热氧老化下废旧叠层轮胎隔震垫恢复力模型  

Scarp tire rubber pads′s practical restoring force model under the effect of thermal oxidation aging

作　　者：张广泰[1] 王明阳 郭俏君 章金鹏 陆东亮 ZHANG Guang-tai;WANG Ming-yang;GUO Qiao-jun;ZHANG Jin-peng;LU Dong-liang(School of Architecture and Engineering,Xinjiang University,Urumqi 830047,China;Wulanchabu Electric Power Survey and Design Institute Co.,Ltd.,Wulanchabu 012000,China)

机构地区：[1]新疆大学建筑工程学院,乌鲁木齐830047 [2]乌兰察布电力勘测设计院有限公司,内蒙古乌兰察布012000

出　　处：《吉林大学学报（工学版）》2021年第4期1306-1316,共11页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51568064);新疆维吾尔自治区教育厅自然科学重点项目(XJEDU2020I005).

摘　　要：为研究热氧老化作用下废旧叠层轮胎隔震垫(STP)的恢复力模型,对不同老化时间下的STP进行低周往复加载试验,分析STP的滞回耗能特性。基于双弹簧模型,同时结合STP拟静力试验结果,提出了适用于叠层轮胎隔震垫恢复力模型,建立了不同老化时间和设计压应力下叠层轮胎隔震垫的双弹簧恢复力模型。通过MATLAB模拟滞回性能与试验滞回性能对比,验证了该模型可以很好地反映STP的耗能性能。结果表明:随着老化时间的增加,STP的水平等效刚度、单位循环耗能面积和等效阻尼比均先增加后减小,在实际老化50 a时三者达到最大,满足村镇建筑50 a内的隔震耗能;建立的热氧老化条件下的恢复力模型能够较好地模拟STP在不同老化时间、不同设计压应力下的滞回特性,可为STP在隔震建筑中的应用提供理论参考。In order to study the restoring force model of Scarp Tire Rubber Pads(STPs)under the thermal oxidation aging,cyclic loading tests with different aging time were performed and the hysteretic dissipated energy characteristics of STPs were analyzed.Based on the double spring model,and combined with the results of STP pseudo-static test,this paper presented a restoring force model for STPs and established a two-spring restoring force model for STPs with different aging time and design compressive stress.By comparison of MATLAB simulation of hysteretic performance and experimental hysteretic performance,it is verified that the model could well reflect the energy dissipation performance of STPs.The results show that,with the increase of aging time,the horizontal equivalent stiffness,unit cycle energy dissipation area and equivalent damping ratio of STPs all increase first and then decrease,reaching the maximum in actual aging of 50 a,which can meet the isolation energy consumption of rural buildings within 50 a.The establish restoring force model under the condition of hot oxygen aging can better simulate the hysteretic characteristics of STPs under different aging time and different design compressive stress,which can provide theoretical reference for the application of STPs in isolated buildings.

关 键 词：热氧老化 废旧叠层轮胎隔震垫 双弹簧恢复力模型 设计压应力 

分 类 号：TU352.12[建筑科学—结构工程]