Abstract
This paper discusses a novel cold-formed U-shaped steel and concrete composite beam (RCUCB) for which a reinforcement truss is furnished to stiffen the open steel U-section. Inverted U-shaped reinforcements are assembled to enhance the interface between a concrete flange and a beam web, which includes the bottom reinforcement, concrete fill, and steel U-section. A longitudinal bottom reinforcement is installed to control the slip between the concrete web and the steel U-section. Ten specimens were tested under bending moment, and all exhibit a typical flexural failure. Significant integrity for the RCUCB can be achieved through the enhancement of the reinforcement truss and inverted U-shaped reinforcement. A modified method for determining the shear connection degree of the RCUCB is proposed, which considers the contributions from the inverted U-shaped reinforcement, neck concrete, and reinforcement truss. Two transformed section methods were adopted to determine the elastic stiffness. In addition, a simplified bending capacity calculation method is presented.
| Original language | English (US) |
|---|---|
| Article number | 04019106 |
| Journal | Journal of Structural Engineering (United States) |
| Volume | 145 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 1 2019 |
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All Science Journal Classification (ASJC) codes
- Civil and Structural Engineering
- Building and Construction
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
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Bending Capacity and Elastic Stiffness for a Novel Configuration of Cold-Formed U-Shaped Steel-and-Concrete Composite Beams. / Liu, Jiepeng; Zhao, Yi; Yang, Yuanlong; Chen, Yohchia F.
In: Journal of Structural Engineering (United States), Vol. 145, No. 10, 04019106, 01.10.2019.Research output: Contribution to journal › Article
TY - JOUR
T1 - Bending Capacity and Elastic Stiffness for a Novel Configuration of Cold-Formed U-Shaped Steel-and-Concrete Composite Beams
AU - Liu, Jiepeng
AU - Zhao, Yi
AU - Yang, Yuanlong
AU - Chen, Yohchia F.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - This paper discusses a novel cold-formed U-shaped steel and concrete composite beam (RCUCB) for which a reinforcement truss is furnished to stiffen the open steel U-section. Inverted U-shaped reinforcements are assembled to enhance the interface between a concrete flange and a beam web, which includes the bottom reinforcement, concrete fill, and steel U-section. A longitudinal bottom reinforcement is installed to control the slip between the concrete web and the steel U-section. Ten specimens were tested under bending moment, and all exhibit a typical flexural failure. Significant integrity for the RCUCB can be achieved through the enhancement of the reinforcement truss and inverted U-shaped reinforcement. A modified method for determining the shear connection degree of the RCUCB is proposed, which considers the contributions from the inverted U-shaped reinforcement, neck concrete, and reinforcement truss. Two transformed section methods were adopted to determine the elastic stiffness. In addition, a simplified bending capacity calculation method is presented.
AB - This paper discusses a novel cold-formed U-shaped steel and concrete composite beam (RCUCB) for which a reinforcement truss is furnished to stiffen the open steel U-section. Inverted U-shaped reinforcements are assembled to enhance the interface between a concrete flange and a beam web, which includes the bottom reinforcement, concrete fill, and steel U-section. A longitudinal bottom reinforcement is installed to control the slip between the concrete web and the steel U-section. Ten specimens were tested under bending moment, and all exhibit a typical flexural failure. Significant integrity for the RCUCB can be achieved through the enhancement of the reinforcement truss and inverted U-shaped reinforcement. A modified method for determining the shear connection degree of the RCUCB is proposed, which considers the contributions from the inverted U-shaped reinforcement, neck concrete, and reinforcement truss. Two transformed section methods were adopted to determine the elastic stiffness. In addition, a simplified bending capacity calculation method is presented.
UR - http://www.scopus.com/inward/record.url?scp=85070420207&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85070420207&partnerID=8YFLogxK
U2 - 10.1061/(ASCE)ST.1943-541X.0002394
DO - 10.1061/(ASCE)ST.1943-541X.0002394
M3 - Article
AN - SCOPUS:85070420207
VL - 145
JO - Journal of Structural Engineering
JF - Journal of Structural Engineering
SN - 0733-9445
IS - 10
M1 - 04019106
ER -