箱梁顶板开洞引起应力集中的对比分析  

Comparative Analysis for Stress Concentration Caused by Opening on Top Plates of Box Girders

作　　者：张锋[1] 徐建[2] 

机构地区：[1]淮海工学院土木工程学院,江苏连云港222005 [2]江苏省交通科学研究院股份有限公司桥梁结构工程研究所,南京211112

出　　处：《公路交通技术》2012年第1期48-53,共6页Technology of Highway and Transport

摘　　要：以宁连高速公路淮安大桥为例,研究分析带孔工作的板单元有效宽度应力集中分布情况。运用有限元软件实体模拟并对比分析复杂应力状态下在箱梁顶板开洞其周边单元主拉应力的变化,对开凿洞口后的结构进行应力验算,并给出处理建议。Based on Huai＇an Bridge on Nanjing-Lianyungang Expressway as an example,this paper studies and analyzes centralized distribution of effective width of plate units in operation with openings.The paper simulates and comparatively analyzes changes of main tensile stress of peripheral units of openings on top plates of box girders under complicated stress states by means of finite element software entity,carries out check computation for structures after opening and proposes suggestions of treatment.

关 键 词：复杂应力状态 顶板 开洞 应力集中 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]