完結(jié)版抗滑穩(wěn)定及泵房底板應(yīng)力計(jì)算

表5.1-1抗滑穩(wěn)定及泵房底板應(yīng)力計(jì)算,,,,,,,,,,,,,

工況,荷載,,計(jì)算式,垂直力（KN）,,水平力（KN）,,"到A點(diǎn)的距離

(m)",力矩(KN.M),,,,

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

工況(無水),泵房重,W1,=109.29×25+38.05×18,3417.150,,,,2.900,9909.735,,,,

,機(jī)組重,W2,=3×10,30.000,,,,2.900,87.000,,,,

,進(jìn)水閘,W3,=30.64×25,766.000,,,,0.300,,229.800,,,

,土壓力,P1,=1/2×(18.62-9.8)×42×10.2×0.5,,,359.856,,1.400,,503.798,,,

,小計(jì),,,4213.150,0.000,359.856,0.000,,9996.735,733.598,,,

,合計(jì),,,4213.150,,359.856,,,9263.137,,,,

,計(jì)算得：抗滑穩(wěn)定安全系數(shù)Kc=(0.22×4213.15)/359.856=2.57>[Kc]=1.05，達(dá)到抗滑穩(wěn)定安全要求,,,,,,,,,,,,2.575733071

,計(jì)算得：抗傾覆穩(wěn)定安全系數(shù)Ko=9996.735/733.598=13.63>[Ko]=1.50，達(dá)到抗傾覆穩(wěn)定安全要求,,,,,,,,,,,,13.62698583

,合力偏心距e0=B/2-e=5.8/2-(9263.137/4213.15)=,,,0.701,(偏下游)<L/10=10.8/10=1.08m,,,,,,,0.701374981,

,由,得,,σmin=,41.05,<[fk]=165Kpa,,,,,,,41.05179509

,,,,σmax=,93.47,,,,,,,,93.46768128

"穩(wěn)

定

與

應(yīng)

力

計(jì)

算",,抗剪強(qiáng)度計(jì)算公式：,,,,地基應(yīng)力以材料力學(xué)方法計(jì)算:,,,,,,,

,,"式中K───抗滑穩(wěn)定安全系數(shù)；

f───泵房底板與地基接觸面的抗剪摩擦系數(shù)，粉砂f=0.22；

ΣW──作用于泵房底板上全部荷載對滑動(dòng)平面的法向分值，KN；

ΣP──作用于泵房底板上全部荷載對滑動(dòng)平面的切向分值，KN；",,,,"式中：σ──泵房底板垂直應(yīng)力，KPa；

ΣW──作用于泵房底板上全部荷載在壩基截面上法向力的總和，KN；

ΣM──作用于泵房底板上全部荷載對底板截面形心軸的力矩總和，KN?m；

B──底板寬度，m；

L──底板長度，m。",,,,,,,

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

表5.1-2抗滑穩(wěn)定及泵房底板應(yīng)力計(jì)算,,,,,,,,,,,,,

工況,荷載,,計(jì)算式,垂直力（KN）,,水平力（KN）,,"到A點(diǎn)的距離

(m)",力矩(KN.M),,,,

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

工況(最高運(yùn)行水位12.63m),泵房重,W1,=109.29×25+38.05×18,3417.150,,,,2.900,9909.735,,,,

,機(jī)組重,W2,=3×10,30.000,,,,2.900,87.000,,,,

,水重,W水,=2.3×4.4×9.6×9.8,952.0896,,,,2.500,2380.224,,,,

,進(jìn)水閘,W3,=30.64×25,766.000,,,,0.300,,229.800,,,

,土壓力,P1,=1/2×18.62×42×10.2×0.5,,,759.696,,1.400,,1063.574,,,

,水壓力,P2,=1/2×9.8×2.3×2.3×4.5,,,,116.645,1.500,174.967,,,,

,揚(yáng)壓力,U1,=1/2×10.8×5.8×3×9.8,,920.808,,,2.900,,2670.343,,,

,,,,5165.240,920.808,759.696,116.645,,12551.926,3963.718,,,

,,,,4244.432,,643.052,,,8588.208,,,,

,計(jì)算得：抗滑穩(wěn)定安全系數(shù)Kc=(0.22×4244.432)/643.052=1.45>[Kc]=1.05,,,,,,,,,,,,1.452099796

,計(jì)算得：抗傾覆穩(wěn)定安全系數(shù)Ko=12551.926/3963.718=3.17>[Ko]=1.50,,,,,,,,,,,,3.166705355

,合力偏心距e0=B/2-e=5.8/2-(8588.208/4244.432)=,,,0.877,(偏下游)<L/10=10.8/10=1.08m,,,,,,,0.876594051,

,由,得,,σmin=,34.76,<[fk]=150Kpa,,,,,,,34.76065515

,,,,σmax=,100.76,,,,,,,,100.7575952

"穩(wěn)

定

與

應(yīng)

力

計(jì)

算",,抗剪強(qiáng)度計(jì)算公式：,,,,地基應(yīng)力以材料力學(xué)方法計(jì)算:,,,,,,,

,,"式中K───抗滑穩(wěn)定安全系數(shù)；

f───泵房底板與地基接觸面的抗剪摩擦系數(shù)，粉砂f=0.22；

ΣW──作用于泵房底板上全部荷載對滑動(dòng)平面的法向分值，KN；

ΣP──作用于泵房底板上全部荷載對滑動(dòng)平面的切向分值，KN；",,,,"式中：σ──泵房底板垂直應(yīng)力，KPa