大跨悬索桥非线性随机静力分析
注意:本论文已在《大连理工大学学报》2004,44(3):421-424发表
使用者请注明论文出处
(EI已经收录本文)
石磊 ,刘春城,张哲,杜蓬娟
(大连理工大学桥梁研究所, 辽宁大连,116024)
摘要:大跨度悬索桥结构具有显著的几何非线性行为,且存在材料特性、几何尺寸的随机性。先对缆索采用较小抗弯刚度参数的梁单元,对悬索桥进行确定性的几何非线性分析,然后采用响应面法进行非线性随机静力分析;最后针对一座大跨悬索桥,计算了在竖向活载作用下材料、几何尺寸的随机性对主梁跨中位移的影响。结果表明,结构随机性的影响十分明显。
关键词: 悬索桥 响应面法 几何非线性 随机性
中图分类号:U448.27 文献标识码:A
Nonlinear stochastic static
analysis of long span suspension bridge
SHI Lei LIU
Chun-Cheng ZHANG Zhe DU Peng-Juan
(Department of civil engineering, Dalian university of technology ,Dalian
116024)
Abstract: Geometrical nonlinear behaviors are very significant
in long span suspension bridges, and the uncertainties of material, physical
dimension etc greatly influence the structural response of suspension
bridge. Beam element with small EI is used for the certain analysis of
suspension bridge. Based on the Response Surface approach, the non-linearity
of suspension bridge is researched in this paper. Finally, the mid-span
deflection of a long span suspension bridge under vertical live load is
analyzed when the elastic module of cable and hangers are assumed to be
random correlated variables. Numerical results show that the randomness
has a significant effect on the mid-span deflection.
Key words: Suspension bridge; Response Surface approach;
Geometric non-linearity; Random
1、浏览PDF格式全文需要使用软件--Abode Acrobat(由于软件较大并常见,我站不提供下载)
2、下载论文全文请点击鼠标右键“另存为”或使用网络蚂蚁下载(25KB)
本站收录的本文作者的其他论文:
1、压弯耦合效应下自锚式悬索桥自由振动研究
2、两级模糊优选模型及非结构性模糊决策理论在桥梁方案比选中的应用
3、延吉市布尔哈通河局子街自锚式混凝土悬索桥设计
4、混凝土自锚式悬索桥结构内力分析
5、自锚式悬索桥的发展综述 更多相关论文请点击本站的<<<站内全文搜索>>>查找 |