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A platform for research: civil engineering, architecture and urbanism
Method for erecting multi-span continuous steel truss girder bridge segments constructed by public rail
The invention discloses a highway-rail co-construction multi-span continuous steel truss girder bridge segment erection method, which is characterized in that a trestle, a temporary buttress, a crawler crane and a full-slewing crane assembly platform are sequentially arranged, two full-slewing cranes are respectively assembled and arranged on a large-mileage side and a small-mileage side, and a construction scheme of temporary buttress auxiliary half cantilever method installation is adopted. Four temporary buttresses are arranged between two adjacent main piers of an approach bridge section on one side in advance, one temporary buttress is arranged between the other main piers, then a crawler crane on a trestle bridge is used for installing four inter-section steel truss girders on the main piers and the four temporary buttresses, upper chords of the main piers and the four inter-section steel truss girders serve as a starting platform for suspended assembly, then two full-rotation girder erecting cranes are assembled on the starting platform, and the main piers and the four inter-section steel truss girders are arranged on the starting platform. And the other inter-section steel beams are symmetrically installed on the small mileage side and the large mileage side correspondingly. Steel truss girder cantilever assembly is adopted, multi-span steel truss girder cantilever assembly and large-span steel truss girder synchronous beam jacking and falling control are achieved, a large number of assembly supports do not need to be erected, only one set of temporary buttresses are needed, and the construction efficiency is improved.
本发明公开了一种公轨共建多跨连续钢桁梁桥节段架设方法，依次布置栈桥、临时支墩、履带吊、全回转吊机拼装平台，其中在大里程侧和小里程侧分别拼装布置两台全回转吊机，其采用临时支墩辅助半悬臂法安装的施工方案，预先在一侧引桥段的两个相邻主墩间设置四个临时支墩，在其余主墩之间设置一个临时支墩，再用栈桥上的履带吊安装该主墩与四个临时支墩上4个节间钢桁梁，其上弦杆作为悬拼的起步平台，然后在起步平台上拼装2台全回转架梁吊机，分别向小里程侧和大里程侧对称安装其余节间钢梁。本发明采用钢桁粱悬臂拼装，实现了多跨钢桁梁悬臂拼装，大跨度钢桁梁同步顶落梁控制，无需搭设大量拼装支架，仅需一组临时支墩即可，提高了施工效率。
Method for erecting multi-span continuous steel truss girder bridge segments constructed by public rail
The invention discloses a highway-rail co-construction multi-span continuous steel truss girder bridge segment erection method, which is characterized in that a trestle, a temporary buttress, a crawler crane and a full-slewing crane assembly platform are sequentially arranged, two full-slewing cranes are respectively assembled and arranged on a large-mileage side and a small-mileage side, and a construction scheme of temporary buttress auxiliary half cantilever method installation is adopted. Four temporary buttresses are arranged between two adjacent main piers of an approach bridge section on one side in advance, one temporary buttress is arranged between the other main piers, then a crawler crane on a trestle bridge is used for installing four inter-section steel truss girders on the main piers and the four temporary buttresses, upper chords of the main piers and the four inter-section steel truss girders serve as a starting platform for suspended assembly, then two full-rotation girder erecting cranes are assembled on the starting platform, and the main piers and the four inter-section steel truss girders are arranged on the starting platform. And the other inter-section steel beams are symmetrically installed on the small mileage side and the large mileage side correspondingly. Steel truss girder cantilever assembly is adopted, multi-span steel truss girder cantilever assembly and large-span steel truss girder synchronous beam jacking and falling control are achieved, a large number of assembly supports do not need to be erected, only one set of temporary buttresses are needed, and the construction efficiency is improved.
本发明公开了一种公轨共建多跨连续钢桁梁桥节段架设方法，依次布置栈桥、临时支墩、履带吊、全回转吊机拼装平台，其中在大里程侧和小里程侧分别拼装布置两台全回转吊机，其采用临时支墩辅助半悬臂法安装的施工方案，预先在一侧引桥段的两个相邻主墩间设置四个临时支墩，在其余主墩之间设置一个临时支墩，再用栈桥上的履带吊安装该主墩与四个临时支墩上4个节间钢桁梁，其上弦杆作为悬拼的起步平台，然后在起步平台上拼装2台全回转架梁吊机，分别向小里程侧和大里程侧对称安装其余节间钢梁。本发明采用钢桁粱悬臂拼装，实现了多跨钢桁梁悬臂拼装，大跨度钢桁梁同步顶落梁控制，无需搭设大量拼装支架，仅需一组临时支墩即可，提高了施工效率。
Method for erecting multi-span continuous steel truss girder bridge segments constructed by public rail
一种公轨共建多跨连续钢桁梁桥节段架设方法
MA JINGXIAO (author) / LIU SHEN (author) / KONG DECHAO (author) / LI JIUCHENG (author) / LI XIAOSONG (author) / SUN ZE (author) / LIU DAN (author) / LIU SHIRU (author) / DING HAOLIN (author) / ZHANG BOYANG (author)
2023-10-17
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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