自锚式吊拉组合体系桥的非线性影响分析  

Nonlinear Analysis of Self-anchored Cable-stayed Suspension Bridge

作　　者：张征[1] 黄才良[1] 张哲[1] 王会利[1] 

机构地区：[1]大连理工大学桥梁研究所,大连116023

出　　处：《武汉理工大学学报（交通科学与工程版）》2009年第6期1056-1059,1115,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金项目(批准号:50708012);交通部西部交通建设科技项目(批准号:200631882350)资助

摘　　要：基于有限位移理论,针对自锚式吊拉组合体系桥的受力特点,全面考虑缆索垂度效应、大位移效应、初始内力效应、梁柱效应、混凝土收缩徐变和预应力损失等因素对自锚式吊拉组合体系桥的非线性影响,给出适于自锚式吊拉组合体系桥非线性分析的有限元方法.对一座主跨400 m的自锚式吊拉组合体系桥进行分析,得出关于自锚式吊拉组合体系桥力学性能的一般结论.Based on the finite displacement theory and considering mechanical properties of self-anchored cable-stayed suspension bridge, the nonlinear factors, including sag of cable, large displacement, initial internal force, axial forces-bending moment interaction, concrete shrinkage and creep and loss of prestress, are fully considered, and the finite element method suitable for nonlinear analysis of self-anchored suspension bridges is presented in this paper. Through detailed analysis of aself-anchored cable-stayed suspension bridge with span of 400 m by using the finite displacement theory, a series of conclusions about self-anchored cable-stayed suspension bridge mechanical properties are drawn.

关 键 词：自锚式吊拉组合体系桥 非线性分析 有限位移理论 力学性能 

分 类 号：U448[建筑科学—桥梁与隧道工程]