蝴蝶型拱桥稳定性参数分析  

Parameter analysis on the stability of butterfly shape arch bridge

作　　者：彭桂瀚[1,2] 高伟国[1] 吴庆雄[1,2] 

机构地区：[1]福州大学土木工程学院,福建福州350116 [2]可持续与创新桥梁福建省高校工程研究中心,福建福州350116

出　　处：《福州大学学报（自然科学版）》2017年第4期512-516,共5页Journal of Fuzhou University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51178119);福州大学科技发展基金资助项目(2014-XQ-32)

摘　　要：建立实桥有限元模型,研究蝴蝶拱桥稳定性能,对不同荷载作用、矢跨比、主拱倾角、拱肋连杆位置及构件刚度等参数进行分析.分析结果表明:选择合理主拱矢跨比与外倾角可使蝴蝶拱获得更优稳定性;跨中处肋间连杆对稳定性影响大;构件刚度对结构稳定的影响度依次为主拱肋、肋间连杆及副拱肋.Based on the finite element model of real bridge, the stability of butterfly shape arch bridge is analyzed using the parameters including different loads, rise to span ratios, inclined angles and link displacements. The results show the optimal inclined angle and rise to span ratio would be selected to obtain the best stability of the structure. The link between main arch rib and vise arch rib located at the mid-span has most influence on the stability, and the stiffness of the main arch rib is recognized as a critical element for increasing the stability of the bridge.

关 键 词：蝴蝶型拱桥 结构稳定性 参数分析 有限元 

分 类 号：U443[建筑科学—桥梁与隧道工程]