Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cantilever positioning and mounting method for near-arch-foot section of hinge-free steel truss arch bridge
The invention relates to the technical field of bridge construction, in particular to a hinge-free steel truss arch bridge near-arch-foot section cantilever positioning and installing method which comprises the following steps that L0 is solidified on an actual construction site, and L0 is an arch foot chord member embedded section; actually measuring a translation error angle alpha 1 and a rotation error angle alpha 1 of the L0 relative to the original design line shape of the unhinged steel truss arch bridge; according to the translation error and the rotation error angle alpha 1, the line shape and the installation angle of the first-section cantilever unit are simulated and adjusted, and one end of the first-section cantilever unit is connected to L0; and S3, manufacturing the first section of cantilever unit according to the simulation adjustment result of the step S3, manufacturing the remaining cantilever units according to the original design, and sequentially installing the cantilever units to complete the cantilever positioning installation of the hinged steel truss arch bridge near-arch-foot section. By means of the method, the problems that according to an installation method of the hinge-free steel truss arch bridge in the prior art, the stability of the structure in the construction stage is not weakened, the rigidity of the structure is reduced, the swing displacement of the cantilever end under the live load effect is increased, and the construction efficiency is not affected are solved.
本发明涉及桥梁建设的技术领域，特别涉及一种无铰钢桁拱桥近拱脚节段悬臂定位安装方法，包含如下步骤：在实际施工现场固结L0，其中L0为拱脚弦杆预埋段；实际测量L0相较于无铰钢桁拱桥原始设计线形的平动误差和转动误差角度α1；根据平动误差和转动误差角度α1，模拟调整第Ⅰ段悬臂单元的线形与安装角度，其中第Ⅰ段悬臂单元一端连接于L0；根据步骤S3的模拟调整结果制造第Ⅰ段悬臂单元，根据原始设计制造剩余的悬臂单元，依次安装悬臂单元，完成无铰钢桁拱桥近拱脚节段悬臂定位安装。本方法，解决了现有技术存在的无铰钢桁拱桥的安装方法要不削弱结构在施工阶段的稳定性、降低结构的刚度和加大悬臂端在活载作用下的摆动位移，要不影响施工效率的问题。
Cantilever positioning and mounting method for near-arch-foot section of hinge-free steel truss arch bridge
The invention relates to the technical field of bridge construction, in particular to a hinge-free steel truss arch bridge near-arch-foot section cantilever positioning and installing method which comprises the following steps that L0 is solidified on an actual construction site, and L0 is an arch foot chord member embedded section; actually measuring a translation error angle alpha 1 and a rotation error angle alpha 1 of the L0 relative to the original design line shape of the unhinged steel truss arch bridge; according to the translation error and the rotation error angle alpha 1, the line shape and the installation angle of the first-section cantilever unit are simulated and adjusted, and one end of the first-section cantilever unit is connected to L0; and S3, manufacturing the first section of cantilever unit according to the simulation adjustment result of the step S3, manufacturing the remaining cantilever units according to the original design, and sequentially installing the cantilever units to complete the cantilever positioning installation of the hinged steel truss arch bridge near-arch-foot section. By means of the method, the problems that according to an installation method of the hinge-free steel truss arch bridge in the prior art, the stability of the structure in the construction stage is not weakened, the rigidity of the structure is reduced, the swing displacement of the cantilever end under the live load effect is increased, and the construction efficiency is not affected are solved.
本发明涉及桥梁建设的技术领域，特别涉及一种无铰钢桁拱桥近拱脚节段悬臂定位安装方法，包含如下步骤：在实际施工现场固结L0，其中L0为拱脚弦杆预埋段；实际测量L0相较于无铰钢桁拱桥原始设计线形的平动误差和转动误差角度α1；根据平动误差和转动误差角度α1，模拟调整第Ⅰ段悬臂单元的线形与安装角度，其中第Ⅰ段悬臂单元一端连接于L0；根据步骤S3的模拟调整结果制造第Ⅰ段悬臂单元，根据原始设计制造剩余的悬臂单元，依次安装悬臂单元，完成无铰钢桁拱桥近拱脚节段悬臂定位安装。本方法，解决了现有技术存在的无铰钢桁拱桥的安装方法要不削弱结构在施工阶段的稳定性、降低结构的刚度和加大悬臂端在活载作用下的摆动位移，要不影响施工效率的问题。
Cantilever positioning and mounting method for near-arch-foot section of hinge-free steel truss arch bridge
一种无铰钢桁拱桥近拱脚节段悬臂定位安装方法
LI SONGTAO (Autor:in) / WANG CONG (Autor:in) / SONG SUIDI (Autor:in) / ZHANG CHAO (Autor:in) / JI KONGDONG (Autor:in) / ZHENG MINGHUI (Autor:in) / CHEN XUEFENG (Autor:in) / LI GUANGCHUAN (Autor:in) / MAO JIACHUAN (Autor:in) / ZENG YONGPING (Autor:in)
15.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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