Location
Saint Louis, Missouri
Session Dates
18 Oct 1994
Abstract
A non-linear elastic analysis has been developed for determining the lateral deflections of, and stresses in, the unconnected flanges of simply-supported and continuous channel and Z-section purlins screw-fastened to sheeting and subject to either wind uplift or gravity loading. The analysis incorporates a model, based on a combination of those developed by Pekoz and Soroushian, and Thomasson, which depicts the unconnected purlin flange as a beam-column. The restraint against lateral deflection is provided primarily by the sheeting, and is represented by a linear extensional spring of stiffness k located at the level of the unconnected purlin flange. To verify the model, lateral deflections and failure stresses obtained from vacuum rig tests can be compared with those determined by the non-linear analysis. In this paper, results from vacuum rig tests on continuous Z-section purlins screw-fastened to sheeting and subject to simulated wind uplift and gravity loading are compared.
Department(s)
Civil, Architectural and Environmental Engineering
Research Center/Lab(s)
Wei-Wen Yu Center for Cold-Formed Steel Structures
Meeting Name
12th International Specialty Conference on Cold-Formed Steel Structures
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1994 University of Missouri--Rolla, All rights reserved.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Rousch, Catherine J. and Hancock, Gregory J., "Comparison of a Non-linear Purlin Model with Tests" (1994). CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018). 1.
https://scholarsmine.mst.edu/isccss/12iccfss/12iccfss-session2/1
Comparison of a Non-linear Purlin Model with Tests
Saint Louis, Missouri
A non-linear elastic analysis has been developed for determining the lateral deflections of, and stresses in, the unconnected flanges of simply-supported and continuous channel and Z-section purlins screw-fastened to sheeting and subject to either wind uplift or gravity loading. The analysis incorporates a model, based on a combination of those developed by Pekoz and Soroushian, and Thomasson, which depicts the unconnected purlin flange as a beam-column. The restraint against lateral deflection is provided primarily by the sheeting, and is represented by a linear extensional spring of stiffness k located at the level of the unconnected purlin flange. To verify the model, lateral deflections and failure stresses obtained from vacuum rig tests can be compared with those determined by the non-linear analysis. In this paper, results from vacuum rig tests on continuous Z-section purlins screw-fastened to sheeting and subject to simulated wind uplift and gravity loading are compared.
