摘要
柱端塑性铰是框架结构梁铰破坏机制的一个重要特征。钢管混凝土框架结构极限破坏是由柱端塑性铰导致的。基于低周反复荷载作用下钢管混凝土框架结构抗震性能的模型试验,对钢管混凝土框架结构的柱脚延性进行研究。结果表明:钢管混凝土框架结构在低周水平反复荷载作用下,柱脚处钢管的环向应变屈服是框架柱塑性铰形成的判别标准;柱脚延性系数要大于整体框架的延性系数。
The plastic hinges in the column end leaded to limit rupture of frame structure, and they were important characteristics of beam-hinge failure mechanism on frame structures. Based on the model experiment on the seismic behavior of concrete-filled steel tubular （CFST） frame structure under vertical stable loads and lateral cyclic loads, the ductility of column foot in CFST frame was analyzed. Analysis results showed that the hoop stress yield of steel tube was judgment criterion on the form of plastic hinge in the column foot. Ductility factor of the column foot was bigger than that of the integral frame structure.
出处
《武汉理工大学学报》
EI
CAS
CSCD
北大核心
2006年第1期55-58,共4页
Journal of Wuhan University of Technology
基金
湖北省自然科学基金(2003Z0903)
关键词
钢管混凝土
框架结构
柱脚
延性
concrete filled steel tubular
frame structure
column foot
ductility
