Session Dates
03 Nov 2010
Abstract
This paper describes the development of innovative seismic technologies for cold-formed steel structures; a rocking steel shear wall system with replaceable energy dissipating steel fuses for low rise housing units. In this system, the fuses are placed at the base of a folded-steel sheet wall connecting an anchor bolt and the steel sheet wall. It is designed so that most of the earthquake energy can be dissipated by plastic deformation of the fuse elements, while the shear wall remains intact and resists vertical and horizontal forces caused by large earthquakes. As expected in seismic events, the fuses at the base move cyclically into plastic regions when the wall behaves in a rocking manner. As a result, the wall system is expected to show a stable energy absorption behavior. To maximize its energy absorption capability in this research, the shape of the fuse is optimized, such that a butterfly shape is employed to have a greater yielding region. To verify the seismic performance of the proposed system, static shear wall tests and earthquake response analyses were respectively conducted. It was confirmed, with both results, that the developed fuses have high energy absorbing capacity and the rocking shear wall systems using them also have high seismic performance in comparison with conventional shear wall systems. The proposed system contributes to increased sustainability of the building systems through which damaged fuses are replaced after strong earthquakes.
Department(s)
Civil, Architectural and Environmental Engineering
Research Center/Lab(s)
Wei-Wen Yu Center for Cold-Formed Steel Structures
Meeting Name
20th International Specialty Conference on Cold-Formed Steel Structures
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2010 Missouri University of Science and Technology, All rights reserved.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Ozaki, Fuminobu; Kawai, Yoshimichi; Tanaka, Hiroshi; Okada, Tadayoshi; and Kanno, Ryoichi, "Innovative Damage Control Systems Using Replaceable Energy Dissipating Steel Fuses for Cold-formed Steel Structures" (2010). CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018). 2.
https://scholarsmine.mst.edu/isccss/20iccfss/20iccfss-session9/2
Innovative Damage Control Systems Using Replaceable Energy Dissipating Steel Fuses for Cold-formed Steel Structures
This paper describes the development of innovative seismic technologies for cold-formed steel structures; a rocking steel shear wall system with replaceable energy dissipating steel fuses for low rise housing units. In this system, the fuses are placed at the base of a folded-steel sheet wall connecting an anchor bolt and the steel sheet wall. It is designed so that most of the earthquake energy can be dissipated by plastic deformation of the fuse elements, while the shear wall remains intact and resists vertical and horizontal forces caused by large earthquakes. As expected in seismic events, the fuses at the base move cyclically into plastic regions when the wall behaves in a rocking manner. As a result, the wall system is expected to show a stable energy absorption behavior. To maximize its energy absorption capability in this research, the shape of the fuse is optimized, such that a butterfly shape is employed to have a greater yielding region. To verify the seismic performance of the proposed system, static shear wall tests and earthquake response analyses were respectively conducted. It was confirmed, with both results, that the developed fuses have high energy absorbing capacity and the rocking shear wall systems using them also have high seismic performance in comparison with conventional shear wall systems. The proposed system contributes to increased sustainability of the building systems through which damaged fuses are replaced after strong earthquakes.
