Numerical Modeling of Affection of Foundation Pit Excavation on Metro Tunnel

2011 ◽  
Vol 368-373 ◽  
pp. 2562-2566 ◽  
Author(s):  
Jiang Shu Ding ◽  
Yao Qiang Xian ◽  
Tian Jun Liu
Keyword(s):  
Normal Operation ◽  
Deep Excavation ◽  
Subway Tunnel ◽  
Underground Engineering ◽  
Foundation Pit ◽  
Element Analysis ◽  
Urban Transit ◽  
3D Finite Element ◽  
Transit Network ◽  
Metro Tunnel

With the development of urban construction, urban transit network has been gradually improved, but subway tunnel under its normal operation is inevitably affected by underground engineering activities such as foundation pit engineering. Based on the deep excavation near the effects of tunnel, the research content of 3d finite element analysis, from the qualitative research based on different situations of foundation excavation, is near to optimize the design and construction to provide the beneficial reference.

Study on the Influence of the Shield Tunnel Deformation Due to Excavation of Foundation Pit with Field Data

2012 ◽  
Vol 446-449 ◽  
pp. 1808-1812
Author(s):  
Jiang Shu Ding ◽  
Yao Qiang Xian ◽  
Tian Jun Liu
Keyword(s):  
Stress State ◽  
Field Data ◽  
Influence Factors ◽  
Shield Tunnel ◽  
Deep Excavation ◽  
Foundation Pit ◽  
Metro Tunnel ◽  
Main Influence

The deep excavation of the foundation pit adjacent to the metro tunnel will change the stress state of the neighboring soil. And the deformation of tunnel will be induced which will cause impair to daily operation and the safety of metro tunnel. According to the practice of deep excavation neighboring the metro tunnel in Guangzhou, the main influence factors of deformation and stress of tunnel will be analyzed based on exaction conditions and field data. The conclusions will be benefit to similar projects.

The Deformation Behavior Analysis for Deep Foundation Pit in Soft Soil Area Considering Seepage-Consolidation Coupling

2014 ◽  
Vol 926-930 ◽  
pp. 712-715
Author(s):  
Li Qiao Cao
Keyword(s):  
Finite Element ◽  
Deformation Behavior ◽  
Soft Soil ◽  
Biot Theory ◽  
Three Dimension ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Element Analysis ◽  
3D Finite Element ◽  
3D Finite Element Method

After a literature survey, the application of 3D seepage-consolidation coupling FEM model based on Biot theory and Cam-Clay model for simulating deep excavation dewatering in soft soil is studied. A foundation pit in East-China is taken as an example and 3D finite element method is used to simulate the dewatering and excavation. Through the 3D finite element analysis, the three-dimension numerical method can be applied to study the deformation behavior of foundation pit and surrounding soil. The numerical simulation experience and data presented in the paper can be refereed in the design, construction and research of similar projects.

The 3-D Finite Element Numerical Analysis of Composite Soil Nailing Walls in the Foundation Pit Engineering

2011 ◽  
Vol 90-93 ◽  
pp. 2358-2362
Author(s):  
Jiang Shu Ding ◽  
Yao Qiang Xian ◽  
Tian Jun Liu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Soil Nailing ◽  
Deep Excavation ◽  
Working Mechanism ◽  
Foundation Pit ◽  
Element Analysis ◽  
In Situ Test ◽  
Composite Soil Nailing

Combined with one foundation pit engineering in Guangzhou, the method was adopted in this paper, by which the in-situ test and finite element analysis were integrated. According to situation of study and demand of engineering, the study in composite soil nailing walls system was focused on working mechanism. The law of soil-nailing support technology for deep excavation was pointed out and summarized to provide reference to similar projects.

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