南京航空航天大学 民航学院, 江苏 南京 211106
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收稿:2023-08-09,
网络出版:2024-01-03,
纸质出版:2023-12-08
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柳锦春, 王钰颖, 孙妮. 喷涂聚脲加固双向砌体墙抗燃气爆炸性能数值分析[J]. 兵工学报, 2023,44(S1):138-143.
Jinchun LIU, Yuying WANG, Ni SUN. Numerical Analysis of Gas Explosion Resistance of Two-way Masonry Walls Strengthened by Spraying Polyurea[J]. Acta Armamentarii, 2023, 44(S1): 138-143.
柳锦春, 王钰颖, 孙妮. 喷涂聚脲加固双向砌体墙抗燃气爆炸性能数值分析[J]. 兵工学报, 2023,44(S1):138-143. DOI: 10.12382/bgxb.2023.0733.
Jinchun LIU, Yuying WANG, Ni SUN. Numerical Analysis of Gas Explosion Resistance of Two-way Masonry Walls Strengthened by Spraying Polyurea[J]. Acta Armamentarii, 2023, 44(S1): 138-143. DOI: 10.12382/bgxb.2023.0733.
为研究燃气泄爆荷载作用下双向砌体墙的抗爆能力及聚脲对墙体的加固性能
采用有限元动力分析软件LS-DYNA对未加固砌体墙和聚脲迎爆面、背爆面、双面加固的墙体
分别施加荷载峰值大小不同、作用时间均为100ms的均布荷载
进行动态响应和抗爆性能分析。结果表明:未加固墙体在超压峰值为50kPa的燃气爆炸荷载作用下即发生倒塌破坏
其抵抗100ms爆炸冲击荷载的峰值介于40kPa和50kPa之间;相对于迎爆面加固双向墙体
背爆面加固的方式更加经济实用
在50kPa荷载作用下
迎爆面加固的墙体发生开裂倒塌
而背爆面和双面加固墙体分别只有35.3mm和33.6mm的位移
且背部的聚脲涂层能有效防止碎片飞溅。
In order to study the anti-explosion performance of two-way masonry wall and the reinforcement performance of polyurea on wall under the action of gas explosion
the finite element dynamic analysis software LS-DYNA is used to analyzethe dynamic response andanti-explosion capability of the unreinforced masonry wall and the walls reinforced by spraying the polyurea on the front
back and double-side under uniform loads with different peak values and action time of 100ms. The results show that: the unreinforced wall collapses under the gas explosion load with the peak overpressure of 50kPa
and its peak resistance to 100ms explosion impact load is between 40kPa and 50kPa; compared with the two-way wall reinforced by spraying the polyurea on its front
the backside reinforcement method is more economical and practical. The wall strengthened on the front cracks and collapses under 50kPa load
while the displacements of the back reinforced wall and the double-sided reinforced wall are only 35.3mm and 33.6mm
respectively
and the polyurea spraying on the back can effectively prevent debris splashing.
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