Tsis ntev los no, nrog rau kev nce qib ntawm kev loj hlob hauv nroog thiab kev ua kom sai ntawm cov haujlwm tseem ceeb hauv kev tsim kho vaj tse, qhov kev thov rau cov hlau ua haujlwm siab tau nce siab. Ntawm lawv,H-beam, ua ib qho tseem ceeb hauv kev tsim kho, tau dhau los ua tus tsav tsheb tseem ceeb rau kev txhawb nqa kev txhim kho zoo ntawm kev lag luam kev tsim kho, nrog nws cov khoom siv kho tshuab zoo heev thiab cov xwm txheej siv dav dav ua rau muaj kev hloov pauv tshiab hauv kev ua lag luam.
Hauv ib qhov project loj loj hauv East China, ib pawg ntawmHEB 150 H-beamsnyuam qhuav tau muab tso rau hauv kev tsim kho vaj tse tseem ceeb. Raws li tus qauv European H-beam, HEB 150 tau txais kev nyiam los ntawm cov chav tsev tsim kho vim nws txoj kev tsim qauv sib npaug, kev tiv taus khoov tau zoo thiab lub peev xwm thauj khoom ruaj khov. "Piv nrog cov hlau ib txwm muaj, HEB 150 tuaj yeem txo cov pob qij txha sib dhos los ntawm 30% hauv cov txheej txheem tsim kho, ua rau lub sijhawm tsim kho luv dua thaum ua kom muaj kev nyab xeeb ntawm cov qauv," tus thawj coj ua haujlwm hais. Daim ntawv thov no tsis yog tsuas yog txheeb xyuas qhov txiaj ntsig ntawm cov khoom lag luam H-beam hauv kev tsim kho vaj tse xwb, tab sis kuj muab cov ntaub ntawv rau kev txhawb nqa cov qauv hlau hauv kev lag luam.
Txawm hais tias cov qauv txheem siv dav dav,Cov khoom siv H-beam ua haujlwm siabsawv cev los ntawmASTM A572-50 H beamskuj tseem tab tom ua kom lawv nkag mus rau hauv cov haujlwm tseem ceeb. Nws nkag siab tias ASTM A572-50 H beams muaj qhov kub qis zoo heev thiab tiv taus corrosion, thiab lawv lub zog tso zis tuaj yeem ncav cuag ntau dua 345MPa, uas yog qhov tshwj xeeb tshaj yog rau cov chaw ua haujlwm loj, cov choj txoj kev loj thiab lwm yam haujlwm uas muaj cov qauv siab. Tam sim no, hauv kev tsim kho ntawm tus choj hla dej hauv South China, ASTM A572-50 H beams tau siv rau hauv cov qauv truss tseem ceeb, daws tau qhov teeb meem ntawm kev tuav lub siab nyob rau hauv cov huab cua nyuaj thiab ua kom lub neej kev pabcuam ntawm tus choj.
Tsis tas li ntawd,ASTM A572-50 dav flange beams, ua ib yam khoom ntawm H-beam, tau nthuav dav ntxiv rau qhov kev siv H-beam hauv kev lag luam kev tsim kho. Nrog nws qhov dav flange dav dua, hom beam no tuaj yeem faib cov khoom thauj zoo dua thiab txhim kho kev ruaj khov ntawm cov qauv. Nws tau siv dav hauv kev tsim kho cov chaw lag luam loj thiab cov chaw tsim khoom lag luam hauv xyoo tas los no. Ib tus neeg saib xyuas lub tuam txhab tsim khoom hlau tau hais tias: "Hauv thawj ib nrab ntawm lub xyoo no, qhov ntim xaj ntawm ASTM A572-50 dav flange beams nce 40% xyoo-rau-xyoo, thiab cov khoom kuj tau xa tawm mus rau cov lag luam sab hnub tuaj Asia, ua qhov chaw loj hlob tshiab rau peb txoj kev lag luam xa tawm."
Cov neeg sab hauv kev lag luam tau taw qhia tias kev txhim kho sai ntawm H-beam rau kev tsim kho tsis yog tsuas yog qhia txog kev txhim kho ntawm kev lag luam kev tsim kho qhov kev thov rau cov hlau zoo, tab sis kuj txhawb nqa kev tsim kho tshiab ntawm kev lag luam hlau. Yav tom ntej, nrog rau kev txhim kho tas mus li ntawm cov qauv hauv tebchaws rau cov tsev ntsuab thiab kev tsim kho qis-carbon, cov khoom H-beam nrog kev ua tau zoo dua, kev tiv thaiv ib puag ncig ntau dua thiab kev sib txawv ntau dua yuav ua lub luag haujlwm tseem ceeb hauv kev txhawb nqa kev txhim kho zoo ntawm kev lag luam kev tsim kho.
Chaw Nyob
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Lub sijhawm tshaj tawm: Cuaj hlis-05-2025