Analysis Of Interaction Of Soil With Slope-Foundation-Frame Structure During Earthquake

China is a variety of terrain,the vast mountain area has become a prominent feature of our country,located in the central Pacific seismic belt and the Eurasian seismic belt,so that our country has become a multi earthquake country,the earthquake is very active.The earthquake brings great damage,in the course of the earthquake,the building structure has suffered serious damage,serious threat to people's life and property safety.With the development of social economy,the growing population,the construction and development of mountainous areas are becoming more and more important.In the development and construction of mountainous area,the soil of the slope is one of the main forms of the soil.In real situation,the soil,the foundation,the upper structure were interacted,influenced and connected with each other,they were an inseparable organic whole.On the basis of the reliability of the earthquake resistant design,in order to facilitate the calculation,the seismic design of the foundation is often assumed to be a rigid soil,only to analyze the dynamic impact of the earthquake on the superstructure,ignoring the interaction between the soil,the foundation and the superstructure.Therefore,it is necessary to consider the interaction between the soil,the foundation and the superstructure.Based on the theory and method of domestic and international related theories and methods,this paper uses ABAQUS finite element analysis software to analyze the seismic response of the soil with the slope.(1)The basis of a large number of domestic and foreign literature,the paper simply describes the current situation of the research on the soil,the foundation and the superstructure.The basic theory of the interaction between the soil,the foundation and the superstructure is described in detail.(2)The three-dimensional finite element model of the soil,box foundation and superstructure is built with ABAQUS finite element analysis software,and the selection of materials,the selection of the element,the processing of boundary conditions,the determination of contact and damping,the selection and processing of seismic wave are introduced in detail.(3)The soil with slope of different distance,box foundation,frame structure seismic response were compared,analysis of different margin model of the upper part of the frame structure of acceleration,acceleration amplification coefficient,draw in earthquake margin on the upper part of the frame effect.(4)The soil with slope of different distance,box foundation,frame structure seismic response were compared displacement analysis of upper frame structure models with different margins when history curve,layer between angular displacement results,drew margins of the interlayer displacement of the upper frame structure.(5)Three model were established: the frame model,frame model with box foundation,superstructure model with soil and foundation.The earthquake effect of different models were analyzed.