Prediction and control of vibrations induced by shield tunneling in hard rock strata for conservation of White Tower

CAI Yuanqiang; XIE Kuangqin; YUAN Zonghao; SUN Honglei; HUANG Yong; CAO Miaofeng; CAO Zhigang; LIANG Xu

doi:10.11779/CJGE20240009

Volume 47 Issue 5

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Chinese Journal of Geotechnical Engineering > 2025 > 47(5): 1064-1072. > DOI: 10.11779/CJGE20240009

CAI Yuanqiang, XIE Kuangqin, YUAN Zonghao, SUN Honglei, HUANG Yong, CAO Miaofeng, CAO Zhigang, LIANG Xu. Prediction and control of vibrations induced by shield tunneling in hard rock strata for conservation of White Tower[J]. Chinese Journal of Geotechnical Engineering, 2025, 47(5): 1064-1072. DOI: 10.11779/CJGE20240009

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Prediction and control of vibrations induced by shield tunneling in hard rock strata for conservation of White Tower

1.
College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, China
2.
Power China Huadong Engineering Co., Ltd., Hangzhou 311122, China
3.
College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
4.
Hangzhou Urban Infrastructure Construction Management Center, Hangzhou 311103, China

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Received Date: January 03, 2024
Available Online: May 07, 2024

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Abstract

Abstract

The environmental vibrations caused by shield tunneling in hard rock strata will have adverse effects on the neighboring cultural heritage buildings. In response to the challenges posed by the complex vibration sources from shield tunneling in hard rock, the stringent vibration criteria for cultural heritage preservation as well as the poor overall structural integrity, a vibration back-analysis method based on the field measurements and finite element method is proposed and is applied in prediction and control technology of the vibrations induced by shield tunneling in hard rock strata for conservation of the White Tower in the water conveyance pipe gallery tunnel project of Zhijiang Road. The vibration isolation effects are also analyzed by researchers focusing on two aspects, namely shield construction parameters and PVC hollow pile barriers. It is concluded that the main vibration source of shield tunneling in hard rock strata is the rotation of the cutter head and the cutting of hard rock by the disc cutters. There is a good correlation between excavation speed and tunneling-induced vibration level. Thus reducing the excavation speed significantly decreases vibration level over the concerned frequency range. The PVC hollow pile has a good vibration reduction effect in the mid-to-high frequency range, with an average vibration reduction rate of up to 50% within the White Tower area.
- hard rock stratum,
- shield tunneling,
- vibration back-analysis method,
- White Tower,
- amplification effect,
- PVC hollow pile

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References

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