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External Prestress Reinforcement Design for Concrete Crosswise Beam Floor
Xu Fuquan, Song Yusuo
(China Academy of Building Research, Beijing〓100013,China)
Abstract:
External prestress reinforcement method has some advantages such as good reinforcement effect and low cost etc. Combined with practical engineering, authors discuss external prestress reinforcement design. Flexible and optimal strand arrangements scheme can effectively improve prestressed bar efficiency and lower cost.Authors discuss on some problems such as calculation of prestress losses, analysis of axial compressive stress, calculation of normal section bending bearing capacity, adjustment of structure stress, fireproof and anticorrosion of prestressed bar.
Key words:external prestress; prestress loss; axial compressive stress; normal section bending; bearing capacity
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