摘要
为研究系梁对桥墩地震响应的影响,以连续刚构桥为研究对象,基于Perform-3D有限元软件,分别建立无系梁和设置系梁的计算模型,对2种计算模型进行动力特性分析、非线性时程分析。分析结果表明:设置系梁可以提高桥梁整体受力能力,减小桥梁的自振周期,改变桥梁的自振振型;设置系梁可以明显增大系梁处桥墩的地震响应,而对其他部分的墩身影响不明显;随着地震加速度的增大,系梁对桥墩地震响应的影响有增大的趋势。
In order to study the effect of the collar beam on the seismic responses of the bridge pier, the continuous rigid frame bridge is taken as the research object. Based on the finite element program Perform-3D, the calculation models without the collar beam and with the collar beam are established respectively. The dynamic characteristics analysis and nonlinear analysis are made on the two calculation models. The analytical results show that the collar beam improves the overall force capacity of the bridge, reduces the natural vibration period of the bridge and changes the natural vibration of the bridge, that the collar beam significantly increases the seismic response of the bridge pier with the collar beam, without obvious impact on other parts of the piers and that with the increase of earthquake acceleration, the collar beam has more tendency to influence the seismic responses of the bridge pier.
出处
《山东交通学院学报》
CAS
2016年第1期40-46,共7页
Journal of Shandong Jiaotong University
基金
武昌工学院校级科研立项项目(2014KYZ07)
关键词
系梁
非线性分析
地震响应
collar beam
non-linear analysis
seismic response
