Session Start Date

10-17-2002

Abstract

Described in this paper is the application of a finite element model to a cold-formed steel C-section with a bearing stiffener installed between its flanges. This model has been used to determine both the web crippling capacity of the joist, and the forces that develop in the fasteners connecting the bearing stiffener to the joist. The finite element model was also used to carry out parametric studies of the stiffened joist assembly to determine the impact on the web crippling capacity and the fastener forces caused by variations in the assembly. Based on the results of these finite element studies, combined with available experimental work, a design expression has been proposed that can calculate the web crippling capacity of a cold formed steel C-section joist that has a bearing stiffener installed between the joist flanges. A second design expression has been proposed for predicting the forces in the fasteners that connect the joist to the stiffener. Predictions of both the web crippling capacity and the fastener forces are necessary for determining the ultimate strength of the stiffened joist assembly.

Department(s)

Civil, Architectural and Environmental Engineering

Research Center/Lab(s)

Wei-Wen Yu Center for Cold-Formed Steel Structures

Meeting Name

16th International Specialty Conference on Cold-Formed Steel Structures

Publisher

University of Missouri--Rolla

Publication Date

10-17-2002

Document Version

Final Version

Rights

© 2002 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

Share

 
COinS
 
Oct 17th, 12:00 AM

Application of a Finite Element Model to a Cold-formed Steel C-section with a Bearing Stiffener

Described in this paper is the application of a finite element model to a cold-formed steel C-section with a bearing stiffener installed between its flanges. This model has been used to determine both the web crippling capacity of the joist, and the forces that develop in the fasteners connecting the bearing stiffener to the joist. The finite element model was also used to carry out parametric studies of the stiffened joist assembly to determine the impact on the web crippling capacity and the fastener forces caused by variations in the assembly. Based on the results of these finite element studies, combined with available experimental work, a design expression has been proposed that can calculate the web crippling capacity of a cold formed steel C-section joist that has a bearing stiffener installed between the joist flanges. A second design expression has been proposed for predicting the forces in the fasteners that connect the joist to the stiffener. Predictions of both the web crippling capacity and the fastener forces are necessary for determining the ultimate strength of the stiffened joist assembly.