摘要
采用三支杆模型建立了填充墙框架结构的力学模型,分别对两类填充墙框架结构和纯框架结构进行了两种常规侧向力加载模式下的静力弹塑性分析,研究了结构的基底剪力-顶点位移关系曲线、性能点处结构的层位移和层间位移角以及塑性铰的发展情况。计算结果表明,填充墙的加入使结构抗侧移能力和承担的剪力显著增大,填充墙的不合理布设使结构出现薄弱层,易导致结构整体倒塌。在结构抗震设计中,应考虑填充墙与框架结构协同工作。
The mechanical model of infifled frame structure is established by adopting the three-strut model. Pushover analysis with two common lateral load patterns on two types of the infilled frame structures and the bare frame structure is carried out in this paper. The analysis results, including the base shear to top displacement curves, storey displacement and interstorey drift of the performance points, and the development of the plastic hinges, are compared and analyzed. The analysis results show that the abilities of the resistance to lateral displacement and the bearing to shear force of the structures are significantly increased for the influence of the infilled walls. It also shows that the weaker storey is formed due to the unreasonable layout of infilled walls, and thus leads to the collapse of the whole structures. The cooperative work between infilled walls and frames should be considered in the seismic design of buildings.
出处
《工程抗震与加固改造》
北大核心
2013年第3期10-15,共6页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金资助项目(51278129)
关键词
填充墙框架结构
纯框架结构
刚度
抗震性能
静力弹塑性分析
infilled frame structure
bare frame structure
stiffness
seismic performance
pushover analysis
