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Influence of design parameters on tensile membrane action in reinforced concrete slabs

Wouter Botte (UGent) , Dirk Gouverneur (UGent) , Robby Caspeele (UGent) and Luc Taerwe (UGent)
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Abstract
Reinforced concrete slabs are traditionally designed to carry a specified design load for adequate capacity at ultimate limit state (ULS). In case of an accidental event, however, tensile membrane action can be activated to establish an alternative load path, which will delay or prevent the collapse of the structure. As such, this tensile action increases the bearing capacity, safety and, hence, the robustness of structures. However, research on this important strength reserve is scarce and the residual capacity is commonly not taken into account during the design. In previous contributions of the authors, a unique test set-up was developed and described to investigate the tensile behaviour of slabs under large deformations because of the accidental removal of a support. A set of three real-scale reinforced concrete slabs of a total length of 14 m was tested. The experiments provided a unique set of data that was subsequently used to develop and validate a numerical model. In this study, this numerical model was used to perform a parameter study to identify the influence of the most important design parameters: span length, slab thickness and reinforcement (ultimate strain and geometric ratio); the results of the analysis are presented in this article. Further, the boundary conditions were shown to have an important influence on the development of tensile membrane action and this effect was investigated considering different restraint conditions as well as using the finite element model analysis of a frame.
Keywords
parametric study, CATENARY ACTION, BEHAVIOR, frame structures, finite element model analysis, robustness, Tensile membrane action, reinforced concrete

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MLA
Botte, Wouter, et al. “Influence of Design Parameters on Tensile Membrane Action in Reinforced Concrete Slabs.” STRUCTURAL ENGINEERING INTERNATIONAL, vol. 25, no. 1, 2015, pp. 50–60, doi:10.2749/101686614X14043795570174.
APA
Botte, W., Gouverneur, D., Caspeele, R., & Taerwe, L. (2015). Influence of design parameters on tensile membrane action in reinforced concrete slabs. STRUCTURAL ENGINEERING INTERNATIONAL, 25(1), 50–60. https://doi.org/10.2749/101686614X14043795570174
Chicago author-date
Botte, Wouter, Dirk Gouverneur, Robby Caspeele, and Luc Taerwe. 2015. “Influence of Design Parameters on Tensile Membrane Action in Reinforced Concrete Slabs.” STRUCTURAL ENGINEERING INTERNATIONAL 25 (1): 50–60. https://doi.org/10.2749/101686614X14043795570174.
Chicago author-date (all authors)
Botte, Wouter, Dirk Gouverneur, Robby Caspeele, and Luc Taerwe. 2015. “Influence of Design Parameters on Tensile Membrane Action in Reinforced Concrete Slabs.” STRUCTURAL ENGINEERING INTERNATIONAL 25 (1): 50–60. doi:10.2749/101686614X14043795570174.
Vancouver
1.
Botte W, Gouverneur D, Caspeele R, Taerwe L. Influence of design parameters on tensile membrane action in reinforced concrete slabs. STRUCTURAL ENGINEERING INTERNATIONAL. 2015;25(1):50–60.
IEEE
[1]
W. Botte, D. Gouverneur, R. Caspeele, and L. Taerwe, “Influence of design parameters on tensile membrane action in reinforced concrete slabs,” STRUCTURAL ENGINEERING INTERNATIONAL, vol. 25, no. 1, pp. 50–60, 2015.
@article{5946128,
  abstract     = {{Reinforced concrete slabs are traditionally designed to carry a specified design load for adequate capacity at ultimate limit state (ULS). In case of an accidental event, however, tensile membrane action can be activated to establish an alternative load path, which will delay or prevent the collapse of the structure. As such, this tensile action increases the bearing capacity, safety and, hence, the robustness of structures. However, research on this important strength reserve is scarce and the residual capacity is commonly not taken into account during the design. In previous contributions of the authors, a unique test set-up was developed and described to investigate the tensile behaviour of slabs under large deformations because of the accidental removal of a support. A set of three real-scale reinforced concrete slabs of a total length of 14 m was tested. The experiments provided a unique set of data that was subsequently used to develop and validate a numerical model. In this study, this numerical model was used to perform a parameter study to identify the influence of the most important design parameters: span length, slab thickness and reinforcement (ultimate strain and geometric ratio); the results of the analysis are presented in this article. Further, the boundary conditions were shown to have an important influence on the development of tensile membrane action and this effect was investigated considering different restraint conditions as well as using the finite element model analysis of a frame.}},
  author       = {{Botte, Wouter and Gouverneur, Dirk and Caspeele, Robby and Taerwe, Luc}},
  issn         = {{1016-8664}},
  journal      = {{STRUCTURAL ENGINEERING INTERNATIONAL}},
  keywords     = {{parametric study,CATENARY ACTION,BEHAVIOR,frame structures,finite element model analysis,robustness,Tensile membrane action,reinforced concrete}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{50--60}},
  title        = {{Influence of design parameters on tensile membrane action in reinforced concrete slabs}},
  url          = {{http://doi.org/10.2749/101686614X14043795570174}},
  volume       = {{25}},
  year         = {{2015}},
}

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