Daim ntawv thov ntawm prestressed pc steel hlau hauv kev tsim kho engineering, koj puas paub txog nws?

Kev xaiv cov khoom siv ua lub luag haujlwm tseem ceeb thaum tsim kom muaj lub tsev ruaj khov thiab ruaj khov. Cov hlau ua los ntawm cov pob zeb prestressed, feem ntau hu uaPC hlau xaimlos yog cov hlau prestressed, tau dhau los ua ib qho tseem ceeb uas cov kws tshaj lij kev tsim kho thoob ntiaj teb siv. Nws lub zog tshwj xeeb thiab kev ywj pheej ua rau nws yog qhov kev daws teeb meem rau cov engineers uas xav tsim cov qauv uas tuaj yeem tiv taus cov khoom hnyav, huab cua hnyav thiab kev sim sijhawm. Hauv tsab xov xwm no, peb yuav saib tob txog ntau daim ntawv thov ntawmcov hlau ua los ntawm cov pob zeb prestressedhauv cov haujlwm tsim kho.
Cov hlau ua los ntawm cov pob zeb ua ntej, feem ntau yog 4 hli txoj kab uas hla, nyob hauv qhov chaw tseem ceeb hauv cov khoom siv hauv tsev. Nws cov qauv tsim tshwj xeeb ua rau lub zog sib txuas ntawm cov hlau hlau thiab cov pob zeb ua kom lub zog thauj khoom ntawm cov qauv siab tshaj plaws. Cov qauv ribbing no kuj pab faib kev ntxhov siab sib npaug thoob plaws hauv cov hlau, ua kom muaj kev ua tau zoo dua.
Ib qho ntawm cov ntawv thov tseem ceeb ntawmcov hlau ua los ntawm cov pob zeb prestressedyog nyob rau hauv cov khoom siv ua vaj tse precast. Precast concrete muaj ntau qhov zoo los ntawm kev muab ib puag ncig tsim khoom tswj hwm los tsim cov khoom zoo. Cov chaw tsim khoom siv hlau prestressed muab cov hlau prestressed tso rau hauv cov khoom siv ua vaj tse precast xws li beams, kem, thiab slabs kom txhawb lawv. Cov thev naus laus zis no ua rau muaj peev xwm nqa khoom ntawm cov khoom no ntau dua thaum txo lawv qhov hnyav tag nrho.
Tsis tas li ntawd xwb,hlau ua ntejyog siv dav hauv kev tsim cov choj thiab viaducts. Vim muaj tsheb coob thiab raug rau lub zog ntuj, cov qauv no xav tau lub zog thiab kev ywj pheej zoo kawg nkaus. Los ntawm kev siv cov hlau pc spiral thaum lub sijhawm tsim kho, cov engineers tuaj yeem ua rau lub zog thiab kev ruaj khov ntawm cov qauv, tiv thaiv kev phom sij thiab txuas ntxiv nws lub neej kev pabcuam.

Daim ntawv thov ntawmkauv hlau PC hlauhauv cov haujlwm tsim kho tsis tuaj yeem tsis quav ntsej.PC hlau 4 hlisiv los tsim cov kav dej ua los ntawm cov pob zeb, cov ncej, thiab cov thoob dej hauv av. Nws cov duab sib dhos ua rau nws tiv taus cov zog tensile siab, ua rau muaj kev sib khi ua ke ntawm cov qauv cylindrical. Cov yam ntxwv ntawm cov hlau PC sib dhos ua ke nrog nws qhov kev ywj pheej tshwj xeeb ua rau nws zoo tagnrho rau kev tsim cov kav dej ua los ntawm cov pob zeb ruaj khov thiab tiv taus xeb thiab cov khoom sib dhos zoo sib xws.
Hauv kev xaus lus, qhov ua tau ntau yam ntawm cov hlau ua los ntawm cov pob zeb prestressed hauv ntau yam kev siv hauv kev tsim kho tsis muaj qhov sib piv. Txawm hais tias siv rau hauv cov khoom precast, kev tsim choj lossis cov kav dej ua los ntawm cov pob zeb, nws lub zog zoo kawg nkaus, kev ywj pheej thiab kev sib txuas zoo dua pab tsim cov qauv ruaj khov thiab kav ntev. Cov kws tshaj lij kev tsim kho thoob ntiaj teb vam khom rauhlau hlau uas tau ua kom nrujkom ntseeg tau tias lawv cov haujlwm ua tau raws li cov qauv kev nyab xeeb thiab kev ua haujlwm ntev tshaj plaws.