（新疆大学建筑工程学院， 乌鲁木齐 830047）

［摘要］为了研究叠层轮胎隔震垫用于墙下隔震技术时的隔震性能，将叠层轮胎隔震垫置于模拟墙下隔震技术的槽形圈梁加载装置中，并对其进行压剪试验，得出滞回曲线、骨架曲线、水平等效刚度、等效阻尼比及耗能能力各项隔震指标，并进行数值拟合，得出各指标随水平位移的变化规律。结果表明，隔震垫滞回曲线饱满，具有良好的隔震性能，水平加载位移为±45mm时，骨架曲线、水平位移-水平等效刚度关系曲线、水平位移-等效阻尼比关系曲线、水平位移-耗能能力关系曲线的趋势都发生了变化。

［关键词］叠层轮胎隔震垫；  墙下隔震技术； 水平刚度； 等效阻尼比； 骨架曲线

中图分类号：TU352-12文献标识码：A文章编号：1002-848X(2020)23-0104-04

Study on seismic isolation performance of scrap tire pad for under-wall seismic isolation technology

CAI Zengxia, ZHANG Guangtai, LI Baoyuan, LU Dongliang

(School of Architecture and Engineering, Xinjiang University， Urumqi 830047， China)

Abstract:In order to study the seismic isolation performance of scrap tire pads used in under-wall seismic isolation technology, the scrap tire pads were placed in a trough-shaped ring beam loading device that simulated the under-wall seismic isolation technology and compression and shear tests were performed on it, various seismic isolation indexes of hysteresis curve, skeleton curve, horizontal equivalent stiffness, equivalent damping ratio and energy dissipation capacity were obtained, and the numerical fitting was performed to obtain the change rule of each index with horizontal displacement. The results show that the hysteresis curve of the seismic isolation pad is full and has good seismic isolation performance. When the horizontal loading displacement is ±45mm, the trend of the skeleton curve, the horizontal displacement-horizontal equivalent stiffness relationship curve, the horizontal displacement-equivalent damping ratio relationship curve, and the horizontal displacement-energy dissipation capacity relationship curve have all changed.

Keywords:scrap tire pad; under-wall seismic isolation technology; horizontal stiffness; equivalent damping ratio; skeleton curve

*国家自然科学基金项目（201504101182）。

作者简介：才增霞，硕士，Email：1749592973@qq.com； 通信作者：张广泰，学士，教授，Email：czx920926@sina.com。