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A Study on the Structural Performance of Hybrid Studs Subjected to Compression and Torsion  

Jung, Yun Jin (태조엔지니어링 구조사업본부)
Kwon, Young Bong (영남대학교 건설환경공학부)
Kwak, Myong Keun (한국건설기술연구원)
Bae, Kyu Woong (한국건설기술연구원)
Publication Information
Journal of Korean Society of Steel Construction / v.18, no.5, 2006 , pp. 543-551 More about this Journal
Abstract
Cold-formed steel studs that are being used as load-bearing members of wall panels for steel houses have a problem with their insulation due to the heat bridging of their web. Some additional thermal insulating materials should be used. To solve this problem, the new-concept hybrid stud, which consists of a galvanized steel sheet (t = 1.0 m - 12.0 m) and a GFRP panel (t = 4.0-6.0 mm), has recently been developed. An investigation on the structural behavior and the strength capacity of this new hybrid stud has been conducted so that it can be used in load-bearing wall panels of residential buildings. This paper describes the axial compression-torsion test results of the hybrid studs under both axial compression and torsion using ATTM. The main factors of the test were the stud length, the magnitude of the initial compressive force, and the loading method of the monotonic or cyclic loading. The torsion was applied increasingly while the initial compression was kept constant to the failure of the hybrid section. The advanced analysis results obtained form the finite element procedure that considered the material properties of the high-strength galvanized steel and the GFRP were compared with the test results for verification.
Keywords
hybrid studs; galvanized steel plates; GFRP panel; structural performance; compression-torsion tests;
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