Steel Rail Failure Paub
Steel rail tsis ua haujlwm yog los cuam tshuam thiab txwv kev ua haujlwm ntawm kev tsheb ciav hlau hauv kev siv, piv txwv li, tawg, tawg thiab lwm yam. Raws li qhov chaw, qhov tsos thiab yog vim li cas ntawm qhov tsis ua hauj lwm qhia nyob rau hauv rail seem, steel rail tsis ua hauj lwm yuav muab faib ua 9 pawg thiab ntxiv muab faib ua 32 hom.
A. Hlau rail tawg
Rail breaking suav nrog cov xwm txheej hauv qab no: ua ntej, ntu ntu ntawm txoj kev tsheb ciav hlau tawg ua ob yam tsawg kawg; thib ob, qhov tawg tau dhau los ntawm ntu ntawm kev tsheb ciav hlau lub taub hau lossis kev tsheb ciav hlau ko taw; thib peb, spalling ntawm sab saum toj ntawm txoj kev tsheb ciav hlau yog ＞ 50 (30) hli ntev thiab ＞ 10 (5) hli tob hauv qhov loj.
Rail breaking ncaj qha hem lub tsheb ciav hlau kev nyab xeeb. Thaum ib qho ntawm cov xwm txheej saum toj no tshwm sim, qhov kev xaiv zoo tshaj plaws yog hloov cov tsheb ciav hlau hauv lub sijhawm.
B. steel rail tawg
Steel rail cracking yog tsim los ntawm qee qhov ntawm cov khoom siv tsheb ciav hlau sib cais los ntawm kev tsheb ciav hlau tshwj tsis yog kev tsheb ciav hlau tawg.
C. Steel rail hnav
Ua ntej, ntsug hnav
Vertical hnav tshwm sim ntawm cov ntsia hlau ntawm txhua hom kab, tshwj xeeb tshaj yog ntawm cov kab ncaj nraim thiab qhov nkhaus loj ntawm kev khiav. Nrog rau lub nra hnyav thiab tag nrho qhov hnyav ntawm lub tsheb ciav hlau nce, ntsug hnav yuav hnyav dua thaum taug kev geometry raug teeb tsa tsis raug.
Thib ob, sab hnav
Sab hnav yog tshwm sim los ntawm kev sib txhuam ntawm lub log thiab lub log zawv zawg.
Thib peb, corrugated hnav
Corrugated hnav tshwm sim nyob rau saum npoo ntawm kev tsheb ciav hlau nrog wavy tsis sib xws los yog crushing tawg.
Kev tso cai txwv ntawm kev siv tsheb ciav hlau yog nyob ntawm qhov muaj zog thiab cov txheej txheem. Nws muaj raws li hauv qab no: ua ntej, txaus lub zog thiab dabtsi yog khoov kuj nruj; Thib ob, lub log flange tsis tuaj yeem tiv tauj nrog kev tsheb nqaj hlau sib koom ua ke hauv qhov xwm txheej phem tshaj plaws; Thib peb, corrugated hnav rail yuav tsis ua rau kev puas tsuaj ntawm kev khiav thiab nce kev txij nkawm ua haujlwm.