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Th nghim nn tnh

Cng ty C phn u t v t vn xy dng ADCOM

a ch: Tng 17, To nh 101 Lng H, ng a, H NiTel.: 84 042158835; Fax.: 84 04 5626103; Email: [email protected]

cng

th nghiM nn tnh, siu m, pit Cc khoan nhi

cng trnh: To nh tr s vn phng & cn h cao cp cho thuHng mc: Th nghim cc khoan nhia im: Thanh xun nam thanh xun h niH Ni, 10-2008

cng

th nghiM nn tnh, siu m, pit cc khoan nhi

cng trnh: To nh tr s vn phng & cn h cao cp cho thu

Hng mc: Th nghim cc khoan nhi

a im: Thanh xun nam thanh xun h niCh u tn v th nghim

H Ni, 10-2008Mc lc4I-Cn c lp cng

4II-c im cng trnh

5III-Ni dung cc phng php th nghim

51.Th nghim nn tnh

51.1. Phng php th nghim nn tnh

51.2. Cc th nghim

51.3. Thit b th nghim

71.4. Cc bc th nghim

111.5. Bo co kt qu th nghim

121.6. Bin php an ton

132.Th nghim Siu m (SONIC)

132.1. i cng

132.2. Thit b v phng php th nghim

142.3. Trnh t th nghim

142.4. Bo co kt qu th nghim

153. Phng php ng bin dng nh PIT

153.1. Nguyn l th nghim

153.2. Thit b th nghim

153.3. Quy trnh th nghim

153.4. Bo co kt qu th nghim

17IV-nhn lc thc hin th nghim

18V-Tin thc hin

23VI-Ph lc

231. Chng ch thit b

2. Chng ch th nghim vin

3. Cc bn v

cng Th nghim cc khoan nhi

Cng trnh

: To nh tr s vn phng v cn h cao cp cho thua im

: Thanh Xun Nam, Thanh Xun, H NiCh u t

: Cng ty C phn Licogi 13n v th nghim: Cng ty C phn u t v T vn xy dng ADCOMI- Cn c lp cng TCXDVN 269: 2002 Cc Phng php th nghim cc bng ti trng tnh p dc trc; TCXDVN 358:2005 Cc khoan nhi - phng php xung siu m xc nh tnh ng nht ca b tng;-TCXDVN 359:2005 Cc Th nghim kim tra khuyt tt bng phng php ng bin dng nh Yu cu ca Ch u t - Cng ty CP Licogi 13 Ti liu kho st a cht cng trnh khu vc xy dng; H s thit k c ph duyt.II- c im cng trnh

Cng trnh To nh Tr s vn phng v cn h cao cp cho thu. Mng cc khoan nhi ng knh D1200mm v D1300mm. Theo thit k ti cng trnh ny d kin s tin hnh th nghim nn tnh 03 cc bao gm 01 cc D1200mm v 02 D1300, kim tra cht lng cc bng phng php siu m 21 cc bao gm 17 cc D1300 v 04 cc 1200, vi 06 mt ct/cc. Th nghim kim tra cht lng cc bng phng php ng bin dng nh (PIT): 42 cc. V tr, khong cch gia cc cc c th hin chi tit trong cc bn v k thut do Ch u t cung cp. Ti trng th nghim bng 200% ti trng thit k, ln lt l 1900 tn vi cc D1300 v 1400 tn vi cc D1200.III- Ni dung cc phng php th nghim

1. Th nghim nn tnh

1.1. Phng php th nghim nn tnh

Phng php nn tnh cung cp mi quan h ti trng - ln ca cc nhm xc nh sc chu ti dc trc ca cc lm vic trong t nn. Cc cc th nghim theo phng php gia ti tng cp cho n 200% ti trng thit k.

Tiu chun th nghim p dng: TCXDVN 269:2002 Cc. Phng php th nghim bng ti trng nn tnh dc trc.

Th nghim c tin hnh gia ti tng cp ph hp vi qui trnh th nghim m tiu chun quy nh. Vic gia ti ln u cc c thc hin bi h kch thu lc chuyn dng thng qua mt h bm thu lc v c kim sot bng ng h p lc cho ton h. H kch thu lc m bo truyn ti trng ng tm vo u cc. Ti trng dng gia ti th nghim l h sn o bng thp bn trn c cht cc khi b tng c sn chuyn dng m bo tng ti trng ln hn hoc bng 120% ti trng th nghim ln nht. H sn bao gm mt hoc dm chnh v h dm ph. Cc u dm ph v chnh c k bng cc gi b tng m bo an ton trong sut thi gian th nghim.

ln u cc c theo di nh h thng ng h o ti bn v tr trn u cc, i xng nhau qua tm cc. Cc ng h c gn trn cc gi c lp v cc th nghim.

1.2. Cc th nghim

Theo ch nh ca thit k, cng trnh To nh Tr s vn phng & cn h cao cp cho thu s tin hnh th nghim nn tnh tng cng 03 cc nh sau:

TTS hiu ccng knh (mm)Ti trng thit k (Tn)Ti trng th nghim (Tn)

1C.B1212007001400

2C.A813009501900

3C.A5013009501900

1.3. Thit b th nghim

Do cc th nghim c ch nh ti trng th nghim khc nhau nn thit b th nghim cng c b tr cho ph hp vi tng cc th nghim. S b tr thit b th nghim c trnh by c th trong cc bn v:

. Bn v s cht ti v b tr cc thit b th nghim cc D1200 v cc D1300.. Bn v bin php lp t dn i trng

Thit b nn tnh bao gm:

1.3.1. B phn i ti

Bao gm h gi , sn o thp v cc khi b tng. H sn o ny bao gm 2 dm chnh c ch to ti nh my bng thp cng cao. Sc chu ti ca mi dm 1700 tn m bo ln hn 120% ti trng th nghim ln nht. Dm c b tr truyn ti vo tm h kch thu lc thng qua tm m thp dy. Hai u dm c k ln gi b tng. Kch thc dm chnh: thp hp 1600x55mmx10.8m

H dm ngang dng cc dm ph ch to t thp hnh H700 di 12m. Cc dm ny c gia cng to thnh sn o vng chc. Cc dm ph c t trc tip v vung gc vi dm chnh. Cc u dm ph cng c k ln hai gi b tng m bo n nh v an ton trong sut qu trnh th nghim. Trn nh hai gi , b tr theo chiu dc hai dm k H500 phn b ti trng xung gi , m bo dn u, trnh cho gi b ln cc b v qua gi n nh c h dn th nghim.

i trng bn trn dng cc khi b tng c sn chuyn dng cho th nghim nn tnh. C hai loi khi ti trng l loi ti trng 5 tn/khi (kch thc 2.0x1.0x1.0m ) v loi 2.5 tn/khi (kch thc 1.45x0.95x0.75m). Cc khi b tng b tr kho cc gc v khng xp trng mch. Tng trng lng b tng trn sn o ln hn hoc bng 120% ti trng th nghim ln nht.1.3.2. B phn gia ti bao gm

H kch thu lc ng b gm cc kch thu lc chuyn dng, tng cng sut h kch m bo ln hn 150% ti trng th nghim ln nht. H kch c t ln u cc thng qua tm m thp dy 100mm bo m dn ti u trn u cc. Tm h kch m bo trng vi tm cc.

S lng kch: dng 06 kch QF500.Dng cc trm bm BZ70-3 ca Trung Quc cng b chia c t ch to ng b vi h kch. p lc bm 65MPa. ng h p lc loi 100MPa hoc loi tng ng.

Cc thit b trn u c chng ch kim nh cn hiu lc trong thi gian thc hin th nghim.

1.3.3. B phn theo di ln

S dng 04 ng h o ln loi MUL ca Nht c chnh xc 0.01mm, hnh trnh 50mm theo di ln ca cc cc th nghim. Cc ng h u c chn g t bt vo h dm chun. H dm chun gm hai chic bng thp hp 120x60mmx6m gn ln cc chn c lp vi cc th nghim. Cc ng h o ln c t ti u cc cch u v i xng qua tm cc m bo o chnh xc ln ca cc th nghim. Cc ng h c chng ch kim nh cn hiu lc trong thi gian thc hin th nghim. Dng my thu bnh thng qua mc c nh t xa khu vc th nghim kim tra n nh ca h gi ng h. 1.3.4. Thit b phc v lp t v ph tr

S dng cu SAMSUNG c sc nng 25 tn hoc cu c sc nng tng ng phc v lp t th nghim. Cc thit b cu ang trong thi gian cn hiu lc kim nh.

Chng ti s b tr d phng mt my pht in ba pha phng trng hp mt in li trong khi th nghim.

Bng thng k nhng thit b chnh

TTThit bn vS lng

Dng cho

Cc D1300Dng cho

Cc D1200

1i trng b tng lm i tiTn22501650

2i trng b tng lm gi Tn300300

2Dm thp I700*12m nng 2,5TCi2626

3Dm hp 1600*550*10.8m nng 15TCi0202

4Dm chun thp hp 60*6mCi0202

5Dm gi 2*I500*12m nng 4TCi0202

5Kch thu lc QF-500 nng 500 KGCi0606

6Trm bm thu lc BZ70-3Ci0101

7ng h p sutCi0101

8ng h soCi0404

9My thu bnhCi0101

10Tm m thp 1.5m*1.5m*100mmCi0202

11Tm m thp 0.3m*0.3m*20mmCi5252

12My pht in d phngCi0101

13Cu 25 tn phc v lp tCi0101

1.4. Cc bc th nghim

Th t cc bc thc hin nh sau:

1.4.1. Cng tc chun b

Tp hp y cc ti liu lin quan: H s thi cng cc, h s thit k, h s kho st a cht;Nhn bn giao u cc v mt bng th nghim;Tp kt i trng thit b th nghim.

1.4.2. Lp t h kchLy v gi tim mc ca tm cc;Lp t tm m thp v tin hnh nh du tim cc ln tm m;Lp t h kch v cn chnh;1.4.3. Gia c nn, lp t gi v h sn o

Kho st nn t hin trng khu vc gi quyt nh kch thc gi;Gia c nn gi nu thy cn thit: Lp t gi , kim tra gi bng my trc c v cng dy, t dm trn nh gi ;Lp t dm chnh, kim tra bng di, ni v, cng dy;Lp t dm ph: Lp t trung tm ra pha ngoi, cc dm ph c lp ngang bng, cch u nhau;Lp t i trng: Lp t cc khi b tng ln trc, sau n cc khi nh hn. Mi lp i ti phi bng phng, vung vn, cc lp xp so le trnh trng mch, c kho gc. Cc lp i ti cng c xp t trung tm ra ngoi v tun t ht lp di n lp trn.

Nhm gim p lc cho nn t v m bo an ton cho ngi v thit b, tin hnh lp t i trng theo hai giai on:

+ Giai on 1: xp s lng i trng n 150% ti trng thit k. Tin hnh th nghim chu k 1 theo quy trnh;

+ Giai on 2: Khi bt u gia ti chu k 2, tin hnh xp phn i trng cn li sao cho i trng trn dn lun lun ln hn 120% ti trng tc dng ln u cc.

+ Tin hnh d i trng trn dn khi bt u h ti chu k 2.

1.4.4. Lp t h o

Lp t ng h chuyn v, chn dm chun, ng h v g t;Th nhy ca ng h trc khi th nghim;Lp t my trc c: Lp mc quan trc trn dm chun v mc chun;Lp t h bm, ng h thu lc: Ti v b chia, kt ni bm v kch, th h kch trc khi th nghim.

1.4.5. Tin hnh th nghim

Gia ti th n 5% ti trng thit k kim tra thit b;Gia ti thc hin quy trnh th nghim (xem cc bng Quy trnh th nghim km theo);Ghi chp s liu hin trng theo quy trnh th nghim trnh by di y:Qui trnh th nghim nn tnh cc khoan nhi D1300Th nghim c thc hin tun theo tiu chun TCXD 269:2002 v yu cu k thut ca ch u t, t vn thit k:

Cp ti trngTi trng

(Tn)Thi gian theo di v

ghi chp s liu hin trng

Chu k 1

Gia ti ban u 5% TTTK47.5Gi 10 pht, kim tra thit b

Trc khi bt u gia ti0S c ban u

Tng ti n 25% TTTK237.5Theo di n khi ln