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1、BRITISH STANDARD BS EN 13331-2:2002 Trench lining systems Part 2: Assessment by calculation or test The European Standard EN 13331-2:2002 has the status of a British Standard ICS 93.020 ? Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 06:22:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN
2、 13331-2:2002 This British Standard, having been prepared under the direction of the Building and Civil Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 9 September 2002 BSI 9 September 2002 ISBN 0 580 40368 8 Natio
3、nal foreword This British Standard is the official English language version of EN 13331-2:2002. The UK participation in its preparation was entrusted by Technical Committee B/514, Access and support equipment, to Subcommittee B/514/WG29, Trench support systems, which has the responsibility to: A lis
4、t of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Stan
5、dards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standar
6、d does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European
7、developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publicat
8、ion Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 06:22:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13331-2 August 2002 ICS 93.020 English version Trench lining systems - Part 2: Assessment by calculation or test D
9、ispositifs de blindage de tranches - Partie 2: Evaluation par calculs ou essais Grabenverbaugerte - Teil 2: Nachweis durch Berechnung oder Prfung This European Standard was approved by CEN on 6 July 2002. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the c
10、onditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in thre
11、e official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austr
12、ia, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Manag
13、ement Centre: rue de Stassart, 36 B-1050 Brussels 2002 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13331-2:2002 E Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 06:22:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 1333
14、1-2:2002 (E) 2 Contents page Foreword3 Introduction.4 1Scope 4 2Normative references 4 3Terms and definitions4 4Symbols4 5General5 6Assessment by calculation.5 7Assessment by testing6 Bibliography7 Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 06:22:56 GMT+00:00 2006, Uncontrolled Copy, (c)
15、 BSI EN 13331-2:2002 (E) 3 Foreword This document (EN 13331-2:2002) has been prepared by Technical Committee CEN/TC 53 “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
16、text or by endorsement, at the latest by February 2003, and conflicting national standards shall be withdrawn at the latest by February 2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standa
17、rd: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. EN 13331 Trench lining systems consists of the following parts: ? Part 1: Product specificati
18、ons. ? Part 2: Assessment by calculation or test. These standards are to be read in conjunction with prEN 12811-2 and prEN 12811-3. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 06:22:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13331-2:2002 (E) 4 Introduction Trench lining systems are
19、intended to ensure the stability of vertical trench walls and to protect workers from the effects of collapse of trenches. Part 1 of the series deals with materials and specifications on the manufacture of trench lining systems. Part 2 of the series deals with the evaluation methods using both calcu
20、lations and tests for the trench lining systems. A trench lining system comprises a variety of components, which, when assembled, create trench support. The instruction manual provides all the necessary information on the safe use of trench lining systems. 1 Scope This European Standard specifies me
21、thods of calculation and tests to assess the conformity of trench lining systems with the requirements of EN 13331-1. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate
22、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
23、referred to applies (including amendments). EN 10002-1, Metallic materials - Tensile testing - Part 1: Method of test at ambient temperature. EN 10003-1, Metallic materials - Brinell hardness test - Part 1: Test method. EN 10204, Metallic products Types of inspection documents. prEN 12811-3:2001, Te
24、mporary works equipment - Scaffolds - Part 3: Load testing. EN 13331-1:2002, Trench lining systems Part 1: Product specifications. ENV 1993-1-1:1992, 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 - P
25、art 1-1: General rules - General rules and rules for buildings. 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 13331-1:2002 apply. 4 Symbols For the purposes of this European Standard, the symbols given in EN 13331-1:2002 apply. Licensed Cop
26、y: sheffieldun sheffieldun, na, Mon Oct 30 06:22:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13331-2:2002 (E) 5 5 General 5.1Structural configuration to be assessed A trench lining system shall be assessed under the structural configuration which will induce the most severe loading effects in t
27、he system components. All options for the assembly of components indicated in the instruction manual shall be assessed. For slide rail systems two configurations shall be considered: ? with panels on both sides; ? with panels on one side only. 5.2Loading configurations to be considered A trench lini
28、ng system shall be assessed under the configurations specified in EN 13331-1:2002, 7.1.1. 5.3Choice of testing or calculation 5.3.1Assessment shall be carried out by calculation in accordance with ENV 1993 for the bending resistance of all panels, slide rails, soldiers and supporting frames and the
29、structural capacity of the front pulling strut or pulling points of a drag box. 5.3.2Assessment shall be carried out by structural testing for the establishment of the compressive resistance of struts with variable length adjustment. 5.3.3Assessment shall be carried out by calculation or structural
30、testing for all other cases, i.e.: a) the tensile resistance of struts; b) the compressive resistance of struts with incremental length adjustment and non adjustable struts; c) deflections of panels and slide rails given in EN 13331-1:2002, 7.3; d) the moments of strut to panel or slide rail connect
31、ions required to be declared in EN 13331-1:2002, 7.6.4; e) the resistance of extracting, vertical connecting points and panel connectors in accordance with EN 13331-1:2002, 7.4.16. Where figures are declared that are based on tests not described in either prEN 12811-3 or this standard, the method us
32、ed shall be fully documented in accordance with prEN 12811-3. 6 Assessment by calculation Assessment by calculation of the requirements of EN 13331-1 shall be carried out as follows. For steel it shall be in accordance with ENV 1993-1-1 and for aluminium with ENV 1999-1-1. For cast iron, ENV 1993-1-
33、1 shall be used provided that the requirements of ENV 1993-1-1:1992, 3.2.2.2 are fulfilled. The internal forces and moments shall be calculated using elastic analysis methods, i.e. no plastic redistribution of moments and forces are permitted. The influence of the deflection on the internal forces a
34、nd moments shall be determined either by using second order analysis or by first order analysis combined with an indirect provision for second order effects. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 06:22:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13331-2:2002 (E) 6 7 Assessment
35、by testing 7.1General Unless otherwise stated in 7.2 and 7.3 structural testing shall follow the specifications given in prEN 12811-3. 7.2Examination of material properties The relevant materials properties shall be taken from 3.1.B certificates when available (in accordance with EN 10204). Hardness
36、 tests in accordance with EN 10003-1 shall be performed on 20 % of the components under test in order to confirm the type of material declared in the 3.1.B certificate. If 3.1.B certificates are not available, yield strength, tensile strength and fracture elongation shall be checked in tensile tests
37、 of relevant materials in accordance with EN 10002-1. 7.3Test procedure for struts with variable length adjustment 7.3.1Principle The strut samples are located in the test apparatus and force applied until failure occurs. Load and deflection data is recorded during the test to enable characteristic
38、compressive resistance to be determined from statistical analysis. 7.3.2Apparatus The test apparatus can be any calibrated universal hydraulic testing machine of appropriate dimensions capable of delivering in excess of the predicted failure force. 7.3.3Procedure a) Prior to any test, a force equal
39、to the estimated characteristic resistance divided by 2 shall be applied and then removed in order to bed down the test specimen onto the end plates of the test apparatus. b) Ideally struts should be mounted horizontally in the test apparatus, and placed on the appropriate sections of panel soldiers
40、 or slide rails. c) Where struts are tested in vertical position, a horizontal force representing half the weight of the strut shall be applied in the centre of the strut before and during the test. d) For each strut length, a minimum of three separate tests shall be carried out. For struts with mor
41、e than four extensions bars a minimum of three separate tests for four different lengths shall be conducted. Tests shall be conducted on the longest and the shortest strut lengths. Where only one characteristic strut resistance for a system is declared the tests shall be carried out on the longest s
42、trut length only. e) Structural tests shall be carried out with the threaded bars extended to their maximum length, any moving parts being turned back by a quarter of a turn. Nuts shall be placed in the most unfavourable position in which they can be used in the struts. f) Only fasteners and pins sp
43、ecified in the instruction manual shall be used to connect extension bars in the tests. The tightening torque specified in the instruction manual shall be applied. 7.4Evaluation of characteristic resistance from test results Calculations shall be in accordance with prEN 12811-3:2001, 10.2, 10.3, 10.
44、6, 10.7, 10.8 and 10.9. NOTEA worked example is given in prEN 12811-3:2001, annex B. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 06:22:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13331-2:2002 (E) 7 Bibliography prEN 12811-2, Temporary works equipment - Scaffolds - Part 2: Information
45、 on materials. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 06:22:56 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 13331-2:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It
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