Research on dynamic p-y curves in liquefied sand under cyclic loading conditions
文献类型：期刊论文
| 作者 | Zhang, Xiao-ling2; Zhang, Bing-jie2; Zhang, Wen-Xi2; Han, Yan1 |
| 刊名 | OCEAN ENGINEERING
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 285页码:7 |
| 关键词 | Dynamic p -y curve Cyclic loads Pore pressure ratio Soil resistance around the pile |
| ISSN号 | 0029-8018 |
| DOI | 10.1016/j.oceaneng.2023.115360 |
| 通讯作者 | Han, Yan(zhangxiaoling31@163.com) |
| 英文摘要 | Under dynamic cyclic loads, the pore water pressure in saturated sand rises continuously, which leads to the reduction of horizontal bearing capacity or the damage of the pile foundation. Under dynamic cyclic loads, the existing calculations methods of horizontal bearing capacity of pile foundations were obtained by proposing a reduction factor for the static p-y curve model mostly. Compared with the test results, the soil resistance around the pile obtained by this method is often overvalued and the pile-soil relative displacement has a relative underestimation. As a result, this method is not suitable for pile foundation design. Therefore, the variations of soil resistance around the pile and the pile-soil relative displacement are obtained by analyzing the effect of pore pressure ratio on soil strength around the pile in saturated sand in this paper. The theoretical formulas related to the cyclic vibration times and pore pressure ratio are proposed. The proposed formulas are introduced into the dynamic p-y curve model to obtain the dynamic p-y backbone curve in the process of sand liquefaction. The research results show that the variations of the soil resistance around the pile and the pile-soil relative displacement are related to the pore pressure ratio and the cyclic vibration times during the sand liquefaction. As the cyclic vibration times increases, the pore pressure increases, the soil resistance around the pile decreases and the pile-soil relative displacement increases. |
| WOS关键词 | PILE ; BEHAVIOR |
| 资助项目 | National Natural Science Foundation of China[52078016] |
| WOS研究方向 | Engineering ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001047923000001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/196782]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Han, Yan |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Xiao-ling,Zhang, Bing-jie,Zhang, Wen-Xi,et al. Research on dynamic p-y curves in liquefied sand under cyclic loading conditions[J]. OCEAN ENGINEERING,2023,285:7. |
| APA | Zhang, Xiao-ling,Zhang, Bing-jie,Zhang, Wen-Xi,&Han, Yan.(2023).Research on dynamic p-y curves in liquefied sand under cyclic loading conditions.OCEAN ENGINEERING,285,7. |
| MLA | Zhang, Xiao-ling,et al."Research on dynamic p-y curves in liquefied sand under cyclic loading conditions".OCEAN ENGINEERING 285(2023):7. |
入库方式： OAI收割
来源：地理科学与资源研究所
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