Safety Evaluation of Concrete Structures Based on a Novel Energy Criterion
作者: Qiang Tong, Qingwen Ren, Lei Shen, Linfei Zhang and Yin Yang
刊名: CMES: Computer Modeling in Engineering & Sciences, 2018, Vol.114 (1), pp.33-58
来源数据库: Tech Science Press
DOI: 10.3970/cmes.2018.114.033
关键词: Peak stress pointPost-peak softening stageElastic strain energy density criterionProposed curveStrength reduction method.
原始语种摘要: In this article, the post-peak softening stage of the constitutive relation and the elastic stiffness degradation of concrete are investigated, and a highly reasonable constitutive relation curve is proposed. At the material level, the energy change in the concrete failure process is studied based on the different stress-strain curves of concrete under uniaxial tension and compression. The concrete failure criterion based on elastic strain energy density is deemed suitable and consistent with the experimental phenomena. The hysteresis phenomenon (lags behind the peak strength) is also discussed. At the structure level, the strength reduction method is employed for the stability analysis, the energy change in the failure process of the Long Xi-Kou Dam is examined, and the results show that...
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  • criterion 准则
  • compression 压缩
  • Concrete 混凝土
  • concrete 具体
  • softening 软化
  • employed 就业
  • energy 能量
  • phenomena 现象
  • curve 弯曲
  • change 变化