有关居民住宅楼内燃气爆炸冲击波特性的研究

Numerical simulation of gas explosion in a residential building

为了研究燃气泄漏、爆炸事故对人员和建筑结构的灾害效应及影响范围,在调查燃气爆炸事故发生后住宅破坏的基础上,应用基于计算流体力学的FLACS软件给出了某一住宅内燃气爆炸过程的数值模拟。结果表明,基于FLACS的模拟能够还原灾害发生的过程,揭示了不同因素对爆炸结果的影响,并结合建筑结构的门、窗、玻璃等的实际破坏情况,给出了爆炸冲击波在住宅楼内传播的一般规律,研究成果可以为我国燃气爆炸造成的人员伤亡和结构破坏的灾后评估提供理论依据。

Based on the investigations of the residential buildings under gas explosion,a numerical simulation of the gas explosion in a residential building is obtained by using the FLACS software which is based on computational fluid dynamics,in order to reveal the destructive effect and the sphere of impact. The results show that the simulation of the FLACS is almost close to the process of disaster occurrence and finds the influence of different factors. Combined with the actual damage situation of the doors,windows,glass,etc. of building structure,the characters of explosion wave propagation in residential buildings was derived. The research results can provided a theoretical basis for post disaster assessment of casualties and structural damage under gas explosion.