胡锦华
HU Jin-hua

• 1:中铁十六局集团北京轨道交通工程建设有限公司

摘要(Abstract)：

为了探究水下接触爆炸下钢筋混凝土板的毁伤破坏模式以及内部配筋的形变特性，利用AUTODYN软件建立了钢筋混凝土板水下接触爆炸全耦合精细模型，并通过水下接触爆炸现场试验，分析了水下接触爆炸荷载冲击下钢筋混凝土板的动态破坏全过程，探究了混凝土板内压力时程变化过程。结果表明：所建仿真耦合模型能够较好地描述水下接触爆炸下的爆炸冲击波传播以及钢筋混凝土板毁伤破坏过程；水下接触爆炸荷载作用下，钢筋混凝土板出现严重的冲切损伤，爆心区域板完全破碎、脱落，混凝土板整体变形较大，且内部配筋出现了较大的形变。
In order to study the damage mode of reinforced concrete slabs under underwater contact explosion and the deformation characteristics of internal reinforcing bars, the full coupling fine model of a reinforced concrete slab under underwater contact explosion is established by AUTODYN software. The whole dynamic failure process is analyzed based on the field tests of underwater contact explosion, and the time history change process of pressure in the concrete slab is also explored. The results show that the coupling model can well describe the propagation of shock waves and the damage process of the reinforced concrete slab under underwater contact explosion. Under the underwater contact explosion load, the reinforced concrete slab bears serious punching shear damage, the blasting core areas on the slab are completely broken and fall off, and both the overall concrete slab and the internal reinforcing bars appear large deformation.

关键词(KeyWords)： 钢筋混凝土板;水下接触爆炸;现场试验;数值仿真;破坏模式
reinforced concrete slabs;underwater contact explosion;field test;numerical simulation;damage mode

Abstract:

Keywords:

基金项目(Foundation): 中铁十六局集团豫机城铁项目基金资助项目(2015 JCCJ SG01)

作者(Author): 胡锦华
HU Jin-hua

DOI: 10.19931/j.EB.20200252

参考文献(References)：

• [1]WU C,OEHLERS D J,REBENTROST M,et al.Blast testing of ultra-high performance fibre and FRP-retrofitted concrete slabs[J].Engineering Structures,2009,31(9):2 060-2 069．
• [2]ZHOU X Q,HAO H.Mesoscale modelling and analysis of damage and fragmentation of concrete slab under contact detonation[J].International Journal of Impact Engineering,2009,36(12):1 315-1 326．
• [3]LAVAEI A,HOSSEINIPOUR S,LOHRASBI A.Numerical and experimental study of heavy concrete behavior under blast loading[J].Silvae Genetica,2015,57(2):105-120．
• [4]LI J,WU C,HAO H,et al.Experimental and numerical study on steel wire mesh reinforced concrete slab under contact explosion[J].Materials&Design,2017,116:77-91．
• [5]LI J,WU C,HAO H.Spallation of reinforced concrete slabs under contact explosion[C]//2016Second Asian Conference on Defence Technology (ACDT),IEEE,2016:42-45．
• [6]LI J,WU C,HAO H,et al.Experimental investigation of ultra-high performance concrete slabs under contact explosions[J].International Journal of Impact Engineering,2016,93:62-75．
• [7]赵小华，王高辉，卢文波，等．爆炸荷载作用下钢筋砼板结构的破坏特性[J]．工程爆破，2016,22(5):64-68.ZHAO X H,WANG G H,LU W B,et al.Structural damage characteristics of reinforced concrete slab under the explosion loading of contact and close-in[J].Engineering Blasting,2016,22(5):64-68．
• [8]YUN S H,JEON H K,PARK T.Parallel blast simulation of nonlinear dynamics for concrete retrofitted with steel plate using multi-solver coupling[J].International Journal of Impact Engineering,2013,60(60):10-23．
• [9]WANG W,ZHANG D,LU F,et al.Experimental study and numerical simulation of the damage mode of a square reinforced concrete slab under close-in explosion[J].Engineering Failure Analysis,2013,27(1):41-51．
• [10]王高辉，张社荣，卢文波．近边界面的水下爆炸冲击波传播特性及气穴效应[J]．水利学报，2015,46(8):999-1 007.WANG G H,ZHANG S R,LU W B.The influence of boundaries on the shock wave propagation characteristics and cavitation effects of underwater explosion[J].Journal of Hydraulic Engineering,2015,46(8):999-1 007．
• [11]YANG G,WANG G,LU W,et al.Numerical modeling of surface explosion effects on shallow-buried box culvert behavior during the water diversion[J].Thin-Walled Structures,2018,133:153-168．
• [12]娄浩然，胡晶，梁向前，等．超重力场下球形炸药水下爆炸实验及数值模拟[J]．工程爆破，2017,23(3):15-21,36.LOU H R,HU J,LIANG X Q,et al.Underwater explosion experiment and numerical simulation of spherical explosives under hypergravity field[J].Engineering Blasting,2017,23(3):15-21,36．
• [13]韩崇刚，郭成更，王娜峰．基于AUTODYN的乳化炸药水下爆炸能量分布的数值研究[J]．工程爆破，2018,24(1):27-31,77.HAN C G,GUO C G,WANG N F.Numerical studies on energy distribution of emulsion explosives using AUTODYN[J].Engineering Blasting,2018,24(1):27-31,77．
• [14]李惠明，陈智刚，赵东华，等．典型战斗部水下爆炸侵彻仿真[J]．工程爆破，2016,22(4):39-42.LI H M,CHEN Z G,ZHAO D H,et al.Penetration underwater explosion by typical warhead simulation[J].Engineering Blasting,2016,22(4):39-42．
• [15]闫秋实，宁素瑜，王全胜，等．近场水中爆炸作用下钢筋混凝土桩破坏模式及损伤评估研究[J]．混凝土，2019(7):32-36,40.YAN Q S,NING S Y,WANG Q S,et al.Damage effect for a typical reinforced concrete pile under the near field explosion in water[J].Concrete,2019(7):32-36,40．
• [16]孔祥清，赵倩，曲艳东，等．空中和水下爆炸时钢筋混凝土板动态响应对比分析[J]．科技导报，2016,34(18):279-286.KONG X Q,ZHAO Q,QU Y D,et al.Dynamic responses of a concrete slab subjected to air and underwater explosions[J].Science&Technology Review,2016,34(18):279-286．
• [17]RIEDEL W,THOMA K,HIERMAIER S,et al.Penetration of reinforced concrete by BETA-B-500numerical analysis using a new macroscopic concrete model for hydrocodes[C]//Proceedings of the 9th International Symposium on the Effects of Munitions with Structures.Berlin-Strausberg Germany,1999．
• [18]AUTODYN,Theory Manual[M].Century Dynamics,2006．
• [19]WANG Z,LU Y,HAO H,et al.A full coupled numerical analysis approach for buried structures subjected to subsurface blast[J].Computers&Structures,2005,83(4-5):339-356.