Alternative Title

Paper No. 7.12

Location

St. Louis, Missouri

Session Start Date

3-8-1998

Session End Date

3-15-1998

Abstract

This paper reports a case study on treatment of soft days by dynamic compaction. A special technique adopted in this project allowed massive stiff columns to be formed under the impact locations, and the soils between these impact locations to be replaced and mixed with granular fills, hence creating a composite foundation. The comprehensive field investigation showed that the allowable bearing capacity of the treated ground (as a composite foundation) was 350 kPa, a significant increase compared with that of untreated ground (70 kPa). The achieved stiffness modulus of the composite foundation was 24 MPa.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Fourth Conference

Publisher

University of Missouri--Rolla

Publication Date

3-8-1998

Document Version

Final Version

Rights

© 1998 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Treatment of Soft Soils by Dynamic Compaction

St. Louis, Missouri

This paper reports a case study on treatment of soft days by dynamic compaction. A special technique adopted in this project allowed massive stiff columns to be formed under the impact locations, and the soils between these impact locations to be replaced and mixed with granular fills, hence creating a composite foundation. The comprehensive field investigation showed that the allowable bearing capacity of the treated ground (as a composite foundation) was 350 kPa, a significant increase compared with that of untreated ground (70 kPa). The achieved stiffness modulus of the composite foundation was 24 MPa.