CN-122013685-A - Integral installation method of steel bent cap

Abstract

The invention relates to the technical field of building construction, in particular to an integral installation method of a steel bent cap. The steel bent cap is processed into two symmetrical components and is respectively connected with the balancing weight and the pasting anti-collision object. And a guide steel rope is penetrated in the bolt holes of the uppermost row of the flanges of the two pieces of members. The two pieces of components are connected with the hanging point at the bottom of the bridge through the chain block. And lifting the two pieces of members through the central axis lifting point. And synchronously starting each chain block to lift the two pieces of members so that the two pieces of members are higher than the top surface of the pier stud. After the balancing weight and the anti-collision object are taken down, the two pieces of components are horizontally hung on the pier top through the web plate hanging points. The two members are aligned by the guide wire rope, and bolt holes arranged in the two sides of the flange plates of the two members penetrate into the long screw rods synchronously, and nuts of the long screw rods are screwed to enable the flange plates of the two members to be close. Bolts are symmetrically arranged in the other bolt holes, so that the flanges of the two members are folded. Taking out the guide steel cable and the long screw rod, injecting glue through the reserved hole, and removing each chain block after the glue is solidified.

Inventors

• XIAO CHENG
• WU GUICHAO
• HE MING
• Xiao dunsu
• YE JUAN
• CHEN YANXIN
• LIU JIABIN
• ZHANG SHENGLIN
• TAN JUNHUI
• YOU YILIN
• HUANG XINJIAN
• YE JIANRONG
• HU XIAOCHONG
• PENG YONGBO
• Zeng Shaoxi
• XIAO GUOWEI
• LIU XIN
• DONG FANG
• Li Zhengun

Assignees

• 广东省基础工程集团有限公司
• 广东华湾工程建设有限公司

Dates

Publication Date

20260512

Application Date

20260302

Claims (10)

1. 1. A method of integrally installing a steel capping beam, comprising: s1, a steel bent cap (1) is divided and processed into two symmetrical components (11) along the central axis of the beam surface; S2, respectively connecting preset balancing weights (2) on the outer sides of the two pieces of members (11), and pasting anti-collision objects on the inner sides of the two pieces of members (11); S3, symmetrically placing the two pieces of members (11) on two sides of the pier stud (3), and penetrating a guide steel cable (4) into the bolt holes in the uppermost row of the flange plates of the two pieces of members (11); S4, symmetrically connecting the two pieces of members (11) with preset hanging points of the bottom (6) of the bridge through eight chain blocks (5), and hanging the two pieces of members (11) to a preset height, wherein each preset hanging point is divided into four central axis hanging points (7) and four web hanging points (8); s5, synchronously lifting the two pieces of members (11) through the chain blocks (5) connected with the central axis lifting points (7) so that the two pieces of members (11) incline outwards; S6, synchronously starting eight chain blocks (5) to integrally lift the two pieces of members (11) so that the two pieces of members (11) are higher than the top surface of the pier column (3); s7, synchronously taking down the balancing weights (2) connected with the two pieces of members (11), and taking down the anti-collision object after the two pieces of members (11) are stabilized; S8, synchronously lifting the two pieces of members (11) through the chain blocks (5) connected with the web plate hanging points (8), so that the two pieces of members (11) are horizontal and hung on the pier tops; S9, symmetrically aligning bolt holes of the flanges of the two pieces of members (11) through a guide steel cable (4) penetrating through the bolt holes of the uppermost row of the flanges of the two pieces of members (11), penetrating long screws into the bolt holes of the two rows of the flanges of the two pieces of members (11) synchronously, and screwing nuts of the long screws to enable the flanges of the two pieces of members (11) to be close until the gap is smaller than the preset length; S10, symmetrically installing bolts (9) in the rest bolt holes of the flanges of the two pieces of members (11) so that the flanges of the two pieces of members (11) are folded; s11, taking out the guide steel cable and the long screw rod, and symmetrically installing bolts (9) in the bolt holes in the uppermost row and the bolt holes in the middle rows on two sides of the flange plates of the two pieces of members (11); S12, symmetrically and uniformly injecting glue through the reserved holes on the side surfaces of the two pieces of members (11), and dismantling each chain block (5) after the glue is solidified.
2. 2. The steel bent cap integral installation method according to claim 1, wherein in the step S4, each piece of member (11) is symmetrically provided with two central axis hanging points (6) and two web hanging points (7), and each hanging point arranged on the two pieces of member (11) corresponds to each preset hanging point at the bottom of the bridge in pairs, and the two corresponding hanging points are located on the same plumb line.
3. 3. The steel bent cap integral installation method according to claim 1, wherein the eight chain blocks (5) in S4 are identical in model number, and the total lifting weight of the eight chain blocks (5) is greater than twice the total weight of the two pieces of members (11) and the balancing weight (2).
4. 4. A steel bent cap integral installation method according to claim 1, wherein the weight of each balancing weight (2) in S2 is one quarter to one third of the weight of each piece member (11).
5. 5. The steel bent cap integral installation method according to claim 1, wherein in S2, preset balancing weights (2) are respectively connected to the outer sides of the two pieces of members (11), specifically comprising: The outsides of the two pieces of members (11) are detachably connected with preset balancing weights (2) through hanging rods respectively.
6. 6. The steel bent cap integral installation method according to claim 1, wherein two ends of the guide steel cable (4) in the step S3 are provided with locking catches for preventing the guide steel cable (4) from falling off during the lifting process of the steel bent cap (1).
7. 7. A steel bent cap integral installation method as claimed in claim 1, wherein the guide wire rope (4) in S3 is made of steel strands.
8. 8. The steel bent cap integral installation method of claim 1, wherein the long screw in S9 is made of a fine steel.
9. 9. The method of integrally installing a steel capping beam of claim 1 wherein the bump in S2 is a foam block.
10. 10. The method of integrally installing a steel capping beam of claim 1 wherein the bump in S2 is a rubber block.

Description

Integral installation method of steel bent cap Technical Field The specification relates to the technical field of building construction, in particular to a steel bent cap integral installation method. Background In the field of transverse anti-overturning reinforcement of a single pier stud overpass, how to improve the overall safety and stability of a structure is always a key problem in engineering practice. The steel bent cap reinforcement technology effectively increases the moment arm of the counter force of the support by newly adding the support on two sides of the existing bridge pier, thereby obviously improving the anti-overturning moment and the safety coefficient of the structure. Meanwhile, the technology can enable the steel cap beam to be tightly combined with the old pier, and ensure that the load is uniformly transferred to the old pier, so that the technology is widely applied to actual engineering. However, steel capping beam reinforcement techniques still present challenges in implementation. Firstly, the steel bent cap has a plurality of parts, the requirements on the machining precision and the field installation precision are extremely high, and any deviation can influence the reinforcing effect. Secondly, because the dead weight of the steel bent cap is large, and the construction space under the bridge is generally low, the conventional hoisting equipment is difficult to meet the operation requirement, and the construction cost is greatly increased by adopting a special crane. In order to reduce the weight of single hoisting, the common practice is to decompose the steel bent cap into a plurality of components, hoist the steel bent cap piece by piece and then set up an operation frame for manual repeated adjustment. The construction mode not only results in extremely low efficiency, but also makes construction quality difficult to guarantee due to the randomness of manual adjustment, and further influences the overall reinforcing effect and structural durability. For this reason, the present specification provides a steel bent cap integral installation method. Disclosure of Invention The present specification provides a method for integrally installing a steel capping beam, so as to partially solve the above-mentioned problems existing in the prior art. The technical scheme adopted in the specification is as follows: The specification provides a steel bent cap integral installation method, which comprises the following steps: S1, dividing a steel bent cap along a central axis of a beam surface into two symmetrical components; S2, respectively connecting preset balancing weights on the outer sides of the two pieces of members, and pasting anti-collision objects on the inner sides of the two pieces of members; S3, symmetrically placing the two pieces of members on two sides of the pier stud, and penetrating a guide steel cable into the bolt holes in the uppermost row of the flange plates of the two pieces of members; S4, symmetrically connecting the two pieces of members with preset hanging points at the bottom of the bridge through eight chain blocks, and hanging the two pieces of members to a preset height, wherein each preset hanging point is divided into four central axis hanging points and four web hanging points; s5, synchronously lifting the two pieces of members through the chain block connected with the central axis lifting points, so that the two pieces of members incline outwards; s6, synchronously starting eight chain blocks to integrally lift the two pieces of members, so that the two pieces of members are higher than the top surface of the pier stud; s7, synchronously taking down the balancing weights connected with the two pieces of members, and taking down the anti-collision object after the two pieces of members are stable; s8, synchronously lifting the two pieces of members through a chain block connected with each web plate lifting point, so that the two pieces of members are horizontally hung on the pier top; s9, symmetrically aligning the bolt holes of the flanges of the two pieces of members through a guide steel rope penetrating through the bolt holes of the uppermost row of the flanges of the two pieces of members, synchronously penetrating long screws into the bolt holes of the middle row of the two sides of the flanges of the two pieces of members, and screwing nuts of the long screws to enable the flanges of the two pieces of members to be close until the gap is smaller than the preset length; S10, symmetrically installing bolts in the rest bolt holes of the flanges of the two members so that the flanges of the two members are folded; s11, taking out the guide steel cable and the long screw rod, and symmetrically installing bolts in the bolt holes in the uppermost row and the bolt holes in the middle rows of the two sides of the flange plates of the two pieces of members; S12, symmetrically and uniformly injecting glue through the reserved holes on the side