【摘要】 以常见跨径简支斜交桥为例建立有限元模型,以新型摩擦摆系统支座、板式橡胶支座、抗震型橡胶支座和铰接支承连接为支座形式,通过有限元的方法,以斜度为常变参数,对以上4种支座的刚度和形式进行计算分析,进行常遇地震与罕遇地震下的反应谱和线性时程分析,算出桥墩内力并进行参数分析,对比研究地震对不同支座形式和刚度的斜交桥墩的影响。为正确进行斜交桥的抗震设计提供了有益参考。更多还原

【Abstract】 This paper takes common simply supported skew bridges with span as examples to build finite element models.Taking the new friction pendulum system bearing,laminated rubber bearing,seismic rubber bearing and joint bearing connection as bearing forms and obliquity as the changing parameter,through the method of finite element,this paper changes the rigidity and forms of the above four bearings and analyzes the response spectrum and linear time interval under ordinary earthquakes and severe ones respectively.Thus,this paper obtains the internal force of piers,carries out the parameter analysis and makes a comparison between the different effect of earthquakes on skew piers with different bearing forms and rigidity,which provides reference for the seismic design of skew bridges.更多还原