1、Translation by DIN-Sprachendienst.English price group 20No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen). www.din.dewww.
2、beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 49 pages09.15October 2015ICS 93.020!%FmT“2357449DIN EN 1538Execution of special geotechnical work Diaphragm walls;English version EN 1538:2010+A1:2015,English translation of DIN EN 1538:2015-1
3、0Ausfhrung von Arbeiten im Spezialtiefbau Schlitzwnde;Englische Fassung EN 1538:2010+A1:2015,Englische bersetzung von DIN EN 1538:2015-10Excution des travaux gotechniques spciaux Parois moules;Version anglaise EN 1538:2010+A1:2015,Traduction anglaise de DIN EN 1538:2015-10SupersedesDIN EN 1538:20101
4、2DDIN EN 1538:2015-10 2 A comma is used as the decimal marker. National foreword This document (EN 1538:2010+A1:2015) has been prepared by Technical Committee CEN/TC 288 “Execution of special geotechnical works” (Secretariat: AFNOR, France). The responsible German body involved in its preparation wa
5、s the DIN-Normenausschuss Bauwesen (DIN Standards Committee Building and Civil Engineering), Working Committee NA 005-05-13 AA Schlitzwnde. Amendments This standard differs from DIN EN 1538:2010-12 as follows: a) Amendment A1:2015 has been incorporated; b) the standard has been editorially revised;
6、c) the German translation has been revised in parts. Previous editions DIN 4126: 1984-01, 1986-08 DIN EN 1538: 2000-07, 2010-12 EN 1538:2010+A1June 2015 ICS 93.020 Supersedes EN 1538:2010English Version Execution of special geotechnical work - Diaphragm walls Excution des travaux gotechniques spciau
7、x - Parois moules Ausfhrung von Arbeiten im Spezialtiefbau - SchlitzwndeThis European Standard was approved by CEN on 2 July 2010 and includes Amendment 1 approved by CEN on 17 April 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for gi
8、ving 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 CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three of
9、ficial 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies
10、of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain
11、, Sweden, Switzerland, Turkey and United Kingdom. CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1538:2010+A1:2015 EEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE N
12、ORMEUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGEN 1538:2010+A1:2015 (E) Contents Page Foreword . 4 1 Scope 5 2 Normative references . 7 3 Terms and definitions . 8 4 Information needed for the execution of the work 10 4.1 General . 10 4.2 Special
13、 features . 10 5 Geotechnical investigation 11 5.1 General . 11 5.2 Specific requirements . 12 6 Materials and products . 13 6.1 Constituents 13 6.1.1 General . 13 6.1.2 Bentonite 13 6.1.3 Polymers 13 6.1.4 Cement . 13 6.1.5 Aggregates. 14 6.1.6 Water 14 6.1.7 Additions 14 6.1.8 Admixtures. 14 6.2 S
14、upport fluids 14 6.2.1 Bentonite suspensions . 14 6.2.2 Polymer solutions . 15 6.2.3 Fresh hardening slurries 16 6.3 Concrete . 16 6.3.1 General . 16 6.3.2 Aggregates. 16 6.3.3 Cement contents . 16 6.3.4 Water/cement ratio 16 6.3.5 Admixtures. 16 6.3.6 Fresh concrete 17 6.3.7 Sampling and testing on
15、 site . 17 6.4 Plastic concrete . 17 6.5 Hardening slurry . 18 6.6 Reinforcement . 18 6.7 Additional inserted products . 19 7 Considerations related to design 19 7.1 General . 19 7.2 Panel stability 20 7.2.1 General considerations 20 7.2.2 General principle of design 20 7.2.3 Comparable experience 2
16、0 7.2.4 Stability considerations 21 7.2.5 Trial excavation(s) . 21 7.3 Socketing into rock . 21 7.4 Precast concrete panels . 22 7.5 Reinforcement cages 22 7.5.1 General considerations 22 7.5.2 Design principles 22 7.5.3 Vertical reinforcement 23 7.5.4 Horizontal reinforcement 23 7.5.5 Multiple cage
17、s and joints . 23 DIN EN 1538:2015-1027.6 Recesses and perforations 24 7.7 Minimum and nominal cover . 24 8 Execution . 24 8.1 Construction phases 24 8.2 Construction tolerances 25 8.2.1 Panel. 25 8.2.2 Retaining walls 25 8.2.3 Cut-off walls 26 8.2.4 Reinforcement cage 26 8.3 Preliminary works . 26
18、8.3.1 Working platform 26 8.3.2 Guide-walls 26 8.4 Excavation . 27 8.4.1 Supporting the walls of the excavation 27 8.4.2 Excavation sequence . 28 8.4.3 Loss of support fluid 28 8.5 Cleaning the excavation . 28 8.6 Forming the joints . 28 8.7 Placing the reinforcement or other elements 29 8.8 Concret
19、ing and trimming . 29 8.8.1 General . 29 8.8.2 Concreting in dry conditions . 30 8.8.3 Concreting under support fluid . 30 8.8.4 Loss of immersion of tremie pipe . 31 8.8.5 Trimming 31 9 Supervision, testing and monitoring 31 10 Records 32 11 Special requirements 32 Annex A (informative) Glossary 34
20、 Annex B (informative) Control schedules during the execution . 36 Annex C (informative) Sample concreting record forms for diaphragm walls 42 Annex D (informative) Degree of obligation of the provisions 43 Bibliography . 47 EN 1538:2010+A1:2015 (E)DIN EN 1538:2015-103Foreword This document (EN 1538
21、:2010+A1:2015) has been prepared by Technical Committee CEN/TC 288 “Execution of special geotechnical works”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the lates
22、t by December 2015, and conflicting national standards shall be withdrawn at the latest by December 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all
23、such patent rights. This document supersedes !EN 1538:2010“. This document includes Amendment 1 approved by CEN on 2015-04-17. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. The general scope of TC 288 is the standardisation of the execution proc
24、edures for geotechnical works (including testing and control methods), and of the required material properties. WG15 has been charged to revise EN 1538:2000, with the subject area of both retaining and cut-off diaphragm walls. This standard does not address the execution of barrettes, which is cover
25、ed by EN 1536, Execution of special geotechnical work Bored piles. The design, planning and execution of retaining and cut-off diaphragm walls call for experience and knowledge in this specialised field. The execution phase requires skilled and qualified personnel and the present standard cannot rep
26、lace the expertise of specialist contractors. The document has been prepared to stand alongside EN 1997-1, Eurocode 7: Geotechnical design Part 1: General rules and EN 1997-2, Eurocode 7: Geotechnical design Part 2: Ground investigation and testing. This standard expands on design only where necessa
27、ry (e.g. the detailing of reinforcement) and provides full coverage of the construction and supervision requirements. #The amendment became necessary to accord the Standard EN 1538:2010 with EN 206:2013, Concrete Specification, performance, production and conformity. EN 206:2013 has been revised to
28、contain also the specific requirements for concrete for applications for special geotechnical works, making redundant respective provisions in EN 1538 (e.g. 6.1, 6.3 and 8.8). Full according with EN 13670, Execution of concrete structures is however still pending. EN 1538:2010+A1:2015 therefore stil
29、l contains specific requirements for bored piles as a concrete structure, such as the detailing of the reinforcement, the concrete placement and the supervision of concreting process which are complementing the provisions of EN 13670. In addition, some editorial corrections were made in this amended
30、 Standard.“ According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
31、 France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. EN 1538:2010+A1:2015 (E) DIN EN 1538:2015-1041 Scope This European Standard
32、 establishes general principles for the execution of diaphragm walls as either retaining walls or cut-off walls. NOTE 1 This standard covers only structures constructed in a trench excavated with a support fluid or in dry conditions, where soil is removed and replaced by concrete or slurry and with
33、wall thickness B 40 cm. NOTE 2 Diaphragm walls can be permanent or temporary structures. NOTE 3 The following types of structure are considered: a) retaining walls: usually constructed to support the sides of an excavation in the ground. They include: 1) cast in situ concrete diaphragm walls; 2) pre
34、cast concrete diaphragm walls; 3) reinforced slurry walls; b) cut-off walls: usually constructed to prevent migration of groundwater, clear or polluted, or of other contaminants present in the ground. They include: 1) slurry walls (possibly with membranes or sheet piles); 2) plastic concrete walls.
35、NOTE 4 Walls formed shallow vertical trenches (typically excavations with a ratio of depth over thickness D/B 5 or D 5 m) are not covered by this standard. EN 1538:2010+A1:2015 (E)DIN EN 1538:2015-105Key 1 Wall thickness (B) 7 Guide-wall 2 Horizontal length of reinforcement cage 8 Cut off level 3 Ca
36、ge width 9 Vertical length of reinforcement cage 4 Length of panel 10 Reinforcement cage 5 !Working platform level“ 11 Depth of excavation (D) 6 Casting level 12 Concave portion of curved joints Figure 1 Geometry of a panel EN 1538:2010+A1:2015 (E) DIN EN 1538:2015-106! “ Key P Primary S Secondary 1
37、 Starter 2 Intermediate 3 Closure Figure 2 Schematic examples of different types of panels and joints (plan view) 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 refere
38、nces, the latest edition of the referenced document (including any amendments) applies. !deleted text“ !EN 206:2013, Concrete Specification, performance, production and conformity“ EN 791, Drill rigs Safety !deleted text“ EN 1990, Eurocode Basis of structural design EN 1991 (all parts), Eurocode 1:
39、Actions on structures EN 1992 (all parts), Eurocode 2: Design of concrete structures EN 1997-1, Eurocode 7: Geotechnical design Part 1: General rules EN 1997-2, Eurocode 7 Geotechnical design Part 2: Ground investigation and testing EN 1998 (all parts), Eurocode 8: Design of structures for earthquak
40、e resistance EN 1538:2010+A1:2015 (E)DIN EN 1538:2015-107EN 10025-2, Hot rolled products of structural steels Part 2: Technical delivery conditions for non-alloy structural steels EN 10080, Steel for the reinforcement of concrete Weldable reinforcing steel General EN 10210 (all parts), Hot finished
41、structural hollow sections of non-alloy and fine grain steels EN 10219 (all parts), Cold formed welded structural hollow sections of non-alloy and fine grain steels EN 10248 (all parts), Hot rolled sheet piling of non alloy steels EN 10249 (all parts), Cold formed sheet piling of non alloy steels !d
42、eleted text“ EN 13670, Execution of concrete structures 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 cast in situ concrete diaphragm wall fr paroi moule en bton de Ortbetonschlitzwand wall made of plain or reinforced concrete, which is con
43、structed in a trench excavated in the ground NOTE The excavation is carried out in discrete length to form panels and the concrete is placed through tremie pipes immersed in the fresh concrete. In some cases the excavation and the concreting may be carried out in dry conditions. 3.2 plastic concrete
44、 wall fr paroi moule en bton plastique de Tonbetonschlitzwand wall made of plastic concrete, which is constructed in a trench in the ground NOTE The excavation is carried out in panels and the concrete is placed through tremie pipes most of the time immersed in a support fluid. In some cases the exc
45、avation and the concreting may be carried out in dry conditions. 3.3 precast concrete diaphragm wall fr paroi prfabrique en bton de Fertigteilschlitzwand wall made of precast elements which are lowered into a trench excavated in the ground containing a hardening slurry 3.4 reinforced slurry wall fr
46、paroi moule en coulis arm de bewehrte Einphasenschlitzwand wall made from a hardening slurry reinforced by steel beams, steel mesh or other suitable elements 3.5 slurry wall fr paroi moule en coulis de Einphasenschlitzwand wall made from a hardening slurry NOTE In most cases, the excavation is carri
47、ed out using a hardening slurry as the support fluid. Sealing elements such as membranes or sheetpiles may be inserted. EN 1538:2010+A1:2015 (E) DIN EN 1538:2015-1083.6 plastic concrete fr bton plastique de Tonbeton low strength, low Youngs modulus concrete capable of sustaining larger strains than
48、normal concrete NOTE It usually consists of low cement content concrete mixed at a high water cement ratio. It may include bentonite and/or other clay materials and/or other materials such as pulverized fuel ash (PFA) and admixtures. 3.7 hardening slurry fr coulis autodurcissant de selbsterhrtende S
49、uspension slurry which hardens with time NOTE The slurry is a suspension which contains cement or another binder, and additional materials such as clay (bentonite), ground granulated blast furnace slag (GGBFS) or pulverized fuel ash (PFA), fillers, sand and admixtures. Hardening slurries are generally used in the precast concrete diaphragm wall technique and for slurry walls. They serve as support fluid during excavation, and, together with the fines from the natural ground, form the final, hardened material. 3.8 guide-
