Stiffness prediction for bolted moment-connections between cold-formed steel members
Data(s) |
01/01/2004
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Resumo |
The authors have recently described a cold-formed steel portal framing system in which simple bolted moment-connections, formed through brackets, were used for the eaves and apex joints. Such connections, however, cannot be considered as rigid because of localised in-plane elongation of the bolt-holes caused by bearing against the bolt-shanks. To therefore predict the initial stiffness of such connections, it is necessary to know the initial bolt-hole elongation stiffness k(b). In this paper, a finite element-solid idealisation of a bolted lap joint in shear will be described that can be used to determine k(b); the results obtained are validated against experimental data. A beam idealisation of a cold-formed steel bolted moment-connection is then described, in which spring elements are used to idealise the rotational flexibility of the bolt-groups resulting from bolt-hole elongation: Using the value of k(b) in the beam idealisation, the deflections predicted are shown to be similar to those measured experimentally in laboratory tests conducted on the apex joint of a cold-formed steel portal frame. (C) 2003 Elsevier Ltd. All rights reserved. |
Identificador | |
Idioma(s) |
eng |
Direitos |
info:eu-repo/semantics/restrictedAccess |
Fonte |
Lim , J & Nethercot , D A 2004 , ' Stiffness prediction for bolted moment-connections between cold-formed steel members ' Journal of Constructional Steel Research , vol 60 , no. 1 , pp. 85-107 . DOI: 10.1016/S0143-974X(03)00105-6 |
Palavras-Chave | #/dk/atira/pure/subjectarea/asjc/2200/2205 #Civil and Structural Engineering #/dk/atira/pure/subjectarea/asjc/2500 #Materials Science(all) |
Tipo |
article |