Chapter
May 22, 2014
Study on Deformation Due to Deep Excavation Based on Monitoring Data in Soft Soil Area in Shanghai
Authors: JieQun Zhai, Jian Jia, and XiaoLin Xie [email protected]Author Affiliations
Publication: Tunneling and Underground Construction
Abstract
In this paper - based on monitoring data from 18 deep excavation cases in soft soil areas in Shanghai - the depth of basal heave (HR), the width of settlement zone (Bs), the maximum ground settlement (δvm) and lateral deflection of retaining wall (δhm) are studied. First, it is found that HR is the depth where the unloading ratio is 0.15. Second, Bs is found to be closely related to the volume of excavation and the depth of basal heave. Then, two simple methods are proposed for the prediction of Bs. Last, the relation between maximum deformation and construction time is studied and the objective construction time is suggested.
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Published In
Tunneling and Underground Construction
Pages: 237 - 245
Copyright
© 2014 American Society of Civil Engineers.
History
Published online: May 22, 2014
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ASCE Technical Topics:
- Construction engineering
- Construction management
- Construction methods
- Continuum mechanics
- Deformation (mechanics)
- Degrees of freedom
- Displacement (mechanics)
- Engineering mechanics
- Excavation
- Geomechanics
- Geotechnical data
- Geotechnical engineering
- Geotechnical investigation
- Heave
- Soft soils
- Soil deformation
- Soil dynamics
- Soil mechanics
- Soil settlement
- Soils (by type)
- Solid mechanics
- Structural mechanics
Authors
Affiliations
JieQun Zhai
College of Civil Engineering, Tongji University; Architectural Design & Research Institute of Tongji University (Group) Co., Ltd., 1230 Siping Road, Shanghai 200092, China
Jian Jia
College of Civil Engineering, Tongji University; Architectural Design & Research Institute of Tongji University (Group) Co., Ltd., 1230 Siping Road, Shanghai 200092, China
Architectural Design & Research Institute of Tongji University (Group) Co., Ltd., 1230 Siping Road, Shanghai 200092, China. E-mail: [email protected]
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