[1] WANG Mingyang, GAO Wenjun, LU Xilin, SHI Weixing, et al. Seismic fragility of unreinforced masonry buildings with bonded scrap tire rubber isolators under far-field and near-field earthquakes [J]. Journal of Southeast University (English Edition), 2025, 41 (2): 127-139. [doi:10.3969/j.issn.1003-7985.2025.02.001]
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Seismic fragility of unreinforced masonry buildings with bonded scrap tire rubber isolators under far-field and near-field earthquakes(
)
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
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 41
- Issue:
- 2025 2
- Page:
- 127-139
- Research Field:
- Civil Engineering
- Publishing date:
- 2025-06-17
Info
- Title:
- Seismic fragility of unreinforced masonry buildings with bonded scrap tire rubber isolators under far-field and near-field earthquakes
- 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
- Author(s):
- WANG Mingyang, GAO Wenjun, LU Xilin, SHI Weixing
- State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
- Keywords:
- unreinforced masonry (URM) buildings; bonded scrap tire rubber isolator (BSTRI); seismic fragility; damage evaluation; far-field earthquake; near-field earthquake
- PACS:
- TU362
- DOI:
- 10.3969/j.issn.1003-7985.2025.02.001
- Abstract:
- To improve the seismic performance of unreinforced masonry (URM) buildings in the Himalayan regions, including Western China, India, Nepal, and Pakistan, a low-cost bonded scrap tire rubber isolator (BSTRI) is proposed, and a series of vertical compression and horizontal 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 prevention threshold is less than 25% under far-field earthquake ground motions and 31% under near-field earthquake ground motions. Furthermore, the maximum average vulnerability index for the BI-URM buildings, which are designed to withstand rare earthquakes with 9° (PGA = 0.632g), is 40.87% for far-field earthquake ground motions and 41.83% for near-field earthquake ground motions. Therefore, the adoption of BSTRIs can significantly reduce the collapse probability of URM buildings.
- 为了提高喜马拉雅地区（中国西部和印度、尼泊尔、巴基斯坦）无筋砌体结构的抗震能力，提出了一种低成本的强连结叠层轮胎隔震支座（BSTRI），并对此支座进行了竖向压缩和水平剪切试验。针对此地区常见的5种砌体结构形式，对采用BSTRI隔震的无筋砌体结构进行了22次远场地震和28次近场地震的增量动力时程分析，得到远场和近场地震动下5种无筋砌体结构的地震易损性曲线和破坏状态失效概率曲线，量化评估结构的损伤破坏状态。结果表明：远场和近场地震动下，隔震结构在地面峰值加速度（PGA）为1.102
g 的地震激励下接近倒塌的超越概率分别小于25%和31%； 对于以9度罕遇（PGA = 0.632g ）为目标设计的隔震砌体结构，最大平均易损性指数在远场和近场地震动下分别为40.87%和41.83%。因此，采用BSTRI可以显著降低无筋砌体结构的倒塌破坏概率。
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Memo
- Memo:
-
Received 2024-10-10,Revised 2025-02-26.
Biographies: Wang Mingyang (1994—), male, Ph.D. candidate; Lu Xilin (corresponding author), male, doctor, professor, lxlst@tongji.edu.cn.
Foundation items: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).
Citation:WANG Mingyang,GAO Wenjun,LU Xilin,et al.Seismic fragility of unreinforced masonry buildings with bonded scrap tire rubber isolators under far-field and near-field earthquakes[J].Journal of Southeast University (English Edition),2025,41(2):127-139.DOI:10.3969/j.issn.1003-7985.2025.02.001.DOI:10.3969/j.issn.1003-7985.2025.02.001