采用数值模拟方法对隔震沟隔震效应的研究  

Research on isolation effect of isolation ditch based on numerical simulation method

作　　者：耿民 刘玺 李植伟 王俊杰 刘峰 GENG Min;LIU Xi;LI Zhiwei;WANG Junjie;LIU Feng(Research Institute for National Defense Engineering of Academy of Military Science PLA China,Beijing 100036,China)

机构地区：[1]军事科学院国防工程研究院,北京100036

出　　处：《兵器装备工程学报》2024年第S01期293-299,共7页Journal of Ordnance Equipment Engineering

摘　　要：在实验室内进行爆炸实验产生的地震动会对实验室自身和周边建筑产生不利影响,为确保实验室建筑的稳定与安全,需要在爆源周围修建环状隔震沟。使用LS-DYNA软件对爆炸坑中装药爆炸产生的爆炸地震波分别在有、无隔震沟条件下的传播过程进行了数值模拟研究。通过改变装药量、隔震沟深度、宽度、隔震沟内填充材料类型以及实验坑内回填土类型等参数,探究不同参数对隔震沟隔震效应的影响,并计算出相应隔震率,为爆炸实验室及类似工程的隔震消能设计提供参考。Vibration-isolating slot between the charge and the protected area is widely used in blasting engineering.Vibration-isolating slot can isolate the seismic vibration and dissipate energy effectively.The seismic vibration caused by the explosion experiment in laboratory will adversely affect the surrounding buildings.To ensure the stability and safety of the laboratory building,a ring-shaped vibration-isolating slot needs to be built around the explosion source.Based on the above background,a numerical simulation using LS-DYNA software was carried out to study the propagation process of the explosive seismic wave generated by the explosive charge in the blast pit with and without vibration-isolating slot.The effect of different parameters has been explored by corresponding vibration-isolation rate.in different charge weigh,the depth and width of the vibration-isolating slot,the type of filling material in the vibration-isolating slot,and the type of backfill in the experimental pit.The result provides reference for the construction of engineering protection explosion laboratory and similar projects.

关 键 词：隔震沟 隔震率 数值模拟 LS-DYNA 

分 类 号：TJ011.1[兵器科学与技术—兵器发射理论与技术] TJ02