Tiêu chuẩn iso 22477 10 2016

Table 4 — Rapid load test transduce and signal proces ing displacement req irementsRang > 0mm or D/ 10, whichever is gre ter Befor an aft er each lo d cycle, thelevel of the pie head sha

Geotechnical investigation and

Part 10:

Reco n issanc et e ssais g ote h iques — Essais de structure s

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© ISO 2016, P blshed in Sw itz rlan

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written permis ion Permis ion c n be req esed from either ISO at the ad r es below or ISO’s member bod y in the c u try of

F reword i v

Introduction v

1 Sc ope 1

2 Nor mati ve r eferenc es 1

3 Terms, definitio s and symbols 2

3.1 Te msan definitions 2

3.2 Symb ls 3

4 Testing equipment 4

4.1 General 4

4.2 L ading 4

4.3 Measur ement 5

5 Test pr oc edure 7

5.1 Pr eparation for tes ing 7

5.2 Safety an integ rity r eq ir ements 8

5.2.1 Peo le an eq ipment in the surr oun ing ar ea 8

5.2.2 Tes pie 8

5.3 Pr eparation of the pie 8

5.4 General pr ep ration for tes ing 9

5.5 Wor king pi e integ rity afe testing 9

6 Test results 9

7 Test rep r ting 10

A nne x A (informative) A nal ysis of rapid load test r esults 12

Biblog raphy 23

ISO (he Int ernational Org nization for Stan ardization) is a worldwidefede ation of national s an ards

b dies (ISO membe b dies) The work of pr p ring Int ernational Stan ards is normaly car ied out

through ISO t ech ical committ ees Each membe b dy int er st ed in a subje t for w hich a t ech ical

committ ee has be n es a lshed has the right t o be r pr sent ed on that committ ee Int ernational

org nizations, g ove nmental an non-g ove nmental, in laison with ISO, also take part in the work

ISO cola orat es closely with the Int ernational Ele trot ech ical C mmis ion (IEC) on al matt ers of

ele trot ech ical s an ardization

The proc d r s used t o develo this document an those int en ed for it furthe maint enanc ar

desc ibed in the ISO/IEC Dir ctives, Part 1 In p rticular the dife ent a pro al c it eria ne ded for the

dife ent ty es of ISO document should be not ed This document was draft ed in ac ordanc with the

edit orial rules of the ISO/IEC Dir ctives, Part 2 ( e www.iso.org dir ctives)

A tt ention is drawn t o the p s ibi ity that some of the element of this document ma be the subje t of

p t ent right ISO shal not be held r sp nsible for identifying any or al such p t ent right Detais of

any p t ent right identified d ring the develo ment of the document wi be in the Introd ction an / r

on the ISO ls of p t ent de larations r c ived ( e www.iso.org p t ent )

Any trade name used in this document is information given for the convenienc of use s an does not

cons itut e an en orsement

For an ex lanation on the meaning of ISO spe ific terms an ex r s ions r lat ed to conformity as es ment,

as wel as information a out ISO’s adhe enc to the Wor ld Trade Org nization (WTO) principles in the

Te h ical Bar ie s to Trade (TBT) se the folowing URL: www.iso.org iso/ for word.html

ISO 2 47 -1 was pr par d b the E ro ean Committ ee for Stan ardization (CEN) in cola oration

with ISO Te hnical C mmitt ee TC 1 2, G eotechnic s , in ac ordanc with the Agr ement on t ech ical

co pe ation betwe n ISO an CEN (V ienna Agr ement)

A ls of al p rt in the ISO 2 47 se ies, publ shed un e the g ene al title G eotechnic al in es tig tion a d

tes tin — Tes tin o geotechnic al s truc tur s , can be fou d on the ISO websit e

This p rt of ISO 2 47 outl nes how a ra id lo d pie t es is def ined an spe if ies the eq ipment an

t es ing proc d r s r q ir d Informative, non-pr sc iptive guidanc is inclu ed on the analy sis of ra id

lo d pi e t es r sult r q ir d t o det ermine mo i sed or ultimat e compr s ive r sis anc of a pi e

Geotechnical investigation and testing — Testing of

Part 10:

This p rt of ISO 2 47 es a lshes the spe ifications for the ex ecution of ra id lo d pie t es s in w hich

a single pie is subje t t o an a ial lo d in compr s ion t o measur it lo d-displac ment beha iour

un e ra id lo ding an t o alow an as es ment of it measur d compr s ive r sis anc (R

c,m) an

cor esp n ing lo d-displac ment beha iour

This part of ISO 2 47 is a plca le t o pies lo ded a ial y in compr s ion

Al pie ty es mentioned in EN 1 3 , EN 1 6 9 an EN 141 9 ar co e ed b this part of ISO 2 47

The t es s in this p rt of ISO 2 47 ar lmit ed t o ra id lo d piet es s only

NOTE 1 T is part of ISO 2 477 can b used in conju ction with EN 1 97– Numerical values of partial fact or

for limit stat es from pile lo d t ests to b taken into ac ou t in design are provided in EN 1 97– For design t o

EN 1 97– , the results from rapid lo d pile testing wil b considered eq ivalent t o the me sured compres ive

resistance, R

c,m

, af er b ing subject t o ap ropriate analysis

NOT 2 Guidance on analysis of the rapid lo d testing results to determine me sured compres ive resistance

an cor espon ing lo d-displacement b haviour is given in An e A

This part of ISO 2 47 pro ides spe if ications for the folowing:

a) inves ig tion t es s, w he eb a sac ificial t es pieis lo ded up t o ultimat e l mit tat e;

b ) control tes s, whe eby the pi e is loaded up to a spe ified lo d in exc s of the se vic a i ity

l mit s ate

NOTE 3 General y,an investig tion test ocuses on g neral k owledg of a pile ty e; a control t est focuses on

one specif ic ap lication of a pile

2 Normati ve r eferences

The folowing document ar r fe r d t o in the t ext in such a wa that some or al of their cont ent

cons itut es r q ir ment of this document F or dat ed r fe enc s, only the edition cit ed a ples F or

un at ed r fe enc s, the lat es edition of the r fe enc d document ( inclu ing any amen ment ) a ples

The e ar no normative r fe enc s in this document

3 Terms, definitions and symbols

3.1 Terms and definitions

F or the purposes ofthis document, the t ermsan def initions given in EN1 9 -1 an the folowing a ply

ISO an IEC maintain t erminolo ical data ases for use in s an ardization at the folowing ad r s es:

— IECEle tro edia: a aia le at ht p:/ www.ele tro edia.org

— ISO Onlnebrow sing plat orm:a ai a le at ht p:/ www.iso.org o p

3.1.1

trial pie

pie ins aled befor the commenc ment of the main pi ing works or a spe ific part of the works for

the purp se of inves ig ting the suita i ity of the chosen ty e of pie an for conf irming it design,

dimensions an bearing r sis anc

Not e 1t o entry: T e trialpile might b sac if iced t o achieve ultimate limit state

pie t o w hich lo ds ar a pled t o det ermine the r sis anc deformation charact eris ics of the pi e an

the sur oun ing groun

Not e 1t o entry: A t est pile can b a trial pie (3.1.1), or a wo kin pie (3.1.2)

for e a pled t o the pie in a contin ously inc easing an then de r asing man e of a suita le d ration

( y icaly les than 1s) r lative t o the natural pe iod of the pi e w hich causes the pie t o compr s o e

the ful length and translat e a pro imat ely as a unit d ring the ful lo ding pe iod

3.1.6

maximum compres ive load

ma imum a ial compr s ive lo d (or for e) a pled t o the pie d ring the t es , g ene aly defined prior

t o thet es

3.1 7

rapid load test

pie lo ding t es w he e a pie is subje t ed t o chosen a ial ra id lo d (3.1.5) at the pie head for the

analysis of it ca acity

3.1.8

ultimate me sured compres ive resistance of a pie

cor esp n ing s at e in w hich the pie foun ation displac s significantly with negl gible inc ease of

r sis anc

Not e 1 to entry: Where it is diff icult t o def ine an ultimat e limit state from a lo d set lement plot showing a

contin ous slight inc e se, a set lement of the pile top eq al to 1 % of the pile b se diameter should b adopted

as the “failure” c iterion

Note 2 to entry: The ma imum compres ive resistance me sured d ring a r pid lo d tes (3.1.7)is not neces arily

eq al t o the ultimat e me sured compres ive resistance of a pile T e me sured resistance o tained from rapid

lo d t esting must b analysed t o remove the efects of inertia an soil depen ent b haviour b fore it can b

considered eq ivalent t o the ultimat e me sured compres ive resistance as outlined in An e A

3.1 9

design compres ive static resistance of a pi e

ultimat e compr s ive s atic r sis anc of a pie that shal be det ermined prior t o lo d t es ing t o alow

spe if ication of a pro riat e ma nitu e ra id lo d tes t (3.1.7) cycles

3.1.1

equivalent diameter

diamet er of an eq iv lent cir le of w hich the ar a eq alsthe ar a of the r lev nt pie se tion

Note 1 to entry: The eq ivalent diamet er for a cir ular pile is the outer diameter of the pile, for a sq are pile the

diameter which gives the same are as the sq are pile (as long as the long st side is smal er than 1,5 times the

short est side)is the eq ivalent diameter

3.1.1

minimum reference separatio distance

dis anc w hich sep rat es a s ationary r fe enc p int from a p int that wi be significantly displac d

b the t es ing method

Note 1 to entry: Only stationary points can b used for reference of di s plac eme t (3.1.1 ) me surement devices

Displacement me suring systems can b placed on the soil outside the reference distance without isolating

(displacement compensating)me sures

velocity of the shear wa e in the groun

D diamet er or eq iv lent diamet er of the t es pi e

ma imum compr s ive lo d

g ac ele ation d e t o gra ity

L t otal length of the t es pie

d ration of the ra id lo d a plcation

t d ration of the fal ing of the mas for a fal ing mas eq ipment

w pie displac ment

If information on the ultimat e compr s ive r sis anc of the pie is one of the aims of the t es , the

eq ipment shal ha e enough ca acity t o r ach the ultimat e compr s ive r sis anc un e ra id lo ding

The for e a pled t o the pie head d ring a ra id lo d t es for measuring the ultimat e compr s ive

r sis anc might ex ce d the design compr s ive s atic r sis anc of a pie b a fact or of two t o thr e

d e t o soi spe ific rat e efe t The ne d t o a ply such high lo ds shal be conside ed w hen spe ifying

eq ipment an pie mat erials

If for a ra id lo d t es one or mor of the r q ir ment mentioned in this p rt of ISO 2 47 is not met,

it should be pro en that this short coming has no influenc on the achievement of the o je tives of the

t es , befor the r sult can be int erpr t ed as a ra id lo d t es

F or long pies w he e the c it eria in F ormula (1)is ex ce ded or w he e rock socket r sult in non-uniform

s rains within the pie, embed ed pie ins rumentation an spe ialz d analy sis wi l be r q ir d

A dditional ins rumentation should conform t o 4.3

Ra id lo d t es ing sy st ems r ly on a mas t o a ply lo d t o a pi e This is eithe through lau ching a mas

upwards, r fe r d t o as a la unched mas syst em, or b dro ping a mas , r fe r d t o as a dro mas

sy st em In b th cases, theupward or the downward mo ement of the mas is controled t o prod c the

r q ir d lo d d ration in 4.1 To a oid e c ntric lo ding of pies an ad itional safety conside ations,

the mo ement of the mas should be guided d ring lau ched mas t es ing and dro mas t es ing

The sele tion of the lo ding eq ipment hal take int o ac ou t the folowing:

— aim of the t est ;

— grou d con itions;

— ma imum pi e lo d ( F

c ,ma);

— s r ngth of the pie (mat erial);

— ex ecution of the t est ;

— safety conside ations

The lo ding eq ipment shal g ene at e a for e w hich fulf ils the r q ir ment in 4.1 an is a le t o

a ply the r q ir d ma imum compr s ive for e t o mo i iz a spe if ied compr s ive r sis anc or the

ultimat e compr s ive r sis anc of a pie

If a t es pi e is t est ed b seve al cycles begin ing with a low ma nitu e for e cycle, the ma imum

for e of each proc eding cycle should be larg er than the ma imum for e of the pr c ding cycle Whe e

cycles of lo ding ar a pled, this should be u de taken in a man e that r mo es the p t ential for

uncontroled r lo ding of the pie This wi l r q ir the devic t o ha e a mas cat ching me hanism

The eq ipment shal lo d the pie ac urat ely along the dir ction of the pie a is The e c ntricity of the

lo d shal be les than 1 % of the eq iv lent diamet er The deviation or e c ntricity of the algnment

of the for e t o the a is of the pi e shal be les than 2 mm/m Ec entric lo ding of the pie is alowed

w he e this has be n spe ificaly al owed for d ring pie design an it has be n ve if ied that this wi not

un uly efe t the pe formanc of the t es ing eq ipment

The s r s in the pie u de the ma imum a pl ed lo d shal not ex ce d the pe mis ible s r s of the

piemat erial

Prior t o a ra id lo d t es , two v ria les shal be dir ctly measur d w he e the r action mas comes int o

contact with the pie head prior t o t es ing (not r q ir d for al eq ipment ty es):

— thefor e a pled t o thepie head;

— thedisplac ment of the pie head;

During a ra id lo d t es , a minimum of thr e v ria les shal bedir ctly measur d r lative t o time ():

— thefor e a pled t o thepie head ( F

c);

— the displac ment of the pie head (w);

— the ac ele ation of the pie head (a)

The transd c rs an signal proc s ing shal satis y the r q ir ment from Ta le 1, Ta le 2, Ta le 3 an

Ta le 4 Samplng shal commenc a minimum of 5 ms befor lo ding commenc s an contin e for a

minimum d ration of 5 0 ms Whe e d ration ofthe lo ding event means that the d ration of samplng

ex ce ds 5 0 ms, the d ration of samplng shal be inc eased t o ca tur the entir event an alow for

the r q ir d p s event sampl ng Al transd c r samplng shal be synchronised The transd c rs shal

ha e sufficient measuring rang e, in orde t o a oid r -adjus ment d ring t es ing Al ins rumentation

mus be a le t o withs an pie ins alation an t es ing proc d r s

Table 1 — Rapid load test transducer and signal proces ing g eneral requirements

S mpling rat e ≥4 0 0samples per secon

Duration of pre-event sampling ≥ 0 ms

Duration of post-event sampling ≥ 0 ms

C t of freq ency low pas f ilter ≥ kHz

Table 2 — Rapid load test load transduce and signal proces ing load requirements

Ma imum lo d >ma imum test lo d

Line rity < % of ma imum value re ched

Hysteresis < % of ma imum value re ched

Table 3 — Rapid load test ac eleratio transduce and signal proces ing requirements

Table 4 — Rapid load test transduce and signal proces ing displacement req irements

Rang > 0mm or D/ 10, whichever is gre ter

Befor an aft er each lo d cycle, thelevel of the pie head shal be det ermined r lative t o a p int out ide

of the minimum r fe enc sep ration dis anc b o tical level ng The o tical level ing measur ment

shal be controled b r fe enc t o one or mor f ix ed r fe enc p int and should be un e taken t o an

ac uracy of ± mm

The b se of a t es displac ment measuring sy st em (w he e this is plac d on the grou d surfac ) should

not be plac d close than the minimum r fe enc sep ration dis anc from the pie This shal be

ve if ied at the t es sit e If the minimum r fe enc sep ration dis anc for a t es displac ment measuring

sy st em can ot be r ached or vibration-fr e measur ment cannot be un e taken, the t es displac ment

measuring sy st em should be plac d on or fix ed t o a vibration-fr e surfac such as an adjac nt pie

The minimum r fe enc sep ration dis anc shal be measur d from

— thepie, w hen the t es is u de taken with a lau ched mas , or

— sup orting component of the eq ipment w hich is near s the pie, w hen the t es is u de taken with

a fal ng mas

The v lue of the minimum r fe enc separation dis anc should be a minimum of 1 m an

— eq al t o or gr at er than the dis anc w hich the shear wa esin thesoi tra el d ring the d ration of

thelo ding (

f, w hen the t es is u de taken with a lau ched mas , th s r

— eq al t o or gr at er than the dis anc w hich the shear wa es in the soi tra el d ring the d ration of

the fal ing of the mas (

g)an the subseq ent lo ding (

f, w hen the t es is u de taken with a fal ng

The lo d a pled t o the pie shal be det ermined dir ctly b a purp se buit calbrat ed lo d c l w hich

does not form p rt of the pie The use of pie mou t ed s rain ga ug es t o de ive ext ernaly a pled lo ds

for st eel or pr cas conc et e pies shal only be conside ed in spe ial cir ums anc s w he e a lo d c l

is u a ai a le an the s ifnes of the pie mat erial is k own from man factur r’ s c rtif ication or has

be n ve if ied dir ctly through mat erial element t es ing for the pies un e t es F or cas insitu conc et e

pi es, a purp se bui t calbrat ed lo d c l should be used or w he e pi e mou t ed s rain g ug es t o de ive

ext ernaly a pled lo ds ar used, these should be calbrat ed a ains lo d c l r adings for the spe ific

pi es un e t es

Surfac mou t ed s rain ga ug es should be mou t ed in diametricaly o p sed p irs Whe e embed ed

s rain ga ug es ar used t o complment t es r sult or w he e the c it eria ex ce ds in F ormula (1), s rain

g ug es or s rain g ug e devic s should be f ix ed t o the r infor ement b rs or embed ed in the conc et e

of conc et e pies or at ached t o the wals of st eel pies at leas in diametrical y o posed p irs at each

depth t o be conside ed Whe e s rain g ug e devic s ar cas in conc et e, it is advised that a minimum

of thr e devic s should be used at each depth t o be conside ed To det ermine lo d from s rain, the c os

se tion and the pi e mat erial mod lus ofelas icity shal be as es ed Al the mat erials pr sent in the pi e

shal be conside ed in this det ermination

NOTE 1 Strain-transd cer b sed u on vibrating wire tech olo y are g neraly not suita le for rapid lo d t est

monitoring an strain g ug b sed instruments are prefer ed

Al lo ding and set lement (as a r sult of lo ding larg er than 1 % of the ex e t ed s atic bearing ca acity

of the pi e) aft er ins al ation of the pie shal be measur d This inclu esal ty es of s atic pr lo ding of

the pie In ad ition, any ad itional eq ipment or comp nent p rt of the lo ding sy st em con e t ed t o

or in contact with the pie d ring the a plcation of lo d that can t o contribut e the ine tial r sis anc

of the pi e shal be of k own mas The mas ofthis ad itional eq ipment or component p rt mus be

r corded as p rt of the pie t es ing r sult

Al eq ipment used for measuring lo d, displac ment an ac ele ation in the t es shal be calbrat ed

The eq ipment shal be che ked on a r gular b sis The r sult of these che ks shal be r gist er d an

kept with the mos r c nt calbration This data shal be made a aia le prior t o commenc ment of the

t es Whe e a plca le, the lo d measur ment devic should be calbrat ed a ains a suita le mast er

devic giving ful trac a i ity

NOTE 2 Calibration of the lo d me surement device can b done ac ording t o a National Stan ard or ISO 75 0

The time betwe n the che ks and calbrations is not pr sc ibed, sinc the d ration ofv ldity of a

calbration can depen on the ty e of measur ment devic an man factur rs’ r commen ations

Howeve , che ks should be sufficiently detai ed that it can be ve if ied that al measur ment devic s

ar o e ating cor e tly d ring the t es It is pr fe r d that al che ks ar car ied out dir ctly befor

the t es t o a oid influenc of transport an time In some cir ums anc s, e.g fr q ent use or chang e of

comp nent or pr sumed damag e, ad itional cal bration an che king might be r q ir d

5.1 Preparation for testing

In adv nc of the t es , an ex ecution plan shal be formulat ed that is consist ent with the planned f inal

r p rt shown in Clause 7 The plan shal inclu e the folowing:

— t es o je tives;

— thegroun an groun wat er con itions with r fe enc t o the r lev nt sit e inves ig tion r p rt ;

— sched led t es ing dat e;

— t op gra hic locations, ty es an spe if ications of thet es pies;

— alowa le ma imum v lues of lo d an displac ment of the pie();

— r q ir d pie displac ment and a pl ed lo d;

— spe ification of the lo ding devic ;

— spe ifications of the measur ment devic san cal bration c rtificat es, if a plca le;

— spe ifications of ad itional measur ment-devic s;

— n mbe of lo ding st eps an targ et ma imum lo d pe st ep;

— ve if ication of the ac epta i ity of the r q ir d pie displac ment an a pled lo d with r spe t t o

thealowa le ma imum v lues;

— d ration of t es cycle measur ment an samplng fr q ency;

— plan of the t es sit e;

— t es ing pro ramme;

— l s of key pe sonnel, showing w ho is r sp nsible for supe vision, safety, t es ex ecution, data

r cording an othe tasks;

— safety r q ir ment ;

— leg ly r q ir d l c nc s for eq ipment han l ng, w he e r lev n

— lo is ical r q ir ment on sit e (for ex mple, flat grou d, vehicle r q ir ment an l mitations,

l f ing plan, working spac arou d the pie, et c )

It is r commen ed that the ex ecution plan is made a aia le at leas seven day s prior t o commenc ment

of t es ing

5.2 S fety and integ r ity requirements

5.2.1 P eo le and equipment in the surr ounding area

Safety of pe son el an eq ipment in the sur ou ding ar a shal be given d e conside ation d ring

ex ecution of the t es The dis anc betwe n the near s pe son an the t es eq ipment shal be at leas

twic the height of the t es eq ipment measur d from grou d level

Peo le in neighb uring buidings that ar l kely t o be afe t ed b t es ing shal be informed of the natur

of t es ing an the pro ramme of t es s t o be u de taken

Dis urb nc t o vibration sensitive proc s es in neighb uring buidings should be pr vent ed w he e

p s ible Whe e t es ing is u de taken close t o exis ing buidings, conside ation should be given t o the

ag e, int egrity an sensitivity of the s ructur

5.2.2 Test pie

The t es pie should be designed, man factur d and ins aled such that the t es pie should not be

damag ed b the ma imum lo d that wi bea pled d ring the t es pie

During a ra id lo d t es , the t es pie can be lo ded with a for e w hich might ex ce d the s atic eq iv lent

t es lo ds b a fact or of two or mor Tes pi es should be designed t o withs an the r sulting highe

compr s ive s r s es

F or working pies, the ma imum displac ment of the pie head shal be a r ed befor commenc ment

of the t es The displac ment of the pie head shal not ex ce d 1 % of the (eq iv lent) diamet er un e

normal cir ums anc swithout prior a pro al from al p rties conc rned

5.3 Preparation of the pi e

The pie head shal be flat, plane an pe pen icular t o the pi e a is

The int egrity an ca acity of thepie shal be suff icient t o car y the plan ed t es lo d If ins al ation of

the pie has raised doubt a out pie int egrity, the pie shal be t est ed acous icaly or b othe means, or

the ra id lo d t es shal be car ied out b multiple st eps with inc easing pie lo d

NOTE Concerns a out the int egrity of a pile can b d e t o u e pected b haviour d ring construction,

such as deviation away from anticipated b haviour in terms of driving resistance, amou t of conc ete used an

pro res d ring dril ing T e deviation could b a deviation from e pected values or a deviation of a specif ic pile

from other piles construct ed at he construction site or similar site

The t es pie shal have enough length a o e the groun surfac t o at ach the measur ment devic s Al

ac ele ation transd c rs shal be ins aled f irmly a ains or on the pie head an clearly visible

Betwe n the ins al ation of the t es pi e an the begin ing of the t es , adeq at e time shal be alowed t o

ensur that the r q ir d s r ngth of the piemat erial is achieved an the groun has sufficient time t o

r co e from the proc s of pie ins alation an dis ipation of p r -wat er pr s ur s an othe aspe t ,

such as me hanical heat from boring or hardening conc et e During this pe iod, the pie shal not be

dis urbed b lo d, imp ct or vibration, or othe ext ernal influenc

Time pe iods betwe n ins alation an t es ing of a pie should be taken from Ta le 5 Alt ernative time

pe iods can be spe ified with a pro riat e jus ification

Table 5 — Time periods betwe n instal ation and testing of a pi e

N TE Alternative time periods c n be spe if ied with ap ropriate jus if ic tion

5.4 General pr eparation for testing

S nsitive p rt of the t es eq ipment shal be prot ect ed from weathe (rain, win , dir ct su lght) an

othe dis urb nc

Al comp nent of the sy st em shal be prot ect ed a ains damag e d ring al s ag es of cons ruction an

t es ing Spe ial att ention shal be paid t o ca les

Any othe sit e activities that might influenc the measur ment , e.g vibrations b nearb traff ic or

ong oing pi e driving, should be a oided w he e p s ible Alt ernatively, t es ing should be timed t o a oid

pe iods of signif icant sit e o e ations

5.5 Wor king pi e integ rity afer testing

The pie shal be t est ed acous icaly if the pie int egrity is q es ioned as a r sult of the pie lo d t es

NOTE Concerns a out he int egrity of a pile can b d e to u e pected b haviour d ring rapid lo d t esting

Concern could arise d e t o a deviation from e pect ed values or a deviation of a specif ic pile from other piles

tested at the construction sit e or similar site

6 Test r esults

The t es r sult shal r cord the folowing time-b sed measur ment , w he e a common b se t o al time

measur ment shal be a pled:

— for e a pled b the lo ding sy st em at the pie head as a function of time;

— displac ment of the pie head as a fu ction of time;

— ac ele ation of the pie head as a fu ction of time

Al measur d t es r sult shal be a aia le in hard co y chart an digitaly in a r ada le t ext-b sed

format immediat ely aft er t es ing Al r sult shal be cor e t ed for calbration fact orsan pr sent ed in

engine ring unit C l bration cor e tions a pled t o the measur d signals shal be r corded in writing

an within the digital data r cords Measur d r sult in engine ring u it should be made a aia le in

o en ac es format, such as ASCI , prior t o any furthe analy sis

The measur ment of pie levels b in epen ent o tical measur ment befor and aft er each cycle shal

be r port ed Al othe r adings, such as local sit e t empe atur , t es s on conc et e samples, o itical level

r adings, pie g eometry, adjac nt s atic t es s on the sit e, w hen r lev nt, shal also be r corded in the

t es r p rt

The ra id lo d for e-set lement dia ram shal be drawn This dia ram show s the measur d pie head

displac ment a ains the measur d pi e head for e, without cor e tion Whe e multiple cycles of lo ding

ar a pled t o a single pie, in ivid al for e-set lement dia rams for each cycle should be pr sent ed In

ad ition, a single dia ram should be prod c d w hich combines al of the in ivid al for e-set lement