Fastening System ntawm Turnout rau High-Speed Railway
Rau high-ceev railway, fastening system ntawm turnout nyob rau hauv tsim yog nteg kev nyuaj siab rau ua tau raws li ob qho tib si kev ua tau zoo raws li txoj cai thiab haumxeeb yuav tsum tau nyob rau hauv lub teb chaws Yelemees thiab Fabkis.
Nyob rau hauv lub turnout cheeb tsam ntawm lub teb chaws Yelemees rigidity ntawm fastening system yog teev raws li nram no: Raws li V<160km/h, only rubber pad under rail; As 160km/h≤V＜220km/h, rigidity:30kn/mm; As V≥220 km/h, rigidity for ballasted and non-ballasted track: 17.5KN/mm.
Rau rigidity tsim ntawm turnout cheeb tsam nyob rau hauv lub teb chaws Yelemees, kev nyuaj siab nyob rau hauv rail tsis ntau tshaj 75mPa. Thaum qag load yog 23t, rail ntsug rigidity yog 17.5kn / mm. Lub rigidity zoo li qub yog muab los ntawm elastic puag phaj (kev sib txuas ntawm cov roj hmab ncoo thiab khi phaj los ntawm vulcanization technology). Kev kuaj qaug zog ntawm elastic puag phaj qhia tias qhov nce ntawm qhov ntsuas yog tsawg dua 1 hli. Qhov sib piv ntawm dynamic thiab zoo li qub rigidity yog 1.2-1.3. Qhov sib txawv ntawm rigidity ntawm turnout cheeb tsam thiab lub caij nyoog yog kov yeej los ntawm kev teeb tsa elastic hla. Tsheb ciav hlau yuav hla nws hauv 0.5s.