大跨径飞燕式异型拱桥稳定性分析  

Analysis on the stability of special-shaped large-span arch bridge with flying swallow type

作　　者：朱小林[1] 

机构地区：[1]山西省交通科学研究院,山西太原030006

出　　处：《山西建筑》2012年第26期210-210,246,共2页Shanxi Architecture

摘　　要：以长春伊通河大桥为工程背景,运用非线性稳定分析理论,针对大跨径飞燕式异型拱桥在不同荷载工况下的稳定性进行了分析,分析结果表明:该类桥型的面外刚度偏弱,且稳定拱外倾角、拱肋刚度、矢跨比对整体桥梁的稳定性有一定影响。Taking Yitong river bridge in Changehun as the engineering background, applying nonlinear stability analysis theory, the paper analy- zes the stability of special-shaped large-span arch bridge with flying swallow type under different loading eondition. The analysis results show that the weak bridge rigidity, external stable arch angle, rigidity of arch rib and rise-span ratio have certain impact upon the overall bridge stability.

关 键 词：大跨径 飞燕式异型拱桥 稳定性 拱肋刚度 矢跨比 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]