摘要
为研究钢管混凝土组合柱的变形能力,建立了屈服曲率和极限曲率的计算式。屈服曲率与受拉纵筋的屈服应变、柱截面高度、轴压比、配箍特征值和钢管含管特征值有关,极限曲率与柱截面高度、轴压比、配箍特征值和含管特征值有关。通过对58个组合柱试件试验数据分析,得到了计算式的相关参数,由此可计算组合柱的屈服位移角和极限位移角,计算结果与试验结果符合良好。
Formulae for predicting the yielding and ultimate curvatures have been developed to study the deformation capacity of steel tube-reinforced concrete（RC） composite columns.The yielding curvature is related to the yield strength of longitudinal bars,sectional depth of column,axial compressive force ratio,stirrup characteristic value and steel tube characteristic value.The ultimate curvature is related to the sectional depth of column,axial compressive force ratio,stirrup characteristic value and tube characteristic value.Test data of 58 specimens are adopted for regression analysis,and parameters of the formulae are determined.The expressions for the yielding and ultimate drift ratios of the steel tube-RC composite column are obtained.The calculated results have good agreement with the test results.
出处
《世界地震工程》
CSCD
北大核心
2010年第2期42-47,共6页
World Earthquake Engineering
基金
国家自然科学基金重大研究计划重点项目(90815025)
关键词
钢管混凝土组合柱
屈服位移角
极限位移角
变形能力
steel tube-reinforced concrete composite column
yielding drift ratio
ultimate drift ratio
deformation capacity
