Experimental Study on the Torsional Behaviour of Prestressed HSC Hollow Beams

被引：10

作者：

Bernardo, Luis ^{[1
]}

Lopes, Sergio ^{[2
]}

Teixeira, Mafalda ^{[1
]}

机构：

[1] Univ Beira Interior, Ctr Mat & Bldg Technol C MADE, Dept Civil Engn & Architecture, P-6201001 Covilha, Portugal

[2] Univ Coimbra, Ctr Mech Engn Mat & Proc CEMMPRE, Dept Civil Engn, P-3030788 Coimbra, Portugal

来源：

APPLIED SCIENCES-BASEL | 2020年 / 10卷 / 02期

关键词：

concrete structures; beams & girders; torsion; high-strength concrete; prestressing; CONCRETE BEAMS; STRENGTH;

D O I：

10.3390/app10020642

中图分类号：

O6 [化学];

学科分类号：

0703 ;

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.

引用

页数：14

共 17 条

[1]

[Anonymous], 2010, 199211 NP EN CEN

[2] Theoretical behavior of HSC sections under torsion [J].