椭圆形钢桁架拱桥结构材料非线性计算研究  

Study on Nonlinear Calculation of Structural Materials of Elliptical SteelTruss Arch Bridge

作　　者：朱颖 范军琳[2] 李文文 ZHU Ying;FAN Jun-lin;LI Wen-wen(Nanchang Railway Survey and Design Institute Co.,Ltd.;China Railway Shanghai Design Institute Group Corporation Limited)

机构地区：[1]南昌铁路勘测设计院有限责任公司 [2]中铁上海设计院集团有限公司

出　　处：《智能建筑与智慧城市》2023年第8期30-32,共3页Intelligent Building & Smart City

摘　　要：文章以大跨度单承载面下承式椭圆形钢桁架拱桥成桥状态为研究对象,采用ANSYS建立有限元模型,进行了考虑材料非线性的稳定性分析,主要分析了恒载作用、恒载+全桥车道荷载作用下以及考虑初始缺陷影响的稳定性分析,计算得到对应荷载作用下的稳定安全系数。Taking the completed state of long-span oval steel truss arch bridge with single bearing surface as the research object,the finite element model is established by ANSYS,and the stability analysis considering material nonlinearity is carried out.The stability analysis under the action of dead load and dead load+full bridge lane load and the consideration of the influence of initial defects is mainly analyzed,and the stability safety factor under corresponding load is calculated.

关 键 词：下承式拱桥 非线性 有限元 稳定性 

分 类 号：U443[建筑科学—桥梁与隧道工程]