SIST EN 14399-2:2005
(Main)High-strength structural bolting assemblies for preloading - Part 2: Suitability test for preloading
High-strength structural bolting assemblies for preloading - Part 2: Suitability test for preloading
This part of this European Standard specifies a tightening test to verify the suitability of high strength bolt/nut/washer assemblies for preloaded bolted connection in metallic structures.
The purpose of this test is to check the behaviour of the fastener assembly so as to ensure that the required preload can be reliably obtained by the tightening methods specified in ENV 1090-1 with sufficient margins against over tightening and against failure.
Hochfeste planmäßig vorspannbare Schraubenverbindungen für den Metallbau - Teil 2: Prüfung der Eignung zum Vorspannen
Dieser Teil dieser europäischen Norm beschreibt einen Anziehversuch zur Überprüfung der Eignung von hochfesten Garnituren aus Schraube, Mutter und Scheiben für vorgespannte Schraubenverbindungen in Metallkonstruktionen.
Das Ziel dieses Versuches ist die Überprüfung des Verhaltens der Garnitur von Verbindungselementen um sicherzustellen, dass die geforderte Vorspannung zuverlässig mit den Anziehmethoden, die in ENV 1090-1 festgelegt sind, mit genügend Reserven gegen übermäßiges Anziehen und gegen Versagen erreicht werden kann.
Boulonnerie de construction métallique a haute résistance apte a la précontrainte - Partie 2 : Essai d'aptitude a l'emploi pour la mise en précontrainte
La présente partie de cette Norme européenne définit un essai de serrage permettant de vérifier l'aptitude a l'emploi des ensembles vis/ écrou/ rondelle) dans les assemblages boulonnés précontraints des structures de génie civil.
Le présent essai a pour objet de vérifier le comportement de l'ensemble de boulonnage de façon a garantir que la précontrainte requise peut etre obtenue de façon fiable avec les méthodes de serrage spécifiées dans l'ENV 1090-1, avec une marge de sécurité suffisante vis-a-vis d'un serrage excessif et de la rupture.
Visokotrdnostne strukturne vijačne zveze za prednapetje - 2. del: Ustreznost preskusa za prednapetje
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Hochfeste planmäßig vorspannbare Schraubenverbindungen für den Metallbau - Teil 2: Prüfung der Eignung zum VorspannenBoulonnerie de construction métallique a haute résistance apte a la précontrainte - Partie 2 : Essai d'aptitude a l'emploi pour la mise en précontrainteHigh-strength structural bolting assemblies for preloading - Part 2: Suitability test for preloading21.060.01Vezni elementi na splošnoFasteners in generalICS:Ta slovenski standard je istoveten z:EN 14399-2:2005SIST EN 14399-2:2005en01-maj-2005SIST EN 14399-2:2005SLOVENSKI
STANDARD
SIST EN 14399-2:2005
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14399-2March 2005ICS 21.060.01English versionHigh-strength structural bolting assemblies for preloading - Part2: Suitability test for preloadingBoulonnerie de construction métallique à haute résistanceapte à la précontrainte - Partie 2 : Essai d'aptitude àl'emploi pour la mise en précontrainteHochfeste planmäßig vorspannbareSchraubenverbindungen für den Metallbau - Teil 2: Prüfungder Eignung zum VorspannenThis European Standard was approved by CEN on 30 April 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2005 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14399-2:2005: ESIST EN 14399-2:2005
EN 14399-2:2005 (E) 2 Contents
page Foreword.3 1 Scope.4 2 Normative references.4 3 Terms and definitions.4 4 Symbols and units.4 5 Principle of the test.5 6 Test apparatus.6 7 Test assemblies.6 8 Test set-up.7 9 Test procedure.7 10 Evaluation of the test results.8 11 Test report.11 Annex A (informative)
Special testing conditions and procedures.12 Bibliography.13
SIST EN 14399-2:2005
EN 14399-2:2005 (E) 3 Foreword This document (EN 14399-2:2005) has been prepared by Technical Committee CEN/TC 185, "Threaded and non-threaded mechanical fasteners and accessories", the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2005, and conflicting national standards shall be withdrawn at the latest by September 2005. Rules for design and execution of bolted connections with preloaded high-strength structural bolts are respectively defined in ENV 1993-1-1 (Eurocode 3) and ENV 1090-1 for general rules and rules for buildings. This test, which determines the functional characteristics identified in the relevant product standards, has been de-veloped to confirm the suitability of a high strength bolt/nut/washer assembly for preloaded bolted connections in civil engineering structures. This document includes a Bibliography. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following coun-tries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Esto-nia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. SIST EN 14399-2:2005
EN 14399-2:2005 (E) 4 1 Scope This document specifies a tightening test to verify the suitability of high strength bolt/nut/washer assemblies for pre-loaded bolted connection in metallic structures. The purpose of this test is to check the behaviour of the fastener assembly so as to ensure that the required pre-load can be reliably obtained by the tightening methods specified in ENV 1090-1 with sufficient margins against over tightening and against failure.
2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 14399-1:2005, High-strength structural bolting assemblies for preloading — Part 1: General requirements. EN 14399-3, High-strength structural bolting assemblies for preloading — Part 3: System HR — Hexagon bolt and nut assemblies. EN 14399-4 High-strength structural bolting assemblies for preloading — Part 4: System HV — Hexagon bolt and nut assemblies. EN 14399-5, High-strength structural bolting assemblies for preloading — Part 5: Plain washers. EN 14399-6, High-strength structural bolting assemblies for preloading — Part 6: Plain chamfered washers. EN ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 1: Bolts, screws and studs (ISO 898-1:1999). 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 14399-1:2005 apply. 4 Symbols and units A elongation, (mm) As nominal stress area of the bolt, (mm2) (see EN ISO 898-1) d nominal thread diameter, (mm) Fb bolt force during the test, (kN) Fbi
individual value of the bolt force related to a given nut rotation, torque or bolt elongation, (kN) Fbm mean value of Fbi values, (kN) Fbi,max individual value of the maximum bolt force reached during the test, (kN) Fp specified preload of 0,7 fub As, (kN) SIST EN 14399-2:2005
EN 14399-2:2005 (E) 5 fub nominal tensile strength (Rm,nom), (MPa) k
k-factor ki individual value of the k-factor km mean value of the k-factor lb,eff effective preloaded bolt length given as the clamp length (Σt) plus half the nominal nut height, (mm) M torque applied during the test, (Nm) Mi individual value of the torque applied during the test, (Nm) Mspec specified value of the torque to be applied to the bolt, (Nm) n number of test results sF estimated standard deviation of the Fbi values sk estimated standard deviation of the ki -values t thickness of a clamped part, (mm) VF coefficient of variation of the Fbi values Vk coefficient of variation of the ki-values θ
angle of rotation of the nut relative to the bolt, (°) θ pi individual value of the angle θ at which the bolt force has first reached the value of Fp, (°) θ1i
individual value of the angle θ at which the bolt force has reached its maximum value Fbi, max, (°) θ 2i individual value of the angle θ
at which the test is stopped, (°) ∆θ 1i individual angle difference (θ 1i - θ pi), (°) ∆θ 2i individual angle difference (θ 2i - θ pi), (°) ∆θ 2 min minimum required value of the angle difference ∆θ 2i as specified in the relevant product standard (°) Σt clamp length given as the total thickness of the clamped parts between the nut bearing face and the bolt head bearing face, (mm) 5 Principle of the test The principle of the test is to tighten the assembly and to measure, during tightening, the following parameters: the bolt force; the relative rotation between the nut and the bolt; the torque, if required; the bolt elongation, if required. SIST EN 14399-2:2005
EN 14399-2:2005 (E) 6 6 Test apparatus The test apparatus shall be made of steel. The block on which the assembly is mounted shall b
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