Effective Slab Width for Composite Steel Bridge Members (2005) / Chapter Skim
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4.3 Suggested Research
4.3 Suggested Research
Pages 66-68
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From page 66... ...
The simplicity of this recommendation results from an extensive set of analyses on various bridge configurations culminating in the following two consistently observed trends: • Full width was typically acting at cross sections where it was most needed, i.e., where moments and hence performance ratios would be highest; in the cases where the effective width was less than full width at such cross sections, that cross section had considerable excess flexural capacity, and • An extensive "impact analysis" based on Process 1250 principles revealed that more cumbersome curvefit expressions for effective width, although more accurate, were not significantly so in terms of the governing rating factor (RF) of the bridge investigated.
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From page 67... ...
Whether the effective width provisions for slab-on-girder systems can or should be reconciled with the effective width provisions for segmental prestressed concrete box girders is a reasonable question. Posited another way, for example, why should a deck in a segmental box girder experience shear lag differently than a deck in a tub girder?
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From page 68... ...
This report presents only comparison of one composite specimen to one noncomposite specimen, so it is unreasonable to assume that the material presented here applies to all conditions.
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