Investigation of a semi-empirical load model of natural gas explosion in vented spaces

作     者：Shigang Yang Jiongwei Cai Ya Yang Qin Fang Qi Bao Senpei Wang 

作者机构：National Defense College of EngineeringArmy Engineering University of PLANanjing 210007China 73021 Troop of PLAHangzhou 310012China Naval Command College of PLANanjing 210016China 

出 版 物：《Journal of Safety Science and Resilience》 (安全科学与韧性（英文）)

年 卷 期：2021年第2卷第3期

页      面：157-171页

核心收录：

学科分类：08[工学] 0838[工学-公安技术] 

基　　金：The authors gratefully acknowledge the financial support from Natural Science Foundation of Jiangsu Province of China(Grant No.BK20180081) National Key R&D Program of China(Great No.2020YFB2103300) National Basic Research Program of China(973 Program)(Grant No.2015CB058000) 

主　　题：Vented gas explosion Load model Overpressure-time history Gas concentration Venting pressure 

摘      要：Due to the influence of many factors,the overpressure-time history load model of vented gas explosions is difficult to describe and is not conducive to further structural *** on vented gas explosion test data,this paper obtains three typical overpressure-time history curves and puts forward a new semi-empirical model-double hump model that considers gas concentration and venting pressure,and gives a formula for peak pressure and overpressure-time history *** scientificity of the model is then verified by the total impulse in the *** model is able directly reflect the load characteristics,provide reference for calculating key parameters of a vented gas explosion and provide information on the structural response under the *** model thereby has the potential to help reduce the impact of gas explosion disasters.