STUDY ON THE CAPACITY OF COLD-FORMED STEEL BUILT-UP BATTENED COLUMNS UNDER AXIAL COMPRESSION

Authors

  • M. ANBARASU ASSISTANT PROFESSOR IN CIVIL ENGINEERING, GOVERNMENT COLLEGE OF ENGINEERING, SALEM - 636011, INDIA
  • P. BHARATH KUMAR P.G STUDENT, DEPARTMENT OF CIVIL ENGINEERING, GOVERNMENT COLLEGE OF ENGINEERING, SALEM - 636 011, TAMILNADU, INDIA
  • S. SUKUMAR PROFESSOR, DEPARTMENT OF CIVIL ENGINEERING, GOVERNMENT COLLEGE OF ENGINEERING, SALEM - 636 011, TAMILNADU, INDIA

Keywords:

DIRECT STRENGTH METHOD, COLD-FORMED STEEL, BUILT-UP COLUMN, BATTENED COLUMN, LIPPED CHANNEL

Abstract

THIS PAPER PRESENTS THE THEORETICAL AND NUMERICAL INVESTIGATION RESULTS OF THE PIN ENDED COLD-FORMED STEEL BUILT-UP BATTENED LIPPED CHANNEL COLUMNS UNDER AXIAL COMPRESSION. THE FINITE ELEMENT MODEL WAS DEVELOPED USING THE FINITE ELEMENT SOFTWARE ABAQUS. COMPARISON OF FINITE ELEMENT ANALYSIS RESULTS WITH THE TEST RESULTS AVAILABLE IN THE LITERATURE SHOWS THAT THE ANALYSIS MODEL CAN SIMULATE THE BUCKLING BEHAVIOUR AND ULTIMATE CAPACITY OF COLD-FORMED STEEL BUILT-UP COLUMNS. THREE TYPES OF SECTIONS WERE SELECTED BASED ON THE LIMITATIONS PROVIDED IN AISI S100-2007 FOR PREQUALIFIED SECTIONS FOR SINGLE LIPPED CHANNEL. SPACING BETWEEN THE CHORDS WAS CHOSEN SUCH THAT MOMENT OF INERTIA ABOUT MAJOR AXIS EQUALS THE MOMENT OF INERTIA ABOUT MINOR AXIS. AFTER THE VERIFICATION OF THE FINITE ELEMENT MODEL PARAMETRIC STUDY HAS BEEN CARRIED OUT BY VARYING THE SLENDERNESS RATIO AND NUMBER OF BATTENS. TWO TYPES OF ANALYTICAL MODELS WERE USED TO OBTAIN THE ULTIMATE LOAD BY THE DIRECT STRENGTH METHOD. THE ULTIMATE LOADS FROM FEA AND DSM WERE COMPARED. AT THE END, A DESIGN RECOMMENDATION IS PROPOSED FOR DSM TO EVALUATE ULTIMATE STRENGTH OF THE LIPPED CHANNEL BUILT-UP BATTENED COLUMNS.

Author Biographies

M. ANBARASU, ASSISTANT PROFESSOR IN CIVIL ENGINEERING, GOVERNMENT COLLEGE OF ENGINEERING, SALEM - 636011, INDIA

CIVIL ENGINEERING

P. BHARATH KUMAR, P.G STUDENT, DEPARTMENT OF CIVIL ENGINEERING, GOVERNMENT COLLEGE OF ENGINEERING, SALEM - 636 011, TAMILNADU, INDIA

 

DEPARTMENT OF CIVIL ENGINEERING,

 

S. SUKUMAR, PROFESSOR, DEPARTMENT OF CIVIL ENGINEERING, GOVERNMENT COLLEGE OF ENGINEERING, SALEM - 636 011, TAMILNADU, INDIA

CIVIL ENGINEERING

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Published

2014-09-17

Issue

Vol. 11 No. 12 (2014)

Section

Articles

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