Experimental and Numerical Investigation on the Damage Effects of Concrete Pier under Contact Explosion

doi:10.12382/bgxb.2022.0397

Abstract

Abstract:

The damage effects of concrete pier under the action of contact explosion are studied. Firstly, the K&C, HJC, RHT and Kong-Fang models are respectively used to numerically calculate the failure effects of concrete pier. The failure modes, the number of cracks, the number of broken blocks and the change in residual heights of core and side are discussed and compared with the test results. The results show that the four models can effectively predict the failure modes of concrete pier: the upper half and lower half of concrete pier show different failure modes under the explosion of the top group charge. The upper half is broken and damaged to form a large number of fragments ranging from 1cm to 10cm in diameter, and the lower half is ruptured to be cracked into a limited number of blocks. Kong-Fang model can more reliably predict the number and residual heights of broken blocks. On this basis, the variation of damage characteristic parameters of residual blocks with the charge volume was studied. It is found that, with the increase in the charge from 1.0kg to 4.5kg, the number of broken blocks increases to 25 pieces, and the size of the bottom surface of a block decreases from 40cm to 15cm, which is about 1/5-1/25 of the size of concrete pier in the broken part. The core residual height and side residual height decrease rapidly when the charge volume increases from 1.0kg to 3.5kg, and are stabilized at 40cm and 28cm, respectively, after the charge of 4kg, and no longer changed significantly. Based on the above research results, the formulas for the changes in the number of blocks, the residual height of the core and the residual height of the side are fitted. The research in this paper provides a basis for the effective implementation of concrete pier blasting operations.

Key words: concrete pier, top blast, damage effect, numerical calculation, test

CLC Number:

O389
TB41

KANG Gengxin, YAN Haichun, ZHANG Yadong, LIU Mingjun, HAO Likai. Experimental and Numerical Investigation on the Damage Effects of Concrete Pier under Contact Explosion[J]. Acta Armamentarii, 2024, 45(1): 144-155.

Figures/Tables 22

References 35

[1]	顾文彬, 叶序双, 王自力. 水中爆炸冲击波作用下混凝土墩动态响应初步分析[J]. 爆炸与冲击, 1999, 26(1): 73-78.
	GU W B, YE X S, WANG Z L. Dydamic response analysis of concrete body for underwater shock waves[J]. Explosion and Shock Waves, 1999, 26(1):73-78. (in Chinese)
[2]	顾文彬, 郑向平, 刘建青, 等. 浅层水中爆炸冲击波对混凝土墩斜碰撞作用试验研究[J]. 爆炸与冲击, 2006, 26(4): 361-366.
	GU W B, ZHENG X P, LIU J Q, et al. Experimental investigation of the oblique collision effects of explosion shock wave on concrete frustum in shallow water[J]. Explosion and Shock Waves, 2006, 26(4):361-366. (in Chinese)
[3]	李裕春, 程克明, 沈蔚, 等. 水中冲击波对混凝土结构破坏的实验研究[J]. 材料工程, 2008, 36(12): 19-23.
	LI Y C, CHENG K M, SHEN W, et al. Damage analysis of concrete structure by underwater shock[J]. Journal of Materials Engineering, 2008, 36(12):19-23. (in Chinese)
[4]	李裕春, 刘强, 毛益明, 等. 浅层水中冲击波作用下混凝土墩的动态响应分析[C]// 第七届全国工程结构安全防护学术会议论文集. 宁波: 中国力学学会爆炸力学专业委员会和中国土木工程学会防护工程分会, 2009: 89-94.
	LI Y C, LIU Q, MAO Y M, et al. Analysis of dynamic response of concrete frustum under shock waves in shallow water [C]// Proceedings of the 7th National Academic Conference on Safety Protection of Engineering Structure.Ningbo, China: Professional Committee of Explosive Mechanics, the Chinese Society of Theoretical and Applied Mechanics, and Protective Engineering Branch of China Civil Engineering Society, 2009: 89-94. (in Chinese)
[5]	郝礼楷, 顾文彬, 邹绍昕, 等. 空气中集团装药对混凝土墩接触爆炸毁伤研究[J/OL]. 兵器装备工程学报:1-6[2022-04-27].
	HAO L K, GU W B, ZOU S X, et al. Damage study of the concrete obstacle caused by air contact explosion of group charge[J/OL]. Journal of Ordnance Equipment Engineering: 1-6[2022-04-27]. (in Chinese)
[6]	MALVAR L J, CRAWFORD J E, WESEVICH J W, et al. A plasticity concrete material model for DYNA3D[J]. International Journal of Impact Engineering, 1997, 19(9):847-873. doi: 10.1016/S0734-743X(97)00023-7 URL
[7]	HOLMQUIST T J, JOHNSON G R, COOK W H. A computational constitutive model for concrete subjected to large strains, high strain rates, and high pressures[C]// Proceedings of the 14th International Symposium on Ballistics. Quebec, Canada: American Defense Preparedness Association, 1993: 591-600.
[8]	RIEDEL W, THOMA K, HIERMAIER S, et al. Penetration of reinforced concrete by BETA-B-500 numerical analysis using a new macroscopic concrete model for hydrocodes[C]// Proceedings of the 9th International Symposium on the Effects of Munitions with Structures. Berlin, Germany: Akadernie für Kommunikation ond Information, 1999: 1-8.
[9]	ZHOU X Q, KUZNETSOV V A, HAO H, et al. Numerical prediction of concrete slab response to blast loading[J]. International Journal of Impact Engineering, 2008, 35(10):1186-1200. doi: 10.1016/j.ijimpeng.2008.01.004 URL
[10]	HARTMANN T, PIETZSCH A, GEBBEKEN N. A hydrocode material model for concrete[J]. International Journal of Protective Structures, 2010, 1(4):299-318. doi: 10.1260/2041-4196.1.3.299 URL
[11]	GEBBEKEN N, RUPPERT M. A new material model for concrete in high-dynamic hydrocode simulations[J]. Archive of Applied Mechanics, 2000, 70(7):18-29.
[12]	LIAO Z, LI Z Z, XUE Y L, et al. Study on anti-explosion behavior of high-strength reinforced concrete beam under blast loading[J]. Strength of Materials, 2019, 51(9/10):299-318.
[13]	汪剑辉, 吕林梅, 尚伟, 等. 接触爆炸载荷下钢筋混凝土梁的毁伤特性研究[J]. 防护工程, 2020, 42(2): 22-27.
	WANG J H, LÜ L M, SHANG W, et al. Study of damage characteristics of reinforced concrete beams under contact explosion load[J]. Protective Engineering, 2020, 42(2):22-27. (in Chinese)
[14]	ZHANG Z, YAN L H, HE Z Y, et al. Study on the blast resistance of concrete beams reinforced with ultra[J]. IOP Conference Series:Materials Science and Engineering, 2020, 780:042023.10.1088/1757-899X/780/4/042023.
[15]	徐世烺, 吴平, 周飞, 等. 活性粉末混凝土抗多次侵彻实验研究及数值预测[J] 爆炸与冲击, 2021, 41(6): 68-83.
	XU S L, WU P, ZHOU F, et al. Experimental investigation and numerical prediction on resistance of reactive powder concrete to multiple penetration[J]. Explosion and Shock Waves, 2021, 41(6):68-83. (in Chinese)
[16]	王政, 倪玉山, 曹菊珍, 等. 冲击载荷下混凝土本构模型构建研究[J]. 高压物理学报, 2006, 20(4): 337-344.
	WANG Z, NI Y S, CAO J Z, et al. Building of a constitutive model for concrete under dynamic impact[J]. Chinese Journal of High Pressure Physics, 2006, 20(4): 337-344. (in Chinese)
[17]	LIU Y, MA A, HUANG F L. Numerical simulations of oblique-angle penetration by deformable projectiles into concrete targets[J]. International Journal of Impact Engineering, 2009, 36(3):438-446. doi: 10.1016/j.ijimpeng.2008.03.006 URL
[18]	LEPPÄNEN J. Concrete subjected to projectile and fragment impacts: Modelling of crack softening and strain rate dependency in tension[J]. International Journal of Impact Engineering, 2006, 32(11):1828-1841.DOI:10.1016/j.ijimpeng.2005.06.005.
[19]	TU Z G, LU Y. Modifications of RHT material model for improved numerical simulation of dynamic response of concrete[J]. International Journal of Impact Engineering, 2010, 37(10):1072-1082.DOI:10.1016/j.ijimpeng.2010.04.004.
[20]	NYSTRÖM U, GYLLTOFT K. Comparative numerical studies of projectile impacts on plain and steel-fibre reinforced concrete[J]. International Journal of Impact Engineering, 2011, 38(2/3): 95-105. doi: 10.1016/j.ijimpeng.2010.10.003 URL
[21]	KONG X Z, FANG Q, CHEN L, et al. A new material model for concrete subjected to intense dynamic loadings[J]. International Journal of Impact Engineering, 2018, 120: 60-78. doi: 10.1016/j.ijimpeng.2018.05.006 URL
[22]	WANG Y, KONG X Z, FANG Q, et al. Modelling damage mechanisms of concrete under high confinement pressure[J]. International Journal of Impact Engineering, 2021(prepublish).
[23]	HUANG X P, KONG X Z, HU J, et al. The influence of free water content on ballistic performances of concrete targets[J]. International Journal of Impact Engineering, 2020, 139:103530.DOI:10.1016/j.ijimpeng.2020.103530.
[24]	高矗, 孔祥振, 方秦, 等. 混凝土中爆炸应力波衰减规律的数值模拟研究[J/OL]. 爆炸与冲击:1-14[2022-04-20]. http://kns.cnki.net/kcms/detail/51.1148.O3.20220411.1502.012.html.
	GAO C, KONG X Z, FANG Q, et al. Numerical investigation on attenuation of stress wave in concrete subjected to explosion[J/OL]. Explosion and Shock Waves: 1-14[2022-04-20]. http://kns.cnki.net/kcms/detail/51.1148.O3.20220411.1502.012.html. (in Chinese)
[25]	王银, 孔祥振, 方秦, 等. 弹体对混凝土材料先侵彻后爆炸损伤破坏效应的数值模拟研究[J/OL]. 爆炸与冲击:1-13[2021-12-28]. http://kns.cnki.net/kcms/detail/51.1148.O3.20210902.1102.004.html.
	WANG Y, KONG X Z, FANG Q, et al. Numerical investigation on damage and failure of concrete targets subjected to projectile penetration followed by explosion[J/OL]. Explosion and Shock Waves:1-13[2021-12-28]. http://kns.cnki.net/kcms/detail/51.1148.O3.20210902.1102.004.html. (in Chinese)
[26]	LS-DYNA. Keyword user’s manual[R]. Livermore, CA, US: Livermore Software Technology Corporation, 2020.
[27]	SCHWER L, MALVAR L J. Simplified concrete modeling with *MAT_CONCRETE_ DAMAGE_REL3[EB/OL]. LS-DYNA Anwenderforum, H-I-49-60, Bamberg, Germany (2005). http://www.geomaterialmodeling.com/pdf/88briefly.pdf
[28]	ZHANG F L, ZHONG R. A parametric study on the high-velocity projectile impact resistance of UHPC using the modified K & C model[J]. Journal of Building Engineering, 2022, 46, DOI:10.1016/J.JOBE.2021.103514.
[29]	任根茂, 吴昊, 方秦, 等. 普通混凝土HJC本构模型参数确定[J]. 振动与冲击, 2016, 35(18): 9-16.
	REN G M, WU H, FANG Q, et al. Determinations of HJC constitutive model parameters for normal strength concrete[J]. Journal of Vibration and Shock, 2016, 35(18): 9-16. (in Chinese)
[30]	张社荣, 宋冉, 王超, 等. 碾压混凝土HJC动态本构模型修正及数值验证[J]. 振动与冲击, 2019, 38(12): 25-31.
	ZHANG S R, SONG R, WANG C, et al. Modification of a dynamic constitutive model-HJC model for roller-compacted concrete and numerical verification[J]. Journal of Vibration and Shock, 2019, 38(12): 25-31. (in Chinese)
[31]	ABDEL-KADER M. Modified settings of concrete parameters in RHT model for predicting the response of concrete panels to impact[J]. International Journal of Impact Engineering, 2019, 132(OCT.):103312.1-103312.18. DOI:10.1016/j.ijimpeng.2019.06.001.
[32]	ABDEL-KADER M. Numerical predictions of the behaviour of plain concrete targets subjected to impact[J]. International Journal of Protective Structures, 2018, 9(3):204141961875910.DOI:10.1177/2041419618759109.
[33]	KONG X Z, FANG Q, ZHANG J H, et al. Numerical prediction of dynamic tensile failure in concrete by a corrected strain-rate dependent nonlocal material model[J]. International Journal of Impact Engineering, 2020, 137(Mar.):103445.1-103445.18. DOI:10.1016/j.ijimpeng.2019.103445.
[34]	吴赛, 赵均海, 张冬芳, 等. 自由空气中爆炸冲击波的数值分析[J]. 工程爆破, 2019, 25(3):1-6,31.
	WU S, ZHAO J H, ZHANG D F, et al. Numerical analysis of explosion wave in free air[J]. Engineering Blasting, 2019, 25(3): 1-6,31. (in Chinese)
[35]	王新颖, 王树山, 王绍慧, 等. 典型水中战斗部炸药装药跌落撞击响应特性[J]. 兵工学报, 2021, 42(增刊1):33-39.
	WANG X Y, WANG S S, WANG S H, et al. Drop impact response characteristics of typical explosive charge in underwater warhead[J]. Acta Armamentarii, 2021, 42(S1): 33-39. (in Chinese)

A	B	N	p_lock/GPa	K₁/GPa	K₂/GPa	K₃/GPa
0.28	1.85	0.84	1.21	12	135	698
D₁	D₂	EFMIN	C
0.04	1.0	0.01	0.006

A	B	N	p_lock/GPa	K₁/GPa	K₂/GPa	K₃/GPa
0.28	1.85	0.84	1.21	12	135	698
D₁	D₂	EFMIN	C
0.04	1.0	0.01	0.006