A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effectiveness of Attached Bridge Widenings
In 1965, California adopted a policy of attaching widenings. In 1973, a study of fifty-eight widened structures was made to evaluate the effectiveness of this attachment policy. The primary conclusions are: attached widenings provide a smoother riding surface, less maintenance, improved aesthetics and improved safety over what is provided by non-attached widenings; the reclaimed deck area under curbs or sidewalks cause the most problems; attachment through lapped top and bottom deck reinforcing steel gives better performance than does attachment through dowels or key ways; widenings with steel girders are the least troublesome with precast prestressed concrete girders next and cast-in-place conventionally reinforced concrete widenings causing the most problems; transfer of dead load from the widening to the original girders by plastic deformation is not a problem; and the effect of plastic deformation can be greatly minimized by delaying deck closure pours.
Effectiveness of Attached Bridge Widenings
In 1965, California adopted a policy of attaching widenings. In 1973, a study of fifty-eight widened structures was made to evaluate the effectiveness of this attachment policy. The primary conclusions are: attached widenings provide a smoother riding surface, less maintenance, improved aesthetics and improved safety over what is provided by non-attached widenings; the reclaimed deck area under curbs or sidewalks cause the most problems; attachment through lapped top and bottom deck reinforcing steel gives better performance than does attachment through dowels or key ways; widenings with steel girders are the least troublesome with precast prestressed concrete girders next and cast-in-place conventionally reinforced concrete widenings causing the most problems; transfer of dead load from the widening to the original girders by plastic deformation is not a problem; and the effect of plastic deformation can be greatly minimized by delaying deck closure pours.
Effectiveness of Attached Bridge Widenings
R. V. Shaw (author) / C. F. Stewart (author)
1974
57 pages
Report
No indication
English
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