復(fù)合地基基礎(chǔ)沉降計(jì)算

復(fù)合地基基礎(chǔ)沉降計(jì)算,,,,,,,,,,,,,,,,

,適用規(guī)范：GB50007-2011/JGJ79-2012,,,,,2024/12/79:44,,,,,,,,,,

一、基本信息：,,,,,,,,,,,,,,,,

,復(fù)合地基承載力特征值：（kPa）,,,,,120,,,,,,,,,,

,基礎(chǔ)底面下天然地基承載力特征值：（kPa）,,,,,65,,,,,,,,,,

,地基處理樁頂標(biāo)高：（m）,,,,,4.29,,,,,,,,,,

,地基處理樁長(zhǎng)：（m）,,,,,13.6,,,,,,,,,,

,地基處理樁底標(biāo)高：（m）,,,,,-9.31,,,,,,此處標(biāo)高及以后標(biāo)高均采用同種標(biāo)高（絕對(duì)標(biāo)高或相對(duì)標(biāo)高）,,,,

,基礎(chǔ)寬b：,,2.4,基礎(chǔ)長(zhǎng)l：,,2.4,,,,,,l/b:,,1,,

,基礎(chǔ)埋置深度：,,,,,2.5,,,,,,基礎(chǔ)底面上土容重：,,20,,

,基礎(chǔ)軸力準(zhǔn)永久值：kN,,,,,470,,,,,,,,,,

,地下水位標(biāo)高：,,,,,5.14,,,,,,土干重度：,,18,飽和重度：,20

,基礎(chǔ)底應(yīng)力:kPa,,131.597,基底附加應(yīng)力：,,93.40,,,,,,,,,,

二、復(fù)合地基相關(guān)參數(shù)計(jì)算：,,,,,,,,,,,,,,,,

,1、壓縮模量調(diào)整值：,,,,,,,,,,,,,,,

,地基壓縮模量調(diào)整值：,,,,,1.846153846,,,,,,,,,,

,,,,,,,,,,,,,,,,,

,2、土層信息：,,,,,,,,,,,,,,,

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,,土層名稱(chēng),土層厚度,土層底標(biāo)高,土層壓縮模量（Mpa）,壓縮模量調(diào)整后值,z,z/(b/2)（用于計(jì)算附加應(yīng)力,附加應(yīng)力系數(shù),,,應(yīng)力系數(shù)X4,差值計(jì)算,,,

,,①2素填土,1.92,2.37,2.3,4.246,1.92,1.600,0.2149,,,0.8596,12,8.5,12.8,

,,②淤泥,2.5,-0.13,2.5,4.615,4.42,3.683,0.1446,,,0.5784,0.0435,0.054875,0.0409,

,,③1淤泥及淤泥質(zhì)黏土,5.7,-5.83,2.2,4.062,10.12,8.433,0.077,,,0.308,,,,

,,③2黏土及粉質(zhì)黏土,3.48,-9.31,3.3,6.092,13.6,11.333,0.059,,,0.236,,,此層為加強(qiáng)層底，標(biāo)高為地基處理樁底標(biāo)高,

,,③2黏土及粉質(zhì)黏土,5.92,-15.23,3.3,3.3,19.52,16.267,0.0549,,,0.2196,,,,

,,,,,,,,,,,,,,,,,

,3、復(fù)合地基沉降計(jì)算經(jīng)驗(yàn)系數(shù)：,,,,,,,,,,,,,,,

,,,,,1.650,0.389,,,,,,,,,,

,,,,,0.906,0.196,,,,,,,,,,

,,,,,0.560,0.138,,,,,,,,,,

,,,,,0.093,0.015,,,,,,,,,,

,,,,,1.077,0.326,,,,,,,,,,

,,,,,,,,,,,,,,,,,

,,=,3.210,=,1.077,=,0.738,=,0.326,,,,,,,

,,=,4.027,,,,,,,,,差值計(jì)算,,,,

,,,,,,,,,,,,4,4.027,7,,

,,所以查表得經(jīng)驗(yàn)系數(shù)為：,,0.997,見(jiàn)地基處理規(guī)范P44,,,,,,,1,0.997337466,0.7,,

三、基礎(chǔ)沉降計(jì)算：,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,

,,①2素填土,,36.302,,,,,,,,,,,,

,,②淤泥,,18.336,=,68.946,mm,,,,,,,,,

,,③1淤泥及淤泥質(zhì)黏土,,12.887,,,,,,,,,,,,

,,③2黏土及粉質(zhì)黏土,,1.420,s=,68.76