PAGE-77-盘山高速公路路基路面综合设计摘□要：本设计是盘县至山城县高速公路K15+140～K17+750段路基路面综合设计，该高速公路段设计行车速度80km/h，双向四车道，路基宽度为21.5m，预计交通量年平均增长率6%。本设计内容主要包括路面设计、路基设计、防护与支挡工程设计和桥涵设计等八个部分。设计时首先对该段道路进行路面设计，设计包括沥青路面设计和水泥混凝土路面设计。其中沥青路面设计采用2种结构组合，水泥混凝土路面采用3种结构组合，分别对每种路面方案进行性能技术经济比较后推荐一种路面。再根据路线平面图进行纵断面图和路基横断面设计，主要包括排水设计和路堤路堑边坡设计，计算出路基土石方数量并进行了调配。针对高填方路段本设计进行了挡土墙设计，本路段挡土墙采用衡重式挡土墙。最后对桥涵进行了初步设计。共设计了3座连续T梁桥、3个圆管涵和3个盖板涵。本设计各个设计阶段均进行了方案比选，并阐明了设计的方法依据和设计步骤，对其它路段的设计可提供一定的参考。关键词：沥青混凝土路面；水泥混凝土路面；衡重式挡土墙ThesubgradeandpavementcomprehensivedesignofPanxian-ShanchengExpresswayAbstract：ThisdesignisthesubgradeandpavementdesignofPanxiantoShanchengExpresswayfromK15+140toK17+750.Thedesignedspeedis80km/h,two-wayfour-lane,thewidthoftheroadbedis21.5m.Trafficvolumeisexpectedtobeaverageannualgrowthrateof6%.Thisdesignincludeseightmainpartsofpavementdesign,roadbeddesign,protectionandretainingengineeringanddesignofbridgeandculvert.Firstly,thesectionoftheroadforpavementdesign,itincludesthedesignofasphaltpavementandcementconcretepavementdesign.Thedesignofasphaltpavementhasthreekindsofstructurecombination,cementconcretealsohastwokindsofstructurecombination.Onvariousroadperformancecomparisonoftechnologyandeconomyoftherecommendationofapavement.Secondlyaccordingtoroadbedplanandlongitudinalsectionofroadbedtransectionanddesign,includingthedesignofroadanddrainagedesignEmbankmentslopedesign,calculatingtheembankmentofearthdataanddeployment.Forhighfillroadbedforthedesignofretainingwalls,theroadretainingwallusebalanceweightretainingwallforretainingwallconstruction.Finally,thebridgeandculvertsonthepreliminarydesign.DesignedatotalofthreeTcontinuousbeambridgeandthreecircularpipeculvert,threecoverplateculvert.Thisdesignineachdesignstageareschemeselecting,thispaperpresentsthedesignmethodoffoundationanddesignsteps,andcanprovidesomereferencetoothersectionsofthedesign.Keywords：asphaltconcretepavement;cementconcretepavement;balanceweightretainingwall1□设计总说明1.1□地理位置图盘山高速公路起于盘县红果海铺，与沪昆国家高速公路相接，经白鸡坡、都格火车站、发耳、营街，在望龙包跨过北盘江，经茅草坪、营盘、兰花箐、雨格、松河