1. High - kev tsheb ciav hlau ceev sib txawv li cas?
Qhov tseem ceeb sib txawv:
Tighter geometric kam rau ua± 1mm thiab ± 3mm
Softer rail pads(50-80kN / hli)
Nruam welded kev tsim kho
Txhim kho cov kua dej
350km / h kab yuav tsum tau kuaj xyuas tsheb geometry txhua hnub.
2. Dab tsi yog qhov kev ua haujlwm ntawm kev tsheb ciav hlau?
Rail pads:
Absorb 15-30% ntawm dynamic loads
Hluav taws xob insulate nyob rau hauv electrified lem
Compensate rau sleeper nto irregularities
Qhov zoo tshaj plaws nruj yog 50-200kN / mm nyob ntawm hom tsheb.
3. Dab tsi ua rau kev tsheb ciav hlau nkag thiab nws tswj tau li cas?
Cov txiaj ntsig tau los ntawm:
Thermal cycling
Log traction rog
Qib cov teebmeem
Tswj txoj kev:
Anchors txhua 12 sleepers
Kev sib txhuam- nce ballast
Anti- cov kab nrib pleb
Tus nqi creep yog 2-5mm / hli hauv tangent khiav.
4. Cov kev tsheb ciav hlau raug tshuaj xyuas hauv qhov av li cas?
Qhov kev soj ntsuam cov nyom yuav tsum tau:
Compact ultrasonic crawlers
Laser profileing ntawm taug kev ceev
Txhim kho teeb pom kev zoo
Cov av noo nrawm nrawm, xav tau ob- kev tshuaj xyuas txhua hli piv rau peb lub hlis twg hauv huab cua qhib.
5. Dab tsi yog qhov tseeb rail sib tsoo tshuab?
Innovations muaj xws li:
Robotic sib tsoo taub hau(0.1 hli precision)
Tiag - sijhawm scanning profile
EMAT (Electromagnetic Acoustic Transducer) ua ke sib tsoo
Cov tsheb ciav hlau niaj hnub tuaj yeem tshem tawm 0.2 hli txheej thaum kuaj pom qhov tsis zoo.