轴心压力对Y型偏心支撑钢框架抗震性能的影响

The Effect of Behavior of Y Shape Eccentrically Braced Steel Frames under Axes Pressure

偏心支撑钢框架是在支撑钢框架的基础上改进的一种新型抗侧力体系,该体系结合了中心支撑钢框架强度、刚度高和抗弯框架延性、耗能性能好的优点,是适用于高烈度地震区的一种有效的抗侧力结构体系。同时,由于多高层钢框架的广泛应用,其层数不同将会导致柱轴心压力的不同。本文通过应用ANASYS有限元程序对其在不同轴心压力下的受力性能进行分析。

Eccentrically braced steel frames is a refined lateral-resistant system based on braced frames. It combines the strength and stiffness of concentrically braced frames with the inelastic behavior and energy dissipation of moment-resisting frames. The eccentrically braced steel frames is an effective lateral-resistant structure system which is appropriate for high seismic regions.At the same time, Multi-story steel frame is popular in the high seismic region. But, the different of the number of floors result in the different of the axes pressure.This paper applies ANASYS finite element method to analyze the eccentrically braced steel frames.