波形钢腹板PC组合箱梁桥悬臂施工阶段受力及稳定性分析

Analysis on Stress and Stability of PC Composite Box Girder Bridge with Corrugated Steel Webs during Cantilever Construction

为研究波形钢腹板PC组合箱梁桥在悬臂施工过程中的受力及稳定性,以某跨径组合为(65+98+65)m的三跨单箱双室波形钢腹板PC组合箱梁桥为工程背景,采用MidasCivil有限元软件建立全桥模型,仿真模拟其悬臂施工过程,对其关键施工阶段结构进行受力分析和稳定性验算。结果表明:桥梁结构在各种施工阶段中,结构能很好地满足相关规范、设计和施工的要求。

In order to study the stress and stability of PC composite box girder bridge with corrugated steel webs during cantilever construction,a three-span single-box double-chamber corrugated steel webs PC composite box girder bridge with(65+98+65)m span combination was used as the engineering background.The whole bridge model is established by Midas Civil finite element software.The cantilever construction process is simulated and simulated,and the force analysis and stability check calculation are carried out for the key construction stage structure.The results show that the bridge structure can meet the requirements of relevant specifications,design and construction in various construction stages.