Seismic Deformation Analysis for Risk Assessment of Embankment Dams

Seismic Deformation Analysis of Embankment Dams Using Simplified Total-Stress Approach

Journal of Geotechnical and Geoenvironmental Engineering ◽

10.1061/(asce)gt.1943-5606.0002135 ◽

2019 ◽

Vol 145 (10) ◽

pp. 04019076

Author(s):

Kevin Zeh-Zon Lee ◽

Navead Jensen ◽

David R. Gillette ◽

Derek T. Wittwer

Keyword(s):

Deformation Analysis ◽

Total Stress ◽

Embankment Dams ◽

Seismic Deformation

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Seismic Permanent Deformation Analysis for Gravel Dams in High Altitude Meizoseismal Areas

Journal of Physics Conference Series ◽

10.1088/1742-6596/2152/1/012029 ◽

2022 ◽

Vol 2152 (1) ◽

pp. 012029

Author(s):

Junjie He ◽

Yonggang Guo

Keyword(s):

Permanent Deformation ◽

Three Dimensional ◽

Seismic Hazard Assessment ◽

Element Model ◽

Deformation Analysis ◽

Embankment Dams ◽

Dimensional Finite Element ◽

The Stability ◽

Three Dimensional Finite Element ◽

Seismic Deformation

Abstract It is commonly believed that the permanent deformation is introduced by the meizoseismal impacts of embankment dams, which is impossible to be reinstated and will further endanger the safety and normal use thereof. In this study, a three-dimensional finite element model of the dam have been established with the equivalent nodal force approach to calculate the permanent deformation of the dams under seismic protection. It was indicated by the results that the acceleration response of dams was not intense in the meizoseismal areas and the vertical seismic permanent deformation mainly occurred at the top of the dams, of which the collapse rate is less than 1% with small lateral and horizontal seismic permanent deformation. Moreover, the dam profile has been indicated with inward shrinkage upon the seismic permanent deformation, which is beneficial to the stability of the dam slopes. However, seismic measures are required to improve the seismic performance of the dam area because of the large acceleration and permanent seismic deformation at the dam tops. The research results provide a decision basis for seismic hazard assessment and reinforcement solutions of similar dams.

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Soil-Water Coupled Finite Deformation Analysis of Seismic Deformation and Failure of Embankment on Horizontal and Inclined Ground

Soil Dynamics and Earthquake Engineering ◽

10.1061/41102(375)16 ◽

2010 ◽

Author(s):

Masaki Nakano ◽

Takayuki Sakai ◽

Toshihiro Noda ◽

Akira Asaoka

Keyword(s):

Soil Water ◽

Finite Deformation ◽

Deformation Analysis ◽

Deformation And Failure ◽

Seismic Deformation

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Modified risk assessment tool for embankment dams: case study of three dams in Turkey

Civil Engineering and Environmental Systems ◽

10.1080/10286608.2017.1300794 ◽

2017 ◽

Vol 34 (1) ◽

pp. 53-67 ◽

Cited By ~ 3

Author(s):

Alper Aydemir ◽

Aytaç Güven

Keyword(s):

Risk Assessment ◽

Assessment Tool ◽

Risk Assessment Tool ◽

Embankment Dams

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Seismic deformation analysis of Tuttle Creek Dam

Canadian Geotechnical Journal ◽

10.1139/t11-107 ◽

2012 ◽

Vol 49 (3) ◽

pp. 323-343 ◽

Cited By ~ 10

Author(s):

Timothy D. Stark ◽

Michael H. Beaty ◽

Peter M. Byrne ◽

Gonzalo Castro ◽

Francke C. Walberg ◽

...

Keyword(s):

Constitutive Model ◽

Constitutive Models ◽

Deformation Analysis ◽

East Central ◽

Fine Grained ◽

Upstream Slope ◽

Downstream Slope ◽

Soil Constitutive Models ◽

Seismic Deformation

To facilitate the design of seismic remediation for Tuttle Creek Dam in east central Kansas, a seismic finite difference analysis of the dam was performed using the software FLAC and the UBCSAND and UBCTOT soil constitutive models. The FLAC software has a key advantage because it can use calibrated site-specific constitutive models. Earlier deformation analyses using a hyperbolic constitutive model for the foundation fine-grained materials did not properly represent the modulus and strength reduction and predicted extremely large permanent deformations. Cyclic triaxial laboratory tests using high-quality samples and in situ vane shear tests were used to calibrate the FLAC constitutive model herein. The resulting FLAC analysis of the unremediated dam predicted an upstream slope toe deformation of about 0.6 m, a crest settlement of about 0.6 m, and a downstream slope toe deformation of about 1.5 m using the design ground motion. Based on the estimated permanent deformations and other factors, it was decided that the anticipated upstream slope and crest deformations were tolerable and only the downstream slope had to be remediated to protect the downstream seepage control system.

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