Nrog kev nrawm nrawm ntawm ntiaj teb URBANTIAS, TRACT Transit, raws li ib qho tseem ceeb ntawm kev thauj mus los hauv nroog niaj hnub no, muaj kev xav tau nce ntxiv rau kev tsim kho. Kev hla kev tsheb ciav hlau tsis tuaj yeem ua tau zoo rau hauv nroog loj hauv nroog loj, tab sis kuj txhawb txoj kev loj hlob ntawm kev lag luam hauv nroog loj. Nyob rau hauv cov ntsiab lus no, cov txheej txheem hluavtaws thiab thev naus laus zis thev naus laus zis ntawm kev hla kev tsheb ciav hlau tshwj xeeb yog qhov tseem ceeb.
Kev ciav hlau hla kev siv hluav taws xob synthesis hais txog cov ntawv thov nthuav dav ntawm ntau cov thev naus laus zis thiab cov khoom siv rau cov qauv, kev tsim kho thiab txij nkawm Transit. Cov hau kev no tsis tsuas yog suav nrog kev siv thev naus laus zis kev lag luam niaj hnub, cov ntaub ntawv kev tshawb fawb thiab ib puag ncig kev tiv thaiv thiab ib puag ncig kev tiv thaiv. Los ntawm cov ntawv thov tshwj xeeb ntawm cov thev naus laus zis, cov tsheb ciav hlau hloov pauv tau zoo dua hauv kev nyab xeeb, ua haujlwm tau zoo thiab kev nplij siab.
Nyob rau hauv xyoo tsis ntev los no, prestressed qheb tshuab tau tau siv dav hauv kev tsim kev tsheb ciav hlau. Qhov thev naus laus zis no txhim kho lub tensile thiab compressive lub zog ntawm cov khoom los ntawm pre- Kev sib zog ntawm cov chaw pabcuam ntawm cov chaw hloov chaw. Nyob rau tib lub sijhawm, kev siv cov pob zeb prestressed kuj yuav txo cov nqi txij nkawm thiab txhim kho kev lag luam ntawm tag nrho cov kab ke.
Ib qho ntxiv, daim ntawv thov ntawm cov ntaub ntawv tshiab tseem yog qhov tseem ceeb ntawm kev hloov pauv hluavtaws hluavtaws. Piv txwv li, kev siv siab - lub zog steel thiab siab {{pearing steel ntawm cov chaw hloov chaw, tab sis kuj txo qhov cuam tshuam rau ib puag ncig. Lub corrosion tsis kam thiab ruaj khov ntawm cov khoom siv ua kom cov chaw hla kev hloov chaw ua haujlwm los ua haujlwm nyob hauv thaj chaw hnyav.
Hais txog cov ntaub ntawv cov ntaub ntawv thev naus laus zis, daim ntawv thov ntawm kev tswj hwm kev tswj hwm ntse ua rau kev ua haujlwm ntawm kev hla kev hloov pauv ntau dua. Los ntawm tiag {{{1} Kev soj ntsuam xyuas lub sijhawm, cov haujlwm tuaj yeem hloov kho cov phiaj xwm kev nyab xeeb kom muaj kev nyab xeeb thiab ua kom muaj kev nyab xeeb.
Cov ciav hlau hla cov hluav taws xob hluavtaws hluavtaws yog cov khoom lag luam ntawm cov ntoo khaublig ntau -}}}}}}}}}}}}}}}}}}}}}}}}}}} kev koom ua ke. Nws tsis tsuas yog txhawb nqa kev nce qib ntawm kev hloov thev naus laus zis, tab sis kuj tseem muab kev txhawb nqa muaj zog rau kev txhim kho hauv nroog loj.
