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1、摘要本设计为贵州省水口至榕江格龙一级公路K0+000～K1+900段的初步设计。主要内容包括：平面设计、纵断面设计、横断面设计、路基设计、挡土墙设计、公路排水及防护工程、路面结构设计。在设计过程中参阅了相关文献资料，并严格按照规范标准设计。线形设计部分，充分考虑了地形地质、安全、环保、土地利用、施工条件及经济等因素；纵断面设计根据道路等级、沿线自然条件和构造物控制标高等确定路线合适的标高、各坡段的纵坡度和坡长，并设计竖曲线；在横断面设计部分综合考虑公路等级、行车要求、自然地质条件、施工方法，兼顾
2、当地农田建设，保证路基的稳定和排水，来作出正确的设计。在路基设计部分选择合理的路堤填料与压实标准；在挡土墙设计部分，采用了重力式挡土墙，倾斜基底，充分考虑了挡土墙的经济性和安全性；在公路排水及防护工程部分充分考虑到当地地质状况，以及美化环境、改善景观和舒缓驾驶人员视觉疲劳等因素，对该路段部分边坡采用草皮护坡以及窗式护面墙等进行防护；在路面结构设计部分，根据设计要求和实地情况选用了沥青混凝土路面。关键词：一级公路；平纵横设计；路基设计；挡土墙设计；路面设计ABSTRACTThisdesignstu
3、diesthefirst-classhighwayfromShuikou,GuizhoutoRongjiangwhichcoversK0+000~K1+900,including:graphicdesign,alignmentdesign,cross-sectionaldesign,roadbeddesign,retainingwalldesign,roaddrainageaswellasprotectiveengineeringandpavementstructuredesign.Thedes
4、ignisinstrictaccordancewiththecodestandardandconsultsrelatedreferences.Thefactorsoftopography,geology,safety,environmentalprotection,landuse,constructionconditionandeconomicsweretakenintoconsiderationinlineardesin;inthelignmentdesign,accordingtothero
5、adgrade,naturalconditionsandcontrolelevationofstructure,thedesigndeterminestheappropriateelevation,thelongitudinalslopeandslopelengthofeachslopesection,anddesignsverticalcurve;inthepartofcross-sectionaldesign,thedesignconsidershighwaygrade,drivingreq
6、uirements,naturalgeologicalcondition,theconstructionmethod,andlocalfarmlandconstructioninordertoguaranteethestabilityofroadbedanddrainage.Intheroadbeddesignpartweshouldselectreasonableembankmentpackingandcompactedstandards;inthepartofretainingwalldes
7、ign,thedesignerusesagravityretainingwallandslopingbaseandtheeconomyandsafetyofretainingwallaretakeninaccount;inthedesignofhighwaydrainageandprotectiveengineering,inviewofthefactorsoflocalgeologycondition,landscaping,landscapeimprovementandrelievingof
8、visualfatigueofdrivers,thedesignusesgrasssodaswellasfacingwallofwindow-typetoprotectpartofthesideslope;inthepartofpavementstructuredesign,accordingtothedesignrequirementsandlocalconditions,thedesignselectsbituminousconcretepavement.Keywords:first-cla
