小型液压捣固机捣固参数对有砟道床稳定性影响规律研究

打开文本图片集

中图分类号：U213.72 文献标志码：A 文章编号：2095-2945（2026）01-0088-06

Abstract：Withtheincreasing demandforrailwaytransportation，smallhydraulic tamping machines have becomean importantsupplementtolarge-scaletampingequipmentduetotheiradvantagesofsmallsize，strongmobilityandlowcost. However，systematicresearchontheirtampingparametersisstillinsuficient.Inthispaper，thetrack lfting heightandtamping timesareusedasindependentvariables，andthelateralresistanceandcompactioncharacteristicsofthetrackbedareusedas dependentvariables.Basedonfieldtestsanddiscreteelement simulations，thispaperanalyzesthemechanismoftheactionofa smallhydraulictamping machineonthestabityofthetrackbedduring tamping.Theresultsshowedthat：Boththetracklifting heightandthenumberoftampingtimeshaveacertaininfluenceonthelateralresistanceandcompactnessofthetrackbed; whenthetrackliftingheightincreases，thelateralresistanceofthetrackbedwillcontinuetodecrease，andthedeclinetrend willbecomeslowerafter3Omm；whenthenumberoftampingtimesincreases，thelateralresistanceofthetrack bedwill increasefirstandthendecrease，andwillreachapeakduringthreetimesoftamping;Basedontheevaluationof trackbed tightnessandlateralresistance，itisrecommendedtouseatrack liftingheightof2Ommforsmallhydraulictampingmachines and implement 2～3 times of tamping to optimize the maintenance effect of ballast bed.

Keywords：smallhydraulictampingmachine;tampingtime;track liftingheight;discreteelementmethod;trackbedlateral resistance;compactness

随着全球铁路运输业的快速发展，铁路基础设施的建设和维护对于保证运输安全和效率至关重要。（剩余7344字）