作　　者： ; ; ; ;

机构地区： 同济大学土木工程学院桥梁工程系

出　　处： 《重庆交通学院学报》 2005年第1期5-8,24,共5页

摘　　要： 笔者研究了非线性因素对超大跨度斜拉桥使用阶段内力的影响,分析中同时考虑了拉索垂度效应、P-Δ效应和大位移效应的影响.以一座主跨超千米的斜拉桥为例,给出了各控制截面内力的非线性影响系数,并提出了减小超大跨度斜拉桥非线性影响的措施. In this paper influence of structural nonlinearities on internal force of super-long span Cable-Stayed Bridge under service stage is studied. The cable sag effect, the beam-column effect and the large displacement effect are taken into account in the study. Based on the study of a cable-stayed bridge with a main span of more than 1000-meter-long, the nolinear influence factors of internal force at controlling sections are evaluated. Finally, the measures to reduce the influence of nonlinearities are presented.

关 键 词： 非线性 超大跨度 斜拉桥 使用阶段内力

领　　域： [建筑科学] [交通运输工程]