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兵工学报 ›› 2025, Vol. 46 ›› Issue (8): 240834-.doi: 10.12382/bgxb.2024.0834

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典型防爆装备对爆炸地震波的防护性能

刘瀚1,*(), 翟馨怡1, 杨磊1, 王志远1, 黄广炎1,2   

  1. 1.北京理工大学 爆炸科学与安全防护全国重点实验室, 北京 100081
    2.北京理工大学重庆创新中心, 重庆 401120
  • 收稿日期:2024-09-12 上线日期:2025-08-28
  • 通讯作者:
  • 基金资助:
    国家自然科学基金创新群体项目(12221002)

Protection Performance of Typical Explosion-proof Equipment against Explosion-induced Seismic Waves

LIU Han1,*(), ZHAI Xinyi1, YANG Lei1, WANG Zhiyuan1, HUANG Guangyan1,2   

  1. 1. State Key Laboratory of Explosion Science and Safety Protection, Beijing Institute of Technology, Beijing 100081, China
    2. Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, China
  • Received:2024-09-12 Online:2025-08-28

摘要:

爆炸地震波以其波长长、振幅强、传播速度快等特征,成为诱发建筑物坍塌和基础设施损毁等爆炸次生灾害的主要因素。基于2种典型防爆装备开展不同TNT药量的静爆试验,研究空爆(Free-Air Blast,FAB)、钢质防爆(Steel Explosion-Proof,SEP)和柔性防爆(Flexible Explosion-Proof,FEP)3种不同防护条件下爆炸地震波的传播衰减规律,分析SEP和FEP 2种典型防爆装备的振速时域响应与主振频率特性。构建SEP和FEP防护下的三轴峰值振速矢量和衰减模型,并据此划分建筑物破坏等级,细分为安全、轻微破坏、严重破坏三级判据准则。研究发现:三轴峰值振速矢量和随着TNT药量的增加而增大,随着爆距的增大而减小;三轴主频对于爆距或TNT药量的增大并无明显变化规律,相较于FAB,SEP和FEP均展现出对爆炸地震波三轴峰值振速的大幅度防护性能。所得研究结果可为相关防爆装备结构设计和爆炸地震波防护效能评价提供参考。

关键词: 爆炸地震波, 三轴峰值振速矢量和, 主振频率, 防爆装备, 防护性能

Abstract:

Explosion-induced seismic waves have become the main factors inducing secondary disasters such as building collapse and infrastructure damage due to their long wavelength,strong amplitude and fast propagation speed.Based on two kinds of typical explosion-proof equipment,the static explosion tests with different TNT dosages are carried out to study the propagation and attenuation law of explosion-induced seismic waves under three different protection conditions of free-air blast (FAB),steel explosion-proof (SEP) and flexible explosion-proof (FEP).The vibration velocity time-domain responses and main vibration frequency characteristics of SEP and FEP equipment are analyzed.The three-axis peak vibration velocity vector and attenuation models under the protection of SEP and FEP equipment are constructed,and the damage level of building is divided accordingly,which is subdivided into three criteria of safety,slight damage and serious damage.It is found that the vector sum of triaxial peak vibration velocities increases with the increase of TNT charge,and decreases with the increase of detonation distance.The triaxial dominant frequency shows no obvious change rule when the detonation distance or TNT charge increases.Compared with FAB,both SEP and FEP show significant protection performance against the triaxial peak vibration velocity of explosion-induced seismic waves.The research results can provide reference for the structural design of related explosion-proof equipment and the evaluation of explosion-induced seismic wave protection effectiveness.

Key words: explosion-induced seismic wave, vector sum of triaxial peak vibration velocities, dominant frequency, explosion-proof equipment, protection performance

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