Long Term Deformation in Prestressed Concrete Bridges |
Author(s): |
| MD Jawed Nayeem , J. C Bose University of Science & Technology YMCA, Faridabad, India; MD Azim Equbal Farooqui, Indian Institute of Technology, Roorkee , India |
Keywords: |
| Long Term Deformation, Time-Dependent Effects, Creep, Shrinkage, Relaxation |
Abstract |
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Indeterminate prestressed concrete bridges include continuous and rigid frame bridges. They are mainly constructed by cantilever construction. The prestressing forces, which are introduced in consecutive stages, will be subjected to gradual change due to creep and shrinkage of concrete and stress relaxation of prestressing steel. The analysis of the prestress loss and associated deformations becomes more involved when the concrete segments are joined to form a statically indeterminate structure. Time-dependent statically indeterminate forces gradually develop, causing further stress redistribution in the bridge. The bridge has to be analyzed for time-dependent effects at each stage to estimate the deformation. The present paper presents a review of long term deformation in prestresses concrete bridges. |
Other Details |
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Paper ID: IJSRDV8I50432 Published in: Volume : 8, Issue : 5 Publication Date: 01/08/2020 Page(s): 545-553 |
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