1) l=0.017453ar=0.017453X92X0.325=0.522mAl=l/2rl-C(r-h)=l/20.325X0.522-0.469(0.325-0.1)=0.032m22) 圆A=3nr2=3X3.1416X0.325X0.325=0.995m23) 650搅拌桩加固按大幅面积A2=圆A4Al=0.995m2-0.032m2X4=0.87m2计算。(公式详见五金手册)4) 0650搅拌桩小幅面积=nr2=3.1416X0.325X0.325=0.3318m25) 0650搅拌桩中幅面积二(0.87+0.3318)/2=0.6m2850水泥搅拌止水桩围护每组桩截面积计算方式LG30T1) l=0.017453ar=0.017453X90X0.425=0.67mAl=l/2rl-C(r-h)=1/20.425X0.668-0.6007(0.425-0.125)=0.05185m22) 圆A=3nr2=3XnX0.425X0.425=1.7024m23) 0850搅拌桩