Seismic Response Analysis Of The Silo Wall Of Reinforced Concrete Silo

The silo as a equipment which stores the disperses material in agriculture, mining,building materials, chemical industry, electric power and other fields are widely used, andwhich has the such as structure simple,easy to operate, protection environment and reducedoccpying land area and so on.In a such our much earthquake country,In-depth study of theseismic performance of the silo structure.Carrying out the seismic response analysis of thesilo structure of the earthquake is very necessary, And this research regarding guarantees ourcountry energy security strategy realization,reduces the earthquake harm,and guarantees theenergy security effective supplies after the earthquake burst characteristics disaster have theextremely vital significance.In this article, it takes the practical engineering as the basis, with the large-scale finitesoftware Ansys as the foundation, uses the finite element numerical simulation method,whichconsiders the different stores-material operating mode, constucts to the reinforced concretesilo and carries on the static response analysis and earthquake response analysis. Taking theSolid65unit as the foundation, using surf154elements to simulate the different storageconditions, then can establish the reinforced concrete finite element analysis model, carry onthe static finite element analysis to it, obtain the reinforced concrete large-squat-silo’sstress,strain and distortion distributed rule when the silo is full,and analyze this kind ofstructure’s stress-weak-position.Through to the structure modal analysis, obtained thestructure dynamic characteristics, vibration frequency and period of the silo, the results showthat, The first four vibration modes figure are horizontal vibration, the main vibration of thestructure is horizontal vibration,The first cycle of structure is small, the rigidity is big;structure along the two principal directions of mass and stiffness distribution is symmetrical,did not appear obvious torsion effect.By use of the time interval analytic method,inputEl-centro earthquake wave,Taft earthquake wave,and artificial earthquake wave,carry on thedynamical finite element analysis to the model structure,obtain the crown of the structuredisplacement time interval curve under earthquake function,discover the time which is thebiggest displacement occurs,and draw up the whole structure stress chart and the wholestructure distortion chart in this time. In contrast to the structure’s apex displacement underthese three earthquake wave. The displacement is biggest which is under the Taft earthquakewave,the free vibration period of the structure is close to the predominant period of Taft earthquake wave,considering the different stores-material operating mode and on the structureof carrying on the earthquake response analysis under the earthquake wave function.We canobtain the crown of the structure displacement time interval curve in different feed height inthe silo. On the basis the time which is the biggest displacement occurs and draw up thewhole structure stress chart and the whole structure distortion chart in this time, analyzes theweak position of structure under earthquake function, Discusses the stress variation anddynamic response characteristics of this kind of structure’s earthquake function under thedifferent stores-material operating mode.which provides some theoretical basis to this kind ofstructural design,Provides a reference for the engineering design.