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Development and adaptation of a life cycle management system for constructed work
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
2005 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

Lifetime Engineering (or Life Cycle Engineering) is a technical approach for meeting the current objective of sustainable development. The approach is aimed to turn today’s reactive and short-term design, management and maintenance planning towards an optimised and long-term technical approach. The life cycle based management and maintenance planning approach includes condition assessment, predictive modelling of performance changes, maintenance, repair and refurbishment planning and decisions. The Life Cycle Management System (LMS) is a predictive and generic life cycle based management system aimed to support all types of decision making and planning of optimal maintenance, repair and refurbishment activities of any constructed works. The system takes into account a number of aspects in sustainable and conscious development such as human requirements, life cycle economy, life cycle ecology and cultural requirements. The LMS is a system by which the complete system or parts thereof, works in co-operation or as a complement to existing business support systems. The system is module based where each module represents a subprocess within the maintenance management process. The scope of this thesis is focused on development and adaptation of the predictive characteristic of LMS towards a presumptive user. The objective is to develop and adapt a Service Life Performance Analysis module applicable for condition based Facility Management System in general and for condition based Bridge Management System in particular. Emphasis is placed on development and adaptation of a conditional probability based Service Life Performance Analysis model in which degradation models and Markov chains play a decisive role. The thesis deals also with development and adaptation of environmental exposure data recording and processing, with special emphasis on quantitative environmental classification in order to provide a simplified method of Service Life Performance Analysis.

Place, publisher, year, edition, pages
Stockholm: KTH , 2005. , vii, 36 p.
Keyword [en]
life cycle management system, maintenance, predictability, service life performance analysis
National Category
Building Technologies
Identifiers
URN: urn:nbn:se:kth:diva-522ISBN: 91-7178-161-7 (print)OAI: oai:DiVA.org:kth-522DiVA: diva2:14283
Presentation
2005-10-28, Hörsalen ITB-Brynäs, S. Sjötullsgatan 3, Gävle, 10:00
Opponent
Supervisors
Note
QC 20101130Available from: 2005-11-29 Created: 2005-11-29 Last updated: 2010-11-30Bibliographically approved
List of papers
1. Life cycle management of built environment: an ICT based concept and some cases
Open this publication in new window or tab >>Life cycle management of built environment: an ICT based concept and some cases
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2004 (English)In: Proceedings from the CIB World Building CongressArticle in journal (Refereed) Published
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-8824 (URN)
Note
QC 20100716Available from: 2005-11-29 Created: 2005-11-29 Last updated: 2012-03-23Bibliographically approved
2. Quantification of exposure classes in the European Standard EN 206-1
Open this publication in new window or tab >>Quantification of exposure classes in the European Standard EN 206-1
2005 (English)In: Conference on Durability of Building Materials and Components, CSTB, Lyon, 17–20 April 2005, 2005Conference paper, Published paper (Refereed)
Abstract [en]

The recently completed EU-project Life Cycle Management of Concrete Infrastructure for ImprovedSustainability (Lifecon) has developed a generic and predictive Life Cycle Management System(LMS) for maintenance optimisation and planning of buildings. The system facilitates the change oftoday’s reactive practice of maintenance management into a predictive life cycle based maintenancemanagement system. To enable simplified prediction of service life and maintenance interval in such apredictive life cycle management system, a quantitative classification system for environmentalloading is needed. At present there are a number of standards containing quantitative classification ofenvironmental loading onto structures and building materials, e.g. ISO 15686-4, EOTA and ISO 9223.The governing standard for concrete structures such as bridges and tunnels is the European StandardEN 206-1 Concrete – part 1: Specification, performance, production and conformity. This standarddivides the environmental loading into 18 exposure classes, which cover environmental loads fromatmosphere, seawater, fresh water, groundwater and soil, but also the decisive parameters for moistureand chlorides. Almost all exposure classes within the standard include only qualitative descriptions.To make the standard EN 206-1 valid for LMS the standard has to be further developed into aquantitative classification system for environmental loading. A proposal of a quantitative classificationof the exposure classes within the standard EN 206-1 regarding corrosion induced by carbonation ispresented in this paper. The proposed classification is partly based on the extensive work performed inthe Lifecon project, partly based on literature studies. The proposed classification is validated throughcomparison of real measurements made on a bridge located in Sweden and calculations using a fullprobabilistic degradation model. It is believed that such exposure classification is possible to use in aLMS to provide simplified service life analysis and possibilities to map the risk of degradation.

Keyword
Quantitative classification, exposure classes, carbonation, EN 206-1
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-8825 (URN)
Note
QC 20100716Available from: 2005-11-29 Created: 2005-11-29 Last updated: 2010-11-30Bibliographically approved
3. Development of the Swedish bridge management system by introducing a LMS concept
Open this publication in new window or tab >>Development of the Swedish bridge management system by introducing a LMS concept
2005 (English)In: Materials and Structures, ISSN 1359-5997, E-ISSN 1871-6873, Vol. 40, no 6, 627-639 p.Article in journal (Refereed) Published
Abstract [en]

The Swedish Road Administration (SRA) has developed an information technology (IT) based bridge and tunnel management system (BaTMan) that is widely implemented by the organisation. The system is a tool for operational, tactical and strategic management. However, this system does not include systems and tools for managing optimisation and long-term planning of␣Maintenance, Repair and Rehabilitation (MR&R) actions due to service life performance aspects. This paper discusses the need of service life performance analysis for sound optimisation and long-term planning of MR&R actions in the bridge management. The paper presents a service life performance analysis model that is based on a Markov chain model and the MEDIC method. The model is developed to manage different kinds of degradation characteristic and yet present a uniform result expressed in conditional probabilities. The paper discusses also the need of systems and tools for describing objects on both an overall level and on a component level.

Keyword
Service life performance analysis - Bridge management system - Markov chain - Maintenance
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-8826 (URN)10.1617/s11527-006-9175-z (DOI)000244454700008 ()
Note
QC 20100716Available from: 2005-11-29 Created: 2005-11-29 Last updated: 2010-11-30Bibliographically approved

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