刚性滑板-复位橡胶免承压支座隔震结构振动台试验

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摘要研发了一种新型自复位滑移摩擦隔震支座，该支座竖向支承和水平复位元件相互独立分离，摩擦耗能和自复位功能分别由刚性滑块和弹性橡胶完成。阐述了该支座基本构造及工作原理，提出并检验了该型支座的理论恢复力模型。设计并制作了三层装配式钢框架足尺模型，选用两条天然波及一条人工波，对基础隔震及非隔震结构进行7度（0.15g）多遇、设防及罕遇地震的地震模拟振动台试验。结果表明：新型支座的各组成部分本构关系独立明确、传力路径清晰，便于组装更换；采用该支座的隔震结构在各水准地震作用下的地震反应明显小于非隔震结构，隔震效果随试验地震动峰值加速度的增大而趋于显著；隔震层滞回曲线饱满，可有效吸收耗散地震能量，各支座始终保持较好的竖向稳定性，未出现倾覆提离现象，震后结构隔震层复位良好。

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	李武杰1
	2
	赖正聪1
	2
	封云龙1
	2
	白羽1
	2
	周立超1
	张田庆3

关键词 ：基础隔震, 滑移摩擦支座, 自复位, 足尺模型, 地震模拟振动台试验

Abstract：A new type of self-reset sliding friction isolation bearing is developed, in which the vertical support and horizontal reset elements are separated from each other independently, and the friction energy dissipation and self-reset function are completed by rigid slider and elastic rubber respectively. The basic structure and working principle of the bearing are expounded, and the theoretical restoring force model of this type of bearing is put forward and tested. A full-scale model of three-story prefabricated steel frame is designed and made. two natural waves and one artificial wave are selected to carry out 7-degree (0.15g) earthquake simulation shaking table tests on base-isolated and non-isolated structures. The results show that the constitutive relation of each component of the new bearing is independent and clear, the force transfer path is clear, and it is easy to assemble and replace, and the seismic response of the isolated structure with this bearing is obviously smaller than that of the non-isolated structure under the action of various levels. the isolation effect tends to be significant with the increase of the peak acceleration of the test ground motion. The hysteretic curve of the isolation layer is full, which can effectively absorb and dissipate seismic energy, each bearing always maintains good vertical stability, there is no overturning and lifting phenomenon, and the structural isolation layer replaces well after the earthquake.

Key words： base-isolated sliding friction bearing self-reset full-scale model shaking table test of seismic simulation

收稿日期: 2022-08-30 出版日期: 2023-08-15

引用本文:

李武杰1,2，赖正聪1,2，封云龙1,2，白羽1,2，周立超1，张田庆3. 刚性滑板-复位橡胶免承压支座隔震结构振动台试验[J]. 振动与冲击, 2023, 42(15): 108-117.
LI Wujie1,2, LAI Zhengcong1,2, FENG Yunlong1,2, BAI Yu1,2, ZHOU Lichao1, ZHANG Tianqing3. Shaking table tests for rigid sliding plate-resetting rubber bearing isolation structure. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(15): 108-117.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2023/V42/I15/108

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