Research On Performance Based Seismic Analysis Performance Of Concrete Frame Structures

The performance-based of the building structure seismic design theory is a new trend in recent years in the seismic design theory,and it aroused strong repercussions in the field of engineering structure and the strong interest of the structural engineers and scholars。 All the scholars and specialists carried out theoretical research and practical analysis actively,and ma de great progress。From the perspective of earthquake hazards in recent years,to ensure life safety code for seismic design theory reduces the casualties, but the resulting economic loss is often beyond the scope of people to bear。Under this background, the proposed based on the performance of seismic design theory has became the world’s countries the main direction of seismic code revision。This paper reviewed the development course of seismic design of building structures, and expounded in detail based on the performance of the existing problems and the development trend of seismic design theory and the principle of static elastoplastic Pushover analysis and realization ways and so on。It introduced several basic seismic design method of based on displacement,and expounds the direct displacement based seismic design theory。It designed a reinforced concrete frame structure of eight floors under different level earthquake,at the same time, the structure of the Pushover analysis development sequence of plastic hinges,the displacement and interlayer displacement angle of floor and the design results。Then by loadi ng different lateral mode of horizontal load on the structure static elastoplastic to analysis and compare different loading modes on the result of structural analysis, and carry on the compare son and analysis。By means of eight floors reinforced concrete frame structure design example,we can see that the interlayer displacement angle as structure performance level quantitative indicators can effectively control the seismic performance of structure, and control the deformation of structure in the range of target displacement;However, as the improvement of seismic fortify cation level,in order to satisfy the requirement of the structure deformation, we have to enlarge section area or improve the rate of steel appropriatly。Through the calculation results of different lateral loading model for comparative analysis shows that different lateral mode on its influence on the final design result,as the seismic fortification level is quite high,influence gradually become bigger 。 according to the requirement of owners choose different lateral pattern to design the structure。At the same time,to the mass and stiffness along the height direction structure remains to be further in-depth study。...