Taug qab ntu kev hloov pauv (choj, qhov, ballastless thiab ballasted) accessory adaptation technology
Vim li cas cov kab kev hloov pauv yog qhov siab - thaj chaw muaj kev pheej hmoo rau kev ua tsis tiav?
Qhov sib txawv ntawm cov qauv sib txawv ntawm ob sab ntawm qhov kev hloov pauv yog qhov tseem ceeb: txuas hniav, qhov taub, thiab cov kev sib tw tsis muaj zog muaj qhov tawv tawv thiab qis deformation; roadbeds thiab ballasted lem muaj qhov nruj thiab yooj yim rau kev sib hais haum. Thaum lub tsheb ciav hlau hla, lub log -rail cuam tshuam quab yuam, kev co lub zog, thiab lub zog ntev yog concentrated thiab tso tawm ntawm qhov hloov pauv, ua rau "kev cuam tshuam kauj ruam." Raws li kev cuam tshuam rov qab muaj zog, qhov hnav, qaug zog, deformation, thiab xoob ntawm cov ntsia hlau, fasteners, pads, sleepers, thiab ballast yog ntau dua ntawm cov kab tseem ceeb. Cov teeb meem xws li tawg elastic clips, crushed pads, xoob bolts, tawg pw tsaug zog, thiab misaligned pob qij txha tshwm sim ntau zaus. Yog li ntawd, txoj kev hloov pauv yog ib qho tseem ceeb ntawm txoj kab kev khiav hauj lwm thiab kev saib xyuas.
Dab tsi yog qee qhov kev siv feem ntau siv los ntsuas kev hloov pauv rau choj -txoj kev hloov pauv?
Ua ntej, hloov maj mam hloov hauv cov txheej txheem fastener: kho cov fastener stiffness maj mam los ntawm tus choj mus rau roadbed kom ua tiav ib qho kev sib hloov nruj thiab tsis txhob hloov pauv sai. Thib ob, cov khoom siv ntxiv dag zog: sib npaug siv lub siab- lub zog elastic clips, siab - cov ntaub qhwv toughness, thiab ntxiv dag zog rau cov pw tsaug zog lossis taug kev slabs hauv ntu kev hloov pauv los txhim kho kev cuam tshuam. Qhov thib peb, kev hloov kho qhov ntsuas: kho qhov siab fasteners thiab graded qhov siab- kho tau shims yog siv los pab kom ceev ceev ntawm txoj kev tsheb ciav hlau nto elevation thaum sib txawv kev sib haum xeeb tshwm sim, kom ib tug du kev hloov. Thib plaub, txoj kev taug kev hauv txaj tau ntxiv dag zog: zoo- qib ballast yog siv nyob rau sab subgrade, thiab compaction thiab kua dej yog txhim kho kom txo tau tom qab kev sib hais haum. Thib tsib, kev tsheb ciav hlau cov pob qij txha thiab qhov ntsuas kub ntawm qhov ntsuas kub yog qhov tsim nyog los txo qhov kev sib xyaw ua ke ntawm qhov kub thiab txias ntawm kev sib tsoo ntawm qhov kev hloov pauv.
Yuav ua li cas cov underlayment yuav tsum tau xaiv thiab npaj nyob rau hauv kev hloov pauv ntawm cov ballastless thiab ballasted seem?
Lub underlayment ntawm lub ballastless sab muaj qhov ruaj khov thiab zoo elasticity, thaum lub underlayment ntawm ballasted sab yuav tsum sib npaug elasticity thiab kev txhawb nqa. Feem ntau, ib qho elastic underlayment nrog maj mam hloov nruj yog siv nyob rau hauv txoj kev hloov pauv, nrog kev hloov pauv ntawm qhov siab mus rau qis qis los ntawm qhov kawg ntawm qhov kawg mus rau qhov kawg ballasted, zam cov kauj ruam nruj. Nyob rau tib lub sijhawm, qhov cuam tshuam thiab shear tsis kam ntawm underlayment yog txhim kho los ntawm kev siv ntau - txheej txheej txheej los yog siab - cov ntaub ntawv elastic modulus los tiv thaiv kev sib tsoo sai, deformation, thiab tsis ua haujlwm raws li kev cuam tshuam. Lub thickness, hardness, thiab nteg ntev ntawm lub screed yog txiav txim los ntawm dynamic xam raws li tus tsim ceev, qag load, thiab ntev ntawm txoj kev hloov mus rau lub log du -rail quab yuam kis tau tus mob.
Yuav ua li cas cov ntsia hlau thiab cov khoom siv sib koom ua ke hauv qhov kev hloov pauv tau txhawb nqa?
Siab - zog, siab - txoj kab du yog qhov tseem ceeb rau qhov kev hloov pauv kom txo tau qhov tsis xws luag thaum pib. Seamless khiav yog siv ntau npaum li qhov ua tau kom tshem tawm cov kev tsheb ciav hlau. Thaum cov pob qij txha yog qhov tsim nyog, cov phaj hlau txuas ntxiv, siab - lub zog bolts, thiab cov khoom siv los tiv thaiv -loosing yog siv los txhim kho tag nrho cov kev ncaj ncees ntawm kev sib koom ua ke. Cov kev tsheb ciav hlau xaus tau ntxiv dag zog los txo qhov kev pheej hmoo ntawm crushing, spalling, thiab chipping. Nyob rau tib lub sijhawm, qhov smoothness ntawm txoj kev tsheb ciav hlau ntawm qhov sib koom ua ke yog tswj hwm nruj, nrog qhov siab thiab qhov sib txawv ntawm qhov sib txawv nyob rau hauv 50% ntawm cov neeg nyob rau hauv cov pa lem los txo qhov cuam tshuam ntawm qhov chaw.
Yuav ua li cas cov kev pab cuam lub neej ntawm txoj kev hloov pauv tau txuas ntxiv los ntawm kev tswj cov khoom thaum lub sijhawm ua haujlwm thiab kev saib xyuas?
Ib daim ntawv tshuaj xyuas tshwj xeeb rau ntu kev hloov pauv yog tsim los ua kom luv luv ntawm lub voj voog tshuaj ntsuam. Kev soj ntsuam tseem ceeb tsom mus rau qhov sib txawv ntawm qhov sib txawv, kev tsheb ciav hlau nto smoothness, fastener torque, screed mob, thiab kev sib koom ua ke. Rau kev sib hais me me, cov khoom siv kho tau raug siv los kho kom tsis txhob loj - nplai tamping cuam tshuam rau lub txaj khiav. Rau qhov chaw uas tau pom cov tsos mob ntawm qaug zog, hnav, lossis kev laus, hloov lawv hauv cov khoom ua ntej, tsis yog tos kom txog thaum lawv ua tsis tiav. Muab cov cim meej meej ntawm ob qho kawg ntawm ntu kev hloov pauv kom ceeb toom cov neeg ua haujlwm saib xyuas kom ua tib zoo saib xyuas, ua ib daim ntawv qhia tag nrho -kev tswj hwm tus qauv ntawm "kev saib xyuas - kev ntsuam xyuas - zoo-tuning - hloov".