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A platform for research: civil engineering, architecture and urbanism
Synchronously constructed hybrid beam cable-stayed bridge steel beam auxiliary span closure method
The invention relates to the technical field of bridge construction, in particular to a synchronous construction hybrid beam cable-stayed bridge steel beam auxiliary span closure method which comprises the following steps: erecting a first temporary buttress and a second temporary buttress; the erected auxiliary span steel beam sections are pushed section by section and supported by the first temporary buttresses until the steel-concrete combined section steel beam is located on the second temporary buttresses; the auxiliary span steel guide beam is dismantled until the steel-concrete combined section steel beam is exposed, a steel-concrete combined area is reserved to serve as an auxiliary span closure opening, residual area concrete at the occupied position of the auxiliary span steel guide beam is poured to form an anchor span concrete beam, and a main span steel beam and a tension stay cable are erected synchronously through a single cantilever; and the posture of the steel-concrete combined section steel beam is adjusted till the steel-concrete combined section steel beam is smoothly combined with the tail section anchor span concrete beam, concrete in the steel-concrete combined area is poured to form the steel-concrete combined section, and auxiliary span closure construction is completed. The problems that the closure precision of the auxiliary span of the hybrid beam cable-stayed bridge is low, the construction process is tedious and the construction period is long are solved.
本申请涉及桥梁施工技术领域，具体涉及一种同步施工的混合梁斜拉桥钢梁辅助跨合龙方法，包括以下步骤：架设第一临时支墩、第二临时支墩；逐段顶推已架设的辅助跨钢梁节段，并利用第一临时支墩承托，直至钢混结合段钢梁位于第二临时支墩上；拆除辅助跨钢导梁直至露出钢混结合段钢梁，预留钢混结合区域作为辅助跨合龙口，浇筑辅助跨钢导梁占位处的剩余区域混凝土以形成锚跨混凝土梁，并同步单悬臂架设主跨钢梁和张拉斜拉索；调整钢混结合段钢梁姿态，直至其与尾节锚跨混凝土梁结合平顺，浇筑钢混结合区域的混凝土以形成钢混结合段，完成辅助跨合龙施工。解决了混合梁斜拉桥辅助跨合龙精度低、施工过程繁琐且施工周期长的问题。
Synchronously constructed hybrid beam cable-stayed bridge steel beam auxiliary span closure method
The invention relates to the technical field of bridge construction, in particular to a synchronous construction hybrid beam cable-stayed bridge steel beam auxiliary span closure method which comprises the following steps: erecting a first temporary buttress and a second temporary buttress; the erected auxiliary span steel beam sections are pushed section by section and supported by the first temporary buttresses until the steel-concrete combined section steel beam is located on the second temporary buttresses; the auxiliary span steel guide beam is dismantled until the steel-concrete combined section steel beam is exposed, a steel-concrete combined area is reserved to serve as an auxiliary span closure opening, residual area concrete at the occupied position of the auxiliary span steel guide beam is poured to form an anchor span concrete beam, and a main span steel beam and a tension stay cable are erected synchronously through a single cantilever; and the posture of the steel-concrete combined section steel beam is adjusted till the steel-concrete combined section steel beam is smoothly combined with the tail section anchor span concrete beam, concrete in the steel-concrete combined area is poured to form the steel-concrete combined section, and auxiliary span closure construction is completed. The problems that the closure precision of the auxiliary span of the hybrid beam cable-stayed bridge is low, the construction process is tedious and the construction period is long are solved.
本申请涉及桥梁施工技术领域，具体涉及一种同步施工的混合梁斜拉桥钢梁辅助跨合龙方法，包括以下步骤：架设第一临时支墩、第二临时支墩；逐段顶推已架设的辅助跨钢梁节段，并利用第一临时支墩承托，直至钢混结合段钢梁位于第二临时支墩上；拆除辅助跨钢导梁直至露出钢混结合段钢梁，预留钢混结合区域作为辅助跨合龙口，浇筑辅助跨钢导梁占位处的剩余区域混凝土以形成锚跨混凝土梁，并同步单悬臂架设主跨钢梁和张拉斜拉索；调整钢混结合段钢梁姿态，直至其与尾节锚跨混凝土梁结合平顺，浇筑钢混结合区域的混凝土以形成钢混结合段，完成辅助跨合龙施工。解决了混合梁斜拉桥辅助跨合龙精度低、施工过程繁琐且施工周期长的问题。
Synchronously constructed hybrid beam cable-stayed bridge steel beam auxiliary span closure method
一种同步施工的混合梁斜拉桥钢梁辅助跨合龙方法
LI JIANGGANG (author) / SHI JIANHUA (author) / ZHANG JUSHENG (author) / NING BOWEI (author) / LI SHIWEN (author) / WANG FAN (author) / MEI SHUHUI (author) / DENG WEN (author)
2024-03-01
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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