Stiffness Degradation Characteristics Destructive Testing and Finite-Element Analysis of Prestressed Concrete T-Beam
作者: Chengquan Wang, Yonggang Shen, Yun Zou, Tianqi Li and Xiaoping Feng
刊名: CMES: Computer Modeling in Engineering & Sciences, 2018, Vol.114 (1), pp.75-93
来源数据库: Tech Science Press
DOI: 10.3970/cmes.2018.114.075
关键词: Prestressed concrete T-beamDestructive testingFinite-elementStiffnessPlane-section assumption.
原始语种摘要: The failure behavior of the precast prestressed concrete T girder was investigated by destructive test and finite-element analysis, and the mid-span deflection, girder stiffness and the variation of the cross section strain in the loading process were obtained, and the mechanical properties, mechanical behavior, elastic and plastic behavior and ultimate bearing capacity of T girder with large span were revealed. Furthermore, the relationship between the beam stiffness degradation, the neutral axis in cross-section, steel yielding and concrete cracking are investigated and analyzed. A method was proposed to predict the residual bearing capacity of a bridge based on the variation of the position of the cross section strain distribution and the section neutral axis, which provided a...
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  • concrete 具体
  • Concrete 混凝土
  • Testing 检测
  • section 薄片
  • stiffness 刚性
  • prestressed 预受力的
  • capacity 电容量
  • variation 变异
  • ultimate 极限
  • precast 预浇铸