某开挖深度h=5m的基坑,土层为软土,重度y=18kN/m3,τ0=10kPa,φ=0,支护结构入土深度t=5m,坑顶地面荷载q=20kPa,设Nc=5.14,Nq=1.0,则坑底土抗隆起稳定安全系数为()
A.0. 63 B.0.71 C.0.80 D.0.91正确答案B
某开挖深度h=5m的基坑,土层为软土,重度y=18kN/m3,τ0=10kPa,φ=0,支护结构入土深度t=5m,坑顶地面荷载q=20kPa,设Nc=5.14,Nq=1.0,则坑底土抗隆起稳定安全系数为()
A.0. 63 B.0.71 C.0.80 D.0.91正确答案B