【正文】 n is the Pavement and Subgrade Design of GuangNan Expressway from K3+600 to K4+600. The design of highway traffic speeds above 80km / h, twoway fourlane, the width of the roadbed is . Traffic volume is expected to average annual growth rate of 13%, the subgrade filling is clay, the filling’s average height is 8m, in the high fill sections of distribution of soft clay mud. This design includes four main parts of pavement design, materials design, retaining wall design and the design of soft ground treatment. First of all, the section of the road for pavement design, it is includes the design of asphalt pavement and cement concrete pavement design. Asphalt pavement design in which there are three structures, respectively named the flexible asphalt pavement, semirigid asphalt pavement, asphalt pavement bined. Cement concrete pavement also have three kinds of structures, respectively named ordinary concrete pavement, concrete pavement posite, continuously reinforced concrete pavement. Then the parison between the three road structures was done based on the technical and economic, and the best one was remended. Followed by the road design in accordance with the materials used in the design, as well as simple of the construction shows, this part of the design including the asphalt mixture design, the design of cement concrete pavement, grassroots design of cushion material. Asphalt mixture design which includes the design of mineral aggregate gradation and asphalt content of the best design, the other two parts of the mix design. Then according to the roadbed plan and vertical section roadbed to design the roadbed maps rosssectional design, it is including drainage design and embankment slope design and calculate the earth embankment table. For the high fill subgrade to design of the retaining walls, in this section of retaining walls used by reinforced earth retaining wall, for the retaining wall construction it has a simple description. Finally, processing the soft soil subgrade which under the roadbed fill. Because of the very poor mechanical properties of soft soil layers are thick, notforfill in the economy, simply can not meet the requirements of strengthening the drainage, so use the CFG pile to deal with weak subgrade. This part of the design includes some of CFG pile, with the total settlement calculations, and method statements. The alternative schemes Both of the road design and the design of soft soil roadbed have the alternative schemes in this design, this article sets out the basis of the design method and design steps can be used as reference for other sections of the design. key words： Asphalt Concrete Pavement； Cement Concrete Pavement； Optimum asphalt content； Reinforced retaining wall； CFG pile 目 錄 第 1 章 緒論 ............................................................ 1 國內(nèi)外高速公路的發(fā)展概況 ........................................ 1 高速公路的概念 ............................................................................................ 1 高速公路的產(chǎn)生和發(fā)展 ................................................................................ 1 我國高速公路的發(fā)展與規(guī)劃 ........................................................................ 2 廣南高速現(xiàn)狀 .................................................... 3 本設(shè)計(jì)的基本思路與方法 .......................................... 3 第 2 章 路面設(shè)計(jì) ........................................................ 4 設(shè)計(jì)資料 ........................................................ 4 瀝青路面設(shè)計(jì) .................................................... 4 路面設(shè)計(jì)年限 ................................................................................................ 4 軸載換算 ........................................................................................................ 4 預(yù)估路基回彈模量 ........................................................................................ 7 材料選用 ........................................................................................................ 7 初擬路面結(jié)構(gòu)組合 ........................................................................................ 8 計(jì)算設(shè)計(jì)彎沉 ................................................................................................ 9 路面材料設(shè)計(jì)參數(shù) ...................................................................................... 10 路面結(jié)構(gòu)層厚度計(jì)算 .................................................................................. 11 驗(yàn)算防凍厚度和選擇最優(yōu)結(jié)構(gòu)組合 .......................................................... 13 水泥路面設(shè)計(jì) ................................................... 14 交通分 析 ...................................................................................................... 14 普通混凝土路面設(shè)計(jì) .................................................................................. 17 復(fù)合式混凝土路面 ...................................................................................... 23 連續(xù)配筋混凝土路面設(shè)計(jì) .......................................................................... 27 混凝土路面方案比選 .................................................................................. 31 第 3 章 材料設(shè)計(jì) ....................................................... 33 瀝青混合料設(shè)計(jì) ................................................. 33 礦料級配設(shè)計(jì) .............................................................................................. 33 確定最佳瀝青用量 ...................................................................................... 41 設(shè)計(jì)混合料路用性能檢驗(yàn) .......................................................................... 50 目標(biāo)配合比設(shè)計(jì)成果匯總 .......................................................................... 50 路面水泥混凝土設(shè)計(jì) ............................................. 50 路面混凝土的原材料技術(shù)要求 .................................................................. 50 混凝土配合比設(shè)計(jì) ...................................................................................... 51