Static pressure and dynamic impact characteristics of filled jointed rock after frozen-thaw cycle damage
文献类型：期刊论文
| 作者 | Chai, Shaobo1,2; Liu, Huan1; Song, Lang1; Li, Xianpeng1; Fu, Xiaodong3; Zhou, Yongqiang3 |
| 刊名 | FRONTIERS IN ECOLOGY AND EVOLUTION
 |
| 出版日期 | 2023-07-20 |
| 卷号 | 11页码:17 |
| 关键词 | filled jointed rock freeze-thaw cycles compressive mechanical properties damage deterioration dynamic properties |
| ISSN号 | 2296-701X |
| DOI | 10.3389/fevo.2023.1222676 |
| 英文摘要 | In the construction project, rock mass is often destroyed from the joint plane, and the jointed rock mass is easy to be eroded by freeze-thaw environment. Therefore, the damage mechanical properties of filled jointed rock mass under freeze-thaw action are very important for construction disaster prevention, engineering safety evaluation and reinforcement. In order to research the effect of the freeze-thaw cycle on the mechanical deterioration properties and damage characteristics of filled jointed rocks, prefabricated filled jointed rock samples are tested with different numbers of freeze-thaw cycles under the temperature range of -20 degrees C similar to 20 degrees C. Then the wave velocity test, static compression test and SHPB impact test are conducted on the rock samples after freeze-thaw. Based on the test results, the change regularity of wave velocity degradation, static compression mechanical properties and dynamic compression mechanical properties of filled jointed rocks under the effect of freeze-thaw cycles were analyzed. The results show that the wave velocity, static compressive strength and dynamic compressive strength of the filled jointed rocks all show a downtrend with the increase of the number of freeze-thaw cycles, and each parameter is positively correlated with the strength of the filling materials. Among them, the decrease in the wave velocity of the rock sample after 30 freeze-thaw cycles is greater than 30%, and the strength loss of the static peak compressive strength exceeds half of its initial strength. The static peak strain rises exponentially with the increase of the number of freeze-thaw cycles while the dynamic peak strain does not show a clear trend. The dynamic peak strain is about 1/10 to 1/5 of the static peak strain. Under the same freeze-thaw action, the lower the strength of filling material, the more serious the damage. |
| 资助项目 | National Natural Science Foundation of China[42172302] ; National Natural Science Foundation of China[41902277] ; Natural Science Basic Research Plan in Shaanxi Province[2023-YBGY-085] ; Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education, Chongqing Jiaotong University[SLK2021A04] ; Fundamental Research Funds for the Central Universities, CHD[300102282201] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001041826300001 |
| 出版者 | FRONTIERS MEDIA SA |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39150]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Chai, Shaobo |
| 作者单位 | 1.Chang An Univ, Sch Civil Engn, Xian, Peoples R China 2.Chongqing Jiaotong Univ, Key Lab Hydraul & Waterway Engn, Minist Educ, Chongqing, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chai, Shaobo,Liu, Huan,Song, Lang,et al. Static pressure and dynamic impact characteristics of filled jointed rock after frozen-thaw cycle damage[J]. FRONTIERS IN ECOLOGY AND EVOLUTION,2023,11:17. |
| APA | Chai, Shaobo,Liu, Huan,Song, Lang,Li, Xianpeng,Fu, Xiaodong,&Zhou, Yongqiang.(2023).Static pressure and dynamic impact characteristics of filled jointed rock after frozen-thaw cycle damage.FRONTIERS IN ECOLOGY AND EVOLUTION,11,17. |
| MLA | Chai, Shaobo,et al."Static pressure and dynamic impact characteristics of filled jointed rock after frozen-thaw cycle damage".FRONTIERS IN ECOLOGY AND EVOLUTION 11(2023):17. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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