卡伦三号大坝结构安全性评价及有限元模型的仪器和现场观测标定

H. Mirzabozorg , M.A. Hariri-Ardebili , M. Heshmati , S.M. Seyed-Kolbadi
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引用次数: 14

摘要

本文在微测测量和仪器的基础上,对卡伦三号双曲拱坝的综合有限元模型进行了标定。通过瞬态热分析得到了混凝土的热性能,并与温度计测得的结果进行了比较。热分析的特征包括空气温度、水层温度和暴露表面上的太阳辐射。结构标定特征包括坝体内部的热分布、大坝自重、静水压力和施加在大坝-水库-基础系统模型上的泥沙荷载。有限元模型校准提供了与大坝当前状态相关的最新信息,可用于进一步的安全评估。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Structural safety evaluation of Karun III Dam and calibration of its finite element model using instrumentation and site observation

In the present paper, a comprehensive finite element model of Karun III double curvature arch dam is calibrated based on the micro geodesies measurements and instrumentation. Thermal properties of concrete are obtained by transient thermal analysis and the results are compared with those obtained from thermometers. Thermal analysis features include air temperature, water layers temperatures, and the solar radiation on the exposed faces. Structural calibration features include thermal distribution within the dam body, dam self-weight, hydrostatic pressure, and silt load applied on the model of dam–reservoir–foundation system. Finite element model calibration provides updated information related to the current dam status and can be used for further safety evaluations.

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