Khoom npe
Kev txhawb nqa cov hlau rau cov neeg txua roj kev (pej xeem siv rebar / cov qauv kev sib txuas lus)
1. Cov ntsiab lus
Kev txhawb nqa cov hlau rau kev tsim khoom lag luamyog qhov siab - Cov khoom siv qauv qauv qauv tsim los muabtensile lub zog, ductility, thiab ruaj khovTxhawm rau txhawb kev ua vaj tse (RC) hauvKev tsim kho vaj tse, cov haujlwm ua haujlwm rau pej xeem, thiab kev tsim kho hnyav.
Nws yog siv ntau yam hauvTxuas hniav, kev sib txawv, cov pas dej tauv, kev loj, cov chaw muaj tshav dav hlau, cov chaw kho dej, tswj cov phab ntsa, thiab cov hauv paus lojCov. Pawg no ntawm kev txhawb nqa steel yog engineered kom tau raws linruj zog, qaug zog tsis kam, thiab corrosion tiv thaivntawm loj - teev cov haujlwm cej xeem kev ua haujlwm, kom muaj kev pabcuam ruaj khov thiab ntev kev pabcuam nyob hauv qab thiab kev ntxhov siab ib puag ncig.
2. Cov qauv thiab cov qhab nia sib npaug
| Lub hom phiaj | Xws li qib | Yield zog (mpa) | Kev piav txog |
|---|---|---|---|
| Tuam Tshoj (GB / T 1499.2) | HRB500E / hrbf500e / hrb600 | 500–600 | Kev Ductility High "E -} Cov Hlau 'steel rau seismic thiab infrastructure tej yaam num |
| Tebchaws Asmeskas (ASTM A706 / A615) | Qib 60 / Qib 75 / Qib 80 | 420–550 | High - lub zog, weldable rebar rau pej xeem cov qauv |
| Teb chaws Europe (EN 10080) | B500B / B500C | 500 | Txheem rebar rau kev txhawb nqa kev ua vaj tse |
| Is Nrias teb (yog 1786) | Fe500D / FE550D / FE600 | 500–600 | D - qib rau kev ua siab loj thiab qaug zog tsis kam |
| Nyiv (JIS G3112) | SD490 / sd590 | 490–590 | Siv rau choj, tunnels, thiab cov phiaj xwm loj |
Nplua Cej luam Egyering -} qib ntxiv yuav tsum ua raws liTxhim Kho Ductility, kev muaj zog, thiabQoob Luv Cov QauvTshaj li ntawm cov neeg txawv teb chaws rebar.
3. Cov Khoom Siv Thiab Cov Neeg Kho Mob
| Ntiag tug | Cov Khoom Nquag Yog | Kev piav txog |
|---|---|---|
| Khoom Hom | Kub -} rolled deformed lossis thermomechanically kho (TMT) hlau | Microalloy lossis Qis -} carbon variants rau kev ductility siab |
| Yield zog (FY) | 500-650 MPa | Muab cov load siab - Cov kabmob muaj peev xwm |
| Qhov kawg tensile lub zog (FU) | 600-800 MPA | Superior tiv taus nyob rau hauv cov nra hnyav |
| Elongation (Δ5) | Ntau dua los yog sib npaug rau 12-16% | Paub tseeb yooj thiab kev ua yeeb yam |
| Elastic Modulus (e) | ≈ 200 GPA | Siab siab thiab sab ruaj khov |
| Qeeb zog tsis kam | Zoo tshaj | Rau choj, tunnels, thiab paves |
| Weldability (CE) | Tsawg dua los yog sib npaug rau 0.45 | Tsim nyog rau loj welded requinflies |
| Corrosion Kuj | Siab (nrog cov txheej txheem) | Ua kom muaj kev muaj peev xwm ntawm cov av noo lossis dej hiav txwv |
4. Kev Tsim Kho Cov Txheej Txheem
Kev Rebar Civil Estallation yog tsim cov qauv me me ntawm kev tswj hwm tau siv ib lossis ntau txoj hauv kev hauv qab no:
Kub Rolling nrog tswj kev txias:Refines cov qauv lis thiab txhim kho cov tshuab muaj zog.
Kev kho thermomechanical (TMT):Ua rau cov tub ntxhais tawv tawv nrog cov tawv tawv, tempered nto.
Microalloying (V, NB, ti):Txhim kho kom muaj zog zog tsis muaj kev zom txha.
Cov txheej saum npoo:Kub -}} dip galvanizing, epoxy, lossis zinc - aluminium alloy (galfan) txheej tiv thaiv tawm tsam corrosion.
5. Qhov ntev thiab khoom lag luam ntau
| Inch (hli) | Nyhav (kg / m) | Raug |
|---|---|---|
| 8 | 0.395 | Lub teeb qhov cuab lub zog rau phab ntsa thiab slabs |
| 10 | 0.617 | Paves, cov hauv paus, thiab kab teeb |
| 12 | 0.888 | Choj lub lawj, khaws phab ntsa |
| 16 | 1.578 | Piers, loj slabs, thiab kab |
| 20 | 2.466 | Kev siv, kev tshem tawm, txhawb kev hnyav |
| 25 | 3.854 | Dams, txheej txheem thav ntawv |
| 32 | 6.313 | Sib sib zog nqus lub foundations, choj piers |
| 40 | 9.865 | Cov tswv cuab loj hlob loj |
Ntev:6 m, 9 m, 12 m, lossis customized txiav - {4} ntev.
Cov Ntawv:Ncaj ncaj lossis coils (tsawg dua los yog sib npaug rau 12 hli inch).
Nto:Deformed (Ribbed) rau cov pob zeb ua kom muaj zog.
6. Cov yam ntxwv tseem ceeb thiab cov txiaj ntsig
✅ Lub zog siab & kev nruj:Txhawb cov khoom loj zoo li qub thiab kev thauj khoom zoo hauv cov txheej txheem hnyav.
✅ Foob Zoo Tshaj:Ua raws li kev ntxhov siab dua los ntawm kev tsheb khiav, cua, lossis cov seismic kev ua si.
✅ Txhim Kho Ductility:Qhov tseem ceeb rau lub zog nqus dej hauv av qeeg hauv av qeeg hauv av qeeg - heev cheeb tsam.
✅ Superior bonding:Deformed saum yeej ua kom zoo meej adhesion rau pob zeb ua vaj tse.
✅ Corrosion tiv thaiv xaiv:Epoxy - coated los yog galvanized rau ncua kev pab cuam lub neej.
✅ Weldable & Fabricable - Tus phooj ywg:Haum rau cov khoom lag luam muaj txiaj ntsig loj ntxiv.
✅ Lub neej ntev kev pab lub neej:Tsim los rau 50-100-xyoo Infrasure Durability.
7. Kev thov
Txuas hniav thiab cov neeg hla dej:Cov hlais pob zeb, girders, piers, abutments.
Ntau thiab nyob hauv av txheej txheem:Linings, khaws phab ntsa, thiab cov hauv paus.
Lub pas dej tauv thiab cov txheej txheem hydraulic:Tej yam khoom txos, tswj cov rooj vag, thiab dej -} ceev tuav phab ntsa.
Kev loj thiab kev tsheb nqaj hlau:Kev ua haujlwm slabs, Culverts, tuav cov qauv.
Tshav dav hlau:Kev khiav, tsheb tavxisways, thiab lub hauv paus hniav qeeb.
Chaw nres nkoj thiab cov phiaj xwm marine:Wharf decks, dolphin, thiab quay phab ntsa.
Cov Utilce Tsheb:Dej cov zaub mov, tso tsheb hlau luam, thiab dej faib.
8. Txheej thiab Kev Xaiv Tiv Thaiv
| TXHEEJ YAM | Kev piav txog | Pom zoo siv |
|---|---|---|
| Kub - dip Galvanized (Z180-Z275) | Zinc Txheej rau Ntev - Term Corrosion Kev Tiv Thaiv | Tubrog Tubrog lossis Nqaum Txheej Txheem |
| Epoxy coated (Astm A775) | Fusion - bonded txheej los tiv thaiv chloride corrosion | Txuas hniav, cov tunnels, txoj kev loj |
| Zinc -}} Aluminium (Galfan) | Txhim Kho Adhesion Thiab Dust Kuj | Kev txhoj puab heev ib puag ncig |
| Stainless lossis duplex rebar | Qhov Kawg Corrosion Kuj | Cov Huab Cua, Cov Chaw Dej, Ntev - Lub Neej Txoj Haujlwm |
9. Fabrication thiab tuav
Tej & dabtsi yog khoov:Ua raws li cov hluav taws xob cov qauv (ntau dua los yog sib npaug rau 6 × bar txoj kab uas); Kev khoov txias txias nyiam.
Vuam:Siv cov qib weldable (piv txwv li, hrb500e, Astm A706). Xam meej preheat thiab muab ua kom sib haum.
Cia:Cia li reb ob lub av, qhuav, thiab npog.
Kev tso kawm:Tswj cov qauv tsim thiab cov pob zeb ua vaj tse (ntau dua lossis sib npaug li 50 hli rau cov ntawv thov sab nrauv).
Los ua ke:Pre {-}} Khi} Khis los yog Welded tawb rau loj {1} Ncaws pob ua haujlwm tuaj yeem txo qhov chaw ua haujlwm.
10. Kuaj thiab Kev Ntsuas Zoo
Txhua tus engineering kev ua kom lub zog ua haujlwm yuav tsum tau ua kom nruj thiab muaj ntawv pov thawj:
Kev Kuaj Neeg Kho:Tensile, Yield, khoov, thiab rov ntsuas dua.
Qaug zog kuaj:Ua kom muaj kev ruaj khov nyob rau hauv cyclic thauj khoom (choj thiab kev siv hlau ua ke).
Kev Cuam Tshuam:Qhia txog kev ua kom tawv tawv rau qis - kub kev ua tau zoo.
Tshuaj Ntsuam Xyuas Tshuaj:Tshaj tawm cov pa roj carbon sib npaug (CE) thiab alloy muaj pes tsawg leeg.
Txheej Kev Xeem:DFT, adhesion, thiab ntsev {- tsuag tsuag rau cov pawg coated.
Cov ntawv pov thawj zeb xeem (MTC):Muab nrog tag nrho traceazebility (naj npawb kub, batch ID).
Thib peb -} kev tshuaj xyuas:TÜV / SGS / BV muaj ntawv pov thawj rau cov ntawv cog lus infrastructure.
11. Sib Piv
| Ntiag tug | Lub tsev rebar | Cov Neeg Sawv Cev Nplua |
|---|---|---|
| Yield zog (mpa) | 335–400 | 500–650 |
| Qeeb zog tsis kam | Tswj kav | Siab |
| Kev ua siab loj | Lub hom phiaj | Txhim Kho (E / D Qib) |
| Corrosion Kuj | Yam ua tau | Qhov tseem ceeb rau kev ntev - lub neej tsim |
| Cov Txheej Txheej Txheej | Tsis muaj / lub teeb zinc | Epoxy / Galfan / Stainless |
| Tsim Lub Neej | 25-50 xyoos | 50-100 xyoo |
| Cov Ntawv Thov | Tsev | Txuas hniav, cov tunnels, pas dej tauv, txoj kev, khoom siv |
12. Ntim thiab xa khoom
Cov ntawv ceeb thawj:1-3 tons ib pob.
Khij:Txhua pob ntawv sau npe nrog qib, txoj kab uas hla, qauv, tus lej cua sov, thiab hnub cua sov.
Cov khoom siv hluav taws xob:Seaworthy bundles qhwv hauv noo noo {{}} ntaub ntawv pov thawj.
Kev Xa Khoom:Cov kab ncaj ncaj lossis cov kauj, npaj rau ntawm -}} chaw ntawm fabrication.
13. Tsim thiab Code Ua Si
Civil engineering rebar yog tsim thiab muab raws li cov neeg thoob teb chaws thiab thoob ntiaj teb:
GB / T 1499.2-2018 (Suav Teb):Kub - ribbed cov ceg rau qhov cuab lub zog.
ASTM A706 / A615 (USA):Weldable thiab siab - lub zog rebar qauv.
EN 10080 / Eurocode 2 (EU):Kev txhawb nqa tsim thiab cov ntaub ntawv ua tiav.
Aashto lrfd (USA):Choj thiab Cival Cov Qauv Qauv Tsim Qauv.
Yog 1786 (Is Nrias teb):High - DзTillerity Qhov cuab lub zog rau cov txheej txheem.
JIS G3112 (Nyiv):Cov qauv rebar rau pej xeem thiab kev ua haujlwm.
14. Ntsiab lus
Kev txhawb nqa cov hlau rau kev tsim khoom lag luamyog tus qaum qaum ntawm niaj hnub infrastrastrasure -} entryered rausiab lub zog, ductility, nkees tsis kam, thiab kev tiv thaiv corrosionCov. Nws muab qhov ntev - sij hawm reliability tseem ceeb rauchoj, tunnels, pas dej tauv, thiab ua haujlwm rau pej xeemuas yuav tsum tau ua kom muaj kev nyab xeeb rau kaum tawm hauv cov xwm txheej hnyav.
Los ntawm kev sib txuaskev ua tau metallurgy, nruj tswj hwm, thiabLub Zog Hluav Taws Xob, Civil {- qib kev txhawb nqa hlau kom paubthiav, kev nyab xeeb, thiab tus nqintawm cov neeg tseem ceeb hauv tebchaws.
Koj puas xav kom kuv tsim aCivil engineering Credit Xyuas Daim Ntawv Tshwj Xeeb(Muaj qib kawm, cov cuab yeej ua neeg siv cov tshuab, cov qauv siv, thiab cov ntaub ntawv, thiab cov damns) npaj rau cov khoom lag luam khoom lossis cov ntaub ntawv?
Cim npe nrov: Kev txhawb nqa cov hlau rau cov neeg txua txiag uas tsim khoom, Tuam Tshoj uas txhawb nqa hlau rau cov neeg tsim khoom lag luam, chaw muag khoom, Hoobkas
