A RATIONAL THEORY FOR THE FUNCTION OF WEB REINFORCEMENT

A TEST PROGRAM IS DESCRIBED WHICH WAS UNDERTAKEN TO ANSWER THE TWO BASIC QUESTIONS: (1) WHAT IS THE STRUCTURAL FUNCTION OF WEB REINFORCEMENT? AND (2) WHAT IS THE RELATIONSHIP BETWEEN THE SHEAR FORCE AND THE REQUIREMENT FOR WEB REINFORCEMENT? ELEVEN SERIES OF REINFORCED CONCRETE BEAMS COMPRISING 44 SPECIMENS WERE TESTED FOR THIS PURPOSE. THREE SERIES HAD WEB REINFORCEMENT CONSISTING OF BENT-UP BARS, THREE HAD INCLINED STIRRUPS, AND FIVE HAD VERTICAL STIRRUPS. TO PROVE A RATIONAL BASIS FOR EXPLAINING THE STRUCTURAL FUNCTION OF WEB REINFORCEMENT, A DISCUSSION OF INTERNAL FORCES PRECEDES THE TEST REPORT. BEGINNING WITH A STUDY OF STRESS TRAJECTORIES, THE PRINCIPLE OF INTERNAL ARCHES IS DEVELOPED AND LEADS TO THE REALIZATION THAT THE PURPOSE OF WEB REINFORCEMENT IS TO PRODUCE SUPPORTS FOR THE INTERNAL ARCHES AND THAT NO DIRECT RELATIONSHIP EXISTS BETWEEN THE SHEAR FORCE AND THE REQUIREMENT FOR WEB REINFORCEMENT. THE PRIME OBJECTIVE OF THE TEST PROGRAM WAS TO SUBSTANTIATE THE VALIDITY OF THIS PRINCIPLE OF INTERNAL ARCHES. /AUTHOR/

• Supplemental Notes:
  • Vol 66, No 3, PP 185-197, 14 FIG, 4 TAB, 10 REF, 1 APP
• Authors:
  • Kani, G N
• Publication Date: 1969-3

Media Info

• Serial:
  • Am Concrete Inst Journal & Proceedings

Subject/Index Terms

• TRT Terms: Arches; Beams; Concrete; Internal forces; Material reinforcement; Reinforced concrete; Shear stress; Specimens; Stirrups; Structural analysis; Structural supports; Testing; Webbing
• Uncontrolled Terms: Concrete beams; Shear forces
• Old TRIS Terms: Supports
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00209040
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 22 1994 12:00AM