公路路基加固加宽施工技术研究

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中图分类号：U416.1 文献标志码：A 文章编号：2095-2945(2025)14-0178-04

Abstract:Softsoilfoundation treatmenttechnologyplaysacrucialroleinensuringthestabilityoftheroadbedinhighway reconstructionandexpansionprojects.Thisarticle takesthewideningprojectofsoftsoilsubgradeasthebackground，and conductsasystematicstudyontwo foundation treatmentschemes: CFGpileandhigh-pressrerotary jet groutingpile.Combined withengineringpractice,itcomparesandanalyzestheirtechnicalcharacteristicsandapplicationefects.Throughengiering caseverfication,itwasfoundthatthedesignofCFGpilesneedstofocusoncordinatingtheselectionandthicknesscontrolof bufferlayermaterials,matchingofpilestrengthoptimizationofpilespacing,selectionofpilediameter,anddetermnationofpile length，amongotherkeyparameters，toensurethatthecombinationofvariousparametersmetsthegeologicalconditionsand constructionqualityrequirementsonsite.Duringtheconstructionprocess,itisimportanttofocusoncontrolingthequalityofthe lowerpartofthepilebody，scientificalldevelopingaconstructionscheduletoavoiddamagetothecontinuityofthepilebody， andestablishingapreventionmechanismandemergencyresponse planforpilebreakage isses.Theresearchresultsindicatethat thereasonableaplicationofflexiblereinforcementcushiontechnologyinCFGpilecompositefoundationcansignificantlymprove theoverallbearingperformanceofthefoundation，efectivelyregulatetheloaddistribution，andsupressdferentialsetlement. Comparedwithhigh-presurerotaryjetgroutingtechology，CFGpileshaveobviousadvantagesinsoftsoilreinforcementffect andeconomy.Thequalityofpileformationandconstructioneficiencyhaveahigherdependenceonmechanicalselection, processparameters，andprocesscontrol.Thisresearchachievementprovidesimportanttechnicalreference forthecomparisoand construction quality control of soft foundation treatment schemes in similar projects.

Keywords: highwaysubgrade;reinforcement treatment; widening treatment; constructionscheme；soft soil subgrade

随着中国经济的快速增长，基础设施建设迎来重大发展契机，其中高速公路改扩建工程已成为提升交通网络效能的重要举措。（剩余6341字）