Kev taw qhia txog qhov project thiab cov khoom ua tau zoo

Qhov project yog ib tug choj nrog ib tug tag nrho ntev ntawm 1,125 meters, thiab lub ntsiab choj yog ib tug ib leeg-span under-bearing steel box khi koov choj nrog ib tug ncua layout ntawm 170 meters. Tag nrho qhov dav ntawm tus choj loj yog 24.1 meters, thiab peb lub tuam txhab feem ntau muab kub-dip galvanized prestressed unbonded steel strands thiab Steel khi pas nrig ntawm ncua kev kawm ntawv nyob cables thiab lwm yam khoom.

Tus tsim yog yuav tsum tau hloov. Tus pas nrig txais φ15.2-12 thiab φ15.2-14 steel strand bundle extrusion ncua kev kawm ntawv, HDPE sheath cable lub cev. Lub steel khi pas nrig cable ncaj qha bears cov tuag load los ntawm kev sib xyaw beam thiab nyob load ntawm lub tsheb thiab tib neeg, uas yog ib qho tseem ceeb txuas nyob rau hauv lub zog xa xov saw ntawm lub under-supported koov choj. Qhov nruab nrab nruab nrab ntawm cov txuas txuas txuas nrog kab rov tav dai taw tes ntawm tus choj axis yog 6 meters. Sab saum toj kawg siv tag nrho cov pob khoom ntawm extrusion anchors, thiab qis kawg txais ib tus pin-hinged anchorage. Sab nrauv ntawm txheej txheej HDPE yuav tsum tau ua los ntawm cov kab sib txuas kom tiv thaiv cua thiab los nag los ntawm excitation.

Cov hlua khi hlua khi yog tsim los ntawm cov hlua khi hlua khi lub cev thiab cov hlua khi, thiab ob lub ntsiab nqaj yog txhua tus muab nrog 4x15.2-9 sab nraud prestressed steel strands los tsim ib txoj hlua khi hlua khi ntawm cov qauv; Kev tsim kho: Lub steel khi pas nrig ntawm kev ncua kev kawm cables yog tensioned thiab kho ntawm lub koov kawg. Sab saum toj kawg ntawm lub suspender yog anched nyob rau hauv lub arch rib, thiab qis kawg yog anchored rau lub lug. Cov hlua khi hlua khi yog raws li txheej txheem nyob rau hauv lub ntsiab longitudinal beam ntawm ob sab, thiab lub prestress ntawm khi pas nrig yog tensioned ntawm ob hnub, thiab muab ob npaug rau kev tswj yog saws thaum tensioning, thiab lub tensile quab yuam prevails, thiab elongation yog supplemented.

Cov khoom siv ntawm lub cev yog kub-dip galvanized unbonded prestressed steel strand, thiab lub zog ntawm cov hlau strand yog 1860MPa, uas ua tau raws li qhov yuav tsum tau ntawm ASTM A416 thiab GB / T33363-2016 "kub-dip galvanized prestressed steel strand"; Cov hlau strand yog qhwv nrog polyester high-strength fiber ntau daim kab xev, ces extruded ob txheej high-density polyethylene (HDPE); Cov qauv kev ua tau zoo ntawm cov thauj tog rau nkoj cable ua tau raws li tus qauv yuav tsum tau ua ntawm JT / T850-2013 "Extrusion & Anchor Steel Strand Tendons Cables"; Kev ua haujlwm ntawm lub thauj tog rau nkoj ua tau raws li tus qauv yuav tsum tau ua ntawm GB / T14370-2015 "Anchors, Clamps thiab Connectors rau Prestressed Tendons".

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