1 Geotechnical Research Institute, China Institute of Water Resources and Hydropower Research, Beijing 100038, China 2 Unit 95899 of PLA, Beijing 100068, China
Abstract: In order to study the enhancing effect of NFB700E1 high-strength steel plate on the anti-collapse performance of reinforced concrete structures, five sets of contact explosion tests on the composite structure were carried out(including a control group of Q345 ordinary steel plate), while an effective numerical simulation model was established based on the test results. Through lots of numerical simulation tests, the equivalent non-collapsing coefficient (ENC for short) of composite structures are calculated, by which the enhancement range of anti-collapsing steel plate is quantified. The results show that, in the anti-explosion tests, the equivalent diameter of blast pit, the depth of blast pit and the maximum deformation of anti-collapsing steel plate all grow up with the decrease of the thickness of reinforced concrete target plate. By comparing the depth of blast hole and the maximum deformation of steel plate in both simulation and tests, the finite element numerical simulation model was continuously iterative optimized. The ENC of compose structures and reinforced concrete were calculated. For the NFB700E1 steel plates of different thickness, the ENC were about 0.141(8 mm) and 0.159(6 mm), which were 70.3% and 66.5% higher than that of reinforced concrete (ENC=0.475), respectively. Compared to the Q345 ordinary steel plate (ENC=0.230), the increases were respectively 38.7% and 30.9%. The numerical simulation model established in this work can be extended to more working conditions and provide reference for the research of anti-collapse in other protection engineering.
方新宇, 徐干成, 魏迎奇, 刘彦泉, 袁伟泽, 周俊鹏. 新型高强钢板在结构抗接触爆炸中的应用[J]. 材料导报, 2024, 38(5): 23060206-7.
FANG Xinyu, XU Gancheng, WEI Yingqi, LIU Yanquan, YUAN Weize, ZHOU Junpeng. Research on the Application of a New Type of High Strength Steel Plate in Structures Resistance to Contact Explosion. Materials Reports, 2024, 38(5): 23060206-7.
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2024, Vol. 38 
