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EN 1991-1-4:2026

Eurocode 1 - Actions on structures - Part 1-4: Wind actions

Edition date: 2026-10-01
In Force
Available languages: English
Summary: 1.1 Scope of EN 1991-1-4 (1) This document gives rules for the determination of natural wind actions for the structural design of building and civil engineering works for each of the loaded areas under consideration. This includes actions applied to the whole structure or parts of it, as well as wind-exposed elements attached to the structure. (2) This document is applicable to: - buildings and other civil engineering works with heights up to 200 m; - guyed masts, other open lattice structures and chimneys with heights up to 300 m; - bridges having no span greater than 200 m. (3) The rules contained in this document allow the evaluation of characteristic wind actions on land-based structures. (4) This document is applicable to offshore coastal structures. NOTE Additional or amended provisions can be necessary. (5) This document does not give guidance on non-synoptic winds (e.g. thunderstorms, downbursts, microbursts, tornadoes, etc.), mixed wind climates, nor does it give guidance on how to account for local effects (e.g. thermal effects, funnelling, strong arctic thermal surface inversion, etc.). (6) This document addresses simplified procedures for dynamic effects, mostly based on the assumption of a dominant single-mode response (see Annex E, Annex F and Annex G). General criteria for performing a full dynamic analysis under aerodynamic excitation are not treated in this document. (7) Wind pressure effects of passing vehicles are outside the scope of this document. NOTE See EN 1991 2 for wind effects from passing trains. 8) This document also provides guidance on wind tunnel testing and numerical modelling which can be needed or desirable when the shape or structural behaviour are unusual or do not strictly fall within the rules of the document, or in cases of unusual orography or other surroundings. 1.2 Assumptions (1) The assumptions given in EN 1990-1:2023+A1:2026, 1.2 apply.

1.1 Domaine d'application de l’EN 1991-1-4 (1) Le présent document donne les règles pour déterminer les actions du vent naturel pour le calcul structurel des bâtiments et des ouvrages de génie civil, sur chacune des surfaces chargées à considérer. Ceci inclut les actions appliquées à l'ensemble de la structure, ou à certaines de ses parties, ainsi qu’aux éléments exposés au vent fixés à la structure. (2) Le présent document s'applique aux : - bâtiments et autres ouvrages de génie civil dont la hauteur peut atteindre 200 m ; - mâts haubanés, autres structures treillis ouvertes et cheminées d’une hauteur pouvant atteindre 300 m ; - ponts dont aucune travée n'est supérieure à 200 m. (3) Les règles contenues dans le présent document permettent l’évaluation des actions caractéristiques du vent sur les structures terrestres. (4) Le présent document s'applique aux structures côtières offshore. NOTE Des dispositions supplémentaires ou modifiées peuvent s’avérer nécessaires. (5) Le présent document ne donne pas de recommandations sur les vents non synoptiques (par exemple, orages, rafales descendantes, microrafales, tornades, etc.), les climats à vents mixtes, ni sur la manière de prendre en compte les effets locaux (par exemple, effets thermiques, entonnoirs, forte inversion thermique de surface en Arctique, etc.). (6) Le présent document traite de procédures simplifiées pour les effets dynamiques, principalement fondées sur de l'hypothèse d'une réponse sur un mode unique dominante (voir l’Annexe E, l’Annexe F et l’Annexe G). Le présent document ne traite pas des critères généraux permettant d'effectuer une analyse dynamique complète sous l'effet d'une excitation aérodynamique. (7) Les effets de pression aérodynamique dus à des véhicules en mouvement sortent du domaine d'application du présent document. NOTE Voir l'EN 1991 2 pour les effets du vent dus aux trains circulant sur un pont. (8) Le présent document fournit également des recommandations concernant les essais en soufflerie et la modélisation numérique, qui peuvent être nécessaires ou souhaitables lorsque la forme ou le comportement structurel sont inhabituels ou ne relèvent pas strictement des règles du document, ou encore en cas d’orographie ou d’environnement particuliers. 1.2 Hypothèses (1) Les hypothèses données dans l'EN 1990-1:2023+A1:2026, 1.2 s'appliquent.

1.1 Anwendungsbereich von EN 1991 1 4 (1) Dieses Dokument enthält Regeln zur Bestimmung der Einwirkungen natürlichen Windes auf sämtliche der in die Tragwerksbemessung von Hoch- und Ingenieurbauten einbezogenen Lasteinzugsflächen. Damit werden Einwirkungen auf das ganze Tragwerk oder Teile davon sowie windbeanspruchte Elemente, die mit dem Tragwerk verbunden sind, erfasst. (2) Dieses Dokument gilt für:  Hoch- und sonstige Ingenieurbauten mit einer Höhe bis 200 m;  abgespannte Masten, sonstige offene Fachwerk- oder Gittertragwerke und Schornsteine mit einer Höhe bis 300 m;  Brücken, deren Felder eine Länge von höchstens 200 m haben. (3) Die in diesem Dokument angegebenen Regeln ermöglichen die Beurteilung charakteristischer Windeinwirkungen auf Bauwerke an Land. (4) Dieses Dokument gilt für Offshore-Bauwerke. ANMERKUNG Zusätzliche oder abgeänderte können Festlegungen notwendig sein. (5) Dieses Dokument enthält weder Hinweise zu nichtsynoptischen Winden (z. B. Gewitterstürmen, Downbursts, Microbursts, Tornados usw.) und Klimaten mit gemischten Winden noch Hinweise zur Berücksichtigung lokaler Auswirkungen (z. B. thermische Auswirkungen, Trichterbildung, starke arktische thermische Oberflächeninversion usw.). (6) Dieses Dokument behandelt vereinfachte Verfahren für dynamische Wirkungen, die in den meisten Fällen auf der Annahme einer durch nur eine vorherrschende Mode gekennzeichneten Tragwerksantwort (en: single-mode response) basieren (siehe Anhang E, Anhang F und Anhang G). Allgemeine Kriterien für die Durchführung einer umfassenden dynamischen Berechnung bei aerodynamischer Anregung werden in dieser Norm nicht behandelt. (7) Druck- und Sogwirkungen vorbeifahrender Fahrzeuge sind nicht Gegenstand dieses Dokuments. ANMERKUNG Zu den Druck- und Sogwirkungen vorbeifahrender Züge siehe EN 1991 2. (8) Dieses Dokument enthält ebenfalls Hinweise zu Windkanalversuchen und Berechnungsmodellen, die erforderlich oder erwünscht sein können, wenn die Form oder das Tragverhalten ungewöhnlich sind oder nicht streng in den Anwendungsbereich der Regeln dieses Dokuments fallen oder in Fällen ungewöhnlicher Orographie oder sonstiger Umgebungsbedingungen. 1.2 Voraussetzungen (1) Es gelten die in EN 1990:2023, 1.2, angegebenen Voraussetzungen.
ICS: 91.010.30-Technical aspects
CTN: CEN/TC 250 - 6231

Modificaciones Normas

Es modificada por EN 1991-1-4:2026/prA1

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