DISTRIBUTION OF END REACTIONS OF CONCRETE FLOOR SLABS UNDER CONCENTRATED LOADS

THE PROBLEM OF THE LATERAL DISTRIBUTION OF THE END REACTION, OR END SHEAR, OF A REINFORCED-CONCRETE FLOOR SLAB RESTING ON TWO RELATIVELY RIGID SUPPORTS, WHEN THE SLAB IS SUBJECTED TO CONCENTRATED LOADS SUCH AS THE WHEELS OF A TRUCK, IS DISCUSSED. BULLETIN 126 OF THE IOWA ENGINEERING EXPERIMENT STATION, PUBLISHED IN 1936, REPORTED EXPERIMENTAL RESULTS ON 20 INDIVIDUAL SLAB SPECIMENS. RESULTS INDICATED THE THICKNESS OF THE SLAB IS THE MOST-IMPORTANT FACTOR WHICH INFLUENCES THE EFFECTIVE WIDTH TO BE USED IN THE COMPUTATION OF VERTICAL END-SHEARING STRESSES IN THIS TYPE OF STRUCTURE. IN ORDER TO EXTEND THE RANGE OF THICKNESSES OF THE EXPERIMENTAL SLABS, ONE ADDITIONAL SLAB HAS BEEN CONSTRUCTED AND TESTED. THE DATA OBTAINED WITH THIS NEW, THICKER SLAB SUPPLEMENT THOSE PREVIOUSLY REPORTED IN BULLETIN 126, WHICH ARE INCLUDED. CONCLUSIONS ARE DRAWN ON THE BASIS OF RESULTS OBTAINED ON ALL 21 OF THE EXPERIMENTAL SLABS. THE PRINCIPAL CONCLUSION IS EMBODIED IN AN EMPIRICAL FORMULA FOR EFFECTIVE WIDTH FOR A SINGLE CONCENTRATED LOAD APPLIED ADJACENT TO A SUPPORT AND IN THE VICINITY OF THE LONGITUDINAL CENTERLINE. /AUTHOR/

• Record URL:
  https://onlinepubs.trb.org/Onlinepubs/hrbproceedings/32/32-009.pdf
• Supplemental Notes:
  • Vol 32, pp 144-160, 19 FIG, 4 TAB, 4 PHOT, 35 REF. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Spangler, M G
• Publication Date: 1953

Media Info

• Media Type: Digital/other
• Monograph Title: Proceedings of the Thirty-Second Annual Meeting of the Highway Research Board, Washington, D.C., January 13-16, 1953
• Serial:
  • Highway Research Board Proceedings
  • Volume: 32
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Bridge decks; Calculation; Concrete; Floors; Formulas; Loads; Reinforced concrete; Shear stress; Slabs; Thickness
• Uncontrolled Terms: Computation
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00209452
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Aug 15 1971 12:00AM