An Investigation of Beam-to-Column Connections for Composite Structural Systems
Smith, Steven John
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https://hdl.handle.net/2142/83448
Description
Title
An Investigation of Beam-to-Column Connections for Composite Structural Systems
Author(s)
Smith, Steven John
Issue Date
1997
Doctoral Committee Chair(s)
Parsons, I.D.
Department of Study
Civil Engineering
Discipline
Civil Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Civil
Language
eng
Abstract
I-beams with angle connections are becoming the standard framing method for composite structures. We claim that closed sections are often a more appropriate member selection. We also present the cuff connection; a novel beam-to-column connection element suited to closed structural members. We report the results of experimental and numerical investigations of various pultruded I-beam and box section beam-to-column connections. The experimental results show the stiffness and strength developed by box section connections to be clearly superior to that of the I-beams. The finite element models consistently reproduce the linear elastic connection and overall frame behavior to within 10%. We developed two simplified design models for composite frames with semi-rigid connections: an Euler beam model with variable connection parameters to account for joint flexibility, and a simplified finite element model. The beam model does not produce acceptable results; the simplified finite element model retains nearly all the accuracy of the full finite element model using a considerably reduced amount of effort.
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