Behavior of Concrete/Cold Formed Steel Composite Beams = Experimental Development of a Novel Structural System

다국어 초록 (Multilingual Abstract)

The use of light-gauge steel framing in low-rise commercial and industrial building construction has experienced a significant increase in recent years. In such construction, the wall framing is an assembly of cold-formed steel (CFS) studs held between top and bottom CFS tracks. Current construction methods utilize heavy hot-rolled steel sections, such as steel angles or hollow structural section tubes, to transfer the load from the end seats of the floor joist and/or from the load-bearing wall studs of the stories above to the supporting load-bearing wall below. The use of hot rolled steel elements results in significant increase in construction cost and time. Such heavy steel elements would be unnecessary if the concrete slab thickening on top of the CFS wall can be made to act compositely with the CFS track. Composite action can be achieved by attaching stand-off screws to the track and encapsulating the screw shank in the deck concrete. A series of experimental studies were performed on full-scale test specimens representing concrete/CFS flexural elements under gravity loads. The studies were designed to investigate the structural performance of concrete/CFS simple beams and concrete/CFS continuous headers. The results indicate that concrete/CFS composite flexural elements are feasible and their structural behavior can be modeled with reasonable accuracy.

목차 (Table of Contents)

• Abstract
• 1. Introduction
• 2. Concrete/CFS Composite Simple Beams
• 3. Concrete/CFS Composite ContinuousHeaders
• 4. Summary and Conclusions
• References

참고문헌 (Reference)

1 Imbsen Software Systems, "XTRACT Version 2. 6. 2"

2 Bahmani, P., "Structural performance of concrete/coldformed steel composite beams supporting composite floor decks" South Dakota State University 2010

3 American Institute of Steel Construction, "Steel construction manual"

4 Steel Stud Manufactures Association, "Product technical guide"

5 American Iron and Steel Institute, "North American Specification for the Design of Cold-Formed Steel Structural Members"

6 International Code Council, "International building code" Country Club Hills 2012

7 Wehbe, A. P., "Experimental evaluation of simple span cold-formed steel and concrete composite beams UTILIZING Shearflex Connectors" South Dakota State University 2009

8 American Concrete Institute, "Building Code Requirements for Structural Concrete(ACI 318–08)and Commentary" Farmington Hills 2011