废弃轮胎-砂地基抗震性能和恢复力模型研究  

Research on Seismic Behavior and Restoring Force Model of Scrap Tire-Sand Composite Foundation

作　　者：聂晓梅 王凤池[1] 孙畅 Nie Xiaomei;Wang Fengchi;Sun Chang(School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,P.R.China;School of Architectural and Surveying&Mapping Engineering,Shanxi Datong University,Datong,Shanxi 037009,P.R.China)

机构地区：[1]沈阳建筑大学土木工程学院,沈阳110168 [2]山西大同大学建筑与测绘工程学院,山西大同037009

出　　处：《地下空间与工程学报》2024年第1期113-121,132,共10页Chinese Journal of Underground Space and Engineering

基　　金：辽宁省"兴辽英才计划"项目(XLYC2005003);辽宁省高等学校创新团队(LT2019011)。

摘　　要：为研究废弃轮胎-砂构造地基的抗震性能,进行了6组轮胎-砂构造地基的拟静力试验,分析轮胎-砂单元体的堆砌方式、初始竖向荷载和碳纤维网片对构造地基的滞回性能的影响。在拟静力试验基础上用试验拟合法建立废弃轮胎-砂构造地基的恢复力模型。研究结果表明:废弃轮胎-砂构造地基的滞回曲线饱满,总体呈梭形,具有较好的耗能能力;轮胎-砂单元体错缝堆砌、增大随初始竖向荷载和增设碳纤维网片都有利于轮胎-砂构造地基参与耗能;轮胎-砂构造地基恢复力模型的滞回曲线计算结果和试验结果吻合程度较好,可以反映出试件的受力过程和主要受力特征。In order to study the seismic performance of the scrap tire-sand composite foundation,six groups of quasi-static tests of the tire-sand composite foundation are carried out.The effects of the stacking mode of the tiresand unit,the initial vertical load and the carbon fiber mesh on the hysteretic performance of the composite foundation are analyzed.Based on the pseudo static test,the restoring force model of the scrap tire-sand composite foundation is established by using the test fitting method.The results show that the hysteretic curve of the scrap tire-sand composite foundation is full,the overall shape is shuttle,thus it has good energy dissipation capacity.The staggered stacking of tire-sand unit,increasing the initial vertical load and adding carbon fiber mesh are conducive to the tiresand composite foundation to participate in energy consumption.The calculated results of hysteretic curve of the restoring force model are in good agreement with the test results,which can reflect the stress process and main stress characteristics of the specimen.

关 键 词：废弃轮胎 轮胎-砂构造地基 滞回曲线 恢复力模型 

分 类 号：TU5[建筑科学—建筑技术科学]