A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Cable-stayed bridge construction monitoring method
The invention relates to the technical field of cable-stayed bridge construction, and provides a cable-stayed bridge construction monitoring method, which comprises the following steps of: calculating the structural displacement and stress state of each beam section under the action of self weight, prestress, concrete shrinkage creep and temperature change according to construction steps, and counting the time difference actual effect of the concrete shrinkage creep in each construction stage; the structure displacement and the stress state calculated in the previous construction stage are used as a foundation for determining the structure displacement and the stress state in the construction stage, and the time difference actual effect of each previous construction stage is used as a foundation of the time difference actual effect of the construction stage; and according to the calculated structure displacement and stress state of each construction stage, determining the formwork erection elevation of the bridge structure of each construction stage through backward analysis. According to the cable-stayed bridge construction monitoring method provided by the embodiment of the invention, the internal force and displacement of each stage can be prevented from deviating from the design value along with the change of the concrete pouring process, and the safety of the structure in the construction process is improved.
本发明涉及斜拉索桥施工技术领域，提供一种斜拉索桥施工监控方法，包括：按照施工步骤计算各梁段在自重、预应力、混凝土收缩徐变以及温度变化作用下的结构位移以及受力状态，并在各施工阶段计入混凝土收缩徐变的时差实效；将前一施工阶段计算出的结构位移和受力状态作为本施工阶段确定结构位移和受力状态的基础，并将以前各施工阶段的时差实效作为本施工阶段的时差实效的基础；根据计算出的各施工阶段的结构位移和受力状态，通过倒退分析确定各施工阶段的桥梁结构的立模标高。根据本发明实施例提供的斜拉索桥施工监控方法可以避免各阶段的内力和位移随着混凝土浇筑过程变化而偏离设计值，提高了施工过程中结构的安全性。
Cable-stayed bridge construction monitoring method
The invention relates to the technical field of cable-stayed bridge construction, and provides a cable-stayed bridge construction monitoring method, which comprises the following steps of: calculating the structural displacement and stress state of each beam section under the action of self weight, prestress, concrete shrinkage creep and temperature change according to construction steps, and counting the time difference actual effect of the concrete shrinkage creep in each construction stage; the structure displacement and the stress state calculated in the previous construction stage are used as a foundation for determining the structure displacement and the stress state in the construction stage, and the time difference actual effect of each previous construction stage is used as a foundation of the time difference actual effect of the construction stage; and according to the calculated structure displacement and stress state of each construction stage, determining the formwork erection elevation of the bridge structure of each construction stage through backward analysis. According to the cable-stayed bridge construction monitoring method provided by the embodiment of the invention, the internal force and displacement of each stage can be prevented from deviating from the design value along with the change of the concrete pouring process, and the safety of the structure in the construction process is improved.
本发明涉及斜拉索桥施工技术领域，提供一种斜拉索桥施工监控方法，包括：按照施工步骤计算各梁段在自重、预应力、混凝土收缩徐变以及温度变化作用下的结构位移以及受力状态，并在各施工阶段计入混凝土收缩徐变的时差实效；将前一施工阶段计算出的结构位移和受力状态作为本施工阶段确定结构位移和受力状态的基础，并将以前各施工阶段的时差实效作为本施工阶段的时差实效的基础；根据计算出的各施工阶段的结构位移和受力状态，通过倒退分析确定各施工阶段的桥梁结构的立模标高。根据本发明实施例提供的斜拉索桥施工监控方法可以避免各阶段的内力和位移随着混凝土浇筑过程变化而偏离设计值，提高了施工过程中结构的安全性。
Cable-stayed bridge construction monitoring method
斜拉索桥施工监控方法
WANG XIAOYAN (author) / ZHAO CHENGLONG (author) / DING CHEN (author) / HU ZONGMING (author) / ZOU DEYU (author) / HOU YUXIANG (author) / LIU WEIFENG (author) / XU ZITONG (author) / ZHAI SHUNPENG (author) / LI JIE (author)
2023-10-03
Patent
Electronic Resource
Chinese
CABLE-STAYED BRIDGE AND CABLE-STAYED BRIDGE CONSTRUCTION METHOD
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