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本文以某主跨三跨钢筋混凝土系杆拱桥为研究对象,采用影响矩阵法对其吊杆张拉控制力进行了研究,同时利用有限元软件MIADS/civil建立空间分析计算模型,得到各施工阶段的优化张拉吊杆力,与原设计进行了比较优化。主要研究了各吊杆力的相互影响和相互耦合下,如何通过该方法计算出施工阶段需要张拉的吊杆力值,实现一次性张拉到位,为同类型桥梁施工提供借鉴。
In this paper, a main span of three-span reinforced concrete tied arch bridge is taken as the research object, and the influence matrix method is used to study the control force of the boom tension. At the same time, the finite element software MIADS / civil is used to establish the spatial analysis and calculation model, The optimization of the tension rod, compared with the original design has been optimized. The main research is the mutual influence and mutual coupling of each boom force. How to calculate the value of the boom boom that needs to be tensioned during the construction stage and achieve a one-time tension in order to provide reference for the construction of the same type of bridge.