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- Feldmann, M., et al.
(author)
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Economic and durable design of composite bridges with integral abutments
- 2010
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Reports (peer-reviewed)abstract
- In the design and construction of bridges, questions of sustainability, maintenance and durability are becoming more and more important for European road administrations, in addition to safety and serviceability issues. Therefore integral abutment bridges are becoming highly attractive to designers, constructors and road administrations, as they tend to be less expensive to build, easier to maintain and more economical to own over their life time. Bearings and joints are main sources of maintenance costs during a lifetime. These costs vanish because the bridges are joint- and bearing-free. However, this very advantage complicates the design compared to conventional bridges in some crucial respects. Combined with the fact that most European countries have only limited experience with integral bridges to date, this leads to a reluctance of road administrations to use this bridge type. Thus the main objective of the project is to experimentally and theoretically investigate the behaviour of critical points of integral abutment bridges. Regarding the soil-structure interaction, recommendations are elaborated based on monitoring results as well as previous research and monitoring campaigns. Conventional HP piles and sheet piles are investigated as a foundation. Furthermore a hinged HP connection is developed to decrease the stresses in the pile system. An investigation of the design and construction of the slab to pavement approach is also carried out to avoid major damages to the structure. Finally the most important information is condensed into the essential features in form of a 'Design guide for composite bridges with integral abutments'
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- Anveskog, L., et al.
(author)
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Development of Activities - Standard Application Packages according SIV to help you make better use of standard application packages in your organization : Verksamhetsutveckling - Standardsystem enligt SIV för att du skall kunna utnyttja standardsystem bättre i din verksamhet
- 1986
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Reports (other academic/artistic)abstract
- The report is published in an English and Swedish version.Rapporten finns utgiven på svenska och engelska. ------------------------------------------------There is a need for a systematic way of working when planning for standard application packages in organizations. We have tried to develop a method for this field - the SIV method (Standard Application Packages in Organizations, in Swedish: Standardsystem I Verksamheter). The SIV method takes the customer's situation as a starting point - a customer view. Furthermore, occasions have been described where a dialogue between the customer and the vendor is necessary, e.g. demonstrations and negotiations. The SIV method gives a survey of the field with emphasis on adaptation of activities and standard application packages to each other.This report is focusing on "adaptation" of standard application packages. A similar report has been done for "choice" of standard application packages.------------------------------------------------ Det finns behov av ett systematiskt arbetssätt vid planering av standardsystem för verksamheter. Vi har försökt utveckla en metodik för detta område - SIV (Standardsystem I Verksamheter). SIV-metodiken tar utgångspunkt i kundens situation - ett kundperspektiv.Vidare anges tillfällen när det behövs en dialog mellan kund och leverantör, t.ex. demonstrationer och förhandlingar. SIV-metodiken ger en översikt av området med betoning på anpassning av verksamhet och standardystem mot varandra.Denna rapport behandlar "anapssning" av standardsystem. En liknande rapport har tagits fram för "val" av standardystem.------------------------------------------------
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- Björgvinsson, Erling, et al.
(author)
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Prototyping Futures
- 2012
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Reports (other academic/artistic)abstract
- Prototyping Futures gives you a glimpse of what collaborating with academia might look like. Medea and its co-partners share their stories about activities happening at the research centre – projects, methods, tools, and approaches – what challenges lie ahead, and how these can be tackled. Examples of highlighted topics include: What is a living lab and how does it work? What are the visions behind the Connectivity Lab at Medea? And, how can prototyping-methods be used when sketching scenarios for sustainable futures? Other topics are: What is the role of the body when designing technology? What is collaborative media and how can this concept help us understand contemporary media practices? Prototyping Futures also discusses the open-hardware platform Arduino, and the concepts of open data and the Internet of Things, raising questions on how digital media and connected devices can contribute to more sustainable lifestyles, and a better world.
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- Frederiksen, Jens M., et al.
(author)
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Fick's 2nd law - Complete solutions for chloride ingress into concrete – with focus on time dependent diffusivity and boundary condition
- 2009
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Reports (other academic/artistic)abstract
- This report focuses on models of chloride ingress into concrete that are based on mathematical solutions of Fick's second law. In recent years a lot of confusion has been identified concerning these models. In some cases time-dependencies of diffusivity have been used in a mathematically incorrect way. In other cases field and laboratory data from one way of describing the time-dependency of these diffusivities has been used in models that are based on another model. This is now clarified in this report. Some of the clarifications are completely new, concerning the relationship between the age exponents in the time-dependency of the "instantaneous" and the "achieved" diffusivity.
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