| 1. |
- Huang, Zheng, et al.
(författare)
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A practical method for predicting shear deformation of reinforced concrete beams
- 2020
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Ingår i: Engineering structures. - : Elsevier. - 0141-0296 .- 1873-7323. ; 206
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents a practical method for predicting the deflections, including both the flexure and shear contributions, of reinforced concrete (RC) beams. The shear force - shear strain (V-γ) curve of a section in the shear span of RC beams is represented by a piecewise model and the tangent shear stiffness after shear cracking, Kt,cr, is assumed to be constant. A 2D finite element model, which has been validated for predicting shear deformation of RC beams, was used to identify factors that may affect the shear reduction factor (the ratio of Kt,cr to the elastic shear stiffness) and establish methodology for predicting the V-γ curve. Two types of methods, integration-form and closed-form, for predicting the total deflection were developed, in which the flexure-induced deflection (FD) was predicted using the Bischoff model while the shear-induced deflection (SD) was predicted using the method proposed in this paper. Comparison of the predictions with experimental results confirms that the Bischoff model provides reliable predictions of FDs of RC beams with and without shrinkage. It also shows that the proposed method can provide accurate predictions for SD after shear cracking, provided the effect of shrinkage on the shear cracking load is adequately quantified.Support from: National Natural Science Foundation of China (No. 51378104) and A Project Funded by the Priority Academic Program Development ofJiangsu Higher Education Institutions. The Development Fund of the Swedish Construction Industry (SBUF), the Swedish Research Council Formas and Elsa and Sven Thysell Foundation
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| 2. |
- Elfgren, Lennart, 1942-, et al.
(författare)
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Assessment of Fasteners to Concrete : A Tribute to Rolf Eligehausen
- 2017
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Ingår i: Connections between Steel and Concrete. - Stuttgart. - 9783945773062 ; , s. 1294-1302
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Konferensbidrag (refereegranskat)abstract
- Some examples are given of assessment of fastenings to concrete structures and the work started by Rolf Eligehausen in fib Task Group 2.9 “Fastenings to structural concrete and masonry”. Studies have been made on e.g. the influence of creep on adhesive anchors and of surface reinforcement and size effects on headed anchors.
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| 3. |
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| 4. |
- Noghabai, Keivan, et al.
(författare)
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Bond properties of high-strength concrete
- 1993
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Ingår i: Utilization of High Strength Concrete : Proceedings. - Oslo : Norsk Betongforening. - 8291341001 ; , s. 1169-1176, s. 263-265
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Konferensbidrag (refereegranskat)
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| 5. |
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| 6. |
- Ohlsson, Ulf, et al.
(författare)
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Influence of hydraulic pressure in fracture mechanics modelling of crack propagation in concrete
- 1998
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Ingår i: Materials and Structures. - 1359-5997 .- 1871-6873. ; 31:3, s. 203-208
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents a nonlinear fracture mechanics analysis of a part of an offshore concrete structure. The analysis focuses on the risk of cracking between the prestressing ducts in the shaft of the submerged platform. The influences of water and grout pressure in prestressing ducts have been taken into consideration. The analysis has been performed using both discrete and smeared crack analysis.
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| 7. |
- Ohlsson, Ulf, et al.
(författare)
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Mixed-mode fracture and anchor bolts in concrete analysis with inner softening bands
- 1997
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Ingår i: Journal of engineering mechanics. - 0733-9399 .- 1943-7889. ; 123:10, s. 1027-1033
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Tidskriftsartikel (refereegranskat)abstract
- The paper presents a nonlinear fracture mechanics analysis of mixed-mode fracture and anchor pullout in concrete. The analysis is based on elements with inner softening bands (ISB). A major advantage of the ISB approach is that discrete cracks can be introduced anywhere and in any direction within the finite-element mesh. Calculated loads, deformations, and crack patterns are compared to experimental results. A good correspondence is achieved.
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| 8. |
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| 9. |
- Olofsson, Thomas, et al.
(författare)
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Anchorage and bond properties in concrete
- 1995
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Ingår i: Fracture of brittle, disordered materials. - London : Taylor and Francis Group. - 0419190503 ; , s. 525-543
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Konferensbidrag (refereegranskat)
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| 10. |
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