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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Assessment of Stresses in Reinforcement of Kishwaukee River Bridge
Author(s): J. Halvonik and M. W. Wang
Publication: Special Publication
Appears on pages(s): 109-122
Keywords: bond, bridge, crack width, shear cracks, shear reinforcement, shear stresses
Abstract:Southbound bridge, as a first part of two Kishwaukee River Bridges, suffers from extensive cracking in the webs since its construction. Eight segments on either side of each pier are heavily cracked. The first part of the article deals with reasons and conditions of this damage. For further investigation it was necessary to determine the most damaged webs of the bridge. The magnitude of steel stresses in shear reinforcement was assumed to be a major criterion for the severity of damage. Varying shear resistance of the joints during construction and after retrofit caused a complex flow of internal forces. Ordinary models for steel stress calculations have become unworkable. Therefore, a model for assessment of stresses in shear reinforcement based on measured crack width has been developped. The model is based on CEB-FIP model for crack width prediction, that was modified for inclined cracks.
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