摘要
浙江淳安南浦大桥为大跨径中承式钢管混凝土桁式拱桥,矢高60m,跨径308m,桥宽12m,宽跨比较小,该桥的面外稳定是桥梁安全性的关键。在水平荷载(包括风荷载和水平地震荷载)作用下,拱桥的面外稳定更引起设计者的重视。采用ANSYS有限元分析软件,考虑几何非线性,探讨了不同量值水平荷载对该桥施工最不利阶段和成桥阶段的面外稳定的影响,为此类桥梁的设计施工提供参考。
Located in Chunan County of Zhejiang Province, Nanpu Bridge is a concrete filled steel tube truss arch bridge with a long span of 308?m, width of 12?m, and height of 60?m. Due to the small ratio of width to span, out of plane stability of the arch is critical to the safety of the bridge. ANSYS software was used for the analysis of the stability of the bridge with consideration of horizontal loads, including wind and earthquake loads, as well as geometric nonlinearity of the structure. Effects of the horizontal loads on the out of plane sta?bility were explored in various stages of construction of the bridge, providing a reference for design and con?struction of similar projects.
出处
《中南公路工程》
北大核心
2004年第3期33-37,共5页
Central South Highway Engineering
关键词
钢管混凝土
拱桥
水平荷载
面处稳定
稳定系数
concrete filled steel tube truss
arch bridge
horizontal load
out of plane stability
stability factor
