Location

San Diego, California

Session Start Date

5-24-2010

Session End Date

5-29-2010

Abstract

Reinforced soil walls have become very popular in seismic areas owing to their flexible nature and cost effectiveness when compared to the conventional retaining structures. Although the use of reinforced soil walls with modular block facings and gabion facings is growing world wide at a rapid rate, the seismic response of these walls is yet to be analyzed. This paper discusses the response of these walls in terms of lateral facing deflection, reinforcement tensile force and crest surface settlement when subjected to seismic loading simulated by means of a variable amplitude harmonic vibration using the finite element analysis package, PLAXIS V8. From the study, it was found that there is significant effect of seismic loading on the response of reinforced soil walls and the analyses and design of these walls are to be done only after considering the dynamic earthquake loading in seismic prone areas. The gabion faced reinforced soil walls were found to be more effective than the segmental walls in resisting the dynamic excitations due to earthquake loading. The study also confirmed that various reinforcement design parameters and backfill parameters play an important role in minimizing the facing deflection and the settlement of the wall subjected to dynamic earthquake excitation.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

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

Meeting Name

Fifth Conference

Publisher

Missouri University of Science and Technology

Publication Date

5-24-2010

Document Version

Final Version

Rights

© 2010 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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May 24th, 12:00 AM May 29th, 12:00 AM

Seismic Response of Reinforced Soil Retaining Walls with Block Facings

San Diego, California

Reinforced soil walls have become very popular in seismic areas owing to their flexible nature and cost effectiveness when compared to the conventional retaining structures. Although the use of reinforced soil walls with modular block facings and gabion facings is growing world wide at a rapid rate, the seismic response of these walls is yet to be analyzed. This paper discusses the response of these walls in terms of lateral facing deflection, reinforcement tensile force and crest surface settlement when subjected to seismic loading simulated by means of a variable amplitude harmonic vibration using the finite element analysis package, PLAXIS V8. From the study, it was found that there is significant effect of seismic loading on the response of reinforced soil walls and the analyses and design of these walls are to be done only after considering the dynamic earthquake loading in seismic prone areas. The gabion faced reinforced soil walls were found to be more effective than the segmental walls in resisting the dynamic excitations due to earthquake loading. The study also confirmed that various reinforcement design parameters and backfill parameters play an important role in minimizing the facing deflection and the settlement of the wall subjected to dynamic earthquake excitation.