考虑平面外倾斜影响的石拱桥数值模拟  

Numerical Simulation of Stone Arch Bridge Considering the Influence of Out-of-plane Tilt

作　　者：白伟亮[1,2] 李悦[1,3] 谢齐 

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]中电投工程研究检测评定中心,北京100840 [3]北京工业大学城市与工程安全减灾教育部重点实验室,北京100124

出　　处：《北京工业大学学报》2016年第7期1045-1051,共7页Journal of Beijing University of Technology

基　　金：北京市属高等学校高层次人才引进与培养计划资助项目(CIT&TCD20150310);教育部"新世纪优秀人才支持计划"资助项目(NCET-12-0605)

摘　　要：为了研究平面外倾斜对石拱桥承载力影响,建立了石拱桥主拱圈及上部结构的三维有限元ANSYS模型,考虑主拱圈平面外倾斜,采用牛顿-拉普森法迭代算法计算桥面均布活荷载极限值,分析极限状态下主拱圈的受力及损伤状态,总结了主拱圈平面外倾斜对桥面承载能力的影响规律,为该类石拱桥的安全及损伤评估提供了理论依据.In order to study the influence of out-of-plane tilt on the bearing capacity of stone arch bridge, considering the influence of out-of-plane tilt, a 3-D finite element model of the main arch and superstructure of stone arch bridge was established by ANSYS. The ultimate value of uniform live load for bridge deck was calculated by Newton-Raphson Method. Simultaneously, the state of stress and damage of the main arch was analyzed in the limit state. The influence of out-of-plane tilt of the main arch on deck carrying capacity can provide a theoretical basis for safety and damage assessment of this kind of stone arch bridge.

关 键 词：石拱桥 承载力 主拱圈 平面外倾斜 有限元分析 

分 类 号：TU528[建筑科学—建筑技术科学]