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Lateral behaviour of hybrid cold-formed and hot-rolled steel wall systems: Experimental investigation.
- Source :
-
Journal of Constructional Steel Research . Aug2018, Vol. 147, p422-432. 11p. - Publication Year :
- 2018
-
Abstract
- The seismic design of light steel frames (LSF) can not only rely on the application of cold-formed steel (CFS). Some mixed systems and integrated solutions such as hybrid systems can offer new possibilities, in particular with regard to applications in mid-rise construction. A hybrid solution is to replace some CFS chord studs with hot-rolled square hollow section SHS, in order to achieve higher capacity. This paper provides the results of experimental studies on the lateral behaviour of a hybrid light-weight steel panel and investigates the implication of any further system improvements for mid-rise construction. Each hybrid wall panel (HWP) consists of a hot-rolled SHS frame, laterally incorporated in a cold-formed panel. The study includes investigating the lateral performance of HWP, while a CFS top chord acting as a load collector, and a hot-rolled steel frame acting as a lateral load resisting system. The behaviour of specimens is investigated under monotonic and cyclic loads, and the step-by-step enhancement is implemented according to the results. The outcomes revealed that although the hysteretic behaviour of the HWP represents pinching effect, mainly due to poor performance of the cold-formed steel collector, by strengthening the top chord design the behaviour is improved. Relying on the cold-formed part to resist the major portion of gravity loads, while the hot-rolled collector transfers the entire lateral load to the hot-rolled frame, results in significantly improved hysteretic behaviour. [ABSTRACT FROM AUTHOR]
- Subjects :
- *STEEL framing
*HYBRID systems
*STEEL walls
*CYCLIC loads
*LATERAL loads
Subjects
Details
- Language :
- English
- ISSN :
- 0143974X
- Volume :
- 147
- Database :
- Academic Search Index
- Journal :
- Journal of Constructional Steel Research
- Publication Type :
- Academic Journal
- Accession number :
- 130045816
- Full Text :
- https://doi.org/10.1016/j.jcsr.2018.04.035