Three Demention Finite Element Static And Dynamic Analysis For Reservoir Intake Tower-Base Structure

Temperature driving strength reduction FEM for stability analysis of reservoir intake tower-base complex structure was studied on the basis of slope stability due to gravity. To validate the temperature driving strength reduction FEM, a comparison calculation is made for reservoir intake tower-base complex structure under the given conditions by using hydrostastic overloading method, the nodes in different places are traced and got their curves of currentwise displacement vs. time, at the same time, the PEEQ(equivalent plastic strain) of the whole structure and the convergence or disvergence of the computation are also been traced so the limit states of the structure were defined from various angles, at last got the factor of safety and analysis the possible factor that may lead the collapse of the structure. The analysis results show that the calculated results gained from temperature driving strength reduction FEM was closed to that from hydrostastic overloading method. Temperature driving strength reduction FEM is more efficient than traditional strength reduction FEM.Secondly, this paper analyzed the natural vibration properties analysis of intake tower-base structures and gets the natural vibration frequency, natural vibration period and models of the structure. The dynamic transient response of the structure under the given conditions was also analysed. The validity and effectiveness of obtained results are verificated in the other projects, it provides an important reference for the seismic design and theoretical basis for prediction and verification of the other similar intake towers.