【正文】 ecification documents needed in design, including the selection of standard。 然后提出 設計時所需要的 規(guī)范 文件，包括選線標準 ； 平面設計要求 ； 縱斷面設計要求 ； 橫斷面設計 和路基路面設計 的要求等一些規(guī)范 。 本設計是對林家溝到馬家溝村二級公路方案設計 。 graphic design requirements。 design of subgrade and pavement。 crosssectional calculation。 Protective Structure林家溝村到馬家溝村二級公路設計 III 目 錄 摘 要 ............................................................................................................................. I Abstract............................................................................................................................... II 第一部分 ............................................................................................................................ 1 一、設計說明 .................................................................................................................... 1 （一）概況 ........................................................................................................................ 1 ................................................................................. 1 （ 二）設計技術標準和任務 ............................................................................................ 1 ................................................................................................. 1 ................................................................................................................. 2 二、主要設計內容 ............................................................................................................ 3 （一）平面設計 ................................................................................................................ 3 ......................................................................................................... 3 ......................................................................................................... 3 ............................................................................................................. 3 ......................................................................................................... 3 （二）縱斷面設計 ............................................................................................................ 4 ................................................................................................. 4 ................................................................................................. 4 ..................................................................................................... 5 （三）橫斷面設計 ............................................................................................................ 5 ................................................................................................. 5 ................................................................................................................. 5 ................................................................................................. 6 （四）路面結構設計 ........................................................................................................ 6 （五）擋土墻設計 ............................................................................................................ 6 第二部分 ............................................................................................................................ 7 一、公路平面線形設計 .................................................................................................... 7 （一）公路等級的確定 .................................................................................................... 7 ............................................................................................................. 7 《標準》 ......................................................................................................... 7 ............................................................................................................. 8 林家溝村到馬家溝村二級公路設計 IV ......................................................................................................... 8 （二）路線曲線要素計算 ................................................................................................ 8 （三）各點樁號的確定 .................................................................................................. 11 二、縱斷面的計算 .......................................................................................................... 12 （一）縱斷面的主要指標 .............................................................................................. 12 ............................................................................................................... 12 ............................................................................................................... 12 ....................................................................................................... 12 ................................................................................................... 12 ....................................................................................................... 13 ............................................................................................... 13 （二）豎曲線要素及其設計樁號和設計高程的計算 .................................................. 14 曲線邊坡點一 ................................................................................................... 14 ................................................................................................... 15 （三）各點樁號的確定 .................................................................................................. 15 三、橫斷面的計算 .......................................................................................................... 16 （一）超高加寬計算 ...................................................................................................... 16 ..........................................................................................