Water-permeable pipe pile system capable of accelerating soil consolidation and method of using the same

Abstract

Disclosed is a water-permeable pipe pile system capable of accelerating soil consolidation. The system includes a hollow pile, an aerating device, and a drain device. Holes are evenly distributed on the wall of the pile, the bottom of the pile is closed, and a gas-tight gland is provided on the top of the pile. The aerating device includes a gas pipe and a gas pump, the lower end of the gas pipe passing through the gas-tight gland and extending into the cavity of the pile, and the upper end thereof connected to the gas pump. The drain device includes a drain pipe and a water pump, the lower end of the drain pipe passing through the gas-tight gland and extending towards the bottom of the cavity of the pile, and the upper end thereof connected to the water pump. Combining advantages of a water-permeable pipe pile and features of the high-pressure gas splitting technology, the water-permeable pipe pile system can accelerate dissipation of excess pore water pressure in the surrounding soil mass and rapidly increase the skin friction of the pile. Requirements on the bearing capacity of pipe piles and the service life of a construction are thus satisfied and desirable economic effects are achieved. Besides, the method of using the system is simple.

Claims

1. A water-permeable pipe pile system capable of accelerating soil consolidation, comprising: a pile which is hollow, wherein a wall of the pile is provided therein with evenly distributed holes, a bottom of the pile is closed, and a top of the pile is provided thereon with a gas-tight gland, wherein the bottom of the pile is provided thereunder with a pile toe having a cone shape; an aerating device, which comprises a gas pipe and a gas pump, wherein a lower end of the gas pipe passes through the gas-tight gland and extends into a cavity of the pile, and an upper end of the gas pipe is connected to the gas pump, wherein the lower end of the gas pipe is located below a part of the holes; and a drain device, which comprises a drain pipe and a water pump, wherein a lower end of the drain pipe passes through the gas-tight gland and extends towards a bottom of the cavity of the pile, and an upper end of the drain pipe is connected to the water pump.

2. The water-permeable pipe pile system capable of accelerating soil consolidation according to claim 1, wherein the lower end of the drain pipe is provided thereon with a filter tube which is located inside the cavity.

3. The water-permeable pipe pile system capable of accelerating soil consolidation according to claim 1, wherein the lower end of the gas pipe is located within an upper part of the cavity.

4. A method of using the water-permeable pipe pile system capable of accelerating soil consolidation according to claim 1, comprising the following steps: (1) leveling a site and driving a water-permeable pipe pile into a ground, wherein a wall of the pile is provided therein with evenly distributed holes, and a bottom of the pile is provided thereunder with a pile toe having a cone shape; (2) installing an aerating device and a drain device, and installing a gas-tight gland, wherein a gas pipe passes through the gas-tight gland and extends into a cavity of the pile, and a drain pipe passes through the gas-tight gland and extends towards a bottom of the cavity of the pile, wherein a lower end of the gas pipe is located below a part of the holes; and (3) repeatedly pressurizing the water-permeable pipe pile by means of the aerating device and repeatedly pumping water from the water-permeable pipe pile by means of the drain device, so as to accelerate dissipation of excess pore water pressure in a surrounding soil mass.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 schematically shows the structure of a water-permeable pipe pile system capable of accelerating soil consolidation in the present disclosure;

(2) FIG. 2 schematically shows the top view of a pile in the water-permeable pipe pile system capable of accelerating soil consolidation in the present disclosure; and

(3) FIG. 3 schematically shows the mechanism of aerating by an aerating device in the water-permeable pipe pile system capable of accelerating soil consolidation in the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

(4) Embodiments of the present disclosure will be illustrated in detail hereinafter in combination with the accompanying drawings. Yet, it shall be understood that the protection scope of the present disclosure is not limited by the embodiments.

(5) Unless specifically pointed out, in the description and the claims, the word comprise or its grammatical variants shall be understood as comprising the members or components later pointed out and not excluding other members or components.

(6) As shown in FIG. 1 to FIG. 3, a water-permeable pipe pile system capable of accelerating soil consolidation in the present disclosure comprises a pile 1, an aerating device 2, and a drain device 3. The pile 1 is hollow, that is, the pile 1 has a cavity. Holes 11 are evenly distributed on the wall of the pile 1. The pile 1 has a closed bottom. Preferably, a pile toe 12 is provided on the bottom of the pile. Having a pile toe is conducive to piling. A temporary gas-tight gland 4 is provided on the top of the pile 1. The aerating device 2 comprises a gas pipe 21 and a gas pump 22. The lower end of the gas pipe 21 passes through the gas-tight gland 4 and extends into the cavity of the pile 1. The lower end is located above the upper part of the cavity. The upper end of the gas pipe 21 is connected to the gas pump 22. The drain device 3 comprises a drain pipe 31 and a water pump 32. The lower end of the drain pipe 31 passes through the gas-tight gland 4 and extends towards the bottom of the cavity of the pile 1, and the upper end thereof is connected to the water pump 32. Combining advantages of a water-permeable pipe pile and features of the high-pressure gas splitting technology, the water-permeable pipe pile system capable of accelerating soil consolidation can accelerate dissipation of excess pore water pressure in the surrounding soil mass and rapidly increase the skin friction of the pile, which increases the bearing capacity of pipe piles and meets the requirement on the construction service life.

(7) Preferably, a filter tube 33 is provided on the lower end of the drain pipe 31. The filter tube 33 is located inside the cavity. During pumping, the filter tube can filtrate large impurities, preventing entry of impurities into the filter tube and blocking therein.

(8) A method of using the water-permeable pipe pile system capable of accelerating soil consolidation is provided. The method comprises steps of: (1) leveling a site and driving a water-permeable pipe pile into the ground; (2) installing an aerating device 2 and a pumping device 3, and then installing a gas-tight gland, a gas pipe passing through the gas-tight gland and extending into the cavity of the pile, and a drain pipe passing through the gas-tight gland and extending towards the bottom of the cavity of the pile; and (3) repeatedly pressurizing the water-permeable pipe pile by means of the aerating device and pumping water from the water-permeable pipe pile by means of the drain device, so as to accelerate dissipation of excess pore water pressure in the surrounding soil mass. The method ensures the service life of the pipe pile and application of this system in the technical field of pile foundation engineering can achieve obvious social and economic benefits.

(9) The above exemplary embodiments are used for illustration rather than restricting the present disclosure and apparently various amendments can be made to the above embodiments based on teachings of the above disclosure. The purpose of selection and description of the above exemplary embodiments is to explain specific principles and practical application of the present disclosure, so that those skilled in the art can implement and take advantage of different exemplary embodiments of the present disclosure and make different choices and variations. The protection scope of the present disclosure is defined by the claims and equivalent forms of the claims.