Experimental study on the plastic rotation capacity of reinforced high strength concrete beams

10.1617/13602 ◽  
2005 ◽  
Vol 34 (239) ◽  
pp. 302-311
Author(s):  
M.-Y. Ko
Keyword(s):  
Experimental Study ◽  
High Strength Concrete ◽  
Concrete Beams ◽  
High Strength ◽  
Strength Concrete ◽  
Plastic Rotation ◽  
Rotation Capacity ◽  
Plastic Rotation Capacity

Ductility and linear analysis with moment redistribution in reinforced high-strength concrete beams

2005 ◽  
Vol 32 (1) ◽  
pp. 194-203 ◽  
Author(s):  
Ricardo N.F do Carmo ◽  
Sérgio M.R Lopes
Keyword(s):  
High Strength Concrete ◽  
Concrete Beams ◽  
High Strength ◽  
Linear Analysis ◽  
Strength Concrete ◽  
Plastic Rotation ◽  
Moment Redistribution ◽  
Rotation Capacity ◽  
The Moment ◽  
Plastic Rotation Capacity

The evaluation of the ductility of reinforced concrete beams is very important, since it is essential to avoid a fragile collapse of the structure by ensuring adequate deformation at the ultimate limit state. One of the procedures used to quantify ductility is based on deformations, namely, the plastic rotation capacity. Knowledge of the plastic rotation capacity of certain regions of the structure is important for a plastic analysis or a linear analysis with moment redistribution. An experimental program is described in this article. It is composed of 10 tests designed to study the moment redistribution and ductility of continuous high-strength concrete beams. Particular care was given to analysing how the tensile reinforcement ratio and the transverse reinforcement ratio influence the plastic rotation capacity of the beams. A comparative study was carried out on several codes related to the moment redistribution permitted and the experimental findings. It was found that some of the recommendations are unsafe. It was also found that high-strength concrete beams, when properly designed, have enough deformation capacity to be used in plastic analysis.Key words: structural concrete, plastic rotation, moment redistribution, high-strength concrete.

scholarly journals Experimental Study on the Torsional Behaviour of Prestressed HSC Hollow Beams

2020 ◽  
Vol 10 (2) ◽  
pp. 642 ◽  
Author(s):  
Luís Bernardo ◽  
Sérgio Lopes ◽  
Mafalda Teixeira
Keyword(s):  
Experimental Study ◽  
High Strength Concrete ◽  
Concrete Beams ◽  
Concrete Strength ◽  
High Strength ◽  
Experimental Program ◽  
Pure Torsion ◽  
Strength Concrete ◽  
Hollow Beams

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.

Experimental Study on the Effect of Spliced Reinforcement in High Strength Concrete Beams

2005 ◽  
Vol 8 (1) ◽  
pp. 45-53 ◽  
Author(s):  
Mohamed Y. Hegab ◽  
S. Yazdani ◽  
Hatem H. Ghaith ◽  
Hany M. El-Hashemy
Keyword(s):  
Experimental Study ◽  
High Strength Concrete ◽  
Concrete Beams ◽  
High Strength ◽  
Strength Concrete

Experimental Study on the Max Crack Width of Steel Fiber Reinforced High-Strength Concrete Beams

2016 ◽  
Vol 851 ◽  
pp. 798-802
Author(s):  
Qiao Yan Guan ◽  
Juan Wang ◽  
Ming En Zhang
Keyword(s):  
Experimental Study ◽  
High Strength Concrete ◽  
Crack Width ◽  
Steel Fiber ◽  
Concrete Beams ◽  
Volume Fraction ◽  
High Strength ◽  
Fiber Reinforced ◽  
Strength Concrete ◽  
Maximum Crack

The effect of volume fraction of steel fiber and the strength of reinforcement on the maximum crack width of steel fiber reinforced high-strength concrete beams was analyzed based on experimental results. In addition, the formula to calculate the maximum crack width of steel fiber-reinforced high-strength concrete beams was established.

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