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为研究弹性模量、重度、索力和温度等影响因素、双塔联合及上下游张拉索力差等对斜拉桥受力性能、位移等的影响,结合甬江特大桥,利用通用的大型有限元软件,模拟斜拉桥各施工阶段和成桥状态下的各种工况并进行分析。分析结果表明:实际控制过程中,主要控制参数为斜拉索索力、主梁重量和温度,施工过程中要求双幅主梁保持施工步骤一致,同步对称张拉。
In order to study the influence of elastic modulus, gravity, cable force and temperature, twin tower combination and the difference of tensile force between upstream and downstream cables on the mechanical properties and displacement of cable-stayed bridge, combined with the Yongjiang Bridge, Finite element software to simulate the various construction stages of the cable-stayed bridge and the various working conditions under the condition of the bridge. The results show that in the actual control process, the main control parameters are the cable tension, the weight and temperature of the main girder, and the construction process requires that the two main girders maintain the same construction steps and synchronously symmetrical tension.