TCVN

TCVN 6305-1 1 : 2006

I S 0 6182-1 1 : 2003

Xu5't bhn I6n 1

PHONG CHAY, CHUA CHAY -

HE THONG SPRINKLER TU DONG - PHAN 11: YEU CAU VA PHUC~NG PHAP THO

DOI v81 GIA TREO ONG

Fire protection - Automatic sprinkler systems -

Part 11: Requirements and test methods for pipe hangers

Liri noi diu

TCVN 6305-11 : 2006 hoan toan tlrdng dlrdng IS0 6182-1 1 : 2003.

TCVN 6305-11 : 2006 do Ban ky thu+t ti6u chua"n TCVNrrC 21 Thigt bbj phong

chay chila chay bi6n soan, ~ 6 n g cuc Ti6u chua"n Do lcrilng Chi't I q n g de nghj,

86 Khoa hoc va C6ng nghg ban hanh. * TCVN 6305 Phbng chiy, chiia chay - He th6ng sprinkler ty dong bao gbm c i c

phsn sau:

Phsn 1 : Ygu c$u va phlrdng phap tho d6i vdi sprinkld.

Phsn 2 : Y6u c3u va phlrdng phap tho d6i vdi van bao dong kigu Udt, bu6ng

ham va cd c5u bao dong ki6u nlrdc.

Phan 3 : Ygu cau va phlrdng phap tho d6i vdi van 6ng kh8.

Ph6n 4 : Y6u csu va phlrdng phap tha d6i vdi cd ca"u md nhanh.

Phsn 5 : Y6u cau va phlrdng phap tho d6i vdi van tran.

Phan 7: Y6u cau va phlrdng phap tho d6i vdi sprinkler ph6n ilng nhanh ngan

chgn sdm (ESFR). -

Phin 11: Y6u c$u va phlrdng phap the d6i vdi gia treo 6ng.

Phong chay, chaa chay - HHg th6ng sprinkler tg dQng -

Phfin 11: YBu c l u va phlrdng phap thh d6i vdi gia treo 6ng

Fire protection - Automatic sprinkler systems - A

Part I 7: Requirements and test methods for pipe hangers I . r . * 1

I Pham vi ap dung . . * /

a -' .

Tieu chua"n nay qui djnh cac yeu cau ve tinh nang, phudng phap tha va ghi nhiin doi vdi g ~ h ireo 6ng. - ,

, \

2 Tai lieu vign d in I -

IS0 1460, Metallic coatings - Hot dip galvanized coating q p ferrous material - Gravimetric

determination of the mass per unit area (Ldp phir kim loai - Ma k9m n6ng tr6n vat lieu sat - Xac djnh

kh6i Ilrdng tren met ddn vj dign tich bAng phudng phap trong Iqc).

IS0 2064, Metallic and other inorganic coatings. - Definitions and conventions concerning, the

+pleasurements of thickness (Ldp phd kim loai va cac ldp ph6 v6 cd khac - Cac dinh nghia va qui Udc

ve cac phep do chi& dsy).

TCVN 5878 (IS0 2178), Ldp phb kh8ng t i l tinh tren ch5't ndn t i l tinh - Do chidu d6y ldp phd - Phudng

phap t i l tinh. I )

IS0 3575 : 1996, Continuou~ hot- dip zinc- coated carbon steel sheet of commercial, lock- forming and

drawing qualities (Thep tgm cac bon ma kern nong li6n tuc co chst Iugng mang tinh thlrdng mai a trang

thhi can va keo tao hinh).

TCVN 6525 (,IS0 4998 : 1996), Thep tgm cac bon k6t cca"u ma kgm nhling nong lien tqrc. . .

ASTM 8568, Standard test method for measurement of coating thickness by X-ray spectrometry :

(Phlrbng phap thir ti6u chudn d6 do chidu d6y ldp phlj b h g phudng phap trsc phd tia X).

TCVN 6305-1 1 : 2006

3 Thuijt ngava d]nh nghia

Tidu chudn nay ap dung cac thugt ngil va djnh nghia sau:

3.1

Quai treo (band hanger)

Ki6u gia treo di&u chinh d ~ ~ c co s$ dung mQt dhi thep det bao quanh 6ng.

3.1.1

Quai treo xoay di6u chinh dudc (adjustable swivel hanger)

~ i 6 u quai treo di&u chinh dwc va c6 khdp xoay.

3.2

Gia treo c6ng x6n (bracket)

GiB treo ki6u d6m c6ng x6n duqc g i n chat trqc ti6p viri b6 rnijt theng d h g cba d u tr"c c6ng trinh. 0

3.3

BQ ph$n li6n k61 vdi c6ng trinh (building attachment component)

BQ ph$n kep gia treo (support fixing)

BQ phgn cba gia treo d~fqc g$n chgt vao tudng hoijc trdn d6 kep gia treo.

CHO TH~CH: BQ phen lien k6t vdi c6ng trinh c6 the 19 cai kep dUgc vgn (dbng), coc neo giin n6 (vit n6), coc neo

tao ranh chln ho#c d6 kep duc vAo be tdng.

3.4

D6 kep duc vao be t6ng (cast - in insert)

~ i 6 u bQ phan IiGn kgt vdi c6ng trinh Bwc duc vao bd t6ng tgi thdi di6m b6 t6ng chlra b6ng c h g .

' 6- CHU THICH: €19 kep duc vao b& t6ng c6 the I& thep chCf U vdi bu long dUgc cet ren chuyen dirng ho#c bng n6i

c6 ren trong dd nbi ghep vdi bu long thdng thdng. ,., 1.- . - 1 ;

3.5

Bich n6i tr6n trdn (ceiling plange) . >; I

phgn e n k6t v&i c6ng tn'nh cOa gid ti& dm &n chijt tryt ti6p v6i mijt t k n cGa d u tnjc d n g tn'nh.

3.6

06 k 9 ~ (clamp) I - ,

~ i d u d$ gi& lien k6t vdi c8ng trinh d w c kep chijt c h g v h g vbi met blch cSIa mot be phgn ca"u truc'

O6 hai m6c kep (beam clamp)

D6 kep dugc kep chet c h g v h g b h g hai moc kep viri mat day bich cba bQ phan ca"u truc bsr~g thkp.

TCVN 6305-1 1 : 2006

06 kep ch8 C (C clamp)

B@ phgn lien ket vdi c6ng trinh kep chgt mat bich bang lien hup m6 cgp va vit.

3.6.3

06 kep 6ng dimg (riser clamp)

Ki6u d6 kep bng dung de" d8 bng dihg tai cac mac cao khac nhau. tl (Pt ' i , -

3.6.4 . \

06 kep mat dinhlday bich (toptbottorn clamp)

D6 kep ding de" kep chgt c h g v h g tai rnQt vj tri cda mgt dinh hogc day bich cda b6 ph3n ca'u truc

b8ng thep.

4.7 Quai kep ch2 U (clevis attachment)

~ ie"u bQ phan kep 6ng c6 quai ki6u ch9 L'.

3.8

Vong kep chU U (clip)

BQ phan kep 6ng thlldng g6m mot chi ti& va kh6ng dieu chinh dL(dc, chi 6m li'y met phin chu vi 6ng va

co the" dlldc g i n chgt trqc ti6p vdi cAu truc cbng trinh.

04u n6i (coupler)

Chi ti6t cc6 ren dirng d6 n6i bQ phan lien k6t vdi c6ng trinh vdi c6u n6i.

CHU TH~CH: E)$u n6i c6 thg c6 ren ngohi hogc ren trong (thlldng la ren trong) va co th6 c6 c h g mat dlldng kinh

m e n tren sub chi& dY hogc c6 hai dudng khdc nhau d n6i b$ phan lien kgt vdi cBng tdnh vA,c$n c6 c ic kich

thlldc khac nhau.

3.10 .,.,, 1 I ,

Cdi kep dude v$n (ddng) (driven fastener)

Kie"u bQ phan li6n ket vdi c6ng trinh duqc v$n (dong) vao be t6ng dG dbng c h g hoac ket cca" thep bang

dung cu chuyen dhng, c6 sq tham gia cira bet b6i trdn, va c6 th6 c6 ren trong hoac co ren ugoai de" n6i 4 t

vdi &n th6ng qua d6u n6i.

Cgc neo giin n& (expansion anchor)

Kie"u bQ phan lien k6t vdi cbng trinh &fgc l i p vao 16 tru tq khoan ho$c d w c khoan tir trudc trgn tran

hogc tlldng c6a cgu trlic c6ng trinh chi ti& cco" anh tren tran thudng 18 dang 6ng kep co ren trong "bie"n

dang c6 kie"m soat " bj gi in nd do truyen dong cSra coc nong hogc truy6n dong cfia 6ng kep tren cqc

nong.

TCVN 6305-1 1 : 2006

C H ~ TH~CH: Cac chi ti& ccd dinh tren tudng co thd la coc neo co 6ng kep hogc coc neo co " momen xo$n ki6m

soat duqc" hogc cac buldng (6 d6 dng kep gi5n n6 d w c nong ra khi sigt chgt bul6ng ho$c coc neo c6 vb bao (6

d6 coc neo d w c nong ra khi si6t chgt bul6ng).

3.13

Gia treo (hanger)

Cum cac bQ ph$n dudc slll dung tach biet hogc ke"t h d ~ vdi cac cum khac dGng dd da dudng bng.

CHlj TH~CH: Gia treo c6 th6 bao gem met bo ph$n lien kgt vdi c6ng trinh (be ph$n kep gia treo), d i u n6i, cau

hogc chi ti& Wdng tC, va be ph$n kep 6ng nhu chi d8n trgn Hinh 2, hogc gia treo co the" bao g6m met gia treo

c6ng x6n ddn giin va be ph$n lien k6t vdi c6ng trinh (be ph$n kep gia treo) nhu chi d8n tren Hinh 3.

3.14

V$t lieu kh6ng nhay cHm vdi nhiet (non - heat sensitive material)

V+t lieu m i dQ bzin kCo do dudc 6 (540 k 10) "C t6i thidu bang 90 % gie trj dQ b6n kCo do dudc 6 F (20 k 5) "C.

Be phgn kep 6ng (pipe attachment components)

B@ ph+n cha gia treo trgc tigp kep gi3 6ng.

Xem Hinh 2 va 3.

Dai giit d6 kep chit C (retaining strap)

B@ phgn lien k6t vdi c6ng trinh thudng d w c che" tao t i l gisi thep b3ng va dmc d ing ke"t hdp vdi d6 kep

chil C de" giil d6 kep nay 21 vj tri. !

3.17 I 4-

Vbng treo (ring)

Gia treo 6ng bao quanh toan bo chu vi 6ng nhlhlg kh6ng kep chgt vao 6ng.

3.17.1

Vbng treo li6n (solid ring) t ,

Vbng treo phai % t ~ c 14p trllQt vao tit dhu mut 6ng va kh6ng th6 ma ra d w c 6 b$t ky mirc nao d6 kep

chet v8o 6ng sau khi dudng 6ng BZi dugc che" tao.

3.17.2 , I

VQn$ tmo d d m (split ring)

Vong treo co the ma ra Bugc 8 mot mitc nao do d6 cho phep lap vao dud- 6ng sau khi dudng 6ng dSi

8- ch8 tao.

'TCVN 6305-1.1 : 2006

Vong treo co khdp xoay (swivel ring)

Vong treo lien hoec vong treo mb d~@c co khdp xoay tr6n dinh de" cho phep nbi vong treo vdi thanh

treo sau khi da dlldc lap dat vao bng.

3.18

Coc neo co rinh chin (undercut anchor)

~ i 6 u bQ phan lien k6t vdi c6ng trinh d@c l i p vao I6 tq khoan hoac 16 di3 dugc khoan trllCIc cC; r5nh chan

tr6n tran ho$c tlrtrng cira ca"u truc cdng trinh.

CHO TH~CH: Vigc 13p dgt coc neo thlldng dlldc thvc hien bing cach dbng vao v6 bao th6ng qua mat chi ti6t hhih

c6n de" ep v6 bao vao r3nh chAn, tao ra s q kh6a lien d@ng cd khi v8i v$t lieu n6n. Cac coc neo nay d ~ p c ding

cho vbng chju keo clia b6 tbng, nghia la be t6ng c6 the" bj ran nljt. * 4 Tinh nhgt quan cha s l n pha"rn

Nha sAn xugt phAi co trach nhiem thgc hien chlldng trinh ki6m tra chgt Imng d6 b60 d im r5ng s in

phim lien tuc dap h g d q c cac y6u cau cba ti6u chugn nay the0 cach kidm tra tlldng tq nhll d6i vdi

cac msu tho ki6m tra ban d6u.

I

5 Vat lieu va kich t h ~ d c thanh treo

Gia treo va cac be ph$n cba gia treo phi i dlldc che" tao t i l vat lieu s i t hogc tic v$t lieu khdng nhay

c im vdi nhiet khac. * 5.2 Ca kich thudc than h treo

5.2.1 Gia treo va cac bQ phan cba gia treo phi i dugc cung ca"p cdng vdi cac ca kich thudc thanh treo

phir hdp vdi Bing 1 trir khi cb qui anh khac d w c n9u trong 5.2.2 dgn 5.2.4.

5.2.2 C6 the" so dung cac cd kich thclac thanh gia treo 8 mm trong cac qu6c gia ma ti6u chuan nha

nude cho phep sir dung cac ca kich thudc Bng den va bing DN 50. Cac gia thanh treo 8 mm phi i dap

h g cac y9u cau ve t6i trong c6a Bing 1 d6i vdi ca kich thlldc 6ng DN 50.

5.2.3 Cac ca kich thlldc thanh gia treo d w c n6u trong Bing 1 la cac d&ng kinh danh nghia k6t hdp

vdi ren dUdc gia c6ng. D6i vdi ren can, d d n g kinh cfia thanh treo kh6ng dllw nh6 hdn dlldng kinh cba

chsn ren.

5.2.4 Met so" cum cba gia treo nhll cai kep B q c v$n (dong) c6 sg tham gia cda bot b6i trdn va cac v6

giin nd co kich thudc 6 mm va 8 mm c6n so dung d6u nbi chuydn tiep de" n6i vdi thanh treo co ca kich

TCVN 6305-1 1 : 2006

thlldc danh nghia 10 mrn. Cac d6u n6i chuygn ti6p do nha shn xuat cung cap phhi c6 d i do ben de"

chju dwc thi trong tho ap dung cho ca kich thllClc 6ng ldn nhat cho phep.

5.3 Bich n6i tr6n tr6n

Cac bich n6i tren tran d6i vdi cac ca kich thcrClc 6ng d6n DN 50 phhi co it nhat la hai 16 vit d6 .D6i vdi

cac ca kich thlldc 6ng d6n DN 200 (NPS 8) phhi co kh6ng it hdn ba I6 vit da.

6 Chi& d i y vat lieu

6.1 Chi& dsy vat lieu kh8ng co ldp ph6

6.1.1 Thep det khong co ldp phd bho ve co chieu day kh6ng nh6 hdn 3 mrn d g c sir dung lam gia

treo ki6u quai kep chi3 U, quai treo di6u chinh d w c co khdp xoay va c i ~ c gia treo bang thep det khac,

n6u gia treo c6 chi6u rQng t6i thigu bing 25 mrn va co dQ b6n t6i thi61~ phhi beng 150 % thi trong tho 4i'

yeu cau dwc qui djnh trong BHng 1.

6.1.2 C6 the" slSI dung d6 kep chB C dwc ch6 tao co chi& day kep, kh6ng nh6 hdn 3 mm va d~fgc

che" tao tir thep kh6ng co ldp ph i b8o ve d6 tao ra tigt dien d6y 6 mm ne"u d6 kep nay co do b6n t6i

thi6u ph8i bing 150 % thi trong thir y6u cau dwc qui djnh trong BQng 1.

6.1.3 Co th6 sir dung d6 kep thep dap duc vao be t6ng dllgc che" tao t i l thep kh6ng c6 ldp phd b8o vi5,

c6 chidu day khdng nh6 hdn 3 mm n6u d6 kep nay tuin the0 t8t cac ygu csu khac.

6.1.4 N6u gia treo hoac bQ phan cda gia treo d w c che" tao t i l thep det thi chi& day cda thep t6i thigu

phhi bing 4,8 mrn.

6.2 Chieu dsy vat ligu co 16p ph6

Gia treo hogc bQ phan c ia gia treo phHi c6 chi& day nh6 nhat bing 3 rnrn vdi didu kien la phhi c6 ldp

phb bho vg ch6p nhan dwc. Ldp phd chgp nhGn dgdc nhU sau: r. I

a) Idp phfi kem c6 chi& day nh6 nhat 12,7 pm tren t6t c; cac b6 mat ngoai va 7,6 pm tren t&t ch cac

be mat trong; hogc ) \ ,

b) 16p phd tren t$m thep ma kgm n6ng lien tuc 2180 nhu qui djnh trong BHng 3 TCVN 6525 : 1999 I ,

hogc Bhng 2 IS0 3575 : 1996, hogc ;

C) Idp phb kim lo# hoac phi kirn loai kh6c hoic kkQ hgp cba c6 hai 16p phfi nay khi 'dua vho tho so . ,

sAnh sg nhgn dgdc do bQn chdng an mon tlldng dmng vdi a) hogc b). I

Chi& dsy ccb ldp phSl dudc x6c anh p h i hdp vdi 8.1.

Thep det co ma phir, chi& reng kh6ng nh6 hdn 1,5 mm d!fdc dirng Iarn gia treo kigu cha U, quai treo,

quai treo didu chinh dugc c6 khdp xoay, va be phgn cGa cac gia treo thep det khac cho cac 6ng c6 ca

kich Ihf6c 50 mm hoijc nhb hdn vdi di6u kien la gia treo c6 ben t6i thigu bhng 150 % t i i trbng tho

yeu c6u dll* qui anh trong Bhng 1.

ThCp det cd ma phd, chieu iong kh6ng nh6 hdn 2.5 mm dude ddlng l~rn'g'ih treo Kleu cnu u, qua, il-eo,

quai treo di6u chinh dUgc c6 khdp xoay. va bQ phgn c i a chc gib tre&'th&det khac cho c icbng c6 ca

kich thcfdc ldn hdn 50 mm vdi dieu kien la gia treo cb do b6n t6i ?hi& b h g 150 % tiii tcopg thi(,ygu cau .... ".

d@c qui djnh trong B&ng ? . > , . , ! ( - , ' I , . - , . ,

7 YBu ca"u v6 tinh ning

7.1 Y8u csu chung

Gia treo 6ng hoijc be ph+n lien k6t vdi c8ng trinh phsi d m tha the0 cac y6u cau cha %ng 1-khi,sir dung

cac gia trj d6i vdi ca kich thu'dc danh nghia ldn nhgt cha dudng 6ng thich h g vdi gia treo ho+c sSI dung

t&i t r ~ n g Ibn nhgt cha ca kich thlldc c6n ldn nhi't co the" Idp d w c vbi gia treo, lay gla tynao 16n hdn.

m 7.2 Y8u cau ve keo va dQ giin dai

7.2.1 Khi tho phir hop vdi 8.2, gia treo dZi duqc d$t t6i trong ban d6u ph6i chIu duuc t i i trong .tRir dp

g~an dai chon the0 Bing 1 trong thbi gian 1 min ma de giZn dai kh6ng vUdt qua 5 mm.

Ngoai I+ - Kh6ng cho phep co d@ gi5n dai d6i vdi cac bQ ph$n li6n k6t vdi c6ng trinh khi cac bQ ph$n nay

kh6ng duqc cung cap cung vdi vong kep ch3 U ho$c dai giQ d6 giQchung chec chhn vdi cgu trOc c6ng trinh.

Bing I - Yeu c6u d6i vdi t i i trong tha keo

Thi trong b,

thh y6u 6 . 6 ~ ' 7 N

3 400 3 400

I '3 400 3 400 3 400 4 168 4 707

5 390 6 669 ,

8 924 10 000

Ca klch thudc danh nghia

cGa 6ng DN 20 25 32 40

50 6 5 80 90 100 125 150 pp

200 250 300

Thi trong ") thh d@

giin dai N

1 700 1 700 1 700 1 700 1 700 2 084 2 354

2 795 3 334 ,

4 462 5 884

Dudng klnh ngoai cha

6ng mm 26,7 33,4 42,2 48,3 60,3 76,l 88,9

101,6 114,3 139,7 168,3

a) Tlldng dlldng vdl 50 % cira 5 IAn trong I q n g met 6ng thep ca 40 chQa d i y nudc cao 4,6 m cQng vdr kt161 lugng c6 dinh 115 kg.

b) Tuang duang vdi 5 dn trong Illdng met 6ng thep co ca 40 choa day nudc cho 4,6 rn cgng v61 kh6i lwng

co"4nh 115 kg.

11

21 9,2 17;OOO

Ca kich thudc nh6 nhzt cfia

csn treo rnm

10 hogc 8 10 hogc 8

10 ho$c 8 10 ho$c 8 10 ho$c 8

10 10 10 10 12 12

273,l 323'9

Ti i trong dgt t rudc

N 100 150 200 250 350 539 785 883

1 128 1 569 2 109

16 16

5 002 6 816

13,019 17 481

20 000 35 158

TCVN 6305-1 I : 2006

7.2.2 Sau phep th8 do gisn dai, gia treo 6ng phii chju dqdc tsi trong thb yeu csu qui djnh trong

Bing 1 trong thdi gian 1 rnin ma kh6ng bj pha hug, bj nho" ra ho$c b! tach rdi ra hoan toan.

7.3 00 kep duc vao bt t6ng

Khi thb the0 8.3, cac gia treo 6ng va phgn lien k6t vdi c6ng trinh d$t trong be t6ng ph6i d@c Isp d$t

sao cho gio"ng hgt nhll I$p dgt trong t m te" sb dung trong cac kh6i be t6ng. Gia treo 6ng va be ph$n

lien k6t vdi c6ng trinh phsi co kh; nang ch!u dlldc thi trong thb qui d!nh trong Bgng 1 trong 1 min ma

kh6ng bj pha hug, bj nh6 ra hoec bj tach ra hoan toan.

7.4 Y6u cdu v6 rung

Khi thb the0 8.4, c2ic vd gian na (bao, vd, ho$c try), &i kep dwc v$n (dong) c6 sq tham gia cira bot b6i

I I la trdn, ch6t han, d6 kep chQ C khong dm trang bj dai oc ham hoac dai gi3 va cac girj treo b& kI;j/ kh6c --I

kh% n2ng duy til lqc gi9 chet khi l ip c6 the" thay d6i, phii d w dung trong thdi gian 100 h d t i n so" 35 Hz

vA bien do (0,825 + 0,05) mm va phsi tGn thd cac yeu csu ve do gian dai va k60 qui dinh trong 7.2. F"

7.5 Y6u cdu b i o v@ d6i vdi dong dSt

Cac bQ ph+n c i a gia treo c6 tinh nang chuygn dung cho sb dung & cac vung c6 nguy cd dong ddt cao

phAi tho% rnin phep tho trong 8.5.

8 . PhUdng phap tha

8.1 ~ i d m tra chi6u d6y c6a ldp ph6 kim loai (xem 6.2).

8.1.1 Qui djnh chung

Ph6i ap dung c6c qui udc va djnh nghia li6n quan de"n viec do chi& d%y ldp phfi trong IS0 2064. C6 . th6 xac d]nh chidu day Idp phG bsng met trong cac phlldng phap dudc neu trong 8.1.2 de"n 8.1.4. ,

I

Phlldng phap slIl dung ph6i co sq thoA thuan cda cac ben co lien quan:trong t m n g hgp co sq tranh cSi

thi phi i sb dung phlldng phap d q c ngu trong 8.1.2.

8.1.2 X&c d/nh kh6i Iwng trGn mQt a n vj dien tich bang phuang phap c&n

Kh6i lwng tren mot ban vj dien tich cfia 16p phSl kl?m ph6i W c xac djnh the0 phwng phap m6 t i trong

IS0 1460.

8.1.3 Oo chiiu ddy Idp phi bdlng phudng phap tr&c phd tia X

Chibu ddy Idp phd phi i d m xac djnh theo phmng phap rn6 t% trong ASTM 8568 hogc phlldng phap

twng dtfdng khac.

8.1.4 Xbc djnh chi& ddy 16p ph6 dlng phucrng phap ttf tinh

Chi& d6y lap phd ph$i dllqc xac djnh the0 phudng phap rn6 t6 trong TCVN 5878 (IS0 2178). Cac

dung cu do phi i du'gc van hanh va lieu chuin the0 hudng dAn cfia nha s in xua"t.

8.1.5 Cac phuang phhp Khac

Co th6 sir dung cac phuang phap khac vdi dieu kien la cac phUang phap nay dap h g dUqc cac yiru

cau chung dugc neu trong 8.1.1.

8.2 Thanghigm d6i vei thanh treo va b$ ph+n kep 6ng (xem 7.2)

8.2.1 dgt cac thanh treo mau va be phgn kep 6ng vao thikt bl tho keo - nen sao cho gi6ng het

nhu khi l ip dgt trong thqc ti; sif dung.

8.2.2 May thir d q c v$n hanh d t6c do dG d6 tao ra do gian dai clja msu thb d m0c 1,27 mmlrnin.

8.3.3 Cac gia treo khac vdi d6 kep 6ng d h g c6 lqc giii chgt phu thuQc vao sq xist chgt clja bulhg,

dai 6c, dui xoay, dai 6c ham, vit cgy hogc chi tist co ren gia c6ng ca hogc ren can khac cdn dwc lap

vao thi6t bbj the va dugc tho khi cac chi tiet co ren da siet chagi tdi cac; momen xoan v a n chgt qui djnh

%trong BBng 2.

8.2.4 Do kep 6ng ddng duac sigt chgt tdi rnomen xo5n van chgt do nha s i n xugt qui djnh trudc khi

tho,

Bing 2 - Momen xoin v+n chgt cac chi tiel ren

8.3 Tha nghiem d6i vdi cac be phgn lign ke"t vdi cang trinh (bQ phgn kep gia treo) (xem 7.3).

8.3.1 Kh6i be t6ng qui djnh trong 7.3 phii c6 kich thudc t6i thie"~~ 350 mm x 350 mm x 200 mm, dlFc

lam tir hdn hdp 'mot phdn xi rnang paoclan, hai phan ciit vang va b8n ph6n da v8i dap nhb ho+c s6i

hogc mot hhQn hap cSla cac thanh ph6n trkn de" do b6n nen 28 ngay sg dat tic 17,2 MPa d6n 20,7 MPa,

CU kich thudc ren

va dugc gia cudng bhng 8 thanh thep 6,4 mm. Ben thanh thep dlldc d+t trong c6p pha c6a kh6i bbg t6ng

trong mot mmgt pheng song song va cach dinh clja c6p pha 38 mm. Mdi be b6n thanh thep dugc b6 tri

trong c6p pha sao cho m6i mgt trong b6n mgt c6a c6p pha c6 met thanh thep dudc d$t cach mat nay

75 rnm (xem 7.3). 13

mm

8

Momen x o h v$n chgt

in

1 I4

N.m

4,52 i i

Ibf.in 1 40

8.3.2 Cac do kep dljc vao b6 tdng ding lam rnau thir phai d@c duc vao cac khoi be tong (mot do kep

cho mot kh6i be teng), va cac kh6i be tdng dwc phep d6ng c h g t6i thi6u la 28 ngay. Sau thdi gian

nay, cac kh6i b6 t6ng da duc vdi d6 kep dlldc ldp vao may tho va cac dd kep chju tac dung cda thi

trong tang d in tdi khi dat dude tsi trong yeu csu nhu qui djnh trong Bsng I. Cac gia do c6a may thl'l

dudc dgt cach dudng t5m cGa coc neo met khoing kh6ng nh6 hdn mlrai Ian dlrang kinh cica coc neo.

8.3.3 Cac v6 gi5n nb (bao, v6, hoec tru) ph6i dude lip dat be" tha tinh ning trong cac kh6i b6 t b g

(m8i v6 gi5n n6 trong w@t khoi be tdng), sau khi cac khdi be t6ng d3 d6ng c h g trong thdi gian t6i thi6u

la 28 ngay. ~ 8 i vb giin nh dirng lam msu thO phsi dwc I6p dat the0 cach va chieu s5u do nha shn

xui't qui djnh.

8.3.4 Sau viec lap dgt cac mau th13 trong cac khdi b6 t6ng, mdi khdi be t6ng d i lap vdi mau tho phii

dwc gi9 chat b vj tri tr6n may thir va ch!u tac dong cua ra~ Irony lany " & I ti k; 1; i ig i ti;+ :a; ;i+-ty

cau nhu qui djnh trong B h g 1. Ip"

8.3.5 Cac msu tha cho cai kep, bao g6rn c i @p dwc v$n (d6ng) co sy' tham gia clia bot b6i trdn

d q c thi& ke cho SO dung trong be t6ng phsi dwc v$n vao cac kh6i be t6ng qui djnh trong 8.3.1 phi

hdp vdi hddng dsn lap dgt cda nha sAn xui't.

8.3.6 ~ d i cai kep thh dhng trong b6 t6ng dwc vgn (dong) vao be t6ng de"n toan be chieu s iu cda

c6n va sau do chju tac dong cda t6i trong tang d6n. do thi6t bbj c6m tay hogc cac thiet bbj khac tao ra, tdi

khi dat dwc t i i trong ygu cau nhtf qui qnh trong BBng 1.

8.3.7 Cac mau tho cGa cai kep dbng trong thep dugc vgn (dong) vao cac thep d&i co chi& rang thich

hap, chieu day 8 mm, 10 mrn, 12 mrn, 16 mrn va 20 mm va de cling (Brinell) kh6ng nh6 hun 140 hoac

Idn hdn 240. M8i msu tho phii xuyen vao toan bQ chieu s i u cSra can tdi khi di6rn nh6 ra ngoai be mgt

b6n dlfdi cila tgrn thep khosng 3,2 mm. Sau do cai kep phsi chju tac deng cGa t8i trong tsng d6n tdi-

khi dat dwc thi trong y9u csu nhtf qui djnh trong BQng 1. 6'

8.3.8 Cac ch6t (vit) han phii ggn ch$t vdi cac ta"m thep co chi& d6y kh6ng nh6 hdn 4,8 rnm va cac

kich thdc khac thich hdp cho lap dgt tr6n may tho dQ ben. Cac m iu thSr ph& dwc g in chgt vdi tsrn

thep bsng dung cu va phudng phap do nha s8n xu& yy3u c6u. Sau do rngu tho phsi chju tac deng cda

t i i trong tang d6n tdi khi dat duqc t i i trong yeu c6u nhtf qui djnh trong B h g 1.

,8.4 Thi? rung (xern 7.4) j

8.4.1 fMi v6i tic phep tho nA)i b*n.dO Utfdc xac djnh la djch chuygn tan nh6t c h chuy6n dong hinh

sin tilvi'tri nghi hoac mot n h d*iEhuye'n t6ng cda ban may. n .

8.4.2 Gia treo d q c tho d6i @i m8i ki6u hogc loat phsi co ca kich thlrac nhb nh6t.

8.4.3 B@ ph$n gih treo thtfdng w c l i p trong be t6ng nhu bao (v6) gisn na hoec cai kep d a c v$n

(d6ng) c6 s q tharn gia cba bet b6i trdn,dudc 15p trong kh6i b6 tdng nhu qui djnh trong 8.3.1 '~41 khdi

I A

Iwng xi'p xi 60 kg. Gia treo va kh6i be tdng dlldc 16p tren d6 ga thd sao chc g iy ra cho kh6i be tdng

dugc thd thi trong va gia treo chlu tac dong.

8.4.4 Gia treo thlldng dude van (dong) vao, d q c han hogc d@c gan ch$t vdi thep b2ng ~ 6 c h khac

can dude l i p dat tr6n d6 ga tho rung theo cach di3 dudc so dung d tren. Nbi ghep vdi gia treo mot can

chju d q c thi (trong) th3 60 kg.

I 8.4.5 0 6 ga tho cung vdi ga treo va t& tren gia treo d e c lap d vi tri thang d h g tren thiet bbj tho rung

I va dude rung the0 phlldng thing d h g

C l ~ m gi5 treo nhsi dude k e ~ chi% dd chiu tac d6na cha tAi tronq thing d h g bing trong lmng cha met

"ng chira da"y nudc dai 6 rn va c6 ca kich thudc ldn nhi't co the" d w c dung cho cum gia treo. D6i vdi 3 cac cum gia treo c6 so dung can hogc tru da thi chieu dai cha can hogc tru d6 la chieu dai Idn nhi't cc6

the" d w c sh dung cho cum gia treo. Tac dung t i i trong bsng hai Ian thi trong thing d h g vao cum gia

treo tai didm dgt t i i cho 6ng tren hai phia d i u 6ng the0 cach luin phien nhau, trong met tram chu ky

vdi t i n so" xa"p xi tan so" thqc cllra met con I8c dGc bidu thj bsng chi& dai gia treo. TAi trong tac dung

dwc tao ra bai mot thi8t bj kigu pitt6ng d& g i y ra djch chuydn ngang neu nhu kh6ng bj chn lai. Lugng

dich chuydn ngang phii b2ng met phin ba chieu dai gia treo. D6i vdi cac cym gia treo kh6ng d6i x k g

truc, phii I$p lai phep the vdi cum g~a treo quay di 90 O. Cum gia treo phi i chju dlldc hogc thlch nghi

i dugc vdi chuygn dong rna kh6ng bj nin hoijc p h i hhy.

9 Ghi nh5n

.I Gia treo

KhBng ghi nhPn cho thanh gia treo.

Khi ghi nhPn cac be phan gia treo du* tho vdi 6ng c6 ca kich thudc Idn nhgt c6 th6 thich h g vdi cac

L f

be phan nay thi kh6ng cAn ghi c6 kich thudc ldn nM't cica 6qg.

Cac bQ phen cSla gia treo khac vdi cac bQ ph$n dii n6u tr6n phhi d ~ v c ghi nhin r6 rang ten hogc nhPn

d n phdm, vat lieu hoijc cac di6u kien tuang tq cdn duqc ghi tren hgp cact6ng bao goi hoac cac d6

c h h khac n8u s6n pha"rn dude bao g6i cho tra hang bsng tau thhy.

9.2 Ghi nh5n nha may che'tao

1 N&u thigt bb/ gia treo 6ng d w c ch8 tao tai nhigu nha m6y chb tao thi m8i bQ phan c3a g i i treo phhi c6

TCVN 6305-1 I : 2006

a) D6 kep hai rn6c kep b) €I6 kep 6ng d h g c) Vong kep cha U d) €I6 kep van niing vdi mgt dinhlday binh

9 Vbng treo g) Vbng treo h) V6ng treo i) Quai treo j) Quai treo li6n khBi c6 m6 d w w liQn chU U khdp xoay khdp xoay

e) Quai treo xoay di6u chinh duoc

6- I) Gia treo m) 06 kep doc n) V6 gian nh o) Cai kep p) D6u nbi q) 06 kep chi3 C

c6ngxdn Vho bb t6ng (bao, v6, tru) buqc ven (b6ng) c6 bai giii hogc dai 6c

Hlnh 1 - MQt so" ki6u thi6"tbj gia treo o'ng

'TCVN 6305-,I i . 2006

CHU DAN:

1 Tr$n

2 60 ph+n li2.n k6t vdi c6ng trinh (be phan kep gia treo)

3 E)$u n6i

4 Thanh treo

5 60 phan kep 6ng

6 Gia treo

Hlnh 2 - Db gia treo 6ng - Db ga tr6n sanltl&ng

TCVN 6305-1 1 : 2006

CHO DAN: 1 Be phgn kep gia treo kidu &ng x6n (be phen kep gia treo)

2 Ttrdng

3 BQ phgn kep 6ng

4 Gia treo cdng x8n

HSnh 3 - D6 ga giB treo 6ng - 06 gB t r h tdng

TCVN 6305-j 'E : 2006

Dimensions, tolerances and designation (Ren ong khi moi noi kin thuq lqc du'uc lam bsng ren -

I Phan 1 : Kich thclac, dung sai va ky hieu).

I [2] IS0 49 : 1994, Malleable cast iron fittings threaded to IS0 7-1 (Phu tung bang gang duc d6o

du'dctao ra the0 IS0 7 - 1).

:SO 65 : 1981, Carbon stee! tuSer suitable fnl screwing i~ ?ccnrdanca with IS0 7-1 (ong th6p

cac bon thich hdp cho viec cdt ren vit p h i hdp vdi IS0 7-1).