SIST EN 12813:2004
(Main)Temporary works equipment - Load bearing towers of prefabricated components - Particular methods of structural design
Temporary works equipment - Load bearing towers of prefabricated components - Particular methods of structural design
This European Standard describes methods for establishing structural data for stiffness and resistance by calculation supported by tests for load bearing towers made of prefabricated components of steel or aluminium alloy. The vertical load capacity is established, both with or without horizontal loads and with the top restrained or free.
This European Standard specifies two methods of analysis, by first order theory, or by second order theory.
NOTE For definitions and requirements relating to structures and materials of the structure, specifications and loads, see EN 12812.
The European Standard is not intended for towers constructed with tubes and couplers: it is expected that they will be designed in accordance with EN 12812.
Temporäre Konstruktionen für Bauwerke - Stützentürme aus vorgefertigten Bauteilen - Besondere Bemessungsverfahren
Diese Europäische Norm beschreibt Verfahren zur Ermittlung konstruktiver Daten hinsichtlich der Steifigkeit und des Widerstandes durch Berechnung, gestützt auf Versuche, für Stützentürme aus vorgefertigten Bau-teilen aus Stahl oder Aluminiumlegierungen. Die Bestimmung erfolgt mit Vertikallasten sowie mit oder ohne Horizontallasten, wobei der Kopf des Stützenturms entweder horizontal gehalten oder frei sein kann.
Die meisten Bilder zur Veranschaulichung dieser Norm beziehen sich auf eine spezielle Bauart der Stützen-türme, die beschriebenen Verfahren gelten jedoch für alle Stützentürme.
Es ist auch ein Großversuch vorgesehen, der durchgeführt wird um nachzuweisen, dass die für die Berech-nung angewendete Modellierung ausreichend genau und auf der sicheren Seite liegend ist.
Diese Europäische Norm ist nicht für mit Rohren und Kupplungen gebaute Stützentürme vorgesehen: es wird davon ausgegangen, dass diese nach prEN 12812 bemessen werden.
Diese Europäische Norm legt zwei Berechnungsverfahren fest, das Verfahren mit Hilfe der Theorie I. Ordnung und das Verfahren mit Hilfe der Theorie II. Ordnung, um die Einwirkungen zu bestimmen die durch die Stützentürme aufgenommen werden können.
ANMERKUNG Zu den Definitionen und Anforderungen im Hinblick auf die Konstruktionen, die Konstruktionswerkstoffe sowie Festlegungen und Lasten siehe prEN 12812.
Equipements temporaires de chantiers - Tours d'étaiement en composants préfabriqués - Méthodes particulieres de calcul des structures
La présente Norme européenne décrit des méthodes d'établissement de données structurales relatives a la rigidité et a la résistance au moyen de calculs supportés par des essais sur les tours d'étaiement en composants préfabriqués en acier ou en alliage d'aluminium. Elles sont prises en compte avec des charges verticales, et avec ou sans charges horizontales, et leur sommet peut etre fixe ou libre.
La plupart des figures figurant dans la présente norme illustrent un type particulier de tour mais les modes opératoires décrits sont applicables a toutes les tours.
Un essai global est prévu afin de démontrer que la modélisation adoptée dans l'analyse est suffisamment précise et prudente.
La présente Norme européenne ne s'applique pas aux tours fabriquées avec des tubes et des raccords : il est prévu que ces dernieres soient calculées conformément au prEN 12812.
La présente Norme européenne spécifie deux méthodes d'analyse, la premiere par la théorie du premier ordre, la seconde par la théorie du second ordre, pour l'établissement des actions qui peuvent etre supportées par les tours d'étaiement.
NOTE Pour les définitions et les exigences relatives aux structures et aux matériaux composant la structure, les spécifications et les charges, voir le prEN 12812.
Oprema za začasne gradnje – Nosilni stolpi iz predizdelanih elementov – Posebne metode dimenzioniranja
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Temporäre Konstruktionen für Bauwerke - Stützentürme aus vorgefertigten Bauteilen - Besondere BemessungsverfahrenEquipements temporaires de chantiers - Tours d'étaiement en composants préfabriqués - Méthodes particulieres de calcul des structuresTemporary works equipment - Load bearing towers of prefabricated components - Particular methods of structural design91.220Gradbena opremaConstruction equipmentICS:Ta slovenski standard je istoveten z:EN 12813:2004SIST EN 12813:2004en01-oktober-2004SIST EN 12813:2004SLOVENSKI
STANDARD
SIST EN 12813:2004
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12813June 2004ICS 91.220English versionTemporary works equipment - Load bearing towers ofprefabricated components - Particular methods of structuraldesignEquipements temporaires de chantiers - Tours d'étaiementen composants préfabriqués - Méthodes particulières decalcul des structuresTemporäre Konstruktionen für Bauwerke - Stützentürmeaus vorgefertigten Bauteilen - BesondereBemessungsverfahrenThis European Standard was approved by CEN on 4 December 2003.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© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12813:2004: ESIST EN 12813:2004
EN 12813:2004 (E) 2 Contents Page 1 Scope.5 2 Normative references.5 3 Terms and definitions.5 4 Symbols.8 5 General information needed for structural analysis of a load bearing tower made in prefabricated components.9 6 Analysis methods for the design resistance of a tower.9 6.1 Cases to be analysed.9 6.2 Curve to be established for case 1a.10 6.3 Examination methods.11 1.4 Detail tests and global tests.11 7 The result for the calculated and experimental results shall be such that no calculated value is greater than the corresponding experimental value. Documentation relating to the test.12 8 The test report shall be in accordance with clause 9 of EN 12811-3:2002. Documentation to be provided.12 8.1 General.12 8.2 Information for the user.12 8.3 Information for the falsework designer.12 Annex A (informative)
Procedure for analysis by first order theory of a fully triangulated load bearing tower.13 A.1 Example chosen.13 A.2 Determination of the buckling load, Fcr for one face of the tower.13 A.3 Structural analysis by first order theory.13 Annex B (normative)
Global test procedure.15 B.1 Introduction.15 B.2 Apparatus.15 B.3 Choice of components.15 B.4 Assembly of test tower.15 B.5 Test procedure.17 B.6 Data to be recorded.17 B.7 Additional requirements when a horizontal load is also applied.17
SIST EN 12813:2004
EN 12813:2004 (E) 3 Foreword This document (EN 12813:2004) has been prepared by Technical Committee CEN/TC 053 “Temporary works equipment”, 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 December 2004, and conflicting national standards shall be withdrawn at the latest by December 2004. Annex A is informative, annex B is normative. This document includes a bibliography. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: 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.
SIST EN 12813:2004
EN 12813:2004 (E) 4
Introduction This European Standard is intended to provide information for those who specify load bearing towers made from prefabricated components and for the designer who has to prepare a scheme for their use. This European Standard will be of interest to those who wish to develop particular items, or groups of items for load bearing towers of prefabricated components. This European Standard describes how to establish structural data for load bearing towers made from prefabricated components.
Most of the figures illustrating the standard are of a particular type of tower but the procedures described are applicable to all towers. There is a requirement for a global test to demonstrate that the modelling adopted in the analysis is sufficiently accurate and on the conservative side. For materials this standard refers only to valid European Standards. However a large stock of equipment made of materials conforming to standards no longer valid is in use. This standard does not cover the use of this equipment. NOTE This European Standard does not give information on site activities nor about safety requirements, for which reference should be made to E.C. directives, and national documents. SIST EN 12813:2004
EN 12813:2004 (E) 5 1 Scope This European Standard describes methods for establishing structural data for stiffness and resistance by calculation supported by tests for load bearing towers made of prefabricated components of steel or aluminium alloy. The vertical load capacity is established, both with or without horizontal loads and with the top
restrained or free. This European Standard specifies two methods of analysis, by
first order theory, or by
second order theory. NOTE For definitions and requirements relating to structures and materials of the structure, specifications and loads, see EN 12812. The European Standard is not intended for towers constructed with tubes and couplers: it is expected that they will be designed in accordance with EN 12812. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). ENV 1993-1-1, Eurocode 3 —- Design of steel structures — Part 1-1: General rules and rules for buildings. ENV 1999-1-1, Eurocode 9 — Design of aluminium structures Part 1-1: General rules - General rules and rules for buildings. EN 12810-2, Façade scaffolds made of prefabricated components — Part 2: Particular methods of structural design EN 12811-2, Temporary works equipment - Part 2: Information on materials. EN 12811-3:2002, Temporary works equipment - Part 3: Load testing. EN 12812:2004, Falsework —
Performance requirements and general design.
3 Terms and definitions For the purposes of this European Standard, the terms an definitions of EN 12812 and the following apply. 3.1 base plate plate used for spreading the load in a standard over a greater area
3.2 base jack base plate which has means of vertical adjustment NOTE It is intended to be positioned at the base of an upright. It usually incorporates a base plate. SIST EN 12813:2004
EN 12813:2004 (E) 6 3.3 bracing component or components to increase stiffness and to provide greater vertical and lateral strength NOTE In the horizontal plane this may comprise frames, platforms, or rigid linkages between the uprights. In the vertical plane the usual methods include closed frames, with or without gussets, open frames, ladder frames with open access, rigid assemblies between horizontal members and uprights, and diagonals.
3.4 fork head "U" shaped component for holding a beam NOTE It is intended to be positioned at the top of an upright for locating and supporting a horizontal beam. 3.5 frame component which has at least one horizontal element permanently fixed to at least one upright element
3.6 fully triangulated load bearing tower tower in which a diagonal member is attached to each panel including either braced or unbraced jacks (see Figures 1a, 1b, 2) NOTE A panel is bounded by two adjacent vertical and two adjacent horizontal members. The diagonals are considered to create full triangulation to each vertical plane, if they are attached within 200 mm of each node point. 3.7 head jack screw device both able to adjust height and to release the tower from the loading. NOTE It is intended to be positioned at the top of an upright. It usually incorporates a fork head. 3.8 horizontal member component forming a horizontal connection between two uprights.
NOTE An upright may either be the vertical linear element of frames, or vertical components of a modular system. 3.9 load bearing tower tower with three or more uprights made of prefabricated steel or aluminium alloy components NOTE The components are principally linear members or frames. 3.10 loading beam horizontal member positioned above the primary beams onto which the vertical imposed test load is centrally applied 3.11 not fully triangulated load bearing tower tower in which not all vertical planes are fully
triangulated (see Figures 3a, 3b) 3.12 prefabricated component discrete part of a tower with permanently fixed connection devices which pre-determine dimensions SIST EN 12813:2004
EN 12813:2004 (E) 7 3.13 primary beam lowest horizontal beam distributing load at the top of a tower 3.14 storey part of the tower comprised between two consecutive horizontal planes 3.15
upright vertical load bearing element
a) with braced head jacks b) with unbraced jacks Figure 1 — Examples of fully triangulated towers
Figure 2 — Eccentricity "e" of the diagonals to members SIST EN 12813:2004
EN 12813:2004 (E) 8
a) with braced head jacks b) with unbraced jacks Figure 3 — Examples of not fully triangulated towers 4 Symbols Table 1 — Symbols Number Symbol Denomination Unit 1 A Cross-sectional area mm² 2 d Horizontal displacement mm 3 e Eccentricity mm 4 E Longitudinal modulus of
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