Damage grades of reinforced concrete bent structures against blast

ZHANG Di; YANG Jun; ZENG Dan; CHEN Tainian; GAO Jinming; TANG Yu

doi:10.11883/bzycj-2020-0012

Volume 40 Issue 12

Dec. 2020

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ZHANG Di, YANG Jun, ZENG Dan, CHEN Tainian, GAO Jinming, TANG Yu. Damage grades of reinforced concrete bent structures against blast[J]. Explosion And Shock Waves, 2020, 40(12): 121405. doi: 10.11883/bzycj-2020-0012

Citation:

ZHANG Di, YANG Jun, ZENG Dan, CHEN Tainian, GAO Jinming, TANG Yu. Damage grades of reinforced concrete bent structures against blast[J]. Explosion And Shock Waves, 2020, 40(12): 121405. doi: 10.11883/bzycj-2020-0012

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Damage grades of reinforced concrete bent structures against blast

doi: 10.11883/bzycj-2020-0012

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2.
China Ordnance Engineering and Safety Technology Research Institute, Beijing 100053, China

Received Date: 2020-01-07
Rev Recd Date: 2020-05-21
Publish Date: 2020-12-05

Abstract

Abstract

To study the failure law of reinforced concrete bent structures under large equivalent explosions, the damage grades of the bent structures against blast were numerically calculated based on the explosion test with the maximum equivalent of 3 t TNT. The load parameters and structural dimensions of the 1/2 scaled model were obtained through dimensional analysis. Based on the Abaqus finite element software, the CONWEP method was used to achieve the blast loading. The failure modes of the structures, under the explosion loads with TNT equivalent 0.5 t and blast distance 33 m as well as TNT equivalent 3 t and blast distance 33 m, were calculated, respectively, and compared with the test results. Further, the failure patterns of the scale model under different overpressures and impulses were calculated by controlling the TNT equivalent and blast distance. The research results show that the middle column of the bent structure is prone to damage in the form of overall overturning under a lateral blast load; the calculated failure morphologies are in good agreement with the experimental ones, and the maximum relative errors of the characteristic displacements and characteristic corners are 5.6% and 4.6%, respectively. The overturning angle of the load-bearing column was used as the basis for the damage-grade division, and the calculated results were divided into three damage levels. The fitted overpressure-impulse and equivalent-distance curves can be used in the design of safety distance and warehouse capacity and the estimation of the damage degree of accidental explosion.
- reinforced concrete bent structure,
- blast,
- damage grade,
- overpressure-impulse curve,
- scaled model,
- CONWEP

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References(25)

References

[1]	Department of Defense. Design of buildings to resist progressive collapse: UFC4-023-03 [S]. Washington: U S Department of Defense, 2005: 1−232.
[2]	WANG W, ZHANG D, LU F Y, et al. Experimental study on scaling the explosion resistance of a one-way square reinforced concrete slab under a close-in blast loading [J]. International Journal of Impact Engineering, 2012, 49: 158–164. DOI: 10.1016/j.ijimpeng.2012.03.010.
[3]	YAO S J, ZHANG D, LU F Y, et al. A combined experimental and numerical investigation on the scaling laws for steel box structures subjected to internal blast loading [J]. International Journal of Impact Engineering, 2017, 102: 36–46. DOI: 10.1016/j.ijimpeng.2016.12.003.
[4]	武海军, 黄风雷, 陈利, 等. 动能弹侵彻钢筋混凝土相似性分析 [J]. 兵工学报, 2007, 28(3): 276–280. DOI: 10.3321/j.issn: 1000-1093.2007.03.005. WU H J, HUANG F L, CHEN L, et al. Similarity law analyses of penetration behavior in reinforced concrete [J]. Acta Armamentarii, 2007, 28(3): 276–280. DOI: 10.3321/j.issn: 1000-1093.2007.03.005.
[5]	杨亚东, 李向东, 王晓鸣, 等. 钢筋混凝土结构内爆炸相似模型试验研究 [J]. 南京理工大学学报, 2016, 40(2): 135–141. DOI: 10.14177/j.cnki.32-1397n.2016.40.02.002. YANG Y D, LI X D, WANG X M, et al. Experimental study on similarity model of reinforced concrete structure under internal explosion [J]. Journal of Nanjing University of Science and Technology, 2016, 40(2): 135–141. DOI: 10.14177/j.cnki.32-1397n.2016.40.02.002.
[6]	JAYASOORIYA R, THAMBIRATNAM D P, PERERA N J, et al. Blast and residual capacity analysis of reinforced concrete framed buildings [J]. Engineering Structures, 2011, 33(12): 3483–3495. DOI: 10.1016/j.engstruct.2011.07.011.
[7]	CARTA G, STOCHINO F. Theoretical models to predict the flexural failure of reinforced concrete beams under blast loads [J]. Engineering Structures, 2013, 49: 306–315. DOI: 10.1016/j.engstruct.2012.11.008.
[8]	SHI Y C, HAO H, Li Z X. Numerical derivation of pressure–impulse diagrams for prediction of RC column damage to blast loads [J]. International Journal of Impact Engineering, 2008, 35(11): 1213–1227. DOI: 10.1016/j.ijimpeng.2007.09.001.
[9]	师燕超. 爆炸荷载作用下钢筋混凝土结构的动态响应行为与损伤破坏机理[D]. 天津: 天津大学, 2009: 1−8.
[10]	汪维. 钢筋混凝土构件在爆炸载荷作用下的毁伤效应及评估方法研究[D]. 长沙: 国防科学技术大学, 2012: 1−7.
[11]	WANG W, ZHANG D, LU F Y, et al. The influence of load pulse shape on pressure-impulse diagrams of one-way RC slabs [J]. Structural Engineering and Mechanics, 2012, 42(3): 363–381. DOI: 10.12989/sem.2012.42.3.363.
[12]	倪晋峰. 单层球面网壳基于CONWEP外爆响应分析及试验设计[D]. 哈尔滨: 哈尔滨工业大学, 2012: 13−19.
[13]	中华人民共和国住房和城乡建设部. 混凝土结构设计规范: GB 50010—2010 [S]. 北京: 中国建筑工业出版社, 2017: 1−284.
[14]	中华人民共和国住房和城乡建设部. 钢结构设计标准规范:GB 50017—2017 [S]. 北京: 中国建筑工业出版社, 2018: 1−226.
[15]	任光. 爆炸载荷下建构筑物连续倒塌数值模拟[D]. 北京: 北京理工大学, 2016: 1−6.
[16]	郭春, 彭振斌. 建筑抗震中单桩摩阻力动力效应分析 [J]. 湖南大学学报(自然科学版), 2015, 42(3): 57–62. DOI: 10.16339/j.cnki.hdxbzkb.2015.03.009. GUO C, PENG Z B. Analysis for the dynamic effect of friction forces of single pile [J]. Journal of Hunan University (Natural Sciences), 2015, 42(3): 57–62. DOI: 10.16339/j.cnki.hdxbzkb.2015.03.009.
[17]	李世平, 张珂, 程龙. 基于ABAQUS软件研究载体桩在焦作某工程应用 [J]. 水利与建筑工程学报, 2018, 16(1): 28–35. DOI: 10.3969/j.issn.1672-1144.2018.01.006. LI S P, ZHANG K, CHENG L. Research on application of ram-compacted piles with bearing base in Jiaozuo based on ABAQUS software [J]. Journal of Water Resources and Architectural Engineering, 2018, 16(1): 28–35. DOI: 10.3969/j.issn.1672-1144.2018.01.006.
[18]	IMBALZANO G, LINFORTH S, NGO T D, et al. Blast resistance of auxetic and honeycomb sandwich panels: comparisons and parametric designs [J]. Composite Structures, 2018, 183: 242–261. DOI: 10.1016/j.compstruct.2017.03.018.
[19]	CASTEDO R, SEGARRA P, ALAÑON A, et al. Air blast resistance of full-scale slabs with different compositions: numerical modeling and field validation [J]. International Journal of Impact Engineering, 2015, 86: 145–156. DOI: 10.1016/j.ijimpeng.2015.08.004.
[20]	SOUTIS C, MOHAMED G, HODZIC A. Modelling the structural response of GLARE panels to blast load [J]. Composite Structures, 2011, 94(1): 267–276. DOI: 10.1016/j.compstruct.2011.06.014.
[21]	DU H, LI Z X. Numerical analysis of dynamic behavior of RC slabs under blast loading [J]. Transactions of Tianjin University, 2009, 15(1): 61–64. DOI: 10.1007/s12209-009-0012-7.
[22]	杨军, 张帝, 任光. 基于CONWEP动态加载的建筑物爆破拆除数值模拟 [J]. 工程爆破, 2016, 22(5): 1–6, 91. DOI: 10.3969/j.issn.1006-7051.2016.05.001. YANG J, ZHANG D, REN G. Numerical simulation of blasting demolition of buildings and structures based on CONWEP dynamic loading [J]. Engineering Blasting, 2016, 22(5): 1–6, 91. DOI: 10.3969/j.issn.1006-7051.2016.05.001.
[23]	Department of Defense. Structures to resist the effects of accidental explosions: UFC3-340-02[S]. Washington: U S Department of Defense, 2008: 1042−1280.
[24]	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: 100−104.
[25]	WEI X Y, HUANG T, LI N. Numerical derivation of pressure-impulse diagrams for unreinforced brick masonry walls [J]. Advanced Materials Research, 2011, 368-373: 1435–1439. DOI: 10.4028/www.scientific.net/AMR.368-373.1435.