Experimental Study for the Embedded Depth of Support Structure Foundation Pit in Granite Residual Soil Area

In order to deeply understand the appropriate embedded depth of the foundation pit diaphragm wall in granite residual soil area, a physical model of the diaphragm wall with inner support for foundation excavation was constructed according to the actual project in the proportion of 1 : 30. The distri...

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Bibliographic Details
Published in:Advances in civil engineering 2020, Vol.2020 (2020), p.1-13
Main Authors: Chen, Zhi-dong, Liang, Zhu, Liu, Xiao-yang, Li, Bai-long, Gao, Rui-yuan, Wang, Chang-ming, Liu, Yi-ao, Jiang, Nan
Format: Article
Language:English
Subjects:
Civil engineering
Diaphragm wall
Dimensional analysis
Earth pressure
Engineering
Excavation
Experiments
Granite
Mathematical models
Residual soils
Simulation
Soil settlement
Stress concentration
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Summary:In order to deeply understand the appropriate embedded depth of the foundation pit diaphragm wall in granite residual soil area, a physical model of the diaphragm wall with inner support for foundation excavation was constructed according to the actual project in the proportion of 1 : 30. The distribution of Earth pressure, the horizontal displacement of the wall, and the settlement behind the wall were obtained by physical experiments. The numerical simulation was then performed to authenticate the results from physical modeling. It was observed that the embedded depth of the diaphragm wall had the most obvious influence on the horizontal displacement of the wall. Moreover, the final soil settlement and its influence were significantly increased with the decrease in embedded depth. The analysis results also suggested that the control value for the embedded depth of the wall should not be less than 0.36 H (H is the excavation depth of the foundation pit).
ISSN:1687-8086
1687-8094
DOI:10.1155/2020/6645942