Experimental Study on Mechanical Performance of Unbonded and Bonded Prestressed Concrete Beams

Abstract:

The experiment which based on the stress performance of unbonded and bonded prestressed concrete beam, has made a systematically research on the stress and strain variation law of pretressing tendon in the aforementioned reinforcement prestressed concrete structure. When the bonded prestressed concrete beam bearing load, there is a larger variation in stress and strain of prestressing reinforcement along the length. The maxima of stress and strain of prestressing reinforcement in bonded prestressed concrete beam appears in midspan, it is achieved the yield stress and yield strain, the minima appears in bearing, the stress and strain of prestressing reinforcement in bonded prestressed concrete beam is proportional to the distortion. The stress and strain of prestressed reinforcement in unbonded prestressed concrete beam is almost the same along the length.

• Periodical: Applied Mechanics and Materials (Volumes 178-181)
• Pages: 2387-2392
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.178-181.2387
• Online since: May 2012
• Authors: Jian Su, Nan Gai Yi, Zong Guang Sun, Yang Bai, Ai Guo Zhang
• Keywords: Bonded, Experimental Study, Prestressed Concrete Beam, Stress Performance, Unbonded

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