Seismic performance of cable-sliding friction bearing system for isolated bridges
Seismic performance of cable-sliding friction bearing system for isolated bridges
复制标题
孤桥索滑摩擦支座系统抗震性能
DOI：
10.1007/s11803-012-0108-2
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发表时间：
2012-07
影响因子：
2.8
通讯作者：
Z. RONG
中科院分区：
文献类型：
--
作者：
W. YUAN;B. WANG;C. Pakchiu;X. CAO;Z. RONG
在过去的强震中，公路桥梁由于过度的位移和/或非常大的横向力而遭受严重的破坏甚至倒塌。对于通常使用的具有纯摩擦滑动面的隔震支座，地震力可以减小，但位移通常不受约束。在本文中，一种替代的地震支座系统，称为电缆滑动摩擦支座系统，是通过集成的隔震装置与位移限制器组成的电缆连接到上，下板的轴承。提供恢复力以限制滑动部件的位移。设计参数，包括电缆的长度和刚度，摩擦系数，强度的剪切螺栓在一个固定式轴承，和地震激励下的运动进行了讨论。对一个承受竖向荷载和准静态循环横向荷载的原型轴承进行了实验室试验，并进行了相应的数值有限元模拟分析。结果表明，数值模拟结果与试验结果吻合较好，表明了新型支座系统的可行性。此外，还介绍了该支座体系在我国某多跨桥梁中的实际应用情况及其设计优点。
During past strong earthquakes, highway bridges have sustained severe damage or even collapse due to excessive displacements and/or very large lateral forces. For commonly used isolation bearings with a pure friction sliding surface, seismic forces may be reduced but displacements are often unconstrained. In this paper, an alternative seismic bearing system, called the cable-sliding friction bearing system, is developed by integrating seismic isolation devices with displacement restrainers consisting of cables attached to the upper and lower plates of the bearing. Restoring forces are provided to limit the displacements of the sliding component. Design parameters including the length and stiffness of the cables, friction coefficient, strength of the shear bolt in a fixed-type bearing, and movements under earthquake excitations are discussed. Laboratory testing of a prototype bearing subjected to vertical loads and quasi-static cyclic lateral loads, and corresponding numerical finite element simulation analysis, were carried out. It is shown that the numerical simulation shows good agreement with the experimental force-displacement hysteretic response, indicating the viability of the new bearing system. In addition, practical application of this bearing system to a multi-span bridge in China and its design advantages are discussed.
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影响因子：
4.5
作者：
D. Fenz;M. Constantinou
通讯作者：
D. Fenz;M. Constantinou
影响因子：
4.7
作者：
R. S. Jangid
通讯作者：
R. S. Jangid
影响因子：
4.5
作者：
R. Skinner;J. Kelly;A. Heine
通讯作者：
R. Skinner;J. Kelly;A. Heine
DOI：
10.5459/bnzsee.33.3.265-285
发表时间：
2000-09
期刊：
Bulletin of the New Zealand National Society for Earthquake Engineering
影响因子：
--
作者：
K. Kawashima
通讯作者：
K. Kawashima
DOI：
10.1016/j.msea.2006.05.098
发表时间：
2006-11
影响因子：
6.4
作者：
E. Choi;T. Nam;J. T. Oh;Baik-Soon Cho
通讯作者：
E. Choi;T. Nam;J. T. Oh;Baik-Soon Cho