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System for Predictive Life cycle Management of Buildings and Infrastructures
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
2009 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The Life Cycle Management System (LMS) aims at supporting decision-makers and engineers in their efforts to achieve a more optimised proactive life cycle design and maintenance management strategy. LMS is an open and integrative system, which has to be adapted and developed in order to meet the needs and requirements of users. This process should be geared to and governed by the clients. The Architecture, Engineering, Construction and Facility Management (AEC/FM) sector includes all varieties of clients and stakeholders, all of them having different qualifications, possibilities and requirements for implementing, or increasing the feature of predictive maintenance management and optimised proactive strategies. The possibilities of adopting predictive maintenance management are dependent on the availability of performance-over-time and service life forecasting models and methods. The relevance of these models and methods depends on the required level of detailing. Furthermore, the use of the models and methods depends on the availability of reliable input data, such as material data and environmental exposure/in-use condition data. The thesis aims at analysing the possibilities of implementing predictivity in different fields of applications and at evaluating relevant tools facilitating management of information associated with predictive maintenance management systems. The thesis includes studies of three different clients and fields of application; Swedish Road Administration – management of bridges, Locum AB – management of hospital buildings, and Gävle Energi AB – management of district heating distribution systems. While the Swedish Road Administration is responsible to ensure an economically efficient, sustainable transport system for the society throughout the country, Locum AB and Gävle Energi AB compete on an "open" market. The Swedish Road Administration have gathered information about their bridges since 1944, for what reason their bridge management system includes a large amount of valuable data for performance-over- time analyses and service life forecasting. Locum AB has recently begun to systematically gather condition data, why the amount of data is limited. However, since the performance of buildings generally is well known, it is assumed that possibilities of implementing predictive maintenance management tools are rather good. Since district heating pipes are buried into the ground, it is difficult to assess the condition. Therefore, data for service life estimation rely mainly on damage reports. Environmental exposure data on macro or meso level can be obtained from meteorological and environmental institutes, thus making it possible to apply available dose-response and damage functions. Environmental exposure data on a micro level are lacking. Guidelines, methods and tools for environmental measuring and modelling on a micro level are therefore strongly needed. Efficient management of information plays an important role in predictive life cycle management systems. The ongoing development and implementation of open Building Information Model (BIM) tools in the AEC/FM sector is a promising progress of making the information management more cost effective and valuable, especially when open BIM solutions being fully integrated into the AEC/FM business. Geographical Information Systems (GIS) are tools for efficient handling of spatial positioned information. GIS provide possibilities of processing and presenting, e.g., environmental exposure data and environmental risk factors.

Place, publisher, year, edition, pages
Stockholm: KTH , 2009. , viii, 100 p.
Keyword [en]
Life Cycle Management System, service life, performance-over-time, maintenance management
Identifiers
URN: urn:nbn:se:kth:diva-10312ISBN: 978-91-7415-262-3 (print)OAI: oai:DiVA.org:kth-10312DiVA: diva2:214580
Public defence
2009-04-24, Gävle Teknikpark, Hörsalen, Nobelvägen 2, Gävle, 10:00 (English)
Opponent
Supervisors
Note
QC 20100716Available from: 2009-05-06 Created: 2009-05-06 Last updated: 2012-03-14Bibliographically 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
Show others...
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: 2017-12-14Bibliographically approved
4. Service Life Tools and Methodologies; Standards and aLife Cycle Management System
Open this publication in new window or tab >>Service Life Tools and Methodologies; Standards and aLife Cycle Management System
2007 (English)In: Third International Conference onMaintenance and Facility Management, 2007Conference paper, Published paper (Refereed)
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-10307 (URN)
Note
QC 20100716Available from: 2009-05-06 Created: 2009-05-06 Last updated: 2010-07-16Bibliographically approved
5. Life Cycle Management System: A planning tool supporting Long-term based design and maintenance planning
Open this publication in new window or tab >>Life Cycle Management System: A planning tool supporting Long-term based design and maintenance planning
2008 (English)In: 11th International Conference on Durability of Building Materials and Components, 2008Conference paper, Published paper (Refereed)
National Category
Materials Engineering
Identifiers
urn:nbn:se:kth:diva-10308 (URN)
Conference
11th International Conference on Durability of Building Materials and Components
Note
QC 20100716Available from: 2009-05-06 Created: 2009-05-06 Last updated: 2012-03-23Bibliographically approved
6. On the use of 4D BIM in LMS for construction works
Open this publication in new window or tab >>On the use of 4D BIM in LMS for construction works
2009 (English)In: Journal of Information Technology in Construction (ITcon), ISSN 1874-4753, E-ISSN 1874-4753Article in journal (Refereed) Accepted
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-10309 (URN)
Note

QC 20100716

Available from: 2009-05-06 Created: 2009-05-06 Last updated: 2017-12-13Bibliographically approved
7. A Steady State Thermal Duct Model Derived by Fin-Theory Approach and Applied on an Unglazed Solar Collector.
Open this publication in new window or tab >>A Steady State Thermal Duct Model Derived by Fin-Theory Approach and Applied on an Unglazed Solar Collector.
2009 (English)In: Solar Energy, ISSN 0038-092X, E-ISSN 1471-1257, Vol. 84, no 10, 1838-1851 p.Article in journal (Refereed) Published
Abstract [en]

This paper presents the thermal modelling of an unglazed solar collector (USC) flat panel, with the aim of producing a detailed yet swift thermal steady-state model. The model is analytical, one-dimensional (ID) and derived by a fin-theory approach. It represents the thermal performance of an arbitrary duct with applied boundary conditions equal to those of a flat panel collector. The derived model is meant to be used for efficient optimisation and design of USC flat panels (or similar applications), as well as detailed thermal analysis of temperature fields and heat transfer distributions/variations at steady-state conditions; without requiring a large amount of computational power and time. Detailed surface temperatures are necessary features for durability studies of the surface coating, hence the effect of coating degradation on USC and system performance. The model accuracy and proficiency has been benchmarked against a detailed three-dimensional Finite Difference Model (3D FDM) and two simpler ID analytical models. Results from the benchmarking test show that the fin-theory model has excellent capabilities of calculating energy performances and fluid temperature profiles, as well as detailed material temperature fields and heat transfer distributions/variations (at steady-state conditions), while still being suitable for component analysis in junction to system simulations as the model is analytical. The accuracy of the model is high in comparison to the 3D FDM (the prime benchmark), as long as the fin-theory assumption prevails (no 'or negligible' temperature gradient in the fin perpendicularly to the fin length). Comparison with the other models also shows that when the USC duct material has a high thermal conductivity, the cross-sectional material temperature adopts an isothermal state (for the assessed USC duct geometry), which makes the ID isothermal model valid. When the USC duct material has a low thermal conductivity, the heat transfer course of events adopts a 1D heat flow that reassembles the conditions of the 1D simple model (for the assessed USC duct geometry); ID heat flow through the top and bottom fins/sheets as the duct wall reassembles a state of adiabatic condition.

Keyword
PERFORMANCE; DEGRADATION; VALIDATION; SYSTEMS; SURFACE; DESIGN; ENERGY
National Category
Building Technologies Materials Engineering Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-19461 (URN)10.1016/j.solener.2010.06.016 (DOI)000282498500009 ()2-s2.0-77956180250 (Scopus ID)
Note
QC 20100810, QC 20111110Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved
8. Status, needs and possibilities for servicelife prediction and estimation of district heating distribution networks
Open this publication in new window or tab >>Status, needs and possibilities for servicelife prediction and estimation of district heating distribution networks
2012 (English)In: Structure and Infrastructure Engineering, ISSN 1573-2479, E-ISSN 1744-8980, Vol. 8, no 1, 41-54 p.Article in journal (Refereed) Published
Abstract [en]

An optimised and proactive maintenance strategy aims to maximise the economical profit, minimise environmental impacts and keep the risk of failure to a low level. Implementation of such a strategy in the context of district heating requires efforts and abilities for predicting future performances and estimating service life of district heating components. A literature review on failures (damages and performance reductions) occurring on district heating pipes, reveals that failures in district heating pipes are mainly leaks due to corrosion or mechanical impacts and reduced thermal insulation performance: leaks being the more serious damage type. A feasible service life estimation method for this type of damage is the Factor Method. Since the application of this method within the context of DH pipes has not been found in other publications, this paper focuses on describing the method and discusses the possibilities on how to apply it in two specific cases with respect to leakage: service life estimation of repaired district heating pipe sections (i.e. maintenance of district heating network) and of district heating pipes in new or extended district heating networks. Particular attention is paid to which modifying factors should be considered and how to quantify them.

Keyword
district heating, maintenance strategy, service life, Factor Method
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-10311 (URN)10.1080/15732470903213740 (DOI)000302541400003 ()2-s2.0-84855962123 (Scopus ID)
Note
QC 20120509Available from: 2009-05-06 Created: 2009-05-06 Last updated: 2017-12-13Bibliographically approved

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Citation style
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  • ieee
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