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

doi:10.12143/j.ztgc.2024.06.019

Home > Archive>Volume 51, Issue 6, 2024 >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
DOI:
                        10.12143/j.ztgc.2024.06.019
                    
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Author:
                        MA Ning1MA Ning
Beijing SANY Intelligent Technology Co., Ltd., Beijing102200, China
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DENG Yue1DENG Yue
Beijing SANY Intelligent Technology Co., Ltd., Beijing102200, China
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LING Xue2LING Xue
China University of Geosciences (Beijing), Beijing100037China
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YANG Linrui2YANG Linrui
China University of Geosciences (Beijing), Beijing100037China
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QIAN Yang1QIAN Yang
Beijing SANY Intelligent Technology Co., Ltd., Beijing102200, China
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LIU Yi3LIU Yi
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, WuhanHubei430074, China
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HUANG Shijie3HUANG Shijie
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, WuhanHubei430074, China
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Affiliation:1.Beijing SANY Intelligent Technology Co., Ltd., Beijing102200, China;2.China University of Geosciences (Beijing), Beijing100037China;3.State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, WuhanHubei430074, China
Clc Number:TU473.1
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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.

Key words:pulse discharge;shock wave;cast-in-place belled pile;“irrigation-expansion” integrated construction method

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History

Received:January 02,2024
Revised:April 11,2024
Adopted:April 15,2024
Online: December 04,2024
Published: November 10,2024

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