麒麟观双曲拱坝地震动应力分析
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摘要
基于三维有限元数值模拟技术,利用ANSYS软件中的模态分析和反应谱分析,对麒麟观双曲拱坝进行了地震响应计算分析,研究了该拱坝的动位移、应力分布规律。并且根据概率极限状态设计原则,对大坝进行了抗震安全复核计算。结果表明大坝满足抗震要求,但局部薄弱部位需采取加固措施。最后还给出了一些建议,可供同类工程设计、施工参考。
Based on the 3-D finite element numerical simulation technique,the seismic response of the Qilinguan double-curvature arch dam is calculated and analyzed using the modes analysis and the response spectrum analysis of the ANSYS software,from which the dynamic displacement and the dynamic stress of the arch dam are knowed.And the earthquake resistance safeties check calculation is done according to the probability limit state design principle.The results showed the dam to meet the seismic requirements except that a part of the weakness places should be reinforced.Finally,the article also gives some suggestions for the design,construction and similar reference works.
Based on the 3-D finite element numerical simulation technique,the seismic response of the Qilinguan double-curvature arch dam is calculated and analyzed using the modes analysis and the response spectrum analysis of the ANSYS software,from which the dynamic displacement and the dynamic stress of the arch dam are knowed.And the earthquake resistance safeties check calculation is done according to the probability limit state design principle.The results showed the dam to meet the seismic requirements except that a part of the weakness places should be reinforced.Finally,the article also gives some suggestions for the design,construction and similar reference works.
引文
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