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Open AccessArticle

Experimental Study on the Torsional Behaviour of Prestressed HSC Hollow Beams

1
Department of Civil Engineering and Architecture, Centre of Materials and Building Technologies (C-MADE), University of Beira Interior, 6201-001 Covilhã, Portugal
2
Department of Civil Engineering, Center for Mechanical Engineering, Materials and Processes (CEMMPRE), University of Coimbra, 3030-788 Coimbra, Portugal
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(2), 642; https://doi.org/10.3390/app10020642
Received: 23 December 2019 / Revised: 8 January 2020 / Accepted: 13 January 2020 / Published: 16 January 2020
(This article belongs to the Special Issue Architectural Structure)
This article describes an experimental program developed to study the influence of longitudinal prestress on the behaviour of high-strength concrete hollow beams under pure torsion. The pre-cracking, the post-cracking and the ultimate behaviour are analysed. Three tests were carried out on large hollow high-strength concrete beams with similar concrete strength. The variable studied was the level of longitudinal uniform prestress. Some important conclusions on different aspects of the beams’ behaviour are presented. These conclusions, considered important for the design of box bridges, include the influence of the level of prestress in the cracking and ultimate behaviour. View Full-Text
Keywords: concrete structures; beams & girders; torsion; high-strength concrete; prestressing concrete structures; beams & girders; torsion; high-strength concrete; prestressing
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MDPI and ACS Style

Bernardo, L.; Lopes, S.; Teixeira, M. Experimental Study on the Torsional Behaviour of Prestressed HSC Hollow Beams. Appl. Sci. 2020, 10, 642.

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