Location

San Diego, California

Session Start Date

3-26-2001

Session End Date

3-31-2001

Abstract

The objects of this investigation are to examine the following mechanism of embankment dams for irrigation damaged by the 1995 Hyogoken-Nanbu Earthquake; 1) the mechanism and process of collapse for the Idenoshiri-Ike embankment dam using the effective stress earthquake response analysis; 2) the mechanism of upper slope failure for the Sugatadani-Ike embankment dam using the total stress earthquake response analysis as well as the slope stability analysis with seismic intensity. As a result, the following conclusions are obtained for each objects; 1) the mechanism and process of collapse due to liquefaction can be analyzed that the liquefied areas initially occurred at the toes of upper and lower slopes are extended and connected to make flow downward the volume of embankment and that the result of this analysis is consistent with the real damaged situation; 2) the mechanism of upstream slope failure can be explained only with considering the increase of excess pore pressure in the upstream slope, not extending complete liquefaction, using the both analyses.

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

A Study on Failure Mechanism of Embankment Dams for Irrigation Damaged by the 1995 Hyogoken-Nanbu Earthquake

San Diego, California

The objects of this investigation are to examine the following mechanism of embankment dams for irrigation damaged by the 1995 Hyogoken-Nanbu Earthquake; 1) the mechanism and process of collapse for the Idenoshiri-Ike embankment dam using the effective stress earthquake response analysis; 2) the mechanism of upper slope failure for the Sugatadani-Ike embankment dam using the total stress earthquake response analysis as well as the slope stability analysis with seismic intensity. As a result, the following conclusions are obtained for each objects; 1) the mechanism and process of collapse due to liquefaction can be analyzed that the liquefied areas initially occurred at the toes of upper and lower slopes are extended and connected to make flow downward the volume of embankment and that the result of this analysis is consistent with the real damaged situation; 2) the mechanism of upstream slope failure can be explained only with considering the increase of excess pore pressure in the upstream slope, not extending complete liquefaction, using the both analyses.