钢筋混凝土上承式拱桥稳定性分析

Stability analysis of reinforced concrete deck arch bridge

钢筋混凝土上承式拱桥结构的稳定是重点,历史上有过许多因桥梁失稳造成事故的例子,稳定问题是与强度问题有着同样同等重要的意义,本文以钢筋混凝土上承式拱桥-九洞天大桥为例通过Midas civil进行计算,主要考虑桥梁结构在自重与二期荷载作用下的稳定性分析,并且再考虑稳定的基础上,对桥梁结构的极限承载能力作分析,保证结构的安全可靠。

Stability of reinforced concrete deck arch bridge structure is the key point.There have been many accidents caused by bridge instability in history.Stability problem is equally important to strength problem.Taking reinforced concrete deck arch bridge-Jiudong Tianqiao as an example,this paper calculates through Midas civil,mainly considering the stability of bridge structure under dead weight and second-stage load.On the basis of stability analysis,the ultimate bearing capacity of bridge structure is analyzed to ensure the safety and reliability of the structure.