爆炸荷载下钢筋混凝土梁的变形和破坏

李猛深; 李杰; 李宏; 施存程; 张宁

doi:10.11883/1001-1455(2015)02-0177-07

爆炸荷载下钢筋混凝土梁的变形和破坏

doi: 10.11883/1001-1455(2015)02-0177-07

李猛深^{1, 2},
李杰^{2, 3, ,},
李宏¹,
施存程⁴,
张宁²

1.
沈阳军区司令部工程科研设计所，辽宁沈阳 110162
2.
解放军理工大学爆炸冲击防灾减灾国家重点实验室，江苏南京 210007
3.
南京理工大学机械工程学院，江苏南京 210009
4.
第二炮兵指挥学院，湖北武汉 430012

基金项目: 国家自然科学基金青年科学基金项目(51308543);中国博士后科学基金项目(2014M552688)

详细信息

作者简介:
李猛深(1984—), 男, 博士, 工程师

通讯作者:
李杰, lijierf@163.com

中图分类号: O383.2
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- 文章访问数: 4351
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- 被引次数: 0
出版历程
- 收稿日期: 2013-07-10
- 修回日期: 2014-01-15
- 刊出日期: 2015-03-25

Deformation and failure of reinforced concrete beams under blast loading

Li Meng-shen^{1, 2},
Li Jie^{2, 3
, ,},
Li Hong¹,
Shi Cun-cheng⁴,
Zhang Ning²

1.
Engineering Research and Designing Institute, Shenyang Military Area Command, Shenyang 110162, Liaoning, China
2.
State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, PLA University of Science and Technology, Nanjing 210007, Jiangsu, China
3.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
4.
The Second Artillery Command College, Wuhan 430012, Hubei, China

摘要

摘要: 利用爆炸压力模拟器进行钢筋混凝土简支梁爆炸冲击实验，详细介绍了实验设计，通过实验系统分析了钢筋混凝土(RC)梁变形破坏特征以及钢筋作用机理和对变形破坏的影响，并建立了RC梁的分离式有限元模型，利用LS-DYNA分析了实验过程，对计算结果与实验结果进行了比较，分析了误差产生的原因，得到了爆炸冲击荷载作用下RC梁的损伤破坏特征和机理，可为毁伤评估和结构抗爆设计提供参考。
- 爆炸力学 /
- 破坏特征 /
- 有限元 /
- 钢筋混凝土梁 /
- 爆炸荷载
Abstract: With explosion pressure simulator, blast experiments were carried out to investigate the deformation and damage of concrete (RC) beams. The experimental design and parameters are described in detail. The experimental result shows the failure characteristics of RC beams and the role that rebars act. With LS-DYNA, three-dimensional separated finite element models of RC beams were established to simulate the experiment. The simulation and experimental results are contrasted to investigate the damage mechanism and failure characteristics. The article also figures out the reason of simulation errors. The research provides reference for damage assessment and anti-blast design.
- mechanics of explosion /
- failure characteristics /
- finite element /
- reinforced concrete beam /
- blast loading

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图 1 实验装置示意图

Figure 1. Sketch of the experiment system

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图 2 钢筋混凝土梁尺寸与配筋

Figure 2. Dimension and bar arrangement of RC beams

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图 3 应变片布置

Figure 3. Strain gauges arrangement

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图 4 实测爆炸荷载曲线

Figure 4. Experimental blast loading curves

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图 5 RC梁的破坏情况

Figure 5. Damaged RC beams

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图 6 低配箍RC梁的破坏形态^[5]

Figure 6. Failure modes of RC beams with low strrups arrangement

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图 7 RC梁侧面的最终破坏形态

Figure 7. Failures modes of RC beam side

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图 8 实验与数值模拟的应变曲线

Figure 8. Strain curves of experimental and numerical simulation

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表 1 破坏现象综合描述

Table 1. Description of failure phenomenon

编号	p_r/kPa	p_e/kPa	现象描述
BS	211	454	严重破坏：横向裂缝集中在跨中，跨中裂缝发展到梁顶处，宽度约2 cm
BM	304	500	破坏：横向裂缝集中在跨中，跨中裂缝发展到梁顶处，宽度约1.5 cm
BL	541	522	未破坏：沿梁长出现横向裂缝，裂缝发展到梁高约3/4处

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表 2 钢筋计算参数

Table 2. Calculation parameters of reinforcing bar

材料	A/MPa	B/MPa	n	C
HPB235	329.11	190.44	0.26	0.016
HRB335	386.70	220.02	0.30	0.018
HRB400	404.00	232.40	0.31	0.018

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表 3 跨中位移

Table 3. Midspan displacements

编号	d_e/mm	d_n/mm	δ/%
BS1	65	59	9.2
BM2	20	19	5.0
BL4	8	7	12.5

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参考文献(14)

[1]	高康华, 金丰年, 王德荣, 等.建筑物内爆炸荷载研究综述[J].中国工程科学, 2013, 15(5): 59-64. http://d.wanfangdata.com.cn/Periodical/zggckx201305010 Gao Kang-hua, Jin Feng-nian, Wang De-rong, et al. Review on internal explosion loading of building[J]. Engineering Science, 2013, 15(5): 59-64. http://d.wanfangdata.com.cn/Periodical/zggckx201305010
[2]	师燕超, 李忠献.爆炸荷载作用下钢筋混凝土结构破坏倒塌分析研究进展[J].土木工程学报, 2010, 43(增刊): 83-91. Shi Yan-chao, Li Zhong-xian. State-of-the-art in damage and collapse analysis of RC structures under blast loading[J]. China Civil Engineering Journal, 2013, 43(suppl): 83-91.
[3]	陈肇元.钢筋混凝土结构构件在冲击荷载下的性能[M].北京: 清华大学出版社, 1986.
[4]	张想柏, 杨秀敏, 陈肇元, 等.接触爆炸钢筋混凝土板的震塌效应[J].清华大学学报(自然科学版), 2006, 46(6): 765-768. http://d.wanfangdata.com.cn/Periodical/qhdxxb200606004 Zhang Xiang-bai, Yang Xiu-min, Chen Zhao-yuan, et al. Explosion spalling of reinforced concrete slabs with contact detonations[J]. Journal of Tsinghua University(Science and Technology), 2006, 46(6): 765-768. http://d.wanfangdata.com.cn/Periodical/qhdxxb200606004
[5]	匡志平, 杨秋华, 崔满.爆炸荷载下钢筋混凝土梁的实验研究和破坏形态[J].同济大学学报:自然科学版, 2009, 37(9): 1153-1156. http://www.cqvip.com/Main/Detail.aspx?id=31584921 Kuang Zhi-ping, Yang Qiu-hua, Cui Man. Experiment research and failure modes analyses of RC-beams under blast loading[J]. Journal of Tongji University: Natural Science Edition, 2009, 37(9): 1153-1156. http://www.cqvip.com/Main/Detail.aspx?id=31584921
[6]	Krauthammer T, Shahriar S, Shanaa H M. Response of reinforced concrete elements to severe impulsive loads[J]. Journal of Structural Engineering, 1990, 116(4): 1061-1079. https://trid.trb.org/view/308168
[7]	Krauthammer T, Assadi-Lamouki A, Shanaa H M. Analysis of impulsively loaded reinforced concrete structural elements(Ⅱ): Implementation[J]. Computers and Structures, 1993, 48(5): 851-860. https://www.sciencedirect.com/science/article/pii/004579499390508B
[8]	方秦, 柳锦春, 张亚栋, 等.爆炸荷载作用下钢筋混凝土梁破坏形态有限元分析[J].工程力学, 2001, 18(2): 1-8. Fang Qin, Liu Jin-chun, Zhang Ya-dong, et al. Finite element analysis of failure modes of blast-loading RC beams[J]. Engineering Mechanics, 2001, 18(2): 1-8.
[9]	柳锦春, 方秦, 龚自明, 等.爆炸荷载作用下钢筋混凝土梁的动力响应及破坏形态分析[J].爆炸与冲击, 2003, 23(1): 25-30. http://www.bzycj.cn/article/id/10014 Liu Jin-chun, Fang Qin, Gong Zi-ming, et al. Analysis of dynamic responses and failure modes of RC beams under blast loading[J]. Explosion and Shock Waves, 2003, 23(1): 25-30. http://www.bzycj.cn/article/id/10014
[10]	方秦, 吴平安.爆炸荷载作用下影响RC梁破坏形态的主要因素分析[J].计算力学学报, 2003, 20(1): 39-42. Fang Qin, Wu Ping-an. Main factors affecting failure modes of blast loaded RC beams[J]. Chinese Journal of Computational Mechanics, 2003, 20(1): 39-42.
[11]	Barbato M. Efficient finite element modeling of reinforced concrete beams retro fitted with fibre reinforced polymers[J]. Computers and Structures, 2009, 87(3/4): 167-176. https://www.sciencedirect.com/science/article/pii/S0045794908002502
[12]	GB 50038-2005人民防空地下室设计规范[S].北京: 中国建筑工业出版社, 2005.
[13]	Мяновский К М. Механизм трещинообразования железобетонных элементов с дисперсным армирова-нием при растяжении[M]. ВЦП НТЛиД, 1979.
[14]	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.