Location
New York, New York
Date
15 Apr 2004, 1:00pm - 2:45pm
Abstract
Stress strain analysis based on Biot’s consolidation theory is performed for Nuozhadu dam, which is a high rock-fill clay-core dam located in the Langcangjiang River in Yunnan province, China. Attention is mainly focused on arching effect and possibility of hydraulic fracturing of the core. Equivalent linear approach is employed to evaluate the seismic response of the dam under design earthquakes, and two empirical formulas relating residual shear and volumetric strain to cyclic stress and strain history are proposed to evaluate the permanent deformation. It is found that: 1) the modulus ratio of the clay in the core to rockfills around is the main factor controlling the severity of arching effect, 2) hydraulic fracture would not occur according to the criterion of effective stress, and 3) the permanent deformation that is likely to occur is acceptable under the condition of design earthquakes.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2004 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Wang, Gang; Zhang, Bing-Yin; and Zhang, Jian-Min, "Static and Dynamic Response Analysis of a High Rock-Fill Dam with a Clay Core" (2004). International Conference on Case Histories in Geotechnical Engineering. 20.
https://scholarsmine.mst.edu/icchge/5icchge/session02/20
Static and Dynamic Response Analysis of a High Rock-Fill Dam with a Clay Core
New York, New York
Stress strain analysis based on Biot’s consolidation theory is performed for Nuozhadu dam, which is a high rock-fill clay-core dam located in the Langcangjiang River in Yunnan province, China. Attention is mainly focused on arching effect and possibility of hydraulic fracturing of the core. Equivalent linear approach is employed to evaluate the seismic response of the dam under design earthquakes, and two empirical formulas relating residual shear and volumetric strain to cyclic stress and strain history are proposed to evaluate the permanent deformation. It is found that: 1) the modulus ratio of the clay in the core to rockfills around is the main factor controlling the severity of arching effect, 2) hydraulic fracture would not occur according to the criterion of effective stress, and 3) the permanent deformation that is likely to occur is acceptable under the condition of design earthquakes.
