The Simplified Dynamic Analysis For Structures Of Combined-tall Buildings

Free vibration of combined-tall buildings structures was analyzed and researchedby semi-analytical method of ODE (Ordinary Differential Equation) Solver in thispaper.First the high-rise building frame structure monomer (including mega frame) wassimplified as same section Timoshenko beam based rigid foundation, carries on the freevibration programme analysis. Then put the frame-shear wall structure simplified asvariable cross-section Timshenko beam based on rigid foundation, carries on the freevibration programme analysis.Finally,put the monomer link up the combined-tallbuildings structures. Equally,using ordinary differential equation solver (ODE) as the tool,the combined-tall structure building was analysised for free vibration, and solve out itscycle and frequency, and put the combined-tall structure of the dynamic properties tomonomer comparison, draw some conclusion.The principal work performed by the thesiscan be summarized as follows:(1) Introduced the background and significance of the topics.(2) Discussed the frame structure of the free vibration analysis model, and tosimplify the rules of the frame structure equivalent stiffness;(3) Discussed the frame-shear wall structure analysis model of the free vibration.(4) Control equations and boundary conditions of combined-tall buildingsstructures in analysis of free vibration is derived, the establishment of debugging,works out the vibration frequency and cycle of combined-tall building.(5) Analysis the dynamic properties of the combined-tall building structure,expounds the structure design of key of the combined-tall building structure.The results of analysis and calculation examples with combined-tall buildingstructure show that the simplified analytical model is rational and applicable.Furthermore, the calculation results obtained from the above-mentioned analytical modelwere very close to those of resulted from their corresponding precise models. Therefore asort of quick and simplified analytical method suited the preliminary design and globalbehavior evaluation of tall building structure was presented.