Assessment of SFRC flat slab punching behaviour - Part II: Reversed horizontal cyclic loading

Research output: Contribution to journalArticle

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Abstract

This paper presents an experimental study of four flat slab specimens subjected to combined vertical and horizontal cyclic loading. Steel fibre-reinforced concrete (SFRC) was used only in the local region of the slab-column connection, while the rest of the slabs were cast using normal concrete. The specimens measured 4·15 m×1·85 m×0·15 m and were connected to two steel half columns by 0·25 m×0·25 m rigid steel plates, prestressed against the slab using steel bolts, to ensure monolithic behaviour. The specimens were tested using an innovative test setup system that accounted for important factors, such as the ability of bending moment redistribution, line of inflection mobility and assured equal vertical displacements at the opposite slab borders, and symmetrical shear forces. Results show that the presence of SFRC in the slab-column connection region is effective in increasing the deformation capacity of slab-column connections, allowing the increase of horizontal drift ratios.

Original languageEnglish
Pages (from-to)26-42
Number of pages17
JournalMagazine of Concrete Research
Volume71
Issue number1
DOIs
Publication statusPublished - 1 Jan 2019

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Punching
Steel fibers
Steel
Reinforced concrete
Bending moments
Bolts
Concretes

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title = "Assessment of SFRC flat slab punching behaviour - Part II: Reversed horizontal cyclic loading",
abstract = "This paper presents an experimental study of four flat slab specimens subjected to combined vertical and horizontal cyclic loading. Steel fibre-reinforced concrete (SFRC) was used only in the local region of the slab-column connection, while the rest of the slabs were cast using normal concrete. The specimens measured 4·15 m×1·85 m×0·15 m and were connected to two steel half columns by 0·25 m×0·25 m rigid steel plates, prestressed against the slab using steel bolts, to ensure monolithic behaviour. The specimens were tested using an innovative test setup system that accounted for important factors, such as the ability of bending moment redistribution, line of inflection mobility and assured equal vertical displacements at the opposite slab borders, and symmetrical shear forces. Results show that the presence of SFRC in the slab-column connection region is effective in increasing the deformation capacity of slab-column connections, allowing the increase of horizontal drift ratios.",
author = "Gouveia, {Nuno D.} and Faria, {Duarte M. V.} and Ramos, {Ant{\'o}nio Pinho}",
note = "This work received support from the Fundacao para a Ciencia e a Tecnologia - Ministerio da Ciencia, Tecnologia e Ensino Superior (scholarship number SFRH/BD/109073/2015). The authors would like to thank Eng. Erik Ulrix from BIU, Portugal, Eng. Ana Maria Proenca from FEUP, Portugal, and Eng. Sarah Van Bergen from Bekaert, Belgium, for their support.",
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Assessment of SFRC flat slab punching behaviour - Part II: Reversed horizontal cyclic loading. / Gouveia, Nuno D.; Faria, Duarte M. V.; Ramos, António Pinho.

In: Magazine of Concrete Research, Vol. 71, No. 1, 01.01.2019, p. 26-42.

Research output: Contribution to journalArticle

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