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Numerical modelling of the punching behaviour of steel fibre reinforced self-co...
Barros, Joaquim A. O.; Teixeira, Marcos D. E.; Cunha, Vítor M. C. F.; Moraes-Neto, B. N.; Gouveia, A. VenturaPunching shear failure on flat reinforced concrete slabs of residential and commercial buildings is generally avoided by using transversal reinforcement and/or chapiters. The first option requires intense labour, mainly when densely flexural reinforcement exists in the potential punching failure region, with detrimental consequences in terms of costs of this construction solution. The second option has also ext...
A model to simulate the contribution of fibre reinforcement for the punching re...
Moraes-Neto, B. N.; Barros, Joaquim A. O.; Melo, Guilherme S.In this paper analytical formulations are developed for the prediction of the punching resistance of flat slabs 17 of steel fibre reinforced concrete (SFRC) flexurally reinforced with steel bars. By performing statistical 18 analysis with a database that collects experimental results on the characterization of the post-cracking 19 behaviour of SFRC, equations are determined for the evaluation of the residual fl...
A model for the prediction of the punching resistance of steel fibre reinforced...
Moraes-Neto, B. N.; Barros, Joaquim A. O.; Melo, Guilherme S.With the aim of contributing for the development of design guidelines capable of predicting with high accuracy the punching resistance of steel fibre reinforced concrete (SFRC) flat slabs, a proposal is presented in the present paper and its predictive performance is assessed by using a database that collects the experimental results from 154 punching tests. The theoretical fundaments of this proposal are based...
The predictive performance of design models for the punching resistance of SFRC...
Moraes-Neto, B. N.; Barros, Joaquim A. O.; Melo, Guilherme S.In the recent years steel fibre reinforced concrete (SFRC), in a volume percentage between 0.75 and 1.25, is being proposed to build slabs supported on piles and slabs supported on columns, where the unique conventional reinforcement is composed of some steel bars in the alignments of the columns/piles, designated as anti-progressive collapse bars. Punching resistance, however, can be a concern in this str...
Avaliação do cálculo da resistência ao punçoamento centrado de lajes fungiforme...
Moraes-Neto, B. N.; Barros, Joaquim A. O.; Melo, Guilherme S.; Eira, Hélder C. A.Desde 1979 que as fibras de aço vêm sendo estudadas como uma alternativa de reforço às estruturas de betão armado. No que diz respeito ao sistema estrutural de lajes fungiformes, os avanços conseguidos no campo da ciência dos materiais e das técnicas de construção já permitem a construção de estruturas onde as lajes são reforçadas praticamente apenas por fibras de aço. Para que este novo sistema construtivo...
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