Profile steel cement soil pile construction method adaptive to various stratums

Abstract

The invention discloses a profile steel cement soil pile construction method adaptive to various stratums. The method comprises the following steps: (A) hole forming by a drilling machine: a rotary digging or spiral or revolving impact drilling machine is adopted to form a hole in a stratum; and a slurry protective wall is formed to a protective mud skin; (B) filling and stirring of cement soil: soil is filled into the drilling hole; cement powder is added in the drilling hole by a cement soil stirring pile machine for stirring in place to form flow plastic type cement stirring soil; (C) placing of profile steel: profile steel coated with vaseline on the surface is prepared, and is put into the drilling hole by an excavator; (D) connection with a reinforcing component: the top of a profile steel cement soil pile is connected with a ring beam reinforcing component, so that each row of profile steel cement soil piles is formed to a whole support system; and (E) recovery of profile steel: the exposed profile steel is connected with a short steel beam provided with a block; the profile steel is released from the cement soil by a jack; and after the profile steel is lifted out by the excavator, the cement soil is used for filling a left hole. The method is convenient to construct, is reliable in quality, is complete in recovery of the profile steel, is suitable for various stratums, and facilitates to be promoted and applied.

Description

technical field [0001] The invention relates to the technical fields of foundation pit support and foundation temporary treatment, and in particular relates to a construction method of steel cement-soil piles suitable for various strata. Background technique [0002] During the construction of foundation pits, underground passages, shafts, etc., many of the supporting structures are temporary and can be dismantled after the completion of the project. Some supporting projects will also bring great obstacles to the subsequent construction of the project. How to meet temporary engineering safety needs, reduce costs, reduce environmental pollution, and rationally utilize resources is a very important technical issue. As the country's requirements for building a resource-saving and environment-friendly society are getting higher and higher, it is an urgent need to achieve good economic and social benefits to achieve economic and environmental protection similar to the above-menti...

AI Technical Summary

Problems solved by technology

The disadvantage is that plain concrete is used as backfill in the pile, and a large amount of waste concrete is formed in the soil around the foundation pit, which affects the construction of subsequent underground projects; the cost of using concrete is high

The disadvantage is that the manual digging method is not suitable for the situation of groundwater, and it is banned by more and more provinces and regions due to safety reasons; the mixing of cement and soil on the ground requires a special mixing tank and mixing machinery, and the uniformity is difficult to guarantee

[0007] The above support methods all apply green support technology. In addition to the advantages and disadvantages mentioned above, due to the single hole forming method, a common disadvantage is that the applicable stratum is very single, and it is difficult to popularize and use it on a large scale.

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