Collapse behaviour of sway frames with end-plate connections

Abstract A test program consisting of 10 frame specimens loaded to collapse at the National University of Singapore as part of the broad investigation on “analysis and design of semi-rigid frames” has been completed and briefly reported in Liew et al. (1997). This paper provided the details of three test specimens and describes the test observations of the sway frames under the combined actions of gravity and lateral loads. The load–deformation responses of the test frames and their connections under sequential and non-sequential loading are determined and compared with theoretical predictions. The moment–rotation characteristics of such connections are determined so that advanced analysis can be carried out and compared with the test results to determine if the ultimate load carrying capacity and load–deflection characteristics of such frames can be predicted by the proposed analysis method. This paper focuses the discussion on three of the frame specimens constructed using extended end plate connections. Comparison of test results with second-order refined plastic hinge analysis and Eurocode are made using the moment–rotation characteristics of individual beam-to-column connections established through tests.

[1]  David A. Nethercot,et al.  Prediction of initial stiffness and available rotation capacity of major axis composite flush endplate connections , 1997 .

[2]  Lynn S. Beedle,et al.  Basic Column Strength , 1960 .

[3]  Wai-Fah Chen,et al.  Plastic Design and Second-Order Analysis of Steel Frames , 2013 .

[4]  Donald W. White,et al.  Notional‐Load Plastic‐Hinge Method for Frame Design , 1994 .

[5]  G. Powell,et al.  3D Beam‐Column Element with Generalized Plastic Hinges , 1986 .

[6]  Donald W. White,et al.  Second‐Order Refined Plastic‐Hinge Analysis for Frame Design. Part II , 1993 .

[7]  Donald W. White,et al.  Limit states design of semi-rigid frames using advanced analysis: Part 1: Connection modeling and classification , 1993 .

[8]  Jat-Yuen Richard Liew,et al.  Advanced analysis for frame design , 1992 .

[9]  W. McGuire.  Plastic hinge based methods for advanced analysis and design of steel frames: An assessment of the state-of-the-art: Edited by D. F. White and W. F. Chen. Structural Stability Research Council, Bethlehem, PA, March 1993. ISBN 1-879749-53-X , 1994 .

[10]  A W Beeby,et al.  CONCISE EUROCODE FOR THE DESIGN OF CONCRETE BUILDINGS. BASED ON BSI PUBLICATION DD ENV 1992-1-1: 1992. EUROCODE 2: DESIGN OF CONCRETE STRUCTURES. PART 1: GENERAL RULES AND RULES FOR BUILDINGS , 1993 .

[11]  N. Kishi,et al.  Moment‐Rotation Relations of Semirigid Connections with Angles , 1990 .

[12]  E. Gaylord,et al.  Design of Steel Structures , 1972 .

[13]  Wai-Fah Chen,et al.  Stability design of semi-rigid frames , 1996 .

[14]  N. E. Shanmugam,et al.  Testing of semi-rigid unbraced frames for calibration of second-order inelastic analysis , 1997 .