Web Reinforcement Effects on Deep Beams

Abstract

REPORTS ON TESTS PN 35 SIMPLY SUPPORTED DEEP BEAMS OF SPAN/DEPTH RATIOS L/D RANGING FROM 1 TO 3 AND CLEAR SHEAR SPAN/DEPTH RATIOS X/D FROM 0.23 TO 0.7. THE EFFECTS OF SEVEN DIFFERENT TYPES OF WEB REINFORCEMENT ON DEFLECTIONS, CRACK WIDTHS, CRACK PATTERNS, FAILURE MODES, AND ULTIMATE LOADS IN SHEAR WERE STUDIED. IT WAS FOUND THAT THE EFFECTIVENESS OF THE VARIOUS TYPES OF WEB REINFORCEMENT DEPENDED ON THE L/D AND X/D RATIOS. FOR LOW L/D AND X/D RATIOS, ONLY HORIZONTAL WEB REINFORCEMENT AT CLOSE SPACING NEAR THE BOTTOM OF THE BEAM IS EFFECTIVE. /AUTHOR/