Session Start Date

11-7-2018

Session End Date

11-8-2018

Abstract

The objective of this study is to explore the structural response of cold-formed steel stud assemblies (i.e., stud and track) with partial bearing conditions. It is hypothesized that studs bearing under partial bearing conditions (i.e., not fully bearing on a concrete slab) may result in reduced axial capacities. Currently, the behavior of these systems on concrete slabs due to member instabilities is not well-understood, and cold-formed steel design specifications provide no guidance. This study provides an integral experimental and numerical investigation of the stability response of the studs under partial bearing conditions in order to quantify the reduction of their axial capacities. A variety of partial bearing conditions are considered in this study by parametrically varying edge (i.e., where the steel stud assembly is close to the concrete slab edge) and overhang (i.e., steel stud assembly is outside the edge) distances. The non-uniform bearing stress underneath the stud caused by concrete cracking, crushing, or a combination thereof is measured to relate with the reduction of the axial capacity of the stud. The results of this study will be used to develop design guidelines for stud wall assembly under non-uniform bearing conditions.

Department(s)

Civil, Architectural and Environmental Engineering

Meeting Name

Wei-Wen Yu International Specialty Conference on Cold-Formed Steel Structures 2018

Publisher

Missouri University of Science and Technology

Publication Date

11-7-2018

Document Version

Final Version

Rights

© 2018 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Nov 7th, 12:00 AM Nov 8th, 12:00 AM

The Impact of Bearing Conditions on the Behavior of Cold-Formed Steel Stud Assemblies

The objective of this study is to explore the structural response of cold-formed steel stud assemblies (i.e., stud and track) with partial bearing conditions. It is hypothesized that studs bearing under partial bearing conditions (i.e., not fully bearing on a concrete slab) may result in reduced axial capacities. Currently, the behavior of these systems on concrete slabs due to member instabilities is not well-understood, and cold-formed steel design specifications provide no guidance. This study provides an integral experimental and numerical investigation of the stability response of the studs under partial bearing conditions in order to quantify the reduction of their axial capacities. A variety of partial bearing conditions are considered in this study by parametrically varying edge (i.e., where the steel stud assembly is close to the concrete slab edge) and overhang (i.e., steel stud assembly is outside the edge) distances. The non-uniform bearing stress underneath the stud caused by concrete cracking, crushing, or a combination thereof is measured to relate with the reduction of the axial capacity of the stud. The results of this study will be used to develop design guidelines for stud wall assembly under non-uniform bearing conditions.