Lateral Load Analysis of Stand-off Anchor Bolt Connections Using the Load-Distribution Method
Publication: Practice Periodical on Structural Design and Construction
Volume 21, Issue 3
Abstract
A comprehensive method was derived for the analysis of stand-off anchor bolt connections with various stand-off distances that are subjected to lateral loading. The procedure applied the load-distribution method that is commonly used for shear wall analysis in buildings, and the base plate was treated as a rigid diaphragm. The lateral load resistance provided by each anchor bolt within the anchor bolt group was calculated on the basis of its lateral stiffness, which was defined as a function of the stand-off distance. Close agreement with finite-element analysis solutions for various stand-off distance conditions was found. An irregular distribution of lateral resistive forces within the anchor bolt group was found for connections with uneven stand-off distances compared to the uniform distribution found for connections with even stand-off distances. The intensity of lateral resistive forces provided by the anchor bolts was found to be impacted by the proximity of the individual anchor bolt to the center of rigidity of the connection and the eccentricity of the center of rigidity to the centroid of the anchor bolt group.
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Acknowledgments
The work described in this document culminated from research sponsored by the Alabama Department of Transportation (ALDOT) Project 930-683, titled “Design of Overhead Sign Structures for Fatigue Loads,” and the NCTSPM/ALDOT cosponsored project, titled “Evaluation of Anchor Bolt Clearance Discrepancies.” It is important to acknowledge other participants of the project, including the principal investigator, Fouad H. Fouad, Ph.D., P.E., chair and professor of the Department of Civil, Construction and Environmental Engineering, at the University of Alabama at Birmingham, and the hard work and dedication of the ALDOT Maintenance Bureau.
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Information
Published In
Practice Periodical on Structural Design and Construction
Volume 21 • Issue 3 • August 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Oct 19, 2015
Accepted: Dec 31, 2015
Published online: Feb 8, 2016
Discussion open until: Jul 8, 2016
Published in print: Aug 1, 2016
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