Earthquake Under The Action Of High-rise Steel - Concrete Hybrid Structure Time Response Analysis

In this paper, the time interval reaction for tall steel-concrete hybridstructure which under one-dimension and multi-dimension seismic forcewas deeply studied. While calculating the seismic reaction underone-dimension seismic force, adopting the facilitate calculation model oftall steel-concrete hybrid structure combine with the precise integrationmethod, the calculating program was carried out to get the seismicreaction for this strctrue under one-dimension seismic force. It is close tothe result by ANSYS analysis. While calculating the seismic reactionunder one-dimension multi-dimension seismic force, adopting thesimulate model building method in ANSYS, the horizontal and torsionalseismic reaction for nonsymmetry steel-concrete hybrid structure undertwo-dimension horizontal seismic forces are obtained. The influencefactors of structure seismic reaction were also studied. The main contentsare as follows:(1) Contrasting the nine kinds of integral formulas in preciseintegration method, the effective kinds of integral formulas is obtained,and the programming was established to calculate the precisetime-integration. Examples analysis indicate that: The choosing ofintegral formula methods in precise integration method should be respondto the load character, but the Cotes integral formula, Gauss integralformula, Romberg integral formula and repeat integral formula are thebetter integral methods to maintain the high accuracy. If these methodscan not be adopted by condition restrict, the sufficient short time stepshould be choose to keep the sufficient accuracy.(2) Adopting the facilitate calculation model of tall steel-concretehybrid structure, combine with the precise integration method, and thecalculating program is carried out to get the top floor's reaction ofdisplacement, displacement changing by the floor, acceleration,acceleration changing by the floor and interlaminar deflection angle.(3) Contrasting the different modeling methods for shear wall ofsteel-concrete hybrid structure by using international ANSYS software,the characteristics of free-vibration and time interval reaction of this structure are obtained under one-dimension and multi-dimension seismicforce, and extended it to analyse the torsional seismic reaction ofnonsymmetry steel-concrete hybrid structure under two-dimensionseismic forces.(4) With the seismic influence factors analyzed by ANSYS, therugular of structure reaction caused by structure parameters changingwere obtained. It provides some reference for appropriate design.