石拱桥永久性变形限值的探讨  

Study on Ultimate Value of Permanent Deformation of Stone Arch Bridge

作　　者：周科文[1] 陈斌 周建庭[1] 刘思孟[1] 梁雄[1] 祝小龙[1] 

机构地区：[1]重庆交通大学,重庆400074 [2]重庆交通旅游投资集团,重庆401147

出　　处：《重庆交通大学学报（自然科学版）》2007年第B10期8-10,共3页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：重庆市重大科技攻关项目(CSTC2005AA6010);交通部西部交通建设科技项目(200431878518)

摘　　要：通过结构计算软件Midas/Civil分析了不同跨径的空腹式石拱桥在控制截面的永久性下挠变形极限值,并在此基础上得出了25-65 m跨径的空腹式石拱桥的永久性变形容许下挠值计算公式,可为基层技术工程人员有效方便地评估桥梁的安全程度起到一定的借鉴作用.The ultimate value of permanent lower deflection deformation was analyzed under the control section of different span spandrel-braced arch bridges by the structure calculation software Midas/Civil,and the permanent deformation allowance calculation formula of lower deflection to spandrel-braced arch bridges of 25 m to 65 m span length was gained based on this foundation,which would facilitate basic engineers to assess bridge safety rate effectively and convenientely.

关 键 词：石拱桥 永久性变形 限值 有限元分析 

分 类 号：U444.7[建筑科学—桥梁与隧道工程]