Quantitative physical model of vulnerability of buildings to urban flow slides in construction solid waste landfills: a case study of the 2015 Shenzhen flow slide

Hualin Cheng, Zhiyi Chen and Yu Huang ()
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Hualin Cheng: Tongji University
Zhiyi Chen: Tongji University
Yu Huang: Tongji University

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2022, vol. 112, issue 2, No 23, 1567-1587

Abstract: Abstract A new type of artificial slope, namely the construction solid waste (CSW) landfill, is being built around cities to dispose of waste. These artificial slopes pose risks to surrounding buildings and human lives. The assessment of the physical vulnerability of buildings to CSW flow slides is important for quantifying the risk, but few studies have investigated this subject. This paper proposes a novel method for the quantitative assessment of the physical vulnerability of buildings to CSW flow slides. To assess the vulnerability of buildings, both the building resistance and hazard intensity should be quantified. A set of resistance indicators for buildings are introduced, and an indicator-based building resistance model was developed to determine the susceptibility of buildings to CSW flow slides. A simplified flow slide intensity model considering both the principle of energy conservation and the spatial topography is introduced and further modified to quantify the silting depth of flow slides in three dimensions. A quantitative physical vulnerability model based on a modified sigmoid function and considering the building susceptibility indicators and flow slide intensity is proposed. The 2015 Shenzhen CSW flow slide was considered as a case study to apply the proposed method. The accuracy of the evaluation results was preliminarily verified by comparison to those calculated by an existing vulnerability model. This study provides a new method for quantitatively assessing the physical vulnerability of buildings to CSW flow slides and also serves as a guide for urban planning.

Keywords: Physical vulnerability; Urban flow slides; Construction solid waste landfills; Shenzhen flow slide (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s11069-022-05239-5

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