Chapter
Apr 26, 2012
Numerical Analysis on Co- and Postseismic Behavior of Sandy/Clayey Soil Ground Improved by Sand Compaction Pile Method
Authors: Hidekatsu Takeuchi [email protected], Toshihiro Noda [email protected], and Akira Asaoka [email protected]Author Affiliations
Publication: Soil Dynamics and Earthquake Engineering
Abstract
The co- and postseismic behaviors of typical loose sandy ground and soft clayey ground improved by the sand compaction pile (SCP) method were investigated using a soil-water coupled finite element deformation analysis program incorporating the SYS-Cam clay model. The results indicated that the deformation caused by earthquakes was suppressed in the SCP improved grounds, irrespective of whether they were sandy or clayey. Although the surrounding ground was liquefied in the case of SCP-improved sandy ground, the confining pressure was maintained in the SCP interpile zone because of the compaction effect produced by the cavity expansion of the sand piles. In the case of the SCP-improved clayey ground, negative excess pore pressures appeared in the SCP sand piles because of the hardening that results from plastic expansion and stress was concentrated on them.
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Copyright
© 2010 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Compacted soils
- Continuum mechanics
- Deformation (mechanics)
- Engineering fundamentals
- Engineering mechanics
- Finite element method
- Foundations
- Geomechanics
- Geotechnical engineering
- Methodology (by type)
- Numerical methods
- Pile foundations
- Piles
- Sandy soils
- Soft soils
- Soil analysis
- Soil deformation
- Soil mechanics
- Soil properties
- Soils (by type)
- Solid mechanics
- Structural mechanics
Authors
Affiliations
Research Engineer, Fudo Tetra Corporation, Tokyo, Japan.E-mail: [email protected]
Professor, Department of Civil Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan.E-mail: [email protected]
Professor, Department of Civil Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan.E-mail: [email protected]
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