【正文】 .................................................................. 17 ................................................................................................................ 17 CFG樁振動(dòng)沉管灌注施工。 ............................................................................ 17 不得造成樁頂設(shè)計(jì)標(biāo)高以下的樁體斷裂和擾動(dòng)樁間土。法確定圓心輔助線 ..................................................................................... 31 滑動(dòng)面計(jì)算點(diǎn)的確定 .................................................................................................... 32 穩(wěn)定系數(shù)計(jì)算 ................................................................................................................ 32 參數(shù)的選取 ......................................................................................................... 32 穩(wěn)定系數(shù)計(jì)算 ................................................................................................. 32 第 6章 CFG 樁復(fù)合地基工后沉降計(jì)算 .................................................................................... 34 CFG樁復(fù)合地基工后沉降計(jì)算 ...................................................................................... 34 路基工后沉降 ................................................................................................................ 36 工后沉降產(chǎn)生的原因 ......................................................................................... 36 減少工后沉降的措施 ......................................................................................... 37 第 7 章 路基基床表 層加固及坡面防護(hù)設(shè)計(jì) ............................................................................. 38 路基基床表層加固 ........................................................................................................ 38 ................................................................................................................ 38 基床表層的作用 ................................................................................................. 38 基床表層厚度 ....................................................................................................... 38 基床表層填料 ..................................................................................................... 39 基床表層加固措施 ............................................................................................. 40 路堤坡面防護(hù) ................................................................................................................ 40 路堤坡面防護(hù)常見形式： ................................................................................. 41 沖刷防護(hù) ............................................................................................................. 42 第 8 章 路堤施工方案 ................................................................................................................. 45 路堤填料改良土施工方案 ............................................................................................ 45 。 關(guān)鍵詞：客運(yùn)專線 軟基處理 穩(wěn)定性分析 沉降計(jì)算 變形 Abstract This design for the soft soil foundation. Firstly, the paper analyzes the concept of soft soil, reasons, engineering properties. Secondly, according to the existing material parameters design embankment, choosing the most unstable transverse stability analysis of the cross. Again, according to the engineering properties of soft soil foundation with sand bags, and CFG pile soft soil foundation treatment for the treatment of these two kinds of design scheme for technical and economic parison, choose CFG pile soft soil foundation. Then, using the method of subgrade delamination summationmethod and stability, and separately calculated, and reduce subsidence of postconstruction settlement measures. Then, the bed surface of roadbed reinforcement and slope protection design, and finally puts forward solutions and deformation monitoring road embankment. Through the analysis and conclusions design and construction method is more reasonable. Keywords: passenger special line of soft foundation stability analysis of subsidence deformation monitori 石家莊鐵道大學(xué)畢業(yè)設(shè)計(jì) 第 1章 緒論 軟土的定義﹑類型﹑成因及工程性質(zhì) 軟土的定義 軟土又稱淤泥類土或有機(jī)類土，一般是指主要由細(xì)粒土組成的孔隙比大（ e≥）天然含水量大于或等于液限﹑壓縮性高（壓縮系數(shù) α灰藍(lán)﹑灰綠和灰黑的黏性土。是一種結(jié)構(gòu)疏松軟弱，顏色呈灰、 軟土的類型 表 11 我國(guó)軟土類型 類 型 厚度（ m） 60~200 5~60 2~60 5~25 特征 面積廣，厚度大，常有夾砂層，極疏松，透水性較強(qiáng)易于壓縮固結(jié) 分選性差，結(jié)構(gòu)不穩(wěn)定，粉砂薄層多，又叫錯(cuò)層理，不規(guī)則尖滅層及透鏡體 顆粒極細(xì)，孔隙比大，強(qiáng)度低，