High Rise Concrete Structure Based On The Properties Seismic Performance Evaluation

According to our country existing seismic evaluation theory, the existing building structure seismic evaluation are basically follows through the small earthquake elasticity bearing capacity calculation and ductility check of construction methods, because the seismic evaluation method for the whole structure is qualitative analysis, not accurate to the structure of the component layers, so it can not accurately reflect building real seismic bearing capacity, evaluation result error is debatable. And with the construction of earthquake-resistant fortification standards continue to improve, the existing buildings aseismatic capacity determination of need more detailed and quantitative accurate to the member level analysis method of seismic assessment.Based on the analysis of domestic and international performance based seismic design thought and method on the basis of research results, an in-depth discussion of the static elastic-plastic (Pushover) in the analysis of lateral load pattern, structure of vertices the determination of target displacement, the effect of higher modes and structure calculation model, discusses the ATC-40capacity spectrum method the basic ideology and the basic principle and multi degree of freedom system is transformed into an equivalent single degree of freedom system method, and the establishment of seismic demand curve.Using Midas Gen structure finite element analysis software, the existing buildings for seismic assessment. And the" standard for seismic appraisal of buildings" are using the traditional evaluation method and ATC40recommended by the combination of Chinese current seismic code capacity spectrum method the evaluation results were compared, accurate assessment of the structure under strong earthquake performance, the structural member under seldomly occurred earthquake accurate performance displacement.