Structural Engineering and Mechanics

  • 제36권3호
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  • Pages.343-361
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  • 2010
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

A discrete particle model for reinforced concrete fracture analysis

  • Azevedo, N. Monteiro (LNEC) ;
  • Lemos, J.V. (LNEC) ;
  • Almeida, J.R. (Department of Civil Engineering, Faculdade de Ciencias e Tecnologia, UNL)
  • 투고 : 2009.08.20
  • 심사 : 2010.06.27
  • 발행 : 2010.10.20
⟨ 이전 논문 다음 논문 ⟩

초록

The Discrete Element Method adopting particles for the domain discretization has recently been adopted in fracture studies of non-homogeneous continuous media such as concrete and rock. A model is proposed in which the reinforcement is modelled by 1D rigid-spring discrete elements. The rigid bars interact with the rigid circular particles that simulate the concrete through contact interfaces. The DEM enhanced model with reinforcement capabilities is evaluated using three point bending and four point bending tests on reinforced concrete beams without stirrups. Under three point bending, the model is shown to reproduce the expected final crack pattern, the crack propagation and the load displacement diagram. Under four point bending, the model is shown to match the experimental ultimate load, the size effect and the crack propagation and localization.

키워드

참고문헌

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  2. Simulating Tensile and Compressive Failure Process of Concrete with a User-defined Bonded-Particle Model vol.12, pp.1, 2018, https://doi.org/10.1186/s40069-018-0292-1
  3. Influence of particle packing on fracture properties of concrete vol.8, pp.6, 2011, https://doi.org/10.12989/cac.2011.8.6.677
  4. Applied element method simulation of experimental failure modes in RC shear walls vol.19, pp.4, 2017, https://doi.org/10.12989/cac.2017.19.4.365
  5. Numerical modeling of the tension stiffening in reinforced concrete members via discontinuum models vol.8, pp.3, 2010, https://doi.org/10.1007/s40571-020-00342-5