Prestressed Concrete Strand Nqe lus piav qhia:
Prestressed qhob strand (PC Strand). Cov khoom lag luam feem ntau yog siv rau kev siv cov pob zeb prestressed reinforced. Xws li cov choj loj ntawm txoj kev tsheb ciav hlau thiab txoj kev loj, nyiaj siv ua haujlwm crane kab teeb, pob zeb-av anchoring Projects, ntau zaj dab neeg muaj tsev, chaw ntau pob, thee mines, thiab lwm yam. Cov khoom lag luam tus qauv: GB / T5224, ASTMA416, BS5896, JISG3536, ISO69318, EN los yog lwm yam kev cai tshwj xeeb uas yuav tsum tau muaj.
1x7 prestressed steel strand, tsis tshua muaj kev ntxhov siab ua ntej steel strand yog tsim los ntawm 7 xov hlau, nws muaj cov yam ntxwv ntawm lub zog tensile siab thiab so qis heev, uas ua rau nws tuaj yeem hloov cov tsoos deformed steel bar zoo, thiab txuag tau ntau cov khoom siv hlau. Lub caij no, nws ua kom ntev-ntev pob zeb tsim ua tau.
Siab tensile lub zog, tsis tshua muaj so, ruaj khov modulus ntawm elasticity, kev ntxhov siab-relieved, ruaj kev sib txuas nrog pob zeb, tsis tshua muaj kev ntxhov siab, ruaj khov kev tsim kho, zoo ua ke nrog steel reinforced qhob; txuag cov ntaub ntawv, txo cov distortion thiab kev tsim kho qhov hnyav, ua kom puas ntsoog, dej tsis kam, nruj.
Prestressed Concrete Strand Feature:
1. Lub PC steel strands peb muab ua raws li cov qauv txheej txheem xws li GB / T 5223, GB / T 5224, ASTM A-416, BS 5896, JIS G3536, lossis cov qauv kev pom zoo los ntawm cov neeg siv khoom thiab peb.
2. PC Strands kuj muaj nyob rau hauv ntau yam ntaub ntawv rau pre-tensioning los yog post-tensioning daim ntaub ntawv nyob rau hauv cov ntaub ntawv dawb los yog galvanized xws li 3 xov hlau, 7 xov hlau, 19 xov hlau thiab compact tsim.
3. Txuj: GB / T5224, ASTMA416, BS5896, JISG3536, ISO6934 & EN10138
Specification ntawmPrestressed Qhob Strand
(ASTM A416)
| Qib | Nominal Dia. (mm) | Ua siab ntev (mm) | Nominal ntu cheeb tsam （m㎡） | Mass per 1000m (kg / 1000m) | Yam tsawg kawg nkaus tawg thauj khoom | Min Load ntawm 1% Txuas ntxiv (KN) | L0 Ntau dua lossis sib npaug li 610mm (%) | Kev so ntawm 1000 h (Pib pib rau 70% ntawm nominal max load) (r/%) | |
250 [1725] | 9.5 | ±0.40 | 51.6 | 405 | 89 | 80.1 | 3.5 | 2.5 | 3.5 |
| 11.1 | 69.7 | 548 | 120.1 | 108.1 | |||||
| 12.7 | 92.9 | 730 | 160.1 | 144.1 | |||||
| 15.2 | 139.4 | 1094 | 240.2 | 216.2 | |||||
270 [1860] | 9.53 | +0.65 -0.15 | 54.84 | 432 | 102.3 | 92.1 | |||
| 11.11 | 74.19 | 582 | 137.9 | 124.1 | |||||
| 12.7 | 98.71 | 775 | 193.7 | 165.1 | |||||
| 15.24 | 140 | 1102 | 260.7 | 234.6 | |||||
| Qauv | Nominal Dia. (mm) | Ua siab ntev (mm) | Coss ntu cheeb tsam (Sn/m㎡) | Re. loj per 1000m (kg / 1000m) | Fm 0.2/KN Tensile zog tsis tsawg tshaj (MPa) | Fp0.2/KN Yield zog tsis tsawg tshaj (MPa) | (L0 Ntau dua lossis sib npaug li 500mm) Agt Elongation ntawm max load Tsis tsawg dua （%） | Pib load rau % npe inal max tshaj (%) | Kev so ntawm 1000h (r%) |
| 1X2 | 8 | +0.25 -0.10 | 25.1 | 197 | 1470 1570 1720 1860 1960 | 1320 1410 1550 1670 1760 | 3.5 | 60 70 80 | 1.0 2.5 4.5 |
| 10 | 39.3 | 309 | |||||||
| 12 | 56.5 | 444 | |||||||
| 1x3 | 8.6 | +0.20 -0.10 | 37.3 | 296 | |||||
| 10.8 | 58.9 | 462 | |||||||
| 12.9 | 84.8 | 666 | |||||||
| 1X7 | 9.5 | +0.30 -0.15 | 54.8 | 430 | 1720 1860 1960 | 1550 1670 1760 | |||
| 11.1 | 74.2 | 582 | |||||||
| 12.7 | +0.40 -0.20 | 98.7 | 775 | ||||||
| 15.2 | 140 | 1100 | 1470 1570 1670 1720 1860 1960 | 1320 1410 1500 1550 1670 1760 | |||||
| 15.7 | 150 | 1178 | 1720 1860 | 1550 1670 | |||||
| 17.8 | 191 | 1500 | |||||||
| 21.6 | 285 | 2237 | 1770 | 1590 | |||||
| 1860 | 1670 |
Raw Khoom
Peb cov khoom siv raw yog siab carbon hlau qws SWRH82B thiab SWRH77B. Peb tsuas yog yuav qhov zoo tshaj plaws xaim pas nrig los ntawm cov npe nrov steel hauv Suav teb.
Txheej txheem ntau lawm
Cov ntaub ntawv raw (xws li tshuaj xyuas) → Kev kho deg → Thawj kos duab → Hlau strand (9 zaug ntawm kev kos duab) → Kev kho kom ruaj khov → Anti-xeb coiling → Ntim
Kev tshuaj xyuas:
Ob qhov kawg ntawm ib lub pc strand kauj yuav tsum raug tshuaj xyuas los ntawm kev ntsuam xyuas kev ntxhov siab, kev ntsuas nruj, kev ntsuas hydraulic universal,
bending test thiab boroscope test, thiab lwm yam.
PC stands Hoobkas
Daim ntawv thov Prestressed Concrete:
PC STRAND feem ntau yog siv los ua cov cuab yeej txhawb nqa rau kev ua vaj tse. Piv txwv li, ntev spanned txuas hniav nyob rau hauv railway thiab txoj kev loj, overhead crane siv, multi-pem teb muaj tsev, thiab lwm yam.
Cim npe nrov: pc strand prestressed qhob steel strand manufacturers, lwm tus neeg, Hoobkas
