Double-tube negative pressure underwater pile foundation with hydraulically driven pile stabilizing plate and installation method

Abstract

The present invention discloses a double-tube negative pressure underwater pile foundation of a hydraulically driven pile stabilizing plate and an installation method, which relates to the field of underwater pile foundations, and includes an inner pile tube, an outer pile tube, a gear structure and a hydraulic structure; the inner pile tube is arranged inside the outer pile tube, and a gear structure and a hydraulic structure are arranged inside the inner pile tube; the driven structure in the gear structure is arranged at the input end of the hydraulic structure, and the gear structure works so that the output end of the hydraulic structure works. The present invention facilitates the installation and removal of the pile foundation by arranging the gear structure and the hydraulic structure, improves the stability of the pile foundation in water, greatly improves the anti-sinking and anti-overturning capabilities of the pile foundation, is conducive to the stability of the pile foundation, and improves the safety of the service of the surface structure.

Description

Technical Field

[0001] The invention relates to the field of underwater pile foundations, and in particular to a double-tube negative pressure underwater pile foundation of a hydraulically driven pile stabilizing plate and an installation method thereof. Background Art

[0002] With the development of social economy, a large number of cross-river, cross-sea, river and offshore structures have sprung up like mushrooms after a rain, but the above-mentioned water-related structures often need to install pile foundations on the soft underwater bed surface to support the water structures. The bearing capacity of the underwater pile foundation, the poor installation conditions and the difficulty have always hindered the development of the industry. Therefore, the present invention proposes a double-tube negative pressure underwater pile foundation with a hydraulically driven pile stabilizing plate and an installation method, which improves the bearing capacity of the pile foundation and facilitates the installation and recycling and removal of the pile foundation. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a double-cylinder negative pressure underwater pile foundation with a hydraulically driven pile stabilizing plate and an installation method. By arranging a gear structure and a hydraulic structure, the installation and removal of the pile foundation are facilitated, the stability of the pile foundation in water is improved, and the anti-sinking and anti-overturning capabilities of the pile foundation are greatly improved, which is beneficial to the stability of the pile foundation and improves the safety of the service of the surface structure.

[0004] The present invention achieves the above technical objectives through the following technical means.

[0005] A double-cylinder negative pressure underwater pile foundation with a hydraulically driven pile stabilizing plate comprises an inner pile cylinder, an outer pile cylinder, a gear structure and a hydraulic structure; the inner pile cylinder is arranged on the inner side of the outer pile cylinder, and the inner pile cylinder is provided with a gear structure and a hydraulic structure; the driven structure in the gear structure is arranged at the input end of the hydraulic structure, and the gear structure works so that the output end of the hydraulic structure works to achieve stabilization / recovery of the pile foundation.

[0006] In the above scheme, the gear structure includes a gear and a rack transmission; the gear is meshed with the rack on the rack transmission, the rack is fixedly connected to the transmission circular shaft, and a sealing oil plug is provided at the lower end of the transmission circular shaft, and the sealing oil plug cooperates with the hydraulic oil pipe system to squeeze the hydraulic oil.

[0007] In the above scheme, the rack transmission includes a rack, an upper limiter, a lower limiter, a transmission circular shaft and a sealing oil plug; the upper end and the lower end of the rack are respectively installed with an upper limiter and a lower limiter, and the upper limiter and the lower limiter are used to prevent the rack and the gear from slipping; a transmission circular shaft is arranged below the lower limiter.

[0008] In the above scheme, the hydraulic structure includes an anti-tilting stabilizing plate, an anti-sinking stabilizing plate, an oil tank and a hydraulic pipe system; the main pipe of the hydraulic pipe system is welded to the inner pile tube through a separating protective plate; a rack transmission in a gear structure is arranged in the main pipe of the hydraulic pipe system; the sealing oil plug at the end of the rack transmission squeezes the hydraulic oil in the main pipe of the hydraulic pipe system, thereby driving the anti-tilting stabilizing plate and the anti-sinking stabilizing plate on the oil tank to work.

[0009] In the above scheme, the oil tank is connected to the branch pipe in the hydraulic pipe system; the piston in the oil tank is fixedly connected to the anti-tilting stabilizing plate and the anti-sinking stabilizing plate; there are several oil tanks.

[0010] In the above scheme, the anti-tilting stabilizing plate and the anti-sinking stabilizing plate both extend out of the inner pile tube; several anti-tilting stabilizing plates form a "flower" shaped structure; several anti-sinking stabilizing plates form an inverted "flower" shaped structure; the anti-sinking stabilizing plate is close to the lower end of the inner pile tube.

[0011] In the above solution, the inner pile tube and the outer pile tube are reinforced by a reinforcing truss.

[0012] In the above scheme, a water pump and a control knob are arranged on the outer tube wall of the outer pile tube; the water pump can rotate in both directions, and is used to extract water from the inside of the pile tube during installation and penetration, to generate negative penetration pressure, so that the pile foundation can be better penetrated, and is used to inject water into the outer pile tube during the process of disassembly and extraction, to generate extraction pressure for dismantling and recycling; the lower end of the outer tube wall is a conical structure.

[0013] In the above solution, the inner pile cylinder is an inverted cone-shaped sealing structure.

[0014] The installation method of the double-tube negative pressure underwater pile foundation with hydraulically driven pile stabilizing plates is that after the pile foundation is hoisted to the installation position, the water pump continuously discharges water to the outside of the pile foundation until the pile foundation is fully penetrated; then, the gear rotates counterclockwise to make the rack drive move downward to drive the hydraulic oil inside the hydraulic oil pipe system into the oil tank to push the anti-sinking stabilizing plate and the anti-tilting stabilizing plate to fully extend, thereby completing the installation and stabilization of the pile foundation;

[0015] When the pile foundation is finished serving, the gear rotates clockwise, causing the rack drive to move upward to drive the hydraulic oil pipe system to suck out the hydraulic oil inside the oil tank, pulling the anti-sinking stabilization plate and the anti-tilting stabilization plate to fully retract; then the water pump continuously injects water into the pile foundation until the pile foundation is completely pulled out, completing the recovery of the pile foundation.

[0016] The beneficial effects are:

[0017] 1. The present invention adopts the gear transmission, hydraulic transmission principle and fluid negative pressure principle, and organically combines and designs a structural system that is easy to install and disassemble and can improve the stability of the pile foundation.

[0018] 2. The present invention improves the pile side resistance and supporting capacity of the pile foundation by designing the pile stabilizing plate inclined upward and downward.

[0019] 3. The present invention adopts the gear transmission, hydraulic transmission principle and fluid negative pressure principle, and organically combines and designs a structural system that is easy to install and disassemble and can improve the stability of the pile foundation, which facilitates the installation process of the pile foundation and makes the pile foundation easy to dismantle and recycle, reduces the installation cost of the pile foundation, improves the utilization rate of the pile foundation, and effectively reduces the full-cycle cost for the construction of water surface structures; at the same time, the extendable and retractable upward and downward inclined pile stabilizing plates greatly improve the anti-sinking and anti-overturning capabilities of the pile foundation, which is beneficial to the stability of the pile foundation and improves the safety of the service of the water surface structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the gear transmission system of the present invention;

[0022] Figure 3 It is a schematic diagram of the operation of the pile penetration process of the present invention;

[0023] Figure 4 This is a schematic diagram of the operation of the pile stabilizing plate opening process of the present invention;

[0024] Figure 5 It is a schematic diagram of the in-situ structural form of the inner pile cylinder of the present invention;

[0025] Figure 6 It is a schematic diagram of the operation of the pile stabilizing plate retraction process of the present invention;

[0026] Figure 7 It is a schematic diagram of the operation of the pile recovery process of the present invention.

[0027] Reference numerals:

[0028] 1-outer pile cylinder; 2-inner pile cylinder; 3-reinforced truss; 11-outer cylinder wall; 12-water pump; 13-control knob; 21-hydraulic pipe system; 22-oil tank; 23-anti-sinking stabilizing plate; 24-anti-tilting stabilizing plate; 26-electric motor; 27-battery; 28-rack transmission; 281-rack; 282-upper limiter; 283-lower limiter; 284-transmission circular shaft; 285-sealing oil plug; 29-gear. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] A double-tube negative pressure underwater pile foundation with a hydraulically driven pile stabilizing plate comprises an outer pile tube 1, an inner pile tube 2 and a reinforcing truss 3; wherein the outer pile tube 1 and the inner pile tube 2 are welded and fixed together at the top, and the integrity between the outer pile tube 1 and the inner pile tube 2 is strengthened by the reinforcing truss 3, so as to better withstand the stress of the pile foundation in complex underwater working conditions.

[0033] The outer pile barrel 1 includes an outer barrel wall 11, wherein the outer barrel wall 11 is a cylindrical structure with a sharp bottom and an open bottom. The sharp and open outer barrel enables the pile foundation to penetrate better into the underwater mud; a water pump 12 is installed on the top of the outer barrel wall 11, and the impeller of the water pump 12 can rotate in both directions. During installation and penetration, it is used to extract water inside the pile barrel to generate penetration negative pressure, so that the pile foundation can penetrate better. During the process of disassembly and extraction, it is used to inject water into the outer pile barrel 1 to generate extraction pressure for disassembly and recycling; a control knob 13 is installed on the top of the outer barrel wall 11, and is watertightly connected to the internal components of the pile foundation to effectively control the installation and disassembly process of the pile foundation, and the control method of the control knob 13 can be performed by frogman operation, underwater robot operation, external remote control equipment, etc., but is not limited to this.

[0034] The inner pile tube 2 includes an inner tube outer shell 20, wherein the inner tube outer shell 20 is a cylindrical structure with a conical sharp corner at the bottom, and the conical sharp corner is conducive to the penetration process of the pile foundation. At the same time, the inner tube outer shell 20 can provide a dense and anti-corrosion condition for the components inside the inner pile tube 2 to improve the working life of the pile foundation; the hydraulic pipe system 21 includes a middle main pipe and side branches, which is a rigid pipe system made of steel structure. The middle main pipe of the hydraulic pipe system 21 is installed in the middle of the inner pile tube 2 and is tightly welded with the partition protection plate 25. The upper end of the middle main pipe of the hydraulic pipe system 21 is connected to the rack drive 28, and the bottom is sealed. The side branches of the hydraulic pipe system 21 are respectively connected to the oil tank 22 at the bottom of the anti-tilting and stabilizing plate 24 and the anti-sinking and stabilizing plate 23, and the hydraulic pipe system 21 is filled with hydraulic oil to form a set of hydraulic system; the anti-sinking and stabilizing plate 23 and the anti-tilting and stabilizing plate 24 are welded by a sharp long plate at the front end and a sealing piston plate at the rear end, and are installed in the oil tank 22, and the sharp long plate at the front end just fits with the opening reserved in the inner tube shell 20, so as to facilitate the anti-sinking and stabilizing The fixing plate 23 and the anti-tilting stabilizing plate 24 are retracted; one section of the oil tank 22 is connected to the side branch of the hydraulic pipe system 21, and one section is fixed to the inner tube shell 20; the inner and outer edges of the partition protection plate 25 are respectively welded tightly with the inner tube shell 20 and the middle main pipe of the hydraulic pipe system 21 to form an upper watertight space and placement position for the components of the inner pile tube 2; the upper part of the partition protection plate 25 is installed with components such as an electric motor 26 and a battery 27, and the electric motor 26 and the battery 27 are connected through cables and are connected to the control knob 13 of the outer pile tube 1 Through the watertight connection of cables, interaction with external energy and control information is realized; the rack drive 28 is embedded in the middle main pipe of the hydraulic pipe system 21 and meshes with the gear 29, so as to control the hydraulic oil system through the gear transmission to hydraulically control the anti-sinking stabilizing plate 23 and the anti-tilting stabilizing plate 24; the gear 29 is fixedly installed on the inner tube outer shell 20 and the partition protection plate 25, and is connected to the motor 26, and the movement of the rack drive 28 is controlled by forward and reverse rotation to realize the control of the anti-sinking stabilizing plate 23 and the anti-tilting stabilizing plate 24.

[0035] The rack transmission 28 includes a rack 281, an upper limiter 282, a lower limiter 283, a transmission shaft 284 and a sealing oil plug 285; wherein the rack 281 is meshed with the gear 29, and the gear 29 rotates to drive the rack transmission 28 to move up and down, forming a set of gear transmission devices; the upper limiter 282 and the lower limiter 283 are respectively installed at the upper and lower ends of the rack 281 to prevent the rack transmission 28 and the gear 29 from slipping; the transmission shaft 284 is welded to the lower part of the lower limiter 283, and the sealing oil plug 285 is welded to the bottom of the transmission shaft 284, and the bottom of the sealing oil plug 285 is embedded and installed inside the middle main pipe of the hydraulic pipe system 21 to control the operation of the hydraulic system.

[0036] A method for installing a double-tube negative pressure underwater pile foundation with a hydraulically driven pile stabilizing plate.

[0037] When the pile foundation is hoisted to the installation position, the water pump 12 continuously drains water out of the pile foundation until the pile body is completely filled; then, the gear 29 rotates counterclockwise, causing the rack driver 28 to move downward, so as to drive the hydraulic oil inside the hydraulic pipe system 21 into the oil tank 22 to push the anti-sinking stabilizing plate 23 and the anti-tilting stabilizing plate 24 to fully extend, thereby completing the installation and stabilization of the pile foundation;

[0038] When the pile foundation is finished serving, the gear 29 rotates clockwise, causing the rack drive 28 to move upward, driving the hydraulic pipe system 21 to suck out the hydraulic oil in the oil tank 22, pulling the anti-sinking stabilizing plate 23 and the anti-tilting stabilizing plate 24 to fully retract; then the water pump 12 continuously injects water into the pile foundation until the pile body is completely pulled out, completing the recovery of the pile foundation.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0040] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and intent of the present invention.

Claims

1. A double-tube negative pressure underwater pile foundation with hydraulically driven pile stabilizing plates, characterized in that: The invention comprises an inner pile cylinder (2), an outer pile cylinder (1), a gear structure and a hydraulic structure; the inner pile cylinder (2) is arranged on the inner side of the outer pile cylinder (1), and the inner pile cylinder (2) is provided with a gear structure and a hydraulic structure; the driven structure in the gear structure is arranged at the input end of the hydraulic structure, and the gear structure works so that the output end of the hydraulic structure works to achieve the stabilization or recovery of the pile foundation; the gear structure comprises a gear (29) and a rack transmission (28); the rack transmission (28) comprises a rack (281), an upper limiter (282), a lower limiter (283), a transmission circular shaft (284) and a sealing oil plug (285); the rack (281 ) are respectively provided with an upper limiter (282) and a lower limiter (283), the upper limiter (282) and the lower limiter (283) being used to prevent the rack (281) and the gear (29) from slipping off; a transmission shaft (284) is provided below the lower limiter (283); the gear (29) is meshed with the rack (281) on the rack transmission (28), the rack (281) is fixedly connected to the transmission shaft (284), a sealing oil plug (285) is provided at the lower end of the transmission shaft (284), the sealing oil plug (285) cooperates with the hydraulic pipe system (21) to squeeze the hydraulic oil; the hydraulic structure includes an anti-tilt stabilizing plate (24), an anti-sinking stabilizing plate (23), an oil tank (22) and a hydraulic pipe system (21); the main pipe of the hydraulic pipe system (21) is welded to the inner pile tube (2) through a partitioning protective plate (25); a rack transmission (28) in a gear structure is arranged in the main pipe of the hydraulic pipe system (21); a sealing oil plug (285) at the end of the rack transmission (28) squeezes the hydraulic oil in the main pipe of the hydraulic pipe system (21) to drive the anti-tilting stabilizing plate (24) and the anti-sinking stabilizing plate (23) on the oil tank (22) to work; the oil tank (22) is connected to a branch pipe in the hydraulic pipe system (21); the piston in the oil tank (22) is connected to the anti-tilting stabilizing plate (24) , an anti-sinking stabilizing plate (23); there are a plurality of oil grooves (22); the anti-tilting stabilizing plate (24) and the anti-sinking stabilizing plate (23) both extend out of the inner pile barrel (2); a water pump (12) and a control knob (13) are arranged on the outer barrel wall (11) of the outer pile barrel (1); the water pump (12) can rotate in both positive and negative directions, and is used to extract water from the inner part of the outer pile barrel (1) during installation and penetration, to generate penetration negative pressure, so that the pile foundation can be better penetrated, and is used to inject water into the outer pile barrel (1) during the process of disassembly and extraction, to generate extraction pressure for disassembly and recovery; the lower end of the outer barrel wall (11) is a conical structure; the inner pile barrel (2) is an inverted conical sealing structure.

2. The double-tube negative pressure underwater pile foundation of the hydraulically driven pile stabilizing plate according to claim 1 is characterized in that: Several anti-tilting stabilizing plates (24) form a "flower"-shaped structure; several anti-sinking stabilizing plates (23) form an inverted "flower"-shaped structure; the anti-sinking stabilizing plates (23) are close to the lower end of the inner pile tube (2).

3. The double-tube negative pressure underwater pile foundation of the hydraulically driven pile stabilizing plate according to claim 1 is characterized in that: The inner pile cylinder (2) and the outer pile cylinder (1) are connected via a reinforcing truss (3).

4. The installation method of the double-tube negative pressure underwater pile foundation of the hydraulically driven pile stabilizing plate according to any one of claims 1 to 3 is characterized in that: When the pile foundation is hoisted to the installation position, the water pump (12) continuously discharges water to the outside of the pile foundation until the pile foundation is completely penetrated; then, the gear (29) rotates counterclockwise, causing the rack drive (28) to move downward, thereby driving the hydraulic oil in the hydraulic pipe system (21) to enter the oil tank (22) to push the anti-sinking stabilizing plate (23) and the anti-tilting stabilizing plate (24) to fully extend, thereby completing the installation and stabilization of the pile foundation; When the pile foundation is finished serving, the gear (29) rotates clockwise, causing the rack drive (28) to move upward, thereby driving the hydraulic pipe system (21) to suck out the hydraulic oil in the oil tank (22), pulling the anti-sinking stabilizing plate (23) and the anti-tilting stabilizing plate (24) to fully retract; then the water pump (12) continuously injects water into the pile foundation until the pile foundation is completely pulled out, completing the recovery of the pile foundation.

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