摘要
文中首先建立了钢管与核心混凝土界面的粘结-滑移滞回模型、考虑包辛格效应的钢材单轴滞回模型和考虑矩形钢管约束效应后内填混凝土的单轴应力-应变滞回模型。在截面纤维模型的基础上,建立了考虑界面粘结-滑移的矩形钢管混凝土柱分析模型,用Fortran语言编制了相应的全过程分析程序。考虑轴压比和截面高宽比两个因素,对19个矩形钢管混凝土试件进行了数值模拟计算,并对荷载-位移滞回关系进行了初步的理论分析。
The bond-slip hysteretic models of interface of concrete filled rectangular steel tube （CFRST） is put forward. The hysteretic material models of in-filled concrete and steel considering Bauschinger effect are built. The analytical model for CFRST columns is also constructed. Based on section fiber model, the full process hysteretie analysis program for CFRST columns considering the bond-slip effect of the interface is accomplished. 19 specimens of CFRST under cycle loading are numeucally tested with main parameters of axial compression ratio and section height to width ratio. Theoretical analysis of the load-deformation hysteretic behavior of concrete - filled rectangular steel tubular columns is conducted.
出处
《世界地震工程》
CSCD
北大核心
2009年第1期138-142,共5页
World Earthquake Engineering
关键词
本构模型
矩形钢管混凝土柱
滞回性能
轴压比
长宽比
constitutive model
concrete-filled rectangular steel tubular column
hysteretic behavior
axial compression ratio
section height to width ratio
