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EN 1998-2:2025

Eurocode 8 - Design of structures for earthquake resistance - Part 2: Bridges

Edition date: 2025-03-05
In Force
Available languages: French, English
Summary: EN 1998-2 is intended to be applied to the design of new bridges in seismic regions. It covers the design of reinforced concrete, steel and composite steel-concrete bridges and provides guidance for the design of timber bridges. EN 1998-2 is applicable to the seismic design of bridges exploiting ductility in structural members or through the use of antiseismic devices. When ductility is exploited, this part primarily covers bridges in which the horizontal seismic actions are mainly resisted through bending of the piers or at the abutments; i.e. of bridges composed of vertical or nearly vertical pier systems supporting the traffic deck superstructure. It is also applicable to the seismic design of arched bridges, although its provisions should not be considered as fully covering these cases. Suspension bridges and masonry bridges, moveable bridges and floating bridges are not included in the scope of EN 1998-2.

Le présent document s'applique au dimensionnement et à la vérification des ponts neufs dans les régions sismiques. Il donne des règles générales pour le dimensionnement et la vérification des ponts des classes de conséquences CC1, CC2 et CC3, telles que définies dans l'EN 1990:2023, A.2. NOTE 1 L'EN 1998 2 couvre le calcul des ponts en béton armé, en acier et des ponts mixtes acier-béton, à l'exception des piles précontraintes. Des recommandations pour le dimensionnement des ponts en bois sont données dans l'Annexe C informative. NOTE 2 L'évaluation des ponts existants est couverte dans l'EN 1998 3. (2) Sauf indication contraire, l'EN 1998 1 1 et l'EN 1998 5 s'appliquent. (3) L'EN 1998 2 est applicable en complément des autres Eurocodes pertinents. NOTE L'EN 1998 2 ne contient que les dispositions qui sont utilisées pour la conception des ponts neufs en zone sismique, en plus des dispositions contenues dans les autres Eurocodes pertinents. À cet égard, l'EN 1998 2 complète les autres Eurocodes. (4) L'EN 1998 2 fournit des exigences de performance de base et des critères de conformité applicables aux ponts neufs dans les régions sismiques. (5) L'EN 1998 2 est applicable au calcul sismique des ponts exploitant la ductilité des éléments structuraux ou par l'utilisation de dispositifs antisismiques. (6) L'EN 1998 2 donne des règles de dispositions constructives pour la ductilité des éléments structuraux des ponts conçus pour exploiter la ductilité comme moyen de protection sismique. Lorsque la ductilité est exploitée, l'EN 1998 2 couvre en premier lieu les ponts pour lesquels la résistance aux actions sismiques horizontales est principalement assurée par la flexion des piles ou des culées, c'est-à-dire les ponts composés de systèmes de piles verticales ou presque verticales sur lesquelles repose la structure du tablier supportant la circulation. (7) L'EN 1998 2 donne des règles spécifiques pour les ponts équipés de dispositifs antisismiques, pour les ponts à haubans et extradossés et pour les ponts intégraux. (8) L'EN 1998 2 est également applicable au dimensionnement sismique des ponts en arc, bien qu'il convienne que ses dispositions ne soient pas considérées comme couvrant entièrement ce cas. NOTE Les ponts suspendus et les ponts en maçonnerie, les ponts mobiles et les ponts flottants ne sont pas inclus dans le domaine d'application de la présente partie.
ICS: 91.120.25-Seismic and vibration protection, 93.040-Bridge construction
CTN: CEN/TC 250 - 6231

Modificaciones Normas

Es modificada por EN 1998-2:2025/prA1

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