- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | CHEN Yonghui, HAN Dandan, KONG Gangqiang, CHEN Long, CHEN Geng. Effect of Artificial Crust Layer on Pile-Soil Stress Ratio of Pipe Pile Composite Foundation[J]. Journal of Southwest Jiaotong University, 2023, 58(5): 985-992. doi: 10.3969/j.issn.0258-2724.20210612
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In order to study the influence of artificial crust layer formed by in-situ solidified on the pile-soil stress ratio of prestressed pipe pile composite foundation, field experiments and numerical simulation analysis were carried out based on the mud pit section of Qianqing-Binhai highway in Shaoxing. On this basis, both the stress response and deformation of prestressed pipe pile composite foundation under embankment load were studied. From the pile-soil stress ratio, the influence of artificial crust layer on the bearing performance of pile composite foundation was emphatically discussed. In addition, the influence mechanism of design parameters such as the ratio of embankment height to net distance between pile caps and the ratio of pile cap width to net distance between pile caps on the development of pile-soil stress ratio were preliminarily studied. It shows that artificial crust layer can improve the bearing capacity. Under the experimental conditions, the maximum horizontal displacement of artificial crust layer combined prestressed pipe pile composite foundation occurs 5～6 m below the ground surface, which is different from traditional composite foundation decreases gradually along the depth. The pile-soil stress ratio is between 23 and 37, which is higher than that of traditional pile composite foundation.
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