Slip-cast enlarged toe pile and construction method thereof

Abstract

The invention provides a slip-cast enlarged toe pile and a construction method thereof. A pile body is to plant a steel pipe pile or a prestressed concrete pipe pile in a cement soil stirring pile to form a variable-section pile through oriented grouting; the pulling resistance and the compressive resistance of the pile are improved through extrusion and expansion of surrounding soil and the reinforcing effect on the cement soil stirring pile; meanwhile, the slip-cast enlarged toe pile is suitable for multiple soil layer regions; and under the precondition of retaining the advantages of the slip-cast enlarged toe pile, the advantages of environmental protection, high efficiency and material saving are achieved. The construction structure retains the advantages of three traditional enlarged toe piles, reduces the environment influence by the mud discharge, solves the problem of lower efficiency in the drilling construction, improves the construction efficiency, reduces the mud replacement link, and saves the cement mortar. The construction method of static-pressure plantation of the pile body of the slip-cast enlarged toe pile into the cement soil stirring pile achieves the effects of environmental protection, high efficiency and material saving, and is a novel construction structure of the pile body of the slip-cast enlarged toe pile with high efficiency, economy and reliability.

Description

technical field [0001] The invention relates to a grouting forming bottom expansion pile and a construction method thereof. Background technique [0002] The pile body construction methods of the existing grouting forming and expanding bottom piles, grouting forming and expanding bottom steel pipe piles and grouting forming and expanding bottom prestressed concrete pipe piles are mainly divided into three types: Two kinds: [0003] One is drilling a hole, implanting a steel cage, pouring concrete into a pile, and grouting to expand the bottom; [0004] The other is to drill holes, implant prefabricated piles (steel pipe piles or prestressed concrete pipe piles), replace the mud in the holes with cement mortar, and expand the bottom by grouting. [0005] (1) Grouting forming bottom expansion bored pile: The construction technology is a combination of traditional bored pile technology and grouting technology, that is, firstly, the traditional bored pile technology is used to...

AI Technical Summary

Problems solved by technology

[0014] One is that the environmental impact is relatively large, and a large amount of mud is generated when drilling a hole, which is likely to cause environmental pollution;

[0015] Second, the construction efficiency is low, and the drilling time is long, which restricts the improvement of construction efficiency;

[0016] The third is that the material consumption is relatively large, and a large amount of cement mortar is required to replace the mud between the pile body and the hole wall

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