AN EXPERIMENTAL INVESTIGATION OF NEW BENT V-SHAPED SHEAR CONNECTOR

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HUSSEIN AL-KROOM
MUJAHED THNEIBAT
YASSIN ALGHRIR
VOLKER SCHMID

Abstract

THIS PAPER INVESTIGATES THE BEHAVIOR OF A NEW FORM OF V-SHAPED SHEAR CONNECTOR. THE CONNECTOR'S DEVELOPED SHAPE IS PROPOSED AS AN ECONOMICAL, EASILY PRODUCED ALTERNATIVE TO DIFFERENT TYPES OF SHEAR CONNECTORS, SUCH AS HEADED STUDS, CHANNEL SHEAR CONNECTORS, AND THE EXISTING V-SHEAR CONNECTORS. THE ASSESSMENT OF ITS PERFORMANCE IS CONDUCTED THROUGH AN EXPERIMENTAL WORK OF FOURTEEN PUSH-OUT TESTS. THE RESULTS SHOW THAT THE DEVELOPED V-SHAPED SHEAR CONNECTOR IS ABLE TO TRANSFER HIGHER SHEAR LOAD THAN THE CONVENTIONAL SHEAR CONNECTORS. IN ADDITION, ITS BEHAVIOR IS CONSIDERED AS DUCTILE. GEOMETRICAL PARAMETERS OF THE CONNECTOR ARE STUDIED TO OBSERVE THEIR INFLUENCE ON ITS BEHAVIOR. THE EXPERIMENTAL OUTCOMES SHOW THAT CHANGING THE LENGTH, WIDTH, AND THICKNESS OF THE CONNECTOR SIGNIFICANTLY AFFECTS ITS ULTIMATE STRENGTH WHILE THE CONNECTOR'S DUCTILE BEHAVIOR IS PRESERVED. ON THE OTHER HAND, CHANGING THE INNER DIAMETER OF THE CONNECTOR HAS NO INFLUENCE ON ITS PERFORMANCE. FURTHERMORE, THE WORK STUDIES THE EFFECT OF CREATING HOLES IN THE CONNECTOR AND THEN ADDING A TRANSVERSE REINFORCEMENT TO THE SPECIMEN. IT PROVES THAT NEITHER THE HOLES NOR THE TRANSVERSE REINFORCEMENT HAS SIGNIFICANT EFFECT ON SHEAR RESISTANCE AND THAT THE UPLIFT-DISPLACEMENT OF THE CONNECTOR IS IMPROVED. A COMPREHENSIVE COMPARISON BETWEEN THE PROPOSED SHEAR CONNECTOR AND COMMONLY USED CONNECTORS IS EXECUTED. BASED ON THE EXPERIMENTAL RESULTS, AN EMPIRICAL EQUATION IS SUGGESTED TO PREDICT THE LOAD CAPACITY OF THE CONNECTOR.

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