美好環(huán)境源自卓越品質(zhì)美好環(huán)境源自卓越品質(zhì)InnovativeSolutionsforaBetterEnvironmentxx項(xiàng)目污水處理裝置生活、生產(chǎn)污水（廢水）收集池格柵渠（460AB）基坑邊坡穩(wěn)定性驗(yàn)算書(shū)（放坡開(kāi)挖施工）編制：審核：日期：二〇一二年九月十九日目錄TOC\o"1-2"\h\z\u251461．基坑簡(jiǎn)介 1224961.1基坑概況 146341.2場(chǎng)地土質(zhì)情況 188552．計(jì)算依據(jù) 1167843．力學(xué)驗(yàn)算法的基本假定 124374．判定標(biāo)準(zhǔn) 2165005．驗(yàn)算過(guò)程（泰勒?qǐng)D表法） 2140615.1公式及字母意義 2272975.2驗(yàn)算理論及方法 239275.3驗(yàn)算計(jì)算過(guò)程（H=7.8m） 346565.4驗(yàn)算計(jì)算過(guò)程（H=3.2m） 4259546．結(jié)論 4滑動(dòng)面通過(guò)直角時(shí)表解法的AB值邊坡系數(shù)O1O2O3O4O5ABABABABAB1:1.252.646.052.166.351.827.031.668.021.489.651:12.345.791.8761.576.571.47.51.248.81:0.91.9924.7361.6124.941.3565.441.2246.2081.0887.381:0.851.884.471.524.671.285.141.1565.8631.0286.971:0.751.663.94671.34334.11671.134.53331.025.17330.90676.151:0.51.14292.78190.91812.89050.773.17240.69143.6210.61334.27表中數(shù)據(jù)按外插法計(jì)算求得。5.3驗(yàn)算計(jì)算過(guò)程（H=7.8m）粘聚力c=18kpa平均值內(nèi)摩擦角φ=21.3o平均值容重γ=16.13KN/m3平均值土層內(nèi)的抗剪強(qiáng)度參數(shù)建議值為：凝聚力C：18Kpa，內(nèi)摩擦角Φ：21o。容重γ=15.4KN/m3。f=tanφ=tan21o=0.38386c=18Kpar=15.4KN/m3K=fA+B當(dāng)邊坡系數(shù)取1:0.9時(shí)，K值計(jì)算如下：Ko1=fA+B=0.38386*1.992+18/15.4/7.8*4.736=1.474Ko2=fA+B=0.38386*1.612+18/15.4/7.8*4.94=1.359Ko3=fA+B=0.38386*1.356+18/15.4/7.8*5.44=1.336Ko4=fA+B=0.38386*1.224+18/15.4/7.8*6.208=1.4Ko5=fA+B=0.38386*1.088+18/15.4/7.8*7.38=1.524K=ΣKoi/n=(1.474+1.359+1.336+1.4+1.524)/5=1.419＞1.25符合要求。5.4驗(yàn)算計(jì)算過(guò)程（H=3.2m）粘聚力c=18kpa平均值內(nèi)摩擦角φ=23o平均值容重γ=15.4KN/m3平均值土層內(nèi)的抗剪強(qiáng)度參數(shù)建議值為：凝聚力C：18Kpa，內(nèi)摩擦角Φ：23o。容重γ=15.4KN/m3。f=tanφ=tan23o=0.42447c=18Kpar=15.4KN/m3K=fA+B當(dāng)邊坡系數(shù)取1:0.5時(shí)，K值計(jì)算如下：Ko1=fA+B=0.42447*1.142+18/15.4/3.2*2.7819=1.501Ko2=fA+B=0.42447*0.9181+18/15.4/3.2*2.8905=1.445Ko3=fA+B=0.42447*0.77+18/15.4/3.2*3.1724=1.486Ko4=fA+B=0.42447*0.6914+18/15.4/3.2*3.621=1.616Ko5=fA+B=0.42447*0.6133+18/15.4/3.2*4.27=1.82K=ΣKoi/n=(1.501+1.445+1.486+1.616+1.82)/5=1.574＞1.25符合要求。結(jié)論基坑開(kāi)挖采取上部3.2m放坡比1:0.5，