Sph Bearing Draft(09.06.11)

7/23/2019 Sph Bearing Draft(09.06.11)

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DRAFT GUIDELINES FOR DESIGNOF SPHERICAL & CYLINDRICAL

BRIDGE BEARINGS

RESEARCH DESIGNS AND STANDARDS ORGANISATION

LUCKNOW

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INDEX

1.0 Scope

2.0 Defii!io of P"o#$c! %# i!e#e# $e

'.0 Te"( of Refe"ece & S)(*o+

,.0 -%!e"i%+ Specific%!io

.0 Dei/ Re$i"e(e!

.0 -%$f%c!$"i/

.0 Accep!%ce3 Ce"!ific%!io %# -%"4i/

5.0 P%c4%/i/3 !"%po"! %# !o"%/e

6.0 Apec! Re+%!e# !o Be%"i/ Pe"fo"(%ce & I!%++%!io

10.0 ANNEXURES

Ae7$"e A 8 P"ope"!ie of Lo9 F"ic!io S+i#i/ -%!e"i%+ :PTFE & UH-;PEic4ee of !>e B%c4i/ P+%!e

Ae7$"e E 8 Fe""o7)+ Te! fo" H%"# C>"o(i$( P+%!i/

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1.0 Scope

This guideline deals with the requireents !"r the aterials# design# anu!a$ture# testing# installati"n

and aintenan$e "! S%heri$al & C'lindri$al (earings !"r (ridges) The %r"*isi"ns "! this guideline are

eant t" ser*e as a guide t" +"th design & $"nstru$ti"n engineers# +ut ere $"%lian$e with the

%r"*isi"ns sti%ulated herein will n"t relie*e the in an' wa' "! their res%"nsi+ilit' !"r the %er!"ran$e& s"undness "! the %r"du$t in the stru$ture)

The %r"*isi"ns "! this guideline shall a%%l' !"r "%erating te%erature +etween , -. "C and / .0 "C)

The %r"*isi"ns ade in this guideline are +ased "n an assued w"r1ing li!e "! the S%heri$al (earing

"! 2. 'ears)

(earings whi$h are su+3e$ted t" Tensile L"ads are +e'"nd the s$"%e "! this guideline as requiring

s%e$ial arrangeent 4 $"n!igurati"n) Esta+lished guidelines & S%e$i!i$ati"ns w"rldwide a' %lease +e

re!erred !"r su$h (earings) H"we*er this guideline a' +e $"nsidered as a guide !"r general %ur%"sein su$h $ases)

S%heri$al & C'lindri$al (earings with an in$luded angle 567 greater than 80"and 9."res%e$ti*el' are

+e'"nd the s$"%e "! this guideline)

Sliding sur!a$es with a diaeter "! the $ir$us$ri+ing $ir$le "! :T;E "r UH


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2.0 Defii!io of p"o#$c! %# i!e#e# $e

2.1 Defii!io of !>e P"o#$c!

Sp>e"ic%+ Be%"i/

The S%heri$al (earing is a stru$tural +earing whi$h $"nsists "! a set "! $"n$a*e & $"n*e= atingsteel +a$1ing %late with a l"w !ri$ti"n sliding inter!a$e in +etween there+' %eritting r"tati"n +' in,$ur*e sliding) ;"r the %ur%"se "! %r"*iding the "*eent a+ilit'# the +earings a' +e $"+ined with!lat sliding eleents# guides and restraining rings)

;i=ed +' sliding sur!a$e

Fi/$"e 1 8 Sp>e"ic%+ Be%"i/

a7 ;ree !"r dis%la$eent in an' dire$ti"n +7Internall' guided in "ne dire$ti"n

$7 E=ternall' guided in "ne dire$ti"n d7;i=ed +' a restraining ring

Fi/$"e 2 8 Sp>e"ic%+ Be%"i/ co(*ie# 9i!> f+%! +i#i/ e+e(e!

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C)+i#"ic%+ Be%"i/

The C'lindri$al (earing $"nsists "! a etal +a$1ing %late ha*ing a $"n$a*e $'lindri$al sur!a$ea!!i=ed with a l"w !ri$ti"n sliding inter!a$e t" %r"*ide !ri$ti"n less sliding against the ating aterial!r" an"ther +a$1ing %late with a at$hing $"n*e= $'lindri$al sur!a$e) C'lindri$al (earings are als"

used in $"+inati"n with !lat sliding eleents and guides t" !"r !ree "r guided +earings)

a7 ;i=ed +' end st"%s and sliding sur!a$e *< With"ut end st"%s !"r dis%la$eents in

' dire$ti"n

Fi/$"e ' ? C)+i#"ic%+ Be%"i/

a7 ;ree !"r dis%la$eents in an' dire$ti"n +7 Guided +' an internal guide in = dire$ti"n

$7 Guided +' e=ternal guides in = dire$ti"n

Fi/$"e , ? C)+i#"ic%+ *e%"i/ co(*ie# 9i!> f+%! +i#i/ e+e(e!

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2.2 I!e#e# $e

S%heri$al & C'lindri$al (earings are suita+le !"r all t'%es "! stru$tures +ut es%e$iall' !"r s"!tstru$tures with relati*el' large and !requent dis%la$eents $aused +' *aria+le l"ads# and !"rsu%erstru$tures that indu$e !ast sliding dis%la$eents in +earings# e)g) in +ridges !"r the railwa's)

'.0 Te"( of Refe"ece & S)(*o+

'.1 Te"( & Defii!io

B%e P+%!e

Steel :lates "! the (earing Asse+l' at T"% & ("tt" inter!a$ed with the stru$ture C"n$rete 4 Steele+er)

B%c4i/ P+%!e

Steel :lates $"n!ining the l"w !ri$ti"n sliding aterialli1e :T;E et$)

G$i#e


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# diaeter

e e$$entri$it'

f strength

> %r"trusi"n "! sliding sur!a$e sheet !r" its re$ess

" radius "! $ur*ature

! thi$1ness

7 l"ngitudinal a=is

) trans*erse a=is

a=is n"ral t" the %rin$i%al +earing sur!a$e

design r"tati"n

angle +etween the *erti$al and the resultant a%%lied l"ad

a=iu de*iati"n "! %lane "r $ur*ed sliding sur!a$e !r" the"reti$al sur!a$e

hal! in$luded angle "! the $ur*ed sliding sur!a$e

rati" 4 $"e!!i$ient

$",e!!i$ient "! !ri$ti"n

n"ral %ressure

* +a$1ing %late

4 design *alue at Chara$teristi$ 4 !undaental 4 Ser*i$e 5SLS7 $"nditi"n

# design *alue at Strength 4 Ultiate 5ULS7 $"nditi"n

(i iniu

(%7 a=iu

%/ a*erage

p :T;E 5:"l'tetra!lu"r"eth'lene7

UH-;PE Ultra High


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s%e$i!ied sur!a$e r"ughness)

,. -%!e"i%+ co(*i%!io

The %erissi+le $"+inati"n "! the aterials 5sliding & ating sur!a$es7 t" +e used !"r slidinginter!a$es shall +e as gi*en in Ta+le 6 +el"w) The sliding sur!a$e shall +e lu+ri$ated in a$$"rdan$ewith Clause @)?)

T%*+e 2J Pe"(ii*+e co(*i%!io of (%!e"i%+ fo" pe"(%e! %pp+ic%!io % +i#i/ i!e"f%cefo" p>e"ic%+ *e%"i/

:lane sur!a$e Cur*ed sur!a$e Guides

:T;E 4UH)ic%+ %# C>e(ic%+ P"ope"!ie of +$*"ic%!

:r"%erties Testing Standard Requireents

W"r1ed %enetrati"n ISO 6-29 68). t" 6).

Dr"%%ing %"int ISO 6-98 -?0 C

Oil se%arati"n a!ter 6@ h at -00C Anne= G "! Eur"$"de EN -229,6>6002

2 5ass7

O=idati"n resistan$e %ressuredr"% a!ter -00h -80C

Anne= H "! Eur"$"de EN -229,6>6002

0)-


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All e=%"sed steel sur!a$es in$luding +a$1ing %lates shall +e ade !ree !r" rust and rust indu$ing$"ntainants +' sh"t +lasting t" SA 6 r"ughness and %r"te$ted against $"rr"si"n +' a suita+leeth"d su$h as gal*aniJing "r Jin$ ri$h e%"=' %aint et$) as %er anu!a$turers s%e$i!i$ati"n)H"we*er# the thi$1ness "! su$h %r"te$ti*e la'er in$luding the %rie & t"% $"ats shall +e -.0 in)

.0 Dei/ Re$i"e(e!

.1 Gee"%+

L"ads# !"r$es# "*eents and r"tati"n t" +e $"nsidered in designing the +earings shall +edeterined +' suita+le gl"+al anal'sis "! the stru$ture with idealiJed +"undar' $"nditi"n under an'$riti$al $"+inati"n that $an $"e=ist) Resistan$e due t" !ri$ti"n at the sliding inter!a$e "! the +earingshall +e ign"red !"r idealiJing the +"undar' $"nditi"ns) H"we*er# indu$ed !"r$e generated due t"!ri$ti"n at sliding inter!a$e shall +e $"nsidered in the design "! +earings and ad3a$ent 5su%%"rted 4su%%"rting7 stru$tures)

C"e=isting *alues "! l"ads# !"r$es & "*eent data !"r design "! +earings shall +e !urnished !"r +"thSer*i$e & Ultiate Liit state $"nditi"n !"r ea$h t'%e "! +earings se%aratel' in the !"rat gi*en inAnne=ure C B(ridge (earing Design uesti"nnaire ;"r)

The designer "! +ridge su%erstru$ture shall %r"*ide the !"r$es required t" +e trans!erred t"su+stru$ture) The design "! +earing sh"uld n"rall' +e d"ne +' +earing anu!a$turers and get ita%%r"*ed !r" the $lient 5i)e) +ridge designer7 "r his re%resentati*e)

(earing anu!a$turer shall gi*e the guarantee !"r satis!a$t"r' %er!"ran$e "! +earing !"r a%%r"%riate%eri"d 1ee%ing in *iew the design li!e "! +earing)

.2 Ro!%!io c%p%*i+i!)

The !"ll"wing $riteria shall +e satis!ied !"r all design $"nditi"ns>

i7 The Hard Chr"iu :lated $"n*e= ating sur!a$e shall $"*er the $"n$a*e sliding sur!a$e

!ull' under !ull design r"tati"n)

ii7 There shall +e n" $"nta$t 5seiJure7 "! $"n$a*e & $"n*e= "r an' "ther etalli$ $"%"nent "!

the (earings under !ull design r"tati"n)

;"r the *eri!i$ati"n "! the a+"*e $"nditi"ns# the n"inated design r"tati"n *alue shall +e in$reased

+' / 0)00. radians "r / -0 4 r radians# whi$he*er is greater) 5r radius "! the $"%"nent +eing$he$1ed in 7

.' Dip+%ce(e! c%p%ci!)

The !"ll"wing $riteria shall +e satis!ied !"r all design $"nditi"ns>

i7 The stainless steel ating sur!a$e shall $"*er the !lat sliding sur!a$e !ull' under !ull design

dis%la$eent)

ii7 The sliding inter!a$e shall n"t $ease "r +e$"e unsta+le +e!"re %r"*iding the !ull design

dis%la$eent)

;"r the *eri!i$ati"n "! the a+"*e $"nditi"ns# the n"inated design "*eent requireent shall +e

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in$reased +' / 60 in +"th dire$ti"ns "! "*eent with a in) t"tal "*eent "! / .0 in+ridge l"ngitudinal dire$ti"n and / 6. in the +ridge lateral dire$ti"n unless restrained)

NOTEJ8 T>e ic"e%e i "o!%!io & (oe(e! "e$i"e(e! % !%!e# %*oe >%++ >o9ee" *e%pp+ic%*+e o+) fo" !>e p$"poe of c%+c$+%!i/ !>e p"%c!ic%+ "o!%!io%+ c+e%"%ce *e!9ee !>eco(poe! %# (oe(e! c%p%*i+i!ie 9i!>o$! ce%i/ o" f%i+$"e %# >%++ o! *ecoi#e"e# 9>i+e c%+c$+%!i/ !>e !"ee K %pp+)i/ #ei/ c>ec4 fo" "o!%!io & (oe(e!%*i+i!) of !>e Be%"i/.

., Dei/ e"ific%!io fo" C$"e# +i#i/ $"f%ce

When diensi"ning sliding sur!a$es# the resultant "! the $",e=isting a$ti*e and indu$ed h"riJ"ntal!"r$es generated due t" sliding !ri$ti"n shall +e $"nsidered)

.,.1 Re!"%ii/ Ri/

The $a%a$it' "! the (earings whi$h restraint "nl' +' $ur*ed sliding sur!a$e 5re!er !igure -7 shall +e

$he$1ed !"r sta+ilit' & se%arati"n against the H"riJ"ntal !"r$es)

The $a%a$it' "! the $ur*ed sliding sur!a$e !"r resisting the a%%lied h"riJ"ntal !"r$es shall +e $he$1ed+' the !"ll"wing e=%ressi"n>

HuM = r6= ss= sin65 7 = sin

in whi$h

tan -5 Fs4 Ns7

sin -5 L 4 6r 7

where

Fs !a$t"red H"riJ"ntal L"ad

L %r"3e$ted diaeter "! the Sliding Sur!a$e %er%endi$ular t" the r"tati"n a=is

Ns *erti$al L"ad due t" :eranent L"ad e!!e$ts

r radius "! the $ur*ed sliding sur!a$e

angle +etween the *erti$al and the resultant a%%lied l"ad

design r"tati"n angle

su+tended sei,angle "! the $ur*ed sliding sur!a$e

ss a=iu a*erage $"nta$t stress %eritted "n the sliding sur!a$e i)e)

ss !1= 1 4

where#

-)@

!1is the $hara$teristi$ *alue "! $"%ressi*e strength a$$"rding t" Ta+le - and

1 is the redu$ti"n !a$t"r as des$ri+ed in Clause @)2Alth"ugh the $a%a$it' "! the (earings $ur*ed sliding sur!a$e i! satis!ies the $he$1 !"r sta+ilit' &

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se%arati"n against the H"riJ"ntal !"r$es) It is re$"ended t" !i= the +earing +' a steel restrainingring !"r additi"nal sa!et' against se%arati"n & sliding "!! under un!"reseen $"nditi"ns)

In $ase the $ur*ature "! the sliding sur!a$e is inadequate t" resist the a%%lied h"riJ"ntal !"r$es# thes%heri$al +earing shall +e !i=ed +' a steel restraining ring as sh"wn in !igure .)

Fi/$"e A""%/e(e! of Re!"%ii/ Ri/ i Fi7e# Sp>e"ic%+ Be%"i/ :T)pic%+

.,.1.1 Dire$t Tensile Stress# 5t#rr7 in the Restraining Ring Cr"ss Se$ti"n shall satis!'>

F='#sd M !' 4 where -)0 6 = tw = h

.,.1.2 Shear Stress# 5s#rr7 at Restraining Ring & (ase Inter!a$e shall satis!'>

-). = F='#sd M !' 4 where -)926 Di = tw

.,.1.' (ending Stress# 5+#rr7 at Restraining Ring & (ase Inter!a$e shall satis!'>

-). = F='#sd = h!- = 8 M !' 4 where -)0

Di = tw6

.,.1.' Equi*alent Shear & (ending Stress shall satis!'>

5 +6 / 2 = s67 M !' 4 where -)0

.,.1., The inter!a$e "! the +"tt" $"%"nent with the restraining ring shall +e %r"*ided in radius t"uni!"rl' trans!er the H"riJ"ntal ;"r$es with $ausing the edge $"n$entrati"n)

F='#sd 15 x Rrrx Dix fu2 where -)0Ed = 6

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.,.1. E!!e$ti*e width "! the $"nta$t sur!a$e 5we7 shall +e $al$ulated +' the !"ll"wing e=%ressi"n

we 2)0@ = P5F='#sd= Rrr7 4 5Ed = Di7Q

als"#

w we/ 5a=#d = Di7

where#

F='#sd Resultant a$ting H"riJ"ntal ;"r$e in N

Di Internal dia) "! the Restraining Ring in

tw Thi$1ness "! the Restraining Ring in

Rrr Radius "! $ur*ature "! the $"nta$t sur!a$e with the Restraining Ring

h!- Distan$e +etween the %"int "! !"r$e a%%li$ati"n and the Restraining Ring (ase in

h De%th "! the Restraining Ring in Ed


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Ke'

- %r"3e$ted area "! the $ur*ed sliding sur!a$e

Fi/$"e @e"ific%!io c>e(e fo" !>e c$"e# +i#i/ $"f%ce :e7%(p+e

e2 .(r + b)

where#

b distan$e 5in ele*ati"n7 +etween the $r"ss,se$ti"n under $"nsiderati"n and the sliding sur!a$e5Re!er !igure 87.

At an' rate# this e$$entri$it' a$ts n"netheless in the "%%"site dire$ti"n)

In the t'%e "! +earings equi%%ed with "nl' "ne sliding sur!a$e# e2"$$urs "nl' in the $ur*ed slidingsur!a$e and# !urther"re# "nl' when said sheet is atta$hed t" the $"n*e= +a$1ing %late)

.,.'., L%!e"%+ fo"ce

Lateral !"r$es result !r" h"riJ"ntal a$ti"ns and the !ri$ti"n resistan$e "! the "ther +earings in thestru$ture) This e$$entri$it' is n"t a%%li$a+le !"r the $ur*ed sliding inter!a$e in the +earings wherelateral !"r$es are transitted +' e=ternal guides "r restraining rings) In +earings "! the !i=ed t'%e with"nl' "ne sliding sur!a$e "r with internal 4 $entral guides# the h"riJ"ntal l"ad F s %r"du$es ane$$entri$it' whi$h is>

e@ Fs ) (r + b) Ns

In all $ases where the lines "! a%%li$ati"n "! lateral a$ti"n and rea$ti"n are n"t $"in$ident the resulting$"u%le $auses an e$$entri$it' that shall +e additi"nall' ta1en int" a$$"unt)

.,., Sep%"%!io of S+i#i/ S$"f%ce

With the e=$e%ti"n "! guides# it shall +e *eri!ied that :T;E "r UH

et M L?

where#

L %r"3e$ted diaeter 5re!er !igure 87

. G$i#e

In the design "! the (earings where# e=ternall' a%%lied h"riJ"ntal !"r$es are t" +e resisted# Guides

either e=ternall' atta$hed & %r"3e$ting !r" the t"% sliding %late "r internall' l"$ated %r"3e$ting !r"the %ist"n & sliding inside the re$ess in the t"% sliding %late shall +e used) The sliding inter!a$e shall+e !i=ed "n t" the Guides & its ad3a$ent sur!a$e !"r l"w !ri$ti"n sliding "*eent) While the Stainless

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steel stri%s shall +e a!!i=ed +' $"ntinu"us !illet weld# the sliding sur!a$e stri%s shall +e either +"ndedwith $"n!ineent "r s$rewed t" assist asse+ling) C"%"site aterials shall +e atta$hed +'+"nding su%%leented +' e$hani$al atta$hent "utside the sliding sur!a$e

In "rder t" !a$ilitate higher r"tati"n !reel'# the sliding sur!a$e at Guides shall +e %la$ed int" a r"$1erstri% +a$1side "! whi$h shall +e $ur*ed t" %r"*ide s""th !ull sur!a$e $"nta$t at the sliding inter!a$ee*en under r"tati"n $"nditi"n) Re!er !igure 9 !"r details)

)Fi/$"e A""%/e(e! of Roc4e" S!"ip :Seco#%") +i#i/ $"f%ce< i G$i#e# Sp>e"ic%+Be%"i/ :T)pic%+e *%c4i/ p+%!e fo" cofie(e! of !>e S+i#i/ S$"f%ce

The sh"ulders "! the re$ess shall +e shar% and square t" restri$t the !l"w "! the sliding sur!a$e andthe radius at the r""t "! the re$ess shall n"t e=$eed - 5re!er !igure +el"w7)

Diensi"ns in illieters

X 8 X

Ke'

- Shar% edgeFi/$"e 6 8 De!%i+ of "ece fo" S+i#i/ S$"f%ce

The sliding sur!a$e shall ideall' !it in the re$ess with"ut $learan$e) The a=iu %erissi+let"leran$e "n the !it "! sliding sur!a$e inside the re$ess shall n"t e=$eed the *alues s%e$i!ied in Ta+le.)

T%*+e 8 To+e"%ce o Fi! of +i#i/ $"f%ce i !>e "ece

Diensi"n L 57 Ga% 579. ,.00 0).

.0- ,-000 -)0-00- ,-.00 -).

L %r"3e$ted diaeter 5re!er !igure 87

c< F+%!e

Sur!a$e "! the $ur*ed +a$1ing %late t" re$ei*e the $"n$a*e sliding sur!a$e shall +e !inished in su$h awa' that the a=iu de*iati"n ^J !r" the"reti$al %lane sur!a$e shall n"t e=$eed 0)0002 d "r 0)6# whi$he*er is greater)

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.2 Coc%e S+i#i/ S$"f%ce

The thi$1ness \t%\ "! the sliding sur!a$e and itYs %r"trusi"n \hY in the unl"aded $"nditi"n with $"rr"si"n%r"te$ti"n shall eet the $"nditi"ns gi*en in Ta+le 8

T%*+e 8 T>ic4e !p%# p"o!"$io > of !>e S+i#i/ $"f%ce

Design *alues ;lat and $ur*ed sliding sur!a$es Guides

Thi$1ness t%in 6)6. ) h M t:T;E M ?)0_ with h in .)0 M t:T;E M ?)0

:r"trusi"n h in

h 6)00 / L-.00

L diaeter "! the %r"3e$ted area "! thesliding sur!a$e in

h 6)0 ` 0)6

The t"leran$e "n the %r"trusi"n h is ` 0)6 !"r L less than "r equal t" 9.0 and ` 0)2 !"r Lgreater than 9.0 ) The %r"trusi"n h shall +e *eri!ied at least three ar1ed easuring %"intss%read $ir$u!erentiall'# where the $"rr"si"n %r"te$ti"n $"ating shall n"t e=$eed 600 ) Theadissi+le t"leran$e "n thi$1ness "! single sheet "r ass"$iated ulti%le sheets "! the sliding sur!a$eis / 0)2# , 0)0 !"r sheets with a diaeter L less than 9.0 and / 0).# , 0)0 !"r largersheets)

Cur*ed sliding sur!a$e sheets shall +e $ir$ular and a' +e su+di*ided int" a dis$ and an annulus)The dis$# i! su+di*ided# shall n"t +e less than 9.0 in diaeter and the width "! the annulus shalln"t +e less than .0 ) The annulus a' +e su+,di*ided int" a=) !"ur equal segents) ("th thedis$ and the annulus a' +e retained in re$esses) The se%arating ring "! the +a$1ing %late shall n"t+e "re than -0 wide) ;igure -0 sh"ws the $"n!igurati"ns "! $ur*ed sliding sur!a$e sheets !"r

s%heri$al sliding sur!a$es) Diensi"ns in illieters

Fi/$"e 10 8 S$*#iiio of "ecee# S+i#i/ S$"f%ce >ee! fo" p>e"ic%+ +i#i/ $"f%ce

.' S+i#i/ $"f%ce fo" /$i#e

Diensi"n Ba shall n"t +e less than 60 and the "di!ied sha%e !a$t"r shall +e greater than @5see !igure --7)

S A : ) t : , h u ) h h

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A:is the $"%ressed 5unde!"red7 sur!a$e and u the %erieter "! the Sliding Sur!a$e sheet)

Diensi"ns in illieters

Fi/$"e 11 8 E7%(p+e of "ecee# +i#i/ $"f%ce >ee! fo" /$i#e

., H%"# C>"o(i$( S$"f%ce

The hard $hr"iu sur!a$e shall +e *isuall' ins%e$ted !"r $ra$1s and %"res) In additi"n t" the *isualins%e$ti"n# the a+sen$e "! de!e$ts shall +e *eri!ied +' an' suita+le n"n,destru$ti*e test e)g) ;err"='lTest in a$$"rdan$e withAnne=ure E B;err"='l Test !"r Hard Chr"iu :lating"! this s%e$i!i$ati"n)I! an' de!e$ts in the sall %"rti"n are dete$ted in the test# the hard $hr"e %lating shall +e rew"r1edand the test shall +e a%%lied "n the entire $hr"e %lated sur!a$e and i! the de!e$ts are still n"ti$ed#the hard $hr"e %lating shall +e re3e$ted)

Sin$e hard $hr"iu %lating is n"t resistant t" $hl"rides in a$id s"luti"n "r t" !lu"rines and $an +edaaged +' air +"rne %arti$les# su$h as "$$ur in industrial en*ir"nent# s%e$ial %r"*isi"n shall +eade t" %r"te$t the sur!a$es in th"se $"nditi"ns)

. P"o!ec!io %/%i! co""oio %# co!%(i%!io

While d"ing the $"rr"si"n %r"te$ti"n as s%e$i!ied in $lause @)-0 "! this s%e$i!i$ati"n) ;"ll"wing $areshall +e ta1en>

Where the austeniti$ steel sheet is atta$hed t" itYs +a$1ing %late +' $"ntinu"us !illet weld# the area "!the +a$1ing %late $"*ered +' the austeniti$ steel sheet# a!ter sh"t +lasting# shall +e %r"*ided with tw"$"ats "! e%"=' %rier 5dr' !il thi$1ness .0 t" -00 7# i! n"t stated "therwise)

Where the austeniti$ steel sheet is atta$hed +' s$rewing# $"unter%un$hed s$rewing "r ri*eting the!ull $"rr"si"n %r"te$ti"n s'ste shall +e a%%lied t" the +a$1ing %late +ehind the austeniti$ steel sheet)

:r"*isi"n against $"ntainati"n "! the sliding sur!a$e shall +e ade +' suita+le de*i$es e)g) wi%erseal# ru++er a%r"n "r +ell"ws) Su$h %r"te$ti"n de*i$es shall +e easil' re"*a+le !"r re%la$eentand 4 "r aintenan$e ins%e$ti"n %ur%"se)

. Ae(*+)

:ri"r t" asse+l' the sliding sur!a$es shall +e $leaned)

A!ter $leaning and %ri"r t" asse+l'# the di%led sliding sur!a$e shall +e lu+ri$ated with lu+ri$ant

a$$"rding t" Clause @)? in a wa' ensuring that all the di%les are !illed with"ut air entra%ent) ;"rguides the sliding aterial shall +e initiall' lu+ri$ated +' ru++ing a sall a"unt "! lu+ri$ant int" thesur!a$e and wi%ing "!! the reainder)

Page 21 of 38


22/38

During asse+l' %r"$ess# %re$auti"ns shall +e ta1en against $"ntainati"n "! lu+ri$ated sur!a$es)

The +earing a' +e %r"*ided with a "*eent indi$at"r s$ale whi$h is t" +e !i=ed "n the side !a$e"! the t"% sliding %late with a %"inter %"inting t" it !r" the (earing +"tt" $"%"nent)

.0 Accep!%ce3 Ce"!ific%!io %# -%"4i/

Sti%ulati"ns "! this $lause regarding the A$$e%tan$e Testing# Certi!i$ati"n and


23/38

.1.2 Accep!%ce Te! *) Ipec!i/ A$!>o"i!)

(earings %assing the in h"use test requireents are then "!!ered t" the a$$e%ting 4 ins%e$ti"nauth"rit' !"r A$$e%tan$e Testing) ;"ll"wing A$$e%tan$e tests in %resen$e "! the Ins%e$ti"n auth"rit'shall +e %er!"red "n the $"%"nents "! the +earings "r the +earing as a wh"le# as a%%li$a+le)

%< Te! fo" cofo"(%ce of "%9 (%!e"i%+ & i! p"ocei/

i7 In additi"n t" the $erti!i$ates "! Raw aterials !r" the su%%lier 4 anu!a$turer !"ring the

initial +asis "! a$$e%tan$e) Rand" sa%ling & testing at Inde%endent NA(L a$$redited la+

!"r the aterial used in the %r"du$ti"n "! the (earings li1e steel# sliding sur!a$e# stainless

steel# ("lts et$) shall +e d"ne) The ins%e$ti"n 4 a$$e%ting auth"rit' at his dis$reti"n shall rela=

and n"t insist "n $"ndu$ting the a+"*e test su+3e$t t" a*aila+ilit' "! the satis!a$t"r' test data

!"r the siilar test $"ndu$ted "n aterials "! +earings re$entl' anu!a$tured & su%%lied !"r

"ther %r"3e$ts within a %eri"d "! si= "nths %re$eding the date "! Testing)

ii7 Ultras"ni$ ins%e$ti"n "! the steel $"%"nents

iii7 Test "n welding e) g) D'e :enetrati"n Test

i*7 Test "n hard $hr"iu %lating e) g) ;err"='l Test

*7 Hardness test !"r the e# Be%"i/i7 (earings shall +e rand"l' $he$1ed !"r sur!a$e !inish "r an' "ther dis$erni+le su%er!i$ial

de!e$ts)

ii7 (earings shall +e rand"l' $he$1ed !"r "*erall diensi"ns as %er the


24/38

NOTEJ8

;"r tests s%e$i!ied under iii7# i*7 & *i7 "! Clause 9)-)6# the (earings shall +e held under L"ad!"r a %eri"d "! 20 inutes)

All testing shall +e d"ne !"r SLS L"ading)

;"r the %ur%"se "! L"t $lassi!i$ati"n# !"ll"wing de!initi"ns shall +e a%%li$a+le

A l"t shall $"%rise "! the t"tal nu+er "! (earings anu!a$tured t"gether# "! the t'%e & l"ad$a%a$it' as de!ined +el"w# and "!!ered !"r the Ins%e$ti"n at a tie t" the Ins%e$ting 4A$$e%ting auth"rit') H"we*er# the a=iu nu+er "! (earings in "ne l"t shall +e liited t"6@) (earings in e=$ess "! 6@ N"s) shall +e treated as se%arate l"t)

The !i=ed & "*a+le (earings shall +e $lassi!ied as se%arate L"ts) H"we*er# the "*a+le+earings irres%e$ti*e "! uni,dire$ti"nal & +i,dire$ti"nal "*eent a+ilities shall +e %la$edunder the sae l"t)

In ters "! L"ad $a%a$it'# (earings with a=) design *erti$al l"ad less than .00


25/38

. -%"4i/

All (earings shall ha*e suita+le identi!i$ati"n %lates %eranentl' a!!i=ed whi$h shall +e *isi+le a!terinstallati"n# identi!'ing the !"ll"wing in!"rati"n>

, Nae "!


26/38

standard l"$ati"n# shall n"t e=$eed 2 "! the (earing sh"rter diensi"n in %lan and "! the (earingT"tal Height in ele*ati"n)

The de*iati"n in %arallelis "! the Sliding sur!a$e with res%e$t t" datu shall n"t e=$eed - "! theLength in the dire$ti"n "! easureent)

6.1 I!%++%!io

(earings are t" +e installed with due $are t" ensure their $"rre$t !un$ti"ning in a$$"rdan$e with thedesign "! the Stru$ture) The %riar' !a$t"rs t" +e $"nsidered during the Installati"n "! the (earingsare>

Dei/ B%e# Apec!

:r"*isi"n "! the (earings in the stru$ture shall +e s" ade s" as t" ha*e the least $han$es "!dust & dirt a$$uulati"n and als" s%"ilage !r" rain water see%age that a' a!!e$t their%er!"ran$e)

:r"*isi"n "! a$1ing :"ints shall +e ade during the design 4 $"nstru$ti"n "! the Stru$ture)

C"nsultati"n with the (earing anu!a$ture shall +e d"ne at an earl' stage "! the (ridgedesign t" a*"id the hassles "! Tand"ns 4 :restressing Strands !"uling with the (earingD"wels)

T"%po"!%!io & Si!e H%#+i/ Apec! Trans%"rt (ra$1ets are n"t t" +e relied !"r the Li!ting "! the (earings)

U%"n re$ei%t "! the (earings at Site# the $"ntra$t"r shall ha*e a *isual E=ainati"n "! the(earings t" ensure that n" daage "r Dis%la$eent "! the (earing C"%"nents is ta1en

%la$e during the Trans%"rtati"n) An' re$ti!i$ati"n "r re,asse+l' i! required shall +e d"nestri$tl' in the %resen$e "! the


27/38

6.2 -%i!e%ce

(earings shall +e designed and anu!a$tured t" a1e the *irtuall' aintenan$e !ree s" that theundesira+le e!!e$ts $aused +' e=tree at"s%here "r aggressi*e en*ir"nental $"nditi"n 4un!"reseen e*ents $an +e eliinated t" a great e=tent) H"we*er# the surr"unding area "! the+earings shall alwa's +e 1e%t $lean and dr' t" a*"id daage t" the (earings)

:r"*isi"ns !"r suita+le eas' a$$ess t" the +earing shall +e ade in the $"nstru$ti"n drawings !"r the%ur%"se "! ins%e$ti"n and aintenan$e) :r"*isi"n shall +e ade !"r 3a$1ing u% the su%erstru$tures" as t" all"w re%air 4 re%la$eent "! the +earings# i! required at an' tie in !uture)

Ins%e$ti"n "! (earing at site is required t" +e $arried "ut !r" tie t" tie t" as$ertain the%er!"ran$e "! the (earings) :eri"di$ n"inal aintenan$e "! +earing shall +e $arried "ut in "rdert" ensure +etter %er!"ran$e and l"nger li!e "! the (earings) The (earings are generall' required t"+e ins%e$ted at an inter*al "! a%%r"=) "ne 'ear !"r the !irst !i*e 'ears and at an inter*al "! tw" 'earstherea!ter "r as agreed +etween the $lient and the $"ntra$t"r) H"we*er# the +earings shall als" +e

e=ained $are!ull' a!ter unusual "$$urren$es# li1e hea*' tra!!i$# earthqua1es# $'$l"nes and +attering!r" de+ris in high !l""ds)

The ins%e$ti"n shall +e %re$eded +' $are!ul $leaning "! the (earings as well as its surr"undings%a$e# de%ending "n the a$tual $"nditi"ns ar"und the (earings# e)g) de%"sit "! salt# de+ris# dust "r"ther !"reign aterial)

E+e(e! of Ipec!io

The !"ll"wing are re$"ended ins%e$ti"n eleents and a$ti"ns whi$h are $"nsidered ne$essar' t""nit"r and u%1ee% the +earings>

:1< -e%$"e(e! of -oe(e!> During ins%e$ti"n at site# easureents are required t" +eta1en and d"$uented t" $"%ute its "*eent and r"tati"n *alues in relati"n t" theirdesign *alues t" as$ertain whether the %er!"ran$e "! the +earings are satis!a$t"r') T"as$ertain a=iu "*eent# easureent sh"uld +e ta1en "n$e during %ea1 winter5earl' "rning7 and "n$e during %ea1 suer 5a!tern""n7 and $"rres%"nding at"s%heri$te%erature sh"uld +e re$"rded) The re$"rded *alue "! "*eent shall +e $"%ared withthe design *alues)

:2< -e%$"e(e! of Di(eio> O*erall diensi"ns "! the (earings are required t" +eeasured and $"%ared with the a$tual diensi"ns t" as$ertain an' e=$essi*e stress "rstrain "n the (earing)

:'< Ei#ece of +oc4e# i Co#i!io> I! an' "*a+le "r r"tating %art "! a (earing is !"und t" +ein l"$1ed , in 4 3aed $"nditi"n# ne$essar' re$ti!i$ati"n easures shall +e ta1eniediatel')

:,< Ei#ece of Co""oio> I! $"rr"si"n "! an' %art "! e=teri"r e=%"sed steel sur!a$e "! the+earing is dete$ted# the !"ll"wing easures a' +e ta1en) In additi"n# the r""t $ause "!de!e$t sh"uld +e sear$hed and %r"%er a$ti"ns sh"uld +e ta1en t" a*"id re$urren$e "! the%r"+le)

Dete$t a!!e$t %art) Wire +rush the a!!e$ted %"rti"n t" $lean "! itYs rust)

A%%l' %r"te$ti*e $"ating as %er The ad3a$ent stru$ture "! the (earings are

Page 27 of 38


28/38

als" required t" +e ins%e$ted !"r an' daage and ne$essar' a$ti"ns t" re%air the sae#sh"uld +e ta1en iediatel')

Re$+! %# Ac!io

The results "! e*er' ins%e$ti"n has t" +e re$"rded in the ins%e$ti"n re%"rt and shall +e dee%l'dis$ussed with the %r"3e$t C"nsultants and the (earing

5-7 Re , ins%e$ti"n and 4 "r "nit"ring is required)

567 ;urther easureents 4 l"ng,ter "nit"ring "r design anal'sis needed 5e)g) $"nsideringe=tree te%eratures 4 e=%"sures# *ariati"n "! l"ads# et$)7)

527


29/38

ANNEXURE A

A.0 Lo9 F"ic!io T>e"(o8p+%!ic S+i#i/ -%!e"i%+ :PTFE o" UH-;PE)ic%+ P"ope"!ie of PTFE & UH-;PE

Page 29 of 38

:r"%ert' Testing StandardRequireent

Unit "!


30/38

A.' Te! Re$i"e(e!

The test s%e$iens shall +e %re%ared !r" !ull' !inished sheet +ut with"ut i%ressed di%les) The'shall +e tested at 62C 6C)


31/38

ANNEXURE B

B.0 Co(poi!e -%!e"i%+ fo" Seco#%") S+i#i/ S$"f%ce :G$i#e CuSn 8

$"%"siti"n +' ass

thi$1ness

Sn: :+ ;e bn / Ni "thers Reainder Cu

. t" 9).00)2.0)-00)-00).00)20

56)- 0)-.7

hardness H( , EN ISO 8.08 5all %arts7 ?0 t" -80

(r"nJeinterla'er

aterial> CuSn -0C"%"siti"n +' ass Sn -0 t" -6

:+ -)00

: 0)6. t" 0)@

Si 0)-9

;e 0)-.

Ni 0)-.

"thers 0).0

saturati"n with :T;E , :+ 6. thi$1ness

15.0

0.025.0

+

C"%"siteaterialsur!a$e la'er

aterial > :T;E / :+$"%"siti"n +' ass

:+ @ t" 86 #reainder :T;E

Thi$1ness 02.0

0.001.0

+

t"tal thi$1ness 6)@? 0)0-.

"*erla' adhesi"n EN ISO 6@0 iniu GT6

Page 31 of 38


32/38

B.2 Co(poi!e -%!e"i%+ C-2

The aterial shall $"nsist "! a !le=i+le etal esh whi$h is sintered int" a :T;E $"%"und with the+earing "r sliding sur!a$e ha*ing the thi$1er :T;E $"at)

The etal esh shall +e CuSn8 sta+iliJed esh !r" 0)6. diaeter wires whi$h are lin1ed atinterse$ti"ns and whi$h has a thi$1ness a!ter $alendaring "! a%%r"=iatel' 0)@ ) The esh $"untin war% and we!t dire$ti"n shall +e -8 - %er -0 )

The :T;E $"%"und shall +e :T;E with 20 6 !iller $"ntent# $"nsisting "! glass !i+ers andgra%hite)

The aterial is t" $"n!"r t" the $hara$teristi$s listed in Ta+le ()6)In additi"n# the $"nditi"n "! the aterial and its sur!a$e !inish shall +e $he$1ed *isuall')

T%*+e B.28 C>%"%c!e"i!ic of C-2

Densit'@-00 1g 4 2t" @@00 1g 4 2

Tensile Strength @.


33/38

ANNEXURE C

B"i#/e Be%"i/ Dei/ =$e!io%i"e Fo"(

P"oMec! K S!"$c!$"e N%(e

Be%"i/ I#e!ific%!io -%"4 K N$(*e"=!). "e$i"e# fo" e%c> !)pe

Se%!i/-%!e"i%+

Uppe" S$"f%ceLo9e" S$"f%ce

A++o9%*+eCo!%c!P"e$"e:NK((2e!>e" P"e8e!!i/ %++o9e# :A< K No!8%++o9e# :NA! C+e%"%ce :Pe#e!%+ B"/.!

T)pe of fi7i/ "e$i"e# :E/. Do9e+ KDi!"i*$!io P+%!e

Uppe" f%ce

Lo9e" f%ce

I c%e !>e %++o9%*+e coc"e!e p"e$"e i o! #e!e"(ie# o" 4o93 !>e !>e /"%#e of Coc"e!e K !ee+ Ko!>e" (%!e"i%+ >%++ *e pecifie# fo" *o!> !>e Uppe" & Lo9e" S$"f%ce.

A!!%c> ep%"%!e >ee! !o !%!e %##i!io%+ "e$i"e(e! i. Be%"i/ -%!e"i%+3 p"e #e!e"(ie# pe#e!%+ie :if %%i+%*+ee#$+e >o$+# %cco(p%) Gee"%+ A""%/e(e! D"%9i/ >o9i/ T)pic%+ S$ppo"! P+%De!%i+3 L%)o$! of S!"$c!$"e 9i!> c>e(%!ic %""%/e(e! of Be%"i/ o S$ppo"!3 S$* & S$pe"!"$c!$"e#e!%i+ %#Moii/ Be%"i/ Loc%!io.

Page 34 of 38


35/38

ANNEXURE D

D.0 Defo"(%!io & T>ic4ee of !>e B%c4i/ P+%!e

D)- :erissi+le De!"rati"n "! the !lat ating sur!a$e (a$1ing :late)

The de!"rati"ns ]w as shown in figure D.1 below"! the !lat ating sur!a$e +a$1ing %late shallsatis!' the !"ll"wing $"nditi"n whi$h $"uld "therwise $reate# una$$e%ta+l' sall $learan$e +etweenthe ad3a$ent +a$1ing %lates and as a result# higher wear will "$$ur)

]wM h 5 0)@. 6 5h 4 L7 7

Where

L diaeter "! the Sliding Sur!a$e %er%endi$ular t" the r"tati"n a=is 57h %r"3e$ti"n "! the Sliding Sur!a$e a+"*e the re$ess 57

Fi/$"e D.1 8 Defo"(%!io of *%c4i/ p+%!e

The stress in the +a$1ing %late indu$ed +' the res%e$ti*e de!"rati"n shall n"t e=$eed the elasti$liit in "rder t" a*"id %eranent de!"rati"ns)

D)6 A$tual De!"rati"n "! the !lat ating sur!a$e (a$1ing :late)

The a=iu relati*e de!"rati"n ]w in the +a$1ing %late "*er the diaeter L shall +e $al$ulated!r" the !"ll"wing e=%ressi"n>

]w 0).. ) 1$) $) 1+) + Lwhere#

1$ -)- / 5-)9 , 0)?. ) d+4 L7 ) 56 , d+4 L07 i! L0 M d+ M 6 ) L0

1$ -)- i! d+ 6 ) L0

c= NQd + NGdc ce

1+ 0)20 / 0).. ) d+4 L

+ L 6 ) 2 ) L0 0)@

L / 6 ) t+ d+

Page 35 of 38


36/38

where#

d+ diaeter "! the +a$1ing %late "r -)-2 a+ 5a++eing the side "! the square %late "r the in"r side"! the re$tangular %late7

t+ thi$1ness "! the +a$1ing %late_ !"r +a$1ing %lates with a $"n$a*e sur!a$e the $al$ulati"n a'+e +ased "n the equi*alent $"nstant thi$1ness t+

t+ t+# in/ 0)8 5 t+# a=, t+# in7

L diaeter "! sliding sur!a$e

L0 re!eren$e diaeter 200

Nd design a=ial !"r$e due t" *aria+le a$ti"ns

NGd design a=ial !"r$e due t" %eranent a$ti"ns

E$ sh"rt ter stati$ "dulus "! elasti$it' "! $"n$rete i) e) .000 !$1

E$e "dulus "! elasti$it' "! $"n$rete# !"r %eranent l"ad e!!e$ts i) e) 0). E $

The stru$tural $"n$rete e+ers t" whi$h the +a$1ing %lates are atta$hed shall +e "! in)

a+ is the in"r side "! +a$1ing %late and ++ is the a3"r side "! +a$1ing %late)

Page 36 of 38


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ANNEXURE E

E.0 Fe""o7)+ Te! fo" H%"# C>"o(i$( P+%!i/

E)- :ur%"se "! the Test

The Test "+3e$ti*e is t" as$ertain the s"undness and integrit' "! the Hard Chr"iu :lating at theCur*ed ating sur!a$e)

E)6 :rin$i%le

The test eth"d is +ased "n the %rin$i%le that $ra$1s and %"r"sit' e=tending thr"ugh the hard$hr"iu la'er t" the steel su+strate will +e re*ealed as +lue ar1s due t" the rea$ti"n "! ;e,II,i"nswith the indi$at"r s"luti"n "! %"tassiu !err"$'anide III and s"diu $hl"ride)

E)2 Indi$at"r S"luti"n C"%"siti"n

The !err"='l indi$at"r s"luti"n is $"%"sed "! -0g K 2V;e5CN78 and 20g NaCl in - l "! distilled water"r water $"%letel' desalinated +' i"n e=$hange)

N"te> As s1in $"nta$t with indi$at"r s"luti"n shall +e a*"ided# s1in %r"te$ti"n is required and !""dshall n"t +e $"nsued while handling the indi$at"r s"luti"n) The indi$at"r s"luti"n in $"nta$t witha$ids releases e=treel' t"=i$ %russi$ 5h'dr"$'ani$7 a$id)

E)@ Test S%e$ien & :re%arati"n

The test shall +e %er!"red "n in) 60 "! the $"nta$t area "! the sur!a$e)

The test shall +e $arried "ut at a te%erature +etween .C and @0C)

In "rder t" %re*ent !alse indi$ati"ns# either the at"s%here in the *i$init' "! the test shall +e !ree !r"!err"us %arti$les "r the test sa%le shall +e $"*ered and %r"te$ted !r" dust and !"reign aterial)

Iediatel' +e!"re the test# the hard $hr"iu la'er shall +e $leaned with an a$id,!ree degreasingagent)

E). Test :r"$edure

The hard $hr"iu area t" +e tested shall +e $"*ered with white +l"tting %a%er i%regnated with

the indi$at"r s"luti"n) The wet %a%er shall adhere !irl' t" the hard $hr"iu sur!a$e with"utwrin1les "r +listers)

The s"luti"n shall reain in $"nta$t with the sur!a$e !"r - h"ur in) At the end "! the test %eri"d#+e!"re re"*ing the +l"tting %a%er# it shall +e identi!ied and $he$1ed !"r $hanges in $"l"ur)

De!e$ti*e areas in the hard $hr"iu la'er will +e indi$ated as +lue,$"l"ured ar1s "n the %a%er)A!ter the test# the indi$at"r s"luti"n shall +e $"%letel' re"*ed !r" the sa%le +' eans "! water"r al$"h"l and then the sur!a$e shall +e dried)

E)8 Test Results and its Re%"rting

The test re%"rt shall in$lude at least the !"ll"wing ites>

a7 Identi!i$ati"n "! the test %ie$es 5nae "! anu!a$ture# "rigin and nu+er "! anu!a$turing

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+at$h7 and the unique serial nu+er "! the +earing# i! a%%li$a+le)

0 +7 C"nditi"n "! the test%ie$es %ri"r t" and a!ter testing 5*isual daages7)

- $7 Date# durati"n andte%erature "! test)

6 d7 Test results 5in $ase "!daage# the re$"rdings shall +e en$l"sed with the test re%"rt7)

e7 An' "%erating %r"$edures n"t des$ri+ed in this $lause and an' a+n"ral in$idents"$$urring during the test)

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Sph Bearing Draft(09.06.11)