Modified Three-Parameter Power Model to Predict Moment-Rotation Curve of Top- and Seat-Angle Connection
American Journal of Civil Engineering
Volume 5, Issue 1, January 2017, Pages: 50-59
Received: Dec. 4, 2016; Accepted: Dec. 15, 2016; Published: Jan. 18, 2017
Views 2965      Downloads 112
Authors
Ali Ahmed, Department of Civil Engineering, Stamford University Bangladesh, Dhaka, Bangladesh
Norimitsu Kishi, Kushiro National College of Technology, Otanoshike, Kushiro, Japan
Article Tools
Follow on us
Abstract
This study conducted on improving three-parameter power model [1] to estimate ultimate moment of connections based on the failure mechanisms developed by more practical means and finally, to predict moment-rotation relations of top- and seat-angle connections for intrinsic replacement of experimental curves and/or finite element (FE) analysis results. Bolt stiffness, shear and bending deformation of tension angle and prying force acted on tension angle are considered to determine the ultimate moment of connections implementing two possible failure mechanisms. These failure mechanisms are developed based on the concept of T-stub model [2] and adjusted the position of plastic hinges applying advanced FE analysis method [3-6]. Then, moment-rotation (Mr) characteristics of top- and seat-angle connections are constructed applying proposed modified three-parameter power model. Applicability of the proposed formulation is examined by comparing Mr curves and ultimate moment capacities with those of Kishi-Chen power model, FE analyses [3, 4] and experiments [7, 8]. The comparison implies that proposed formulation and Kishi-Chen’s method both achieved closer approximation for maximum of cases and better accuracy for the modified cases to drive Mr curves of the connections; but ultimate moments of the connections defined by the proposed method is more realistic than that predicted by Kishi-Chen power model.
Keywords
Moment-Rotation Relation, Prying Action, Ultimate Moment, Initial Stiffness, Failure Mechanism, Top- and Seat-Angle Connection
To cite this article
Ali Ahmed, Norimitsu Kishi, Modified Three-Parameter Power Model to Predict Moment-Rotation Curve of Top- and Seat-Angle Connection, American Journal of Civil Engineering. Vol. 5, No. 1, 2017, pp. 50-59. doi: 10.11648/j.ajce.20170501.17
Copyright
Copyright © 2017 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
References
[1]
N. Kishi and W. F. Chen, “Moment- rotation relations of semi-rigid connections with angles.” Journal of Structural Engineering, ASCE, vol. 116(7), 1990, pp. 1813−1834.
[2]
CEN, Eurocode 3, ENV 1993-1-1, Design of Steel Structures. Annex J, Part 1.1: Joint in Building Frames. European Committee of Standardization, Brussels, 1997.
[3]
A. Ahmed, N. Kishi, K. G. Matsuoka and M. Komuro, “Nonlinear analysis on prying of top- and seat-angle connections.” Journal of Applied Mechanics, JSCE, vol. 4, 2001, pp. 227−236.
[4]
A. Ahmed, “Finite element analysis and modeling of Mr relation for connections with angles”, Ph.D. thesis, Department of Civil Engineering and Architecture, Muroran Institute of Technology, Japan, March, 2002.
[5]
M. Komuro, N. Kishi and W. F. Chen, “Elasto-plastic FE analysis on moment-rotation relations of top-and seat-angle connections”, 5th International Workshop on Connections in Steel Structures: Behaviour, Strength and Design, Faculty of Civil Engineering and Geosciences of the Delft University of Technology, Amsterdam, 2004, pp. 111-120.
[6]
A. Pirmoz, A. S. Khoei, E. M. Rezapour and A. S. Daryan, “Moment-rotation behaviour of bolted top-seat angle connections”, Journal of Constructional Steel Research, vol. 65, 2009, pp. 973-984.
[7]
A. Azizinamini, J. H. Bradburnand J. B. Radziminski, “Static and cyclic behavior of semi-rigid steel beam-column connections”,Structural research studies, Department of Civil Engineering, University of South Carolina, Columbia, S. C., March, 1985.
[8]
W. L. Harper, “Dynamic response of steel frames with semi- rigid connections”, Structural research studies, Department of Civil Engineering, University of South Carolina, Columbia, S. C., May, 1990.
[9]
A. Abolmaali, A. Kukreti, A. Motahari and M. Ghassemieh, “Energy dissipation characteristics of semi-rigid connections”, Journal of Constructional Steel Research, vol. 65, no. 5, 2009, pp. 1187-1197.
[10]
T. Beland et al., “Experimental behavior of bolted angles and beam-column connections”, Proceedings of the Structural Congress 2014, ASCE, Boston, MA, April 3-5, 2014, pp. 2405-2416.
[11]
K. Weynand, J. P. Jaspart and M. Steenhuis, “The stiffness model of revised Annex J of Eurocode 3”, In: Bjorhovde R., Colson A., Zandonini R., editors, “Connections in steel structures III”, Proceedings of the 3rd international workshop on connections in steel structures, 1995.
[12]
C. Faella, V. Piluso and G. Rizzano, “Prediction of the flexural resistance of bolted connections with angles”, IABSE Colloquium on Semirigid Structural Connections, Istanbul, September, 1996, pp. 25−27.
[13]
A. M. Citipitioglu, R. M. Haj-Ali and D. W. White, “Refined 3D finite element modeling of partially restrained connections including slip”, Journal of Constructional Steel Research, vol. 58(5-8), 2002, pp. 995-1013.
[14]
N. Kishi and W. F. Chen, “Data base of steel beam-to-column connections”, Structural Engineering, Report No. CE-STR-86-26, School of Civil Engineering, Purdue University, West Lafayette, IN, 1986.
[15]
J. B. Davison, P. A. Kirby and D. A. Nethercot, “Rotational stiffness characteristics of steel beam-to-column connections”, Journal of Constructional Steel Research, vol. 8(C), 1987, pp. 17-54.
[16]
A. Ahmed and R. Hasan, “Effect and Evaluation of Prying Action for Top- and Seat-Angle Connections”, International Journal of Advanced Structural Engineering, vol. 7, no. 2, 2015, pp. 159-169.
[17]
J. C. Rathbun, “Elastic properties of riveted connections”, Trans. ASCE, no.1933, 101, 1936, pp. 524−563.
[18]
A. R. Monforton and T. S. Wu, “Matrix analysis of semi-rigidly connected frames”, Journal of the Structural Division, ASCE, vol. 87, no. 6, 1963, pp. 13−42.
[19]
E. Lightfoot and A. P. LeMessurier, “Elastic analysis of frameworks with elastic connections”, Journal of the Structural Division, ASCE, vol. 100, no. 6, 1974, pp. 1297−1309.
[20]
T. S. Tarpy and J. W. Cardinal, “Behavior of semi-rigid beam-to-column end plate connections”, Joints in Structural Steelwork, J. H. Howlett et al., eds, Pentech Press, London, 1981, pp. 2.3−2.25.
[21]
E. M. Lui and W. F. Chen, “Strength of H-columns with small end restraints”, Journal of the Institution of Structural Engineers, London, vol. 61B(1), 1983, pp. 17−26.
[22]
S. W. Jones, P. A. Kirby and D. A. Nethercot, “Effect of semi-rigid connections on steel column strength”, Journal of Construction Steel Research, vol. 1, no. 1, 1980, pp. 38−46.
[23]
S. W. Jones, P. A. Kirby and D. A. Nethercot, “Modeling of semi-rigid connection behavior and its influence on steel column behaviour”, Joints in Structural Steelwork, J. H. Howlett, W. M. Jenkins, and R. Stainsby, eds, Pentech Press, London, 1981, pp. 5.73−5.78.
[24]
M. J. Frye and G. A. Morris, “Analysis of flexibly connected steel frames”, Canadian J. of Civil Engineers, vol. 2(3), 1975, pp. 280−291.
[25]
E. M. Lui, and W. F. Chen, “Analysis and behavior of flexibly jointed frames”, Engineering Structures Journal, Buttersworth, U. K., vol. 8, 1986, pp. 107−118.
[26]
R. M. Richard and B. J. Abbott, “Versatile elastic-plastic stress-strain formula”, Journal of Engineering Mechanical Division, ASCE, vol. 101(4), 1975, pp.511−515.
[27]
A. Colson and J. M. Louveau, “Connections Incidence on the Inelastic Behavior of Steel Structures”, Euromech Colloguium 174, 1983.
[28]
D. C. Drucker, “The effect of shear on the plastic bending of beams”, Journal of Applied Mechanics, vol. 23(4), 1956, pp. 509−514.
[29]
W. F. Chen and N. Kishi, “Semi-rigid steel beam-to-column connections: Data Base and Modeling”, Journal of Structural Engineering, ASCE, vol. 115(1), 1989, pp. 105−119.
[30]
B. Yang, and K. Tan, “Behavior of Composite Beam-Column Joints in a Middle-Column-Removal Scenario: Experimental Tests”, Journal of Structural Engineering, ASCE, vol. 140, No. 2, February, 2014.
ADDRESS
Science Publishing Group
1 Rockefeller Plaza,
10th and 11th Floors,
New York, NY 10020
U.S.A.
Tel: (001)347-983-5186