- 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: | ZHONG Xiaochun, HE Chunhao, LI Yongyun, WANG Ziyi, CHEN Jie. Study on Surface Uplift Caused by Construction of Shallow-Buried Soil Rectangular Pipe Jacking at Subway Entrance and Exit[J]. Journal of Southwest Jiaotong University, 2023, 58(3): 603-612. doi: 10.3969/j.issn.0258-2724.20210223
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In view of the risk of excessive surface uplift in rectangular pipe jacking construction under the condition of shallow-buried soil, the finite element software MIDAS GTS was applied to simulate the dynamic process of large-diameter rectangular pipe jacking, and to explore the law of surface uplift caused by different thickness of soil covering, different jacking pressure of excavation face and different friction between pipe joint and soil, and to compare and analyze with the field monitoring data. The results show that the uplifting rule of surface monitoring points during pipe jacking is basically consistent with the numerical calculation results. The surface uplift caused by the jacking pressure on the excavation surface of the pipe jacking and the frictional resistance between the pipe joints and the formation is superimposed to reach a peak value near the excavation surface. As the thickness of the overburden decreases, the peak value of the surface uplift increases linearly. When the jacking pressure of excavation face is 100 kPa and the friction resistance of the pipe joint is 35 kPa, the peak value of surface uplift increases about 6.00 mm when the soil jacking thickness decreases for 0.1
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