Derive empirical fragility functions for Nepali residential buildings
Derive empirical fragility functions for Nepali residential buildings
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DOI：
10.1016/j.engstruct.2018.06.018
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发表时间：
2018-09-15
影响因子：
5.5
通讯作者：
de Magistris, Filippo Santucci
中科院分区：
文献类型：
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作者：
Gautam, Dipendra;Fabbrocino, Giovanni;de Magistris, Filippo Santucci
易损性函数是新一代基于性能的地震工程(PBEE-2)框架损伤分析的关键组成部分。尽管在几乎所有的地震活跃地区都有广泛的讨论和研究课题，但尼泊尔建筑的易损性函数至今还没有得到广泛的研究。本文使用1934年比哈尔-尼泊尔地震(M-W类似于8.4)、1980年昌普尔地震(M-W 6.5)、1988年尼泊尔东部地震(M-W 6.8)、2011年尼泊尔东部地震(M-W 6.9)和2015年高尔卡地震序列(M-W 7.8)的100多万个破坏数据，推导出住宅建筑的经验易损性函数。提出了一种新的损伤分类体系，并推导了钢筋混凝土、砖砌体和石砌体类房屋的脆性函数。在喜马拉雅地震中，场地效应是造成破坏的主要因素之一，因此还推导了考虑场地效应的三类建筑物的易损性函数。最后，将本文推导的脆性函数与已有的脆性函数进行了比较，并对两者的差异进行了讨论。结合易损性功能，概述了尼泊尔现有建筑的分类和易损性。
Fragility functions are the key components of damage analysis for the next generation performance-based earthquake engineering (PBEE-2) framework. Despite being widely discussed and researched topic in almost all seismically active regions, fragility functions for Nepali buildings are not widely researched to date. This paper derives empirical fragility functions for residential buildings using more than a million damage data from the 1934 Bihar-Nepal earthquake (M-w similar to 8.4), 1980 Chainpur earthquake (M-w 6.5), 1988 Eastern Nepal earthquake (M-w 6.8), 2011 Eastern Nepal earthquake (M-w 6.9), and 2015 Gorkha seismic sequence (M-w 7.8). A new damage classification system is proposed in this study and fragility functions for reinforced concrete, brick masonry, and stone masonry building classes are derived. As seismic site effects is one of the leading factor contributing damage in the case of Himalayan earthquakes, fragility functions considering seismic site effects are also derived for all three building classes. Finally, fragility functions derived in this study are compared with existing fragility functions and discussion regarding the discrepancies is presented. Together with the fragility functions, building taxonomy and vulnerability of all existing buildings in Nepal are outlined in this paper.