主动土压力计算(库仑、朗肯理论)
2020-02-16
来源:乌哈旅游
填土重度γ18kN/m挡土墙的高度h4.2m地表均布荷载q2kN/m土的粘聚力c15kN/m墙背填土内摩擦角ψ15°弧度值=挡土墙的墙背倾角α70°弧度值=土的坡度β15°弧度值=土对挡土墙背的摩擦角δ15°弧度值=κq=1+2*q/γ/h*Sinα*Cosβ/Sin(α+β) =η= 2 * c / γ / h =A=Sin(α+β)/[Sinα*Sin(α+β-ψ-δ)]^2=B=κq*[Sin(α+β)*Sin(α-δ)+Sin(ψ+δ)*Sin(ψ-β)]= C=2*η*Sinα*Cosψ*Cos(α+β-ψ-δ)=D=κq*Sin(α+β)*Sin(ψ-β)+η*Sinα*Cosψ=E=κq*Sin(α-δ)*Sin(ψ+δ)+η*Sinα*Cosψ=Ka = A * [B + C - 2 * (D * E) ^ 0.5] =Ea = 0.5 * γ * h ^ 2 * Ka =0.261.220.260.261.050.401.680.860.410.360.790.3453.93