A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method for variable cross-section cast-in-place beam to parallelly overpass existing bridge
The invention provides a construction method for a variable cross-section cast-in-place beam to parallelly overpass an existing bridge, and relates to the technical field of overpass construction of existing bridges. Performing three-dimensional modeling analysis on the existing bridge, and determining the stress load of the existing bridge; pouring a leveling layer on the top surface of the pier of the existing bridge; main I-shaped steel is installed on the top of the leveling layer in the transverse direction of the existing bridge; bailey pieces and a disc buckle support are sequentially installed on the main I-shaped steel. And the variable cross-section cast-in-place box girder is constructed on the disc buckle support. The load of the support is uniformly transmitted to the fulcrum solid section of the existing bridge through the leveling layer and then sequentially transmitted to the bent cap, the pier column and the pile foundation, the lower portion of the existing bridge and the foundation structure are fully utilized as the cast-in-place support foundation, the foundation is stable, stress is uniform and reasonable, the safety of the support and the existing bridge structure is facilitated, the support foundation treatment cost is saved, and the construction efficiency is improved. The construction procedures are reduced, the construction period is shortened, and the safety of erecting and disassembling the support can be greatly improved.
本发明提出了一种变截面现浇梁平行上跨既有桥梁施工方法，涉及既有桥梁上跨施工技术领域。对既有桥梁进行三维建模分析，确定既有桥梁的受力荷载；在既有桥梁的桥墩顶面浇筑调平层；在调平层顶部沿既有桥梁的横桥向安装主工字钢；在主工字钢上依次安装贝雷片和盘扣支架；在盘扣支架上施工变截面现浇箱梁。支架荷载均匀通过调平层传递至既有桥梁支点实心段，再将荷载依次传递至盖梁→墩柱→桩基，充分利用既有桥梁下部及基础结构作为现浇支架基础，基础稳定，受力均匀合理，有利于支架和既有桥结构安全，不仅节约支架地基处理费用，减少施工工序，加快施工周期，还能使支架搭拆安全性得到极大的提高。
Construction method for variable cross-section cast-in-place beam to parallelly overpass existing bridge
The invention provides a construction method for a variable cross-section cast-in-place beam to parallelly overpass an existing bridge, and relates to the technical field of overpass construction of existing bridges. Performing three-dimensional modeling analysis on the existing bridge, and determining the stress load of the existing bridge; pouring a leveling layer on the top surface of the pier of the existing bridge; main I-shaped steel is installed on the top of the leveling layer in the transverse direction of the existing bridge; bailey pieces and a disc buckle support are sequentially installed on the main I-shaped steel. And the variable cross-section cast-in-place box girder is constructed on the disc buckle support. The load of the support is uniformly transmitted to the fulcrum solid section of the existing bridge through the leveling layer and then sequentially transmitted to the bent cap, the pier column and the pile foundation, the lower portion of the existing bridge and the foundation structure are fully utilized as the cast-in-place support foundation, the foundation is stable, stress is uniform and reasonable, the safety of the support and the existing bridge structure is facilitated, the support foundation treatment cost is saved, and the construction efficiency is improved. The construction procedures are reduced, the construction period is shortened, and the safety of erecting and disassembling the support can be greatly improved.
本发明提出了一种变截面现浇梁平行上跨既有桥梁施工方法，涉及既有桥梁上跨施工技术领域。对既有桥梁进行三维建模分析，确定既有桥梁的受力荷载；在既有桥梁的桥墩顶面浇筑调平层；在调平层顶部沿既有桥梁的横桥向安装主工字钢；在主工字钢上依次安装贝雷片和盘扣支架；在盘扣支架上施工变截面现浇箱梁。支架荷载均匀通过调平层传递至既有桥梁支点实心段，再将荷载依次传递至盖梁→墩柱→桩基，充分利用既有桥梁下部及基础结构作为现浇支架基础，基础稳定，受力均匀合理，有利于支架和既有桥结构安全，不仅节约支架地基处理费用，减少施工工序，加快施工周期，还能使支架搭拆安全性得到极大的提高。
Construction method for variable cross-section cast-in-place beam to parallelly overpass existing bridge
一种变截面现浇梁平行上跨既有桥梁施工方法
LI GUANYANG (author) / MENG YUAN (author) / LIU JIAHAO (author) / LIN LIANQI (author) / LIU HAO (author) / LIN SHIPEI (author)
2023-02-03
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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