Zürich

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CENAT PhD candidates meeting in field of natural hazards, Zürich 2001

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Zürich

  1. 1. 4th PhD Meeting in the field of natural hazards Zürich, Switzerland 16.-18. September 2001 Dipl.-Ing. Maria Bostenaru
  2. 2. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Structure • Introduction to the PhD thesis • The building survey system – Role – Development goals – Photographic measurements and its results – Laser measurement and its results – Layers in the digital model of the building • Conclusions
  3. 3. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Introduction to the PhD thesis: Concept • a strategic planning system for seismic risk reduction • plan implementation • economic, social and administrative guide lines • different actors in the implementation of retrofit measures • evaluation as multicriteria decision • benefit-costs-analysis • not utility value • probe and consideration • development of • a framework for the summary of the information and decision making • a method which conceptually supports the experts in setting the priorities • main focus lies on the layer of building
  4. 4. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Introduction to the PhD thesis: Issues • necessity to develop specific retrofit measures for old buildings in Bucharest, Romania • interweaved building substance • seldom retrofit measures • main concerning on reinforced concrete • realisation of retrofit measures has some sociological aspects • about ine 5th of the town area on the south of 'kPERYL D demolished • city slightly affected from this measures • each relocation regarded suspiciously • today: unclear property relations and different intentions of the owners
  5. 5. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Introduction to the PhD thesis: Goals • development of a strategic planing system for the reduction of the seismic risk • main focus • interfaces between different planning layers • priority setting in the realisation of retrofit measures • measures and realisation steps should be simulated on different layers
  6. 6. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Introduction to the PhD thesis: Methods • starting point: holistic approach to catastrophe management • interdisciplinarity • estimation of capacities and vulnerabilities • planing strategy • intervention layers – intensive zones – global zones • criteria for priority setting • detailed demonstration project – information tool – benefit-costs-analysis
  7. 7. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Introduction to the PhD thesis: Results • focus until now: building models • framework for an integrated information and decision tool • costs calculation methods • methodology which uses “retrofit elements” • contacts to researchers in Greece and Italy • approaches about retrofitting monuments • most recent: building record • theme of this paper
  8. 8. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Role of the building survey system • Many actors implied in planing measures for improving seismic resistance • have to communicate using some basis frame structure • interested in different “structures” in the building • survey plans available only for few buildings • access problems • problems related to the short survey time • special structuring of the building for costs estimation as • no statistical data for the units usually taken are available • survey wasn’t usually structured for such goals
  9. 9. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Development goals • Modeling of existing buildings – stucturing of the building • spatial elements • data related to the spatial elements – identification of spatial elements on which this data can be linked • depending on the information need of actors in the design process • depending on architectural, constructive and economic aspects • Main goal: – facilitation of the co-operation between actors implied in the design process – goal oriented building survey
  10. 10. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Photographic measurement • Today’s software tools allow rapid building survey – digital photographs Í 3D building model in vector form • low accessibility requirements • quick processing • one-man work • low precision • The software alone is no system – structuring of the information is needed – post processing for more precision, after data obtained with other aids is also needed
  11. 11. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Photographic measurement results • Structuring of the building into shells – contained one in the other
  12. 12. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Photographic measurement results • Structuring of the building into shells – contained one in the other Building shell
  13. 13. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Photographic measurement results • Structuring of the building into shells – contained one in the other storey shell
  14. 14. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Photographic measurement results • Structuring of the building into shells – contained one in the other Other storey shells
  15. 15. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Photographic measurement results • Structuring of the building into shells – contained one in the other Floor element
  16. 16. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Photographic measurement results • Structuring of the building into shells – contained one in the other Ceiling element
  17. 17. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Photographic measurement results • Structuring of the building into shells – contained one in the other Wall element
  18. 18. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Photographic measurement results • Back to building shell – providing reference points – defining building elements between these
  19. 19. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Photographic measurement results • Back to building shell – providing reference points – defining building elements between these
  20. 20. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Photographic measurement results • Back to building shell – providing reference points – defining building elements between these – defining spaces between these
  21. 21. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Photographic measurement results • The measurement results build a spatial vectorial drawing of the building • Dimensions are aproximative • CAD use allows structuring of the information Í model building • Where rapid survey is not enough, laser measurement provides more exactity
  22. 22. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Laser measurement • Laser measurement took gradually the place of the traditional building survey – long time (except 3D-scanning - a kind of photography – high precision – almost one-man work – some accessibility problems – suitable for detail work • Software tools for using the data obtained in this way are in development – CAD compatible – custom configuration possibility
  23. 23. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Laser measurement results • elements measured by the laser – fit in the aproximative structure defined through photographic measuring – are detailed surveyed • data from laser measurement are available as data tables • modifications are made with use of the database • vector elements are generated from the databases
  24. 24. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Layers in the digital model of the building • The measurement layer provides lines – these can be grouped to provide the elements needed by different actors in the planning process • retrofit measures – structural aspects Í structure layer – functional aspects Í building spaces layer – aesthetic aspects Í building elements layer – economic efficiency Í surface and volumes layer • Procedures – allow derivation of further layers from the measurement one
  25. 25. 16-18.09.2001 CENAT PhD Meeting 2001 Zürich, Switzerland Maria Bostenaru, University of Karlsruhe, GERMANY Conclusions • The measurement results are the basis for the costs estimation

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