Location

New York, New York

Session Start Date

4-13-2004

Session End Date

4-17-2004

Abstract

A case study using grouting and dewatering system to protect a residential building during an adjacent deep excavation is presented in this paper. The building was a 73-year old masonry structure with two additional stories added to its original designed four stories height. The building was located 5 m away from a 15 m deep excavation. The project was located in downtown Shanghai, China. Grouting was injected between excavation and the building to compensate for ground loss and stress relief to reduce the building’s settlement. Dewatering was applied at the far end to increase the settlements and limit the differential settlement. This project was the first successful case using dewatering to protect a building in such a low permeability Shanghai clay. The results demonstrated that dewatering and grouting methods were an effective way of protecting buildings near deep excavations.

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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Grouting and Dewatering in Balancing Settlement of a Building

New York, New York

A case study using grouting and dewatering system to protect a residential building during an adjacent deep excavation is presented in this paper. The building was a 73-year old masonry structure with two additional stories added to its original designed four stories height. The building was located 5 m away from a 15 m deep excavation. The project was located in downtown Shanghai, China. Grouting was injected between excavation and the building to compensate for ground loss and stress relief to reduce the building’s settlement. Dewatering was applied at the far end to increase the settlements and limit the differential settlement. This project was the first successful case using dewatering to protect a building in such a low permeability Shanghai clay. The results demonstrated that dewatering and grouting methods were an effective way of protecting buildings near deep excavations.