摘要
根据建立的施工仿真分析模型,取合理成桥索力为初次迭代索力,按正装计算得到一个成桥状态,将该成桥状态与设计成桥状态比较,得到成桥状态下各控制参数与设计成桥状态下目标值的调整量,经线性优化模型得到各拉索新的张拉力,进入下一轮正装计算,直至收敛为止。针对某斜拉桥的结构特点和施工需要,并利用其主梁采用分节段支架搭设的受力特性,确定了该桥斜拉索的施工初始索力。
According to construction model, the finished state was obtained with forward-calculation by presuming the reasonable completed cable force compare it with ideal finished state, we can modify the controlling cable tensing forces to minimize the difference values between the result and the predetermined value of the reasonable finished bridge by the least squares method. Iterate the aforesaid procedure until the value was constringed. For the structural characteristic of the cablestayed bridge and construction, and make full use of characteristics the step-by-step stentering steel timber, we attain initial cable force of bridge.
出处
《国外建材科技》
2008年第3期76-78,共3页
Science and Technology of Overseas Building Materials
关键词
斜拉桥
分节段支架
施工初始索力
cable-stayed bridge
stentering steel timber
initial cable force
