Centrifugal model tests on excavation effect of interval foundation pits

MA Xian-feng; LIN Xiang; WANG Xin-jie; HUANG Ji-cheng

doi:10.11779/CJGE2022S2020

Volume 44 Issue S2

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Chinese Journal of Geotechnical Engineering > 2022 > 44(S2): 92-96. > DOI: 10.11779/CJGE2022S2020

MA Xian-feng, LIN Xiang, WANG Xin-jie, HUANG Ji-cheng. Centrifugal model tests on excavation effect of interval foundation pits[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(S2): 92-96. DOI: 10.11779/CJGE2022S2020

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Centrifugal model tests on excavation effect of interval foundation pits

1.
Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China
2.
College of Civil Engineering, Kashi Univeristy, Kashi 844006, China
3.
Shanghai Shentong Metro Group Co. Ltd., Shanghai 201103, China

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Received Date: December 01, 2022
Available Online: March 26, 2023

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Abstract

Abstract

The centrifugal model tests are used to study the excavation effects of interval foundation pits on the adjacent structures and the retaining walls. The tests adopt the generalized similarity ratio of 200 to carry out the scale simulation. The foundation pits are excavated in six steps of the shutdown-excavation method. The deformation data at different positions of the station walls, the tunnel walls and the retaining walls in each step are obtained. Finally, the deformation rules of the structures close to the interval foundation pits are drawn by analyzing these data. This study may provide some reference for the design and construction of similar projects in the future.
- centrifugal model test,
- interval foundation pit,
- retaining wall,
- excavation effect

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