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Multivariate seismic intensity measures and vulnerability assessment framework for multistory masonry structures under near-field and far-field earthquake sequences
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DOI：10.1007/s10518-026-02631-5.png)
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Abstract
En 中文
Seismic intensity measurements from near-field and far-field earthquake sequences reveal distinct characteristics. Furthermore, the seismic fragility of multistory masonry structure clusters under the influence of pulse-like and non-pulse-like ground motions differs. In this paper, 13 seismic intensity measures based on seismic acceleration, velocity, displacement, and duration are compared. Using the Chinese macrointensity standard and the modified Mercalli intensity, a case study and comparative analysis of multiple intensity measures were conducted on the monitoring records of the 2008 Wenchuan earthquake in China and the 2024 Kyushu earthquake in Japan (3,286,056 earthquake acceleration values monitored by 32 stations). Field survey samples of 978 multistory masonry structures affected by the 2017 Jiuzhaigou earthquake in China were collected. An actual failure probability matrix for the multistory masonry structure cluster was established. A novel structural seismic fragility prediction model that accounts for regional seismic design acceleration was developed. To analyse the cumulative damage level of the multistory masonry structure, a relative cumulative failure assessment index model was proposed. A parameter estimation model for estimating the seismic failure level of a multistory masonry structure cluster was developed. A case study and method validation were performed using the established structural seismic damage dataset. The analytical results obtained are consistent with the actual field reconnaissance. The proposed method and model can serve as an effective reference for failure mode estimation of multistory masonry structures under pulse-like and non-pulse-like conditions in the near field and far field.
Keywords:
Near-field and far-field
Pulse-like and non-pulse-like ground motions
Multivariate seismic intensity measures
Seismic damage survey
Seismic fragility
Failure analysis
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