预应力混凝土桥墩受力性能分析

Analysis on Stress Performance of Prestressed Concrete Bridge Pier

为了提高城市桥梁设计水平,文章以浦东北路支河1桥为研究对象,计算了作用在桥梁结构的竖向荷载、汽车制动力、温度力等,对桥墩盖梁在正常使用极限状态、持久状况、短暂状况下的应力进行分析,同时,利用桥梁博士软件和Midas Civil软件建立计算模型,计算了桥墩墩身在E1地震作用下的剪力,研究成果可供类似预应力混凝土桥墩设计借鉴。

In order to improve the design level of urban bridges,this paper takes Pudong North Road branch river No.1 bridge as the research object,calculates the vertical load,automobile braking force and temperature force acting on the bridge structure,and analyzes the stress of the bridge pier cap beam under the normal use limit state,persistent state,and transient state.At the same time,the calculation model is established by using Dr.Bridge software and Midas Civil software,and the shear force of the bridge pier body under the action of E1 earthquake is calculated.The research results can be used for reference in the design of similar prestressed concrete bridge piers.