某三维空间刚架结构抗震及稳定性能分析

介绍——采用五边形空间刚架的工程,考虑建筑功能的需要,钢柱沿建筑外围布置并与底层钢筋混凝土框架柱铰接,为了增加结构抗扭刚度和满足层间位移角的要求,在柱间设置支撑.屈曲约束支撑在小震下能够为结构提供适当的侧向刚度,在中震和大震下具有良好的耗能减震性能.阐述了屈曲约束支撑的设计计算方法,并比较分析了屈曲约束支撑在常遇地震、罕遇地震作用下抗震性能以及竖向荷载作用下的稳定承载力.

Seismic Performance and Stability Analysis of a 3D Space Rigid-Frame Structure

This project is a pentagon space rigid-frame structure.Considering the function of the architecture, the steel columns along the external wall of the building were set and were pinned with the underlying reinforced concrete columns.In order to increase its torsional rigidity and satisfy the requirements of drift angle, supports were set between columns.Because the buckling restrained brace provides appropriate lateral stiffness for the structure in frequent earthquake and has good energy dissipation capacity in rare earthquakes,so it is applied to this project.The design and calculation methods of the buckling restrained braces,and analysis method of the seismic performance in frequent earthquake and rare earthquake were dissused in this paper. The stability of the carrying capacity under vertical load has also been studied.