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|Title:||Response limits of blast-resistant slabs|
|Authors:||United States. Army. Corps of Engineers. Omaha District.|
Woodson, Stanley C.
Reinforced concrete slabs
|Publisher:||Structures Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||Technical report (U.S. Army Engineer Waterways Experiment Station) ; SL-90-11.|
Abstract: The use of some type of shear reinforcement (lacing bars or stirrups) is required by current manuals for blast-resistant design. The primary purpose of this reinforcement is not to resist shear stresses, but rather to improve performance in the large-deflection region by tying the two principal reinforcement mats together. The shear reinforcement design criteria of the current design manuals, particularly the widely used Draft TM 5-1300, appear to be overly conservative. The design criteria are based on an incomplete test series. Recent tests indicate that slabs with stirrups can sustain support rotations significantly larger than allowed by the manual. If overly conservative design criteria are eliminated, the structures can be designed with more confidence and constructed more economically than current procedures allow. Suggestions for new design guidelines are presented. Further testing and/or analyses are needed to allow validation or modification of the suggested revisions. These guidelines are primarily based on response limits . An analytical procedure for more accurately determining shear reinforcement requirements is needed.
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