An Integrated Probabilistic Method to Evaluate Building Vulnerability upon Landslide Impacts
Publication: Geo-Risk 2023
ABSTRACT
Building vulnerability under landslide impacts is a critical component in the quantitative risk assessment (QRA) of landslides. This paper proposes a probabilistic building vulnerability evaluation framework under landslide impacts. In the proposed framework, a unified numerical model combining a dynamic run-out model (used for simulating run-out behaviors of landslides) and a finite element method (used for simulating the building capacities) is constructed to simulate the damage degree of buildings under landslide impacts. Considering the uncertainties of both the landslide run-out and the building structures, a probability density evolution method (PDEM) is used to estimate the building vulnerability under landslide impacts. The proposed methodology is illustrated in a scenario where a loess-flow landslide impacts a five-story RC frame building. The results show that the computational efficiency of PDEM is significantly improved compared with the Monte Carlo simulation. Moreover, the vulnerability results can be more closely related to the QRA of individual landslides.
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Geo-Risk 2023
Pages: 256 - 266
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Published online: Jul 20, 2023
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