Damage assessment of buildings under combustible gas explosion resulting from urban gas pipelines leak

IF 4.2 3区工程技术 Q2 ENGINEERING, CHEMICAL Journal of Loss Prevention in The Process Industries Pub Date : 2025-03-13 DOI:10.1016/j.jlp.2025.105635

Xinhong Li, Mengdi Yang, Jie Ma, Xin Ning, Runquan Li

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Abstract

Urban natural gas pipeline leak and explosion accident can cause the catastrophic consequences, which threaten the safety of adjacent buildings. This paper presents a nonlinear dynamics simulation model for damage assessment of buildings under combustible gas explosion from urban gas pipelines leak. The dynamic response characteristics of the buildings adjacent to natural gas pipelines during the explosions are investigated considering the varying filling methods and gas concentrations. The model was verified by a real accident case. It can be seen that the damage is the most widespread when the combustible gas cloud is filled to the upper part of confined space, and the concentration increase of combustible gas can lead to the increase of damage in building. About 9.5 % concentration of combustible gas cloud cause the highest damage degree. The outcomes can support the safety design of building adjacent to urban natural gas pipelines.

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城市燃气管道泄漏可燃气体爆炸对建筑物的损害评估

城市天然气管道泄漏爆炸事故会造成灾难性后果，威胁到邻近建筑物的安全。本文建立了城市燃气管道泄漏可燃气体爆炸对建筑物损伤评估的非线性动力学仿真模型。考虑不同的充气方式和不同的气体浓度，研究了天然气管道附近建筑物在爆炸过程中的动态响应特性。该模型通过实际事故案例进行了验证。可以看出，当可燃气体云填充到密闭空间上部时，破坏最为普遍，可燃气体浓度的增加会导致建筑物的破坏增加。当可燃性气云浓度为9.5%时，其破坏程度最高。研究结果可为城市天然气管道相邻建筑的安全设计提供依据。

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来源期刊

Journal of Loss Prevention in The Process Industries 工程技术-工程：化工

CiteScore

7.20

自引率

14.30%

发文量

226

审稿时长

52 days

期刊介绍： The broad scope of the journal is process safety. Process safety is defined as the prevention and mitigation of process-related injuries and damage arising from process incidents involving fire, explosion and toxic release. Such undesired events occur in the process industries during the use, storage, manufacture, handling, and transportation of highly hazardous chemicals.