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Proposed vulnerability assessment model for masonry buildings on slow-moving landslides based on physical models and field observations

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Abstract

The collection of relevant information about the vulnerability of infrastructure damaged by landslides is not an easy task due to the existence of several compounding factors and uncertainties. This makes it difficult to quantitatively estimate their vulnerability to slow-moving landslides. This paper presents a new vulnerability assessment model for masonry buildings on slow-moving landslides based on physical models and field observations. A masonry building model is made of brick and concrete at a scale of 1:10 to physically simulate the damage in structures caused by ground tension cracks commonly developed on slow-moving landslides. The tension crack opening process is simulated through a load-controlled table with an aperture on which the building model is constructed. The strain on the wall and its foundation were measured, and the damage of the model (crack formation and evolution for each loading step) was collected, described, and analyzed. These data were used to develop failure criteria for masonry buildings in rural areas in China in terms of a quantitative vulnerability curve. The quantitative model of vulnerability for masonry structures was established based on fuzzy mathematics and the Weibull function applied on the test data and observations. The vulnerability curve is verified with field cases of masonry buildings damaged by ground tension cracks associated with slow-moving landslides in the Three Gorges Reservoir area. The results support further testing and use of vulnerability curve proposed.

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Data availability

The model strain and damage data were from our experiment. The data of landslide deformation and building damaged were collected by the field work. And the monitoring data of the landslides in the TGR area was provided by the Hydrogeological and Environmental Geology Survey Center of China Geological Survey and Geological and Environmental Monitoring Station of Chongqing. The monitoring data is not available online. If readers want to have the data, they can request it by e-mail from the authors.

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Acknowledgements

We thank Xinghua Zhu, Juting Zhang, Wenfang Zhang, and other laboratory colleagues for assisting to complete the physical model test and the field investigation.

Funding

This research is supported by three projects “Studies on spatial–temporal differences in large accumulation landslide deformation and its vulnerability model for buildings in the Three Gorges Reservoir” (grant no. 41877525), “Study on quantitative vulnerability model of buildings considering the dynamic pressure integrated response mechanisms of landslide-generated impulse waves during run-up motion in reservoir area” (grant no 42207174), and “Study on the dynamic response of the quantitative vulnerability of buildings in different evolution stages of landslides” (grant no. 41601563), which are financed by the National Natural Science Foundation of China. The first author (grant no. 202106410017) is supported by the China Scholarship Council (CSC) as a visiting PhD student at the University of Alberta, Canada, under Dr. Renato Macciotta’s supervision.

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Correspondence to Lixia Chen.

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The authors declare no competing interests.

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Chen, Q., Macciotta, R., Chen, L. et al. Proposed vulnerability assessment model for masonry buildings on slow-moving landslides based on physical models and field observations. Bull Eng Geol Environ 82, 371 (2023). https://doi.org/10.1007/s10064-023-03385-z

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  • DOI: https://doi.org/10.1007/s10064-023-03385-z

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