【摘要】 运用三维有限元数值模拟方法对江坪河水电站泄洪坝段闸墩、混凝土锚块及预应力锚索在内的整体模型进行空间应力和变形分析,得到了2种典型工况下的整体位移和应力分布规律。在动力计算中分别采用了振型分解反应谱法和时程动力分析法。时程动力分析时,按规范要求分别输入了El Centro波、Taft波和由规范反应谱合成的人工地震波3种波形。然后对计算结果进行对比分析与总结,研究结果表明,预应力闸墩具有整体稳定性,在各种荷载的组合效应下整个墩体的变形和应力分布满足要求。得出了对设计有指导意义的数值成果,可供施工图设计参考。更多还原

【Abstract】 3D-FEM is applied to space stress and deformation analysis of the overall model on Jiangpinghe Hydropower Staton,which includes spillway pier,concrete block and prestressed anchor cable.the overall displacement and stress distribution of two typical loading conditions are obtained.In dynamic analysis,both the mode-superposition response spectrum method and the time-history analysis method are used.According to the specifications,in the time-history analysis method,El Centro wave,Taft wave and the artificial seismic wave fitted for the design response spectrum are input respectively.Finally,the calculated results are analyzed,and some meaningful conclusions would be referenced for the design,construction and similar projects.The results can be used to check the design of engineering and to guide the construction.更多还原