1. Dab tsi yog qhov sib txawv tseem ceeb ntawm cov ntoo thiab pob zeb railway sleepers hais txog kev ua haujlwm ntev?
Ntoo sleepers feem ntau kav 15-25 xyoo nrog kev saib xyuas kom zoo, thaum cov pob zeb pw tsaug zog muaj lub neej ntev ntawm 30-50 xyoo vim lawv tsis kam rot thiab hnav.
2. steel-cov pob zeb ua kom muaj zog sib txawv li cas ntawm cov pob zeb pw tsaug zog hauv kev thauj khoom-cov kabmob muaj peev xwm li cas?
Steel- cov pob zeb ua kom muaj zog tuaj yeem tiv taus ntau dua qag (txog 30 tons) vim yog cov hlua khi steel uas txhim khu lub zog tensile, thaum cov pob zeb ua rau cov pw tsaug zog yog txwv rau 20-25 tons.
3. Dab tsi ua rau cov neeg pw tsaug zog sib xyaw (fiberglass + yas) haum rau kev tsheb ciav hlau hluav taws xob?
Composite sleepers tsis yog -conductive, tiv thaiv hluav taws xob tam sim no los ntawm kev sib tsoo thiab cov trackbed, uas yog qhov tseem ceeb rau cov tshuab hluav taws xob kom tsis txhob muaj luv luv.
4. Yuav ua li cas nqaim -gauge sleepers (1067mm) txawv ntawm tus qauv -gauge sleepers (1435mm) nyob rau hauv cov nqe lus ntawm qhov sib nrug?
Nqaim-gauge sleepers tau nyob ze ua ke (500–600mm) txhawm rau txhim kho kev ruaj ntseg, thaum tus qauv-gauge sleepers muaj qhov dav dua (600–700mm) kom sib npaug ntawm qhov hnyav.
5. Cov khoom siv dab tsi ua rau cov neeg pw tsaug zog zoo dua li softwood sleepers rau hnyav - tsheb ciav hlau?
Hardwood sleepers have higher density and compressive strength, resisting deformation under heavy axle loads (25+ tons) better than softwood, which may compress over time.