(1 新疆大学建筑工程学院， 乌鲁木齐 830047ꎻ 2 乌兰察布电力勘测设计院有限公司， 乌兰察布 012000)

摘要: 为研究老化￣荷载耦合作用下废旧叠层轮胎隔震垫(STP)的力学性能，选取废旧的四季胎制作 15 组规格为180mm×180mm×69mm 的 6 层 STP，其中 3 组为对照组，其余 12 组 STP 置于老化温度 100℃ 及荷载 5MPa 的条件下进行 77、154、231、308h 的加速老化试验ꎻ对试件进行竖向力学性能试验和拟静力试验，分析老化时间对 STP 的竖向刚度、水平等效刚度、滞回曲线、骨架曲线、屈服刚度和等效阻尼比的影响，并将废旧轮胎隔震体系中 STP(无卡槽 STP)和新型村镇墙下隔震体系中 STP(有卡槽 STP)的力学性能进行对比分析ꎮ 结果表明:STP 的竖向刚度随老化时间的增加而增大ꎻ随着老化时间的增加，STP 的滞回环面积均呈现先增加后减小的趋势，有卡槽 STP 滞回环面积均高于无卡槽 STP 滞回环面积ꎻ有卡槽和无卡槽 STP 的等效阻尼比随着老化时间的增加呈先减小后增大的规律ꎻ有卡槽 STP 的水平等效刚度和屈服刚度均高于无卡槽 STP，随着老化时间的增加有卡槽 STP 的水平等效刚度和屈服刚度均高于初始值，说明老化后的有卡槽 STP 的力学性能稳定，能明显提高基础的隔震性能ꎮ

关键词: 老化￣荷载耦合ꎻ 废旧叠层轮胎隔震垫ꎻ 新型村镇墙下隔震体系ꎻ 力学性能

中图分类号:TU352. 12 文献标志码:A 文章编号:1002￣848X(2022)01￣0086￣07

DOI:10. 19701 / j. jzjg. 20200302

Study on mechanical properties of waste laminated tire isolation pad under aging￣load coupling

ZHANG Guangtai1， ZHANG Wenmei1， WANG Mingyang1， ZHANG Jinpeng1， LU Dongliang2

(1 College of Civil Engineering， Xinjiang University， Wulumuqi 830047， Chinaꎻ 2 Wulanchabu Electric Power Surveyand Design Institute Co.， Ltd.， Wulanchabu 012000， China)

Abstract: In order to study the mechanical properties of waste laminated tire isolation pad ( STP ) under aging￣loadcoupling， 15 groups of 180mm×180mm×69mm 6￣layer STP were made from waste four￣season tire， and 3 groups were thecontrol group. The other 12 groups STP were subjected to accelerated aging tests of 77， 154， 231，308h under the agingtemperature of 100℃ and load of 5MPa. The vertical mechanical property test and quasi￣static test were carried out on thespecimens to analyze the effects of aging time on the vertical stiffness， horizontal equivalent stiffness， hysteresis curve，skeleton curve， yield stiffness and equivalent damping ratio of STP. The mechanical properties of STP ( STP without cardslots) in the waste tire isolation system and STP ( STP with card slots) in the new village wall isolation system werecompared and analyzed. The results show that the vertical stiffness of STP increases with aging time increasing. With theaging time increases， the area of the hysteresis loop of STP first increases and then decreases. The area of the hysteresisloop of the STP with card slots is higher than that of the STP without card slots. The equivalent damping ratio of STP withand without card slots decreases firstly and then increases with the aging time. The horizontal equivalent stiffness and yieldstiffness of STP with card slots are both higher than that of STP without card slots. With the increase of aging time， thehorizontal equivalent stiffness and yield stiffness of STP with card slots are both higher than the initial value， whichindicates that the aging STP with card slots has stable mechanical properties and can significantly improve the seismicisolation performance of foundation.

Keywords:aging￣load couplingꎻ waste laminated tire isolation padꎻ new village wall isolation systemꎻ mechanical property

∗新疆自治区教育厅自然科学重点项目(XJEDU2020I005)ꎮ

第一作者:张广泰，教授，博士生导师，主要从事混凝土和减隔震方面的研究，Email:zgtlxh@ 126. comꎮ

[引用本文] 张广泰，张文梅，王明阳，等. 老化￣荷载耦合下废旧叠层轮胎隔震垫力学性能研究[ J]. 建筑结构，2022，52(1):86￣92，77. ZHANG Guangtai，ZHANG Wenmei，WANG Mingyang， et al. Study on mechanical properties ofwaste laminated tire isolation pad under aging￣load coupling[J]. Building Structure，2022，52(1):86￣92，77.