东南大学学报（英文版）2025，Vol.41Issue(2)：127-139,13.DOI:10.3969/j.issn.1003-7985.2025.02.001
远场与近场地震下采用强连结叠层轮胎隔震支座的无筋砌体建筑的抗震易损性
Seismic fragility of unreinforced masonry buildings with bonded scrap tire rubber isolators under far-field and near-field earthquakes
摘要
Abstract
To improve the seismic performance of unrein-forced masonry(URM)buildings in the Himalayan re-gions,including Western China,India,Nepal,and Paki-stan,a low-cost bonded scrap tire rubber isolator(BSTRI)is proposed,and a series of vertical compression and hori-zontal shear tests are conducted.Incremental dynamic analyses are conducted for five types of BSTRI-supported URM buildings subjected to 22 far-field and 28 near-field earthquake ground motions.The resulting fragility curves and probability of damage curves are presented and utilized to evaluate the damage states of these buildings.The results show that in the base-isolated(BI)URM buildings under seismic ground motion at a peak ground acceleration(PGA)of 1.102g,the probability of exceeding the collapse preven-tion threshold is less than 25%under far-field earthquake ground motions and 31%under near-field earthquake ground motions.Furthermore,the maximum average vul-nerability index for the BI-URM buildings,which are de-signed to withstand rare earthquakes with 9°(PGA=0.632g),is 40.87%for far-field earthquake ground mo-tions and 41.83%for near-field earthquake ground mo-tions.Therefore,the adoption of BSTRIs can significantly reduce the collapse probability of URM buildings.关键词
无筋砌体结构/强连结叠层轮胎隔震支座/抗震易损性/损伤评估/远场地震/近场地震Key words
unreinforced masonry(URM)buildings/bonded scrap tire rubber isolator(BSTRI)/seismic fragil-ity/damage evaluation/far-field earthquake/near-field earthquake分类
土木建筑引用本文复制引用
王明阳,高文俊,吕西林,施卫星..远场与近场地震下采用强连结叠层轮胎隔震支座的无筋砌体建筑的抗震易损性[J].东南大学学报（英文版）,2025,41(2):127-139,13.基金项目
The National Natural Science Foundation of China(No.52208195),the Independent Subject of State Key Laboratory of Disaster Reduction in Civil Engineering of Tongji University(No.SLDRCE19-A-10). （No.52208195）
