The Econmical Analysis And P-Delta Effect Of The Multi-story Building In The High Intensity Region

The multi-story'building is very normal in our country, although there are more and more tall buildings, it still has its advantages and applicability. It has been throughed more than twenty years since its born. Along with the rapid development of our country's economy,its material has been changed from brick to reinforcement concrete and steel, and its structuretype has been changed from the brick blend structure to the reinforcement concrete structure or the steel structure. Although in the low intensity region or in the high intensity region, the popular structuretype for the multi-story building is the frame. But we all know the multity-story can't afford too much lateral loads because of its weak stiffness. So in the high intensity region, use the frame structure is not a econmic and reasonable way. Also, P-Delta effects play an important roal in the exactly analysis method, but in the muti-story'design method, we often neglect the P-Delta effects.This paper do the two parts work to aim at the multity-story buildings, one is designing two kinds of structure (the reinforcement concrete frame structure and the reinforcement concrete frame-steel bracing structure) to compare its internal stress,concrete and steel reinforcement consumption;the other is compare its first order and second order elastic inner stress and sidesway. Finaly,this paper researched some basic things influnce the P-Delta effects.