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Numerical simulation on dynamic bending strength of three-graded concrete beam based on meso-mechanics

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Abstract

To study the bending strength of mass concrete under dynamic loading, the pure bending zone of three-graded concrete beam is considered as a three-phase composite composed of matrix, aggregate and interface between them on meso-level. Dynamic constitutive model considering strain-rate strengthening effect and damage softening effect is adopted to describe the cocrete and meso-element’s damage. The failure mechanisms of beam under impact loading, triagle wave load, dynamic load coupling with initial static loading were simulated by using displacement-controlled FEM. Furthermore, stress-strain curve of the specimens and their dynamic bending strength were obtained. The results obtained from numerical simulation agreed well with experimental data.

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Authors and Affiliations

  1. Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing, 100022, China

    Ruijun Tian  (田瑞俊), Xiuli Du  (杜修力) & Yijiang Peng  (彭一江)

Authors
  1. Ruijun Tian  (田瑞俊)
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  2. Xiuli Du  (杜修力)
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  3. Yijiang Peng  (彭一江)
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Corresponding author

Correspondence to Xiuli Du  (杜修力).

Additional information

Supported by the National Natural Science Foundation(No.90510011) and National Science Fund for Distinguished Young Scholars (No.50325826).

TIAN Ruijun, born in 1983, male, M.

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Tian, R., Du, X. & Peng, Y. Numerical simulation on dynamic bending strength of three-graded concrete beam based on meso-mechanics. Trans. Tianjin Univ. 14, 371–375 (2008). https://doi.org/10.1007/s12209-008-0063-1

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  • DOI: https://doi.org/10.1007/s12209-008-0063-1

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