1、Adjustable telescopic steel props Product specifications, design and assessment by calculation and tests Enalish version of DIN EN 1065 ICs 91.220 Descriptors: Building materials, steel props, testing. DIN EN 1065 - Supersedes DIN 4424, June 1987 edition. Bausttzen aus Stahl mit Ausziehvorrichtung -
2、 Produktfestlegungen, Bemessung und Nachweis durch Berechnung und Versuche European Standard EN 1065 : 1998 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been prepared by CEN/TC 53. The responsible German body involved in its preparation
3、 was the Normenausschu Bauwesen (Building and Civil Engineering Standards Committee). This standard is largely based on DIN 4424. Amendments DIN 4424, June 1987 edition, has been superseded by the specifications of EN 1065. Previous edition DIN 4424: 1987-06. I No pari of this standard may be reprod
4、uced without the prior permission of Ref. No. DIN EN 1065: 1998-12 IN Deutsches Institut fur Normung e. V., Berlin. euth Verlag GmbH, D-i0772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen). English pricegroup 12 Sales No. 1112 05.99 EUROPEAN STANDARD NORME EUROPENNE EUROPI
5、SCHE NORM EN 1065 September 1998 ICs 91.220 Descriptors: Building materials, steel props, testing. English version Adjustable telescopic steel props Product specifications, design and assessment by calculation and tests Etais tlescopiques rglables en acier- Spcifications du produit, conception et va
6、luation par calculs et essais Bausttzen aus Stahl mit Ausziehvor- richtung - Produktfestlegungen, Bemessung und Nachweis durch Berechnung und Versuche This European Standard was approved by CEN on 1998-06-1 O. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate t
7、he 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 stand- ards may be obtained on application to the Central Secretariat or to any CEN member. The European Standards exist
8、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 the same status as the official versions. CEN members are the national standards bodies
9、 of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komit
10、ee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 1998. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN 1065 : 1998 E Page 2 EN 1065 : 1998 Contents Page Foreword 3 Introduction 3 1 scope . 3 2 Normative re
11、ferences . 4 3 Definitions and symbols . 6 4 Classification 8 5 Designation . 9 6 Materials . 9 6.1 General 9 6.3 Corrosion protection 10 6.2 Modification by cold working 9 7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.9 7.10 7.8 Configuration . 10 Tubes . 10 Welding 11 Permanent prevention against unintentional
12、disengagement . 12 Endplates . 13 Anti hand trap 15 Length adjustment device . 11 Props with fixed forkheads 13 Minimum extended length . 15 Overlapping length 16 Data required from the manufacturer 16 8 Nominal characteristic strength 16 9 Verification . 16 9.1 General 16 9.2 Verification of the ac
13、tual characteristic strength by calculation 17 9.3 Verification of the actual characteristic strength by testing 20 9.4 Verification of the strength of adjustment device . 21 9.5 Verification of the prevention against unintentional disengagement 21 10 Test methods 21 10.1 General 21 10.2 Test method
14、 for the prop strength 22 10.3 Test of a pin and its supports . 25 10.4 Test of the prevention against unintentional disengagement . 26 11 Testrepo rt 26 12 Marking 27 Annex A (normative) Equations for the calculation of the structural properties of tubes . 28 Annex B (normative) Calculation of resi
15、stance for pin connections . 30 Annex C (normative) Statistical evaluation of data 31 Annex D (informative) Prototype assessment 32 Page 3 EN 1065: 1998 Foreword This European Standard has been prepared by Technical Committee CENRC 53 “Temporary works equipment”, the secretariat of which is held by
16、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 March 1999, and conflicting national standards shall be withdrawn at the latest by March 1999. According to the CENKENELEC Internal Regulations
17、, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United
18、Kingdom. introduction Whilst this European Standard deals with the more common types of adjustable telescopic steel props in use, it is not intended to prevent development of other types of props. For example, props may have hinged ends or other length adjustment devices or be made of other material
19、s. Whilst such props cannot comply with this European Standard it is recommended that the principals of this European Standard be considered in the design and assessment of such props. The characteristic strengths values specified in this European Standard form a reference level which is unsafe for
20、direct site use. It is a matter for a separate European Standard to relate these characteristic strengths to safe site usage by applying suitable partial safety factors yM and yF. It is also a matter for a separate European Standard to specify the required level of corrosion protection and inspectio
21、n. This European Standard is a product standard primarily for use in the field of falsework and formwork. In cases where the prop is an integral part of a system of soffit support, other design and assessment procedures may be more appropriate or even necessary. This European Standard gives a number
22、 of alternatives, a designation of which is given in clause 5. 1 scope This European Standard specifies materials, design requirements, corrosion protection alternatives together with assessment methods using both calculations and testing for open thread and covered thread adjustable telescopic stee
23、l props which are intended for use on construction sites (see figure 1). It specifies five classes of nominal characteristic strengths for adjustable telescopic steel props each having a series of maximum extended lengths. Each having differing endplate configuration. This European Standard does not
24、 apply to adjustable props of different materials or construction, nor does it provide any information concerning the use of adjustable steel props. Page 4 EN 1065 : 1998 .I a) Open thread (= DO) b) 1 Endplate 2 Outer tube 3 Innertube 4 Len th adustment device 4.1 Afached pin (see 7.3.6) 4.2 Collar
25、nut 4.3 Handle 5 Central hole 6 Connection holes 7 Pin hole X a) 4. Covered thread (= DC) Figure 1 : Adjustable telescopic steel prop 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at
26、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 t
27、he publication referred to applies. EN 74 Couplers, loose spigots and base-plates for use in working scaffolds and falsework made of steel tubes - Requirements and test procedures EN 729-2 Quality requirements for welding - Fusion welding of metallic materials - Part 2: Comprehensive quality require
28、ments EN 1562 Founding - Malleable cast irons EN 1563 Founding - Spheroidal graphite cast irons EN 10002-1 Tensile testing of metallic materials - Method of test at ambient temperature EN 10025 Hot rolled products of non-alloy structural steels - Technical delivery conditions EN 10083-1 Quenched and
29、 tempered steels - Part 1: Technical delivery conditions for special steels Page 5 EN 1065 : 1998 EN 10083-2 Quenched and tempered steels - Part 2: Technical delivery conditions for unalloyed quality steels EN 10083-3 Quenched and tempered steels - Part 3: Technical delivery conditions for boron ste
30、els EN 10113-1 Hot-rolled products in weldable fine grain structural steels - Pari 1 : General delivery conditions EN 10113-2 Hot-rolled products in weldable fine grain structural steels - Part 2: Delivery conditions for normalized/ normalized rolled steels EN 10113-3 Hot-rolled products in weldable
31、 fine grain structural steels - Part 3: Delivery conditions for thermomechanical rolled steels EN 10155 Structural steels with improved atmospheric corrosion resistance - Technical delivery conditions EN 10204 : 1991 Metallic products - Types of inspection documents EN 10210-1 Hot finished structura
32、l hollow sections of non-alloy and fine grain structural steels - Part 1: Technical delivery requirements EN 10210-2 Hot finished structural hollow sections of non-alloy and fine grain structural steels - Part 2: Tolerances, dimensions and sectional properties EN 10219-1 Cold formed structural hollo
33、w sections of non-alloy and fine grain structural steels - Part 1 : Technical delivery requi rements EN 10219-2 Cold formed structural hollow sections of non-alloy and fine grain structural steels - Part 2: Tolerances, dimensions and sectional properties prEN 39 Steel tubes for tube and coupler scaf
34、fold structures - Technical delivery conditions ENV 1993-1-1 Eurocode 3: Design of steel structures - Part 1-1 : General rules and rules for buildings EN IS0 9001 Quality systems - Model for quality assurance in design, development, production, installation and servicing (IS0 9001) EN IS0 9002 Quali
35、ty systems - Model for quality assurance in production, installation and servicing (IS0 9002) IS0 2937 Plain end seamless steel tubes for mechanical application IS0 3304 Plain end seamless precision steel tubes - Technical conditions for delivery IS0 3305 Plain end welded precision steel tubes - Tec
36、hnical conditions for delivery Page 6 EN 1065 : 1998 IS0 3306 Plain end as-welded and sized precision steel tubes - Technical conditions for delivery 3 Definitions and symbols For the purposes of this European Standard the following definitions and symbols apply. 3.1 adjustable telescopic steel prop
37、: Compression member normally used as temporary vertical support in construction works. A prop consists of two tubes which are telescopically displaceable within each other. A prop has a coarse adjustment with a pin inserted into holes in the inner tube and a means of fine adjustment using a threade
38、d collar (see figure 1). 3.2 endplate: Plate which is fixed at right angles to one end of inner or outer tube 3.3 forkhead: Endplate with lateral projections to locate a beam. 3.4 collar nut: Nut which incorporates at least one handle and has one face which supports the pin and is internally threade
39、d to provide fine length adjustment to the prop. 3.5 inner tube: The smaller diameter tube provided with holes for the coarse adjustment of the prop 3.6 outer tube: The larger diameter tube one end of which is threaded externally. 3.7 length adjustment device: Device consisting of a pin, collar nut,
40、 holes in the inner tube and a threaded outer tube. NOTE: The forces from the endplate are transferred to the pin inserted in the inner tube holes and to the collar nut which transfers the forces to the outer tube thread. In some prop designs an additional loose washer is used between the pin and th
41、e collar nut. 3.8 pin: The part of the length adjustment device which is inserted through the inner tube holes and is secured to the prop. 3.9 length at maximum extension: The distance measured between the outside faces of the endplates when the prop is in the fully extended position. NOTE: The prop
42、 extension is called “fully open“ if the pin is in the hole farthest away from the inner tube endplate and the collar nut is in the uppermost position. The prop extension is called “fully closed“ if the pin is in the hole nearest the inner tube endplate and the collar nut is in the lowest position.
43、3.10 main symbols: Symbols are given in table 1. Page 7 EN 1065 : 1998 Dl D, Table 1: Main symbols Outer diameter of the inner tube Collar nut major thread diameter mm mm Number b- 4 eb,core eb, 15 Diameter of the pin mm Eccentricity at the base at which the spring becomes effective mm Limit eccentr
44、icity at the base mm I fY f, I l7 Yield strength N/mm2 Actual yield strength N/mm2 I 2 /, 1, Mo, t% 24 Length of a prop at maximum extension Overlapping length mm Plastic moment resistance of the cross section m kN x m I 27 Nc 1 NpI N, Mm Symbol I Ideal buckling force kN Plastic compression resistan
45、ce of the cross section kN Nominal plastic compression resistance of the cross section kN Designation Rb, Rs, R I Unit I Bearing resistance of the tube Shear resistance of the pin Failure load of a test kN kN kN Ry,ad Ry,k V Ava YM yMi, yM2 YF Actual characteristic strength of the prop class y where
46、 y corresponds to class A, B, C, D or E Nominal characteristic strength of the prop class y where y corresponds to classes A, B, C, D or E Vertical load kN Angle of inclination between the inner and outer tube rad 1 1 1 kN kN Partial safety factor for the Splitted partial safety factors for the mate
47、rial Partial safety factor for the action resistance eb, I Initial eccentricity at the base 1 e, I Eccentricity at the top I rnm I 1 Nominal yield strength I N/mm2 I / I Actual extention length of the prop I m I M, I Reduced plastic moment resistance of the cross section I kNxm I N I Normal (axial)
48、force I kN I Nt I Normal (axial) force of the tube I kN R I Strength of a prop I kN I Page 8 EN 1065 : 1998 4 Classification An adjustable telescopic steel prop shall be classified according to its nominal characteristic strength Ry,k and its maximum length l, given in table 2. For classes A, B and
49、C props the nominal characteristic strength given in table 2 shall apply to the maximum extension length. For classes D and E props the nominal characteristic strength given in table 2 shall apply to all possible extension lengths. Table 2: Classification A 35 B 25 B 30 B 35 B 40 B 45 B 50 B 55 C 25 C 30 c 35 C 40 c 45 C 50 c 55 D 25 D 30 D 35 D 40 D 45 D 50 D 55 E 25 E 30 E 35 E 40 E 45 E 50 E 55 Length at maximum extension Nominal characteristic strength (sec clause 8) RY,k kN 2,50 3,OO 3.50 4,OO 20,4 17,O 14,6 12,8 2,50 3,OO 3.50 4,OO 430 5,OO 550
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