斜拉桥成桥状态的影响参数分析

以杭州湾跨海大桥南通航孔道斜拉桥为工程背景,采用对比分析的方法,定量分析了结构自重、临时荷载、结构刚度等因素对斜拉桥成桥状态的影响,结果表明主梁自重、施工临时荷载对桥的索力、主梁挠度,影响较大,其中临时荷载的影响尤为明显,而结构刚度的影响较小,斜拉索张拉力误差对主梁竖向累计位移和前端索力的影响较明显。

Influential parameters analysis of cable-stayed bridge forming bridge condition

Taking south airline hole cable-stayed spans of Hangzhou bay bridge as engineering background,using comparative analysis,it quantitatively analyzes impacts of the structural weight,temporary load,the structural stiffness and other factors influence on cable-stayed bridge forming bridge condition.The results show that the main beam weight and temporary construction load have a greater impact on the cable force of the bridge and the main beam deflection,therein to the impact from temporary load is specially obvious,while the impacts from structural stiffness is relatively smaller,and the impacts from cable tensile force errors on the cumulative vertical displacement of the main beam and front-end cable force is relatively obvious too.