Feasibility Study of Dez Arch Dam Heightening Based on Nonlinear Numerical Analysis of Existing Dam

Archives of civil engineering

H. Mirzabozorg Ph.D.Corresponding authorDepartment of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran, 15875-4416, Vali-asr St., Tehran, Iran, Tel: [phone]EmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹  M. A. Hariri-ArdebiliPh.D. Student, Department of Civil Environmental and Architectural Engineering, University of Colorado, Boulder, CO, USA, ECCE 168, UBC 80309-0428, Boulder, CO, USAEmailOther articles by this author:De Gruyter OnlineGoogle Scholar² 

[1] Department of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran, 15875-4416, Vali-asr St., Tehran, Iran, Tel: [phone];Ph.D. Student, Department of Civil Environmental and Architectural Engineering, University of Colorado, Boulder, CO, USA, ECCE 168, UBC 80309-0428, Boulder, CO, USA

关键词: Keywords: Arch dam;    Numerical model;    Nonlinear analysis;    Safety evaluation;    Load combination;   

DOI  :  10.2478/ace-2013-0002

学科分类：建筑学

来源: Polska Akademia Nauk * Instytut Podstawowych Problemow Techniki / Polish Academy of Sciences, Institute of Fundamental Technological Research

【 摘 要 】

The Dez dam was commissioned in 1963 and since sediments accumulated in the reservoir up to an elevation of approximately 15m below the intake of the power tunnel. One of the possible measures to improve operation of the reservoir is by heightening of the existing dam. This paper describes the conducted procedure for static and thermal calibration of this 203m dam in Iran based on micro geodesies measurements. Also the nonlinear response of existing dam is investigated under maximum credible earthquake ground motions considering joint behavior and mass concrete cracking and safety of dam is evaluated for possible heightening. For thermal calibration of provided numerical model, transient thermal analysis was conducted and results were compared with thermometers records installed in central block. In addition, for static calibration; thermal distribution within dam body, dam self weight, hydrostatic pressure and silt load applied on the 3D finite element model of dam-reservoir-foundation were considered. Results show that the distribution of stresses will be critical within dam for heightening case under seismic loads in MCL.

【 授权许可】

Unknown