钢筋混凝土框架错层节点非线性有限元分析  

NONLINEAR FINITE ELEMENT ANALYSIS OF RC STAGGERED JOINT

作　　者：赵德春[1] 李章政[1] 

机构地区：[1]四川大学建筑与环境学院,成都610065

出　　处：《工业建筑》2008年第z1期264-267,共4页Industrial Construction

摘　　要：利用大型通用有限元软件ANSYS,考虑了钢筋与混凝土之间的粘结滑移关系,先采用具有下降段的混凝土本构模型,对完全错开节点和半错开节点进行传力机理分析。再采用《混凝土结构设计规范》(GB50010-2002)附录C中混凝土单轴应力-应变关系,对错开高度分别为0、0.25、0.5、0.75,1倍梁高,在轴压比为0.05和0.25时的节点进行极限承载能力分析。得到了错层节点承载力及粘结滑移随错开高度的变化规律。In this article,taking the bond-slip relationship between reinforcement and concrete into account,with the help of FEM software of ANSYS,analysis of the shear transfer mechanism of full staggered joint and half staggered joint is done by the constitutive model with decline part of concrete.Then,with the constitutive model of 'Code for Design of Concrete Structure'(GB 50010-2002),the calculation of the ultimate carrying capacity of staggered joints is also done whose staggered heights are 0,0.25,0.5,0.75 and 1 times of beam height respectively,under the consideration of 0.05 and 0.25 axial compression ratio.It is gained the rule of carrying capacity and bond-slip of staggered joint change with staggered height.

关 键 词：错开节点 粘结滑移 传力机理 非线性有限元 受剪承载力 

分 类 号：TU375.4[建筑科学—结构工程]