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新颁布的GB 50010—2010《混凝土结构设计规范》中提出了一种钢筋混凝土黏结滑移本构关系,为了充分探讨其适用性,利用DIANA软件分别建立了考虑和不考虑黏结滑移关系的两类数值模型,并就梁的开裂荷载、荷载-挠度曲线、裂缝分布形态等方面对仿真与试验结果进行了比对分析。结果表明:在各方面采用新规范黏结滑移本构关系的分析结果均优于不考虑黏结滑移关系时的情形,该本构关系能够较好地反映钢筋混凝土之间的协同工作性能,有利于提高钢筋混凝土结构数值分析的精度。
In the newly promulgated GB 50010-2010 “Code for Design of Concrete Structures”, a constitutive relation of bond and slip between reinforced concrete is proposed. In order to fully explore its applicability, two sets of two Numerical model was established and the simulation and test results were compared and analyzed in terms of beam cracking load, load-deflection curve and fracture distribution morphology. The results show that the results of the analysis using the new code of sliding slippage constitutive relation in all aspects are better than those without considering the slip-slip relationship. The constitutive relation can well reflect the interoperability of reinforced concrete with Help to improve the accuracy of numerical analysis of reinforced concrete structures.