Ultimate Bearing Capacity Test of Retard-Bonded Prestressed Concrete T-Beams

Abstract:

Through the ultimate bearing capacity test of 2 prestressed concrete T-beams, the cracking load, the failure load, the control section stress, and the crack and deformation were tested respectively. The mechanical behavior differences of retard-bonded prestressed concrete between T-beam and ordinary prestressed concrete T-beam were contrasted. The test results show that: the change rule of the measured value of deflection and strain is basically the same between the retard-bonded prestressed concrete T-beam and the ordinary prestressed concrete T-beam. Compared with the measured value of the ordinary prestressed concrete T-beam, the cracking load of retard-bonded prestressed concrete T-beams is 10% greater, the failure load of retard-bonded prestressed concrete T-beam is 3% greater. when loading is 80kN, the midspan deflection of retard-bonded prestressed concrete T-beam is 1% greater, when loading is 229kN, the midspan deflection of retard-bonded prestressed concrete T-beam is 2% greater, when loading is 225kN, the crack width of retard-bonded prestressed concrete T-beam is 2% smaller. The average crack spacing of retard-bonded prestressed concrete T-beam is 6% smaller. The retard-bonded prestressed concrete T-beam have better mechanical behavior.

• Periodical: Applied Mechanics and Materials (Volumes 256-259)
• Pages: 769-774
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.256-259.769
• Online since: December 2012
• Authors: Guo Hui Cao, Jia Xing Hu, Ming Xiao, Kai Zhang
• Keywords: Prestressed Concrete T-Beam, Retard-Bonded, Test, Ultimate Bearing Capacity

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