Session Start Date

11-6-2014

Session End Date

11-6-2014

Abstract

The Component Stiffness Method is a displacement compatibility method used to analyze C- and Z- section supported roof systems. The method provides a detailed analysis of the flexibility in the roof system and the distribution of forces as they flow out of the system. Parametric studies of the equations for typical roof systems have shown that by ignoring the flexibility of some of the components, the method can be simplified with little impact on the anchorage forces calculated. Changes have also been made to the way in which cross section deformations are incorporated into the method. This paper focuses on the changes to the supports + third point bracing configuration and compares the bracing force predicted by the revised equation to the existing equations. The prediction equations are applied to a series of purlins and sheathing systems to represent the ends of the spectrum and the results are compared.

Department(s)

Civil, Architectural and Environmental Engineering

Research Center/Lab(s)

Wei-Wen Yu Center for Cold-Formed Steel Structures

Meeting Name

22nd International Specialty Conference on Cold-Formed Steel Structures

Publisher

Missouri University of Science and Technology

Publication Date

11-6-2014

Document Version

Final Version

Rights

© 2014 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Improvements to the Prediction of Brace Forces in Z-Purlin Roof Systems with Support + Third Point Bracing

The Component Stiffness Method is a displacement compatibility method used to analyze C- and Z- section supported roof systems. The method provides a detailed analysis of the flexibility in the roof system and the distribution of forces as they flow out of the system. Parametric studies of the equations for typical roof systems have shown that by ignoring the flexibility of some of the components, the method can be simplified with little impact on the anchorage forces calculated. Changes have also been made to the way in which cross section deformations are incorporated into the method. This paper focuses on the changes to the supports + third point bracing configuration and compares the bracing force predicted by the revised equation to the existing equations. The prediction equations are applied to a series of purlins and sheathing systems to represent the ends of the spectrum and the results are compared.