1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 524-1 : 1997 The Eu
2、ropean Standard EN 524-1 : 1997 has the status of a British Standard ICS 77.140.75; 91.080.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Steel strip sheaths for prestressing tendons Test methods Part 1. Determination of shape and dimensionsThis British Standard, having be
3、en prepared under the direction of the Sector Board for Building and Civil Engineering, was published under the authority of the Standards Board and comes into effect on 15 November 1997 BSI 1997 ISBN 0 580 28666 5 BS EN 524-1 : 1997 Amendments issued since publication Amd. No. Date Text affected Na
4、tional foreword This British Standard is the English language version of EN 524-1 : 1997. The UK participation in its preparation was entrusted by Technical Committee B/525, Building and civil engineering structures, to Subcommittee B/525/2, Structural use of concrete, which has the responsibility t
5、o: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations repr
6、esented on this committee 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 Standards Catalogue under the section entitled International Standards Corresponde
7、nce Index, or by using the Find facility of the BSI Standards Electronic Catalogue. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, an EN title page, pages 2 to 4, an inside b
8、ack cover and a back cover.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 Copyright reserved to CEN members. Ref. No. EN 524-1 : 1997 E EUROPEAN STANDARD EN 524-1 NORME EURO
9、PE ENNE EUROPA ISCHE NORM March 1997 ICS 77.140.75; 91.080.40 Descriptors: Prestressed concretes, tubes, sheathing, prestressing steels, classifications, specification, verifications, marking English version Steel strip sheaths for prestressing tendons Test methods Part 1: Determination of shape and
10、 dimensions Gaines en feuillard dacier pour ca bles de pre contrainte Me thodes dessai Partie 1: De termination de la forme et des dimensions Hu llrohre aus Bandstahl fu r Spannglieder Pru fverfahren Teil 1: Ermittlung der Formen und Mae This European Standard was approved by CEN on 1997-01-27. CEN
11、members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions 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 appli
12、cation 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 translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has t
13、he same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 524-1 : 1997 BSI 1997 For
14、eword This European Standard has been prepared by Technical Committee CEN/TC 104, Concrete (performance, production, placing and compliance criteria), the Secretariat of which is held by DIN. This standard is a part of the series EN 524 Sheaths for prestressing tendons Test methods which additionall
15、y comprises the following Parts Part 2 Determination of flexural behaviour Part 3 To-and-fro bending test Part 4 Determination of lateral load resistance Part 5 Determination of tensile load resistance Part 6 Determination of leaktightness (Determination of water loss) These European standards apply
16、 to EN 523 Steel strip sheaths for prestressing tendons Terminology, requirements, quality control. 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 1997, and conflicting national standar
17、ds shall be withdrawn at the latest by September 1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Ital
18、y, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Apparatus and accuracy 3 4 Internal diameter, height of profile and wall thickness of sheaths 3 5 Relative volume of profile 3Page 3 EN 524-1
19、 : 1997 BSI 1997 1) It is recommended that the specimen length chosen is such that the specimen can be used for the other test. 1 Scope This European Standard specifies the procedure for determining the shape and dimensions of sheaths for prestressing tendons which comply with EN 523. 2 Normative re
20、ferences 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
21、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. EN 523 Steel strip sheaths for prestressing tendons Terminology, requirements, quality control 3 Apparatus and a
22、ccuracy A possible test device is shown in figure 2 The procedure to determine the relative volume of profile (V rel ) shall allow for an accuracy of 5 % Vernier calliper (accuracy of 0,1 mm) Micrometer gauge (accuracy of 0,01 mm) 4 Internal diameter, height of profile and wall thickness of sheaths
23、The internal diameter, d 1 , and the height of profile, h, shall be determined by means of a vernier calliper using the specimen described in clause 5. Measurements shall be taken at both ends of the specimen in two directions at right angles to one another (see figure 1) before the specimen is seal
24、ed. The mean values shall be calculated from the values obtained. The wall thickness shall be measured by a micrometer gauge at least at four different points. 5 Relative volume of profile A test specimen with a length of at least l = 500 mm 1) shall be sealed at one end so that it is watertight. Th
25、e total volume V tot of the hollow space inside the specimen shall be determined by filling the specimen with water and then measuring the content (see figure 2). The volume V ref and the surface area A ref of the reference cylinder shall be calculated from the mean internal diameter d 1 as describe
26、d in clause 4 and the length l of the test specimen. The relative volume of the profile (V rel ) measured in cm 3 /cm 2 is calculated using the following equation: V rel = V tot 2 V ref A ref where A ref (= p 3 d 1 3 l) is the surface area of the reference cylinder (in cm 2 ); V ref is the volume of
27、 the reference cylinder (in cm 3 ); V tot is the volume of water in the specimen (in cm 3 ). Figure 1. Internal diameter, height of profile and wall thickness of sheathsPage 4 EN 524-1 : 1997 BSI 1997 Figure 2. Test set-up for determining the total volumeblankBSI 389 Chiswick High Road London W4 4AL
28、 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution BSI is the
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