Experimental Study on the Torsional Behaviour of Prestressed HSC Hollow Beams

Applied Sciences

Mafalda Teixeira¹  Luís Bernardo¹  Sérgio Lopes² 

[1] Department of Civil Engineering and Architecture, Centre of Materials and Building Technologies (C-MADE), University of Beira Interior, 6201-001 Covilhã, Portugal;Department of Civil Engineering, Center for Mechanical Engineering, Materials and Processes (CEMMPRE), University of Coimbra, 3030-788 Coimbra, Portugal;

关键词: concrete structures;    beams &;    girders;    torsion;    high-strength concrete;    prestressing;   

DOI  :  10.3390/app10020642

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown