WIT Press


New Design Method For PSC Girder With Incremental Prestress

Price

Free (open access)

Paper DOI

10.2495/CMEM010401

Volume

30

Pages

10

Published

2001

Size

1,202 kb

Author(s)

M. Y. Hun, C. Lee, J. K. Kim

Abstract

New design method for PSC girder with incremental prestress M.Y. Han', C. Lee', J.K. Kim' ^Department of Civil Engineering, Ajou University, Korea. ^Department of Architectural Engineering, Chung-Ang University, Korea. * Department of Civil Engineering Korea Advanced Institute of Science and Technology, Korea. Abstract Prestress forces in traditional PSC (prestressed concrete) girders are applied at the beginning stage of construction in order to limit extreme concrete fiber stresses within the code-specified allowable stresses under service loads. As a girder span increases, the additional increases of extreme concrete fiber stresses need to be reduced by the increase of sectional dimensions in order to limit extreme stresses. This prohibited traditional PSC girders from being economical long span bridges and it is current practice to construct them for the bridges with maximum span of 30m. In order to overcome the limitations on their spans of traditional PSC girder, a new prest

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