中文摘要：

为了解各结构参数偏差对自锚式悬索桥吊索目标索力的影响,以吉林市雾凇大桥（预应力混凝土自锚式悬索桥）为例,采用有限元数值分析方法,分析在控制索力和控制索长2种方法下,桥塔和主梁抗弯刚度、体系温度、主缆和吊索抗拉刚度、主梁自重、中跨和边跨主缆长度参数偏差对吊索目标索力的影响,并进行实际工程分析。结果表明：主梁自重和边跨主缆长度对吊索目标索力的影响显著,而除主缆抗拉刚度和中跨主缆长度对吊索目标索力有一定的影响外,其余各结构参数偏差对吊索目标索力均影响甚微;在相同参数偏差影响下,各吊索索力在2种控制方法下的总体偏差量基本相同;控制索长法获得的吊索目标索力值相对均匀,对脱架后的主梁受力有利,而控制索力法能够进行结构参数识别,对制定吊索的后续调整方案有利。

英文摘要：

To understand the influences of the deviations of various structural parameters on the suspender target cable forces of self-anchored suspension bridge, the Wusong Bridge （a pres-tressed concrete self-anchored suspension bridge） in Jilin City was taken as an example, the influences of the deviations of the parameters, such as the bending stiffness of the towers and main girder, system temperatures, tensile stiffness of the main cables and suspenders, self weight of the main girder and main cable length of the central and side spans, on the suspender target cable forces under the two methods of controlling the cable forces and controlling the cable length were analyzed by the finite element numerical analysis method and the influences of such kind on the practical project were analyzed as well. The results of the analysis indicate that the influences of the self weight of the main girder and the main cable length of the side span on the target cable forces are significant. With the exception that the tensile stiffness of the main cables and the main cable length of the central span have certain influences on the target cable forces, the influences of the deviations of the rest of the structural parameters are slight. Influenced by the deviations of the same structural parameters, the general deviation amounts of the different suspender cable forces under the two control methods are basically identical. The target cable force values obtained by the method of controlling the cable length are relatively uniform and are beneficial to the force conditions of the main girder after the scaffoldings are removed. The method of controlling the cable forces can identify the structural parameters and is beneficial to the formulation of the subsequent adjustment scheme for the suspenders.