减隔震混合装置在独塔斜拉桥抗震设计中的应用

发布时间：2018-03-10 15:10

本文选题：独塔斜拉桥　切入点：过渡墩　出处：《桥梁建设》2014年06期 　论文类型：期刊论文

【摘要】：为验证减隔震混合装置(2种或多种减隔震装置的组合)对独塔斜拉桥的减隔震效果,以徐尹路潮白河大桥主桥为背景进行研究。将铅芯橡胶支座与液体粘滞阻尼器共同应用于该桥过渡墩的横桥向抗震设计,采用MIDAS Civil 2012分析减隔震混合装置对独塔斜拉桥抗震性能的影响,并通过对液体粘滞阻尼器进行参数分析,得到适用于该桥的减隔震装置参数。结果表明:减隔震混合装置可以用于解决独塔斜拉桥的横桥向抗震问题。相对于常规设计,减隔震混合装置可以避免盆式支座在横桥向发生剪切破坏,也可以有效降低过渡墩的受力;相对于单独采用铅芯橡胶支座的抗震设计,减隔震混合装置可以改善横桥向位移响应及桥塔的受力,但会略微增大过渡墩的受力。
[Abstract]:In order to verify the isolation effect of two or more kinds of isolation devices for single tower cable-stayed bridge, Taking the main bridge of Chaobai River Bridge on Xuyin Road as the background, the lead rubber bearing and liquid viscous damper are applied to the transverse seismic design of the bridge's transition pier. MIDAS Civil 2012 is used to analyze the effect of the hybrid isolation device on the seismic performance of single-tower cable-stayed bridge, and the parameters of the liquid viscous damper are analyzed. The results show that the hybrid isolation device can be used to solve the lateral seismic problem of cable-stayed bridge with single tower. The hybrid device can avoid the shear failure of the basin bearing in the transverse direction of the bridge, and can also effectively reduce the force of the transition pier, compared with the seismic design of the lead rubber bearing alone, The hybrid device can improve the displacement response of the transverse bridge and the stress on the bridge tower, but it will slightly increase the force of the transition pier.
【作者单位】：北京工业大学城市与工程安全减灾教育部重点实验室;北京国道通公路设计研究院股份有限公司;
【基金】：国家重点基础研究发展计划(973计划)项目(2011CB013600) 国家自然科学基金项目(51208015) 中国博士后科学基金资助项目(2013T60047)~~
【分类号】：U442.55;U448.27

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