Grundlaget for fremtidens geoteknik · Grundlaget for fremtidens geoteknik CEN/TC 288 Execution of special geotechnical works ISO/TC 182-WG3: ... The current proposal for ISO/DIS

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Grundlaget for fremtidens geoteknikCEN/TC 288 Execution of special geotechnical works

ISO/TC 182-WG3: EN ISO 22477-5 Testing of grouted anchors - Status

NOM, April 2017

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TC 288 Execution of special geotechnical worksStatus of standards

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Reference Ver. Title DK titel Status Next Review Convenor DS publikation

EN 1536 2010 Bored piles Borede pæle +A1:2015 2020 3. udg., 2015-06-22

EN 1537 2013 Ground anchors Jordankre 2018 2. udg., 2013-07-29

EN 1538 2010 Diaphragm walls Slidsevægge +A1:2015 2020 3. udg., 2015-06-22

EN 12063 1999 Sheet-pile walls Spunsvægge WG19 (2016) no progress Hervé Duplaine 1. udg., 1999-03-31

EN 12699 2015 Displacement piles Fortrængningspæle 2020 2. udg., 2015-05-20

EN 12715 2000 Grouting Grouting WG18 (2014) Robert David Essler 1. udg., 2000-08-30

EN 12716 2001 Jet grouting Jet grouting WG17 (2013) Gebhard Dausch 1. udg., 2001-06-21

EN 14199 2015 Micro-Piles Minipæle 2020 2. udg., 2015-06-10

EN 14475 2006 Reinforced fill Armeret fylde (jord) confirmed 2016 2021 1. udg., 2006-12-19

EN 14490 2010 Soil nailing Jordsøm confirmed 2015 2020 1. udg., 2010-06-16

EN 14679 2005 Deep mixing Deep mixing confirmed 2014 2019 1. udg., 2005-11-30

EN 14731 2005 Deep vibration (*) Dybdevibration (*) confirmed 2014 2019 1. udg., 2006-02-24

EN 15237 2007 Vertical drainage Vertikalt dræn confirmed 2012 2017 1. udg., 2007-06-14

Dewatering (Grundvandssænkning) WG21 (2016) call for 2016-08-02

Ground freezing (Jordfrysning) WG20 (2016) call for 2016-08-02

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TC 288 Execution of special geotechnical worksStatus of standards

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NOTE

DOR Date of Ratification

DAV Date of Availability

DOA Date of Announcement

DOP Date of Publication

DOW Date of Withdrawal

Link to CEN https://standards.cen.eu/dyn/www/f?p=204:105:0:::::

EN 14731 (*) Ground treatment by deep vibration

Jordbearbejdning ved dybdevibration …. (Dybdekomprimering)

Next plenary meeting will be in Austria 29-30 June 2017

Caroline Reis, AFNOR is the secretary of CEN/TC 288

TC 288 Execution of special geotechnical worksEN 12063 Sheet-pile walls, CEN/TC 288/WG19 members (June 1015)

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Name Country E-mail Role Appointed by

Hervé Duplaine France [email protected] Convenor AFNOR + CEN/TC 288

Hervé Duplaine France [email protected] Committee member AFNOR

Frédéric Aury France [email protected] Committee member AFNOR

Marc Gratier France [email protected] Committee member AFNOR

David Baxter UK [email protected] Committee member BSI

Tommi Hakanen Finland [email protected] Committee member SFS

Pentti Salo Finland [email protected] Committee member SFS

Patrick Ijnsen Netherlands [email protected] Committee member NEN

Ole Møller Denmark [email protected] Committee member DS

Izabela Liero Germany [email protected] Document monitor DIN

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EN ISO 22477-5 Testing of grouted anchorsStatus after WG3 meeting in London 5-6 April 2017

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• Result of voting

• Definitions and terms

• Test methods

• Observation periods by S-tests on permanent anchors

in hard (Precambrian) rock

• Measuring of displacement

EN ISO 22477-5 Testing of grouted anchors

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EN ISO 22477-5 Testing of grouted anchorsResult of voting

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325 comments, of which 153 were resolved – or close to being resolved in London 5-6 April.

The general sections 1 to 7 + 23 comments concerning the section 8 (Test Method 1)

EN ISO 22477-5 Testing of grouted anchorsResult of voting

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CEN standarderNye afstemningsregler pr. 1. januar 2017

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Link fra DS’ hjemmeside: https://www.ds.dk/da/nyhedsarkiv/2017/1/cen-vedtager-nye-afstemningsregler

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Member countryCLC

Weighting

In

percentNew CEN

New

Weighting

EEA

country

Diffe-

rence

Relative increase of

influence

Germany 29 7,04% 13,35% 55,0 X 6,31% 89,66%

Turkey 2) 29 7,04% 12,52% 51,6 - 5,48% 77,87%

France 29 7,04% 10,91% 44,9 X 3,87% 55,00%

United Kingdom 29 7,04% 10,64% 43,8 X 3,60% 51,16%

Italy 29 7,04% 10,02% 41,3 X 2,98% 42,35%

Spain 27 6,55% 7,66% 31,6 X 1,11% 16,89%

Poland 27 6,55% 6,27% 25,8 X -0,28% -4,32%

Romania 14 3,40% 3,28% 13,5 X -0,12% -3,47%

Netherlands 13 3,16% 2,78% 11,5 X -0,38% -11,90%

Belgium 12 2,91% 1,85% 7,6 X -1,06% -36,48%

Greece 12 2,91% 1,79% 7,4 X -1,12% -38,54%

Czech Republic 12 2,91% 1,73% 7,1 X -1,18% -40,60%

Portugal 12 2,91% 1,71% 7,0 X -1,20% -41,29%

Hungary 12 2,91% 1,63% 6,7 X -1,28% -44,04%

Sweden 10 2,43% 1,60% 6,6 X -0,83% -34,08%

Austria 10 2,43% 1,41% 5,8 X -1,02% -41,91%

Switzerland 2) 10 2,43% 1,35% 5,6 - -1,08% -44,38%


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Member countryCLC

Weighting

In

percentNew CEN

New

Weighting

EEA

country

Diffe-

rence

Relative increase of

influence

Bulgaria 10 2,43% 1,19% 4,9 X -1,24% -50,97%

Serbia 7 1,70% 1,17% 4,8 - -0,53% -31,14%

Denmark 7 1,70% 0,93% 3,8 X -0,77% -45,26%

Finland 7 1,70% 0,90% 3,7 X -0,80% -47,03%

Slovakia 7 1,70% 0,89% 3,7 X -0,81% -47,62%

Norway 7 1,70% 0,85% 3,5 X -0,85% -49,97%

Ireland 7 1,70% 0,76% 3,1 X -0,94% -55,27%

Croatia 7 1,70% 0,70% 2,9 X -1,00% -58,80%

Lithuania 7 1,70% 0,48% 2,0 X -1,22% -71,75%

FYROM 2) 4 0,97% 0,34% 1,4 - -0,63% -64,98%

Slovenia 4 0,97% 0,34% 1,4 X -0,63% -64,98%

Latvia 4 0,97% 0,33% 1,4 X -0,64% -66,01%

Estonia 4 0,97% 0,22% 0,9 X -0,75% -77,34%

Cyprus 4 0,97% 0,19% 0,8 X -0,78% -80,43%

Luxembourg 4 0,97% 0,09% 0,4 X -0,88% -90,73%

Malta 3 0,73% 0,07% 0,3 X -0,66% -90,39%

Iceland 3 0,73% 0,05% 0,2 X -0,68% -93,13%

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Aktuel afstemning om EN ISO 22477-5


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Fiktiv afstemning om EN ISO 22477-5:

Sverige: JaTyskland: Nej

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EN ISO 22477-5 Testing of grouted anchorsDefinitions and terms

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anchorage point

anchor head

tendon head → tendon end

(by displacement measurement)

EN ISO 22477-5 Testing of grouted anchorsTest Methods

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France … voted no, because

• Method 2 is obsolete and it should be withdrawn (Ed: Test Method 2 = load loss method from UK)

• The Method “step load” is to be put in 1st method, because the method classically used for geotechnical structures (Ed: step load method = Test Method 3 from France)

• The new chapter 8 shall describe MLT (Maintained Load Test) and the new chapter 9 shall describe the CLT (Cyclic Load Test) .

• For simplification, the use of “MLT” and “CLT” to qualify these 2 methods instead of “TM 1” and “TM3” is more relevant and clearer.

WG3 decision: TM1, 2 and 3 are maintained.

TM2 (Load loss) should (still) be allowed for those countries, who are in favour. TM2 is recognised.

EN 1997-1/A1:2013 refers to TM1, 2 and 3 (in tables A.20 and A.21)

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EN ISO 22477-5 Testing of grouted anchorsObservation periods in hard rock

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Sweden … voted no, because

In Sweden the majority of the anchors are installed in Precambrian bedrock, and therefore slightly different/adjusted test methods/procedure are used. The current proposal for ISO/DIS 22477-5 does not take this into consideration. The standard must be modified to allow for national annex with modified methods adopted to the local geology.

For anchors in Precambrian bedrock the load cycles may be reduced by 50 %.

But only on permanent anchors by S-test (acc. to SE NA = TiIlämpningsdokument)

BSI (CEN + ISO secretariat): No National Annex is allowed


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From EN ISO 22477-5

50% of (15 + 15 + 30 + 30 + 60) = 75 minutes … for S-tests on 2% of the anchors (min. 3 pcs.)

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From SS 27104


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WG3 decision

NOTE 1: For the definition of fine and coarse soil refer to EN ISO 14688-1

NOTE 2: For permanent anchors in hard rock (Precambrian rock, identified by a compression strength of … MPa), the observation periods by S-tests can be reduced by 50 %.

Cycle Maximum load

Minimum observation period at maximum load (minutes)

Temporary anchor Permanent anchor

coarse soil and rock fine soilcoarse soil and

rockfine soil

0 Pa 1 1 1 1

1 0,40 Pp 1 1 15 15

2 0,55 Pp 1 1 15 15

3 0,70 Pp 5 5 30 60

4 0,85 Pp 5 5 30 60

5 1,00 Pp 30 60 60 180

The datum load Pa should be min. of 0,1 Pp, or 50 kN

Table 2 — Loading sequence for suitability test

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EN ISO 22477-5 Testing of grouted anchorsMeasurement of displacement

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Sweden

A-test

For anchors in Precambrian bedrock measurement with steel-ruler may be used.


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Sweden

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present EN ISO 22477-5

4.5 Displacement measurement

…

(3) The precision of the measuring equipment shall be 0.5 mm or better for displacement measurements, and 0.01 mm for creep monitoring.

WG3 decision: no change


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Precision Time Displacement Creep rate

∆t ∆s t1 t2 t2/t1 s1 s2 α αmax αmin

min mm min min mm mm mm mm mm

0,0167 0,01 2 5 2,5 10,00 10,20 0,50 0,56 0,45

0,0167 1 2 5 2,5 10,00 10,20 0,50 5,60 -4,47

0,0167 0,01 5 15 3 10,00 10,95 1,99 2,04 1,94

0,0167 1 5 15 3 10,00 10,95 1,99 6,21 -2,19

0,0167 0,01 10 20 2 10,00 10,60 1,99 2,07 1,92

0,0167 1 10 20 2 10,00 10,60 1,99 8,67 -4,63

0,0167 0,01 10 30 3 10,00 10,50 1,05 1,09 1,00

0,0167 1 10 30 3 10,00 10,50 1,05 5,25 -3,14

0,0167 1 1 10 10 10,00 11,00 1,00 3,02 -0,99

0,0167 1 1 20 20 10,00 12,00 1,54 3,09 0,00

[ ])/()(log

)()(

12

12max

tttt

ssss

∆+∆−

∆−−∆+=α

)/log( 12

12

tt

ss −=α

[ ])/()(log

)()(

12

12min

tttt

ssss

∆−∆+

∆+−∆−=α

Documents

Grundlaget for fremtidens geoteknik · Grundlaget for fremtidens geoteknik CEN/TC 288 Execution of special geotechnical works ISO/TC 182-WG3: ... The current proposal for ISO/DIS