Investigating the dynamic tensile behaviors of deep coral reef limestone under coupled static-dynamic loads
文献类型：期刊论文
| 作者 | Wu, Kai2,3; Meng, Qingshan2,3; Deng, Jiajun1; Li, Hongya1; Wang, Chi2,3; Shen, Tianli2,3; Luo, Le2,3 |
| 刊名 | OCEAN ENGINEERING
 |
| 出版日期 | 2025-02-15 |
| 卷号 | 318页码:14 |
| 关键词 | Coral reef limestone Energy dissipation Digital volume correlation Static-dynamic coupling loads |
| ISSN号 | 0029-8018 |
| DOI | 10.1016/j.oceaneng.2024.120111 |
| 英文摘要 | Coral reef limestone (CRL) strata inevitably encounter coupled static-dynamic tension during the process of underground space development of island reefs. This paper conducted a series of dynamic tension tests with different pre-static loads by a modified split Hopkinson pressure bar (SHPB) with the high-speed camera module. Moreover, we used CT scans to reveal the effect of pore structure on crack propagation path. The results demonstrate that the total tensile strength of CRL is independent of pre-static loads. An empirical formula is proposed to predict the normalized total tensile strength. The impedance difference between the CRL samples and incident bar leads to the proportion difference between reflected and absorbed energies in the experiment. As the impact velocity further increases, the reflected energy becomes significantly greater than the absorbed energy. Furthermore, with an increase in pre-static load, the absorbed energy of CRL decreases at the same impact velocity, this decreasing trend is more pronounced at higher impact velocities. Cracking induced by large macropores near the diameter results in a "crescent" shape macrocrack. The conclusions provide a promising reference for explosion excavation of underground space of island reefs. |
| 资助项目 | National Natural Science Founda-tion of China[41877267] ; National Natural Science Founda-tion of China[41877260] ; Priority Research Program of the Chinese Academy of Sciences[XDA13010201] |
| WOS研究方向 | Engineering ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001394344900001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37847]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Meng, Qingshan |
| 作者单位 | 1.Army Engn Univ PLA, State Key Lab Disaster Prevent & Mitigat Explos &, Nanjing 210007, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Kai,Meng, Qingshan,Deng, Jiajun,et al. Investigating the dynamic tensile behaviors of deep coral reef limestone under coupled static-dynamic loads[J]. OCEAN ENGINEERING,2025,318:14. |
| APA | Wu, Kai.,Meng, Qingshan.,Deng, Jiajun.,Li, Hongya.,Wang, Chi.,...&Luo, Le.(2025).Investigating the dynamic tensile behaviors of deep coral reef limestone under coupled static-dynamic loads.OCEAN ENGINEERING,318,14. |
| MLA | Wu, Kai,et al."Investigating the dynamic tensile behaviors of deep coral reef limestone under coupled static-dynamic loads".OCEAN ENGINEERING 318(2025):14. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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