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This paper aims to propose a methodology to remove inherent implicit creep from the Eurocode 3 material model for steel and to present a creep-free analysis on simply supported steel members.

Most of the available material models of steel are based on transient coupon tests, which inherently include creep strain associated with particular heating rates and load ratios.

The creep-free analysis aims to reveal the influence of implicit creep by investigating the behaviour of simply supported steel beams and columns exposed to various heating regimes. The paper further evaluates the implicit consideration of creep in the Eurocode 3 steel material model.

A modified Eurocode 3 carbon steel material model for creep-free analysis is proposed for general structural fire engineering analysis.

In structural fire engineering, the importance of bolt assemblies is often overlooked. Connection design uses the temperature-dependent bolt strength-reduction factors prescribed in Eurocode 3, despite the existence of two distinct failure modes under tension; necking of the bolt shank, and thread-stripping. While literature exists to predict failure modes at ambient temperature, there is no method for failure mode prediction for elevated temperatures where ductility is critical to avoid collapse. Galvanised M20 structural bolt assemblies and bolt material from a single batch have been tested under tension at a range of temperatures and strain-rates typical of those experienced in fire. Turned-down bolt test data produced stress-strain curves characteristic of different microstructures at ambient temperature, despite a tempered-martensitic microstructure being specified in the standards. The failure modes of bolt assemblies were found to be dependent on the as-received microstructure at ambient temperature. At elevated temperatures, however, only thread-stripping was observed.

In order to improve the robustness of bare-steel and composite structures in fire, a novel axially and rotationally ductile connection has been proposed in this paper.

The component-based models of the bare-steel ductile connection and composite ductile connection have been proposed and incorporated into the software Vulcan to facilitate global frame analysis for performance-based structural fire engineering design. These component-based models are validated against detailed Abaqus FE models and experiments. A series of 2-D bare-steel frame models and 3-D composite frame models with ductile connections, idealised rigid and pinned connections, have been created using Vulcan to compare the fire performance of ductile connection with other connection types in bare-steel and composite structures.

The comparison results show that the proposed ductile connection can provide excellent ductility to accommodate the axial deformation of connected beam under fire conditions, thus reducing the axial forces generated in the connection and potentially preventing the premature brittle failure of the connection.

Compared with conventional connection types, the proposed ductile connection exhibits considerable deformability, and can potentially enhance the robustness of structures in fire.

The purpose of this study was to explore the views of autistic people, carers and practitioners regarding the barriers autistic employees face at work (Study 1) and to use these views to inform the design of an employment programme for autistic employees without learning disabilities (Study 2).

In Study 1, 16 (20%) carers, 17 (21%) practitioners and 47 (59%) autistic adults who had been or were currently employed, answered a survey regarding barriers at work. Study 2 evaluates the efficacy of a set of profiling assessment tools (PA) developed to help employers make individually-tailored adjustments for their autistic employees by delivering an employment programme consisting of 15, 8-week work placements.

In Study 1, only 25% of autistic adults reported having had adjustments in the workplace and all groups reported this as the main barrier – alongside employers’ lack of understanding. Two sets of results demonstrate the efficacy of the PA tools in addressing this barrier. First, a comparative cost simulation revealed a cost-saving in terms of on-job support of £6.67 per participant per hour worked relative to published data from another programme. Second, 83% of autistic employees reported having had the right adjustments at work.

This is an exploratory study that did not include a comparison group. Hence, it was not possible to evaluate the efficacy of the PA tools relative to a standard employment programme intervention, nor to assess cost reduction, which currently is only estimated from already available published data.

Overall the findings from these studies demonstrate that the time invested in the high-quality assessment of the profile of autistic employees results in saving costs over time and better outcomes.

The originality of the Autism Centre for Employment programme resides in that, unlike other programmes, it shifts the focus from helping autistic employees to helping their employers.

This paper reports on the development of a general-purpose Eurocode-compliant component-based connection finite element for steel-to-steel joints in fire. The development begins by utilising the temperature-dependent connection component characteristics previously developed at the University of Sheffield to create a component-based connection finite element to model flush endplate connections. Subsequently the element was extended to a new connection type with high ductility, the reverse channel. The component models have been developed for the reverse channel under tension and compression. The element has been incorporated into the nonlinear global structural analysis program Vulcan, in which it has been used along with a static-dynamic formulation. The use of the element is illustrated by modelling a fire test at the University of Manchester in which reverse channel connections were used.

Looks at the 2000 Employment Research Unit Annual Conference held at the University of Cardiff in Wales on 6/7 September 2000. Spotlights the 76 or so presentations within and shows that these are in many, differing, areas across management research from: retail finance; precarious jobs and decisions; methodological lessons from feminism; call centre experience and disability discrimination. These and all points east and west are covered and laid out in a simple, abstract style, including, where applicable, references, endnotes and bibliography in an easy‐to‐follow manner. Summarizes each paper and also gives conclusions where needed, in a comfortable modern format.

A component-based model for fin-plate connections has been developed to study the robustness of simple beam-to-column connections at elevated temperatures. The key aspect of this component method is the characterisation of the force-displacement properties of each active component at any temperature, represented by a non-linear "spring". The prescribed temperature-dependent characteristics of any given bolt row are governed by the failure mechanism of the weakest component, based on experimental and analytical findings. A major additional complication involves force reversal in components, which may occur because of temperature change, without any physical reversal of displacement. The Masing Rule has been adapted to incorporate this effect for particular force directions. To account for the bolt slip phases, force transitions between tension and compression take place only when positive contact between a bolt and the edge of its bolt hole is re-established. The results of high-temperature tests on connections have been used to substantiate the developed component model. The component-based connection model has also been used to study joint behaviour in structural sub-frame analyses. This approach will enable more valid performance-based assessment of the overall responses of connections, including their robustness, in design fire scenarios.

BY February most of the parties, which are a gracious feature of modern libraries, are over. They arise from Staff Guilds, which now in most libraries associate the workers, and some of them are on a large scale. We have been represented at only a few of these but there seems to be a great fund of friendliness upon which the modern librarian can draw nowadays. An interesting one was that of the National Central Library Staff which, by a neighbourly arrangement, was held at Chaucer House. A reunion has been held of old and new members of the Croydon Staff Guild and no doubt there were many others. One New Year party was a small but notable dinner at Charing Cross Hotel where the 100th issue of The Library Review was toasted eloquently by the President of the Library Association and amongst the guests were Mr. C. O. G. Douie who was secretary of the Kenyon Committee of the 1927 Library Report and well‐known librarians and journalists. To us it was notable for the assertion by Mr. R. D. Macleod that amongst the young writers were too many who wrote glibly but without that research which good professional writing demanded; but he was sure that where intelligent industry was shown any article resulting would find a place in library journals.

A static/dynamic version of the software Vulcan has recently been developed, in which the numerical singularity of a static analysis, induced by a local instability of a structure, for instance the buckling of a column, can be covered by switching to the explicit dynamic procedure. This version of Vulcan allows the post-buckling behaviour of a member to be traced, finding a re-stabilized state if it exists.

In this paper a study of the behaviour of steel columns in localised fires is presented. A simplified model is developed, taking into consideration the axial restraint of the column in fire. An axial elastic stiffness is used to represent restraint from the superstructure, and the full post-buckling behaviour is covered. Results obtained from the simplified model have been validated against previous numerical studies. A full-frame model has been created for comparison. The simplified model has been extended to investigate the effect of beam yielding on the column's restraint conditions. This is modelled by giving a bilinear force-displacement relationship to the spring element. The influence of the stiffness and strength ratios of beam to column on the behaviour of the column in a localised fire are investigated. This study indicates that, although the member interaction is complex in a frame in a localised fire, it may be possible to find a simple way to deal with this behaviour, and to determine not only the initial buckling temperature but also the possibilities of re-stabilization and progressive collapse.

Actual developments in numerical simulations of the structural behaviour in fire situation are focussed on taking into consideration the interaction of all structural members in a global numerical approach. Therefore it is necessary to model the load bearing behaviour of connections in detail. In this paper a detailed 3D numerical model of a bolted steel endplate connection taking into account nonlinearities, e.g. temperature dependent material, is presented. The simulation is validated by experimental tests conducted at the University of Sheffield in 2008. During some of the experimental tests, large deformations and fractures occurred. These phenomena are simulated with the numerical model as well.