Numerical limit analysis of keyed shear joints in concrete structures
| Autor: | Morten Andersen Herfelt, Peter Noe Poulsen, Jesper F. Jensen, Linh Cao Hoang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Shear walls
Plasticity 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Upper and lower bounds Keyed joints 0201 civil engineering Finite element 021105 building & construction Limit analysis Shear wall General Materials Science Civil and Structural Engineering Mathematics business.industry Finite element limit analysis Precast concrete elements Building and Construction Structural engineering Finite element method Stress field Shear (geology) Mechanics of Materials Numerical modelling business Failure mode and effects analysis |
| Zdroj: | Herfelt, M A, Poulsen, P N, Hoang, L C & Jensen, J F 2016, ' Numerical limit analysis of keyed shear joints in concrete structures ', Structural Concrete, vol. 17, no. 3, pp. 481-490 . https://doi.org/10.1002/suco.201500161 |
| DOI: | 10.1002/suco.201500161 |
| Popis: | This paper concerns the shear capacity of keyed joints, which are transversely reinforced with overlapping U-bar loops. It is known from experimental studies that the discontinuity of the transverse reinforcement affects the capacity as well as the failure mode; however, to the best knowledge of the authors, previous theoretical works and present design equations in standards do not account for this important effect. In this paper, a detailed model based on finite element limit analysis is introduced to assess the effect of the discontinuous reinforcement. The model is based on the lower bound theorem and uses the modified Mohr-Coulomb yield criterion, which is formulated for second-order cone programming. The model provides a statically admissible stress field as well as the failure mode. Twenty-four different test specimens are modelled and the calculations are compared to the experimental results. The results of the model show satisfactory agreement with the experimental observations. The model produces significantly better estimates of the shear capacity than the design equations of Eurocode 2. |
| Databáze: | OpenAIRE |
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