混凝土自锚式悬索桥静力非线性稳定分析  

Static Nonlinearity Stability Analysis for Concrete Self-anchored Suspension Bridge

作　　者：刘春城[1,2] 郑传杰[1] 刘向阳[1] 

机构地区：[1]东北电力大学建筑工程学院,吉林132012 [2]大连理工大学土木水利学院,大连116023

出　　处：《武汉理工大学学报（交通科学与工程版）》2010年第3期558-560,599,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：交通部西部科技项目(批准号:200631882350);吉林省教育厅"十一五"科技发展计划项目(批准号:200627)资助

摘　　要：介绍了同时考虑几何非线性和材料非线性的悬索桥非线性稳定分析方法,对国内某大跨混凝土自锚式悬索桥稳定性进行分析,讨论几何非线性和材料非线性对结构稳定性的影响,并研究混凝土收缩徐变、主梁配筋率以及不同加载工况等因素对受力悬索桥极限承载力的影响.分析表明,对于中等及以上跨度自锚式悬索桥,只有充分并合理考虑材料非线性才能对结构的稳定做出正确科学的评估.The paper introduced nonlinear stability analysis method for suspension bridge simultaneously considering both geometry nonlinearity and material nonlinearity,and basing on a domestic concrete self-anchored suspension bridge a stability analysis was made.The paper discusses the effect that geometry nonlinearity and material nonlinearity behaviors to structure stability.Some other factors taking concrete shrink、bar ratio and different load cases for instance are also included.Analysis results indicate that for middle-span self-anchored suspension bridge a scientific evaluation to structure stability can be made only if a sufficient and reasonable considering of material nonlinearity.

关 键 词：自锚式悬索桥 稳定分析 几何非线性 材料非线性 收缩 徐变 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]