Generalised component model for structural steel joints

Zhu, Chen; Rasmussen, Kim J.R.; Yan, Shen

doi:10.1016/j.jcsr.2018.10.026

Cited by 26 publications

(18 citation statements)

References 7 publications

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“…4, with the corresponding components being (1) For all components, the initial stiffness and the elastic limit are calculated according to Eurocode 3, and the component plastic stiffness is assumed to be a certain percentage of the component initial stiffness, which depends on the component type [6][7]. For component (2), a post-ultimate softening stiffness of -1% of the component initial stiffness is also introduced, in order to take the post-ultimate ductile behaviour of the component into account. For component (2), a post-ultimate softening stiffness of -1% of the component initial stiffness is also introduced, in order to take the post-ultimate ductile behaviour of the component into account.…”

Section: Validation Of the Generalised Component Methodsmentioning

confidence: 99%

“…The context of establishing the Generalised Component Method [2] is to overcome the limitations of the current Component Method incorporated in Eurocode 3 [1] and other available mechanical spring models in the literature [3][4], as mentioned in the Introduction. In particular, the Generalised Component Method specifies the inelastic and softening (negative) stiffnesses of components, as well as their ultimate capacity and ductility.…”

Section: Generalised Component Methodsmentioning

confidence: 99%

“…By applying the minimum total potential energy principle to a multi-spring system, the momentrotation relationship of the system can be written as [2]: …”

Section: Moment-rotation Relationship Of a Multi-spring Systemmentioning

confidence: 99%

“…The height and the displacement of the ICR can be derived as [2]: The loading condition of a spring series on a rotating section can be determined by its relative position to this point.…”

Section: Instantaneous Centre Of Rotationmentioning

confidence: 99%

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Recent developments of the Component Method

et al. 2019

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The Component Method is well established and incorporated in Part 1.8 of Eurocode3 for the design of connections of steel frameworks. It is primarily intended to provide the elastic joint stiffness, although Part 1.8 includes provisions for also determining the inelastic moment-rotation response from the elastic limit to the ultimate moment. The latter provisions are empirical and use an established experimentally-based nonlinear equation to define the inelastic response. The Component Method has been further developed in recent years to determine the inelastic response using bi-linear springs with elastic and inelastic ranges. Procedures have also been developed at the University of Sydney to extend the Method into the post-ultimate range by defining tri-linear springs with elastic, inelastic and softening ranges. As well, recent research at the University of Sydney has produced a simple way to predict the moment-rotation response under fracture of components, thus enabling the Method to capture the full moment-rotation behaviour. The ability of the Method to predict full-range moment-rotation behaviour is especially useful for design by advanced analysis and progressive collapse analysis, as it allows both members and connections to be checked for stiffness and strength as part of the analysis. In parallel, an ongoing joint project between Sydney University and Tongji University on the strength of beam-to-upright connections in rack structures has extended to Component Method to cold-formed steel connections which include tang-connectors and bolts. The paper provides an overview of these recent developments of the Component Method, including the opportunity to incorporate the Method in a fully nonlinear procedure for the direct design of steel frameworks including connections by advanced analysis, also referred to as the Direct Design Method.

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Section: Validation Of the Generalised Component Methodsmentioning

confidence: 99%

Section: Generalised Component Methodsmentioning

confidence: 99%

“…By applying the minimum total potential energy principle to a multi-spring system, the momentrotation relationship of the system can be written as [2]: …”

Section: Moment-rotation Relationship Of a Multi-spring Systemmentioning

confidence: 99%

“…The height and the displacement of the ICR can be derived as [2]: The loading condition of a spring series on a rotating section can be determined by its relative position to this point.…”

Section: Instantaneous Centre Of Rotationmentioning

confidence: 99%

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Recent developments of the Component Method

et al. 2019

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“…Therefore, research programs were undertaken recently at the University of Sydney aiming at determining the full-range behaviour of various types of steel beam-to-column joints [17][18][19][20]. This paper summaries the experimental studies.…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of the Full-Range Behaviour of Steel Beam-to-Column Connections

Yan¹,

Rasmussen²,

Jiang³

et al. 2020

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The paper summarises recent experimental research undertaken at the University of Sydney on determining the full-range behaviour of steel beam-to-column connections. Three series of tests were conducted on three different types of connections including bolted extended end-plate connections, top-and-seat angle connections and double web angle connections. The tests were continued well into the post-ultimate range until complete failure of the connection, obtaining the connection's full-range behaviour comprising the initial linear response, non-linear behaviour resulting from gradual yielding of connection components, ultimate state, and post-ultimate softening and fracture behaviour. The failure modes were observed and analysed for the tested connection types. Moreover, for the top-and-seat angle connections and double web angle connections, multiple tests were conducted on nominally identical connections to examine the variability of the connection behaviour, which stems from the random variation in geometric and material properties.

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The GCM‐FE Method for the Advanced Analysis of Steel Frameworks and Connections

2022

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This paper summarises a finite-element analysis framework that directly allows for the full-range behaviour of steel beam-to-column joints in the analysis of steel frames, by incorporating Generalised Component Method-based joint models in the numerical model. All components in each connection are explicitly modelled in the analysis and are assigned with full-range constitutive models. This new analysis methodology is termed the Generalised Component

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Generalised component model for structural steel joints

Cited by 26 publications

References 7 publications

Recent developments of the Component Method

Recent developments of the Component Method

Experimental Evaluation of the Full-Range Behaviour of Steel Beam-to-Column Connections

The GCM‐FE Method for the Advanced Analysis of Steel Frameworks and Connections

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