砌体填充墙的抗爆性能

范俊余; 方秦; 陈力; 张亚栋

doi:10.11883/1001-1455(2014)01-0059-08

砌体填充墙的抗爆性能

doi: 10.11883/1001-1455(2014)01-0059-08

解放军理工大学国防工程学院，江苏南京 210007

基金项目: 国家自然科学基金项目（51208509，51021001，51008306）；国家重点基础研究发展计划（973计划）项目（2012CB026204）

详细信息

作者简介:
范俊余(1978—), 女, 博士, 讲师

通讯作者:
Fan Jun-yu, fjy7361@sina.com

中图分类号: O383.2; TU362
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- 被引次数: 0
出版历程
- 收稿日期: 2012-08-20
- 修回日期: 2013-01-27
- 刊出日期: 2014-01-25

Anti-blast properties of masonry infill walls

Engineering Institute of Engineering Corps, PLA University of Science and Technology, Nanjing 210007, Jiangsu, China

Funds: Supported by the National Natural Science Foundation of China (51208509, 51021001, 51008306); the National Basic Research Program of China (973 Program) (2012CB026204)

摘要

摘要: 为了揭示砌体填充墙的抗爆破坏机理，在野外实验中，测得了爆炸条件下砌体填充墙上的爆炸荷载及位移，得到了墙的抗爆性能、破坏模式以及碎片的飞散和分布情况。实验结果表明，墙体的破坏模式与荷载的大小有关，其破坏主要由灰缝的破坏引起。结合实验现象，采用分离式建模的精细化数值模拟方法，得到了不同荷载条件下裂缝的发展过程、墙体的边界条件对墙体的破坏模式的影响，确定了墙体不同破坏等级时的药量，进一步说明本文中数值模拟方法的合理性。
- 爆炸力学 /
- 破坏机理 /
- 野外实验 /
- 砌体填充墙 /
- 抗爆 /
- 碎片
Abstract: The field tests were conducted to investigate the failure mechanism of the masonry infill wall under blast loading.The blast loads and the displacements of the wall under shock waves were measured.And the failure modes of the wall were obtained as well as the ejection and distribution of the wall fragments.The experimental results indicate that the failure modes of the wall are dependent mainly on the amplitudes of the blast loads and the collapse of the wall is leaded by the failure of the cement linings.Based on the above tests, the separated numerical models were established by using LS－DYNA to simulate the dynamic response and the damage of the masonry infill wall under blast loading.And the spreads of the cracks in the wall under different blast loads were obtained and the charge weights corresponding to the different failure modes were confirmed.The numerical results agree quite well with the test data.The boundary conditions can obviously affect the failure modes of the wall.
- mechanics of explosion /
- failure mechanism /
- field test /
- masonry infill wall /
- anti-blast /
- fragments

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图 1 实验模型平面布置

Figure 1. Position sketch of the experimental model

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图 2 实验模型

Figure 2. Photo of the experimental model

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图 3 实验模型的施工

Figure 3. Construction of the experimental model

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图 4 压力测点布置

Figure 4. Distribution of pressure gauges

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图 5 位移测点布置

Figure 5. Distribution of displacement gauges

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图 6 墙上测点的压力曲线

Figure 6. Overpressure curves at gauge points

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图 7 第5炮后实验墙的破坏形态

Figure 7. Failure form of the test wall for No.5

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图 8 第11炮后实验墙的破坏形态

Figure 8. Failure form of the test wall for No.11

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图 9 第12炮后实验墙的破坏形态

Figure 9. Failure form of the test wall for No.12

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图 10 碎片的分布情况

Figure 10. Distribution of the fragment

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图 11 有限元模型及网格划分

Figure 11. Finite element model

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图 12 第3炮各测点的位移曲线

Figure 12. Displacement curves at gauge points for No.3

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图 13 Q＝3.9kg时墙的损伤破坏

Figure 13. Damage of the wall for Q＝3.9kg

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图 14 Q＝37kg时墙的损伤破坏

Figure 14. Damage of the wall for Q＝37kg

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图 15 墙体的严重破坏

Figure 15. Severe damage of the wall

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图 16 Q＝58kg时墙的损伤破坏过程

Figure 16. Destory process of the wall for Q＝58kg

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表 1 装药量

Table 1. Explosive quantities

No.	Q/kg	Z/(m·kg^-1/3)
1	0.2	10.00
2	3.9	3.72
3	3.9	3.72
4	8.6	2.87
5	34.2	1.81
6	4.8	3.48
7	4.8	3.38
8	4.8	3.48
9	4.8	3.48
10	10.7	2.66
11	21.2	2.12
12	30.0	1.89

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表 2 第1炮各测点的压力峰值和冲量

Table 2. The peak pressures and impulses of No.1

测点	p_m/Pa		I/(MPa·ms)
测点	实验	计算	实验	计算
P1	28.02	29.9	34.757	33.25
P2	28.80	30.3	42.193	33.75
P3	29.40	30.6	43.726	34.14
P4	30.00	31.0	45.560	34.40
P5	-	31.2	-	34.53
P6	29.41	30.6	45.706	34.09
P7	28.21	30.5	36.857	34.18
P8	29.73	30.3	39.543	33.74

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表 3 第2炮各测点的压力峰值和冲量

Table 3. The peak pressures and impulses of No.2

测点	p_m/kPa		I/(MPa·ms)
测点	实验	计算	实验	计算
P1	181.5	181	256.0	259.8
P2	-	185	-	271.8
P3	181.0	189	264.1	275.6
P4	-	191	-	278.2
P5	240.0	192	306.5	279.6
P6	231.0	188	303.4	275.2
P7	202.0	187	277.7	273.9
P8	218.5	185	235.4	271.9

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参考文献(10)

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