【正文】 I 道橋畢業(yè)設(shè)計(jì) 摘 要 本次設(shè)計(jì)主要是泉州二級(jí)公路 B 段線路進(jìn)行設(shè)計(jì)，設(shè)計(jì)的內(nèi)容主要包括選線、平面設(shè)計(jì)、縱斷面設(shè)計(jì)、橫斷面設(shè)計(jì)、超高設(shè)計(jì)、擋土墻設(shè)計(jì)、瀝青混凝土路面設(shè)計(jì)。 為了經(jīng)濟(jì)適用，本次設(shè)計(jì)路基寬度為 14m，土路肩 ，為了保障排水，路面路拱度 2%，土路肩為 3%。路堤處設(shè)邊坡，比例 1:，路塹處設(shè)邊溝，邊溝坡度 1:1，高度和深度均為 ，在深挖的路段另設(shè)截水溝截水溝，截水溝坡比、高度和深度同邊溝一致。路面采用瀝青混凝土路面， 又由于該路路面等級(jí)高，所承受交通量較重，因此采用三層式結(jié)構(gòu)，即表面層 采用 4cm厚的細(xì)粒式密集配瀝青混泥土，中面層采用 5cm厚中粒式密集配瀝青混泥土，下層面采用 6cm厚粗粒式密集配混泥土。 本次設(shè)計(jì)全部按照相應(yīng)規(guī)范編寫，平面圖為手繪圖，其余圖均為電腦出圖。 關(guān)鍵詞 泉州二級(jí)公路 選線 瀝青混泥土 II Abstract This design is mainly quanzhou secondary roads B section routes for the design, the design of content mainly includes route, graphic design, alignment design, crosssectional design, ultrahigh design, retaining wall design, asphalt concrete pavement design. In order to economy applicable, the design of roadbed width to 14m, dirt road shoulder m, in order to ensure drainage, paving road arch degrees 2%, dirt road shoulder for 3%. Embankment slope, proportion in a 11. 5, cutting place set ditches, ditches slope 1:1, height and depth are m, in deep dig sections another set cut ditch cut ditch, cut ditch slope, height and depth than with ditches and consistent. Pavement using of asphalt concrete pavement, and because high, we inherit road level, so the method heavier traffic in three layers, namely, type structure using intersecting 4cm thick finegrained type of asphalt mixes clay, dense worthy of using 5cm thick layer of grain of type of asphalt mixes clay, dense match by next level 6cm thick coarse grained type dense matchs mixes clay. Skey word Quanzhou secondary roads route selection Asphalt mixes clay III 目 錄 摘 要 ......................................................................................................................... I Abstract ....................................................................................................................... II 第 1 章 緒論 ............................................................................................................... 1 總體設(shè)計(jì)的基本任務(wù) .................................................................................... 1 沿線自然條件 ................................................................................................ 2 道路建設(shè)的意義 ............................................................................................ 2 第 2 章 公路等級(jí) ....................................................................................................... 3 交通分析 ........................................................................................................ 3 主要技術(shù)指標(biāo) ................................................................................................ 4 第 3 章 道路選線及平面設(shè)計(jì) ................................................................................... 6 選線的原則與步驟 ........................................................................................ 6 選線的原則 .......................................................................................... 6 選線的步驟 .......................................................................................... 7 平面線形設(shè)計(jì) ................................................................................................ 8 直線段 .................................................................................................. 8 曲線段 .................................................................................................. 8 方案比選 ...................................................................................................... 14 第 4 章 縱斷面設(shè)計(jì) ................................................................................................. 16 縱坡設(shè)計(jì) ...................................................................................................... 16 設(shè)計(jì)要求 ............................................................................................ 16 設(shè)計(jì)的步驟 ........................................................................................ 17 豎曲線設(shè)計(jì) .................................................................................................. 18 第 5 章 路基設(shè)計(jì) ..................................................................................................... 22 橫斷面設(shè)計(jì) .................................................................................................. 22 超高設(shè)計(jì) ...................................................................................................... 22 超高設(shè)計(jì)步驟 ................................................................................... 22 土石方計(jì)算與調(diào)配 ...................................................................................... 26 土石方計(jì)算 ........................................................................................ 26 調(diào)配原則 ............................................................................................ 27 調(diào)配方法 ........................................................................................... 27 IV 第 6 章 排水設(shè)計(jì) ..................................................................................................... 29 第 7 章 擋土墻的設(shè)計(jì) ............................................................................................. 33 擋土墻的布置及構(gòu)造 .................................................................................. 33 擋土墻的土壓力計(jì)算 .................................................................................. 34 庫(kù)倫主動(dòng)土壓力計(jì)算 ........................................................................ 34 擋土墻穩(wěn)定性驗(yàn)算 ............................................................................ 37 增加擋土墻穩(wěn)定性的措施 ................................................................ 38 擋土墻的排水設(shè)施 ............................................................................ 38 第 8 章 邊坡防護(hù) ..................................................................................................... 40 第 9 章 路面結(jié)構(gòu)設(shè)計(jì) ...........................................................................