完结版抗滑稳定及泵房底板应力计算

表5.1-1抗滑稳定及泵房底板应力计算,,,,,,,,,,,,,

工况,荷载,,计算式,垂直力（KN）,,水平力（KN）,,"到A点的距离

(m)",力矩(KN.M),,,,

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

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

,机组重,W2,=3×10,30.000,,,,2.900,87.000,,,,

,进水闸,W3,=30.64×25,766.000,,,,0.300,,229.800,,,

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

,小计,,,4213.150,0.000,359.856,0.000,,9996.735,733.598,,,

,合计,,,4213.150,,359.856,,,9263.137,,,,

,计算得：抗滑稳定安全系数Kc=(0.22×4213.15)/359.856=2.57>[Kc]=1.05，达到抗滑稳定安全要求,,,,,,,,,,,,2.575733071

,计算得：抗倾覆稳定安全系数Ko=9996.735/733.598=13.63>[Ko]=1.50，达到抗倾覆稳定安全要求,,,,,,,,,,,,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

"稳

定

与

应

力

计

算",,抗剪强度计算公式：,,,,地基应力以材料力学方法计算:,,,,,,,

,,"式中K───抗滑稳定安全系数；

f───泵房底板与地基接触面的抗剪摩擦系数，粉砂f=0.22；

ΣW──作用于泵房底板上全部荷载对滑动平面的法向分值，KN；

ΣP──作用于泵房底板上全部荷载对滑动平面的切向分值，KN；",,,,"式中：σ──泵房底板垂直应力，KPa；

ΣW──作用于泵房底板上全部荷载在坝基截面上法向力的总和，KN；

ΣM──作用于泵房底板上全部荷载对底板截面形心轴的力矩总和，KN•m；

B──底板宽度，m；

L──底板长度，m。",,,,,,,

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

表5.1-2抗滑稳定及泵房底板应力计算,,,,,,,,,,,,,

工况,荷载,,计算式,垂直力（KN）,,水平力（KN）,,"到A点的距离

(m)",力矩(KN.M),,,,

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

工况(最高运行水位12.63m),泵房重,W1,=109.29×25+38.05×18,3417.150,,,,2.900,9909.735,,,,

,机组重,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,,,,

,进水闸,W3,=30.64×25,766.000,,,,0.300,,229.800,,,

,土压力,P1,=1/2×18.62×42×10.2×0.5,,,759.696,,1.400,,1063.574,,,

,水压力,P2,=1/2×9.8×2.3×2.3×4.5,,,,116.645,1.500,174.967,,,,

,扬压力,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,,,,

,计算得：抗滑稳定安全系数Kc=(0.22×4244.432)/643.052=1.45>[Kc]=1.05,,,,,,,,,,,,1.452099796

,计算得：抗倾覆稳定安全系数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

"稳

定

与

应

力

计

算",,抗剪强度计算公式：,,,,地基应力以材料力学方法计算:,,,,,,,

,,"式中K───抗滑稳定安全系数；

f───泵房底板与地基接触面的抗剪摩擦系数，粉砂f=0.22；

ΣW──作用于泵房底板上全部荷载对滑动平面的法向分值，KN；

ΣP──作用于泵房底板上全部荷载对滑动平面的切向分值，KN；",,,,"式中：σ──泵房底板垂直应力，KPa