PUNCHING SHEAR STRENGTHENING OF REINFORCED CONCRETE FLAT PLATES USING CARBON FIBER REINFORCED POLYMERS

This research presents a strengthening technique for increasing punching shear resistance in reinforced concrete flat plates using carbon fiber reinforced polymers (CFRPs). This strengthening method employs CFRP strips in the vertical direction as shear reinforcement around the concentrated load area in a specified pattern. Experimental load deflection curves, strain measurements, and failure modes are reported for 4 strengthened specimens and two reference specimens tested for the research reported here. The results show that, by using a sufficient amount of CFRP strips in an efficient configuration, the failure surface can be shifted away from the column. The load carrying capacities of the strengthened reinforced concrete slabs are increased with increasing amount of vertical CFRP reinforcement used in a wider area. Punching shear strengths of test specimens are augmented up to 51% relative to the control specimens. The pre- and postpunching behavior of the specimen with the highest increase in load carrying capacity is better than that of the reference specimen designed according to the current requirements of ACI 318-02. ACI 318-02 and CEB-FIP Model Code 90 requirements for punching shear design are critically examined in the light of current experimental findings.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339445
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Binici, B
  • Bayrak, O
• Publication Date: 2003-9

Language

• English

Media Info

• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: p. 1173-82
• Serial:
  • Journal of Structural Engineering
  • Volume: 129
  • Issue Number: 9
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9445
  • Serial URL: http://ascelibrary.org/loi/jsendh

Subject/Index Terms

• TRT Terms: Carbon fibers; Fiber reinforced concrete; Fiber reinforced plastics; Plates (Engineering); Reinforced concrete; Shear reinforcement; Shear strength; Strengthening (Maintenance); Structural connection; Structural engineering
• Subject Areas: Bridges and other structures; Design; Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00961773
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 1 2003 12:00AM