钢管混凝土拱梁组合桥拱脚构造设计及应力计算分析  

Design and Stress Analysis of Arch Foot in CFST Arch-Beam Composite Bridge

作　　者：程建旗 沈侠伟 鲁思宁 Cheng Jianqi;Shen Xiawei;Lu Sining(Zhejiang Institute of Communications Co.,Ltd.,Hangz hou 310006,China)

机构地区：[1]浙江数智交院科技股份有限公司,浙江杭州310006

出　　处：《市政技术》2023年第12期34-39,共6页Journal of Municipal Technology

摘　　要：浙江省杭州市320国道大桥为单跨161 m钢管混凝土拱梁组合桥,详细介绍了该桥拱脚构造设计特点、施工临时铰构造和拱脚混凝土防裂措施,采用ANSYS软件建立了拱脚实体有限元模型进行局部应力计算分析。分析结果表明,拱脚主拉应力、主压应力基本满足规范要求,局部应力集中区域超出了规范限值,根据应力分析结果对拱脚进行了优化设计,分析成果可为同类桥梁设计提供参考。No.320 National Highway Bridge in Hangzhou,Zhejiang Province is a concrete flled steel tubular(CFST)arch-beam composite bridge with a single span of 16l m.the design features of arch foot,temporary hinge structure for construction,and crack prevention measures for arch foot concrete were introduced in detail.Then a solid element finite element model of the arch foot was established by ANSYS software to analyze the local stress.The results show that the principal tensile stress and principal compressive stress of the arch foot basically meet the specification requirements.And local stress concentration area exceeds the limit.The design of arch foot is optimized based on stress analysis results.The analysis results can provide reference for the design of similar bridges.

关 键 词：钢管混凝土拱桥 拱梁组合结构 拱脚构造设计 应力计算分析 

分 类 号：U448.52[建筑科学—桥梁与隧道工程]