scholarly journals Sensitivity analysis of influencing factors of deep foundation pit engineering support structure design in soft soil area

2018 ◽  
Author(s):  
Lu Chen ◽  
Huibiao Ma
Keyword(s):  
Sensitivity Analysis ◽  
Influencing Factors ◽  
Soft Soil ◽  
Structure Design ◽  
Deep Foundation ◽  
Support Structure ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Soft Soil Area ◽  
Soil Area

Study on Composite Soil Nailing Wall in Soft Soil Area of Complex Condition with Emphasis on Analysis by Finite Element Analysis

2012 ◽  
Vol 174-177 ◽  
pp. 2020-2023 ◽  
Author(s):  
Bing Wang
Keyword(s):  
Finite Element ◽  
Soft Soil ◽  
Horizontal Displacement ◽  
Deep Foundation ◽  
Circular Area ◽  
Foundation Pit ◽  
Soil Nails ◽  
Deep Foundation Pit ◽  
Soft Soil Area ◽  
Soil Area

Based on a typical projects, the horizontal displacement in depth, horizontal displacement and vertical subsidence of pile top, and settlements of surrounding buildings are monitored with the process on digging of deep foundation pit. The study on digging process of foundation pit is analyzed by using finite element software. Using mapped meshing method, from mixing the pile near the semi-circular area (radius = 50m), the meshing appropriate encryption in order to improve the accuracy of the external semi-circular area (radius = 65m) mesh is less appropriate sparse.Layer by layer to kill the layers of the soil unit and activate the soil nails (spring element), the simulated excavation and synchronization of soil nails construction.Verify the arc form of failure surface in side of deep foundation pit in soft soil area. Which is valuable for reference to similar structure engineering of foundation pit.

Finite Element Study on Ring-Beam Supporting Structure of Deep Foundation Pit in Coastal Soft Soil Area

2012 ◽  
Vol 256-259 ◽  
pp. 1908-1911 ◽  
Author(s):  
Xi Yuan Liu ◽  
Wen Peng Cai ◽  
Ji Zhou ◽  
Xin Yan Wang
Keyword(s):  
Finite Element ◽  
Soft Soil ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Supporting Structure ◽  
Soil Settlement ◽  
Soft Soil Area ◽  
Stress And Deformation ◽  
Soil Area

Ring-beam supporting technology is increasingly used in coastal soft soil area. Based on a foundation pit supporting case of general hospital in Tianjin, the 3-dim finite element construction was simulated with MIDAS/GTS. According to the calculation, the stress and deformation characteristics of deep foundation pit supporting structure under the ring-beam action in soft soil area, and the surrounding soil settlement is analyzed. The final foundation pit supporting solution is selected between two different schemes. The analysis method and conclusions are useful for design and construction of other similar projects.

Selection Analysis of Enclosure Structure for Deep Foundation Pit under Complicated Geological Conditions

2012 ◽  
Vol 446-449 ◽  
pp. 1400-1403
Author(s):  
Qi Hu ◽  
Sheng Ming Luo ◽  
Zhu Jin Jiang
Keyword(s):  
Soft Soil ◽  
Structure Design ◽  
Soil Conditions ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Structure Selection ◽  
Geological Conditions ◽  
Soil Foundation ◽  
Soft Soil Foundation

By comprehensive consideration of soil conditions, geometric shape of deep foundation pit and many other kinds of factors, enclosure structure design needs to select optimal supporting and enclosure system with safety, economy and construction feasibility. On case study of enclosure structure selection about typical soft soil foundation, this paper researches effects of force- deformation of enclosure structure by brace layout, and of economy and construction feasibility. The research results may offer reference for similar projects.

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