Dynamic Response Analysis On Culvert Sluice

In recent years,for many earthquakes happened in China,to the state and people’s lives and property caused a great loss.Especially in water conservancy and hydropower project,if the sluice and accessory outlet facilities is destroyed by earthquake,it will lead to the reservoir water level rising,and threaten the safety of the whole project.In addition,the damage of large power facilities,will result in power interruption,caused great iMPact on the power grid and adverse to the earthquake relief,even also lead to more serious secondary disasters.Therefore,anti-seismic capacity of sluice structures has attracted more and more attention.This paper,based on the ANSYS software,mainly introduces the sluice structure dynamic analysis of development status and the basic theory.The DaCheJi culvert sluice,in the middle and lower reaches of the Yellow River,as an example to study the dynamic characteristics of structure under the condition of different lockage water height level,and dynamic analysis theory and method.The main research contents as follows:1.It introduces the basic theory of the dynamic response analysis,the theory and method of finite element analysis,dynamic finite element,also the basic theory of response spectrum method and dynamic time history analysis method of the modal decomposition.The ANSYS development technology was studied.By using APDL parametric design language was realized in solving the dynamic water pressure,namely the finite field addition mass method.2.To set the DaCheJi sluice as an example,a three-dimensional finite element model was established and the problem of dynamic interaction between structure and water was solved.According to the finite field addition method,the water quality of different height influence on the vibration characteristics of sluice structure was calculated.3.By means of response spectrum of modal combination method and the time-history analysis method,the dynamic response of DaCheJi sluice are calculated.the dynamic displacement and dynamic stress variation rules of the sluice are analyzed.By coMParing the calculation results of two kinds of methods.The research results accord with general rules and can actually provide a reference value for the engineering.4.According to the specification,three acceleration wave of El-Centro wave,tangshan wave and artificial seismic wave are selected to do time history analysis.By coMParing the results of the three different waves,some useful results are drawn.