw 101 and the lower plate flange 102 should be installed on the inside wall-of the steel pipe pile 1 by welding, whereby the narrow inside of the steel pipe pile 1 makes the jaw and the flange very difficult to be installed and possibility of poor welding increased.
  • the inventor has developed such a structure as illustrated in FIG. 8 and assigned Korea Patent Application No. 2000-12472.
  • a cylindrical joining apparatus 200 integrally provided with a lower plate flange 202 on a lower part is completely inserted into an inside of a steel pipe pile 1.
  • the joining apparatus 200 is integrally joined with a side surface of the steel pipe pile 1 by using bolts 201.
  • the reinforcing steel 3, which put into the concrete foundation 2, is vertically arranged on an upper side surface of the joining apparatus 200.
  • a lower plate 203 is disposed on the lower plate flange 202 to close a section of the steel pipe pile.
  • the inside of the steel pipe pile 1 formed on the upper part of the lower plate 203 is also filled with concrete.
  • This conventional technology should support an axial force, such as the driving force and drawing force, applied to the head of the steel pipe pile by a friction force between a surface of the steel pipe pile and the concrete and a load of the bolts for joining the steel pipe pile and the joining apparatus.
  • the friction force is affected by condition of the surface of the steel pipe pile during construction, in other words, how severely the surface of the steel pipe pile is stained with earth, water or other substances.
  • design should be directed to securing of sufficient safety factor in consideration of the above.
  • 129 tons excluding 11 tons which is an allowable friction force should be supported by the bolts for joining the steel pipe pile and the joining apparatus.
  • the joining apparatus should be located more deeply than a diameter of the steel pipe pile from the upper part of the steel pipe pile in order to secure the friction force between the concrete and the steel pipe pile.
  • the bolts are located under the ground and accordingly severe difficulty occurs in forming bolt holes and joining the bolts.
  • the steel pipe pile has a compressive load much higher than a tensile load which should be supported by the steel pipe pile in the axial force from the concrete foundation. Perceiving such characteristics of the steel pipe pile, the inventor has developed the structure wherein the inside of the head of the steel pipe pile is filled with concrete, and the joining apparatus effectively supports the axial force which needs support by the steel pipe pile.
  • the present invention is directed an apparatus and a structure for joining a head of a steel pipe pile and a concrete foundation that substantially obviates one or more problems due to limitations and disadvantages of the related prior arts.
  • An object of the present invention is to provide an apparatus and a structure for joining a head of a steel pipe pile and a. concrete foundation which can improve construction efficiency and economical efficiency by enabling a load of a welding part or a bolt for joining the steel pipe pile and the joining apparatus to support a tensile load applied to a steel pipe pile, and enabling a load of a horizontal part or a flange of the joining apparatus to support most of a relatively higher compressive load.
  • an apparatus for joining a steel pipe pile comprising: a circular vertical part including a plurality of bolt holes which are formed on an upper side surface of the vertical part at predetermined intervals to be bolt-joined with the steel pipe pile, a slide preventing jaw which is protruded on an inside of the vertical pax Jo be mechanically engaged with concrete, and taking an external diameter corresponding to an internal diameter of the steel pipe pile to be inserted into a head of the steel pipe pile; a flange being outwardly protruded from an upper end part of the vertical part to enable the joining apparatus to be put on the steel pipe pile and transfer a compressive load applied to the joining apparatus to the steel pipe pile when the joining apparatus is inserted into the head of the steel pipe pile; and a bottom plate being integrally provided on a lower part of the vertical part to close a section of the steel pipe pile and allowing a plurality of steel mounting holes on which reinforcing
  • a central opening may be formed at the center of the bottom plate, and a covering plate may cover the central opening to close the central opening.
  • a volume of steel used can be reduced in forming the bottom plate.
  • an apparatus for joining a steel pipe pile comprising; a joining apparatus body including a circular vertical part which has an external diameter corresponding to an internal diameter of the steel pipe pile to be inserted into a head of the steel pipe pile, and a horizontal part which is provided on an upper part of the vertical part in a circular outer frame of a predetermined width, has a flange outwardly protruded from the upper part of the vertical part to enable the joining apparatus to be put on the steel pipe pile when the joining apparatus is inserted into an inside of the steel pipe pile, and also has vertical rod holding holes formed at predetermined intervals along a circumference thereof; a plurality of vertical rods being inserted into and secured to the vertical rod holding holes which are formed on the horizontal part on one end part thereof and being vertically and downwardly extended; and ⁇ bottom plate being connected to other end part of the vertical rods to close a section of the steel pipe pile.
  • a plurality of bolt holes may be formed on a side surface of the vertical part such that the joining apparatus body are joined with the steel pipe. pile by means of bolts when the vertical part is inserted into the head of the steel pipe pile.
  • a lower part of the flange of the horizontal part and an upper end part of the steel pipe pile may be welded together such that the joining apparatus body are integrally joined with the steel pipe pile.
  • a plurality of vertical ribs may be provided between the horizontal part and the vertical part to support the horizontal part and the vertical part.
  • a plurality of reinforcing steel holding holes into which an end part of the respective reinforcing steels driven into a concrete foundation is inserted may be formed at predetermined intervals along a circumference of the horizontal part.
  • a protrusion and a slide preventing jaw may be protruded on an inside wall of the vertical part to be mechanically engaged with concrete which is filled inside.
  • an apparatus for joining a steel pipe pile comprising a body including a circular vertical part having an external diameter corresponding to an internal diameter of the steel pipe pile to be inserted into a head of the steel pipe pile, a horizontal part being provided on a lower end part of the vertical part in a form of a circular outer frame of a predetermined width and allowing vertical rod holding holes to be formed at predetermined intervals along a circumference thereof, and a flange being outwardly protruded from an upper end part of the vertical part to be put on an upper end part of the steel pipe pile; a plurality of vertical rods being inserted and secured to the vertical rod holding holes which are formed on the horizontal part of the body on one end part thereof and being vertically and downwardly extended; and a bottom plate being connected to other end part of the vertical rods to close a section of the steel pipe
  • the body may be bolt-joined with the steel pipe pile. Otherwise, the body may be integrally joined with the steel pipe pile by welding a lower part of the flange of the horizontal part and an upper end part of the steel pipe pile.
  • a plurality of vertical ribs may be provided between the horizontal part and the vertical part of the joining apparatus to support the horizontal part and the vertical part.
  • a plurality of reinforcing steel holding holes on which an end part of respective reinforcing steels driven into a concrete foundation is installed, may be formed on the horizontal part at predetermined intervals along the circumference of the horizontal part.
  • FIG. la is an exploded perspective view of a joining apparatus according to a preferred embodiment of the present invention.
  • FIG. lb is a perspective view of a section taken through a line A-A of FIG. la wherein the j oining apparatus of FIG. 1 a is j oined;
  • FIG. lc is a sectional view of a state where the joining apparatus of FIG. la is joined with a concrete foundation;
  • FIG. 2a is an exploded perspective view of a joining apparatus according to another preferred embodiment of the present invention
  • FIG. 2b is a perspective view of a section taken through a line A-A of FIG. 2a wherein the joining apparatus of FIG. 2a is joined;
  • FIG. 2c is a sectional view of a state where the joining apparatus of FIG. 2a is joined with a concrete foundation;
  • FIG. 2d is a perspective view of a section wherein the joining apparatus of FIG. 2a is joined according to a modified embodiment of the joining apparatus of FIG. 2a;
  • FIG. 3a is an exploded perspective view of a joining apparatus according to further another preferred embodiment of the present invention.
  • FIG. 3b is a perspective view of a section taken through a line A-A wherein the joining apparatus of FIG. 3a is joined;
  • FIG. 3c is a sectional view of a state where the joining apparatus of FIG. 3a is joined with a concrete foundation;
  • FIG. 3d is a perspective view of a section wherein the joining apparatus of FIG. 3a is joined according to a modified embodiment of the joining apparatus of FIG. 3a;
  • FIG. 3e is a sectional view of a state where the joining apparatus of FIG. 3d is joined with a concrete foundation;
  • FIG. 4a is a perspective view of a section wherein the joining apparatus of FIG. 3a is joined according to another modified embodiment of the joining apparatus of FIG. 3 a;
  • FIG. 4b is a sectional view of a state where the joining apparatus of FIG. 4a is joined with a concrete foundation;
  • FIG. 5a is a perspective view of a section wherein the joining apparatus of FIG. 3a is joined according to still another modified embodiment of the joining apparatus of FIG. 3a;
  • FIG. 5b is a sectional view of a state where the joining apparatus of FIG. 5a is joined with a concrete foundation;
  • FIG. 6 is a perspective view of a conventional joining apparatus
  • FIG. 7 and FIG. 8 are a sectional view of a conventional structure for joining a concrete foundation and a steel pipe pile.
  • FIG. la is an exploded perspective view of a joining apparatus according to the preferred embodiment of the present invention.
  • FIG. lb is a perspective view of a section taken through a line A-A of FIG. la wherein the joining apparatus of FIG. la is joined.
  • FIG. lc is a sectional view of a state where the joining apparatus of FIG. la is joined with a concrete foundation.
  • the joining apparatus 10 includes a circular vertical part 12 which has an external diameter corresponding to an internal diameter of a steel pipe pile 1 to be inserted into a head of the steel pipe pile, a flange 14 which is outwardly protruded in a radial direction from an upper end part of the vertical part and integrally formed with the vertical part 12 to enable the joining apparatus 10 to be put on the steel pipe pile 1 when the joining apparatus 10 is inserted intojthe head of the steel pipe pile 1, and a bottom plate 15 which is integrally formed with a lower part of the vertical part 12 to close a section of the steel pipe pile 1.
  • the flange 14 functions to transfer a compressive load applied to the joining apparatus 10 to the steel pipe pile 1.
  • a plurality of bolt holes 16 are formed on an upper side surface of the vertical part 12 at predetermined intervals.
  • the steel pipe pile 1 and the joining apparatus 10 are integrally formed by bolts 17 through corresponding bolt holes formed on a side of the steel pipe pile 1 and the bolt holes 16 of the vertical part 12, when the vertical part 12 is inserted into the head of the steel pipe pile 1.
  • a tensile load applied to the joining apparatus 10 from the concrete foundation is transferred to the steel pipe pile 1 through the bolts 17.
  • a conventional joining apparatus of FIG. 8 requires a great number of bolts since the bolts for joining the joining apparatus and the steel pipe pile support most of the compressive load.
  • the bolts 17 for joining the joining apparatus 10 and the steel pipe pile 1 mostly support the tensile load, thereby reducing the number of the necessary bolts 17.
  • a plurality of a slide preventing jaw 18 are inwardly protruded on a side surface of the vertical part 12.
  • the slide preventing jaws 18 transfer an axial force including the compressive load or the tensile load sent from the concrete foundation to the steel pipe pile 1 by being mechanically engaged with concrete when the concrete is filled in a space defined by the vertical part 12 and the bottom plate 15. Since the slide preventing jaws 18 are formed inside the vertical part 12 and its expansion is limited by the vertical part 12, there is considerably increased a supporting strength of the concrete which is filled in the space defined by the vertical part 12 an the bottom plate 15. As a result, the slide preventing jaws 18 get to support a considerable amount of compressive load applied to the joining apparatus 10 while the compressive load transferred to the bottom plate 15 is decreased.
  • Reinforcing steel holding holes 19 are formed at predetermined intervals along a circumference of the bottom plate 15. An end part of each vertical reinforcing steel 3 is inserted into the reinforcing steel holding hole 19. Other end part of the reinforcing steel holding hole 19 is driven into the concrete foundation 2 (see FIG. lc). A shear resistance generated when the end parts of the reinforcing steels 3 and the reinforcing steel holding holes 19 are joined with screws can be additionally used, whereby a.development length of the reinforcing steels 3 in the concrete foundation can be reduced.
  • a thickness in a central portion of the bottom plate 15 may be different from that in edge portions of the bottom plate 15.
  • a central opening 8 is formed at the center of the bottom plate 15, and such a thin covering plate 9 as a steel plate, a wooden plate or the likes covers an upper part of the central opening 8 so as to close the central opening 8.
  • a plurality of reinforcing ribs 7 may be installed between the bottom plate 15 and the vertical part 12 to firmly support the bottom plate . 15.
  • the shear resistance may be additionally usable by virtue of the threaded engagement.
  • a steel bar 4 of the concrete foundation 2 is arranged over the steel pipe pile 1. Concrete is filled and cured in the inside of the vertical part 12 and in the concrete foundation 2.
  • FIG. 2a is an exploded perspective view of the joining apparatus 20 according to another preferred embodiment of the present invention.
  • FIG. 2b is a perspective view of a section of the joining apparatus taken through a line A-A of the FIG. 2a wherein the joining apparatus of the FIG. 2a is joined.
  • FIG. 2c is a sectional view of a state where the joining apparatus 20 is joined with the concrete foundation.
  • the joining apparatus 20 includes a body 21 having a circular vertical part
  • the vertical part 22 is inwardly and vertically formed from the end part of the horizontal part 23 as inside as a thickness of the steel pipe pile 1 or more, such that edge portions of the horizontal part 23 are outwardly protruded from the vertical part 22 so as to form the flange 24.
  • the flange 24 is put on the upper end part of the steel pipe pile 1 and transfers a compressive load applied to the joining apparatus 20 to the steel pipe pile 1.
  • Reinforcing steel holding holes 29 may be provided on the horizontal part
  • Screw parts may be respectively formed on the reinforcing steels 3 and the reinforcing steel holding holes 29 to join the reinforcing steels 3 and the reinforcing steel holding holes 29 with screws. If the reinforcing-steels 3 are joined with the reinforcing steel holding holes 29 through the screws, a joining force is improved and thus a development length of the reinforcing steels 3 inside the steel pipe pile 1 is reduced, leading to reduction in cost and enhancement in work efficiency.
  • a plurality of bolt holes 26 are formed on a side surface of the vertical part
  • the steel pipe pile 1 and the joining apparatus 20 are integrally joined together by bolts 27 through corresponding bolt holes formed on a side surface of the steel pipe pile and inserting the bolts 27 into the bolt holes 26.
  • a tensile load applied to the joining apparatus 20 is transferred to the steel pipe pile 1 through the bolts 27.
  • a plurality of vertical ribs 37 may be provided between the horizontal part 23 and the vertical part 22 to support the vertically joined horizontal part 23 and vertical part 22. Eight to twelve ribs 37 ,are preferable but it is not limited to a certain number.
  • the bottom plate 25 is separated from the vertical part 22. Since the bottom plate 25 is separated from the vertical part 22, when concrete is placed on the bottom plate 25, a friction force between the concrete and the side surface of the steel pipe pile supports an axial force, such as a compressive load or a tensile load, whereby a volume of steel used can be reduced and economical efficiency and construction efficiency can be improved.
  • the bottom plate 25 is formed of a circular plate having a diameter smaller than the internal diameter of the steel pipe pile 1. The bottom plate 25 closes the inside section of the steel pipe pile 1 by being connected with the horizontal part
  • a sealing member (not shown) may be provided on an external peripheral surface of the bottom plate so as not to leak the concrete.
  • underground water is prevented from flowing from a lower part of the steel pipe pile to an upper part of the steel pipe pile.
  • the one end part of the vertical rod 30 is inserted into and secured on the vertical rod holding hole 31 of the horizontal part 23.
  • the vertical rod holding hole 32 is also formed on the bottom plate 25, such that the other end part of the vertical rod 30 is inserted into and secured on the vertical rod holding hole 32 formed on the bottom plate 25.
  • the end part of the vertical part 30 is secured on the bottom plate 25 and/or the horizontal part in a manner that each vertical rod 30 is inserted into the holding holes 31 and 32, and then a nut is installed on an end part. Otherwise, the end part of the vertical part 30 is secured in a manner that a screw part is formed on an end part of the vertical rod 30, a corresponding screw part is formed on the holding holes 31 and 32, and a threaded engagement is performed.
  • the number of vertical rods 30 is determined by structural calculation, preferably 8-12. However, it is not limited to a certain number.
  • the joining apparatus 20 is made by assembling the body 21 which includes the horizontal part 23 and the vertical part 22, the horizontal rods 30 and the bottom plate 25. That is to say, the end part of the vertical rod 30 is secured on the vertical rod holding hole 32 of the bottom plate 25, and the other end part of the vertical rod 30 is joined with the vertical rod holding hole 31 of the horizontal part 23.
  • an order of assembling the vertical rod 30 is not restricted to the above.
  • the assembled joining apparatus 20 is inserted into the upper part of the steel pipe pile 1 and the flange 24 of the horizontal part 23 is put on the upper part of the steel pipe pile 1.
  • the joining apparatus 20 is joined, with the steel pipe pile 1 by making the bolt holes formed on the upper side surface of the steel pipe pile 1 coinciding with the bolt holes 26 of the vertical part 22, and then inserting the bolts 27.
  • the reinforcing steel 3 driven into the concrete foundation is mounted on the joining apparatus 20.
  • the reinforcing steel holding hole 29 is formed on the horizontal part 23 of the body 21 and the reinforcing steel 3 is vertically secured to the reinforcing steel holding hole 29.
  • FIG. 2d is a view of a modified embodiment of the aforesaid another preferred embodiment.
  • FIG. 2d is a perspective view of a section wherein the joining apparatus 20 is assembled.
  • the joining apparatus 20 may be integrally joined with the steel pipe pile 1 by forming a chamfer 33 on the flange 24 of the horizontal part 23 and welding the chamfer 33 with the upper part of the steel pipe pile 1.
  • the side surface of the steel pipe pile 1 should also be perforated in a construction site to form the bolt holes on the side surface of the steel pipe pile 1, corresponding to the bolt holes 26 of the joining apparatus 20.
  • the process for forming the bolt holes becomes unnecessary, thereby enhancing work efficiency. Further, the load of the steel pipe pile is sufficiently usable since there doesn't occur a sectional loss of the steel pipe pile and the joining apparatus 20, the sectional loss which would be caused when the bolt holes 26 are formed.
  • the reinforcing steels 3 are inserted into an opening formed at the center of the horizontal part 23, vertically positioned on the bottom plate 25 at predetermined intervals, and the concrete is cast, without joining the reinforcing steels 3 with the horizontal part 23,
  • FIG. 3a is an exploded perspective view of a joining apparatus 40 according to the further another preferred embodiment of the present invention.
  • FIG. 3b is a perspective view of a section of the joining apparatus taken through a line A-A of FIG. 3a wherein the joining apparatus of FIG. 3a is joined.
  • FIG. 3c is a sectional view of a state where the joining apparatus 40 is joined with the concrete foundation 2.
  • FIG. 3d is a perspective view of a section wherein the joining apparatus 40 of FIG. 3a is joined with the steel pipe pile 1 by welding, and the end part of the reinforcing steel 3 is placed on the bottom plate without being joined with the horizontal part 23 according to a modified embodiment of the joining apparatus of FIG. 3a.
  • FIG. 3e is sectional view of a state w-here the joining apparatus of FIG. 3d is joined with the concrete foundation 2.
  • FIG. 3a to FIG. 3e are modified embodiments of FIG. 2a to FIG. 2d, showing that the horizontal part is formed on a lower part of the vertical part.
  • the joining apparatus 40 includes a body 41 having a vertical part 43 which takes an external diameter corresponding to an internal diameter of the steel pipe pile 1 to be inserted into the inside of the steel pipe pile 1, a horizontal part 43 which is provided on a lower part of the vertical part 42 in a form of a circular outer frame of a predetermined width, and a flange 44 which is upwardly protruded on an upper part of the vertical part 42 to be put on the upper part of the steel pipe pile 1; vertical rods 50 each being secured to the horizontal part 43 on one end part thereof and vertically and downwardly extended; and a bottom plate 45 being secured on other end part of the vertical rods 50 to close a section of the steel pipe pile 1.
  • the horizontal part 23 is formed on the uppermost part of the vertical part 22, and the flange 24 is formed by permitting the horizontal part 23 to be outwardly protruded farther than the external diameter of the vertical part 22.
  • the horizontal part 43 is formed on a lower end part of the vertical part 42 and the flange 44 is separately formed on an upper end part of the horizontal part 42.
  • the horizontal part 43 is formed on the lower part of the vertical part 42, whereby a plurality of vertical ribs 57 are formed on the upper part of the horizontal part 43, in contrast to the ribs 37 of FIG. 2a to FIG. 2e which are provided on the lower part,, of the horizontal part.
  • the reinforcing steel is connected to the joining apparatus on the inside of the steel pipe pile and reinforced with the concrete, so that a portion where the reinforcing steel and the joining apparatus are connected can be further reinforced.
  • FIG. 4a and FIG. 4b show another modified embodiment of the embodiment of FIG. 3a to FIG. 3e.
  • FIG. 4a is a sectional perspective view of a section wherein the joining apparatus 40 is mounted on the head of the steel pipe pile 1.
  • FIG. 4b is a sectional view of a state where the joining apparatus is joined with the concrete foundation 2.
  • FIG. 5a and FIG. 5b are a sectional perspective view and a sectional view, respectively, of the joining apparatus of FIG. 3a to FIG. 3c wherein a protrusion 58 and a slide preventing jaw 59 are additionally formed inside the vertical part according to a still modified embodiment of the embedment of FIG. 3a and FIG. 3c.
  • the protrusion 58 and the slide preventing jaw 59 prevent the concrete filled in the inside of the vertical part from being separated from the vertical part due to drying shrinkage, and reduce the load applied to the bottom plate by supporting the tensile load and the compressive load transferred from the concrete by virtue of mechanical engagement with the concrete.
  • the protrusion 58 and the slide preventing jaw 59 may be provided in the previously described embodiments. Further explanation of the embodiments of FIGS. 4a, 4b, 5a and 5b would be omitted because it is redundant. In all the embodiments explained, the reinforcing steel may be reinforced by being wound with a hoop tie.
  • a joining apparatus has an advantage of drastically reducing the number of bolts necessary for joining a joining apparatus and a steel pipe pile and accordingly improving construction efficiency and economical efficiency, if being compared with a conventional joining apparatus, since the bolts or welding parts for joining the joining apparatus and the steel pipe pile support a tensile load transferred from a concrete foundation to the steel pipe pile, and a load of a horizontal part and/or a flange of the joining apparatus supports most of a compressive load which is relatively greater.
  • the joining apparatus according to the present invention has another advantage of well supporting a bending moment and a compressive load applied to a head of the steel pipe pile, since the head of the steel pipe pile is formed into a reinforced concrete.
  • the joining apparatus according to the present invention has yet another advantage of reducing a depth of a vertical part of the joining apparatus which is inserted into an inside of the steel pipe pile, since the joining apparatus manufactured in a factory in advance is inserted into the inside of the steel pipe pile, and then concrete is filled between the joining apparatus and the steel pipe pile so as to enhance an adhesive strength between the concrete and the joining apparatus. As a consequence, manufacturing cost of the joining apparatus is reduced, since a volume of steel used for the joining apparatus is accordingly reduced.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)
  • Foundations (AREA)

Abstract

Cette invention concerne un dispositif et une structure permettant de raccorder la tête d'un pieu en acier à un socle en béton. Le système comprend un pièce verticale de type cylindrique comportant un certain nombre de trous de vis à sa partie supérieure, qui vient s'insérer dans la tête d'un pieu en acier ; une partie collerette disposée au haut de la partie verticale de sorte que cette dernière soit suspendue au sommet du pieu ; et une plaque inférieure intégrée au bas de la partie verticale qui vient obturer la section en coupe du pieu en acier.
PCT/KR2001/001230 2000-07-20 2001-07-18 Dispositif et structure de raccordement entre la tete d'un pieu en acier et un socle en beton Ceased WO2002007499A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2002513258A JP3649717B2 (ja) 2000-07-20 2001-07-18 鋼管杭の頭部とコンクリート基礎との結合のための結合具および結合構造
AU2001271119A AU2001271119A1 (en) 2000-07-20 2001-07-18 Apparatus and structure for connecting head of steel pipe pile and concrete footing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020000041671A KR100324104B1 (ko) 2000-07-20 강관말뚝 머리부와 콘크리트 기초의 결합을 위한 결합구 및 이를 이용한 결합구조
KR2000/41671 2000-07-20

Publications (2)

Publication Number Publication Date
WO2002007499A2 true WO2002007499A2 (fr) 2002-01-31
WO2002007499A3 WO2002007499A3 (fr) 2002-06-20

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JP2016061118A (ja) * 2014-09-19 2016-04-25 株式会社竹中工務店 杭と柱の接合構造
AU2018201264B2 (en) * 2012-07-11 2019-08-01 Patented Foundations Pty Ltd Building slab system

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JP5133650B2 (ja) * 2007-10-22 2013-01-30 株式会社竹中工務店 柱と鋼管杭の接合構造
KR101443598B1 (ko) 2014-04-07 2014-09-23 한국건설기술연구원 석션압을 이용한 수중 가시설물 시공방법
CN106703020A (zh) * 2016-12-30 2017-05-24 重庆中材参天建材有限公司 超长水下桩基础用可回收的标准钢护筒
CN106836197A (zh) * 2017-04-10 2017-06-13 中国水利水电第七工程局成都水电建设工程有限公司 一种预防桩基钢筋笼偏斜的隔离保护装置及其施工方法
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CN110438982A (zh) * 2019-08-12 2019-11-12 中国建筑第二工程局有限公司 一种管桩端板以及管桩连接方法
CN111719546B (zh) * 2020-06-04 2021-09-07 江苏文博建筑设计有限公司 一种稳定性高的管桩构造
JP7492397B2 (ja) * 2020-07-28 2024-05-29 株式会社安井建築設計事務所 鋼管杭と鋼製柱との接合構造およびその施工方法
CN111962673A (zh) * 2020-09-18 2020-11-20 中国建筑第八工程局有限公司 钢管混凝土柱柱脚结构及其施工方法
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
AU2018201264B2 (en) * 2012-07-11 2019-08-01 Patented Foundations Pty Ltd Building slab system
JP2016061118A (ja) * 2014-09-19 2016-04-25 株式会社竹中工務店 杭と柱の接合構造

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WO2002007499A3 (fr) 2002-06-20
CN1418277A (zh) 2003-05-14
AU2001271119A1 (en) 2002-02-05
CN1189630C (zh) 2005-02-16
JP3649717B2 (ja) 2005-05-18
KR20010007734A (ko) 2001-02-05
JP2004504521A (ja) 2004-02-12

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