钢-混凝土连续组合梁界面滑移效应研究

STUDY ON INTERFACE SLIP EFFECT OF STEEL- CONCRETE COMPOSITE CONTINUOUS BEAMS

滑移效应是组合梁的研究和应用中必须重视的问题。考虑组合梁各部分的材料特性和交界面的滑移效应,运用ANSYS 12.0模拟建立了适合于钢-混凝土组合梁非线性分析的有限元模型。分析了钢-混凝土连续组合梁荷载-滑移曲线的变化规律及组合梁的变形情况,并且在此基础上研究了剪力连接度对界面滑移及挠度的影响。计算结果表明,剪力连接度对界面滑移及挠度均有一定影响,当剪力连接度大于0.5时,剪力连接度对界面滑移及挠度的影响可以忽略。

It' s necessary to pay attention to slip effect in the research and application of composite beam. Finite element model for nonlinear analysis of steel-concrete composite beams is established using ANSYS 12. 0, considering the material properties of each part and interfacial slip of composite beam. Deformation and variation of load slip curve of steel-concrete composite continuous beams are analysed, and the effect of Shear connection degree to interfacial slip and deflection are researched on the basis of which. It is shown that the degree of shear connection influences interfacial slip and deflection to a certain degree, degree of shear connection on the inter-face slip and deflection can be ignored when the degree of shear connection is greater than 0. 5.