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Experimental investigation of roll-formed aluminium lipped channel beams subjected to combined bending and web crippling
https://orcid.org/0000-0003-1733-742X
Abstract Aluminium lipped channel (ALC) beams in the construction industry are becoming more popular due to their unique mechanical characteristics of durability and high strength-to-weight ratio. However, the elastic modulus of aluminium is only one third that of steel. Hence the ALC beams can buckle easily under shear, web crippling and bending actions. In the past, the structural behaviour of ALC beams under shear, web crippling and bending actions was investigated in isolation. For practical applications, however, the structural behaviour of ALC beams under combined actions should be investigated so that rational design rules can be developed. Recently, a research study was conducted at Griffith University to investigate the structural behaviour and design of ALC beams subjected to combined bending and shear actions. In the current study, an experimental program was conducted focussing on the structural behaviour and design of ALC beams subjected to combined bending and web crippling actions. Specifically, a series of tests was performed at Griffith University using ALC beams to investigate the behaviour and strengths of such sections subjected to combined bending and web crippling under unfastened interior one flange (IOF) loading conditions. Different interaction factors were selected to study the interaction levels of the bending moment and web crippling strengths of ALC beams. The length of ALC specimens in combined actions is non-dimensionalised based on the ultimate capacities of such beams subjected to pure bending and pure web crippling. The results from the combined bending and web crippling tests were then compared with the current design rules of AS/NZS 4600, AISI S100, and Eurocode 3 Part 1.3 based on the linear interaction equations, to verify their accuracy in predicting the capacities of ALC beams under combined bending and web crippling actions.
Highlights Experimentally investigated the strength and behaviour of roll-formed ALC beams under combined bending and web crippling actions. ALC sections with different web slenderness, bearing lengths, and interaction factors were considered. It was found that there are no aluminium design rules to predict the strengths of roll-formed ALC beams under combined actions. Hence the test results were compared with the current Australian, American and European cold-formed steel design rules to verify their accuracy in predicting the strengths. The design rules in Eurocode 3 Part 1.3 were found to be conservatively predicting the strengths of ALC beams subjected to combined actions.
Experimental investigation of roll-formed aluminium lipped channel beams subjected to combined bending and web crippling
https://orcid.org/0000-0003-1733-742X
Abstract Aluminium lipped channel (ALC) beams in the construction industry are becoming more popular due to their unique mechanical characteristics of durability and high strength-to-weight ratio. However, the elastic modulus of aluminium is only one third that of steel. Hence the ALC beams can buckle easily under shear, web crippling and bending actions. In the past, the structural behaviour of ALC beams under shear, web crippling and bending actions was investigated in isolation. For practical applications, however, the structural behaviour of ALC beams under combined actions should be investigated so that rational design rules can be developed. Recently, a research study was conducted at Griffith University to investigate the structural behaviour and design of ALC beams subjected to combined bending and shear actions. In the current study, an experimental program was conducted focussing on the structural behaviour and design of ALC beams subjected to combined bending and web crippling actions. Specifically, a series of tests was performed at Griffith University using ALC beams to investigate the behaviour and strengths of such sections subjected to combined bending and web crippling under unfastened interior one flange (IOF) loading conditions. Different interaction factors were selected to study the interaction levels of the bending moment and web crippling strengths of ALC beams. The length of ALC specimens in combined actions is non-dimensionalised based on the ultimate capacities of such beams subjected to pure bending and pure web crippling. The results from the combined bending and web crippling tests were then compared with the current design rules of AS/NZS 4600, AISI S100, and Eurocode 3 Part 1.3 based on the linear interaction equations, to verify their accuracy in predicting the capacities of ALC beams under combined bending and web crippling actions.
Highlights Experimentally investigated the strength and behaviour of roll-formed ALC beams under combined bending and web crippling actions. ALC sections with different web slenderness, bearing lengths, and interaction factors were considered. It was found that there are no aluminium design rules to predict the strengths of roll-formed ALC beams under combined actions. Hence the test results were compared with the current Australian, American and European cold-formed steel design rules to verify their accuracy in predicting the strengths. The design rules in Eurocode 3 Part 1.3 were found to be conservatively predicting the strengths of ALC beams subjected to combined actions.
Experimental investigation of roll-formed aluminium lipped channel beams subjected to combined bending and web crippling
https://orcid.org/0000-0003-1733-742X
Abstract Aluminium lipped channel (ALC) beams in the construction industry are becoming more popular due to their unique mechanical characteristics of durability and high strength-to-weight ratio. However, the elastic modulus of aluminium is only one third that of steel. Hence the ALC beams can buckle easily under shear, web crippling and bending actions. In the past, the structural behaviour of ALC beams under shear, web crippling and bending actions was investigated in isolation. For practical applications, however, the structural behaviour of ALC beams under combined actions should be investigated so that rational design rules can be developed. Recently, a research study was conducted at Griffith University to investigate the structural behaviour and design of ALC beams subjected to combined bending and shear actions. In the current study, an experimental program was conducted focussing on the structural behaviour and design of ALC beams subjected to combined bending and web crippling actions. Specifically, a series of tests was performed at Griffith University using ALC beams to investigate the behaviour and strengths of such sections subjected to combined bending and web crippling under unfastened interior one flange (IOF) loading conditions. Different interaction factors were selected to study the interaction levels of the bending moment and web crippling strengths of ALC beams. The length of ALC specimens in combined actions is non-dimensionalised based on the ultimate capacities of such beams subjected to pure bending and pure web crippling. The results from the combined bending and web crippling tests were then compared with the current design rules of AS/NZS 4600, AISI S100, and Eurocode 3 Part 1.3 based on the linear interaction equations, to verify their accuracy in predicting the capacities of ALC beams under combined bending and web crippling actions.
Highlights Experimentally investigated the strength and behaviour of roll-formed ALC beams under combined bending and web crippling actions. ALC sections with different web slenderness, bearing lengths, and interaction factors were considered. It was found that there are no aluminium design rules to predict the strengths of roll-formed ALC beams under combined actions. Hence the test results were compared with the current Australian, American and European cold-formed steel design rules to verify their accuracy in predicting the strengths. The design rules in Eurocode 3 Part 1.3 were found to be conservatively predicting the strengths of ALC beams subjected to combined actions.
Experimental investigation of roll-formed aluminium lipped channel beams subjected to combined bending and web crippling
Nguyen, Anh-Vy (Autor:in) / Gunalan, Shanmuganathan (Autor:in) / Keerthan, Poologanathan (Autor:in) / Guan, Hong (Autor:in) / Aghdamy, Sanam (Autor:in)
Thin-Walled Structures ; 171
06.12.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Web crippling behaviour of thin-walled lipped channel beams
| Elsevier | 2010
Web crippling behaviour of thin-walled lipped channel beams
| Online Contents | 2011