CN117166362B - Arc-shaped cable strand embedded pipe structure and its manufacturing and installation method for suspension bridge anchorage system - Google Patents
Arc-shaped cable strand embedded pipe structure and its manufacturing and installation method for suspension bridge anchorage systemInfo
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- CN117166362B CN117166362B CN202311074079.8A CN202311074079A CN117166362B CN 117166362 B CN117166362 B CN 117166362B CN 202311074079 A CN202311074079 A CN 202311074079A CN 117166362 B CN117166362 B CN 117166362B
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Abstract
本发明公开了一种悬索桥锚碇锚固系统弧形索股预埋管结构及制作安装方法；对应的锚固系统具有直线段L1，圆弧段L2和直线段L3；将直线段L1，圆弧段L2和直线段L3前端的一部分预埋管设计成由多根小钢管组成的分丝管，直线段L3后端预埋管则采用一根直钢管。分丝管后端10cm处套入1块矩形分丝板，并将该10cm管体插入直预埋管中，前端10cm处套入1块圆形分丝板和20cm长的圆形连接管，分丝管与分丝板垂直，连接管与分丝管轴线平行。安装完成以后将下端分丝板与直预埋管口焊接。本发明具有如下优点：避免了多根索股在圆弧段预埋管内互相接触、挤压、缠绕产生受力不均的问题；解决了圆形截面、弧形预埋管安装难题；操作简便。
The present invention discloses a structure and manufacturing and installation method for an arc-shaped cable strand embedded pipe of a suspension bridge anchoring system; the corresponding anchoring system comprises a straight segment L1, a circular segment L2 and a straight segment L3; a portion of the embedded pipe at the front end of the straight segment L1, the circular segment L2 and the straight segment L3 is designed as a branching pipe composed of multiple small steel pipes, while the embedded pipe at the rear end of the straight segment L3 is a single straight steel pipe. A rectangular branching plate is inserted 10 cm from the rear end of the branching pipe, and the 10 cm pipe body is inserted into the straight embedded pipe, and a circular branching plate and a 20 cm long circular connecting pipe are inserted 10 cm from the front end, with the branching pipe being perpendicular to the branching plate and the connecting pipe being parallel to the axis of the branching pipe. After installation is completed, the lower end branching plate is welded to the straight embedded pipe opening. The present invention has the following advantages: it avoids the problem of uneven force caused by multiple cable strands contacting, squeezing and entangled with each other in the circular segment embedded pipe; it solves the installation problem of circular cross-section and arc-shaped embedded pipes; and it is easy to operate.
Description
Technical Field
The invention relates to the field of anchorage of suspension bridges, in particular to an arc-shaped cable strand embedded pipe structure of an anchorage system of a suspension bridge and a manufacturing and mounting method.
Background
The rope strand embedded pipe of the suspension bridge anchoring system is a pipe structure embedded in the anchorage concrete, and the function of the pipe structure is to form an installation pore canal of an anchor rope when the anchorage concrete is embedded in the anchorage concrete during pouring. The existing anchorage anchoring system of the suspension bridge mostly adopts a linear cable strand, the embedded pipe is a straight steel pipe, the manufacture and the installation are extremely simple, and the position of the embedded pipe can be determined only by measuring the coordinates of the front section and the rear section during the installation.
In recent years, a suspension bridge anchoring system (see fig. 1,2 and 3) has been applied to an arc-shaped strand, wherein the arc-shaped strand is generally designed into 3 sections, namely a straight line section L1, an arc-shaped section L2 and a straight line section L3. The L1 is positioned near the front anchor surface and is in a divergent shape, the front end of the L1 is lengthened and then is intersected with the IP point of the cable saddle, the rear end of the L1 is a parallel straight line segment which is parallel to the central line of the main cable, and the circular arc segment L2 changes the straight line of the front end divergent into the straight line of the rear end parallel. Correspondingly, the same linear combination is adopted for the arc-shaped strand embedded pipes.
The arc-shaped strand embedded pipe mainly has the following problems that (1) a plurality of strands are mutually contacted, extruded and mutually wound in one arc section, and easily generate uneven stress and the like, and (2) the arc-shaped strand embedded pipe is made of round steel pipes, the line is in a circular arc-shaped space line shape, and at least enough (more than or equal to 3) characteristic points are difficult to find for measurement and positioning.
Disclosure of Invention
Therefore, in order to solve the defects, the invention provides an arc-shaped cable strand embedded pipe structure of an anchorage anchoring system of a suspension bridge and a manufacturing and installing method. The structure of the embedded pipe of the arc-shaped rope strand of the suspension bridge anchorage is provided, and the problem that the rope strands are in contact with each other, extruded and wound in the embedded pipe of the arc section to generate uneven stress is avoided (see figure 13). And (2) providing a manufacturing and installing method of the arc-shaped embedded pipe.
The invention discloses an arc cable strand embedded pipe structure of an anchorage anchoring system of a suspension bridge, which is realized by the implementation, and is characterized in that the corresponding anchoring system is provided with a straight line section L1, an arc section L2 and a straight line section L3, part of embedded pipes at the front ends of the straight line section L1, the arc section L2 and the straight line section L3 are designed into a wire dividing pipe consisting of a plurality of small steel pipes, and the embedded pipe at the rear end of the straight line section L3 adopts a straight steel pipe. The rear end of the wire dividing pipe is sleeved with 1 rectangular wire dividing plate at the position of 10cm, the 10cm pipe body is inserted into the direct embedded pipe, the front end of the wire dividing pipe is sleeved with 1 circular wire dividing plate and a circular connecting pipe with the length of 20cm, the wire dividing pipe is perpendicular to the wire dividing plate, and the connecting pipe is parallel to the axis of the wire dividing pipe. And after the installation is finished, the lower wire dividing plate is welded with the straight pre-buried pipe orifice.
The method for manufacturing and installing the arc-shaped strand embedded pipe of the suspension bridge anchorage anchoring system is characterized in that the length of the arc-shaped strand embedded pipe of the suspension bridge is generally more than 30m, if the whole cable is manufactured and installed, the whole cable is easy to deform in the transportation and installation processes, and a method for manufacturing and installing the cable in sections is selected, namely, a direct embedded pipe and a wire dividing pipe are manufactured separately, a lower direct embedded pipe is manufactured and installed firstly, and then the upper wire dividing pipe is manufactured and installed;
before the embedded pipe is installed, a bracket is erected in the anchorage by adopting section steel and is used for supporting and fixing the embedded pipe;
when in installation, the pipe orifice is only required to be measured to be adjusted to the allowable error of design;
The key of the installation of the wire dividing pipe is that the posture and the position of the wire dividing pipe can be measured and controlled from the wire dividing plate and the connecting pipe, 1 the wire dividing plate connected with the straight embedded pipe is designed into a rectangle, the projection angle alpha of the wire dividing pipe in the front anchor surface is reflected through the rotation angle of the rectangular wire dividing plate, so that the posture of the wire dividing pipe is adjusted, and 2 the position of the wire dividing pipe in the front anchor surface is controlled through the central coordinate of the pipe orifice of the connecting pipe.
The manufacturing and mounting method is characterized in that ① of a wire dividing pipe is manufactured into an arc shape by a pipe bending machine, ② of the wire dividing pipe is used for placing a plurality of arc-shaped small steel pipes on a jig frame, the arc sections naturally sag to form 1 bundle, 1 section is fixed according to 1m, two ends of the ③ wire dividing pipe are sleeved into the wire dividing plate, the rectangular edge at the top of the rear end of the ③ wire dividing plate is adjusted to be in a horizontal state by adopting a leveling rod (which is very important), the vertical relation between the wire dividing plate and the wire dividing pipe is controlled by adopting an angle square, the two are welded and fixed, the front end of ④ of the pipe is sleeved into 1 section of 20cm of straight steel pipe to serve as a connecting pipe, the connecting pipe is perpendicular to the wire dividing plate, the wire dividing pipe is centered in the connecting pipe, the axes of the two are parallel, and the connecting pipe is welded with the wire dividing plate.
The manufacturing and mounting method is characterized in that before the installation of the yarn dividing pipe, ①, a straight angle steel is installed above the pipe orifice at the top of the straight embedded pipe, one surface of the angle steel is coplanar with the section of the pipe orifice, and the edge at the top of the angle steel is adjusted to be horizontal by adopting a leveling rod and is fixed with the straight embedded pipe by spot welding.
② The wire dividing pipe is transported by a crane, the lower end of the wire dividing pipe is inserted into the direct embedded pipe and is tightly attached to the angle steel, at the moment, the arc section of the wire dividing pipe still naturally sags, the axis of the whole wire dividing pipe is in a vertical plane, and the edge at the top of the rectangular wire dividing plate is in a horizontal posture;
③ The method comprises the steps of installing a chain block on a support, hanging the middle part and the end part of a wire dividing pipe, rotating the wire dividing pipe by winding and unwinding the chain block, enabling one edge of a rectangular wire dividing plate to rotate relative to angle steel, measuring the included angle between the top edge of the wire dividing plate and the angle steel by using an electronic protractor, comparing the included angle with alpha, and continuing to rotate the wire dividing pipe and adjusting the wire dividing pipe until the angle meets the allowable error when the angle does not meet the error requirement. The wire dividing plate is fixed with the pipe orifice of the straight embedded pipe by spot welding;
④ Measuring the absolute coordinate of a pipe orifice of a connecting pipe at the front end of the wire dividing pipe, keeping the length and the angle of the inserted pipe orifice unchanged at the lower end, and translating the pipe orifice at the upper end until the pipe orifice coordinate is within the allowable error range;
⑤ And (3) welding and fixing the wire dividing pipe and the bracket system, and welding the wire dividing plate at the lower end and the whole circumference of the pipe orifice of the straight embedded pipe.
The manufacturing and installing method is characterized in that the installation of the wire dividing pipe involves the projection angle of the arc-shaped embedded pipe with the parameter alpha in the front anchor surface, and the projection angle can be calculated and determined according to the following method:
The line shape of one cable strand and the embedded pipe thereof can be divided into three sections, namely L1, L2 and L3, wherein L1 and L3 are straight line sections, L2 is a circular arc section, L3 is parallel to the resultant line of the main cable and is perpendicular to the front anchor surface and the rear anchor surface, and the three sections of lines are coplanar in space, and the surfaces are perpendicular to the front anchor surface and the rear anchor surface, so that the projection of the cable strand in the front anchor surface is a straight line.
A local coordinate system is established in the front anchor surface, wherein the intersection point of the main cable combining line and the front anchor surface is taken as an original point, the direction of the main cable combining line is taken as an X axis, the transverse axis is taken as a Y axis, and the vertical axis is taken as a Z axis;
Because L3 is perpendicular to the front anchor surface, the projection of the L3 on the front anchor surface is 1 point, the shape of the L3 in the front anchor surface cannot be changed when the L3 rotates around the central line of the L3, the projections of the L2 and the L3 on the front anchor surface are straight lines, and when the L3 rotates around the center of the L3 embedded pipe, the angle between the X axis and the straight line projected on the front anchor surface can be changed, namely alpha;
Therefore, the angle alpha can be calculated by only arbitrarily taking the coordinates (y 1,z1）、（y2,z2) of two points on L2 and L3;
Front end connecting pipe of thread dividing pipe the method for measuring the coordinates of the pipe orifice comprises the following steps:
and (3) measuring by adopting an auxiliary disc, namely manufacturing a disc with the inner diameter being 2mm larger than the outer diameter of the connecting pipe at the front end of the wire dividing pipe, accurately determining the center point position of the bottom at the outer side of the disc, and marking. And during measurement, the disc is covered on the connecting pipe, and the coordinates of the center of the bottom of the outer side of the disc are measured to obtain the coordinates of the front end of the wire dividing pipe.
The invention has the advantages that (1) the structure form of the anchorage arc-shaped rope strand embedded pipe of the suspension bridge is provided, the problem that a plurality of rope strands are mutually contacted, extruded and wound in the arc-shaped section embedded pipe to generate uneven stress is avoided, and (13) (2) the manufacturing and mounting method of the arc-shaped rope strand embedded pipe is provided. Solves the difficult problem of installing the circular section and arc-shaped embedded pipe, and has simple and convenient operation.
Drawings
FIG. 1 is an elevation line of an arcuate anchoring system;
FIG. 2 is a planar line of an arcuate anchoring system;
FIG. 3 is a projection of an arcuate strand on the anterior anchor face;
FIG. 4 is an elevation view of a pre-buried pipe;
FIG. 5 is a sectional view of the pre-buried pipe in an attitude after installation;
FIG. 6 is a drawing of a process for forming a split tube;
FIG. 7 is a cut-away view of a tube-splitting machine;
FIG. 8 is a straight pre-buried pipe orifice welded horizontal angle;
FIG. 9 shows that the lower end of the wire dividing pipe is inserted into the direct embedded pipe;
FIG. 10 is a tube alignment attitude;
FIG. 11 is a schematic view of a local coordinate system of a segmented linear section of a pre-buried pipe;
FIG. 12 is a schematic diagram of a connecting tube orifice coordinate measurement;
FIG. 13 is a cross-sectional view of the strand arrangement within the pre-buried pipe;
the cable strand anchoring device comprises a front anchoring surface 1, a rear anchoring surface 2, an arc cable strand anchoring system 3, a direct embedded pipe 4, a wire dividing pipe 5, a wire dividing plate 6, a connecting pipe 7, a jig frame 8, angle steel 9, an auxiliary disc 10, a prism 11, a total station 12 and an anchor cable 13.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 13, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides an arc-shaped rope strand embedded pipe structure of a suspension bridge anchorage system and a manufacturing and mounting method thereof by improving the structure, which mainly solve the problems of (1) providing a structure form of the arc-shaped rope strand embedded pipe of the suspension bridge anchorage, and avoiding the problem of uneven stress caused by mutual contact, extrusion and winding of a plurality of rope strands in an arc-shaped section embedded pipe (see figure 13). And (2) providing a manufacturing and installing method of the arc-shaped embedded pipe.
In the implementation, the structure of the arc strand embedded pipe is shown in fig. 4 and 5. In order to avoid the mutual contact extrusion and mutual winding of the strands in the circular arc section, a part of embedded pipes at the front ends of the straight line section L1, the circular arc section L2 and the straight line section L3 are designed into a wire dividing pipe consisting of a plurality of small steel pipes, and the embedded pipe at the rear end of the straight line section L3 adopts a straight steel pipe. The rear end of the wire dividing pipe is sleeved with 1 rectangular wire dividing plate at the position of 10cm, the 10cm pipe body is inserted into the direct embedded pipe, the front end of the wire dividing pipe is sleeved with 1 circular wire dividing plate and a circular connecting pipe with the length of 20cm, the wire dividing pipe is perpendicular to the wire dividing plate, and the connecting pipe is parallel to the axis of the wire dividing pipe. And after the installation is finished, the lower wire dividing plate is welded with the straight pre-buried pipe orifice.
The manufacturing and mounting method of the arc-shaped cable strand embedded pipe comprises the following steps:
Because the length of the embedded pipe of the arc-shaped strand of the suspension bridge is generally more than 30m, if the whole cable is manufactured and installed, the cable is easy to deform in the transportation and installation processes, and therefore, a method for manufacturing and installing the cable in a segmented mode is selected, namely, the direct embedded pipe and the cable dividing pipe are manufactured separately, the lower direct embedded pipe is manufactured and installed firstly, and then the cable dividing pipe at the upper part is manufactured and installed.
Before the embedded pipe is installed, a support is erected inside the anchorage by adopting section steel and used for supporting and fixing the embedded pipe.
The direct embedded pipe is a whole steel pipe, the pipe orifice is controlled to be vertical to the axis of the direct embedded pipe during manufacturing, and during installation, the center coordinates of the sections at the two ends are only measured, and the pipe orifice is adjusted to the allowable error of design.
The key of the installation of the wire dividing pipe is the measurement of the posture and the position of the wire dividing pipe, and the measurement control can be carried out from both the wire dividing plate and the connecting pipe. (1) The method comprises the steps of (1) designing a wire dividing plate connected with a straight embedded pipe into a rectangle, reflecting the projection angle alpha of the wire dividing pipe in a front anchor surface through the rotation angle of the rectangular wire dividing plate, thereby adjusting the posture of the wire dividing pipe, and (2) controlling the position of the wire dividing pipe in the front anchor surface through the central coordinate of the pipe orifice of the connecting pipe.
The manufacturing method of the wire dividing pipe comprises the steps of ① firstly manufacturing a single small steel pipe into an arc shape by using a pipe bending machine, ② placing a plurality of arc-shaped small steel pipes on a jig frame, keeping the arc sections naturally drooping to form 1 bundle, fixing 1 section according to each 1m, welding and fixing the small steel pipes with the sections, sleeving two ends of the ③ wire dividing pipe into a wire dividing plate, adjusting the rectangular edge at the top of the rear end rectangular wire dividing plate to be in a horizontal state by using a leveling rod (which is very important), controlling the vertical relation between the wire dividing plate and the wire dividing pipe by using an angle square, welding and fixing the two by using a straight steel pipe with the length of 20cm, sleeving the front end of ④ into the 1 section of straight steel pipe as a connecting pipe, perpendicular to the wire dividing plate, centering the wire dividing pipe in the connecting pipe, enabling the axes of the two to be parallel, and welding the connecting pipe and the wire dividing plate. See fig. 6 and 7.
And before ① is installed, installing a straight angle steel above the pipe orifice at the top of the straight embedded pipe, ensuring that one surface of the angle steel is coplanar with the section of the pipe orifice, adjusting the level of the edge at the top of the angle steel by adopting a leveling rod, and spot-welding and fixing the angle steel with the straight embedded pipe, wherein the figure 8 is shown. ② The wire dividing pipe is transported by a crane, and the lower end of the wire dividing pipe is inserted into the direct embedded pipe and is tightly attached to the angle steel, as shown in fig. 9. At this time, the arc section of the yarn dividing tube still naturally sags, the axis of the whole yarn dividing tube is in a vertical plane, and the edge at the top of the rectangular yarn dividing plate is in a horizontal posture. ③ The method comprises the steps of installing a chain block on a support, hanging the middle part and the end part of a wire dividing pipe, rotating the wire dividing pipe by winding and unwinding the chain block, enabling one edge of a rectangular wire dividing plate to rotate relative to angle steel, measuring the included angle between the top edge of the wire dividing plate and the angle steel by using an electronic protractor, comparing the included angle with alpha, and continuing to rotate the wire dividing pipe and adjusting the wire dividing pipe until the angle meets the allowable error when the angle does not meet the error requirement. And (3) fixing the wire dividing plate and the pipe orifice of the straight embedded pipe by spot welding. See fig. 10. ④ And measuring the absolute coordinate of the pipe orifice of the connecting pipe at the front end of the wire dividing pipe, keeping the length and the angle of the inserted pipe orifice unchanged at the lower end, and translating the pipe orifice at the upper end until the pipe orifice coordinate is within the allowable error range. See fig. 12. ⑤ And (3) welding and fixing the wire dividing pipe and the bracket system, and welding the wire dividing plate at the lower end and the whole circumference of the pipe orifice of the straight embedded pipe.
The installation of the filament dividing pipe involves the projection angle of the arc-shaped embedded pipe with the parameter alpha in the front anchor surface, and can be calculated and determined according to the following method:
as shown in fig. 11, the line shape of one strand and the embedded pipe thereof can be divided into three sections, namely L1, L2 and L3, wherein L1 and L3 are straight line sections, L2 is a circular arc section, L3 is parallel to the resultant force line of the main cable and is perpendicular to the front anchor surface and the rear anchor surface, and the three sections of lines are coplanar in space and perpendicular to the front anchor surface and the rear anchor surface, so that the projection of the strand in the front anchor surface is a straight line.
And establishing a local coordinate system in the front anchor surface, wherein an intersection point of the main cable combining line and the front anchor surface is taken as an original point, the direction of the main cable combining line is taken as an X axis, the transverse axis is taken as a Y axis, and the vertical axis is taken as a Z axis.
Because L3 is perpendicular to the front anchor surface, the projection of the L3 on the front anchor surface is 1 point, the L3 rotates around the central line of the L3 and does not change the shape of the L2 and the L3 on the front anchor surface, the projection of the L2 and the L3 on the front anchor surface is a straight line, and when the L3 embedded pipe rotates around the center of the L3 embedded pipe, the angle between the X axis and the straight line projected on the front anchor surface is changed, and the angle is alpha.
Therefore, the angle α can be calculated by taking the coordinates (y 1,z1）、（y2,z2) of two points at will on L2 and L3.
Front end connecting pipe of thread dividing pipe the method for measuring the coordinates of the pipe orifice comprises the following steps:
and (3) measuring by adopting an auxiliary disc, namely manufacturing a disc with the inner diameter being 2mm larger than the outer diameter of the connecting pipe at the front end of the wire dividing pipe, accurately determining the center point position of the bottom at the outer side of the disc, and marking. And during measurement, the disc is covered on the connecting pipe, and the coordinates of the center of the bottom of the outer side of the disc are measured to obtain the coordinates of the front end of the wire dividing pipe.
The patent has the following advantages:
(1) The utility model provides a suspension bridge anchorage arc cable strand embedded pipe structure form, which avoids the problem of uneven stress caused by mutual contact, extrusion and winding of a plurality of cable strands in an arc section embedded pipe (see figure 13)
(2) The manufacturing and installing method of the arc cable strand embedded pipe is provided. Solves the difficult problem of installing the circular section and arc-shaped embedded pipe, and has simple and convenient operation.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. A manufacturing and installing method of an arc cable strand embedded pipe of an anchorage anchoring system of a suspension bridge is characterized by comprising the following steps of;
The corresponding anchoring system is provided with a straight line section L1, an arc section L2 and a straight line section L3, wherein a part of embedded pipes at the front ends of the straight line section L1, the arc section L2 and the straight line section L3 are designed into a wire dividing pipe consisting of a plurality of small steel pipes, the embedded pipe at the rear end of the straight line section L3 adopts a straight steel pipe, a 10cm part of the rear end of the wire dividing pipe is sleeved with 1 rectangular wire dividing plate, a 10cm pipe body is inserted into the straight embedded pipe, a 10cm part of the front end of the wire dividing pipe is sleeved with 1 circular wire dividing plate and a 20cm long circular connecting pipe, the wire dividing pipe is perpendicular to the wire dividing plate, the connecting pipe is parallel to the axis of the wire dividing pipe, and the lower wire dividing plate is welded with the straight embedded pipe orifice after the installation is finished;
Because the length of the embedded pipe of the arc strand of the suspension bridge is generally more than 30m, if the whole cable is manufactured and installed, the cable is easy to deform in the process of transportation and installation, therefore, a method for manufacturing and installing in sections is selected, namely, the direct embedded pipe and the wire dividing pipe are manufactured separately, the lower direct embedded pipe is manufactured and installed firstly, and then the upper wire dividing pipe is manufactured and installed;
before the embedded pipe is installed, a bracket is erected in the anchorage by adopting section steel and is used for supporting and fixing the embedded pipe;
when in installation, the pipe orifice is only required to be measured to be adjusted to the allowable error of design;
The key of the installation of the wire dividing pipe is that the posture and the position of the wire dividing pipe are measured and controlled from the wire dividing plate and the connecting pipe, 1 the wire dividing plate connected with the straight embedded pipe is designed into a rectangle, the projection angle alpha of the wire dividing pipe in the front anchor surface is reflected through the rotation angle of the rectangular wire dividing plate, thereby adjusting the posture of the wire dividing pipe, and 2 the position of the wire dividing pipe in the front anchor surface is controlled through the central coordinate of the pipe orifice of the connecting pipe;
Before ① is installed, installing a straight angle steel above the pipe orifice at the top of the straight embedded pipe, ensuring that one surface of the angle steel is coplanar with the section of the pipe orifice, adjusting the level of the edge at the top of the angle steel by adopting a leveling rod, and spot-welding and fixing the angle steel with the straight embedded pipe;
② The wire dividing pipe is transported by a crane, the lower end of the wire dividing pipe is inserted into the direct embedded pipe and is tightly attached to the angle steel;
At the moment, the arc section of the yarn dividing pipe still naturally sags, the axis of the whole yarn dividing pipe is in a vertical plane, and the edge at the top of the rectangular yarn dividing plate is in a horizontal posture;
③ The method comprises the steps of installing a chain block on a bracket, hanging the middle part and the end part of a wire dividing pipe, rotating the wire dividing pipe by winding and unwinding the chain block, enabling one edge of a rectangular wire dividing plate to rotate relative to angle steel, measuring the included angle between the top edge of the wire dividing plate and the angle steel by using an electronic protractor, comparing the included angle with alpha, and continuing to rotate the wire dividing pipe and adjusting the wire dividing pipe until the angle meets the error requirement and stopping rotating the wire dividing plate until the angle meets the allowable error;
④ Measuring the absolute coordinate of a pipe orifice of a connecting pipe at the front end of the wire dividing pipe, keeping the length and the angle of the inserted pipe orifice unchanged at the lower end, and translating the pipe orifice at the upper end until the pipe orifice coordinate is within the allowable error range;
⑤ And (3) welding and fixing the wire dividing pipe and the bracket system, and welding the wire dividing plate at the lower end and the whole circumference of the pipe orifice of the straight embedded pipe.
2. A manufacturing and installing method according to claim 1 is characterized in that ① of a wire dividing pipe is manufactured by manufacturing a single small steel pipe into an arc shape through a pipe bending machine, ② of placing a plurality of arc-shaped small steel pipes on a jig frame, keeping arc sections naturally drooping to form 1 bundle, fixing 1 section per 1m, welding and fixing the small steel pipes with the sections, sleeving two ends of a ③ wire dividing pipe into a wire dividing plate, adjusting the rectangular edge at the top of the rear end of the rectangular wire dividing plate to be horizontal through a leveling rod, controlling the vertical relation between the wire dividing plate and the wire dividing pipe through an angle square, welding and fixing the two by adopting a straight steel pipe with the front end of ④ sleeved with 1 section of 20cm as a connecting pipe, perpendicular to the wire dividing plate, centering the wire dividing pipe in the connecting pipe and enabling axes of the two to be parallel, and welding the connecting pipe and the wire dividing plate.
3. The manufacturing and installation method according to claim 1, wherein the installation of the branching pipe involves the calculation and determination of the projection angle of the arc-shaped embedded pipe in the front anchor surface according to the following method:
The line shape of one cable strand and the embedded pipe thereof can be divided into three sections, namely L1, L2 and L3, wherein L1 and L3 are straight line sections, L2 is a circular arc section, L3 is parallel to the resultant line of the main cable and is vertical to the front anchor surface and the rear anchor surface, and the three sections of lines are coplanar in space and vertical to the front anchor surface and the rear anchor surface, so that the projection of the cable strand in the front anchor surface is a straight line;
A local coordinate system is established in the front anchor surface, wherein the intersection point of the main cable combining line and the front anchor surface is taken as an original point, the direction of the main cable combining line is taken as an X axis, the transverse axis is taken as a Y axis, and the vertical axis is taken as a Z axis;
Because L3 is perpendicular to the front anchor surface, the projection of the L3 on the front anchor surface is 1 point, the shape of the L3 in the front anchor surface cannot be changed when the L3 rotates around the central line of the L3, the projections of the L2 and the L3 on the front anchor surface are straight lines, and when the L3 rotates around the center of the L3 embedded pipe, the angle between the X axis and the straight line projected on the front anchor surface can be changed, namely alpha;
Therefore, the angle alpha can be calculated by only arbitrarily taking the coordinates (y 1,z1）、（y2,z2) of two points on L2 and L3;
front end connecting pipe of thread dividing pipe a pipe orifice coordinate measuring method;
the method comprises the steps of measuring by adopting an auxiliary disc, namely, manufacturing a disc with the inner diameter being 2mm larger than the outer diameter of a connecting pipe at the front end of the wire dividing pipe, accurately determining the center point position of the bottom at the outer side of the disc, marking, covering the disc on the connecting pipe during measurement, and measuring the coordinates of the center of the bottom at the outer side of the disc, so as to obtain the coordinates of the front end of the wire dividing pipe.
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| CN107034785A (en) * | 2017-05-24 | 2017-08-11 | 柳州欧维姆机械股份有限公司 | Rope construction method is changed in a kind of interchangeable anchorage prestress anchoraging device and its installation |
| CN220927515U (en) * | 2023-08-24 | 2024-05-10 | 四川路桥华东建设有限责任公司 | Arc cable strand embedded pipe structure of suspension bridge anchorage anchoring system |
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| CN109898414B (en) * | 2019-03-18 | 2024-05-24 | 中国石油天然气集团有限公司 | Suspension cable pipeline bridge tunnel type anchorage main cable anchoring system |
| CN110593098B (en) * | 2019-10-09 | 2024-04-16 | 长江水利委员会长江科学院 | Bell type anchorage structure of suspension bridge and construction method thereof |
| CN112161612B (en) * | 2020-09-22 | 2022-08-05 | 中交二航局第四工程有限公司 | Suspension bridge anchoring system space attitude determination method based on unstable anchorage |
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| CN107034785A (en) * | 2017-05-24 | 2017-08-11 | 柳州欧维姆机械股份有限公司 | Rope construction method is changed in a kind of interchangeable anchorage prestress anchoraging device and its installation |
| CN220927515U (en) * | 2023-08-24 | 2024-05-10 | 四川路桥华东建设有限责任公司 | Arc cable strand embedded pipe structure of suspension bridge anchorage anchoring system |
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