Passive reinforcement construction method suitable for underwater cast-in-place pile

Abstract

The invention provides a passive reinforcement construction method suitable for an underwater cast-in-place pile. The passive reinforcement construction method comprises the following steps that S1, a specific underwater construction position of the cast-in-place pile is determined according to design requirements; and S2, a plurality of high-pressure jet grouting piles are uniformly constructed in the circumferential direction of the center construction position of the cast-in-place pile through a high-pressure jet grouting technology, the high-pressure jet grouting piles penetrate through an underwater sludge layer, a distance is reserved between every two adjacent high-pressure jet grouting piles, the distance L between the centers of the high-pressure jet grouting piles and the center of the cast-in-place pile is equal to R + r. According to the passive reinforcement construction method for the underwater cast-in-place pile, operation is easy, use is convenient and safe, the plurality of high-pressure jet grouting piles reinforce the silt layer, namely the construction position of the cast-in-place pile in advance, meanwhile, construction of the cast-in-place pile in the follow-up drilling and grouting process is reinforced, the overall structure is simple, and stress is definite.

Description

technical field [0001] The invention belongs to the field of civil engineering, in particular to a passive reinforcement construction method suitable for underwater cast-in-place piles. Background technique [0002] During the construction of bored piles, the method of setting up a temporary platform, setting up a casing for positioning protection, and drilling a drilling rig is usually used for drilling construction. When the geological exploration is unclear, the drilling depth is relatively large, etc., the traditional construction method has the following problems: [0003] First: it occupies a lot of construction materials, the quality of bored piles is poor, and quality accidents such as deviation and broken piles are prone to occur, and the waste is large. [0004] Second: For the construction of bored piles under the geological conditions of ultra-thick silt layer, the applicability of the steel casing is not high, because the casing needs to pass through the silt l...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention aims to propose a passive reinforcement construction method suitable for underwater cast-in-place piles, so as to solve the unfavorable construction conditions such as typhoon-prone areas, thick silt geological layers, and deep and large bored pile holes. The construction quality of down-bored cast-in-place piles is not high, and construction quality accidents such as inclined holes and broken piles are prone to occur. At the same time, it solves the waste and high cost of inserting steel casing construction, which is difficult, unsafe, and less effective. minor issues

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