【作者】 吕建根； 王连华； 周海兵； 赵跃宇；

【Author】 LV Jiangen,WANG Lianhua,HOU Haibing, ZHAO Yueyu, (College of Civil Engineering Hunan University, Hunan, Changsha 410082, China)

【机构】 湖南大学土木工程学院；

【摘要】 针对在建的某大跨度斜拉拱组合桥,考虑几何、材料非线性的影响,建立了大跨度斜拉拱组合桥的非线性稳定计算模型,进行了该桥的结构行为分析．并对该桥在运营状态下的稳定性和几何非线性进行了模拟计算,得出了各个运营状态下的稳定安全和非线性影响系数,结果表明:几何非线性对斜拉拱组合桥的内力影响较对普通系杆拱桥小。此研究结果对该种桥型的实际应用具有一定的指导意义。更多还原

【Abstract】 In view of the effects of geometric non-linearity as well as material non-linearity, the nonlinear mechanical model for the stability analysis of a certain cable-stayed arch bridge during operation is presented,and it is used to analyze the structural behavior of the bridge.The nonlinear stability and the geometric nonlinear influential factors of the bridge during operation are analyzed. The stable safety factor and the non-linearity influence coefficient under each operation condition is obtained.The results indicated that the geometry non-linearity is smaller than to the cable-stayed arch bridge internal force influence to the ordinary tie bar arch bridge influence .The study results are of certain guidance to the practical application of the type of bridge.更多还原