基于pushover分析的体育馆多层钢结构抗震性能研究

Study on Seismic Behavior of Gymnasium Multi-storied Steel Structure Based on Pushover Method

针对某高校多层钢框架体育馆楼板大开洞引起质量和刚度不均匀问题,本文运用大型有限元分析软件,考虑支撑设置情况,对该结构进行了静力非线性pushover分析,通过塑性铰的发展情况、基底剪力顶点位移曲线、层间位移角等,分析了该结构大震情况下的倒塌机理,得出了该结构的抗震性能目标.

Large openings on floors of the multi-storied university gymnasium steel structure leads to the inhomogeneity of its mass and stiffness. In view of brace setting, nonlinear static push- over analysis method is applied to the structure with one large-scale finite element analysis soft- ware. According to the occurring sequence of the plastic hinges, the relationship curve between base shear and top displacement and the inter-story displacement angle etc. , collapse mechanism of the structure under serious earthquake is analyzed, and thereby the anti-quake performance target of the structure is deduced.