New Design Method For PSC Girder With Incremental Prestress
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
Keywords
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