Structural Analysis Of A Hydraulic Dam Foundation Based On ANSYS

Water,as a factor of production,plays a role as the source of life and the basis of ecology at the beginning of the development of human civilization.It exists as a material basis in the process of human society’s reproduction.Therefore,water is closely related to our daily life.However,water in a natural undeveloped state is very difficult for people to use.Therefore,a special course for the application and development of natural water resources-water conservancy project came into being.Its basic working mode is to control the water flow to achieve the effect of controlling the water volume.In this paper,ANSYS software is used to carry out finite element analysis on the hydraulic dam in an engineering example,and a three-dimensional finite element model of the hydraulic dam bottom plate and the foundation soil around it is established.Then the ideal elastoplastic D-P model is used to determine the constitutive relation of soil stress and strain.(1)The nonlinear static analysis method is used to carry out static analysis on the hydraulic dam under the two working conditions of the completion period and the normal water storage level,and the static safety of the hydraulic dam is checked by comparing the stress and strain results of the hydraulic dam bottom plate under the two working conditions with the design standards.(2)On the basis of static analysis,analyze the natural vibration characteristics of hydraulic dam caused by earthquake,extract the key vibration mode and natural vibration frequency of dam bottom plate,adopt the mode superposition method,and fit the response spectrum curve of acceleration earthquake,use the response spectrum analysis method in ANSYS software to carry out earthquake analysis on hydraulic dam,and compare the analysis results with the standards of relevant sluice seismic design codes to ensure the earthquake resistance of hydraulic dam.(3)The method of cement-soil mixing piles is adopted to optimize the foundation of the hydraulic dam bottom plate,and finite element analysis is carried out on the treated foundation,so as to extract the stress and strain results of the treated dam bottom plate under different working conditions of the completion period and the normal water storage level.By comparing the stress and strain results of the hydraulic dam before and after foundation treatment,it is obtained that the settlement of the hydraulic dam under the working conditions of the completion period and the normal water storage level is reduced,and the stability of the hydraulic dam is improved.