摘要
本次毕业设计聚焦于三级公路（A）标段，该标段所经区域地势以重丘为主，地势自东北向西南微倾，中部更是山岭地带。本次设计的核心任务涉及公路线形、路基以及路面的设计。在线形设计方面，涵盖了选线、方案比选、平面设计和纵断面设计等环节；在路基设计方面，则包含了横断面设计、路基边坡设计等关键要素；而路面设计则聚焦于路面结构层设计、其厚度设计以及相应的验算工作。通过对当地交通量、地形、气候、水文及地质等实际情况的深入调研，我们明确了道路的等级，并确立了各项技术指标，为后续的公路路线方案比选提供了基础数据和线路平面位置的确定。此外，本设计还进一步细化了方案，对路线的平面和纵断面进行了综合考量，基于技术标准及当地的实际情况，确定了路基的宽度、高度以及边坡坡度，并对路面材料、横断面布置、曲线超高及加宽等设置进行了精细设计。
关键词：线形；缓和曲线；竖曲线；路基；路面
Abstract
This graduation design focuses on the Class III Highway(Section A)from Jiamusi to Mudanjiang,where the terrain is predominantly mountainous with a slight tilt from northeast to southwest,and the central part is mountainous.The core tasks of this design involve the design of highway alignment,subgrade,and pavement.In terms of alignment design,it covers route selection,scheme comparison,horizontal design,and vertical profile design.Subgrade design includes cross-section design and subgrade slope design.Pavement design focuses on the design of pavement structure layers,their thickness,and corresponding calculations.Through in-depth investigations of local traffic volume,topography,climate,hydrology,geology,and other conditions,we have determined the road grade and various technical indicators for road design,providing basic data for the comparison and selection of highway route schemes and determining the plane position of the route.In addition,this design further refines the scheme,conducts a comprehensive analysis of the plane and vertical profile of the route,determines the width,height,and slope gradient of the subgrade based on technical standards and local conditions,and carefully designs the pavement materials,cross-section layout,curve superelevation,and widening settings.
Keywords:Alignment;Transition Curve;Vertical Curve;Subgrade;Pavement
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