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A platform for research: civil engineering, architecture and urbanism
Concrete continuous beam bridge transformation construction method
The invention relates to a concrete continuous beam bridge transformation construction method. The method comprises the following steps: dismantling a bridge deck pavement layer; arranging temporary buttresses on the two sides of a pier, and arranging first pad structures on the temporary buttresses; assembling a steel truss girder on the deck; rotating the steel truss girder to be borne on a first dip padding structure; anchoring the steel truss girder to the concrete continuous girder bridge through an anti-overturning system; dismounting, namely mounting a hanging system at the position, corresponding to the box girder section of a midspan closure, of the steel truss girder, anchoring the hanging system to the box girder section, cutting the box girder section, and lowering the box girder section by using the hanging system; and dismantling the rest box girder sections according to an inverse sequence of finished bridge pouring by using the processes in the dismantling step and a double-cantilever dismantling process; arranging a third pad structure at the top of the pier; rotating the steel truss girder to be borne on the third pad structure; arranging a steel cross beam support at the top of the pier; and rotating the steel truss girder to be borne on the steel cross beam support. The method is short in period, small in construction support amount and small in environmental disturbance.
本申请涉及混凝土连续梁桥改造施工方法，包括如下步骤：拆除桥面铺装层；在桥墩两侧设置临时支墩，在临时支墩上布置第一抄垫结构；在桥面上拼装钢桁梁；将钢桁梁转至承载于第一抄垫结构上；通过抗倾覆系统，将钢桁梁锚固于混凝土连续梁桥上；拆除步骤：在钢桁梁对应于跨中合龙的箱梁节段位置处，安装吊挂系统，并将吊挂系统锚固于该箱梁节段，切割该箱梁节段，并用吊挂系统下放；采用拆除步骤的方式及双悬臂拆除法，按照成桥浇筑的逆顺序，拆除其余的箱梁节段；在桥墩顶部布置第三抄垫结构；将钢桁梁转至承载于第三抄垫结构上；在桥墩顶部布置钢横梁支座；将钢桁梁转至承载于钢横梁支座上。本申请周期短、施工支架量小、对环境扰动小。
Concrete continuous beam bridge transformation construction method
The invention relates to a concrete continuous beam bridge transformation construction method. The method comprises the following steps: dismantling a bridge deck pavement layer; arranging temporary buttresses on the two sides of a pier, and arranging first pad structures on the temporary buttresses; assembling a steel truss girder on the deck; rotating the steel truss girder to be borne on a first dip padding structure; anchoring the steel truss girder to the concrete continuous girder bridge through an anti-overturning system; dismounting, namely mounting a hanging system at the position, corresponding to the box girder section of a midspan closure, of the steel truss girder, anchoring the hanging system to the box girder section, cutting the box girder section, and lowering the box girder section by using the hanging system; and dismantling the rest box girder sections according to an inverse sequence of finished bridge pouring by using the processes in the dismantling step and a double-cantilever dismantling process; arranging a third pad structure at the top of the pier; rotating the steel truss girder to be borne on the third pad structure; arranging a steel cross beam support at the top of the pier; and rotating the steel truss girder to be borne on the steel cross beam support. The method is short in period, small in construction support amount and small in environmental disturbance.
本申请涉及混凝土连续梁桥改造施工方法，包括如下步骤：拆除桥面铺装层；在桥墩两侧设置临时支墩，在临时支墩上布置第一抄垫结构；在桥面上拼装钢桁梁；将钢桁梁转至承载于第一抄垫结构上；通过抗倾覆系统，将钢桁梁锚固于混凝土连续梁桥上；拆除步骤：在钢桁梁对应于跨中合龙的箱梁节段位置处，安装吊挂系统，并将吊挂系统锚固于该箱梁节段，切割该箱梁节段，并用吊挂系统下放；采用拆除步骤的方式及双悬臂拆除法，按照成桥浇筑的逆顺序，拆除其余的箱梁节段；在桥墩顶部布置第三抄垫结构；将钢桁梁转至承载于第三抄垫结构上；在桥墩顶部布置钢横梁支座；将钢桁梁转至承载于钢横梁支座上。本申请周期短、施工支架量小、对环境扰动小。
Concrete continuous beam bridge transformation construction method
一种混凝土连续梁桥改造施工方法
JIANG YONG (author) / LIU SHUGUANG (author) / CHEN CHENG (author) / WEI KUI (author) / FAN YUANWEI (author) / ZHANG WU (author) / YANG XIANQUAN (author) / LOU SONG (author) / JIANG HENG (author) / XIONG CHANGQING (author)
2020-07-03
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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