（清华大学土木系结构工程与振动教育部重点实验室  北京 100084）

［提要］  建立了钢筋混凝土（RC）柱屈服位移角和极限位移角的计算式，对141个试件的试验数据进行分析，得到了计算式的相关参数。RC柱的屈服位移角与受拉钢筋屈服强度、柱截面高度和轴压比有关，极限位移角与轴压比、配箍特征值、剪跨比等有关，与纵筋配筋率关系不大。提出了RC柱基于位移的变形能力设计方法。

［关键词］  钢筋混凝土柱  基于位移抗震设计  屈服位移角  极限位移角  变形能力

Displacementbased Deformation Capacity Design of RC Columns/Qian Jiaru, Xu Fujiang（Key Laboratory for Structural Eng. and Vibration of the Ministry of Education, Department of Civil Engineering, Tsinghua Univ., Beijing 100084,China）

Abstract:A model is developed to predict the drift ratios of reinforced concrete columns at yielding and at ultimate respectively, and a set of test data is used for regression analysis of the model, and expressions for the drift ratio of RC columns are evaluated. The drift ratio of RC columns at yielding is related to the yielding strength of longitudinal bars, depth of column cross section and axial force ratio. The drift ratio of RC columns at ultimate is related to axial force ratio, stirrup characteristic value and shearspan ratio, and has little to do with the longitudinal reinforcement ratio. According to the expression of drift of RC column at ultimate, displacementbased deformation capacity design method of RC columns is proposed.