【正文】 ......................1 ABSTRACT ...............................................................................................................................2 目 錄 ...................................................................................................................................1 論 ...............................................................................................................................1 選 題背景 1 道路運(yùn)輸概述 .....................................................................................................1 我國(guó)道路發(fā)展情況 .............................................................................................1 本設(shè)計(jì)基本情況 ........................................................................................................2 ...................................................................................................................2 二級(jí)公路選線原則 ...................................................................................................2 選線 ............................................................................................................................3 定線 ............................................................................................................................4 路線簡(jiǎn)介 .............................................................................................................4 帶緩和曲線的圓曲線計(jì)算 .................................................................................4 曲 線上整 20 米樁號(hào)的坐標(biāo)計(jì)算 .......................................................................6 ...............................................................................................................7 概述 ............................................................................................................................7 縱斷面設(shè)計(jì)的原則： ................................................................................................8 縱坡設(shè)計(jì) ....................................................................................................................8 縱坡設(shè)計(jì)的一般要求： .....................................................................................8 縱坡坡度 .............................................................................................................8 平縱組合設(shè)計(jì) .....................................................................................................9 豎曲線設(shè)計(jì) .............................................................................................................. 10 豎曲線設(shè)計(jì)的一般要求 ................................................................................... 11 豎曲線半徑 ....................................................................................................... 11 豎曲線計(jì)算 ....................................................................................................... 11 ............................................................................................................. 14 概述 .......................................................................................................................... 14 橫斷面布置 ....................................................................................................... 14 橫斷面設(shè)計(jì)原則 ： ............................................................................................ 14 路基橫斷面的主要形式 ： ................................................................................ 15 各項(xiàng)技術(shù)指標(biāo) .......................................................................................................... 15 路基寬度 ........................................................................................................... 15 路拱及路肩坡度 ............................................................................................... 15 邊坡坡度 ........................................................................................................... 16 邊溝設(shè)計(jì) ........................................................................................................... 16 超高與加寬 .............................................................................................................. 17 ................................................................................................................... 17 超高橫坡的確定 ............................................................................................... 18 超高緩和段 ....................................................................................................... 19 超高值計(jì)算公式 ...................................................................................................... 20 曲線段超高與加寬的過渡 ......................................... 22 XXX：某二級(jí)公路路線設(shè)計(jì) 2 路基邊線高程計(jì)算 .........