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A platform for research: civil engineering, architecture and urbanism
Continuous steel truss web-plate truss double-layer combined swivel bridge stress conversion method
The invention discloses a stress conversion method for a continuous steel truss web-plate truss double-layer combined swivel bridge, which comprises the following steps of: dismantling a bracket after a rib plate type prestressed concrete beam structure is completely poured and tensioned, and dismantling temporary buttresses from a main pier to two ends in a symmetrical manner at intervals; reserving the outermost row of temporary buttresses, and removing the temporary buttresses after the temporary steel supports are mounted; and finally, pouring a main beam abutment pier bearing padstone, and mounting a support. The main beam is supported on the support to complete stress conversion; by the adoption of the construction scheme, the outermost row of temporary buttresses of the swivel bridge are reserved, and the temporary steel supports are installed and then removed, so that before the outermost row of temporary buttresses of the swivel bridge are removed, the structural state of the swivel bridge in the three-pier two-span supporting state in the using state meets the design requirement; and in addition, the longitudinal anti-overturning stability of the long cantilever structure in the dismantling process of the outermost row of temporary buttresses and the rotation construction process is greatly improved.
本发明公开一种连续钢桁腹‑板桁双层组合转体桥梁受力转换方法，在肋板式预应力混凝土梁结构全部浇筑及张拉完成后拆除支架，再拆除临时支墩时由主墩向两端方向按照隔一拆一、对称方式拆除，并保留最外边一排临时支墩待安装好临时钢支撑之后再拆除；最后浇筑主梁边墩支承垫石、安装支座；主梁支承在支座上，完成受力转换；使用本发明施工方案，转体桥梁保留最外边一排临时支墩待安装好临时钢支撑之后再拆除，使得转体桥梁在拆除最外边一排临时支墩前先有效检验了转体桥梁处于使用状态的三墩两跨支承状态时的结构状态符合设计要求，且大幅增强在拆除最外边一排临时支墩及转体施工过程中长悬臂结构的纵向抗倾覆稳定性。
Continuous steel truss web-plate truss double-layer combined swivel bridge stress conversion method
The invention discloses a stress conversion method for a continuous steel truss web-plate truss double-layer combined swivel bridge, which comprises the following steps of: dismantling a bracket after a rib plate type prestressed concrete beam structure is completely poured and tensioned, and dismantling temporary buttresses from a main pier to two ends in a symmetrical manner at intervals; reserving the outermost row of temporary buttresses, and removing the temporary buttresses after the temporary steel supports are mounted; and finally, pouring a main beam abutment pier bearing padstone, and mounting a support. The main beam is supported on the support to complete stress conversion; by the adoption of the construction scheme, the outermost row of temporary buttresses of the swivel bridge are reserved, and the temporary steel supports are installed and then removed, so that before the outermost row of temporary buttresses of the swivel bridge are removed, the structural state of the swivel bridge in the three-pier two-span supporting state in the using state meets the design requirement; and in addition, the longitudinal anti-overturning stability of the long cantilever structure in the dismantling process of the outermost row of temporary buttresses and the rotation construction process is greatly improved.
本发明公开一种连续钢桁腹‑板桁双层组合转体桥梁受力转换方法，在肋板式预应力混凝土梁结构全部浇筑及张拉完成后拆除支架，再拆除临时支墩时由主墩向两端方向按照隔一拆一、对称方式拆除，并保留最外边一排临时支墩待安装好临时钢支撑之后再拆除；最后浇筑主梁边墩支承垫石、安装支座；主梁支承在支座上，完成受力转换；使用本发明施工方案，转体桥梁保留最外边一排临时支墩待安装好临时钢支撑之后再拆除，使得转体桥梁在拆除最外边一排临时支墩前先有效检验了转体桥梁处于使用状态的三墩两跨支承状态时的结构状态符合设计要求，且大幅增强在拆除最外边一排临时支墩及转体施工过程中长悬臂结构的纵向抗倾覆稳定性。
Continuous steel truss web-plate truss double-layer combined swivel bridge stress conversion method
一种连续钢桁腹-板桁双层组合转体桥梁受力转换方法
ZHU JUNFENG (author) / PENG JIANGANG (author) / WANG YONG (author) / YANG XUEZHEN (author) / CHEN HUI (author) / ZHAO SHIJIE (author) / GUO PENG (author) / FENG CHAO (author) / ZHANG YU (author) / HOU MAN (author)
2023-07-04
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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