汤宇;杨军;李素灵;于琦;唐红亮;
TANG Yu;YANG Jun;LI Su-ling;YU Qi;TANG Hong-liang;State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology;Research Institute of Propellant and Explosive Engineering and Safety Technology of China Weapons Industry;

• 1:北京理工大学爆炸科学与技术国家重点实验室
• 2:中国兵器工业火炸药工程与安全技术研究院

摘要(Abstract)：

为了研究钢筋混凝土隔离墙在爆炸荷载作用下的动态响应和抗爆性能,采用LS-DYNA有限元软件建立9 m跨度隔离墙结构简化模型,模拟了不同药量和爆炸距离下隔离墙的动态响应。将模拟结果与经验超压公式计算结果和已有试验结果对比,验证了爆炸荷载和材料参数选取的合理性,分析了结构的破坏过程、冲击波作用规律、墙面荷载分布规律和结构变形情况。结果表明:建立的数值模拟可以较好地模拟爆炸冲击波与结构的相互作用;墙面冲击波压力衰减速率与药量和爆炸距离密切相关,墙面压力衰减幅度可达97.8%。在相同药量时,随着爆炸距离增加,墙体底部压力减小,顶部冲量增加;墙体结构由小变形转变为结构整体的较大变形;比例距离小于0.376■时,墙体底部容易发生剪切破坏。模拟结果可以为抗爆隔离墙的设计提供依据。
In order to study the dynamic response and anti-explosion performance of reinforced concrete isolation wall under the impact of blast load, the finite element software LS-DYNA was used to establish a simplified structural model of 9 m span isolation wall and the dynamic responses of the isolation wall under different charges and explosion distances were simulated. By comparing the simulation results with the calculated results of the empirical overpressure formula and the existing test results, the rationality of explosive load and material parameters selection was verified. The failure process of the structure, the law of shock wave action, the distribution law of wall load and the deformation of the structure were analysed. The result show that the numerical simulation established in this paper can well simulate the interaction between the blast wave and the structure and the attenuation rate of wall shock wave pressure is closely related to the charge and explosion distance, and the attenuation rate of wall pressure can reach 97.8%. At the same charge, as the explosion distance increases, the pressure at the bottom of the wall decreases and the impulse at the top increases. The wall structure changes from small deformation to large deformation of the whole structure. When the proportional distance is less than ■, the bottom of the wall is prone to shear failure. The simulation results can provide the basis for the design of the anti-explosion isolation wall.

关键词(KeyWords)： 爆炸荷载;数值模拟;隔离墙;抗爆性能
blast load;numerical simulation;isolation wall;anti-explosion performance

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51774043)

作者(Authors): 汤宇;杨军;李素灵;于琦;唐红亮;
TANG Yu;YANG Jun;LI Su-ling;YU Qi;TANG Hong-liang;State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology;Research Institute of Propellant and Explosive Engineering and Safety Technology of China Weapons Industry;

DOI: 10.19931/j.EB.20200205

参考文献(References)：

• [1] 杨青顺，魏雪英，赵均海，等.钢纤维混凝土板抗爆数值模拟[J].解放军理工大学学报(自然科学版),2007(5):530-533.YANG Q S,WEI X Y,ZHAO J H,et al.Numerical simulation of steel-fiber concrete slab subjected to blasting load[J].Journal of PLA University of Science and Technology,2007(5):530-533.
• [2] 赵春风，王强，王静峰，等.近场爆炸作用下核电厂安全壳穹顶钢筋混凝土板的抗爆性能[J].高压物理学报，2019,33(2):143-155.ZHAO C F,WANG Q,WANG J F ,et al.Blast resistance of containment dome reinforced concrete slab in NPP under close-in explosion[J].Chinese Journal of High Pressure Physics,2019,33(2):143-155.
• [3] 周晓青，洪家柱.爆炸荷载作用下钢筋混凝土墙的动态响应模拟[J].防灾减灾工程学报，2016,36(1):153-158.ZHOU X Q,HONG J Z .Numerical simulation of dynamic responses of RC walls under blast load[J].Journal of Disaster Prevention and Mitigation Engineering,2016,36(1):153-158.
• [4] 李天华.爆炸荷载下钢筋混凝土板的动态响应及损伤评估[D].西安：长安大学，2012.LI T H.Dynamic response and damage assessment of reinforced concrete slabs subjected to blast loading[D].Xi’an:Chang’an University,2012.
• [5] 董新龙，洪志权，高培正，等.混凝土板震塌破坏过程的实验及数值模拟分析[C]//第七届全国工程结构安全防护学术会议.宁波：中国力学学会，2009:41-45.DONG X L,HONG Z Q,GAO P Z ,et al.Experimental and numerical simulation analysis of seismic collapse failure process of concrete slabs [C]//The 7th National Academic Conference on Safety Protection of Engineering Structure.Ningbo:CSTAM,2009:41-45.
• [6] 张强，余曜，迟德建，等.柱形装药接触爆炸条件下对钢筋混凝土板的毁伤规律研究[J].空天防御，2020,3(2):16-23.ZHNAG Q,YU Z,CHI D J ,et al.Study on the damage effect of cylindrical charge on reinforced slabs[J].Air & Space Defence,2020,3(2):16-23.
• [7] 刘筹资，查恩尧，欧阳和平，等.水下爆炸气泡运动对水面形态影响的数值模拟[J].工程爆破，2021,27(4):40-50.LIU C Z,CHA E Y,OUYANG H P,et al.Numerical simulation of the influence of bubble movement on water surface morphology in underwater explosion[J].Engineering Blasting,2021,27(4):40-50.
• [8] YANG G,WANG G,LU W,et al.Experimental and numerical study of damage characteristics of RC slabs subjected to air and underwater contact explosions[J].Marine Stucures,2019,66:242-257.
• [9] 荣凯，杨军，董文学，等.爆炸荷载作用下覆土库外部冲击波传播规律[J].工程爆破，2020,26(3):1-7.RONG K,YANG J,DONG W X ,et al.The law of shock wave propagation outside earth covered magazine under explosion[J].Engineering Blasting,2020,26(3):1-7.
• [10] 刘锦，李峰辉，刘秀秀.基于HJC模型的煤岩冲击损伤特性研究[J].工程爆破，2021,27(2):35-43.LIU J,LI F H,LIU X X.Study on impact characteristics of coal-rock based on HJC model[J].Engineering Blasting,2021,27(2):35-42.
• [11] LIU Y,YAN J,HUANG F.Behavior of reinforced concrete beams and columns subjected to blast loading[J].Defence Technology,2018,14(5):550-559.
• [12] 王军国，吴祥云，李泽斌，等.聚脲加固黏土砖砌体抗爆性能试验研究[J].防护工程，2017(4):32-38.WANG J G,WU X Y,LI Z B,et al.Experimental investigation of response of polymer retrofit masonry walls subjected to blast[J].Protective Engineering,2017(4):32-38.
• [13] 王军国.喷涂聚脲加固粘土砖砌体抗动载性能试验研究及数值分析[D].合肥：中国科学技术大学，2017.WANG J G.Experimental and numerical investigation of clay brick masonry walls strengthened with spary polyurea elastomer under blast loads[D].Hefei:University of Science and Technology of China,2017.
• [14] 胡洋，朱建芳，朱锴.公共建筑结构内爆炸效应的数值模拟[J].安全与环境学报，2016,16(2):184-188.HU Y,ZHU J F,ZHU K.Numerical simulation study for the internal explosion effect on the structure of the public buildings[J].Journal of Safety and Environment,2016,16(2):184-188.
• [15] WU K C,LI B,TSAI K C.Residual axial compression capacity of localized blast-damaged RC columns[J].International Journal of Impact Engineering,2011,38:29-40.文章编号：1006-7051(2021)05-0047-06