【正文】 reasonable program the second program are remended through paring the two program according to the technical economic indicator. The second part is the roadbed engineering design, which includ retaining engineering design and so on. Part three is pavement design, and the concrete pavement and asphalt cement concrete pavement both are considered and designed petely in the design, asphalt concrete pavement is remended for the program, the whole drainage system is formed as side ditches, drainage ditch and pipe culvert. Related to the drawings, forms attached. Key words ： Route plane linear design； Vertical section design； Crosssection design； gravity retaining walls； Pavement design 目 錄 緒論 ................................................................... 1 １ 畢業(yè)設(shè)計(jì)任務(wù)書 ..................................................... 3 設(shè)計(jì)基本資料 ................................................... 3 III 道路的性質(zhì)與任務(wù) ......................................... 3 道路等級 ................................................. 3 沿線自然地理特征 ......................................... 3 設(shè)計(jì)的主要內(nèi)容及技術(shù)指標(biāo) ....................................... 4 道路類型、等級的確定 ..................................... 4 道路技術(shù)標(biāo)準(zhǔn)論證 ......................................... 5 豎曲線標(biāo)準(zhǔn)論證 ................................................. 6 坡長 ..................................................... 6 縱坡 ..................................................... 6 豎曲線半徑及長度 ......................................... 6 視距長度 ................................................. 7 橫斷面的技術(shù)標(biāo)準(zhǔn)論證 ........................................... 7 行車道數(shù)目及其寬度 ....................................... 7 路基路面的寬度 ........................................... 7 路拱橫坡和路肩橫坡度 ..................................... 7 凈空高度論證 ............................................. 8 車輛荷載論證 ............................................. 8 2 紙上定線和平縱設(shè)計(jì) ................................................. 10 紙上定線 ...................................................... 10 平面線形設(shè)計(jì) .................................................. 10 方案一 .................................................. 11 方案二 .................................................. 15 坐標(biāo)計(jì)算 ................................................ 16 路線縱斷面設(shè)計(jì) ................................................ 18 縱斷面設(shè)計(jì)步驟 .......................................... 18 設(shè)計(jì)計(jì)算公式 ............................................ 19 方案一 .................................................. 19 方案二 .................................................. 23 平縱組合設(shè)計(jì) .................................................. 24 方案比選 ...................................................... 24 主要綜合考慮因素 ........................................ 24 各方案主要指標(biāo) .......................................... 25 方案比選意見 ............................................ 25 3 橫斷面設(shè)計(jì)及路基土石方計(jì)算 ......................................... 27 橫斷 面設(shè)計(jì) .................................................... 27 路基橫斷面 .............................................. 27 超高及加寬 .............................................. 27 路基土石方計(jì)算 ................................................ 28 橫斷面面積的計(jì)算 ........................................ 29 土石方數(shù)量的計(jì)算 ........................................ 29 4 支擋工程設(shè)計(jì) ....................................................... 32 重力式擋土墻的設(shè)計(jì)： .......................................... 32 斷面尺寸 ...................................................... 33 墻頂以上填土土壓力的計(jì)算 ...................................... 33 IV 破裂角 .................................................. 33 土壓力 .................................................. 34 4． 4 墻身斷面強(qiáng)度驗(yàn)算 ............................................. 34 土壓力及彎矩計(jì) 算 ........................................ 34 墻身自重、墻頂填土重及彎矩計(jì)算 .......................... 37 截面應(yīng)力計(jì)算 ............................................ 37 4． 5 基礎(chǔ)底面強(qiáng)度及穩(wěn)定驗(yàn)算 ....................................... 37 土壓力及彎矩計(jì)算 ........................................ 37 墻身填料，墻身、基礎(chǔ)自重及彎矩 .......................... 40 基底應(yīng)力驗(yàn)算 ............................................ 40 基底穩(wěn)定性驗(yàn)算 .......................................... 41 5 路面工程設(shè)計(jì) ....................................................... 42 5． 1 瀝青混凝土路面設(shè)計(jì)（方案一） ................................. 42 軸載分析 ................................................ 42 當(dāng)驗(yàn)算半剛性基層層底拉應(yīng)力時(shí) ............................ 43 結(jié)構(gòu)組合和材料選取 ...................................... 43 各層材料的抗壓模量與劈裂強(qiáng)度 ............................ 43 土基回彈模量的確定 ...................................... 44 設(shè)計(jì)指標(biāo)的確定 .......................................... 44 設(shè)計(jì)資料總結(jié) ............................................ 44 確定石灰土層厚度 ........................................ 45 水泥混凝土路面設(shè)計(jì) ............................................ 47 將各級軸載換算為標(biāo)準(zhǔn)軸載 ................................ 47 交通分析 ................................................ 48 初擬路面結(jié)構(gòu) ............................................ 48 路面材料參 數(shù)確定 ........................................ 49 普通混凝土面層的相對剛度半徑 ............................ 49 荷載疲勞應(yīng)力 ............................................ 49 溫度疲勞應(yīng)力 ............................................ 50 路面方案比選 .................................................. 50 6 路面排水設(shè)計(jì) ....................................................... 51 路肩排水 ...................................................... 51 中央分隔帶排水 ................................................ 51 路面內(nèi)部排水 .................................................. 52 7 路基防護(hù)與加固 ..................................................... 53 坡面防護(hù) ...................................................... 53 植物防護(hù) ................................................ 53 工程防護(hù) ..............................