超高性能混凝土临空板接触爆炸破坏效应实验研究

魏久淇; 李磊; 王世合; 张春晓; 曹少华; 高杰

doi:10.11883/bzycj-2021-0174

超高性能混凝土临空板接触爆炸破坏效应实验研究

doi: 10.11883/bzycj-2021-0174

魏久淇^{1, 2,},
李磊^{1, 2, ,},
王世合^{1, 2},
张春晓^{1, 2},
曹少华^{1, 2},
高杰³

1.
军事科学院国防工程研究院工程防护研究所，河南洛阳 471023
2.
军事科学院国防工程研究院工程防护研究所河南省特种防护材料重点实验室，河南洛阳 471023
3.
河南东骏建材科技有限公司，河南信阳 464200

基金项目: 国家自然科学基金（52078361）

详细信息

作者简介:
魏久淇（1990－　），男，硕士，工程师，weijiuqi61489@163.com

通讯作者:
李　磊（1980－　），男，博士，助理研究员，lileikf@163.com

中图分类号: O383.2；TU928
计量
- 文章访问数: 424
- HTML全文浏览量: 270
- PDF下载量: 106
- 被引次数: 0
出版历程
- 收稿日期: 2021-05-07
- 修回日期: 2021-09-15
- 网络出版日期: 2022-03-10
- 刊出日期: 2022-05-09

Experimental study on local damage effect of ultra-high performance concrete slabs under contact explosion

WEI Jiuqi^{1, 2
,},
LI Lei^{1, 2
, ,},
WANG Shihe^{1, 2},
ZHANG Chunxiao^{1, 2},
CAO Shaohua^{1, 2},
GAO Jie³

1.
Institute of Engineering Protection, Institute of Defense Engineering, Academy of Military Sciences, Luoyang 471023, Henan, China
2.
Henan Key Laboratory of Special Protective Materials, Institute of Engineering Protection, Institute of Defense Engineering, Academy of Military Sciences, Luoyang 471023, Henan, China
3.
Henan Dongjun Building Materials Technology Company, Xinyang 464200, Henan, China

摘要

摘要: 为了研究超高性能混凝土（ultra-high performance concrete, UHPC）的抗接触爆炸性能，开展了C120、C150和C180等3种强度等级共24块UHPC临空板的接触爆炸实验，定量分析了不同药量时典型配筋与不配筋靶板的局部破坏特征，得到了UHPC的爆炸临界震塌系数、压缩系数和成坑系数。结果表明：相同药量下，UHPC板的正面破坏程度随材料强度的提升而减轻；强度越高，爆炸成坑系数和压缩系数越小，抗爆性能越好；配筋率较低时，钢筋对UHPC板正面爆坑尺寸及背面震塌破坏程度影响较小，但对板的整体变形起到了一定的减轻作用，能够减小板底的剩余挠度和裂缝宽度；C150靶板的爆炸临界震塌系数最小，不大于0.251 m/kg^1/3，C120和C180靶板的爆炸临界震塌系数相近，不大于0.285 m/kg^1/3。在设计、使用纤维含量较高的大尺寸UHPC构件时，应特别关注由纤维分布方向性引起的材料各向异性和结构力学性能的变化。
- 超高性能混凝土 /
- 接触爆炸 /
- 局部破坏 /
- 临界震塌 /
- 压缩破坏
Abstract: In order to study the contact explosion resistance of ultra-high performance concrete (UHPC), 24 contact explosion experiments were conducted. The target slabs were cast in UHPC with or without reinforcement, and the compressive strength grades of the UHPCs were C120, C150 and C180. The slabs were laid on supporting ring beams and the back faces of the slabs were free. The TNT was placed on the center of the front face. The size of the target slab was 1.5 m×1.5 m×0.3 m, and the main reinforcements were $\varnothing $12 HRB400 with 200 mm×200 mm grid distance. Based on the experiments, the local failure characteristics of typical reinforced and unreinforced target slabs under the shock of different explosive weights were quantitatively analyzed, and the critical collapse coefficient, compression coefficient and explosion crater coefficient of the UHPC slabs were obtained. The results show that, at the same explosive weight, the damage degree of the UHPC slabs decreases with the compressive strength. The higher the compressive strength, the smaller the compression coefficient and the explosion crater coefficient. When the reinforcement ratio is low, it has little effect on the front crater size and the back collapse damage degree of the UHPC slab, but has a certain role in reducing the residual deflection and crack width at the bottom of the slab. For the UHPCs in this paper, the critical collapse coefficient of the C150 slap is the smallest, no more than 0.251 m/kg^1/3; and the C120 slap and C180 slap are similar, no more than 0.285 m/kg^1/3. The critical collapse coefficients of the C180 UHPC is not the smallest because there are more steel fibers in the horizontal direction than in the vertical direction. When designing or using large size UHPC structures with high fiber content, special attention should be paid to the material anisotropy and the changes in structural mechanical properties due to the directivity of the fiber distribution.
- ultra-high performance concrete /
- contact explosion /
- local failure effect /
- critical collapse /
- compression failure

HTML全文

图 1 实验装置

Figure 1. The experimental setup

下载: 全尺寸图片幻灯片

图 2 UHPC板的典型局部破坏

Figure 2. Typical local damage of the UHPC slabs

下载: 全尺寸图片幻灯片

图 3 压缩系数的拟合结果

Figure 3. Fitting results of the compressibility coefficients

下载: 全尺寸图片幻灯片

图 4 成坑系数的拟合结果

Figure 4. Fitting results of the crater coefficients

下载: 全尺寸图片幻灯片

表 1 UHPC板的参数

Table 1. Parameters of the UHPC slabs

材料	抗压强度/MPa	抗拉强度/MPa	数量
C120	125.2	7.12	5
PC120	125.2	7.12	5
C150	157.7	8.18	5
PC150	157.7	8.18	5
C180	182.8	9.34	4

下载: 导出CSV

表 2 试件的破坏状况

Table 2. Damage states of the slabs

试件	药量/kg	正面		背面
试件	药量/kg	直径/m	深度/m	剩余挠度/mm	震塌坑尺寸/mm	裂缝分布
C120-1	1.6	0.320	0.088	16	—	12条，最宽3.5 mm
C120-2	1.8	0.315	0.092	28	—	14条，最宽9.9 mm
C120-3	1.9	0.340	0.094	—	90×140深15	14条
C120-4	2.0	0.330	0.095	—	350×250深60	17条
C120-5	2.4	0.375	0.099	—	620×780深105	18条
PC120-1	1.6	0.328	0.092	10	—	11条，最宽1.9 mm
PC120-2	2.0	0.360	0.098	28	—	13条，最宽2.4 mm
PC120-3	2.1	0.355	0.100	—	40×50深30	15条
PC120-4	2.2	0.350	0.099	—	70×105深35	16条
PC120-5	2.4	0.360	0.102	—	100×200深60	16条
C150-1	1.6	0.285	0.076	8	—	6条，最宽2.0 mm
C150-2	2.0	0.305	0.080	30	—	11条，最宽3.6 mm
C150-3	2.4	0.360	0.084	49	—	13条，最宽7.5 mm
C150-4	2.6	0.355	0.088	—	380×630深70	13条
C150-5	2.8	0.345	0.092	—	690×900深130	15条
PC150-1	1.6	0.273	0.079	9	—	8条，最宽2.0 mm
PC150-2	2.0	0.320	0.080	15	—	11条，最宽2.2 mm
PC150-3	2.4	0.343	0.083	22	—	14条，最宽3.8 mm
PC150-4	2.7	0.360	0.088	—	230×470深55	14条
PC150-5	3.0	0.370	0.092	—	370×460深65	14条
C180-1	1.8	0.273	0.070	22	—	10条，最宽3.54 mm
C180-2	2.0	0.285	0.075	—	150×145深50	12条
C180-3	2.4	0.305	0.078	—	650×735深95	13条
C180-4	2.8	0.340	0.086	—	705×895深110	15条

下载: 导出CSV

表 3 靶板正面的爆坑参数

Table 3. The front face anti-explosion parameters of the slabs

材料	k/(m·kg^−1/3)	K_a/(m·kg^−1/3)
C40钢筋混凝土^[21-22]	0.433	0.13
C100钢纤维混凝土^[21-22]	0.333	0.12
C120超高性能混凝土	0.265~0.269	0.113~0.114
C150超高性能混凝土	0.243	0.097~0.098
C180超高性能混凝土	0.222	0.094

下载: 导出CSV

表 4 UHPC靶板的临界震塌系数

Table 4. Critical collapse factors of the UHPC slabs

材料	K_z0/(m·kg^−1/3)
C120	0.278~0.285
PC120	0.267~0.272
C150	0.243~0.251
PC150	0.238~0.251
C180	0.272~0.285

下载: 导出CSV

参考文献(24)

[1]	DE LARRARD F, SEDRAN T. Optimization of ultra-high-performance concrete by the use of a packing model [J]. Cement and Concrete Research, 1994, 24(6): 997–1009. DOI: 10.1016/0008-8846(94)90022-1.
[2]	SOBUZ H R, VISINTIN P, MOHAMED ALI M S, et al. Manufacturing ultra-high performance concrete utilising conventional materials and production methods [J]. Construction and Building Materials, 2016, 111: 251–261. DOI: 10.1016/j.conbuildmat.2016.02.102.
[3]	YANG S L, MILLARD S G, SOUTSOS M N, et al. Influence of aggregate and curing regime on the mechanical properties of ultra-high performance fibre reinforced concrete (UHPFRC) [J]. Construction and Building Materials, 2009, 23(6): 2291–2298. DOI: 10.1016/j.conbuildmat.2008.11.012.
[4]	CAMILETTI J, SOLIMAN A M, NEHDI M L. Effects of nano- and micro-limestone addition on early-age properties of ultra-high-performance concrete [J]. Materials and Structures, 2013, 46(6): 881–898. DOI: 10.1617/s11527-012-9940-0.
[5]	WANG D H, SHI C J, WU Z M, et al. A review on ultra high performance concrete: part Ⅱ. hydration, microstructure and properties [J]. Construction and Building Materials, 2015, 96: 368–377. DOI: 10.1016/j.conbuildmat.2015.08.095.
[6]	SHI C J, WANG D H, WU L M, et al. The hydration and microstructure of ultra high-strength concrete with cement-silica fume-slag binder [J]. Cement and Concrete Composites, 2015, 61: 44–52. DOI: 10.1016/j.cemconcomp.2015.04.013.
[7]	WILLE K, NAAMAN A E, EL-TAWIL S, et al. Ultra-high performance concrete and fiber reinforced concrete: achieving strength and ductility without heat curing [J]. Materials and Structures, 2012, 45(3): 309–324. DOI: 10.1617/s11527-011-9767-0.
[8]	YAZICI H, YARDIMCI M Y, AYDIN S, et al. Mechanical properties of reactive powder concrete containing mineral admixtures under different curing regimes [J]. Construction and Building Materials, 2009, 23(3): 1223–1231. DOI: 10.1016/j.conbuildmat.2008.08.003.
[9]	ABBAS S, SOLIMAN A M, NEHDI M L. Exploring mechanical and durability properties of ultra-high performance concrete incorporating various steel fiber lengths and dosages [J]. Construction and Building Materials, 2015, 75: 429–441. DOI: 10.1016/j.conbuildmat.2014.11.017.
[10]	KHOSRAVANI M R, WAGNER P, FRÖHLICH D, et al. Dynamic fracture investigations of ultra-high performance concrete by spalling tests [J]. Engineering Structures, 2019, 201: 109844. DOI: 10.1016/j.engstruct.2019.109844.
[11]	GUO Y B, GAO G F, JING L, et al. Quasi-static and dynamic splitting of high-strength concretes-tensile stress-strain response and effects of strain rate [J]. International Journal of Impact Engineering, 2019, 125: 188–211. DOI: 10.1016/j.ijimpeng.2018.11.012.
[12]	戎志丹, 孙伟. 粗集料对超高性能水泥基材料动态力学性能的影响 [J]. 爆炸与冲击, 2009, 29(4): 361–366. DOI: 10.11883/1001-1455(2009)04-0361-06. RONG Z D, SUN W. Influences of coarse aggregate on dynamic mechanical behaviors of ultrahigh-performance cementitious composites [J]. Explosion and Shock Waves, 2009, 29(4): 361–366. DOI: 10.11883/1001-1455(2009)04-0361-06.
[13]	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. DOI: 10.3321/j.issn:1000-0054.2006.06.004. ZHANG X B, YANG X M, CHEN Z Y, et al. Explosion spalling of reinforced concrete slabs with contact detonations [J]. Journal of Tsinghua University (Science and Technology), 2006, 46(6): 765–768. DOI: 10.3321/j.issn:1000-0054.2006.06.004.
[14]	王明洋, 张胜民, 国胜兵. 接触爆炸作用下钢板钢纤维混凝土遮弹层设计方法(Ⅰ) [J]. 爆炸与冲击, 2002, 22(1): 40–45. WANG M Y, ZHANG S M, GUO S B. Design method of steel and steel-fiber concrete shelter plate under contact detonation [J]. Explosion and Shock Waves, 2002, 22(1): 40–45.
[15]	胡金生, 杨秀敏, 周早生, 等. 接触爆炸对底部有土垫层纤维混凝土板破坏效应试验研究 [J]. 爆炸与冲击, 2005, 25(2): 157–162. DOI: 10.11883/1001-1455(2005)02-0157-06. HU J S, YANG X M, ZHOU Z S, et al. Experimental investigation on contact explosion damage effect to fiber reinforced concrete slab with soil bedding [J]. Explosion and Shock Waves, 2005, 25(2): 157–162. DOI: 10.11883/1001-1455(2005)02-0157-06.
[16]	岳松林, 王明洋, 张宁, 等. 混凝土板在接触爆炸作用下的震塌和贯穿临界厚度计算方法 [J]. 爆炸与冲击, 2016, 36(4): 472–482. DOI: 10.11883/1001-1455(2016)04-0472-11. YUE S L, WANG M Y, ZHANG N, et al. A method for calculating critical spalling and perforating thicknesses of concrete slabs subjected to contact explosion [J]. Explosion and Shock Waves, 2016, 36(4): 472–482. DOI: 10.11883/1001-1455(2016)04-0472-11.
[17]	LI J, WU C Q, 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. DOI: 10.1016/j.ijimpeng.2016.02.007.
[18]	葛涛, 潘越峰, 谭可可, 等. 活性粉末混凝土抗冲击性能研究 [J]. 岩石力学与工程学报, 2007, 26(S1): 3553–3557. DOI: 10.3321/j.issn:1000-6915.2007.z1.148. GE T, PAN Y F, TAN K K, et al. Study on resistance of reactive powder concrete to impact [J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26(S1): 3553–3557. DOI: 10.3321/j.issn:1000-6915.2007.z1.148.
[19]	戎志丹, 孙伟, 张云升, 等. 超高性能钢纤维混凝土抗二次接触爆炸性能研究 [J]. 华北水利水电大学学报, 2012, 33(6): 1–4. DOI: 10.19760/j.ncwu.zk.2012.06.001. RONG Z D, SUN W, ZHANG Y S, et al. Study on the characteristics of ultra-high performance steel fiber reinforced concrete under the second explosion [J]. Journal of North China Institute of Water Conservancy and Hydroelectric Power, 2012, 33(6): 1–4. DOI: 10.19760/j.ncwu.zk.2012.06.001.
[20]	WU H, HU F, FANG Q, et al. A comparative study for the impact performance of shaped charge JET on UHPC targets [J]. Defence Technology, 2019, 15(4): 506–518. DOI: 10.1016/j.dt.2019.04.005.
[21]	王年桥. 防护结构计算原理与设计 [M]. 2版. 南京: 解放军理工大学工程兵工程学院, 2002.
[22]	张云升, 张文华, 刘建忠. 超高性能水泥基复合材料 [M]. 北京: 科学出版社, 2014.
[23]	郑全平, 牛小玲, 汪剑辉, 等. 不同钢纤维掺量C30 RC板爆炸震塌试验研究 [J]. 防护工程, 2013, 35(1): 16–20. ZHENG Q P, NIU X L, WANG J H, et al. Experimental investigation into explosion spalling of C30 RC plates with different steel fiber content [J]. Protective Engineering, 2013, 35(1): 16–20.
[24]	郑全平, 钱七虎, 周早生, 等. 钢筋混凝土震塌厚度计算公式对比研究 [J]. 工程力学, 2003, 20(3): 47–53. DOI: 10.3969/j.issn.1000-4750.2003.03.009. ZHENG Q P, QIAN Q H, ZHOU Z S, et al. Comparative analysis of scabbing thickness estimation of reinforced concrete structures [J]. Engineering Mechanics, 2003, 20(3): 47–53. DOI: 10.3969/j.issn.1000-4750.2003.03.009.