Lub steel cantilever girder yog kab rov tav lossis truss txhawb nqa thiab kho ntawm ib kawg nkaus xwb, nrog rau lwm qhov kawg overhanging dawb do - ib daim ntawv uas nqa lub lawj thiab tsheb thauj mus rau ib qho kev txhawb nqa ruaj khov thaum projecting deb dhau ntawm nws, ua kom ntev ntev tsis muaj piers nruab nrab.
Fabricated nyob rau hauv siab - qib zog xws li Q355B/C/D/E, Q420, ASTM A572 Gr.50 thiab S355JR, peb cantilever girders raug xa raws li H- nqaj, kaw lub thawv lossis qhov sib txawv (tapered) ntu, welded los ntawm submersed .D1 / AWS D1. Qib I/II, thiab txhaj tshuaj- blasted rau Sa2.5 nrog ib tug peb -coat system los yog kub{12}}dip galvanized rau sab nraum zoov thiab marine durability.
Steel Cantilever Girder Specification
| Yam khoom Parameter | Specifications / Nqe lus piav qhia |
| Qib Steel | Q355B / C / D / E, Q420, ASTM A572 Gr.50, S355JR |
| Txuj | GB/T 1591, EN 10025, ASTM, AWS D1.1/D1.5 |
| Tshooj Profile | H-Beam, Box Girder, Variable Cross-section |
| Qhov ntev | Customized raws li tus qauv kos duab |
| Vuam txheej txheem | SAW (Submerged Arc Vuam), CO2 Gas Shielded Vuam |
| Vuam Zoo | Qib I / Qib II (UT / RT Testing) |
| Kev kho saum npoo | Phom Blasting Sa2.5 + Painting / Kub-dip Galvanizing |
| Hom kev sib txuas | Siab -S zog Bolt Txuas lossis Ntawm -Vuam qhov chaw |
Engineering Performance Notes
Cantilever dabtsi yog khoov- max tsis zoo (hogging) lub sijhawm thiab shear ntawm qhov kev txhawb nqa ruaj khov, max deflection ntawm qhov kawg dawb.
Ntev -span muaj peev xwm- siab-lub zog / lub teeb yuag steel + sib npaug- kev tsim kho cantilever nce mus txog 1500 ft + yam tsis muaj nruab nrab - ncua scaffolding.
Torsional tsim- kaw lub thawv muab ntau dua torsional rigidity/bending kuj dua li qhib seem nyob rau hauv eccentric loads.
Sib npaug-cantilever ib ntus- pier- ntu ntu tau kho, tom qab ntawd ntu tsim tawm ob sab ntawm txhua lub pier los ntawm cov cuab yeej tshwj xeeb erection, tus kheej - ruaj khov thaum nws loj hlob.
Kev sib txuas & kev xa khoom- 12–30 m Hoobkas ntu koom nrog bolted splices los yog ntawm - qhov chaw girth vuam nrog UT/RT tswj.
Cov qauv tsim siv tau- GB 50017 / JTG D64 · EN 1993-2 · AASHTO + AWS D1.5.
Qhov zoo ntawm Steel Cantilever Girder
1.Excellent Span Capacity
Ua ke nrog txoj kev tsim kho cantilever nrog lub zog siab thiab lub teeb yuag ntawm cov qauv hlau, cov txuas hniav no tuaj yeem ua tiav ntev heev. Keeb kwm, qhov siab tshaj plaws ncua tau tshaj 1500 ko taw.
2.Fast Fabrication & Kev tsim kho
Steel girders feem ntau yog prefabricated tawm ntawm -site, uas ua rau luv luv ntawm -site installation lub sij hawm thiab xyuas kom meej kev tsim kho zoo.
3.High Load Capacity & Flexibility
Cov hlau muaj qhov muaj zog ductility thiab siab tensile lub zog. Nws tuaj yeem tiv taus cov khoom hnyav hnyav thiab zoo dua tiv thaiv hauv av, thermal expansion thiab contraction piv nrog cov ntaub ntawv nruj.
4.Long-Cov txiaj ntsig nyiaj txiag ntev
Txawm hais tias tus nqi pib ntawm cov khoom siv ntau dua, cov qauv steel xav tau kev saib xyuas tsawg, xa cov suab ntev ntev - cov nyiaj rov qab los. Tsis tas li ntawd, lawv yog 100% recyclable thaum kawg ntawm kev pab cuam lub neej.
Cov khoom ua ntawm Steel Cantilever Girder
Kev tsim cov hlau cantilever girders rau txuas hniav ua raws cov txheej txheem nruj:
Lub khw nthuav dav & kev npaj txiav- girder qauv; chord/phaj layout, web coping, stiffener thiab splice txoj hauj lwm tsau; siab- lub zog daim hlau sawed thiab CNC nplaim taws- txiav.
CNC machining & kawg - ntsej muag npaj- txoj haujlwm qhov, qhov kawg ntawm lub ntsej muag thiab cov kabmob sib tiv tauj qhov chaw machined rau kev sib dhos qhov tseeb.
Sub{0}} sib dhos- webs, flange phaj thiab diaphragms haum rau ntawm lub tshuab tsis siv neeg sib dhos.
Cov qauv vuam- lub ntsiab seams los ntawm SAW + CO₂ roj-shielded vuam nyob rau hauv WPS/PQR; distortion tswj thiab kho.
NDT Inspection- UT/RT xeem rau Qib I/II ntawm qhov tseem ceeb thiab tag nrho - nkag mus rau welds.
Tua blasting Sa2.5 & txheej- tawg rau Sa2.5; peb -coat system lossis HDG nrog DFT tswj.
Kev tshuaj ntsuam zaum kawg & ua ntej -erection- qhov ntev thiab ntsia liaj qhov rooj- qhov haum kuaj xyuas; cov tswv cuab tseem ceeb ua ntej- sib dhos.
Marking, tiv thaiv & ntim- cim, ntug- tiv thaiv thiab xa tawm- ntim.
Daim ntawv thov ntawm Steel Cantilever Girder
Ntev- hla dej & hav hla- thawj qhov ntev ntawm txoj kab dav dav - txoj kev hla dej hla tus dej thiab cov kwj deg yam tsis muaj piers nruab nrab.
Overpasses & nkhaus ramps- siab-torsional box girders ntawm kev sib hloov ramps tiv thaiv kev sib tw los ntawm eccentric loads.
Toj roob hauv pes & cov neeg taug kev choj- ib zaug - xaus cantilever spans hauv cov chaw ua si thiab cov haujlwm ua si.
Txoj kev dej/ntaus - kev hla kev- bracket- txhawb nqa cantilever saum txoj kab xa khoom tsis cuam tshuam txoj kev dej.
Ntim & Kev thauj mus los
| Yam khoom | Paub meej |
|---|---|
| Ntim | Anti-xeb zaj duab xis qhwv; cov npoo thiab txheej txheej padded. |
| Segmenting | 12-30 m ntu; ntev khiav girth-welded los yog bolted ntawm qhov chaw. |
| Kho vajtse | Siab -lub zog bolts, gussets, splice daim hlau nyob rau hauv cov cim hlau. |
| Kev thauj mus los | Spreader lifting los tiv thaiv kev khoov; pluaj + dunnage; hiav txwv- tsim nyog ntim; FOB / CFR / CIF. |
| Docs xa tuaj | Daim ntawv teev npe, daim ntawv them nqi, MTC, vuam / NDT (UT / RT), cov ntaub ntawv txheej, khw / sib dhos kos duab. |
FAQ:
Thaum twg kuv yuav tsum xaiv lub cantilever girder tshaj ib qho kev txhawb nqa yooj yim lossis txuas ntxiv?
Xaiv ib qho kev npaj cantilever thaum hla tus dej dav, qhov tob tob lossis cov dej tsis khoom uas cov piers nruab nrab yog qhov ua tsis tau zoo thiab kev taug kev tshem tawm yuav tsum tau - ib qho - kawg - tsau overhang mus txog qhov ntev heev yam tsis muaj nruab nrab -span piers. Siv yooj yim txhawb rau luv luv; nruam girders qhov twg qis dua lub sijhawm khoov thiab kev txuag nyiaj thoob plaws qhov tseem ceeb.
Daim ntawv hla tebchaws twg kuv yuav tsum siv - lub thawv, H-beam lossis hloov pauv?
Ib lub thawv kaw yog qhov zoo tshaj plaws rau nkhaus ramps / overpasses xav tau siab torsional rigidity; H-beam suits ncaj sib dua spans; Qhov sib txawv (tapered) ntu ua raws li khoov- lub hnab ntawv lub sijhawm kom txuag tau cov hlau ntev ntev. Peb loj rau koj ncua, curvature thiab load.
Yuav ua li cas ntev cantilever girder xa thiab spliced ntawm qhov chaw?
Fabricated tawm -site nyob rau hauv 12–30 m ntu, ces girth-welded mus rau hauv tas li lengths los yog koom los ntawm siab -lub zog bolted splices; spans ntev heev siv cov cantilever sib npaug, tsim tawm ntawm txhua lub pier yam tsis muaj qhov nruab nrab -span scaffolding.
Dab tsi span muaj peev xwm thiab torsional nruj kuv tuaj yeem xav tau?
Kev tsim kho cantilever nrog siab - lub zog, lub teeb steel muab spans keeb kwm dhau 1500 ft; ib lub thawv kaw ntxiv ntau dua torsional rigidity / dabtsi yog khoov tsis kam tshaj qhov qhib seem.
