Techno Press
You logged in as Techno Press

Coupled Systems Mechanics
  Volume 2, Number 1, March 2013, pages 85-110
DOI: http://dx.doi.org/10.12989/csm.2013.2.1.085
 


Strain-based seismic failure evaluation of coupled dam-reservoir-foundation system
M.A. Hariri-Ardebili, H. Mirzabozorg and A. Ghasemi

 
Abstract     [Full Text]
    Generally, mass concrete structural behavior is governed by the strain components. However, relevant guidelines in dam engineering evaluate the structural behavior of concrete dams using stress-based criteria. In the present study, strain-based criteria are proposed for the first time in a professional manner and their applicability in seismic failure evaluation of an arch dam are investigated. Numerical model of the dam is provided using NSAD-DRI finite element code and the foundation is modeled to be massed using infinite elements at its far-end boundaries. The coupled dam-reservoir-foundation system is solved in Lagrangian-Eulerian domain using Newmark-B time integration method. Seismic performance of the dam is investigated using parameters such as the demand-capacity ratio, the cumulative inelastic duration and the extension of the overstressed/overstrained areas. Real crack profile of the dam based on the damage mechanics approach is compared with those obtained from stress-based and strain-based approaches. It is found that using stress-based criteria leads to conservative results for arch action while seismic safety evaluation using the proposed strain-based criteria leads to conservative cantilever action.
 
Key Words
    dam-foundation interaction; massed foundation; strain-based criteria; damage mechanics; infinite elements
 
Address
M.A. Hariri-Ardebili : Department of Civil Environmental and Architectural Engineering, University of Colorado at Boulder, P.O. Box 80309-0428, Boulder, CO, USA
H. Mirzabozorg and A. Ghasemi: 2Department of Civil Engineering, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran
 

Techno-Press: Publishers of international journals and conference proceedings.       Copyright © 2020 Techno Press
P.O. Box 33, Yuseong, Daejeon 305-600 Korea, Tel: +82-42-828-7996, Fax : +82-42-828-7997, Email: technop@chol.com