Root pressure grouting pile and construction method thereof

Abstract

The invention discloses a root pressure grouting pile comprising a cylindrical pile foundation, wherein the root pressure grouting pile further comprises a bearing platform surface arranged on the top of the cylindrical pile foundation, and a plurality of root keys are arranged on the cylindrical surface of the pile foundation; or concentrically projecting support disks are arranged on the cylindrical surface of the pile foundation, and the plurality of root keys are connected with the support disks. The construction method comprises the following steps of: firstly, digging the earthwork of a first segment of pile hole, and extruding the holes of the support disks after forming the first segment of pile hole; horizontally knocking the root keys out of the holes of the support disks, respectively, and reserving the inner ends of the root keys in the pile hole; building a supporting wall template along the side wall of the pile hole, and pouring supporting wall concrete; repeating the steps, circularly working downwards segment by segment until the depth of the pile hole reaches a required demand; and hanging a preformed pile foundation reinforcement cage in a supporting wall hole, and pouring the pile body of the pile foundation. Therefore, in the pile structure built by the invention, the stress area of the pile foundation is increased, the bearing pressure of the pile foundation is improved, the construction materials are few, the construction is convenient, and the construction cost is lowered.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a root-type pressure-bearing cast-in-place pile and a construction method thereof. Background technique [0002] In the field of construction, pile foundations are usually used for bearing pressure, and pile foundations bear pressure through the joint action of pile side resistance and pile end resistance. The bearing capacity of the pile foundation is related to the resistance provided by the pile side and pile end. By increasing the diameter of the pile foundation or the length of the pile foundation, that is, by increasing the stressed area, the pile side resistance or pile end resistance of the pile foundation can be improved. , thereby increasing the bearing capacity of the pile foundation. However, in actual construction, the longer the pile foundation is, the more difficult the construction is; the larger the diameter of the pile foundation, the more building materials ar...

AI Technical Summary

Problems solved by technology

However, in actual construction, the longer the pile foundation is, the more difficult the construction is; the larger the diameter of the pile foundation, the more building materials are required, and the higher the construction cost of the pile foundation; the final pressure-bearing effect of the pile foundation is improved. Compared with the construction difficulty and construction cost of the pile foundation, it is disproportionate

This method of simply increasing the diameter or length of the pile foundation needs to consume a large amount of concrete, which is difficult to construct and not economical

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