摘要
针对约束泄爆结构静开启压力这一关键特征参数,对建筑物内气体爆炸瞬态流场展开数值模拟研究,探索不同静开启压力条件下爆炸压力载荷的分布规律。研究结果证实了爆炸压力载荷双峰结构的客观存在,阐释了双峰压力结构在时间上的分布规律,揭示了双峰时间间隔随泄爆结构静开启压力的非线性特征。研究成果为建筑物内可燃气体爆炸事故的定量风险评估及气体爆炸荷载下建筑结构动力响应与防爆抗爆安全设计奠定必要的理论基础。
The transient flow field of the gas explosion in a building has been studied by numerical simulation to explore the distribution characteristics of the explosion pressure load under different static activation pressure to restrict the static activation pressure of the explosion venting structure,which is a key characteristic parameter. The results confirmed the objective existence of the bimodal structure of the explosion pressure load,illustrated the distribution characteristics of the bimodal structure of pressure with time,and revealed the nonlinear distribution characteristics of the bimodal interval with the change of the static activation pressure of the explosion venting structure. Research results provide necessary theoretical basis for the quantitative risk assessment of the indoor flammable gas explosion,building structure dynamic response under gas explosion load and safety design for explosion prevention and resistance.
出处
《工业安全与环保》
北大核心
2017年第7期11-13,共3页
Industrial Safety and Environmental Protection
基金
国家自然科学基金(51404029
51604031)
灭火救援技术公安部重点实验室开放课题(KF201607)
关键词
气体爆炸
泄爆
静开启压力
爆炸载荷
gas explosion
explosion venting
static activation pressure
explosion load