Chapter
Apr 26, 2012
NURBS Strands Modeling of Prestressed Concrete Bridges
Authors: Dawei Yang [email protected] and Qiao HuangAuthor Affiliations
Publication: ICCTP 2009: Critical Issues In Transportation Systems Planning, Development, and Management
Abstract
To establish the unified description for strands in prestressed concrete girder bridges, a NURBS strands model is proposed in which Non-Uniform Rational Basic Spline (NURBS) is adopted. Prestressed strands in design and construction are analyzed, which presents the reasons for selection of NURBS as the strands model. Compared with the Fold Line Approximation Model (FLAM), the NURBS model needs fewer parameters for pre-processor and gives higher accuracy in the calculation of prestress equivalent loads and loss of tendon forces. The example using the NURBS model is fit to be a unified description method for strands in all kinds of prestressed structures.
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ICCTP 2009: Critical Issues In Transportation Systems Planning, Development, and Management
Pages: 1 - 7
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© 2009 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Affiliations
School of Science and Engineering of Communications, Harbin Institute of Technology, Heilongjiang Harbin 150090. E-mail: [email protected]
Qiao Huang
School of Science and Engineering of Communications, Harbin Institute of Technology, Heilongjiang Harbin 150090
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