Tshaj li lub thawv steel girders, GNEE muaj kev tsim muaj peev xwm rau ntau yam ntawm cov khoom siv hlau hnyav siv hauv choj engineering. Peb cov kev txawj ntse encompassesloj - nplai steel kem, steel yeeb nkab pilingrau choj foundations,steel truss systems, thiabneeg taug kev crossbeams.
Yog tias koj xav tau kev pabcuam tshwj xeeb choj steelwork fabrication, thov hu rau GNEE hnub no!
Steel Box Girders Specification
| Hom Girder | Ib lub Box Girder / Multi-Box Girder |
| Span | 30m - 200m, lossis customized |
| Txoj Kev Dav | 8m - 42m, lossis customized |
| Qib khoom | Q345qC / D / E, Q370qE, Q420qE, ASTM A709 Gr.50 / Gr.50W, EN 10025 S355J2 / S355NL, JIS SM490 |
| Load Capacity | Tsim los ua raws li AASHTO HL-93 load txheem |
| Kev kho saum npoo | Phom Blasting Sa 2.5, Zinc-nplua nuj primer, epoxy intermediate coat & polyurethane topcoat |
| Kev sib txuas System | Bolt & txiv ntseej fastener sib dhos |
Tsis tas li ntawd, GNEE muab qhov kawg - mus rau - qhov kawg fabrication cov kev pab cuam, ncua los ntawm precision phaj profileing kom tiav girder los ua ke, thaum muab ib tug tag nrho portfolio ntawm steel box girder kev daws teeb meem. Peb cov khoom lag luam muaj xws li ib qho -cell, ntxaib-cell, thiab ntau- cell configurations, nrog rau segmental, kab rov tav nkhaus, thiab sib txawv - qhov tob (tapered) lub thawv girders. Peb tshwj xeeb hauv kev sib koom ua ke ntawm kev sib koom ua ke ntawm ntau -box systems nrog orthotropic steel decks (OSD). Peb kuj muab tag nrho customization raws li tus neeg siv khoom-muab kos duab thiab specifications. Koj cov lus nug yeej ib txwm txais tos.
Tib -cell box girder choj
Twin ib -cell box girder choj
Triple ib -cell box girder choj
Multi-cell box girder choj
Trapezoidal box girder choj
Twin multi-cell box girder choj
Cov txiaj ntsig tseem ceeb ntawm Steel Box Girders
Cov txiaj ntsig tseem ceeb ntawm Steel Box Girders
1.Shallow structural tob:Qhov qis- ntu profile yog qhov zoo tshaj plaws rau cov chaw uas muaj kev txwv tsis pub ntsug ntsug, kom txo tau qhov ntev ntawm txoj kev mus kom ze.
2. Txo qhov hnyav tuag:Qhov sib dua ntawm tus kheej- hnyav ntawm steelwork txo qis seismic loads ntawm lub substructure, ua kom tus choj tag nrho seismic resilience.
3. Kev tsim kho kom nrawm:Leveraging khw-prefabrication thiab segmental xa khoom, cov khoom tuaj yeem sib sau ua ke sai sai ntawm -site, ua kom cov txheej txheem kev teeb tsa yooj yim dua thiab lub sijhawm ua haujlwm luv dua.
Qhov Zoo Tshaj Plaws Tshaj Lij Choj Steel Choj Tsim
1.Superior flexural thiab torsional rigidity:Qhov siab tawv -rau- qhov hnyav piv ua rau cov girders no zoo tagnrho rau cov kab rov tav nkhaus thiab ncaj spans raug rau qhov tseem ceeb eccentric loading.
2.Enclosed hollow seem:Covhermetically kaw(los yog tag nrho nyob rau hauv) sab hauv tiv thaiv cov ingress ntawm ya raws thiab corrosive agents, ho txhim khu corrosion kuj thiab ncua lub neej kev pab cuam ntawm txheej txheej.
3.Accelerated Erection Efficiency:Tus qauv tsim ua kom yooj yim rau kev tsim kho sai los ntawm qhov loj -segment ib feem hoisting lossis incremental launching method (ILM), ua kom lub sijhawm luv luv.
4.Clean thiab streamlined aesthetic:Nrog rau tag nrho cov sab hauv diaphragms zais nyob rau hauv lub thawv qauv, lub girder tuav ib tug sleek, unobstructed sab nrauv profile.
Hlau Phaj Girder Choj
Steel Truss Girder Choj
Steel Box Girder Choj
Cov txheej txheem ntau lawm ntawm Steel Box Girders
Kev tsim ntawm peb lub thawv steel girders ua raws li kev ua haujlwm sib koom ua ke uas hloov los ntawm sub- cov khoom siv mus rau ib qho kev ua tiav spatial.
Cov txheej txheem pib nrog lub automated prefabrication ntawm orthotropic steel lawj (OSD) units, featuring precision longitudinal U- tav welding. Qhov no yog ua raws li los ntawm kev sib sau ua ke ntawm cov txheej txheem sab hauv, siv transverse diaphragms ua cov core stabilizing nodes. Thaum kawg, lub thawv qauv tau ua tiav los ntawm kev sib koom ua ke kaw welding thiab cov khw muag khoom sib tw nruj. Txoj hauv kev zoo no ua kom ntseeg tau tias txhua ntu girder muab qhov zoo tshaj qhov torsional rigidity thaum ua raws li qhov nruj geometric interface tolerances tseem ceeb rau ntev -span choj engineering.
Fabrication txheej txheem ntawm peb lub thawv Steel Girders
1. Automated Vaj Huam Sib Luag Stiffening
Automated vuam ntawm U-ribs rau lawj daim hlau.
2. Diaphragm Pre-fabrication
CNC txiav thiab ntxiv dag zog ntawm diaphragms.
3. Internal Skeleton Alignment
Teeb tsa lub hauv paus txheej txheem.
4. Segmental Sub-sembly
Haum thiab sub- ua ke ntawm cov ntu tshwj xeeb.
5. Tag Nrho Lub Thawv Ntim
Kev sib xyaw zaum kawg thiab vuam ntawm lub thawv ntu.
6. Kev Sib Tham & Kev Tshuaj Xyuas
Lub khw muag khoom sib dhos thiab kev kuaj xyuas qhov tseeb kawg.
Daim ntawv thov tseem ceeb ntawm Steel Box Girders
Steel Box Girders tau dav siv hauv choj thiab hauv nroog infrastructure vim lawv lub zog siab - rau - qhov hnyav piv, zoo dua torsional rigidity, zoo heev structural kev ncaj ncees, thiab ceev kev tsim kho. Thawj daim ntawv thov scenarios thiab lawv cov yam ntxwv ntawm cov qauv tau piav qhia hauv qab no:
1. Lub Nroog Viaducts thiab Kev Sib Hloov Ramps
Daim ntawv thov Scenarios: Hauv nroog elevated expressways, txoj kev loj interchange ramps, thiab me me - mus rau - nruab nrab span choj hla kev pab cuam txoj kev los yog railways.
2. Ntev -Span Bridges (Kev loj & Railway)
Daim ntawv thov scenarios: Ntev- ncua txuas txuas txuas txuas; dej, maritime, thiab canyon hla; thiab siab - load highway thiab railway infrastructure.
3. Striffening Girders rau Cable-Tsev, Ncua tseg, thiab Arch Choj
Daim ntawv thov Scenarios: Stiffening girders (lub ntsiab longitudinal girders) los yog structural Cheebtsam rau choj pylons nyob rau hauv ntev -span cable- nyob, ncua kev kawm ntawv, thiab koov choj systems.
4. Cov neeg taug kev thiab cov choj zoo nkauj
Daim Ntawv Thov Scenario: Nroog footbridges thiab architectural toj roob hauv pes choj.
Steel Box Girder vs I-Girder vs Concrete Girder
Cov kev taw qhia txog kev ua tau zoo los ntawm cov ntaub ntawv engineering; qhov tseem ceeb yog siv, tsis yog hloov rau kev tsim.
| Yam | Steel box girder | Steel kuv-girder | Qhob box girder |
|---|---|---|---|
| Torsional / lateral stability | Kaw seem, siab torsional txhav heev, resists lateral -torsional thiab distortional buckling | Qhib seem, qis torsional nruj, xav tau ntau dua bracing thiab txhawb cov ntsiab lus | Kaw seem, zoo; tab sis formwork- hnyav ntawm qhov chaw |
| Tus kheej hnyav | Nqa tib lub load li pob zeb thaum hnyav ~ 50-60% tsawg dua; OSD lawj ~ 20-30% ntawm pob zeb pob zeb | Teeb | Hnyav - tuaj yeem yog 2–3 × lub thawv steel hnyav rau tib lub sijhawm |
| Curved / kab rov tav alignment | Zoo heev, tsawg kawg kev txhawb nqa nruab nrab yuav tsum tau | Nruab nrab; ntau bracing | Muaj peev xwm tab sis tsim hnyav dua |
| Maintenance / durability | Tsawg dua qhov chaw, cov npoo tsawg dua, tsis muaj qhov sib tsoo - huv dua, kev saib xyuas qis dua | Tshaj tawm ntug thiab bracing | Tsawg hlau los pleev xim, tab sis kev kho vaj tse yuav tsum tau ua |
| Erection ceev | Factory modules + ceev ceev ntawm - chaw sib dhos lossis ILM launching | Ceev ceev, ntu nqa ib tus zuj zus | qeeb; cam khwb cia-hauv- qhov chaw kho / hnyav precast lifting |
| Zoo tshaj plaws | Ntev spans, nkhaus ramps, marine, 300 m + feasibility tsom | Cov pa nruab nrab -span txuas hniav | Short-medium spans nrog pheej yig hauv zos pob zeb |
Peb Customization Services ntawm Steel Box Girders
Ntawm GNEE, peb tsis yog tsim cov khoom siv hlau xwb; peb muab cov kev txhawb nqa tseem ceeb rau kev thauj mus los yooj yim los ntawm kev tsim engineering thiab kev tsim kho kom zoo. Peb muab cov kev pabcuam "kawg-rau-end" kev pabcuam rau cov khoom lag luam steel girder.
Dab tsi tuaj yeem kho tau?
Peb muab kev sib sib zog nqus customization nyob rau hauv cov nram qab no qhov ntev kom tau raws li qhov sib txawv choj spans, load yuav tsum, thiab ib puag ncig tej yam kev mob:
Geometric Dimensions & Section Shapes
Peb tuaj yeem tsim cov duab plaub, trapezoidal, lossis streamlined cross-sections raws li cov qauv tsim.
Kev xaiv cov khoom siv qib
Peb muaj nyob rau hauv ntau qib zog xws li Q355, Q420, thiab cov qauv thoob ntiaj teb xws li ASTM A572, S355, thiab lwm yam.
Internal Structural Optimization
Peb tuaj yeem ua cov stiffeners (longitudinal & transverse), diaphragms, thiab manhole txoj haujlwm los txhim kho torsional txhav.
Corrosion Protection Systems
Peb tuaj yeem muab cov txheej txheem siab -txheej txheem txheej xws li kub-dip galvanizing, epoxy zinc- nplua nuj primers, thiab fluorocarbon xim rau marine lossis industrial cheeb tsam.
Peb Customization txheej txheem
Peb cov txheej txheem ua kom muaj tseeb los ntawm daim phiaj xwm mus rau ntawm - qhov chaw teeb tsa:
Technical Consultation & Drawing Review
Peb cov engineers txheeb xyuas koj cov duab kos duab (CAD / Tekla) los ntsuas qhov ua tau zoo ntawm kev siv tshuab.
01
Paub meej Tsim & BIM qauv
Siv BIM thev naus laus zis rau 3D qauv los daws txhua qhov teeb meem ntawm cov qauv ua ntej.
02
Precision Txiav & Fitting
CNC plasma / laser txiav kom ntseeg tau tias qhov kev sib raug zoo raug khaws cia hauv millimeters.
03
Professional Vuam & NDT
Siv Submerged Arc Vuam (SAW); 100% dhau NDT (UT & RT) kev xeem.
04
Ua ntej- sib dhos & xa khoom
Factory ua ntej- sib dhos ntawm cov ntu tseem ceeb kom paub tseeb tias xoom rov ua haujlwm ntawm -site.
05
Vim li cas thiaj xaiv Peb Cov Kev Cai Steel Box Girders?
Muab piv rau cov kab teeb ci ib txwm muaj, peb cov khoom siv steel hlau girders muaj qhov zoo ntawm engineering:
Perfect Adaptation rau Complex Geometry
Cov txuas hniav niaj hnub no feem ntau muaj cov qib siab, nruj nkhaus, lossis cov qauv skewed nyuaj. Peb customization xyuas kom meej fabrication ntawm steel box girders nrogspatial twists, tapered seem, los yog nce mus nce los qhov siab- qhov tseeb uas tawm ntawm - cov - cov khoom txee tsis tuaj yeem sib xws.
01
Optimized Material Efficiency & Qhov hnyav
Siv Finite Element Analysis (FEA), peb kho cov phaj tuab raws li qhov tseeb ntawm kev ntxhov siab sib faib - txhawb nqa siab - thaj chaw kev ntxhov siab thaum txo qhov hnyav hauv qis - thaj chaw kev ntxhov siab.Qhov no txo cov kev siv steel los ntawm 10-20%, txo cov nqi ntawm cov khoom siv thiab txo cov load ntawm cov piers thiab cov hauv paus.
02
Kev Tiv Thaiv Tus Kheej rau ib puag ncig tshwj xeeb
Cov huab cua sib txawv xav tau cov tswv yim sib txawv. Peb kho cov qib steel (xws li, weathering steel) thiab txheej txheej (xws li, hnyav-lub luag haujlwm tiv thaiv-corrosion rau marine ib puag ncig). Qhov noncua sijhawm txij nkawm thiab txo qhov ntev -cov nqi ua haujlwm.
03
Modular Design for Zero{{0}Yug Ntawm-site Assembly
Peb kho lub girder rau hauv qhov ua tau zoo modular ntu raws li koj qhov chaw crane muaj peev xwm thiab kev txwv tsis pub thauj. Txhua qhov sib koom ua ntej- sib dhos thiab laser- ntsuas hauv peb lub Hoobkas, ua kom muaj "zoo meej" ntawm - qhov chaw uasminimizes kev cuam tshuam tsheb thiab siv sijhawm.
04
Txhawb nqa Unique Architectural Aesthetics
Toj roob hauv pes txuas hniav thiab cov chaw hauv nroog yuav tsum muaj cov lus pom tshwj xeeb. Pebhloov engineering rau hauv artlos ntawm customizing lub curvature, xim, thiab kev sib txuas teeb pom kev zoo ntawm lub cev girder.
05
Peb Kev Tswj Xyuas Zoo
Los ntawm cov khoom siv raw khoom los ntawm kev sib txuas, vuam, thiab kev npaj saum npoo, GNEE siv cov txheej txheem nruj heev ntawm kev tshuaj xyuas thiab kev sim cov txheej txheem kom lav tau qhov zoo tshaj plaws thiab kev ncaj ncees ntawm lub thawv steel girders xav tau rau koj cov choj engineering project.
Welding Quality Control
1.NDT (Tsis yog-Kev kuaj kev puas tsuaj):100% los yog sampling UT rau tag nrho cov pob tw welds; RT yuav tsum tau ua kom muaj kev nruj nruj kom ntseeg tau tias kev ua raws li Chav Kawm I.
2.Traceability:Cov ntaub ntawv soj ntsuam yuav tsum qhia qhov chaw tsis raug. Qhov siab tshaj plaws ntawm ob qhov kev sim kho yog tso cai rau ib qhov chaw weld.
3.WPS Ua raws li:Tiag -lub sij hawm saib xyuas tam sim no, voltage, ceev, thiab preheat / interpass kub kom ntseeg tau nruj ua raws li tsim nyog WPS / PQR.
Txheej & Nto Tiv Thaiv
1. Kev Npaj Nto:Kev huv huv pov thawj rau Sa 2.5 (ISO 8501-1); thauj tog rau nkoj profile (roughness) tuav ntawm 50-80μm.
2.DFT (Dry Film Thickness):Ntsuas rau 10 m²; tag nrho cov thickness yuav tsum tau raws li tus tsim, nrog rau ib tug neeg txheej deviations nyob rau hauv ± 10%.
3. Adhesion:Txheeb xyuas los ntawm rub-kev xeem tawm (Ntau dua lossis sib npaug ntawm 5MPa) lossis hla- txiav kev xeem; xoom delamination tso cai.
4. Kev tshuaj xyuas qhov muag:Uniform tag dawb ntawm hnub so, pinholes, sags, los yog tev; xim-ua tau raws li cov qauv RAL pom zoo.
Packing & Delivery ntawm Steel Box Girders
1. Nto & Interface Protection
Xaus yog kaw nrog cov yeeb yaj kiab tsis muaj dej tsis zoo thiab cov desiccants los tiv thaiv sab hauv corrosion. Kev sib txhuam ntawm qhov chaw raug kho nrog cov tshuaj tiv thaiv- xeb xeb, thiab cov roj hmab tiv thaiv tiv thaiv cov npoo txheej, ua kom tsis muaj kev puas tsuaj rau lub sijhawm ntev - kev thauj mus los hauv hiav txwv.
2. Kev Txhim Kho Cov Txheej Txheem & Kev Tiv Thaiv - kev cuam tshuam
Ib ntus sab hauv tus ntoo khaub lig-bracing yog ntsia los txhim kho sab rigidity thaum caij tsheb thauj mus los thiab tuav. Qhov no tiv thaiv geometric distortion (pob zeb diamond) ntawm lub thawv ntu, kom ntseeg tau tias millimetric precision rau ntawm -site haum- nce.
3. Kev txhawb nqa yooj yim & tuav kev nyab xeeb
Customized steel eeb nrog tuab roj hmab padding muab kev txhawb nqa yooj yim kom tsis txhob muaj hlau -rau -hlau. COG tseem ceeb thiab nqa cov cim taw qhia, nrog rau ua ntej -welded lugs, xyuas kom muaj kev sib npaug thiab muaj kev nyab xeeb thaum thauj khoom loj.
FAQ:
Cov ntaub ntawv dab tsi koj yuav tsum tau hais txog lub thawv steel girder?
Txhawm rau muab cov lus qhia ruaj khov peb xav tau qhov tsawg kawg nkaus: ncua ntev thiab txoj kev / marina dav, qauv thauj khoom (HL-93 lossis zoo sib xws), phaj thickness thiab qib, thiab yuav tsum muaj kev tiv thaiv saum npoo. Nrog tsuas yog ncua thiab dav peb tuaj yeem muab cov peev txheej qhia tau hauv 24 teev, tom qab ntawd tus nqi lees paub thaum tus qauv tsim tau muab.
Leej twg yog lub khw / erection nthuav dav, thiab tus neeg tau txais dab tsi?
Peb ua tiav 3D BIM nthuav dav hauv Tekla los ntawm koj qhov kev tsim qauv, tsim cov duab kos / erection, daim -cim txiav / tsim cov sijhawm thiab daim nqi ntawm cov ntaub ntawv rau koj kev pom zoo ua ntej fabrication. Lub voj voog nthuav dav yog ua raws li koj qhov project program.
Yog teb splices welded los yog bolted, thiab txoj kev txiav txim siab li cas?
Lub thawv loj girders feem ntau yog spliced nyob rau hauv daim teb nrog welded taub qab pob qij txha ntawm lub vev xaib - thiab - flange, lossis nrog siab - lub zog preloaded bolts qhov twg erection ceev thiab ntawm - qhov chaw soj ntsuam teeb meem. Qhov kev xaiv nyob ntawm qhov chaw nkag, lub peev xwm crane, huab cua thiab koj qhov specification.
Yuav ua li cas koj tswj flatness thiab vuam deformation ntawm loj ntu?
Fit-up yog anchored los ntawm ib tug tshwj xeeb los ua ke jig, tswj SAW cua sov input nyob rau hauv ib tug sib npaug zos sequence, thiab kev nyuaj siab-reliving ua ntej zaum kawg kaw. Camber thiab flatness yog teem thiab ntsuas ua ntej xa tawm yog li qhov chaw kaw nyob twj ywm nyob rau hauv kam rau ua.
Koj puas tuaj yeem ua raws li thib peb - tog lossis cov neeg siv khoom tshuaj xyuas thaum tsim khoom?
Yog lawm. Peb zoo siab txais tos cov neeg siv khoom thiab thib peb - tog (TPI) cov neeg soj ntsuam hauv lub khw, koom tes nrog tuav- cov ntsiab lus tshuaj xyuas (cov khoom siv raw, vuam, qhov ntev, qhov kawg haum-nce) thiab teeb meem NDT/UT-RT cov ntaub ntawv thiab MTC (EN 10204 3.1).
Cov cuab yeej siv hauv chaw thiab cov xwm txheej dab tsi uas tus neeg siv khoom npaj rau erection?
Erection ib txwm xav tau ib lub crane ntawm qhov muaj peev xwm txaus thiab ib qho laydown strips, kev txhawb nqa ib ntus yog tias tus tsim xav tau, thiab lub platform ua haujlwm sib npaug rau peb ntu ntu. Peb muab cov txheej txheem erection thiab ntu nqa cov ntsiab lus.
