PUNCHING SHEAR BEHAVIOR OF LIGHTWEIGHT CONCRETE SLABS AND SHELLS

Results of an experimental investigation of the punching shear strength of reinforced and prestressed lightweight concrete slabs and shells representative of the exterior walls of offshore structures are summarized. Eight continuous slabs, one single-span slab, and six single-span shells were tested. The main variables investigated were amount of shear reinforcement, shell curvature, prestressing, span continuity condition, and size of loaded area. The punching shear strengths observed were much higher than those predictied by the 1983 ACI Building Code (ACI 318-83), particularly in the specimens with shear reinforcement and curvature. The higher strengths were primarily a result of the following: the relatively small span-to-thickness ratios of the specimens; superior performances of the headed shear reinforcing bars used in the study when compared to conventional stirrups; and the presence of arch action produced by shell curvature.

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• Corporate Authors:

  American Concrete Institute

  P.O. Box 19150, Redford Station, 22400 Seven Mile Road
  Detroit, MI  United States  48219
• Authors:
  • McLean, D I
  • Phan, L T
  • Lew, H S
  • White, R N
• Publication Date: 1990-7

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 386-392
• Serial:
  • ACI Structural Journal
  • Volume: 87
  • Issue Number: 4
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-3241
  • Serial URL: http://www.concrete.org/PUBS/JOURNALS/SJHOME.ASP

Subject/Index Terms

• TRT Terms: Concrete; Lightweight concrete; Offshore structures; Prestressed concrete; Puncture resistance; Reinforced concrete; Reinforcing steel; Shear stress; Shells (Structural forms); Slabs
• Uncontrolled Terms: Punching shear
• Subject Areas: Bridges and other structures; Highways; Materials; I20: Design and Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00496424
• Record Type: Publication
• Report/Paper Numbers: Title No. 87 S36
• Files: TRIS
• Created Date: Aug 31 1990 12:00AM