中小型水电站大坝过水通道弹性地基框架分析方法

Analysis Method of Elastic Foundation Frame for Medium and SmalI Hydropower Stations

本文提出的弹性地基框架分析方法特点如下：１、弹性地基使用一些底部固定于刚基上的弹性柱模拟；这些柱与框架一起形成一个新的框架结构体系，该体系用有限杆元法求解。２、可以反映弹性地基深度对框架变形和内力分布的影响。３、分析结构时可以一并考虑结点刚性段的影响和杆件由弯曲、拉或压以及剪切引起的变形作用。

The features of the analysis method advanced in this paper for elasticfoundation frame are as follows:1.The elastic foundation is simulated by using somevertical elastic columns whose bottom are fixed on rigid foundation;these cloumnstogether with the frame form a new structure system,and the system is solved by usingfinite member element method.2.The effect of depth of the elastic foundation on thedeflection and the internal forces distribution of the frame can be reflected.3.The effectof the rigid parts for the nodes together with the deflection of members caused bybending,pulling or pressing and shearing can be considered in analysing the Structure.