高烈度地区轨道交通大跨度连续梁设计

文章通过对高烈度地区西安地铁5号线二期(49.264+80+50)m曲线段双线预应力混凝土连续箱梁的总体设计、构造尺寸进行介绍,为降低地震响应的影响采用摩擦摆间隔震支座,给出建议摩擦系数及本桥支座相关参数,并采用ASCB模型进行静力分析计算、Midas模型进行地震动力分析计算。针对轨道交通在景观区域的设置给出了建议性的设计原则,对类似工程设计具有一定的参考借鉴意义。

This paper introduces the overall design and structural size of the double-line prestressed concrete continuous box girder of Xi＇an Metro Line 5 in the second phase of （49.264＋80＋50＋50）m curve section in high intensity area. In order to reduce the influence of earthquake response, friction pendulum spacer bearing is adopted. The proposed friction coefficient and the relevant parameters of the bridge support are given, and the static analysis and calculation of the ASCB model and the seismic dynamic analysis of the Midas model are carried out. According to the rail transit in scenic spots, this paper puts forward the design principles of rail transit in the landscape area, which has some reference for similar engineering design.