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1、江西省吉安市永新至永丰A段公路设计摘要本设计是江西省吉安市永新至永丰A段公路设计,根据任务书的要求,主要依据交通量,再结合道路的性质、任务及在路网中的地位等确定公路等级为二级,设计时速为60km/h。在此前提下,根据公路等级确定主要技术标准后进行路线平面设计,同时通过比选确定最佳路线方案;在充分考虑满足使用要求、节省造价、平纵组合的基础上进行纵断面设计;选择1.5公里进行横断面设计,同时兼顾超高、加宽设计,由此编制路基设计表,完成土石方调配;土石方分项工程预算、计算并确定路面结构;确定沿线排水、防护工程的位置、结构类型及尺寸;设置交通安全设施。整个设计过
2、程中,始终遵循合理确定技术指标、充分利用周围资源条件以及注重环保的理念。关键词:二级公路;路线;路基;路面;排水;预算TheASectionofHighwayDesignFromYongxinToYongfeng,Ji'anCity,JiangxiProvinceAbstractItisaboutYongxintoYongfengAsectionofhighwaydesignofJi'anCity,JiangxiProvince.Accordingtotherequirementsofthetaskbook,mainlybasedonthetraffic
3、flow,andcombinedwiththenatureoftheroad,thetaskandthestatusoftheroadinthewholeroad-net.Roadgradewasdefinedtobethesecondaryroads,andspeedonthishighwayislimitedin60km/h.Onthispremise,theplanedesignwillbecarriedonwhenthemajortechnicalstandardsarefinishedaccordingtotheidentificationof
4、therankofhighway,whilethebestroutetogothroughtheprogramisbasedontheschemecomparison;thelongitudinaldesignisbaseontakingfullaccountofthefillingandexcavatingbalance,thecombinationofHorizontalandVertical;select1.5kmcross-sectionaltodesign,takingintoaccountthehighwideningandsuperelev
5、ationdesign,whichispreparedforthesubgradedesigntable,thencompletetheearth-rockallocationandearth-rocksubentryengineeringbudget.DrawthePavementStructureaccordingtothetrafficlevelsandtheavailabilityofthelocalmaterials.Todeterminethelocationofthedrainageprotectionworks,structuretype
6、andsizeandsetoftrafficsafetyfacilities.Finally,wemakeabudgetaboutthisseparationproject.Strivetodesignapractical,safemountainroadintheprocessofdesign,withareasonableidentificationoftechnicalindicators,makingfulluseofresourcesaroundandpayingattentiontotheconceptofenvironmentallycon
7、sciousdesignintheprocessofthedesign.KeyWords:.secondaryhighways,route,roadbed,pavement,drain,budget目录江西省吉安市永新至永丰A段公路设计I摘要IAbstractII第一章概述41.1任务依据及项目建设必要性41.2公路等级的确定41.2.1原始资料41.2.2计算预测年限年平均日交通量41.3沿线自然地理条件及其概况51.4设计主要内容61.5技术指标71.6技术指标的运用情况71.7设计所遵循的总体原则8第二章路线的平面设计92.1路线的布设情况92.1
8、.1平面位置确定情况92.1.2平面设计情况102.1.3路线方案的比选102.