Standard for Control of Compression Permanent Deformation of Rail Pads
Dab tsi yog qhov compression mus tas li deformation ntawm rail pads, thiab nws qhov tseem ceeb yog dab tsi?
Compression mus tas li deformation yog hais txog tus nqi ntawm cov yas deformation uas lub tsheb ciav hlau tau dhau los tom qab tshem tawm ntawm lub sijhawm ntev - lub sijhawm thauj khoom, tiv thaiv nws los ntawm rov qab mus rau nws qhov qub thickness. Nws qhia txog lub ncoo qhov elasticity tuav thiab tiv thaiv - kev laus kev ua haujlwm. Qhov me me ntawm qhov deformation, qhov ruaj khov dua lub ncoo tuaj yeem muab kev txhawb nqa elastic nyob rau lub sijhawm ntev, kom ntseeg tau tias txoj kev taug qab qhov ntev geometric thiab kev vibration txo cov nyhuv.
Dab tsi yog qhov kev phom sij ntawm ntau dhau compression mus tas li deformation ntawm kev tsheb ciav hlau?
Kev deformation ntau dhau ua rau qhov tsis sib xws ntawm kev tsheb nqaj hlau, nce lub log- kev tsheb nqaj hlau; cuam tshuam kev sib tw nruj, txo kev vibration damping thiab buffering cuam tshuam; ua rau kev ntxhov siab tsis sib xws ntawm cov fasteners, ua rau bolt loosening thiab elastic clip breakage; accelerates kev puas tsuaj rau cov neeg pw tsaug zog, taug kev slabs, thiab ballast, ua rau cov nqi kho mob nce ntxiv.
Dab tsi yog cov ntsiab lus tseem ceeb cuam tshuam rau compression mus tas li deformation ntawm rail pads?
Cov khoom tsim (elasticity, cross-linking degree, thiab tiv thaiv- cov neeg ua haujlwm laus ntawm cov roj hmab, polyurethane, thiab roj hmab- cov khoom siv yas), cov qauv tsim (thickness, hardness, qauv, thiab txheej txheej), kev khiav hauj lwm ib puag ncig (kub, UV hluav taws xob, dej immersion, thiab corrosion), thiab cov xwm txheej cuam tshuam rau kev thauj mus los (axle load, axial load thiab corrosion) deformation.
Dab tsi yog cov qauv kev cai rau compression txheej ntawm cov ntaub qhwv hauv Suav teb?
Raws li cov qauv kev lag luam, cov txheej txheem compression ntawm cov pawm zoo tib yam yuav tsum tsawg dua lossis sib npaug li 15%; siab- kev ua tau zoo taug qab pads rau siab -ceev, hnyav-load, thiab ballastless lem yuav tsum tsawg dua los yog sib npaug li 10%; thiab kev vibration-damping track pads yuav tsum tsawg dua lossis sib npaug li 12%. Cov qauv tseem nruj dua rau qhov tshwj xeeb siab - kub thiab qis - qhov kub thiab txias ib puag ncig kom ntseeg tau ntev - lub sij hawm ruaj khov.
Yuav ua li cas txo compression teeb thiab txuas ntxiv lub neej kev pab cuam ntawm taug qab pads?
Xaiv cov khoom elastic heev, nkag siab-resistant, thiab laus- cov ntaub ntawv tiv taus; optimize tus qauv thiab hardness tsim; nruj me ntsis tswj cov txheej txheem ntau lawm thiab hla - txuas ceev; rationally match thickness thiab cov qauv raws li qib khiav; zam kev tsis sib xws thiab kev cuam tshuam thaum lub sijhawm teeb tsa; ua kev tshuaj xyuas tsis tu ncua thiab hloov cov ntaub qhwv ntau tshaj li cov qauv tam sim ntawd.