樁基承載力、天然地基承載力、沉降變形計(jì)算

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天然地基基礎(chǔ)承載力、沉降變形計(jì)算《建筑地基基礎(chǔ)設(shè)計(jì)規(guī)范》GB50007-2011第【5.2.4、5.3.5】條,,,,,,,,,,,,,,,保護(hù)密碼：qwe,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

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一,建筑場(chǎng)地土層、基礎(chǔ)參數(shù)，地基承載力驗(yàn)算,,,,,,,,,,,,,,,二,基礎(chǔ)沉降計(jì)算,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

1：,場(chǎng)地信息：,,場(chǎng)地天然地面(絕對(duì)標(biāo)高m)：,,,4.50,室內(nèi)±0.000相對(duì)(絕對(duì)標(biāo)高m)：,,,5.15,場(chǎng)地地下水位面(絕對(duì)標(biāo)高m)：,,,2.50,,1：,沉降計(jì)算點(diǎn)位：,,基礎(chǔ)形心中點(diǎn)沉降,,,,,,,,,,,,,,附一：表格選項(xiàng)窗口,,,,,,,,"GB50007-2011表5.2.7地基壓力擴(kuò)散角""",,,,,,查表,,,,,,

2：,荷載信息：,,上部結(jié)構(gòu)準(zhǔn)永久組合軸力(kN)：,,,280000.0,(kN),<=計(jì)算大型筏基沉降時(shí)，軸力應(yīng)扣除地下室的土層補(bǔ)償重量。調(diào)整時(shí)控制P0值。,,,,,,,,,應(yīng)先計(jì)算基礎(chǔ)中心點(diǎn)沉降，確定沉降變形計(jì)算深度，再查看其它點(diǎn)位沉降變形。,,,,,,,,,,,,,,,,基礎(chǔ)形心中點(diǎn)沉降,,,,,,,,Es1/Es2,,z/b,,,,z/b,Es1/Es2,,,,,

3：,基礎(chǔ)信息：,,基礎(chǔ)承臺(tái)長(zhǎng)Lc(m)：,,130.00,基礎(chǔ)承臺(tái)寬Bc(m)：,,50.00,基礎(chǔ)埋深(m)：,,1.20,<--,相對(duì)±0.000基礎(chǔ)埋深,,,2：,沉降變形計(jì)算深度：,,《建筑地基基礎(chǔ)設(shè)計(jì)規(guī)范》GB50007-2011第5.3.7,,,,,,,,,,,,,,基礎(chǔ)邊緣Lc中點(diǎn)沉降,,,,,,,,,,0.25,,0.5,,0.28,3.47,,,,,

,,,底位于,第1層,①1-3號(hào)土層。承臺(tái)深度(m)：=,,,0.55,地下水深度(m)：,,2.00,沉降計(jì)算深度(m)：,,26.00,,,承臺(tái)底以下沉降計(jì)算深度(m)：,,26.00,（m）,=,,0.025,≤,0.025,,,,,,,,基礎(chǔ)邊緣Bc中點(diǎn)沉降,,,,,,,,3,,6°,,23°,,8.2,9.12,θ,,,,

4：,地基承載力：,,基礎(chǔ)承載力fa：,,《建筑地基基礎(chǔ)設(shè)計(jì)規(guī)范》GB50007-2011第【5.2.4】條,,,,,,,,,,,,,,,,,,,,,,,,,,,,基礎(chǔ)四周角點(diǎn)沉降,,,,,,,,5,,10°,,25°,,12.0,,,,,,

,,,承載力寬度修正ηb：,,0.00,承載力深度修正ηd：,,1.20,基底下土重度γ：,,16.00,基底上土重度γm：,,16.00,,3：,基底壓力值Pk：,,67.1,(kPa),基底土自重應(yīng)力Pc：,,8.8,(kPa),,,,,,,,,,,,,,,,,10,,20°,,30°,,21.3,,,,,,

,,,,,=,,,,,71.0,(kPa),,,,,,基礎(chǔ)底部平均附加壓力P0=,,,58.28,(kPa),,,,,,,,,,,,αβγδεζηθλμνξπρστφχψωΨΩ≤≥～°,,,,,,,,注：1：Es1為上層土壓縮模量；Es2為下層土壓縮模量；,,,,,,,,,,,,

,,,基底壓力值Pk：,,《建筑地基基礎(chǔ)設(shè)計(jì)規(guī)范》GB50007-2011第【5.2.1、5.2.2】條,,,,,,,,,,,,基礎(chǔ)長(zhǎng)寬比：,,,2.60,,,,,,,,,,,,,,,,,,,,,2：z/b<0.25時(shí)取θ=0°，必要時(shí)，宜由試驗(yàn)確定；,,,,,,,,,,,,

,,,,,,Pk=(Fk+Gk)/A=,,67.1,(kPa),<==,合格,,,,,,計(jì)算深度以上有限范圍變形ΔZ=,,,1.00,(m),,,,,,,,,,,,表5.3.5沉降計(jì)算經(jīng)驗(yàn)系數(shù)ψs,,,,,,,,z/b>0.25時(shí)θ值不變；,,,,,,,,,,,,

5：,軟弱下臥層-地基承載力：,,軟弱下臥層驗(yàn)算：,,《建筑地基基礎(chǔ)設(shè)計(jì)規(guī)范》GB50007-2011第【5.2.7】條,,,,,,,,,,,4：,沉降計(jì)算經(jīng)驗(yàn)系數(shù)ψs：=,,,0.987,《建筑地基基礎(chǔ)設(shè)計(jì)規(guī)范》GB50007-2011第5.3.5,,,,,,,,,,,,基底附加壓力,,(kPa),,,,,,3：z/b在0.25與0.50之間可插值使用。,,,,,,,,,,,,

,,,指定下臥層：,,④,土層深度(m)：,,14.70,(m),,,,,,,,其中：,沉降計(jì)算深度范圍內(nèi)壓縮模量的當(dāng)量值：,,,,,,,,,,,,,,,,,2.5,4.0,7.0,15.0,20.0,,,,,,,,,,,,,,

,,,承載力寬度修正ηb：,,0.00,承載力深度修正ηd：,,1.00,下臥層土重度γ：,,6.90,下臥層上土重度γm：,,9.84,,,=,,,,,,,5.12,(MPa),,,,,,,,P0≥fak,,1.4,1.3,1.0,0.4,0.2,,,,,,,,,,,,,,

,,,下臥層承載力faz：,,=,,,,,199.8,(kPa),,,,,,,,,,,,,,,,,,,,,,P0≤0.75fak,,1.1,1.0,0.7,0.4,0.2,,,,,,,,,,,,,,

,,,下臥層附加壓力Pz：,,=,,,,,20.9,(kPa),,,,,,,,,,,,,,,,,,,,,,fak>P0>0.75fak,,1.20,1.10,0.80,0.40,0.20,,,,,,,,,,,,,,

,,,,,,,,,,,,Pcz=,144.7,(kPa),,5：,【基礎(chǔ)形心中點(diǎn)沉降】,,最終沉降量：【《建筑地基基礎(chǔ)設(shè)計(jì)規(guī)范》GB50007-2011第5.3.5】,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,其中：,Es1/Es2=,3.47,z/b=,0.28,,則：,θ=,9.12°,,,,=,,,,,272.7,（mm）,【注】,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,下臥層地基壓力：,,,Pz+Pcz=,,165.6,(kPa),<==,合格,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

三,土層參數(shù)表格,,23'—G26,土層參數(shù),,,土層設(shè)計(jì)參數(shù),,,,,基礎(chǔ),基礎(chǔ)沉降計(jì)算,,,,,,,,計(jì)算深度校核,,,,,,,,,,,,過(guò)程計(jì)算(一)：土、承臺(tái)的自重應(yīng)力(kPa),,,,,,,,過(guò)程(三),,,,,,,,,,,,

,《建筑地基基礎(chǔ)設(shè)計(jì)規(guī)范》GB50007-2011第【5.3.5】條,,,土層編號(hào),土層屬性,,土重度,壓縮模量,承載力特征值,深度,厚度,埋深,土層自重應(yīng)力,承臺(tái)底至壓縮層距離,土層深寬比,平均附加應(yīng)力系數(shù),用分層總和法計(jì)算基礎(chǔ)沉降,,,,計(jì)算深度之上Δz高度土層變形,,,,,,,,,,,,土層深度：,50,承臺(tái)底：,1.2,±0.00以下承臺(tái)自重,,,,承臺(tái)以下壓縮層厚,,,,,,,,,,,,

,,,,,,,γ,ESi,fak,ho,Δhi,Hi,σc,Zi,Zi/(0.5*Bc),ai,Zi*ai,Zi*ai-Zi-1*ai-1,△s'i,Σ△s'i,Zn-Δzi,(Zn-Δzi)/(0.5*Bc),aΔz,(Zn-Δzi)*aΔz,△s'n,,,,,,,,土層自重應(yīng)力(σc),,土層自重應(yīng)力Pc,,承臺(tái)底自重應(yīng)力,,,,,,,過(guò)程計(jì)算(四)查表D.0.1-2基礎(chǔ)平均附加應(yīng)力系數(shù),,,,,計(jì)算深度之上Δz高度基礎(chǔ)平均附加應(yīng)力系數(shù),,,,

,,,,,,,（kN/m3),(MPa),(kPa),(m),(m),(m),(kPa),(m),,,,,（mm）,（mm）,(m),,,,（mm）,,,,,,,,水位上,水位下,水位上,水位下,水位上,水位下,,,(米),,,[α],2*Zi/Bc,,Lc/Bc,,[α],(Zn-Δzi)/(0.5*Bc),,Lc/Bc,

,,,,①1-3,雜填土,,16.00,4.00,70.0,0.00,1.40,0.55,22.40,0.85,0.03,0.2500,0.212,0.212,12.38,12.38,,,,,,,,,,,,,22.40,0.00,8.80,0.00,24,0,,,0.85,,,0.2500,0,0.2,0.2500,0.2498,,,,,

,,,,②1,粉質(zhì)粘土夾粘質(zhì)粉土,,18.80,5.83,85.0,1.40,1.10,,38.08,1.95,0.08,0.2499,0.487,0.275,10.99,23.37,,,,,,,,,,,,,11.28,4.40,0.00,0.00,24.00,,,,1.10,,,0.2499,0,0.2,0.2500,0.2498,,,,,

,,,,②3-1,粘質(zhì)粉土,,18.60,8.27,90.0,2.50,3.60,,69.04,5.55,0.22,0.2497,1.386,0.898,25.32,48.69,,,,,,,,,,,,,0.00,30.96,0.00,0.00,,,,,3.60,,,0.2497,0.2,0.4,0.2498,0.2485,,,,,

,,,,②3-2,砂質(zhì)粉土,,18.80,9.67,120.0,6.10,8.60,,144.72,14.15,0.57,0.2460,3.480,2.095,50.50,99.19,,,,,,,,,,,,,0.00,75.68,0.00,0.00,下臥層位于土層數(shù)：,,,,8.60,,,0.2460,0.4,0.6,0.2485,0.2455,,,,,

,,,,④,淤泥質(zhì)粘土,,16.90,2.45,60.0,14.70,4.30,,174.39,18.45,0.74,0.2422,4.469,0.988,94.03,193.22,,,,,,,,,,,,,0.00,29.67,0.00,0.00,,,,,4.30,,,0.2422,0.6,0.8,0.2455,0.2408,,,,,

,,,,⑤,粉質(zhì)粘土,,18.10,3.83,65.0,19.00,4.90,,214.08,23.35,0.93,0.2367,5.528,1.059,64.45,257.67,25.00,1.00,0.2348,5.869,,,,,,,,,0.00,39.69,0.00,0.00,,,,,4.90,,,0.2367,0.8,1,0.2408,0.2348,0.2348,1,1.2,0.2348,0.2280

,,,,⑥,粘質(zhì)粉土,,19.80,6.77,,23.90,2.65,,240.05,26.00,1.04,0.2334,6.068,0.541,18.62,276.29,26.00,1.04,0.2334,6.068,6.87,,,,,,,,0.00,25.97,0.00,0.00,,,,,2.65,,,0.2334,1,1.2,0.2348,0.2280,0.2334,1,1.2,0.2348,0.2280

,,,,⑦1,砂質(zhì)粉土,,18.80,9.64,,27.00,,,,,,,,,,,,,,,,,,,,,,,0.00,0.00,0.00,0.00,,,,,0.00,,,,,,,,,,,,

,,,,⑦2,粉砂,,19.10,13.44,,32.00,,,,,,,,,,,,,,,,,,,,,,,0.00,0.00,0.00,0.00,,,,,0.00,,,,,,,,,,,,

,,,,,,,,13.44,,45.41,,,,,,,,,,,,,,,,,,,,,,,0.00,0.00,0.00,0.00,,,,,0.00,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0.00,0.00,0.00,0.00,,,,,0.00,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,240.05,,8.80,,,,,,26,,,,,,,,,,,,

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樁基承載力、天然地基承載力、沉降變形計(jì)算

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