Static And Dynamic Analysis Of A Sluice Chamber Structure

Sluice is a common building in hydraulic engineering.Its main function is to adjust water level and control flow.As one of the important parts of hydraulic structures,the sluice has brought great benefits to its area.In China,the size of the earthquake has occurred,which not only makes the national economy threatened,but also the safety of people's lives and property to the danger zone.Due to the function and nature of the sluice,its safety and stability are related to the safety of people in some areas.Compared with other buildings,the investment of the sluice is relatively large.When the site where the sluice is located has serious earthquake damage,the project will have safety problems.Such problems can also have a knock-on effect,with secondary flooding,however,causing more damage than the earthquake itself.At present,seismic prediction technology is still in the research stage,in order to make the sluice after the earthquake is still normal operation,foundation stability,so that the sluice floor settlement is uniform,foundation soil liquefaction does not occur,it is necessary to the sluice under the earthquake load of structural analysis and seismic design.In this paper,a three-dimensional finite element model of a spillway five-hole sluice is established by using the finite element software ANSYS and taking the middle hole of the spillway five-hole sluice as the research object.The internal force of the sluice structure will also change when the water level on the floor changes due to the complex structure and large volume of the sluice.In this paper,static analysis under different working conditions is carried out to obtain the most disadvantageous stress state and the maximum settlement of foundation.The results show that the deformation and stress values of the gate chamber are within the prescribed range.On this basis,this paper uses modal analysis and response spectrum theory to carry out seismic analysis of the gate chamber and study its dynamic response law.Through modal calculation,the natural frequency of the gate chamber is extracted and the natural vibration period is calculated.It is concluded that there is no large vibration of the gate under earthquake conditions.The displacement and stress of sluice chamber under the action of transverse seismic load,seismic load and static load are studied,and compared with the static working condition,it is concluded that the stress concentration is caused by the structural geometry and material mutation,and the stress values of other parts are within the limit stress range of the material.The results verify the safety of the sluice design,and the research method can be used for reference in similar projects.