By applying non-linear finite element method for reinforced concrete，the steel-lined reinforced concrete penstock structure of Three Gorges Hydroelectrical Plant is calculated，the loading effect under different steel disposition obtained and the corresponding analysis conducted．%采用钢筋混凝土非线性有限元方法，对三峡水电站钢衬钢筋混凝土压力管道结构进行了计算，求得了各种钢材配置下的荷载效应并进行了相应的分析。
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