1.2m的钻孔桩987.39/(0.6*0.6*3.14)=873元/方1.8m的钻孔桩2369/(0.9*0.9*3.14)=931元/方综合下的话，1.5m的钻孔桩（873+931）/2=902元/方1.5m钻孔桩单价902*0.75*0.75*3.14=1593元/m
