Location

New York, New York

Session Start Date

4-13-2004

Session End Date

4-17-2004

Abstract

Jet grouting in Shanghai can date back to late 1970s but was seldom applied in constructive projects. It was not until the construction of Metro in Shanghai in 1980s that jet grouting became widely accepted. Now it has been successfully applied in the constructions of two subway lines and basic constructions of some buildings nearby. A lot of experience has been accumulated through practice in terms of suitable conditions and situations. First, it can reduce deformation caused by excavation. When the system of braced framing in a certain geological condition cannot meet the demand of deforming control and bracing path cannot be increased, the method of enhancing resistance of passive zone of enclosing structure should be taken into consideration. Soil body strengthening of passive zone is usually a reasonable method. When problems of piping or artesian water occur, jet grouting of stabilizing foundation pit bottom can be used if method of groundwater lowering is not suitable due to environmental circumstances. Jet grouting is also employed in cut-off wall of foundation pit and entrance in shield working well.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Fifth Conference

Publisher

University of Missouri--Rolla

Publication Date

4-13-2004

Document Version

Final Version

Rights

© 2004 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Apr 13th, 12:00 AM Apr 17th, 12:00 AM

The Application of Jet Grouting in Shanghai Foundation Pit Projects

New York, New York

Jet grouting in Shanghai can date back to late 1970s but was seldom applied in constructive projects. It was not until the construction of Metro in Shanghai in 1980s that jet grouting became widely accepted. Now it has been successfully applied in the constructions of two subway lines and basic constructions of some buildings nearby. A lot of experience has been accumulated through practice in terms of suitable conditions and situations. First, it can reduce deformation caused by excavation. When the system of braced framing in a certain geological condition cannot meet the demand of deforming control and bracing path cannot be increased, the method of enhancing resistance of passive zone of enclosing structure should be taken into consideration. Soil body strengthening of passive zone is usually a reasonable method. When problems of piping or artesian water occur, jet grouting of stabilizing foundation pit bottom can be used if method of groundwater lowering is not suitable due to environmental circumstances. Jet grouting is also employed in cut-off wall of foundation pit and entrance in shield working well.