This kind of construction method refers to the construction method of burying the steel pipe piles with side protrusions(ribs)in the cement-soil column,and integrating the two to form a composite pile.The so-called cement-soil column is a mixture of cement slurry and soil with a poor mix ratio injected from the cobalt head while drilling with a special drill bit on the pile position.The diameter of the synthetic steel pipe pile(به این معنا که,the diameter of the cement-soil column)is 600~1500mm,which is 200~400mm larger than the outer diameter of the steel pipe,and the applicable pile[…]
