Session Dates
06 Nov 2014
Abstract
Composite action in systems consisting of steel and concrete depends on an effective shear-transfer mechanism between the two materials. Such mechanism for smooth steel surfaces inside concrete will be limited to the bond-slip behavior at the steel/concrete interfaces. This research investigates the bond-slip behavior of galvanized cold-formed (light gauge) steel profiles embedded in concrete. A new innovative pull-out test is presented and global bond-slip curves for different values of concrete strength are obtained from such tests. Next, through an innovative procedure, mathematical equations and a few points from the experimental global bond-slip curves are used to develop a bi-linear local bond-slip model which represents the local bond-slip behavior. Then by curve fitting, empirical equations are proposed to determine the suggested model’s parameters based on concrete compressive strength. Finally, validity of the proposed model is explored by two methods: 1) by comparing its resulting global bond-slip graphs from analytical equations with test results. 2) by comparing its resulting global bond-slip graphs from finite element modeling with test results.
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
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
Recommended Citation
Majdi, Yazdan; Hsu, Cheng-Tzu Thomas; and Punurai, Sun, "Bond-Slip Characteristics between Cold-Formed Metal and Concrete" (2014). CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018). 1.
https://scholarsmine.mst.edu/isccss/22iccfss/session06/1
Bond-Slip Characteristics between Cold-Formed Metal and Concrete
Composite action in systems consisting of steel and concrete depends on an effective shear-transfer mechanism between the two materials. Such mechanism for smooth steel surfaces inside concrete will be limited to the bond-slip behavior at the steel/concrete interfaces. This research investigates the bond-slip behavior of galvanized cold-formed (light gauge) steel profiles embedded in concrete. A new innovative pull-out test is presented and global bond-slip curves for different values of concrete strength are obtained from such tests. Next, through an innovative procedure, mathematical equations and a few points from the experimental global bond-slip curves are used to develop a bi-linear local bond-slip model which represents the local bond-slip behavior. Then by curve fitting, empirical equations are proposed to determine the suggested model’s parameters based on concrete compressive strength. Finally, validity of the proposed model is explored by two methods: 1) by comparing its resulting global bond-slip graphs from analytical equations with test results. 2) by comparing its resulting global bond-slip graphs from finite element modeling with test results.
