吴业飞, 陈伟球. 基于内聚力模型的FRP-混凝土粘结强度分析[J]. 工程力学, 2010, 27(7): 113-119.
引用本文: 吴业飞, 陈伟球. 基于内聚力模型的FRP-混凝土粘结强度分析[J]. 工程力学, 2010, 27(7): 113-119.
WU Ye-fei, CHEN Wei-qiu. COHESIVE ZONE MODEL BASED ANALYSIS OF BOND STRENGTH BETWEEN FRP AND CONCRETE[J]. Engineering Mechanics, 2010, 27(7): 113-119.
Citation: WU Ye-fei, CHEN Wei-qiu. COHESIVE ZONE MODEL BASED ANALYSIS OF BOND STRENGTH BETWEEN FRP AND CONCRETE[J]. Engineering Mechanics, 2010, 27(7): 113-119.

基于内聚力模型的FRP-混凝土粘结强度分析

COHESIVE ZONE MODEL BASED ANALYSIS OF BOND STRENGTH BETWEEN FRP AND CONCRETE

  • 摘要: 纤维增强材料(简称FRP)已被广泛应用于钢筋混凝土结构的修复和补强。FRP与混凝土的粘结强度是一个重要的设计参数,一般通过单剪试验测得。该文基于内聚力模型(Cohesive Zone Model)进行了单剪试验的有限元模拟,采用三线性应力-张开位移模型定义内聚单元本构关系,并对一些典型试验的荷载位移曲线进行参数拟合以确定相关参数,其值与文献吻合。进行了参数分析,得到了内聚参数对计算结果的影响规律,并给出了合理选取内聚参数的建议。

     

    Abstract: Fiber reinforced polymer (FRP) has been widely used to strengthen deficient reinforced concrete structures. The bond strength between FRP and concrete is an important design parameter, which can be measured by a single shear test. This paper presents an FEM simulation of the single shear test based on the cohesive zone model (CZM), a tri-linear stress-deformation model. Some typical experimental results are employed to obtain relevant parameters in the CZM, which agree those in published literatures. The detailed parametric study is then performed to show the influence of parameters of the CZM on the results, and a suggestion for appropriately choosing these parameters is given.

     

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