1. Dab tsi yog European UIC 60 rail kev sib raug zoo nrog ntau hom sleeper (ntoo, qhob, composite)?
UIC 60 yog sib xws nrog txhua hom pw tsaug zog, nrog kev hloov me me: 1.Ntoo pw: Siv Pandrol clips los yog aub spikes kom ruaj ntseg UIC 60-ntoo qhov yooj yuav tsum tau me ntsis siab dua torque (200–220 N·m) kom cov tsheb ciav hlau nruj . 2.Qhob pw tsaug zog: Ua ke nrog elastic rail pads (10mm tuab) kom nqus tau kev co; UIC 60's 150mm lub hauv paus dav sib tw cov qauv pob zeb pw tsaug zog, ua kom qhov chaw ruaj khov . 3.Composite sleepers (fiberglass-cov khoom siv yas): Siv stainless hlau fasteners kom tsis txhob galvanic corrosion; UIC 60 qhov hnyav (60kg / m) tau zoo- txhawb nqa los ntawm cov neeg pw tsaug zog 'siab load peev xwm. Qhov kev sib raug zoo no ua rau UIC 60 yog qhov kev xaiv zoo tshaj plaws rau kev sib xyaw- pw tsaug zog tes hauj lwm (piv txwv li, Europe txoj kev hla- ciam teb railways nrog ob qho tib si pob zeb thiab ntoo pw).
2. Dab tsi yog "rail thermal contraction," thiab yuav ua li cas railways tiv thaiv nws los ntawm kev tawg ntawm CWR?
Rail thermal contraction yog qhov shrinkage ntawm CWR nyob rau hauv huab cua txias (≈0.8mm ib meter rau txhua txhua 10℃kub poob), tsim tensile kev nyuaj siab uas yuav tawg txoj kev tsheb ciav hlau. Txhawm rau tiv thaiv qhov no: 1.Teeb qhov nruab nrab qhov kub thiab txias: CWR muab tso rau ntawm qhov kub uas sib npaug rau lub caij ntuj sov nthuav dav thiab lub caij ntuj no contraction (xws li, 25℃nyob rau hauv temperate regions)- huab cua txias yuav tsis rub lub tsheb ciav hlau nruj heev . 2.Siv cov pob qij txha nthuav dav hauv thaj chaw txias: Hauv thaj chaw uas muaj -30℃+ lub caij ntuj no (piv txwv li, Canada), ntu CWR luv (500m) txuas nrog cov pob qij txha me me kom tso cai rau kev cog lus. 3.Nruab rail anchors: Clamp CWR rau cov neeg pw tsaug zog kom faib cov nro sib npaug, tiv thaiv kev ntxhov siab ntawm cov ntsiab lus tsis muaj zog. Kev ntsuas kub tsis tu ncua nyob rau lub caij ntuj no tseem cia cov tsheb ciav hlau kho cov kev txwv ceev yog tias muaj kev pheej hmoo ntawm kev cog lus siab.
3. American AREMA 132RE rail hnav tus nqi yog dab tsi, thiab nws piv rau UIC 60 li cas?
AREMA 132RE muaj qhov hnav qis ntawm ~ 0.1mm ib lab tag nrho tons (MGT) ntawm kev khiav tsheb, ua tsaug rau nws 340-400HB cua sov- kho lub taub hau. Los ntawm kev sib piv, UIC 60 (300-350HB taub hau) muaj qhov hnav ntawm ~ 0.15mm ib MGT. Qhov sib txawv no yog qhov tseem ceeb rau hnyav- cov kab tsheb thauj mus los: AREMA 132RE rail tuav 35t axles tuaj yeem kav 30-35 xyoo (vs. 20-25 xyoo rau UIC 60) ua ntej yuav tsum tau hloov. Tus nqi hnav yog ntsuas los ntawm laser profile scans txhua 6 lub hlis-AREMA 132RE lub taub hau tuab (38mm vs. UIC 60's 35mm) kuj tseem muab cov khoom hnav ntau dua, ua kom nws lub neej ua haujlwm ntev. Rau ultra- thauj khoom hnyav (piv txwv li, North American thee tsheb ciav hlau), tus nqi qis dua no txo cov nqi kho kom zoo.
4. Dab tsi yog "kev sib koom ua ke ntawm txoj kab sib txawv," thiab vim li cas nws thiaj li tsim nyog rau kev sib koom ua ke zoo li UIC 54?
Rail Joint Gap hloov kho yog cov txheej txheem ntawm kev kho qhov khoob me me (10-15mm) ntawm qhov sib koom ua ke ntawm cov tsheb ciav hlau kom haum rau lub caij ntuj sov hloov. Nyob rau lub caij ntuj sov, qhov sib txawv nqaim raws li txoj kab txuas ntxiv; Nyob rau hauv lub caij ntuj no, qhov sib txawv widen li rails cog lus. Rau UIC 54 kev sib koom ua ke, qhov kev hloov kho no yog tsim nyog rau: 1.Tiv thaiv buckling: Ib yam nkaus thiab- qhov khoob me me nyob rau lub caij ntuj sov ua rau cov tsheb sib tsoo sib tsoo, ua rau buckling. 2.Tsis txhob dhau qhov khoob: Ib yam nkaus thiab- qhov khoob loj hauv lub caij ntuj no tsim kev caij tsheb thiab ua rau muaj kev cuam tshuam rau cov ntses, hnav UIC 54 qhov kawg ntu sai dua. 3.Tswj ntsuas ntsuas: Qhov sib txawv tsis sib xws tuaj yeem hloov cov tsheb ciav hlau, cuam tshuam kev ntsuas kev ntsuas. Kev hloov kho tau ua ob zaug hauv ib xyoos (caij nplooj ntoos hlav/lub caij nplooj zeeg) siv qhov sib txawv ntawm qhov sib txawv- cov neeg ua haujlwm ntxiv / tshem tawm shims ntawm fishplates los teeb qhov sib txawv rau qhov loj me rau lub caij.
5. Suav GB 50kg / m rail yog dab tsi, thiab nws siv nyob rau hauv nroog metro systems li cas?
GB 50kg/m yog ib qho nruab nrab - nyhav rail tsim rau Tuam Tshoj lub nroog metro systems (xws li Shanghai Metro, Beijing Subway). Nws hnyav 50kg / m, nrog 72mm lub taub hau dav thiab 145mm puag dav - zoo tagnrho rau cov tsheb ciav hlau metro (qag loads tsawg dua lossis sib npaug li 18t, ceev tsawg dua lossis sib npaug li 80km / h). Nws lub taub hau yog cua sov{12}}kho rau 320–350HB, tiv taus hnav los ntawm kev nres ntau zaus- pib thiab nres plua plav. Txoj kev tsheb ciav hlau tau koom ua ke rau hauv 25m CWR (luv luv dua mainline 100m) kom haum metro tunnels thiab chaw nres tsheb, txo cov pob qij txha thiab suab nrov (tseem ceeb rau qhov chaw hauv av). Nws kuj tseem siv epoxy coatings los tiv thaiv corrosion los ntawm qhov dej dampness. GB 50kg / m sib npaug durability thiab nqi, ua nws tus qauv rau Tuam Tshoj tus 5000+ km ntawm metro khiav.