Ultimate shear response of ultra-high-performance steel fibre-reinforced concrete elements

• Autorzy: Tibea C. , Bompa Dan V.

Identyfikatory

DOI

10.1007/s43452-020-00051-z

• Języki publikacji: EN

Abstrakty

EN

This paper examines the experimental performance of ultra-high-performance steel fibre-reinforced concrete (UHPSFRC) beams subjected to loads at relatively low shear span-to-depth ratios. The results and observations from six tests provide a detailed insight into the ultimate response including shear strength and failure mode of structural elements incorporating various fibre contents. The test results showed that a higher fibre content results in an increase in ultimate capacity and some enhancement in terms of ductility. Detailed nonlinear numerical validations and sensitivity studies were also undertaken in order to obtain further insights into the response of UHPSFRC beams, with particular focus on the influence of the shear span-to-depth ratio, fibre content and flexural reinforcement ratio. The parametric investigations showed that a reduction in shear span-to-depth ratio results in an increase in the member capacity, whilst a reduction in the flexural reinforcement ratio produces a lower ultimate capacity and a relatively more flexible response. The test results combined with those from numerical simulations enabled the development of a series of design expressions to estimate the shear strength of such members. Validations were performed against the results in this paper, as well as against a collated database from previous experimental studies.

Słowa kluczowe

EN

ultra-high-performance steel fibre-reinforced concrete; shear strength; nonlinear simulations; concrete damage plasticity; parametric investigations

PL

beton zbrojony; wytrzymałość na ścinanie; badania parametryczne

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2020
• Tom: Vol. 20, no. 2
• Strony: 280--295
• Opis fizyczny: Bibliogr. 64 poz., rys., wykr.

Twórcy

autor

Tibea C.

• StruSoft AB, Malmö, Sweden

autor

Bompa Dan V.

• Department of Civil and Environmental Engineering, University of Surrey, Guildford GU2 7XH, UK

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021)