Suppression of residual sliding displacement of flat-sliding structures by cushion stoppers

Suppression of residual sliding displacement of flat-sliding structures by cushion stoppers
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缓冲止动件抑制平面滑动结构残余滑动位移

DOI:
10.1016/j.soildyn.2021.106905
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发表时间:
2021
影响因子:
4
通讯作者:
Enokida Ryuta
Enokida Ryuta
中科院分区:
工程技术2区
文献类型:
--
作者:
V. C. Agulto;T. Iwamoto;H. Kitahara;K. Toya;V. K. Mag-usara;M. Imanishi;Y. Mori;M. Yoshimura;M. Nakajima;Meiyong Liao;右高裕二・松原拓朗・細井雄介・藤野陽三・田村洋・Dionysius Siringoringo・高橋竜太;Mayuko Nishio;Enokida Ryuta

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本文分析研究了在具有非现代滑动界面的平滑结构中设置缓冲挡块以抑制地震作用下的残余滑移的问题。基于一个基本的滑动结构模型,本研究建立了地震反应估计方法和制动器的设计,以避免显着的额外损害的上部结构。的设计和估计方法进行检查,使用数值模拟的摩擦系数约为0.2和设计的止动器的平板滑动结构。从检查中发现,适当设计的止动器可以提供预期的抑制效果,而不会对上部结构造成显著的额外力。估算方法合理地评估了有和无限位器情况下的地震响应。作为最佳实践,适当设计的止动器可以无间隙地放置,尽管就抗震和抑制位移的效率而言,几厘米内的小间隙也是可以接受的。
This paper analytically investigates the application of cushion stoppers to a flat-sliding structure having a non-modern sliding interface to suppress its residual sliding displacement during earthquakes. Based on a basic sliding structural model, this study builds seismic response estimation methods and a stopper design to avoid significant additional damage to superstructures. The design and estimation methods are examined using numerical simulations of flat-sliding structures having friction coefficients around 0.2 and designed stoppers. From the examinations, properly designed stoppers are found to provide the expected suppression effect without causing significant additional force to the superstructure. The estimation methods reasonably evaluate seismic responses for cases with and without stoppers. Stoppers properly designed can be placed without a gap as a best practice, although a small gap within a couple of centimeters is also acceptable in terms of the efficiency of seismic mitigation and suppression of displacement.
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