空中与水下爆炸工况下轨条砦结构毁伤效应研究  

Study on the damage effect of concrete pile under air and underwater explosion

作　　者：唐松磊 翟红波[1] 毛伯永 吕民东 陈凯 TANG Songlei;ZHAI Hongbo;MAO Boyong;LYU Mindong;CHEN Kai(Xi’an Modern Chemistry Research Institute,Xi’an 710065,China;Beijing Institute of Structure and Environment Engineering,Beijing 100076,China;Zhejiang Jinpu Construction Co.,Ltd.,Jinhua 322111,China)

机构地区：[1]西安近代化学研究所,西安710065 [2]北京强度环境研究所,北京100076 [3]浙江金浦建筑有限公司,浙江金华322111

出　　处：《兵器装备工程学报》2025年第3期1-7,共7页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(12102337)。

摘　　要：采用有限元软件AUTODYN构建了轨条砦结构在不同介质中遭受爆炸冲击的数值模型,通过数值模拟结果对比分析了空中和水下爆炸冲击波作用下轨条砦结构动态响应及损伤程度。研究结果表明,在近爆区域内,空中和水下爆炸冲击波的传播特性存在显著差异,爆轰波在空气中的传播速度和衰减速度均较水中更快;然而,水下爆炸冲击波的压力峰值较空中爆炸显著增大,对轨条砦结构的潜在破坏能力更强。此外,随着TNT爆炸当量的增加,结构的碎裂程度也随之升高。对于由C30混凝土建造的轨条砦,其近炸破坏TNT当量阈值确定为15 kg。这一研究成果为近海防御工程的设计提供了重要基础,并为制定登陆破障方案提供了参考依据。AUTODYN is used to establish a numerical model for the explosion of concrete pile in different media.The effects of blast shock waves on the dynamic response of concrete pile in air and underwater are studied,and the effects of different amounts of explosives on the dynamic response of concrete pile in air and underwater are compared.The results show that there is a great difference between the propagation characteristics of blast wave in air and underwater in the near-detonation area.The propagation speed and attenuation speed of detonation wave in air are faster than that of water.However,the peak value of shock wave pressure of underwater explosion is much larger than that of air explosion,which has stronger potential damage capacity to the concrete pile.The larger the TNT equivalent,the higher the degree of fragmentation generated by the structure,with a threshold of 15 kg TNT equivalent for rail abatis constructed of C30 concrete.The research results can provide a basis for the design of offshore defense and a reference for the formulation of accurate offshore barrier breaking schemes.

关 键 词：轨条砦结构 空中爆炸 水下爆炸 动态响应 毁伤阈值 

分 类 号：K875.8[历史地理—考古学及博物馆学] TJ410[历史地理—历史学]