任晓丹, 范伟达. 基于损伤模型的钢筋混凝土梁剪切破坏全过程分析[J]. 工程力学, 2017, 34(增刊): 139-142,148. DOI: 10.6052/j.issn.1000-4750.2016.03.S024
引用本文: 任晓丹, 范伟达. 基于损伤模型的钢筋混凝土梁剪切破坏全过程分析[J]. 工程力学, 2017, 34(增刊): 139-142,148. DOI: 10.6052/j.issn.1000-4750.2016.03.S024
REN Xiao-dan, FAN Wei-da. DAMAGE MODEL BASED NUMERICAL STUDY FOR SHEAR FAILURES OF REINFORCED CONCRETE BEAMS[J]. Engineering Mechanics, 2017, 34(增刊): 139-142,148. DOI: 10.6052/j.issn.1000-4750.2016.03.S024
Citation: REN Xiao-dan, FAN Wei-da. DAMAGE MODEL BASED NUMERICAL STUDY FOR SHEAR FAILURES OF REINFORCED CONCRETE BEAMS[J]. Engineering Mechanics, 2017, 34(增刊): 139-142,148. DOI: 10.6052/j.issn.1000-4750.2016.03.S024

基于损伤模型的钢筋混凝土梁剪切破坏全过程分析

DAMAGE MODEL BASED NUMERICAL STUDY FOR SHEAR FAILURES OF REINFORCED CONCRETE BEAMS

  • 摘要: 剪切破坏是钢筋混凝土梁的典型破坏形态,但迄今为止并未建立起较为准确的分析方法。该文尝试基于混凝土弹塑性损伤本构关系和非线性有限元分析方法,对钢筋混凝土梁的剪切破坏全过程开展较为精细的数值模拟研究,并对某剪切破坏梁试验与其数值模型的裂缝发展过程及力-位移曲线进行了对比分析。结果表明,该文采用的方法能够较好地模拟钢筋混凝土梁在剪切破坏全过程中的整体非线性响应,并能够追踪梁中裂缝产生和发展的全过程。该文模型将为钢筋混凝土构件剪切破坏研究提供一条可行的途径。

     

    Abstract: As an important failure pattern, the shear failure of reinforced concrete members still cannot be well captured by the current theory and methods. In the present work, the shear failure of a reinforced concrete beam is numerically investigated based on a damage constitutive model for concrete and on the explicit nonlinear finite element method. Besides, the aspects of the numerical result and the test result of a beam in shear are compared and discussed, including crack developing and load-deformation response. The results indicate that the proposed method could reproduce the salient feature of shear failure, and the crack patterns could be well tracked. The proposed method offers an alternate way to investigate the shear failure for reinforced concrete members.

     

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