A.3.0m
B.4.1m
C.2.2m
D.1.8m
A.pcr甲>pcr乙
B.pcr甲<cr乙
C.pcr甲=pcr乙
D.不确定
A.-0.45m,0.4m,0.92m
B.-0.12m,0.5m,0.92m
C.-0.12m,0.4m,1.92m
D.-1.12m,0.4m,0.92m
A. -0.12m,0.4m,1.92m
B.-1.12m,0.4m,0.92m
C.-0.45m,0.4m,0.92m
D.-0.12m,0.5m,0.92m
A、增大垫层厚度
B、增大基础宽度
C、改用压力扩散角更大的换填材料
D、增大基础埋深
E、提高基础混凝土强度等级或增加基础配筋量
水塔基础直径4m,传递中心垂直荷载5000kN,基础埋深4m,地基土为中等密实未饱和细砂,γ=18kN/m3,φ=32°,求地基强度安全系数(用勃朗特一维西克公式)。