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通过国内数座大型桥梁的施工塌陷事故及原因分析,提出对大型桥梁施工过程中的力学计算应考虑的主要问题:施工阶段力学计算的不确定性、结构体系转换、准确选定荷载组合并分析结构内力和局部应力、桥梁结构计算模型修正技术、应用先进的可视化技术对桥梁施工状态进行仿真分析和演示,以供同行在设计、施工及监控中借鉴,从而避免施工事故的发生。
Based on the analysis of the construction collapse accident and the reasons of several large bridges in China, the main problems that should be considered in the mechanical calculation of the large bridge during construction are put forward: the uncertainty of mechanics calculation in construction stage, the transformation of structural system, the accurate selection of load combination and analysis Structural internal force and local stress, bridge structure calculation model correction technology, the application of advanced visualization technology to simulate the bridge construction status and demonstration for colleagues in the design, construction and monitoring learn from, to avoid the occurrence of construction accidents.