《Geotechnical Engineering》刊登“Karun III混凝土拱坝的应力渗流耦合分析”

作者：Lotfi, Vahid，Hosseinzadeh, Arash，Soroush, Abbass，Nobarinasab, Mahdi

刊物：《Geotechnical Engineering》，2013年10月，第166卷5期，483-501页

关键词：大坝，拦河坝和水库，基础，应力分析，应力分析和材料试验

摘要：混凝土拱坝的响应受基岩的力学行为影响很大。由于混凝土拱坝坝体刚度比基础和坝肩低，因此其对坝基的位移敏感性很高。渗透力是一种广泛分布于基岩中的荷载，对坝体的位移和应力有显著的影响。本文以高205m的KarunIII双曲拱坝为案例，对坝体进行有效应力分析，比较了分析结果与仪器记录的值，研究了一些基础的输入参数对坝体的影响。随后，基于初始的研究结果校核基本参数，最后采用修正参数对KarunIII的有效应力进行分析。

Coupled stress-seepage analysis of Karun III concrete arch dam

Authors：Lotfi, Vahid，Hosseinzadeh, Arash，Soroush, Abbass，Nobarinasab, Mahdi

Journal：Geotechnical Engineering. Oct2013, Vol. 166 Issue 5, p483-501. 19p

Keyword：dams, barrages & reservoirs，foundations，stress analysis，stress analysisth & testing of materials

Abstract：The response of a concrete arch dam is very much affected by the mechanisms of foundation rock behavior. This type of dam is highly sensitive to displacements of its foundation owing to the low stiffness of the dam compared to the displacements of its foundation and abutments. Seepage is a load type which is distributed widely within foundation rock. Therefore, it could have important effects on displacements and stresses in the dam. In this paper, the Karun III double-curvature, 205 m high arch dam is selected as a case study. Effective stress analyses are carried out for the dam. The analysis results are compared with values recorded by instruments. Furthermore, the effects of some basic input parameters on the response of the dam are investigated. Subsequently, basic parameters are calibrated based on the initial investigation results, and the effective stress analysis is carried out for the Karun III dam by employing the modified parameters.

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