吉林大学学报(工学版) ›› 2021, Vol. 51 ›› Issue (4): 1306-1316.doi: 10.13229/j.cnki.jdxbgxb20191055
• 交通运输工程·土木工程 • 上一篇
Guang-tai ZHANG1(),Ming-yang WANG1,Qiao-jun GUO1,Jin-peng ZHANG1,Dong-liang LU2
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。
中图分类号:
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[1] | 张广泰,章金鹏,王明阳,陆东亮,张梅. 老化‒荷载耦合作用下废旧叠层轮胎隔震垫隔震性能[J]. 吉林大学学报(工学版), 2021, 51(1): 96-106. |
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