摘要
基于国内多层混凝土框架结构的试验数据,建立混凝土框架柱曲率延性与结构整体位移延性需求的定量关系。收集国内32组梁铰屈服机制和破坏机制为主的多层混凝土框架结构系统延性系数和相应楼层位移延性系数的试验数据,分析试验数据的统计特性;通过经典解析关系由楼层位移延性系数得到框架柱曲率延性系数,并建立了框架柱曲率延性与结构系统延性的函数关系。拟合的幂函数模型与样本试验数据的相关系数R=0.775,非线性数值算例结果表明建立函数模型能够指导混凝土框架柱单元的最大延性控制设计。
Based on the domestic experimental data of multi-storey concrete frame structures, the relationship between curvature ductility of concrete frame column and structural displacement ductility is proposed. 32 sets experimental data of system displacement ductility and the corresponding storey displacement ductility, which are mainly obtained from beam hinge yield mechanism and failure mechanism, are collected, and statistical property of system placement ductility is analyzed. Curvature ductility of concrete frame column is derived from storey displacement ductility factor by the classical analytic solution, and relationship between curvature ductility of frame column and structural displacement ductility is established. Correlation coefficient （R） for fitting power exponent function model and sample test data is 0. 775. Results of nonlinear numerical analysis examples show that statistical function model is able to direct the ductility control design of concrete frame column.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第1期93-98,104,共7页
Journal of Chongqing University
基金
中国博士后科学基金项目(20100480757)
亚热带建筑科学国家重点实验室基金项目(2010KB13)
教育部高等学校博士学科点专项科研基金项目(20094301120001)
关键词
混凝土框架
曲率延性
系统位移延性
试验数据
concrete frame
curvature ductility
structural displacement ductility
experiment data
