DIN EN 14199-2015 Execution of special geotechnical work - Micropiles German version EN 14199 2015《特殊岩土工程施工 微型桩 德文版本EN 14199-2015》.pdf

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1、July 2015 Translation by DIN-Sprachendienst.English price group 22No 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).ICS 9

2、3.020!%D8z“2332187www.din.deDDIN EN 14199Execution of special geotechnical works Micropiles;English version EN 14199:2015,English translation of DIN EN 14199:2015-07Ausfhrung von Arbeiten im Spezialtiefbau Mikropfhle;Englische Fassung EN 14199:2015,Englische bersetzung von DIN EN 14199:2015-07Excuti

3、on des travaux gotechniques spciaux Micropieux;Version anglaise EN 14199:2015,Traduction anglaise de DIN EN 14199:2015-07SupersedesDIN EN 14199:2012-01www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 64 pages 06.15 DIN EN 14199:2015-07 2

4、 A comma is used as the decimal marker. National foreword This document (EN 14199:2015) 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 was the DIN-Normenausschuss Bauw

5、esen (DIN Standards Committee Building and Civil Engineering), Working Committee NA 005-05-07 AA Baugrund; Pfhle (SpA zu CEN/TC 288/WG 16 sowie CEN/TC 341/WG 4 und 7). Amendments This standard differs from DIN EN 14199:2012-01 as follows: a) driven piles independent of dimensions have been included;

6、 b) clauses concerning concrete and testing have been shortened; c) EN 14199:2015 has been harmonized with EN 1536. Previous editions DIN 4128: 1983-04 DIN EN 14199: 2005-05, 2012-01 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14199 May 2015 ICS 93.020 Supersedes EN 14199:2005English Versio

7、n Execution of special geotechnical works - Micropiles Excution des travaux gotechniques spciaux - Micropieux Ausfhrung von Arbeiten im Spezialtiefbau - Mikropfhle This European Standard was approved by CEN on 12 March 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations w

8、hich 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 application to the CEN-CENELEC Management Centre or to any CEN member. This

9、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 CEN-CENELEC Management Centre has the same status as the official versions. CEN member

10、s are the national standards bodies 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

11、, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form

12、and by any means reserved worldwide for CEN national Members. Ref. No. EN 14199:2015 EEN 14199:2015 (E) 2 Contents Page Foreword 4 1 Scope 5 2 Normative references 6 3 Terms and definitions .7 4 Information needed for the execution of the works 11 4.1 General . 11 4.2 Special features 12 4.3 List of

13、 activities . 13 5 Geotechnical investigation 13 5.1 General . 13 5.2 Specific requirements 14 6 Materials and products 15 6.1 General . 15 6.2 Reinforcement and load bearing elements 15 6.2.1 Steel for reinforcement 15 6.2.2 Steel for load bearing elements 15 6.2.3 Other materials or grades of stee

14、l 16 6.3 Materials for grout, mortar and concrete . 16 6.3.1 Cement . 16 6.3.2 Aggregates 16 6.3.3 Water 16 6.3.4 Additions and admixtures 16 6.4 Grout 16 6.5 Mortar and concrete . 17 6.6 Spacers, centralisers and other components 17 6.7 Coatings and corrosion protection compounds . 18 7 Considerati

15、ons related to design 18 7.1 General . 18 7.2 Geometrical construction tolerances . 19 7.3 Installation . 19 7.4 Reinforcement and load bearing elements 19 7.5 Connecting elements . 20 7.6 Corrosion protection of steel elements 20 7.7 Spacers and centralisers . 21 7.8 Micropile enlargement 21 7.9 Co

16、nnections to the superstructure . 22 7.10 Spacing of micropiles 22 7.11 Special requirements for micropiles. 22 8 Execution . 22 8.1 General . 22 8.2 Construction tolerances 23 8.3 Site preparation . 23 8.4 Sequence of installation 24 8.5 Drilling 24 8.5.1 General . 24 8.5.2 Use of flushing 25 DIN E

17、N 14199:2015-07 EN 14199:2015 (E) 3 8.5.3 Boreholes supported by casings . 25 8.5.4 Drilling with segmental hollow stem augers 25 8.6 Enlargements . 25 8.7 Reinforcement and load bearing elements . 26 8.7.1 Handling and storing . 26 8.7.2 Joints 26 8.7.3 Spacers and centralisers 27 8.7.4 Installatio

18、n 27 8.8 Filling and grouting . 27 8.8.1 General . 27 8.8.2 Grout preparation 28 8.8.3 Borehole testing and pregrouting . 28 8.8.4 Filling the borehole . 28 8.8.5 Filling or grouting through a temporary casing . 28 8.8.6 Filling or grouting through a load bearing element . 29 8.8.7 Grouting during d

19、rilling 29 8.8.8 Multi-stage grouting 29 8.9 Concreting 29 8.9.1 Concreting in submerged conditions 29 8.9.2 Concreting through a segmental hollow stem augers 29 8.9.3 Concreting in dry conditions . 30 8.10 Trimming of micropiles . 31 9 Supervision, monitoring and testing . 32 9.1 Supervision 32 9.2

20、 Monitoring of micropile construction 32 9.3 Micropile testing 33 9.3.1 General . 33 9.3.2 Static load tests . 33 9.3.3 Dynamic load tests 34 9.3.4 Low strain integrity tests 34 10 Records 35 10.1 General . 35 10.2 Records for the execution of construction micropiles 35 10.3 Records for micropile te

21、sts 37 11 Special requirements 38 Annex A (informative) Execution methods of micropiles . 51 Annex B (informative) Guidance on minimum cover (in mm) for bearing element of low strength steel for cast in situ micropiles 52 Annex C (informative) Borehole testing and pregrouting . 53 Annex D (informati

22、ve) Guideline for a record for micropiles . 54 Annex E (informative) Degree of obligation of the provisions . 55 Bibliography 62 DIN EN 14199:2015-07 EN 14199:2015 (E) 4 Foreword This document (EN 14199:2015) has been prepared by Technical Committee CEN/TC 288 “Execution of special geotechnical work

23、s”, 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 latest by November 2015, and conflicting national standards shall be withdrawn at the latest by November 2015.

24、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 such patent rights. This document supersedes EN 14199:2005. The technical changes in comparison to EN 1419

25、9:2005 are: Driven piles are excluded from EN 14199 and transferred to EN 12699; sections describing concrete and testing have been minimised; EN 14199:2015 has been harmonized with EN 1536. The general scope of CEN/TC 288 is the standardization of the execution procedures for geotechnical works, in

26、cluding testing and control methods, and the required material properties. WG 16 has been charged with the subject area of micropiles. This document has been prepared to stand alongside EN 1997-1. Clause 7 of this Standard covers design aspects of micropiles. According to the CEN/CENELEC Internal Re

27、gulations, the national standards organisations 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, France, Germany, Greece, Hungary, Iceland, Ireland,

28、 Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 14199:2015-07 EN 14199:2015(E)5 1 Scope 1.1 This European Standard establishes general principles for the execution of m

29、icropiles. They are for drilled piles constructed using a drilling tool with a diameter less than 300 mm. NOTE 1 This European Standard is not applicable to driven piles, the execution of which is governed by EN 12699. NOTE 2 For a definition of shaft diameter see 3.3. 1.2 Micropiles are structural

30、members to transfer actions to the ground and can contain bearing elements to transfer directly or indirectly loads and or to limit deformations. For examples of micropiles see Figure 1, Figure 2 and Figure 3. Their shaft and base resistance can be improved (mostly by grouting) and they can be const

31、ructed with (see Figure 4): uniform cross section (straight shaft); or telescopically changing shaft dimensions; shaft enlargements; and/or base enlargement. 1.3 Other than practical considerations, there are no limitations regarding, length, inclination (definition of inclination, see Figure 5), sl

32、enderness ratio or shaft and base enlargements. 1.4 The provisions of this European Standard apply to (see Figure 6): single micropiles; micropile groups; reticulated micropiles; micropile walls. 1.5 The material of micropiles covered by this European Standard can be: steel or other reinforcement ma

33、terials; grout, mortar or concrete; a combination of above. 1.6 Micropiles can be used for: working under restricted access and/or headroom conditions; foundations of new structures (particularly in very heterogeneous soil or rock formations); reinforcing or strengthening of existing structures to i

34、ncrease the capacity to transfer load to depth with acceptable load settlement characteristics, e.g. underpinning works; reducing settlements and/or displacements; forming a retaining wall; DIN EN 14199:2015-07 EN 14199:2015 (E) 6 reinforcing of soil to form a bearing and/or retaining structure; imp

35、roving slope stability; securing against uplift; other applications where micropile techniques are appropriate. 1.7 Deep mixing columns according to EN 14679 are not included in this European Standard. Columns constructed by jet grouting are covered by EN 12716. Ground anchors are covered by EN 1537

36、. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any ame

37、ndments) applies. EN 206:2013, Concrete - Specification, performance, production and conformity EN 445, Grout for prestressing tendons - Test methods EN 447:2007, Grout for prestressing tendons - Basic requirements EN 934-2, Admixtures for concrete, mortar and grout Part 2: Concrete admixtures Defin

38、itions, requirements, conformity, marking and labelling EN 1090-2, Execution of steel structures and aluminium structures Part 2: Technical requirements for steel structures EN 1536:2010, Execution of special geotechnical work - Bored piles EN 1990, Eurocode - Basis of structural design EN 1991 (all

39、 parts), Eurocode 1: Actions on structures EN 1992-1-1, Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for buildings EN 1993 (all parts), Eurocode 3: Design of steel structures EN 1994-1-1, Eurocode 4: Design of composite steel and concrete structures Part 1-1: General

40、 rules and rules for buildings EN 1997-1:2004, Eurocode 7: Geotechnical design - Part 1: General rules EN 1997-2, Eurocode 7 - Geotechnical design - Part 2: Ground investigation and testing EN 10025 (all parts), Hot-rolled products of non-alloy structural steels EN 10080, Steel for the reinforcement

41、 of concrete - Weldable reinforcing steel - General prEN 10138-4:2001, Prestressing steels Part 4: Bars EN 10210 (all parts), Hot finished structural hollow sections of non-alloy and fine grain structural steels EN 10219 (all parts), Cold formed welded structural hollow sections of non-alloy and fin

42、e grain steels EN 12390-3, Testing hardened concrete - Part 3: Compressive strength of test specimens DINEN 14199:2015-07EN 14199:2015 (E) 7 EN 16228 (all parts), Drilling and foundation equipment Safety EN ISO 2560, Welding consumables - Covered electrodes for manual metal arc welding of non-alloy

43、and fine grain steels - Classification (ISO 2560) EN ISO 4063, Welding and allied processes - Nomenclature of processes and reference numbers (ISO 4063) EN ISO 5817, Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) - Quality levels for imperfections

44、(ISO 5817) EN ISO 9692-1, Welding and allied processes - Types of joint preparation - Part 1: Manual metal arc welding, gas-shielded metal arc welding, gas welding, TIG welding and beam welding of steels (ISO 9692-1) EN ISO 9692-2, Welding and allied processes - Joint preparation - Part 2: Submerged

45、 arc welding of steels (ISO 9692-2) EN ISO 11960, Petroleum and natural gas industries - Steel pipes for use as casing or tubing for wells (ISO 11960) EN ISO 14341, Welding consumables - Wire electrodes and weld deposits for gas shielded metal arc welding of non alloy and fine grain steels - Classif

46、ication (ISO 14341) EN ISO 15630-3, Steel for the reinforcement and prestressing of concrete - Test methods - Part 3: Prestressing steel (ISO 15630-3) EN ISO 15609-1, Specification and qualification of welding procedures for metallic materials - Welding procedure specification - Part 1: Arc welding

47、(ISO 15609-1) EN ISO 17632, Welding consumables - Tubular cored electrodes for gas shielded and non-gas shielded metal arc welding of non-alloy and fine grain steels - Classification (ISO 17632) EN ISO 17660-1, Welding - Welding of reinforcing steel - Part 1: Load-bearing welded joints (ISO 17660-1)

48、 EN ISO 18276, Welding consumables - Tubular cored electrodes for gas-shielded and non-gas-shielded metal arc welding of high-strength steels - Classification (ISO 18276) prEN ISO 22477-1:2014, Geotechnical investigation and testing Testing of geotechnical structures Part 1: Pile load test by static axially loaded compression (ISO/DIS 22477-1:2014) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 micropile fr: micropieu de: Mikrop