Location

San Diego, California

Session Start Date

3-26-2001

Session End Date

3-31-2001

Abstract

Partially embedded rectangular foundations are considered. Soil at the side of the foundation is decoupled from that at the base and is treated as a stack of horizontal layers of unit thickness that are mutually uncoupled. The side soil stiffnesses/depth are formulated from the vibration of a massless rigid rectangular disc in an individual layer. In the development of formulations, the layer medium is further simplified with a column-spring system. All these simplifications lead to simple expressions suitable for practical use. The two parameters in these expressions are defined by iteration using two coupled simple equations. Dynamic soil stiffesses at the side are computed for foundations of rectangular base with various aspect ratios. Despite significant simplification, the developed expressions enable us to compute the side soil stiffnesses for rectangular foundations reasonably close to those computed by a far rigorous approach. An example of its application is provided.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Meeting Name

Fourth Conference

Publisher

University of Missouri--Rolla

Publication Date

3-26-2001

Document Version

Final Version

Rights

© 2001 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

Share

COinS
 
Mar 26th, 12:00 AM Mar 31st, 12:00 AM

Partially Embedded Rectangular Foundations: A Simplified Approach to Compute Dynamic Stiffnesses

San Diego, California

Partially embedded rectangular foundations are considered. Soil at the side of the foundation is decoupled from that at the base and is treated as a stack of horizontal layers of unit thickness that are mutually uncoupled. The side soil stiffnesses/depth are formulated from the vibration of a massless rigid rectangular disc in an individual layer. In the development of formulations, the layer medium is further simplified with a column-spring system. All these simplifications lead to simple expressions suitable for practical use. The two parameters in these expressions are defined by iteration using two coupled simple equations. Dynamic soil stiffesses at the side are computed for foundations of rectangular base with various aspect ratios. Despite significant simplification, the developed expressions enable us to compute the side soil stiffnesses for rectangular foundations reasonably close to those computed by a far rigorous approach. An example of its application is provided.