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.
出处
《重庆交通学院学报》
CAS
2005年第1期5-8,24,共5页
Journal of Chongqing Jiaotong University
基金
国家自然科基金项目(59895410)资助
关键词
非线性
超大跨度
斜拉桥
使用阶段内力
nonlinearity
super-long span
cable-stayed bridges
internal force under service stage
