BEHAVIOR ANALYSIS OF BAR GAPS IN WELDED YT-JOINTS FOR ROLLED-STEEL CIRCULAR HOLLOW SECTIONS

Authors

  • ROSILENE FáTIMA VIEIRA STATE UNIVERSITY OF CAMPINAS - UNICAMP
  • JOÃO ALBERTO VENEGAS REQUENA STATE UNIVERSITY OF CAMPINAS - UNICAMP
  • ARLENE MARIA SARMANHO FREITAS FEDERAL UNIVERSITY OF OURO PRETO - UFOP
  • VINICIUS FERNANDO ARCARO STATE UNIVERSITY OF CAMPINAS - UNICAMP

Keywords:

CIRCULAR HOLLOW SECTIONS, JOINT, BAR GAP, FINITE-ELEMENT ANALYSIS, PARAMETRIC STUDY.

Abstract

WE PRESENT A PARAMETRIC ANALYSIS OF GAP VARIATION BETWEEN THE LAP BRACE AND THROUGH BRACE OF YT WELDED JOINTS FOR ROLLED-STEEL CIRCULAR HOLLOW SECTIONS ON PLANE STEEL STRUCTURES.  OUR AIM IS TO INVESTIGATE THE COLLAPSE BEHAVIOR OF YT-JOINTS UNDER LAP BRACE AXIAL COMPRESSION. IN PARTICULAR, WE FOCUS ON E/D0 RATIOS ABOVE 0.25 SO BENDING MOMENTS CAN BE TAKEN INTO ACCOUNT DURING THE DESIGN. WE FIND THAT JOINT FAILURE IS PRIMARILY DUE TO CHORD WALL PLASTIFICATION (MODE A) AND CROSS-SECTIONAL CHORD BUCKLING (MODE F) IN THE REGION UNDERNEATH THE LAP BRACE. OUR JOINT DESIGN FOLLOWED THE LIMIT STATES METHOD, AND OUR RESULTS WERE BASED ON A COMPARATIVE ANALYSIS OF THREE DIFFERENT METHODS: AN ANALYTICAL SOLUTION DERIVED FROM A SET OF INTERNATIONAL TECHNICAL NORMS, AN EXPERIMENTAL ANALYSIS, AND NUMERICAL MODELING USING ANSYS AS CALIBRATED BY OUR EXPERIMENTAL RESULTS.

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Published

2010-12-21

Issue

Vol. 7 No. 4 (2010)

Section

Articles

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