Research on Protective Effect of Lead Buffer Device under Explosion Load
DOI:
https://doi.org/10.54691/pb4ecx39Keywords:
Explosion Load; Protective Effect; Lead Buffer Device; Underground Dispersed Layer; Layered Protection Structure; Supporting Structure.Abstract
In modern society, the frequency of explosion accidents is gradually increasing, which brings a great threat to the safety of people's lives and property and social stability. Explosive loads are extremely destructive, with huge energy and powerful impact force released in an instant, capable of causing serious damage to buildings and infrastructure. Therefore, it is of great practical significance to study explosion protection measures in depth and improve the damage resistance of buildings and infrastructure under explosion loads. The traditional underground dispersed layer can reduce the impact of blast load on the structure to a certain extent, but with the continuous improvement of protection requirements, its limitations are gradually revealed. For example, the protection of underground dispersed layers may be less than ideal in some complex explosion situations, and their performance is susceptible to environmental factors such as salinity, consolidation, precipitation and ice, resulting in reduced protection effectiveness. In order to find a more effective solution for explosion protection, the idea of replacing the underground dispersion layer with lead dampers was proposed. As a new type of protective device, lead damper has unique advantages. Lead has good plastic deformation ability, and can absorb a large amount of energy through its own deformation under the action of explosion load, so as to effectively reduce the impact of explosion on the structure. In addition, lead dampers can be customized to meet specific engineering needs, allowing them to better adapt to different explosion scenarios and structural types. The purpose of this study is to further investigate the protective effect of lead dampers instead of underground dispersed layers under blast loads. Through a combination of theoretical analysis, numerical simulation and experimental research, the performance of the lead damper is comprehensively evaluated, and its response mechanism under blast load is analyzed, as well as the advantages and disadvantages compared with the underground dispersed layer. At the same time, the influence of the design parameters of the lead damper on the protection effect will be studied, so as to provide scientific basis and guidance for its application in practical engineering. Through this study, it is expected to provide a new and more effective means of protection for explosion protection engineering, and improve the safety and reliability of buildings and infrastructure under explosion loads. This will not only help reduce the losses caused by explosion accidents and ensure the safety of people's lives and property, but also contribute to the stability and sustainable development of society.
Downloads
References
[1] Zhou Hui, Ren Huiqi, Wu Xiangyun, et al. Explosion & Impact,2022,42(11):3-28.
[2] Huang Xu. Research on impact resistance of layered protective structure of civil air defense engineering with buffer layer[D].Southeast University,2019.DOI:10.27014/d.cnki.gdnau.2019. 001422.
[3] Ren Xinjian, Zhang Qingming, Liu Ruichao. Experimental study on anti-explosion performance of foam hollow ball distribution layer in layered structure[J].Vibration and Shock,2015,34(21):100-104.DOI:10.13465/j.cnki.jvs.2015.21.018.
[4] Zhao Kai. Research on attenuation and diffusion effect of layered protective layer on blast wave[D].University of Science and Technology of China,2007.
[5] Ye Zhongbao, Li Yongchi, Zhao Kai, et al. Experimental Mechanics,2017,32(03):377-384.
[6] Zhao Yuetang, Yu Xiaocun. Effect of distribution layer thickness on dynamic response of layered structure[J].Chinese Journal of Rock Mechanics and Engineering,2007,(S1):3540-3545.
[7] Li Yanzhao, Wang Xiaojun, Wu Xiangyun, et al. Experimental study on the protective effect of distribution layer hierarchical structure on nuclear explosion load[J].Journal of University of Science and Technology of China,2009,39(09):931-935.
[8] Wu Chunyao, Song Chunming, Wu Huajie. Research on explosion tamponade effect of layered protective structure[J].Protection Engineering,2023,45(05):41-47.
[9] Liu Zheng, Cheng Yihao, Qiu Yanyu, et al. Numerical analysis of layered protective structure against ultra-high velocity penetration[J].Explosion & Impact,2018,38(06):1317-1324.
[10] Ren Xinjian, Zhang Lei. Experimental study on anti-explosion performance of layered protective structure with foam ceramic hollow ball as distribution layer[J].Protection Engineering,2015, 37(01):12-16.
Downloads
- Views: 2 | Downloads: 1 PDF
Published
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.