Shear Behavior of Large Prestressed Concrete Beams Cast with High Strength Concrete and the Effect of Draped Tendon on their Shear Behavior

2005 ◽  
Vol 17 (6) ◽  
pp. 963-974
Author(s):  
Kang-Su Kim
Keyword(s):  
Prestressed Concrete ◽  
High Strength Concrete ◽  
Concrete Beams ◽  
High Strength ◽  
Shear Behavior ◽  
Strength Concrete

scholarly journals SHEAR BEHAVIOR OF SUSTAINABLE REINFORCED HIGH- STRENGTH CONCRETE BEAMS WITHOUT STIRRUPS

2020 ◽  
Vol 24 (Special) ◽  
pp. 315-328
Author(s):  
Ahmed Jawad Hassan ◽  
◽  
Nagham Tariq Al-Shafi’i ◽  
Keyword(s):  
High Strength Concrete ◽  
Concrete Beams ◽  
High Strength ◽  
Shear Behavior ◽  
Strength Concrete

Prestressed high-strength concrete beams under torsion and bending

1999 ◽  
Vol 26 (2) ◽  
pp. 197-207
Author(s):  
Samir A Ashour ◽  
Sabry A Shihata ◽  
Ali A Akhtaruzaman ◽  
Faisal F Wafa
Keyword(s):  
Prestressed Concrete ◽  
High Strength Concrete ◽  
Concrete Beams ◽  
Bending Moment ◽  
High Strength ◽  
Torsional Stiffness ◽  
Test Results ◽  
Torsional Strength ◽  
Interaction Diagram ◽  
Strength Concrete

Test results of 16 rectangular prestressed high-strength concrete beams subjected to the combined action of torsion and bending are presented. The major variables were the ratio of torsion to the bending moment (T/M) and the prestressing level. The beams were subjected to two levels of prestressing, corresponding to 0.05fc' and 0.10fc', where fc' is the compressive strength of concrete (about 90 MPa). Test results showed that the torque-twist relations for the test beams were approximately linear up to cracking and thereafter became nonlinear. Increasing the T/M ratio and the prestressing level increases both torsional stiffness and strength. Several theoretical methods available in the literature developed for normal-strength concrete were used to predict the torsional strength of the tested high-strength concrete beams. Interaction equations were used along with some other methods to predict the torsional capacity in the presence of a bending moment. Good agreement was observed between the experimental and theoretical results.Key words: beams (supports), bending, cracking, failure, high-strength concrete, interaction diagram, prestressed concrete, stiffness, torsion, torsional strength.

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