4.1路基防护与支挡工程施工概述课件讲解.pptx

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4.1路基防护与支挡工程施工概述课件讲解.pptx

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RoadbedConstructionTechnologyOverviewofsubgradeprotectionandretainingengineeringconstruction

FunctionofsubgradeprotectionSubgradeprotectiontypeDesignprinciplesofsubgradeprotectionGeneralrequirementsforsubgradeprotectionconstruction

Functionofsubgradeprotection1.Protectthesurfaceofsubgradeslopefromrainerosion;2.Slowdowntheinfluenceoftemperaturedifferenceandhumiditychange;

Functionofsubgradeprotection3.Preventanddelaytheweathering,fragmentationanddenudationevolutionprocessofsoftrockandsoilsurface;4.Improvetheoverallstabilityofslope;5.Greening.

SubgradeprotectiontypeSubgradeprotectiontypescanbedividedinto：Slopeplantandengineeringprotection、subgradeprotectionalongtheriver、anchorageandretainingprotection、protectivenetprotection.

Subgradeprotectiontype

Designprinciplesofsubgradeprotection1.Firstly,fullyinvestigatethenaturalconditionsoftheslope,anddeterminetheoveralldesignschemeonthebasisofmasteringthegeography,geology,slopeshape,soilcharacteristicsandclimateenvironment;2.Organiccombinationofpoint,lineandsurface,i.e.keyprotection,greeningandbeautificationinlocalsections,andtransitionaltreatmentinlocalsections;

Designprinciplesofsubgradeprotection3.Thedesignmethodadoptsthecombinationofnaturalstyleandregularstyle;4.Fromtheperspectiveofsafetyandaesthetics,considertheplantvarietyconfigurationandplantingformtoformtherhythmicchangeofcolorandcolorband;

Designprinciplesofsubgradeprotection5.Selectplantswithstrongsoilconsolidationandslopeprotection,mainlyplantinggrass,combiningshrubandgrass,givingconsiderationtoshort-termandlong-termwaterandsoilconservationbenefits,soastofundamentallypreventwaterandsoilloss.

Generalrequirementsforsubgradeprotectionconstruction1.Beforetheconstructionofsubgradeprotectionworks,theslopeshallbetrim