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The Deformation Characteristics of a 40-m-Deep Excavation Supported by a Suspended Diaphragm Wall in Rock and Soil Composite Ground
https://orcid.org/http://orcid.org/0000-0001-8370-3163
A 40-m-deep large excavation of a subway station is relatively rare in the world. The retaining design scheme and deformation characteristics of suspended diaphragm walls with struts in rock and soil composite ground are introduced. The excavation is numerically simulated, and the reliability of the numerical model is verified by field-testing data. Then, by changing the parameters of the numerical model, the influences of the parameters on the deformation of the excavation are analysed. Research shows that the deformation characteristics of this superdeep excavation is different from the conventional foundation excavation. The superdeep excavation has a small scope of influence on the surrounding soil, the maximum lateral deformation of the supporting structure is also small, and the maximum ground settlement point is closer to the foundation pit. The most important influence on the lateral displacement of the superdeep excavation with the dual structure of rock and soil is the prestressing. The support method of the suspended diaphragm wall is reliable.
The Deformation Characteristics of a 40-m-Deep Excavation Supported by a Suspended Diaphragm Wall in Rock and Soil Composite Ground
https://orcid.org/http://orcid.org/0000-0001-8370-3163
A 40-m-deep large excavation of a subway station is relatively rare in the world. The retaining design scheme and deformation characteristics of suspended diaphragm walls with struts in rock and soil composite ground are introduced. The excavation is numerically simulated, and the reliability of the numerical model is verified by field-testing data. Then, by changing the parameters of the numerical model, the influences of the parameters on the deformation of the excavation are analysed. Research shows that the deformation characteristics of this superdeep excavation is different from the conventional foundation excavation. The superdeep excavation has a small scope of influence on the surrounding soil, the maximum lateral deformation of the supporting structure is also small, and the maximum ground settlement point is closer to the foundation pit. The most important influence on the lateral displacement of the superdeep excavation with the dual structure of rock and soil is the prestressing. The support method of the suspended diaphragm wall is reliable.
The Deformation Characteristics of a 40-m-Deep Excavation Supported by a Suspended Diaphragm Wall in Rock and Soil Composite Ground
https://orcid.org/http://orcid.org/0000-0001-8370-3163
A 40-m-deep large excavation of a subway station is relatively rare in the world. The retaining design scheme and deformation characteristics of suspended diaphragm walls with struts in rock and soil composite ground are introduced. The excavation is numerically simulated, and the reliability of the numerical model is verified by field-testing data. Then, by changing the parameters of the numerical model, the influences of the parameters on the deformation of the excavation are analysed. Research shows that the deformation characteristics of this superdeep excavation is different from the conventional foundation excavation. The superdeep excavation has a small scope of influence on the surrounding soil, the maximum lateral deformation of the supporting structure is also small, and the maximum ground settlement point is closer to the foundation pit. The most important influence on the lateral displacement of the superdeep excavation with the dual structure of rock and soil is the prestressing. The support method of the suspended diaphragm wall is reliable.
The Deformation Characteristics of a 40-m-Deep Excavation Supported by a Suspended Diaphragm Wall in Rock and Soil Composite Ground
KSCE J Civ Eng
Li, Gongchen (author) / Li, Qimin (author) / Wang, Jian (author) / Dong, Jingmin (author) / Sun, Qiang (author)
KSCE Journal of Civil Engineering ; 26 ; 1040-1050
2022-03-01
11 pages
Article (Journal)
Electronic Resource
English
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