Transverse-separation and vertical-rotation rapid construction process and equipment for full-fabricated bridge

Abstract

The invention relates to a technology and equipment for rapidly building a full-fabricated bridge in a transverse-dividing and vertical-rotating mode. The building technology comprises the following steps that S1, a vertical-rotating base is installed on the top face of a bearing platform; s2, the two prefabricated bridge piers are hoisted, reamed holes in the pier feet of the prefabricated bridge piers are hinged to reamed holes in the vertical rotating base till the prefabricated bridge piers make contact with the ground cutting plane, and the moving trolley is placed in place; s3, transversely-divided cover beams are hoisted, the inclination angles of the transversely-divided cover beams are controlled, the transversely-divided cover beams are placed on the horizontally-spliced platform, and pier beam consolidation operation between the two transversely-divided cover beams and the prefabricated pier is completed; s4, a vertical rotating tower is installed on the lower side of the pier body of the prefabricated pier, and a vertical rotating inhaul cable is matched; and S5, through the ground anchor pulling force, the vertical rotating inhaul cable drives the vertical rotating tower, the transverse dividing cover beam and the prefabricated pier to vertically rotate around the rotating hinge at the vertical rotating base, and the prefabricated pier is fastened to the vertical rotating base. According to the method, complicated procedures such as aerial posture adjustment and precise butt joint construction of heavy components are avoided, the utilization rate of a large crane is reduced, and the assembly precision and efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the field of rapid bridge construction, and more specifically to a "horizontal division and vertical rotation" rapid construction process and equipment for a fully assembled bridge. Background Art

[0002] Compared with traditional cast-in-place elevated beam bridges, fully assembled bridges with integrated piers and cap beams reduce redundant processes such as fixed formwork, large-volume concrete on-site pouring and maintenance, and have better construction quality and more efficient construction speed. Its on-site construction is mainly based on component transportation and equipment hoisting. The dust and noise generated during the construction process are low, and the disturbance to the surrounding environment is small. It is more suitable for existing bridge widening and existing road elevated transformation projects under complex urban construction conditions. Fully assembled bridge technology has been put into practical use in Zhejiang and Shanghai, and has been gradually promoted to the whole country for pilot project construction. Its construction technology is becoming more mature. Among the various technical indicators of assembled bridges, the weight of components is an important consideration factor. Among them, the precast concrete cap beam between the bridge deck system and the precast piers has the largest single unit weight due to its solid cross-section design. The transportation and hoisting problems restricted by its own weight often become the key to how and whether the design and construction of fully assembled bridges can be implemented.

[0003] The construction methods currently available for prefabricated assembled cap beams include: multi-section cap beam method, two-section cap beam method, steel shoulder beam method, socket method, padlock method, counterweight method (post-anchoring method), layered assembly method, etc. Due to their smaller external dimensions, foreign assembled cap beams often adopt the socket method combined with overall hoisting. Compared with similar foreign projects, my country's assembled cap beams have high seismic requirements and large design spans. The most widely used construction technology is still the two-section cap beam method. However, the actual construction feedback of the two-section cap beam method shows that the large-volume mold casting operation in the span of the cap beam is time-consuming and labor-intensive; the loading and unloading of the temporary support structure is complicated and occupies too many lanes; the adjustment of the posture of the left and right half of the cap beam in the air is difficult; the accuracy of the connection between the pipe and the steel bar in the span of the cap beam is poor. The above factors together lead to the low construction efficiency of assembled cap beams, and the construction efficiency needs to be improved. The main reason is that the segmented section of the cap beam is set in the center along the direction of the lane.

[0004] Based on the problems faced in the application of the above-mentioned "two-section cap beam method", the use of an integrated transversely cut cap beam has broad application prospects, but the size of the connecting sleeve between the integrated prefabricated cap beam and the lower pier is limited, and the poor verticality of the prefabricated pier construction will directly lead to the inability of the integrated cap beam to be placed in place, seriously affecting the efficiency of prefabricated bridge construction. The high construction accuracy requirements of prefabricated piers have become the main bottleneck of integrated bridge assembly technology. The above-mentioned prefabricated cap beam assembly has problems such as low efficiency and high construction accuracy requirements of prefabricated piers. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a "horizontal division and vertical rotation" rapid construction process and equipment for a fully assembled bridge, which can comprehensively consider construction efficiency and precision, reasonably integrate integrated cap beams for rapid assembly of bridges, greatly improve construction efficiency, and greatly reduce traditional redundant processes such as large-volume concrete formwork pouring, aerial docking and prestressed construction operations, and auxiliary temporary pier operations.

[0006] The technical solution adopted by the present invention to solve the technical problem is to construct a "horizontal division and vertical rotation" rapid construction process for a fully assembled bridge, including the following steps:

[0007] S1. Install the vertical rotation base to the top surface of the pedestal, and cut out a plane on the ground pit side in advance according to the inclination angle of the pier during horizontal assembly, and transport it to the horizontal assembly platform to the designated position in advance;

[0008] S2, hoisting two prefabricated bridge piers, so that the reaming holes at the pier feet of the prefabricated bridge piers are hinged with the reaming holes of the vertical rotation base, and then lowering the prefabricated bridge piers until the prefabricated bridge piers are in contact with the ground cutting plane;

[0009] S3, hoist the transverse cap beam, control the inclination angle of the transverse cap beam, place the transverse cap beam on the horizontal assembly platform, complete the constraint between the two transverse cap beams and the consolidation of the piers and beams between the two prefabricated piers;

[0010] S4. Install a vertical rotation tower on the lower side of the prefabricated pier and match it with a vertical rotation cable;

[0011] S5. Through the tension of the anchor, the vertical rotation cable drives the vertical rotation tower, the horizontal cap beam and the prefabricated bridge pier to rotate vertically around the hinge at the vertical rotation base until the vertical rotation base and the prefabricated bridge pier are completely fitted together, and the prefabricated bridge pier is fastened to the vertical rotation base.

[0012] According to the above scheme, in step S1, the vertical rotation base is installed to the top surface of the pedestal by pre-embedded steel bars.

[0013] According to the above scheme, in step S2, after the prefabricated bridge pier contacts the ground cutting plane, the support height of the horizontal assembly platform is adjusted.

[0014] According to the above scheme, in step S3, the transverse cap beam includes a first transverse cap beam and a second transverse cap beam, and completing the pier-beam consolidation operation between the transverse cap beam and the prefabricated pier includes the following steps:

[0015] S301, controlling the inclination angle of the first transverse cap beam, placing the first transverse cap beam on the horizontal assembly platform, and then slowly sliding the first transverse cap beam down along the horizontal assembly platform until the first transverse cap beam is butted against the embedded steel bar holes of the two prefabricated bridge piers at the same time;

[0016] S302, after completing the connection between the second transverse cap beam and the prefabricated bridge pier, and tightening the first transverse cap beam and the second transverse cap beam in opposite directions, the pier-beam consolidation operation between the transverse cap beam and the prefabricated bridge pier is completed.

[0017] According to the above scheme, the first transverse cap beam is the left limb of the transverse cap beam, and the second transverse cap beam is the right limb of the transverse cap beam; the first transverse cap beam and the second transverse cap beam are symmetrically arranged and corresponding docking pin holes are arranged.

[0018] According to the above scheme, when the first transverse cap beam and the second transverse cap beam are butt-jointed, the adhesive material is first applied on the bonding interface. After they are laid horizontally in place, pre-compression and tightening are completed in the butt pin holes through bolts or prestressed structures, and pad stone construction is carried out to form a complete cap beam and assist in the consolidation of the pier beam.

[0019] According to the above solution, in step S4, the vertical tower can rotate around the installation point of the prefabricated pier.

[0020] According to the above solution, in step S5, the prefabricated piers are fastened to the vertical rotation base by bolts.

[0021] The present invention also provides a "horizontal division and vertical rotation" rapid construction equipment for a fully assembled bridge, comprising a horizontal division cap beam, a prefabricated pier and a vertical rotation base; the reamed holes at the pier feet of the prefabricated pier are firmly hinged to the reamed holes of the vertical rotation base, a vertical rotation tower is arranged at the lower position of the pier body of the prefabricated pier, a vertical rotation cable is arranged at the upper position of the pier body of the prefabricated pier, the vertical rotation base is arranged on the top surface of the pedestal, and a horizontal division cap beam is arranged on the top of the prefabricated pier.

[0022] According to the above scheme, the vertical rotation base is arranged on the top surface of the pedestal through embedded steel bars, the transverse cap beam is arranged on the horizontal platform, and the horizontal platform and the prefabricated piers are both arranged on the ground.

[0023] The "horizontal division and vertical rotation" rapid construction process and equipment for the fully assembled bridge of the present invention have the following beneficial effects:

[0024] 1. The present invention cuts the prefabricated cap beam into two parts in half along the transverse direction of the bridge, uses an auxiliary on-site platform, performs horizontally split cap beams, horizontally assembles prefabricated bridge piers, and then vertically rotates and installs them in place, so that the manufacturing and transportation are convenient. The cap beam after the horizontal split has a component size similar to that of a conventional small box beam component, and the manufacturing, transportation and hoisting construction are more convenient, thus overcoming the limitations in transportation and hoisting and improving the overall construction efficiency.

[0025] 2. The present invention is easy to assemble on site. With the help of the slightly inclined working platform at the construction site, the horizontal cap beam and the prefabricated bridge pier can be finely connected with the grouting sleeve before the overall lifting, which completely avoids the cumbersome procedures such as the aerial posture adjustment and precise docking construction of bulky components, reduces the utilization rate of large cranes, and improves the precision and efficiency of assembly;

[0026] 3. The vertical rotation construction of the present invention is convenient, the vertical rotation tower is easy to disassemble and can be reused, the construction site has ample space, the vertical rotation lateral tension required by the anchor is gradually reduced with the rotation of the integrated lower structure pier beam, and the high-precision grouting posture adjustment is completely feasible. The overall structure is lifted and put into place in one piece, which can greatly improve the construction efficiency and greatly reduce the traditional redundant processes such as large-volume concrete formwork pouring, aerial docking and prestressed construction operations, and auxiliary temporary pier operations;

[0027] 4. The horizontal cap beam technology of the present invention has strong adaptability, and the size and shape of the segments can be adjusted according to specific engineering requirements. The vertical rotation construction technology has strong scalability and is suitable for pier-foundation connections of various cross-sectional sizes, and can be applied to different types of buildings and bridge projects;

[0028] 5. The transverse cap beam of the present invention is cut on the long side, which greatly reduces the large-volume concrete pouring operation on site, thereby saving the concrete age and improving the overall construction efficiency. It can be directly installed on the existing double-column bridge piers without the need to construct temporary piers, which greatly saves the amount of auxiliary facilities. The size is close to that of conventional small box beams, and can meet the requirements of interval transportation and site hoisting equipment. The long strip lifting component can be adjusted more conveniently in the air, and the prestressing tensioning, whole beam maintenance and other processes can be completed in the prefabricated beam yard, which greatly improves the quality of prefabricated components and effectively saves on-site prestressing installation time.

[0029] 6. The cap beam and the bridge pier in the present invention are first "lying down" spliced ​​at the construction site. The construction error of the pier-beam connection can be easily adjusted during the horizontal splicing process, effectively avoiding the high-altitude operation of the large-volume and large-mass cap beam. After the horizontal cap beam and the bridge pier are tightly connected, the modular tower is connected to the anchor after the cable, and the one-time vertical pier beam is installed in place. The construction accuracy is controllable, the construction efficiency of the bridge substructure is greatly improved, and it is also compatible with intelligent construction technology. It is an effective supplement to the construction industry's transformation to the manufacturing industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0031] Figure 1 It is a schematic diagram of the horizontal division and horizontal assembly of the "horizontal division and vertical rotation" rapid construction process of the fully assembled bridge of the present invention;

[0032] Figure 2It is a side view of the horizontal division and horizontal assembly of the "horizontal division and vertical rotation" rapid construction process of the fully assembled bridge of the present invention;

[0033] Figure 3 It is a front view of the horizontal division and horizontal assembly of the "horizontal division and vertical rotation" rapid construction process of the fully assembled bridge of the present invention;

[0034] Figure 4 It is a schematic diagram of the structure placement of the construction process of the substructure of the fully assembled bridge of the present invention, which is a "horizontally divided and vertically rotated" assembled bridge;

[0035] Figure 5 This is a detailed structural diagram of the "horizontally divided" prefabricated cap beam of the present invention;

[0036] In the figure: 1. horizontally divided cap beam, 2. prefabricated bridge pier, 3. vertically rotated tower frame, 4. vertically rotated base, 5. vertically rotated cable, 6. horizontally assembled platform, 7. ground, 8. top surface of pedestal, 9. left limb of horizontally divided cap beam, 10. right limb of horizontally divided cap beam, 11. docking pin hole, 12. bonding interface, 13. cushion stone. DETAILED DESCRIPTION

[0037] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0038] like Figure 1-5 As shown, the "horizontally divided and vertically rotated" rapid construction process of the fully assembled bridge of the present invention has a main structure of a horizontally divided cap beam 1 and a prefabricated bridge pier 2, and includes the following steps:

[0039] S1, before the horizontal cap beam 1 and the prefabricated bridge pier 2 are hoisted to the construction site, the vertical rotation base 4 is first installed on the top surface 8 of the pedestal by pre-embedded steel bars, and a certain plane is cut on the pit side of the ground 7 in advance according to the inclination angle of the bridge pier during horizontal assembly, and then transported to the horizontal assembly platform 6 to the designated position in advance;

[0040] S2. The formal construction begins. First, the tilt angle is slightly adjusted, and two prefabricated piers 2 are hoisted so that the reaming holes at the pier feet of the prefabricated piers 2 are firmly hinged with the reaming holes of the vertical rotation base 4. Then, the prefabricated piers 2 are slowly lowered until the prefabricated piers 2 are in contact with the cutting plane of the ground 7. Then, the supporting height of the horizontal assembly platform 6 is adjusted. After the above three points are in contact, the lifting rope is removed.

[0041] S3, hoisting the transverse cap beam 1, controlling the inclination angle of the transverse cap beam 1, placing the transverse cap beam 1 on the horizontal assembly platform 6, completing the constraint between the two transverse cap beams 1 and the pier-beam consolidation operation between the two transverse cap beams 1 and the prefabricated bridge piers 2, specifically including the following steps:

[0042] S301, controlling the inclination angle of the first transverse cap beam, placing the first transverse cap beam on the horizontal assembly platform 6, and then slowly sliding the first transverse cap beam down along the horizontal assembly platform 6 until the first transverse cap beam is butted against the embedded steel bar holes of the two prefabricated bridge piers at the same time;

[0043] S302, complete the docking of the second transverse cap beam and the prefabricated pier 2, tighten the first transverse cap beam and the second transverse cap beam in opposite directions, and complete the pier-beam consolidation operation between the transverse cap beam 1 and the prefabricated pier 2.

[0044] The transverse cap beam 1 includes a first transverse cap beam and a second transverse cap beam; the first transverse cap beam is the left limb 9 of the transverse cap beam, and the second transverse cap beam is the right limb 10 of the transverse cap beam; the first transverse cap beam and the second transverse cap beam are symmetrically arranged and correspondingly arranged with docking pin holes 11. When the first transverse cap beam and the second transverse cap beam are docked, the adhesive material is first applied on the bonding interface 12. After being horizontally assembled in place, pre-compression and tightening are completed in the docking pin holes 11 through bolts or prestressed structures, and the pad stone 13 is constructed to form a complete cap beam to assist in the consolidation of the pier beam. Lifting the transverse cap beam 1: control the inclination angle of the first transverse cap beam, first place the first transverse cap beam on the horizontal assembly platform 6, then slowly slide the first transverse cap beam down along the horizontal assembly platform 6 until the first transverse cap beam is simultaneously docked with the embedded steel bar holes of the two prefabricated piers 2, and then complete the docking of the second transverse cap beam and the prefabricated pier 2 in turn. After tightening the two transverse cap beams in opposite directions, the pier-beam consolidation operation between the transverse cap beam 1 and the prefabricated pier 2 is completed.

[0045] S4, installing a vertical rotation tower 3 on the lower side of the prefabricated pier 2, and matching the vertical rotation cable 5, the vertical rotation tower 3 can rotate around the installation point of the prefabricated pier 2;

[0046] After the transverse cap beam 1 and the prefabricated pier 2 are integrated, a vertical rotation tower 3 is installed on the lower side of the prefabricated pier 2. The vertical rotation tower 3 can rotate around the installation point and then match the vertical rotation cable 5.

[0047] S5. Through the anchor tension, the vertical rotation cable 5 drives the vertical rotation tower 3, the horizontal cap beam 1 and the prefabricated bridge pier 2 to rotate vertically around the hinge at the vertical rotation base 4 until the vertical rotation base 4 and the prefabricated bridge pier 2 are completely fitted together, and the prefabricated bridge pier 2 is fastened to the vertical rotation base 4. Install the fastening bolts at the fitting place, and after fine-tuning the posture, use the bolts to fasten the prefabricated bridge pier 2 to the vertical rotation base 4.

[0048] S6. After the vertical rotation construction is completed, the vertical rotation tower 3 and the vertical rotation cable 5 can be dismantled and transported together with the horizontal assembly platform 6 to the next workstation for rotation use.

[0049] The present invention also provides a "horizontal division and vertical rotation" rapid construction equipment for a fully assembled bridge, comprising a horizontal division cap beam 1, a prefabricated pier 2 and a vertical rotation base 4; the reaming holes at the pier feet of the prefabricated pier 2 are firmly hinged with the reaming holes of the vertical rotation base 4, a vertical rotation tower 3 is arranged at the lower position of the pier body of the prefabricated pier 2, a vertical rotation cable 5 is arranged at the upper position of the pier body of the prefabricated pier 2, the vertical rotation base 4 is arranged on the top surface 8 of the pedestal, a horizontal division cap beam 1 is arranged on the top of the prefabricated pier 2, the vertical rotation base 4 is arranged on the top surface 8 of the pedestal through embedded steel bars, the horizontal division cap beam 1 is arranged on the horizontal assembly platform 6, and the horizontal assembly platform 6 and the prefabricated pier 2 are both arranged on the ground 7.

[0050] Working principle of the present invention:

[0051] The "horizontally divided and vertically rotated" assembly bridge rapid construction process of the present invention utilizes the skills of vertical rotation construction. In vertical rotation construction, the great horizontal tension is provided by the ground anchor, but the arm length between the ground anchor point and the rotation point is not enough, so a temporary tower is used to increase the main force arm, which helps to use a smaller tension to rotate the structure. As the rotation proceeds, although the main force arm gradually decreases, the tipping moment of the structure is also greatly reduced, so the ground anchor force in the vertical rotation construction will become smaller and smaller. This is the mechanical balance principle used in vertical rotation construction.

[0052] In the preferred embodiment of the present invention, the "horizontal division and vertical rotation" rapid construction process of the fully assembled bridge can be realized by other forms or combinations of cap beam cutting processes, and the present invention reserves the right to realize the combination form of its cap beam horizontal division; the interface bonding and pin hole docking process between the segmented cap beams of the "horizontal division method" can be realized by other forms or combinations of structures and devices, and the present invention reserves the right to its assembly implementation method; the "horizontal division and vertical rotation" rapid construction process of the fully assembled bridge can be realized by other rotation construction processes, and the present invention reserves the right to combine and expand its horizontally assembled bridge pier and beam lower structure integrated in place construction method. The "horizontal division method" large-volume prefabricated cap beam segmentation method of the present invention, which is cut in half along the horizontal bridge direction perpendicular to the lane, is combined with the horizontal assembly on the lifting platform site, and after the integrated piers and beams are connected, a new type of bridge rapid construction process is carried out for vertical rotation and installation with the help of a bearing platform, and also involves the research and development of its construction auxiliary equipment.

[0053] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A "horizontal division and vertical rotation" rapid construction process for a fully assembled bridge, characterized in that: The following steps are involved: S1. Install the vertical rotation base to the top surface of the pedestal, and cut out a plane on the ground pit side in advance according to the inclination angle of the pier during horizontal assembly, and transport it to the horizontal assembly platform to the designated position in advance; S2, hoisting two prefabricated bridge piers, so that the reaming holes at the pier feet of the prefabricated bridge piers are hinged with the reaming holes of the vertical rotation base, and then lowering the prefabricated bridge piers until the prefabricated bridge piers are in contact with the ground cutting plane; S3, hoist the transverse cap beam, control the inclination angle of the transverse cap beam, place the transverse cap beam on the horizontal assembly platform, complete the constraint between the two transverse cap beams and the consolidation of the piers and beams between the two prefabricated piers; S4. Install a vertical rotation tower on the lower side of the prefabricated pier and match it with a vertical rotation cable; S5. Through the tension of the anchor, the vertical rotation cable drives the vertical rotation tower, the horizontal cap beam and the prefabricated bridge pier to rotate vertically around the hinge at the vertical rotation base until the vertical rotation base and the prefabricated bridge pier are completely fitted together, and the prefabricated bridge pier is fastened to the vertical rotation base.

2. The "horizontal division and vertical rotation" rapid construction process for a fully assembled bridge according to claim 1 is characterized in that: In the step S1, the vertical rotation base is installed on the top surface of the pedestal by pre-embedded steel bars.

3. The "horizontal division and vertical rotation" rapid construction process for a fully assembled bridge according to claim 1 is characterized in that: In step S2, after the prefabricated bridge pier contacts the ground cutting plane, the support height of the horizontal assembly platform is adjusted.

4. The "horizontal division and vertical rotation" rapid construction process for a fully assembled bridge according to claim 1 is characterized in that: In step S3, the transverse cap beam includes a first transverse cap beam and a second transverse cap beam, and completing the pier-beam consolidation operation between the transverse cap beam and the prefabricated bridge pier includes the following steps: S301, controlling the inclination angle of the first transverse cap beam, placing the first transverse cap beam on the horizontal assembly platform, and then slowly sliding the first transverse cap beam down along the horizontal assembly platform until the first transverse cap beam is butted against the embedded steel bar holes of the two prefabricated bridge piers at the same time; S302, after completing the connection between the second transverse cap beam and the prefabricated bridge pier, and tightening the first transverse cap beam and the second transverse cap beam in opposite directions, the pier-beam consolidation operation between the transverse cap beam and the prefabricated bridge pier is completed.

5. The "horizontal division and vertical rotation" rapid construction process for a fully assembled bridge according to claim 4 is characterized in that: The first transverse cap beam is the left limb of the transverse cap beam, and the second transverse cap beam is the right limb of the transverse cap beam; the first transverse cap beam and the second transverse cap beam are symmetrically arranged and have corresponding docking pin holes.

6. The "horizontal division and vertical rotation" rapid construction process for a fully assembled bridge according to claim 5 is characterized in that: When the first transverse cap beam and the second transverse cap beam are butt-jointed, adhesive material is first applied to the bonding interface. After they are laid horizontally in place, pre-compression and tightening are completed in the butt pin holes through bolts or prestressed structures, and pad stone construction is carried out to form a complete cap beam and assist in consolidation of the pier beam.

7. The "horizontal division and vertical rotation" rapid construction process for a fully assembled bridge according to claim 1 is characterized in that: In the step S4, the vertical tower can rotate around the installation point of the prefabricated bridge pier.

8. The "horizontal division and vertical rotation" rapid construction process for a fully assembled bridge according to claim 1 is characterized in that: In step S5, the prefabricated bridge piers are fastened to the vertical rotation base by bolts.

9. A fully assembled bridge "horizontally divided and vertically rotated" rapid construction equipment, characterized in that: It includes a transverse cap beam, a prefabricated pier and a vertical rotation base; the reaming holes at the pier feet of the prefabricated pier are firmly hinged with the reaming holes of the vertical rotation base, a vertical rotation tower is arranged at the lower position of the pier body of the prefabricated pier, a vertical rotation cable is arranged at the upper position of the pier body of the prefabricated pier, the vertical rotation base is arranged on the top surface of the pedestal, and a transverse cap beam is arranged on the top of the prefabricated pier.

10. The fully assembled bridge "horizontal division and vertical rotation" rapid construction equipment according to claim 9 is characterized in that: The vertical rotation base is arranged on the top surface of the pedestal through embedded steel bars, the transverse cap beam is arranged on the horizontal assembly platform, and the horizontal assembly platform and the prefabricated bridge pier are both arranged on the ground.

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