BOLTED SHEAR CONNECTORS PERFORMANCE IN SELF-COMPACTING CONCRETE INTEGRATED WITH COLD-FORMED STEEL SECTION

Authors

  • MUSTAPHA MUHAMMAD LAWAN CONSTRUCTION RESEARCH CENTRE, UNIVERSITI TEKNOLOGI MALAYSIA (UTM-CRC)
  • MAHMOOD MD TAHIR CONSTRUCTION RESEARCH CENTRE, UNIVERSITI TEKNOLOGI MALAYSIA (UTM-CRC)
  • JAHANGIR MIRZA CONSTRUCTION RESEARCH CENTRE, UNIVERSITI TEKNOLOGI MALAYSIA (UTM-CRC)

Keywords:

BOLTED SHEAR CONNECTORS, SELF-COMPACTING CONCRETE, COLD-FORMED STEEL, COMPOSITE BEAM, LONGITUDINAL SPACING, PUSH-OUT TEST

Abstract

IN CONVENTIONAL COMPOSITE CONSTRUCTION INVOLVING HOT-ROLLED STEEL SECTION, THE COMPOSITE ACTION IS USUALLY ACHIEVED BY USING CONVEN-TIONAL HEADED SHEAR STUDS CONNECTORS. HOWEVER, USE OF HEADED STUDS IS NOT PRACTICAL FOR COLD-FORMED STEEL (CFS) SECTION DUE TO ITS VERY THIN FORM THAT IS DIFFICULT TO WELD. A SUITABLE BOLT AND NUT TYPE SHEAR CONNECTOR WAS PROPOSED; EXPERIMENTAL TESTS WERE CARRIED OUT TO EVALUATE ITS PERFORMANCE. THIS STUDY ALSO INVESTIGATED THE USE OF SELF-COMPACTING CONCRETE (SCC) INTEGRATED WITH CFS BY MEANS OF BOLTED SHEAR CONNECTORS TO DEVELOP COMPOSITE ACTION. THEREFORE, THE OBJECTIVE OF THIS PAPER WAS TO INVESTIGATE THE PERFORMANCE OF BOLTED SHEAR CONNECTORS IN SCC INTEGRATED WITH CFS SECTION AS COMPOSITE BEAM SYSTEM. EIGHTEEN PUSH-OUT TEST SPECIMENS COMPRISING OF M12, M14 AND M16 SIZED BOLTED SHEAR CONNECTOR OF GRADE 8.8 WITH LONGITUDINAL SPACINGS OF 150 MM, 250 MM AND 300 MM CENTERS WERE FABRICATED, CAST AND TESTED UNTIL FAILURE. THE EXPERIMENTAL RESULTS SHOWED THAT ALL BOLTED SHEAR CONNECTORS POSSESSED A GOOD SHEAR RESISTANCE CAPACITY. NOT MUCH DIFFERENCE IN STRENGTH CAPACITY OF SPECIMENS WITH M14 AND M16 BOLTED SHEAR CONNECTORS WAS FOUND, PERHAPS DUE TO CFS FAILURE. VARYING THE SIZE AND LONGITUDINAL SPACING OF THE BOLTED SHEAR CONNECTORS REVEALED THAT THE CONNECTORSÂ STRENGTH CAPACITY CHANGED SIGNIFICANTLY

Author Biographies

MUSTAPHA MUHAMMAD LAWAN, CONSTRUCTION RESEARCH CENTRE, UNIVERSITI TEKNOLOGI MALAYSIA (UTM-CRC)

CONSTRUCTION RESEARCH CENTRE, UNIVERSITI TEKNOLOGI MALAYSIA

PHD STUDENT

MAHMOOD MD TAHIR, CONSTRUCTION RESEARCH CENTRE, UNIVERSITI TEKNOLOGI MALAYSIA (UTM-CRC)

CONSTRUCTION RESEARCH CENTER, UNIVERSITI TEKNOLOGI MALAYSIA

PROFESSOR

JAHANGIR MIRZA, CONSTRUCTION RESEARCH CENTRE, UNIVERSITI TEKNOLOGI MALAYSIA (UTM-CRC)

CONSTRUCTION RESEARCH CENTRE, UNIVERSITI TEKNOLOGI MALAYSIA

PROFESSOR

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Published

2016-02-17

Issue

Vol. 13 No. 4 (2016)

Section

Articles

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