DYNAMIC SHEAR RESISTANCE OF THIN-WEBBED REINFORCED CONCRETE BEAMS

EXPERIMENTS WERE PERFORMED TO OBTAIN INFORMATION ON THE DYNAMIC SHEAR AND DIAGONAL TENSION RESISTANCE OF REINFORCED CONCRETE I-BEAMS CONSTRUCTED WITH WELDED-WIRE FABRIC AS WEB REINFORCEMENT. THESE EXPERIMENTS WERE IN SUPPORT OF THE ULTIMATE OBJECTIVE OF THE PROJECT, WHICH IS TO FORMULATE DESIGN CRITERIA FOR THIN-SHELL CONCRETE STRUCTURES TO WITHSTAND DYNAMIC LOADING SUCH AS IS PRODUCED BY THE DETONATION OF A NUCLEAR WEAPON. UNDER UNIFORMLY DISTRIBUTED LOADS, THE DYNAMIC DIAGONAL TENSION RESISTANCE OF THE BEAMS WAS FOUND TO BE SIGNIFICANTLY GREATER THAN THE STATIC DIAGONAL TENSION RESISTANCE. THE INCREASE IN RESISTANCE WAS ATTRIBUTED TO THE INCREASE IN TENSILE STRENGTH OF CONCRETE UNDER RAPID STRESSING. THE ULTIMATE SHEAR RESISTANCE OF THE BEAMS COULD NOT BE PRECISELY DETERMINED FROM THE TESTS BECAUSE ONLY THREE OF THE BEAMS FAILED IN SHEAR. HOWEVER, EVIDENCE WAS FOUND THAT THE DYNAMIC ULTIMATE RESISTANCE OF SUCH BEAMS IS ONLY SLIGHTLY GREATER THAN THE STATIC ULTIMATE RESISTANCE. /AUTHOR/

• Supplemental Notes:
  • Tech Rept R-534, 79 PP, 36 FIG, 10 TAB, 19 REF, 5 APP
• Corporate Authors:

  Naval Civil Eng Labs, Port Hueneme /US

  ,    
• Authors:
  • Fuss, D S
• Publication Date: 1967-6

Subject/Index Terms

• TRT Terms: Beams; Concrete; Dynamic loads; Dynamic resistance; I beams; Nuclear explosions; Reinforced concrete; Resistance (Electricity); Shear strength; Tensile strength; Tension; Welded wire fabrics
• Uncontrolled Terms: Concrete beams; Static resistance
• Old TRIS Terms: Diagonal tension
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00208416
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 12 1994 12:00AM