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EN 1998-3:2025

Eurocode 8 - Design of structures for earthquake resistance - Part 3: Assessment and retrofitting of buildings and bridges

Edition date: 2025-09-17
In Force
Available languages: French, English
Summary: 1.1 Scope of EN 1998-3 (1) This document is applicable to the assessment and retrofitting of buildings and bridges in seismic regions, namely as given in a) to c): a) to provide criteria for the assessment of the seismic performance of existing individual buildings and bridges; b) to describe the procedure to be followed in selecting necessary corrective measures; c) to set forth criteria for the design of retrofitting measures (i.e. design, structural analysis including intervention measures, final dimensioning of structural parts and their connections to existing structural members). NOTE 1 For the purposes of this document, retrofitting covers both the seismic upgrading (e.g. strengthening or adding a passive system) of undamaged structures and the repair and possible upgrading of earthquake-damaged structures. NOTE 2 Only the most common retrofit techniques are covered in this document. This does not exclude the use of other techniques, which can be developed in each country, based on the strengthening principles of this document. NOTE 3 Annex D gives flowcharts for the application of this document. (2) Unless specifically stated, EN 1998-1-1 and EN 1998-5 apply. (3) Reflecting the performance requirements of EN 1998-1-1:2024, 4.1, this document covers the seismic assessment and retrofitting of buildings and bridges made of the more commonly used structural materials: concrete, steel and composite, timber and masonry. NOTE Annexes B and C contain additional guidance related to the assessment of timber and masonry structures, respectively, and to their retrofitting when necessary. (4) This document is intended for the assessment of individual structures, to decide on the need for structural intervention and to design the retrofitting measures that may be necessary. It is not intended for the vulnerability assessment of populations or groups of structures in seismic risk evaluations for various purposes (e.g. for determining insurance risk, for setting risk mitigation priorities, etc.). (5) This document provides (in its material-specific Clauses 8 to 11) criteria for the verification of the more common retrofitting techniques currently in use. (6) This document gives specific rules for the assessment and retrofitting relevant to existing buildings and bridges of consequence classes CC1, CC2 and CC3, as defined in EN 1990:2023, 4.3. (7) Although the provisions of this document are applicable to all common categories of buildings and bridges, the seismic assessment and retrofitting of monuments and heritage structures often requires different types of provisions and approaches, depending on the nature of the monuments and heritage structures. 1.2 Assumptions (1) The assumptions of EN 1998-1-1 apply to this document. (2) The provisions of this document assume that the data collection and tests are performed by experienced personnel and that the engineer responsible for the assessment, the possible design of the retrofitting and the execution of work has appropriate experience of the type of structures being upgraded or repaired. (3) It is assumed that inspection procedures, checklists and other data-collection procedures will be documented and filed and referred to in the assessment/design documents.

1.1 Domaine d'application de l'EN 1998-3 (1) Le présent document est applicable à l'évaluation et à la mise à niveau des bâtiments et ponts dans les régions sismiques, comme indiqué en a) à c) : a) pour fournir des critères d'évaluation de la performance sismique des bâtiments et ponts existants considérés isolément ; b) pour décrire le mode opératoire à suivre pour sélectionner les mesures correctives nécessaires ; c) pour exposer les critères de dimensionnement pour la mise à niveau (c'est-à-dire calcul, analyse de la structure y compris les mesures à prendre, le dimensionnement final des éléments de structure et de leurs liaisons avec les éléments existants). NOTE 1 Pour les besoins du présent document, la mise à niveau couvre l'amélioration du comportement sismique (par exemple, renforcement ou ajout d'un système passif) de structures endommagées, ainsi que la réparation et la mise à niveau éventuelle des structures endommagées par un séisme. NOTE 2 Seules les techniques de mise à niveau les plus courantes sont couvertes dans le présent document. Cela n'exclut pas l'utilisation d'autres techniques, qui peuvent être développées dans chaque pays, sur la base des principes de renforcement du présent document. NOTE 3 L'Annexe D fournit des diagrammes pour l'application du présent document. (2) Sauf indication contraire, l'EN 1998-1-1 et l'EN 1998-5 s'appliquent. (3) Le présent document, qui reflète les exigences de performance de l'EN 1998-1-1:2024, 4.1, traite de l'évaluation et de la mise à niveau sismiques des bâtiments et ponts constitués de matériaux de construction couramment utilisés : béton, acier et mixte, bois et maçonnerie. NOTE Les Annexes B et C contiennent des recommandations supplémentaires relatives à l'évaluation des structures en bois et en maçonnerie, respectivement, et à leur mise à niveau, le cas échéant. (4) Le présent document est destiné à l'évaluation de structures individuelles, afin de décider de la nécessité d'une intervention sur la structure et d'élaborer les mesures de mise à niveau pouvant se révéler nécessaires. Elle n'est toutefois pas destinée à l'évaluation de la vulnérabilité de populations ou de groupes de structures pour des évaluations du risque sismique dans le cadre d'objectifs variés (par exemple pour déterminer le risque en termes d'assurance, pour établir les priorités en termes de réduction du risque, etc.). (5) Le présent document établit (dans ses Articles 8 à 11 spécifiques aux matériaux) des critères pour la vérification de mise à niveau utilisant les techniques actuellement les plus couramment utilisées. (6) Le présent document donne des règles spécifiques pour l'évaluation et la mise à niveau des bâtiments et ponts existants des classes de conséquences CC1, CC2 et CC3, telles que définies dans l'EN 1990:2023, 4.3. (7) Bien que les dispositions du présent document soient applicables à toutes les catégories courantes de bâtiments et de ponts, l'évaluation et la mise à niveau sismiques des monuments et des structures patrimoniales requièrent souvent des types de dispositions et d'approches différents, selon la nature des monuments et des structures patrimoniales. 1.2 Hypothèses (1) Les hypothèses de l'EN 1998-1-1 s'appliquent au présent document. (2) Les dispositions du présent document supposent que la collecte des données et les essais sont effectués par du personnel expérimenté et que l'ingénieur responsable de l'évaluation, du dimensionnement éventuel de la mise à niveau et de l'exécution des travaux, dispose d'une expérience appropriée relativement au type de structures faisant l'objet d'une amélioration ou d'une réparation. ...

1.1 Anwendungsbereich von EN 1998 3 (1) Dieses Dokument gilt für die Beurteilung und Ertüchtigung von Gebäuden und Brücken in Erdbebengebieten, und zwar wie in a) bis c) angegeben: a) um Kriterien für die Beurteilung des seismischen Verhaltens von bereits bestehenden einzelnen Gebäuden und Brücken bereitzustellen; b) um die für die Auswahl der notwendigen Korrekturmaßnahmen zu befolgende Verfahrensweise zu beschreiben; c) um Kriterien für die Planung von Ertüchtigungsmaßnahmen festzulegen (d. h. Planung, statische Berechnungen einschließlich der konstruktiven Eingriffe, endgültige Dimensionierung der tragenden Teile und ihrer Verbindungen zu vorhandenen tragenden Bauteilen). ANMERKUNG 1 Für die Anwendung dieses Dokuments umfasst die Ertüchtigung sowohl die seismische Modernisierung (z. B. Verstärkung oder Hinzufügung eines passiven Systems) von unbeschädigten Bauwerken als auch die Sanierung und mögliche Modernisierung von durch Erdbeben beschädigten Bauwerken. ANMERKUNG 2 In diesem Dokument werden nur die gebräuchlichsten Ertüchtigungsverfahren behandelt. Dadurch wird der Einsatz anderer Verfahren nicht ausgeschlossen, die in jedem Land basierend auf den in diesem Dokument dargelegten Stärkungsgrundsätzen entwickelt werden können. ANMERKUNG 3 Anhang D enthält Ablaufdiagramme für die Anwendung dieses Dokuments. (2) Sofern nicht ausdrücklich angegeben, gelten EN 1998 1 1 und EN 1998 5. (3) Entsprechend den Leistungsanforderungen von EN 1998 1 1:2024, 4.1, deckt dieses Dokument die seismische Beurteilung und Ertüchtigung von Gebäuden und Brücken ab, die aus den am häufigsten verwendeten Baustoffen bestehen: Beton, Stahl und Verbundwerkstoffe, Holz und Mauerwerk. ANMERKUNG Anhang B und Anhang C enthalten zusätzliche Hinweise bezüglich der Beurteilung von Holz- bzw. Mauerwerksbauten und, soweit notwendig, bezüglich deren Ertüchtigung. (4) Dieses Dokument behandelt die Beurteilung einzelner Bauwerke, um zu entscheiden, ob die Notwendigkeit eines konstruktiven Eingriffs besteht, und um gegebenenfalls die notwendigen Ertüchtigungsmaßnahmen zu planen. Sie ist nicht gedacht für die Vulnerabilitätsbeurteilung von Gesamtheiten oder Gruppen von Bauwerken im Zuge der Ermittlung des seismischen Risikos für unterschiedliche Zwecke (z. B. zur Bestimmung des Versicherungsrisikos, zur Setzung von Prioritäten bei Risikominderungsmaßnahmen usw.). (5) Dieses Dokument stellt (in ihren baustoffspezifischen Abschnitten Abschnitt 8 bis Abschnitt 11) Kriterien für den Nachweis der gängigsten unter den zurzeit angewendeten Ertüchtigungsverfahren zur Verfügung. (6) Dieses Dokument enthält spezifische Regeln für die Beurteilung und Ertüchtigung, die für bestehende Gebäude und Brücken der Versagensfolgeklassen CC1, CC2 und CC3, wie in EN 1990:2023, 4.3 festgelegt, maßgebend sind. (7) Obgleich die Vorgaben dieses Dokuments auf alle gängigen Kategorien von Gebäuden und Brücken anwendbar sind, erfordern die seismische Beurteilung und die Ertüchtigung von Denkmälern und zum kulturellen Erbe gehörenden Bauwerken häufig – je nach Art des Bauwerks - verschiedene Arten von Vorgaben und Ansätzen, die von der Beschaffenheit dieser Denkmäler und historischen Gebäude abhängen. 1.2 Voraussetzungen (1) Für dieses Dokument gelten die Voraussetzungen von EN 1998 1 1. (2) Die Vorgaben dieses Dokuments gehen von der Voraussetzung aus, dass die Datenerfassung und die Prüfungen von erfahrenem Personal durchgeführt werden und dass der für die Beurteilung, die mögliche Planung der Ertüchtigung und die Ausführung der Arbeiten verantwortliche Ingenieur über einschlägige Erfahrungen für den zu modernisierenden oder sanierenden Bauwerkstyp verfügt. ...

ICS: 91.010.30-Technical aspects, 91.120.25-Seismic and vibration protection
CTN: CEN/TC 250 - 6231

Modificaciones Normas

Es modificada por EN 1998-3:2025/prA1

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