Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30121
An Analytical Study on Rotational Capacity of Beam-Column Joints in Unit Modular Frames

Authors: Kyung-Suk Choi, Hyung-Joon Kim


Modular structural systems are constructed using a method that they are assembled with prefabricated unit modular frames on-site. This provides a benefit that can significantly reduce building construction time. The structural design is usually carried out under the assumption that their load-carrying mechanism is similar to that of traditional steel moment-resisting systems. However, both systems are different in terms of beam-column connection details which may strongly influence the lateral structural behavior. Specially, the presence of access holes in a beam-column joint of a unit modular frame could cause undesirable failure during strong earthquakes. Therefore, this study carried out finite element analyses (FEMs) of unit modular frames to investigate the cyclic behavior of beam-column joints with the access holes. Analysis results show that the unit modular frames present stable cyclic response with large deformation capacities and their joints are classified into semi-rigid connections even if there are access holes.

Keywords: Unit modular frame, steel moment connection, nonlinear analytical model, moment-rotation relation, access holes.

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2268


[1] M. T. Gorgolewski, P. J. Grubb, and R. M. Lawson, Modular Construction Using Light Steel Framing: Design of Residential Buildings. Berkshire: Steel Construction Institute, 2001.
[2] C. D. Annan, M. A. Youssef, and M. H. El Naggar, “Experimental evaluation of the seismic performance of modular steel-braced frames”, Engineering Structures, 31.7, pp.1435~1446, Mar. 2009.
[3] R. M. Lawson, R. G. Ogden, and R. Bergin, “Application for Modular Construction in High-Rise Buildings”, J. Archi. Eng., 18, pp.148~156, 2012
[4] S. G. Hong, B. H. Cho, K. S. Chung and J. H. Moon, “Behavior of Framed Modular Building System with Double Skin Steel Panels”, J. Constr. Steel Res., 67, pp.936~946, 2011.
[5] D. J. Fielding, and J. S. Huang, “Shear in steel beam-to-column connections”, Welding Journal, 50.7,pp.313~326, Jul. 1971.
[6] H. Krawinkler, “Shear in beam-column joints in seismic design of steel frames”, Engineering Journal, 15.3, pp.82~91, 1978.
[7] ABAQUS 6.10, Analysis User’s Manual, Providence, RI: Dassault Systemes Simulia Corp., 2010.
[8] AISC, Seismic Provisions for Structural Steel Buildings, Chicago, IL: Americal Institute of Steel Construction, 2005.
[9] AIK, Korean Building Code 2009 (KBC 2009), Seoul: Architectural Institute of Korea, 2010.
[10] CEN, EN 1993-1-8:2005, Eurocode 3: design of steel structures, part 1.8: design of joints, London: British Standards Institution, 2005.