摘要
本文采用数值计算方法,对圆钢管混凝土压弯构件荷载-位移滞回关系曲线进行了理论分析。理论计算结果与实验结果吻合良好。基于理论模型,分析了各参数,如构件轴压比、长细比、截面含钢率和材料强度等对圆钢管混凝土压弯构件荷载-位移滞回曲线的影响。最终提出一种圆钢管混凝土压弯构件荷载-位移滞回模型及位移延性系数的简化计算方法。
Numerical method is used to analyze the load-displacement hysteretic behaviors of concrete-filled circular steel tubular beam-columns in this paper. The analytic results agree well with the experimental ones. Based on theoretical model, influences of several parameters, such as axial load level, slenderness ratio, steel ratio and strength of the materials on the load displacement hysteretic curves are analyzed. Finally, a kind of load-displacement hysteretic model and simplified calculating method for the ductility coefficient of concrete-filled circular steel tubular beam-columns are put forward.
出处
《地震工程与工程振动》
CSCD
北大核心
2003年第6期117-123,共7页
Earthquake Engineering and Engineering Dynamics
基金
福建省重大科技项目(2002H070)资助.
关键词
钢管混凝土
圆形截面
滞回性能
滞回模型
延性系数
concrete-filled steel tube
circular section
hysteretic behaviors
hysteretic models
ductility coefficient
