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Vulnerability prediction model of typical structures considering empirical seismic damage observation data

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Abstract

To deeply explore the seismic vulnerability characteristics of typical structures and obtain the differences in the seismic capacity of multiple structural categories in actual earthquakes, combined with mathematical statistics and probabilistic damage model analysis methods, the bulk of collection and statistics were made on the structural seismic damage observation data (98,051.8122 × 104 m2 and 995,269 buildings) of 213 destructive earthquakes in China from 1975 to 2013. Seismic damage sample databases of wooden roof truss structures, adobe and timber structures, brick wood structures, masonry structures, RC structures, and bottom frame seismic wall masonry structure were established. A seismic damage investigation and analysis were conducted. All samples’ vulnerability grades were evaluated using the latest version of the Chinese seismic intensity scale (CSIS-20). The actual damage vulnerability probability matrix and surface model of structures in multiple intensity regions based on the investigated area and quantity parameters were established. A nonlinear regression prediction model analysis method was proposed. A typical structural vulnerability prediction model considering the failure ratio and exceedance probability in the multi-intensity region was established and verified by the earthquake damage database. In addition, a vulnerability matrix prediction model considering updating the mean vulnerability index parameter was proposed, and a comparison model of the vulnerability prediction matrix of typical regional structures was developed.

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Acknowledgements

The basic data of this study were derived from the seismic damage investigation database of the China Earthquake Administration (CAE) and the Wenchuan earthquake damage investigation team of the Institute of Engineering Mechanics of CAE. I would like to express my sincere gratitude to them. In addition, the research described in this paper was financially supported by the Basic Scientific Research Business Expenses of Provincial Universities in Heilongjiang Province (2021-KYYWF-0044) and Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education.

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Correspondence to Si-Qi Li or Hong-Bo Liu.

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Li, SQ., Liu, HB. Vulnerability prediction model of typical structures considering empirical seismic damage observation data. Bull Earthquake Eng 20, 5161–5203 (2022). https://doi.org/10.1007/s10518-022-01395-y

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  • DOI: https://doi.org/10.1007/s10518-022-01395-y

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