Location

San Diego, California

Session Start Date

5-24-2010

Session End Date

5-29-2010

Abstract

On 26th January, 2001, the Kachchh region of Gujarat, India faced devastating earthquake of magnitude 7.6 (Mw) popularly known as “Bhuj” earthquake. Various man made facilities including earthen dams faced varying level of damages during the earthquake and one of the major causes of failure is attributed to wide spread liquefaction of foundation soil. In the present study, a typical Rudramata dam sections located in the Kachchh region is considered for the failure analysis using fully coupled nonlinear dynamic numerical code FLAC 5.0 with pore pressure generation capabilities under dynamic loadings. The analysis is performed using the acceleration – time history record of the Bhuj earthquake developed by Iyengar and Raghukanth (2006) involving analytical procedures. The results of the analysis of the dam section indicated that the presence of liquefiable soil beneath the foundation not only caused large deformation but also modified the failure pattern i.e. from slope to a base type failure, the feature which was also observed during field reconnaissance.

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

Numerical Analysis of Failure of Rudramatha Dam Section During 26th January, 2001, Bhuj Earthquake

San Diego, California

On 26th January, 2001, the Kachchh region of Gujarat, India faced devastating earthquake of magnitude 7.6 (Mw) popularly known as “Bhuj” earthquake. Various man made facilities including earthen dams faced varying level of damages during the earthquake and one of the major causes of failure is attributed to wide spread liquefaction of foundation soil. In the present study, a typical Rudramata dam sections located in the Kachchh region is considered for the failure analysis using fully coupled nonlinear dynamic numerical code FLAC 5.0 with pore pressure generation capabilities under dynamic loadings. The analysis is performed using the acceleration – time history record of the Bhuj earthquake developed by Iyengar and Raghukanth (2006) involving analytical procedures. The results of the analysis of the dam section indicated that the presence of liquefiable soil beneath the foundation not only caused large deformation but also modified the failure pattern i.e. from slope to a base type failure, the feature which was also observed during field reconnaissance.