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EN ISO 18674-7:2025

Geotechnical investigation and testing - Geotechnical monitoring by field instrumentation - Part 7: Measurement of strains: Strain gauges (ISO 18674-7:2025, Corrected version 2026-09)

Edition date: 2025-12-03
In Force
Available languages: French, English
Summary: This document specifies the measurement of strain by means of strain gauges and strainmeters carried out for geotechnical monitoring. General rules of performance monitoring of the ground, of structures interacting with the ground, of geotechnical fills and of geotechnical works are presented in ISO 18674-1. This document is applicable to: performance monitoring of 1-D structural members such as piles, struts, props and anchor tendons; 2-D structural members such as foundation plates, sheet piles, diaphragm walls, retaining walls and shotcrete/concrete tunnel linings; 3-D structural members such as gravity dams, earth- and rock-fill dams, embankments and reinforced soil structures; checking geotechnical designs and adjustment of construction in connection with the observational design procedure; evaluating stability during or after construction. With the aid of a stress-strain relationship of the material, strain data can be converted into stress and/or forces (for 1-D members; see ISO 18674-8) or stresses (for 2-D and 3-D members, see ISO 18674-5). NOTE            This document fulfils the requirements for the performance monitoring of the ground, of structures interacting with the ground and of geotechnical works by the means of strain measuring instruments as part of the geotechnical investigation and testing in accordance with References [1] and [2].

Dieses Dokument legt die Dehnungsmessung mit Hilfe von Dehnungsaufnehmern und Dehnungsdeformetern für die geotechnische Überwachung fest. Allgemeine Regeln für die messtechnische Überwachung von Baugrund, von Bauwerken, die mit dem Baugrund in Wechselwirkung stehen, von geotechnischen Auffüllungen und von geotechnischen Arbeiten sind in ISO 18674 1 dargelegt. Dieses Dokument ist anwendbar für:  die messtechnische Überwachung von  tragenden 1-D-Bauteilen wie Pfähle, Steifen, Stützen und Ankerzugglieder;  tragenden 2-D-Bauteilen wie Fundamentplatten, Spundwänden, Schlitzwänden, Stützwänden und Tunnelschalen aus Spritzbeton/Beton;  tragenden 3-D-Bauteilen wie Schwergewichtswänden, Erd- und Felsschüttdämmen, Aufschüttungen und bewehrten Schüttkörpern;  die Überprüfung geotechnischer Entwürfe und Konstruktionsanpassung in Verbindung mit der Anwendung der Beobachtungsmethode;  die Bewertung der Stabilität während oder nach dem Bau. Mit Hilfe einer Spannungs-Dehnungs-Beziehung des Baustoffs können Dehnungsdaten in Spannungen und/oder Kräfte (für 1-D-Bauteile; siehe ISO 18674 8) oder Spannungen (für 2-D- und 3-D-Bauteile, siehe ISO 18674 5) umgewandelt werden. ANMERKUNG Dieses Dokument erfüllt die Anforderungen an die messtechnische Überwachung von Baugrund, von Bauwerken, die mit dem Baugrund in Wechselwirkung stehen, und von geotechnischen Arbeiten mittels Dehnungsmessgeräten als Teil geotechnischer Erkundung und Untersuchung nach Literaturhinweis [1] und Literaturhinweis [2].

Le présent document spécifie la mesure des déformations à l'aide de jauges de déformation et de jauges extensométriques à des fins de surveillance géotechnique. Les règles générales de surveillance des performances du terrain, des structures en interaction avec le terrain, des remblais et des travaux géotechniques sont présentées dans l'ISO 18674-1. Le présent document s'applique: —     à la surveillance des performances des: —    éléments structurels 1‑D, tels que les pieux, les jambes de force, les butons et les armatures de précontrainte d'ancrage; —    éléments structurels 2‑D, tels que les dalles de fondation, les palplanches, les parois moulées, les murs de soutènement et les revêtements de tunnels en béton/béton projeté; —    éléments structurels 3‑D, tels que les barrage‑poids, les barrages en terre et en remblai rocheux, les talus et les structures de sol renforcées; —     au contrôle des calculs géotechniques et à l'ajustement d'une construction en lien avec la procédure observationnelle; —     à l'évaluation de la stabilité durant ou après la construction. En étudiant la relation contrainte‑déformation d'un matériau, les données de déformation peuvent être converties en contraintes et/ou en forces (pour les éléments 1‑D, voir l'ISO 18674-8) ou en contraintes (pour les éléments 2‑D et 3‑D, voir l'ISO 18674-5). NOTE            Le présent document satisfait aux exigences de surveillance des performances du terrain, des structures en interaction avec le terrain et des travaux géotechniques à l'aide d'instruments de mesure des déformations dans le cadre de la reconnaissance et des essais géotechniques conformément aux Références [1]et [2].

ICS: 93.020-Earthworks. Excavations. Foundation construction.
CTN: CEN/TC 341 - 404517

Otras Relaciones

Acuerdo de Viena ISO 18674-7:2025

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