Development of a Neutral Plane in PHC-Supported Embankments over Soft Soils: A Case Study of a Motor-Racing Circuit
文献类型：期刊论文
| 作者 | Wang, Gang3,4; Zhang, Xianwei3; Liu, Xinyu3,4,5; Chang, Zhixiong1,6; Liu, Zhihai1,6; Li, Yue2,6 |
| 刊名 | INTERNATIONAL JOURNAL OF GEOMECHANICS
 |
| 出版日期 | 2024-02-01 |
| 卷号 | 24期号:2页码:16 |
| 关键词 | Field test Numerical modeling Geogrid reinforcement Layered settlement Neutral plane Negative skin friction |
| ISSN号 | 1532-3641 |
| DOI | 10.1061/IJGNAI.GMENG-8349 |
| 英文摘要 | Piled embankments are becoming widely used to cope with engineering problems (e.g., excessive settlements, bearing failure) caused by soft soil subgrade to maintain the safety and stability of the constructed facilities. This study focused on an international motor-racing circuit currently under construction, where the underlying soft soil substratum characterized by a high void ratio and compressibility may largely influence the long-term performance of the project. Pretensioned high-strength concrete (PHC) pile-supported embankment is designed to improve this project, and its effectiveness remains to be studied. In addition, this study specifically focused on negative skin friction (NSF) and neutral plane (NP) position development, which significantly influence the bearing capacity of the pile foundation and have not been fully understood. As such, two large-scale field tests were performed on the PHC pile-supported embankments to monitor the settlement of piles and the surrounding soils. According to the monitored layered settlements, the NP development with time was quantitatively analyzed, and NP gradually moved up toward the pile top during soil consolidation. Comparison between the measurements of two test sites with and without geogrid reinforcement indicated that geogrids could not only alleviate total and differential settlements of the foundation but also contribute to the shallower final NP position. A numerical model, whose effectiveness was validated by comparing with the field measurements, was established to predict the complete variation of NP positions and explore the effects of various influencing factors through a parametric study. This study enhances the comprehension of NSF and NP development in pile foundations and provides valuable guidance for this motor-racing circuit and other related projects in the future. |
| 资助项目 | Science Fund for Distinguished Young Scholars of Hubei Province[2020CFA103] ; Youth Innovation Promotion Association CAS[2018363] ; National Natural Science Foundation of China[41972285] ; National Natural Science Foundation of China[42272337] ; National Natural Science Foundation of China[52178372] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001126272700006 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40158]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wang, Gang |
| 作者单位 | 1.Wuhan Smart Ecol Construct Investment Co Ltd, 188 Dongfeng Ave, Wuhan 430000, Hubei, Peoples R China 2.Wuhan Zhonghe Engn Technol Co Ltd, 216Changqing Rd, Jianghan, Wuhan 430000, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Huazhong Univ Sci & Technol, Sch Civil & Hydraul Engn, Wuhan 430074, Peoples R China 6.Hangqing Rd, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Gang,Zhang, Xianwei,Liu, Xinyu,et al. Development of a Neutral Plane in PHC-Supported Embankments over Soft Soils: A Case Study of a Motor-Racing Circuit[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2024,24(2):16. |
| APA | Wang, Gang,Zhang, Xianwei,Liu, Xinyu,Chang, Zhixiong,Liu, Zhihai,&Li, Yue.(2024).Development of a Neutral Plane in PHC-Supported Embankments over Soft Soils: A Case Study of a Motor-Racing Circuit.INTERNATIONAL JOURNAL OF GEOMECHANICS,24(2),16. |
| MLA | Wang, Gang,et al."Development of a Neutral Plane in PHC-Supported Embankments over Soft Soils: A Case Study of a Motor-Racing Circuit".INTERNATIONAL JOURNAL OF GEOMECHANICS 24.2(2024):16. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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