European Manual for in-situ Assessment of Important Existing Structures

Rainer Flesch, Herbert Friedl

Publikation: Beitrag in Buch oder TagungsbandBuchkapitel


ABSTRACT SCOPE OF LESSLOSS SP5 LESSLOSS SP5 is on In-situ Assessment, Monitoring and Typification of Buildings and Infrastructure. It focuses on innovative and state of the art methods for the assessment of the following important existing structures: - Buildings whose integrity during earthquakes is of vital importance for civil protection, e.g. hospitals, fire stations, power plants, telecommunication facilities, etc. (importance class IV according to EN1998-1:2005) - Bridges of critical importance for maintaining communications, especially in the immediate post-earthquake period, bridges where failure is associated with a large number of probable fatalities and major bridges, where a design life greater than normal is required (importance class III according to EN 1998-2:2005) - Buildings whose seismic resistance is of importance in view of the consequences associated with a collapse, e.g. schools, assembly halls, cultural institutions, etc. (importance class III according to EN1998-1:2005) - Industrial facilities, where secondary risks exist, e.g. the risk of release of toxic and/ or explosive materials - Cultural heritage It is of high importance, that these structures remain greatly undamaged and serviceable. If necessary, their earthquake resistance has to be increased based on the results of assessment. Normally the highest degree of knowledge is necessary to afford safety assessments for such structures. It is attained by setting a detailed, often 3D, structural model, based on careful surveys updated by using measured dynamic properties. It is one of the basic ideas of SP5 to integrate experimental techniques into the assessment procedure, which is an advantage one has in the case of existing buildings. If such investigations are carried out in the pre-earthquake phase, measures for seismic upgrading can be undertaken in due time. In the post-earthquake phase these investigations enable the determination of the remaining safety and the serviceability, especially if mathematical models representing the previous status of the structure were elaborated before, which may in general already be characterized by damage). Hence, the task damage detection is crucial within LESSLOSS/ SP5. The most important product of SP5 is the European Manual for in-situ Assessment of the Earthquake Resistance of Important Existing Structures. The manual provides also an overlook over literature useful for practical application. Many criteria and tools are already existing, but too less evident and therefore not accessible to the designers/ practitioners. The Manual consists of Part I: Training and Part II: Practical Application. The personnel which has to be trained should have a fundamental education in structural dynamics and earthquake engineering (SD&EE). But the most important chapters of SD&EE, which are relevant for structural assessment, are summarized in an adequate, illustrative way in the Training Manual. The basis for the manuals are the deliverables D19, version 2007, D19A, version 2006 and D20, version 2007 of LESSLOSS SubProject SP5. Especially in the Application - Part the procedures are demonstrated via case studies.
TitelLESSLOSS - Risk mitigation for earthquakes and landslideslessloss - risk mitigation for earthquakes and landslides
PublikationsstatusVeröffentlicht - 2007

Research Field

  • Ehemaliges Research Field - Mobility Systems


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