Research on application technology of high voltage pulse discharge for large diameter cast-in-place belled piles

MA Ning; DENG Yue; LING Xue; YANG Linrui; QIAN Yang; LIU Yi; HUANG Shijie

doi:10.12143/j.ztgc.2024.06.019

2024 Vol. 51, No. 6

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Article navigation > DRILLING ENGINEERING > 2024 > 51(6): 152-159

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MA Ning, DENG Yue, LING Xue, YANG Linrui, QIAN Yang, LIU Yi, HUANG Shijie. 2024. Research on application technology of high voltage pulse discharge for large diameter cast-in-place belled piles. DRILLING ENGINEERING, 51(6): 152-159. doi: 10.12143/j.ztgc.2024.06.019

Citation:

MA Ning, DENG Yue, LING Xue, YANG Linrui, QIAN Yang, LIU Yi, HUANG Shijie. 2024. Research on application technology of high voltage pulse discharge for large diameter cast-in-place belled piles. DRILLING ENGINEERING, 51(6): 152-159. doi: 10.12143/j.ztgc.2024.06.019

Research on application technology of high voltage pulse discharge for large diameter cast-in-place belled piles

1. Beijing SANY Intelligent Technology Co., Ltd., Beijing 102200, China;
2. China University of Geosciences (Beijing ), Beijing 100037 China;
3. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan Hubei 430074, China

More Information

Corresponding author: DENG Yue

Received Date: 02 January 2024

Revised Date: 11 April 2024

Abstract

Abstract

This paper focuses on the pressure shock wave generated by the electric explosion of the wire acts on the hole wall of the soil layer and form the belled piles caused by squeezing the soil at the bottom of the pile. The relationship function and simulation model between the explosive energy of the wire and the shock wave pressure are established,and the relationship between the discharge parameters and the shock wave intensity is analyzed. The relationship between shock wave pressure and soil deformation is established,and the pressure required for the deformation of clay soil is calculated. The models of belled pile and equal diameter pile were made to verify the deformation characteristics of soil under the electric explosion of the wire,and the bearing capacity and pullout resistance of the two piles were compared and analyzed. Based on the electrical and technological parameters of the high-voltage pulse bottom expanding technology model test,the first high-voltage pulse belled pile with a diameter of 0.8m was constructed in China,and the “irrigation-expansion” integrated construction method was developed.
- pulse discharge /
- shock wave /
- cast-in-place belled pile /
- “irrigation-expansion” integrated construction method

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References

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