qhia txog cov khoom
Steel box beam, tseem hu ua steel kem girder, yog ib qho kev siv cov qauv siv rau cov choj ntev. Feem ntau siv rau cov txuas txuas loj, nws yog hu ua steel box girder vim nws zoo li lub thawv.Nws tuaj yeem muab faib ua peb hom: ib lub thawv girder choj, ob lub thawv girder choj, thiab ntau lub thawv girder choj.
Nyob rau hauv loj-span cable-txhawb txuas hniav, lub thawv steel lub ntsiab girder spans ob peb puas meters los yog txawm ntau txhiab meters.
Nws tau muab faib ua ob peb ntu ntu rau kev tsim khoom thiab kev teeb tsa, thiab nws cov ntu ntu muaj cov yam ntxwv ntawm cov duab dav thiab tiaj tus, thiab qhov sib piv mus txog li 1:10. Steel kem girder feem ntau yog tsim los ntawm tag nrho cov welding saum phaj, hauv qab phaj, web, thiab transverse partitions, longitudinal partitions thiab stiffeners. Cov phaj saum toj kawg nkaus yog lub lawj orthotropic uas tsim los ntawm cov phaj npog thiab longitudinal stiffeners. Lub thickness ntawm txhua phaj ntawm ib tug raug steel lub thawv girder yuav ua tau: npog thickness 14 hli, longitudinal U-shaped tav thickness 6 hli, lub qhov ncauj sab sauv dav 320 hli, lub qhov ncauj dav dav 170 hli, qhov siab 260 hli, sib nrug 620 hli; hauv qab phaj thickness 10mm, longitudinal U-puab stiffeners; Lub thickness ntawm lub web inclined yog 14 hli, lub thickness ntawm nruab nrab web yog 9 hli; qhov sib nrug ntawm qhov sib tshooj yog 4.0m, thiab lub thickness yog 12 hli; Qhov siab ntawm lub beam yog 2-3.5 m.
Steel kem girder yog ib qho qauv siv feem ntau siv hauv engineering. Txhawm rau kawm txog qhov sib txawv ntawm qhov sib txawv ntawm cov diaphragms ntawm qhov sib txawv ntawm qhov yooj yim txhawb nqa steel lub thawv girder nyob rau hauv cov ntsiab lus hnyav, cov kev txhawb nqa yooj yim steel lub thawv girder nrog cov lej sib txawv ntawm cov diaphragms tau teeb tsa los sib piv nws cov nyhuv Distortion thiab nruj torsion nyhuv. nyob rau hauv load, qhov kev hloov nkhaus ntawm qhov siab tshaj plaws distortion nyhuv nrog tus naj npawb ntawm diaphragms tau txais. Concentrated load yog siv rau sab saum toj ntawm lub thawv girder web, thiab nws yog saws raws li plaub yam kev ua hauj lwm ntawm distortion, nruj torsion, symmetrical dabtsi yog khoov thiab eccentric load. Tus txheej txheem ntawm load decomposition yog xam.
Zhenjiang Great Phab Ntsa Hnyav kev lag luam muaj ntau tshaj 50 tons ntawm cranes, kev tsim, vuam, thiab kev teeb tsa pab pawg ua haujlwm tsim khoom thiab teeb tsa ntawm ntau lub thawv steel kab teeb.
Cov khoom siv
Vim nws cov qauv tsim, steel kem girder feem ntau yog siv rau hauv nroog elevated thiab ramp steel box girder; kev tsim kho lub sij hawm tsheb thauj neeg lub koom haum ntev-ntev cable-nyob choj, ncua kev kawm ntawv choj, koov choj stiffening girder thiab cov neeg taug kev choj steel lub thawv girder.
Khoom zoo
1. Lub zog tensile siab thiab siab bearing muaj peev xwm
2. Cov qauv teeb pom kev zoo, haum rau cov txuas txuas ntev
3. Kev teeb tsa yooj yim, tus nqi qis, lub voj voog luv
4. Guaranteed zoo thiab kom muaj nuj nqis, thiab kev ntseeg siab
5. Kev tsim kho kev ua haujlwm siab thiab kev nyab xeeb siab
