Tubular pile construction device and construction method thereof

Abstract

The invention relates to the technical field of building construction, in particular to a tubular pile construction device which comprises a pile machine body and a tubular pile, the pile machine body is provided with a mounting column, the mounting column is provided with a static pressure mechanism and a crushing mechanism, the crushing mechanism is arranged above the static pressure mechanism, and the static pressure mechanism comprises a power component. The power component is connected with a clamping mechanism, the tubular pile is connected with the clamping mechanism, the crushing mechanism is a down-the-hole hammer, and the down-the-hole hammer can extend into the tubular pile. The crushing mechanism is additionally arranged on the pile machine for static pressure construction, boulders or hard rock strata encountered in the static pressure process are crushed, the original advantages of low noise, low vibration and low dust pollution of tubular pile static pressure method construction are kept, and meanwhile, the application range of tubular pile static pressure construction is wider.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a pipe pile construction device and a construction method thereof. Background Art

[0002] Prestressed pipe piles are a type of prefabricated piles commonly used in construction. They have the characteristics of high single pile bearing capacity, low unit cost, fast construction speed, and reliable pile quality. Generally, they are suitable for soft soil, clay, silt, sandy soil, and fully weathered rock mass, and are widely used in construction, railways, highways, bridges, ports, docks and other projects. Prestressed pipe pile construction often uses the static pressure method to slowly press the prefabricated piles into the soil. This method completely avoids the vibration, noise and pollution caused by hammering piles. However, when encountering hard rock layers or boulders during the pile sinking process, the pile sinking speed will be slow, the pile cannot be sunk, or the pile sinking depth does not meet the design requirements.

[0003] Therefore, a technical solution is currently needed to solve the technical problem that when constructing pipe piles by static pressure method, when encountering hard rock layers or boulders, the pipe piles will be difficult to sink or the depth of the lower layer cannot meet the design requirements. Summary of the invention

[0004] The present invention aims to overcome the problem that when constructing pipe piles by static pressure method, when encountering hard rock layer or isolated rock, the pipe piles will be difficult to sink or the depth of the lower layer cannot meet the design requirements, and provide a pipe pile construction device and a construction method thereof.

[0005] The present invention provides a pipe pile construction device, comprising a pile driver body and a pipe pile, wherein the pile driver body is provided with a mounting column, the mounting column is provided with a static pressure mechanism and a crushing mechanism, the crushing mechanism is arranged above the static pressure mechanism, the static pressure mechanism comprises a power component, the power component is connected with a clamping mechanism, the pipe pile is connected with the clamping mechanism, the crushing mechanism is a down-the-hole hammer, and the down-the-hole hammer can extend into the pipe pile.

[0006] The present invention provides a pipe pile construction device, which is connected to the pipe pile through a clamping mechanism when in use, and the clamping mechanism and the pipe pile connected to the clamping mechanism are driven by a power component to perform a sinking operation in the soil layer. When the pipe pile encounters a hard rock layer or a solitary rock during the sinking process, a down-the-hole hammer inserted into the pipe pile contacts the rock layer or the solitary rock, and the down-the-hole hammer is used to break the rock layer, and then the pipe pile is further driven to sink through the power component, or the power mechanism drives the pipe pile to be statically pressed, and the rock layer is broken by the down-the-hole hammer at the same time, so as to improve the efficiency of pressing down the pipe pile. The present application broadens the application scope of the static pressure method while maintaining the original advantages of the static pressure method.

[0007] Preferably, the power component is a hydraulic mechanism, and the hydraulic mechanism is used to drive the pipe pile to move along the height direction of the installation column.

[0008] The hydraulic mechanism has the advantages of simple structure, reliable operation, smooth running, large load bearing capacity, high operating accuracy, etc. It can realize the slow sinking of pipe piles without generating adverse effects such as noise and dust.

[0009] Preferably, the clamping mechanism includes a clamping assembly, which includes a first arc plate and a second arc plate, the first arc plate and the second arc plate are hinged on one side and detachably connected on the other side, the first arc plate and the second arc plate enclose a clamping interval, and the first arc plate is connected to the power component.

[0010] The first arc plate and the second arc plate form a clamping assembly that can be opened and closed. After the pipe pile enters the clamping interval, the first arc plate and the second arc plate are connected and fixed to achieve the clamping of the pipe pile, which facilitates the movement of the pipe pile and the stability during the static pressure construction process.

[0011] Preferably, the first arc-shaped plate and the second arc-shaped plate are both provided with connecting plates on their sides, the connecting plates are provided with threaded through holes, and the two connecting plates are connected by bolts.

[0012] A detachable connection is achieved between one side of the first arc plate and the second arc plate. After the pipe pile is inserted into the first arc plate, the second arc plate is rotated, and the connecting plates of the first arc plate and the second arc plate are connected by bolts to achieve clamping of the pipe pile.

[0013] Preferably, the clamping mechanism further comprises a pressure plate, the pressure plate is connected to the power component, the pressure plate is arranged above the clamping section, the pressure plate is provided with an avoidance hole, and the down-the-hole hammer extends into the pipe pile through the avoidance hole.

[0014] By providing a pressure plate with an avoidance hole, it abuts against the end of the pipe pile when in use, and the down-the-hole hammer extends into the pipe pile through the avoidance hole on the pressure plate, and then extends into the rock layer or the isolated rock to perform crushing. In this scheme, the clamping mechanism presses down the pipe pile from the end of the pipe pile, making the pipe pile easier to sink. Compared with the operation of clamping the side wall of the pipe pile to press down, this scheme does not need to apply excessive clamping force to the pipe pile, thereby avoiding the problem of damage to the pipe pile caused by the pressing process.

[0015] Preferably, the pipe pile is provided with a plurality of grouting pipes, which are arranged along the height direction of the pipe pile and pass through the upper and lower ends of the pipe pile.

[0016] When the pipe pile encounters a softer soil layer during its sinking process, which is not conducive to the stability of the position of the pipe pile in the soil layer, grouting can be injected into the soil layer through a grouting pipe. The slurry enters the soil layer through the grouting pipe and has a coagulation and strengthening effect on the soil layer.

[0017] Preferably, a pile shoe is provided at the bottom end of the pipe pile, the pile shoe is arranged in a truncated cone shape, and the small end of the pile shoe is arranged away from the pipe pile.

[0018] Providing a truncated cone-shaped pile shoe at the bottom of the pipe pile can reduce the resistance encountered during the sinking process of the pipe pile, reduce the burden on the equipment, and reduce energy consumption.

[0019] Preferably, the pile shoe is provided with a plurality of drainage holes, and the drainage holes are connected to the grouting pipes in a one-to-one correspondence.

[0020] The slurry entering the grouting pipe can enter the current soil layer through the pile shoe, ensuring the accuracy and effectiveness of the grouting operation.

[0021] Preferably, the pipe pile comprises a plurality of pipe pile segments, and the plurality of pipe pile segments are connected in sequence.

[0022] The pipe piles are composed of multiple pipe pile segments, which are pressed into the stratum in sections during the construction process, which can reduce the difficulty of construction, manufacturing, transportation and storage of the pipe piles.

[0023] A pipe pile construction method, using the pipe pile construction device as described above, comprises the following steps: S1. Connect the pipe pile to the clamping mechanism of the pile driver, and extend the down-the-hole hammer into the pipe pile; S2, driving the clamping mechanism and the pipe pile downward through the power component, pressing the pipe pile into the pre-installation position; S3, insert the down-the-hole hammer into the lower end of the pipe pile, and use the down-the-hole hammer to break the hard rock layer or isolated rock; S4. The pipe pile continues to be pressed down until it reaches the predetermined depth.

[0024] The present invention discloses a pipe pile construction method, which comprises the following steps: running a pile driver body to a construction position, clamping the pipe pile by a clamping mechanism, and using a power component connected to the clamping mechanism to drive the pipe pile to move downward and press it into a pre-installation position; when the pipe pile touches a hard rock layer or a solitary rock during the pressing process, a down-the-hole hammer connected to the upper part of the clamping mechanism is extended into the pipe pile and extended to the lower end of the pipe pile to crush the hard rock layer or the solitary rock, and then the pipe pile is pressed downward after the crushing.

[0025] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a pipe pile construction device, which adds a crushing mechanism to the pile driver of static pressure construction to crush isolated rocks or hard rock layers encountered during the static pressure construction, so that the scope of application of pipe pile static pressure construction is wider; 2. The present invention provides a pipe pile construction device, which can simultaneously break the rock layer at the end of the pipe pile by a down-the-hole hammer during the process of the power mechanism driving the pipe pile to press down, so as to improve the static pressure efficiency of the pipe pile; 3. The present invention provides a pipe pile construction device, in which the crushing process is completed inside the pipe pile, thereby maintaining the original advantages of the pipe pile static pressure construction method, such as low noise, low vibration and less dust pollution. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 It is a structural schematic diagram of a pipe pile construction device of the present invention; Figure 2 is a schematic structural diagram of the clamping assembly of the present invention; Figure 3 It is a structural schematic diagram of the pressing plate of the present invention; Figure 4 It is a schematic diagram of the structure of the pipe pile of the present invention; Figure 5 is a schematic diagram of the structure of the pile shoe of the present invention; Markings in the figure: 1-pile driver body, 11-installation, 2-pile, 201-pile segment, 21-grouting pipe, 22-pile shoe, 221-drainage hole, 23-connecting seat, 231-connecting hole, 3-static pressure mechanism, 31-power component, 32-clamping mechanism, 321-clamping assembly, 3211-first arc plate, 3212-second arc plate, 3213-connecting plate, 3214-bolt, 322-pressure plate, 3221-avoidance hole. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0028] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or are the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.

[0030] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0031] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0032] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0033] Example 1 like Figure 1 and Figure 2 As shown, a pipe pile construction device includes a pile driver body 1 and a pipe pile 2. The pile driver body 1 is provided with a mounting column 11. The mounting column 11 is provided with a static pressure mechanism 3 and a crushing mechanism 4. The crushing mechanism 4 is arranged above the static pressure mechanism 3. The static pressure mechanism 3 includes a power component 31. The power component 31 is connected with a clamping mechanism 32. The pipe pile 2 is connected with the clamping mechanism 32. The crushing mechanism 4 is a down-the-hole hammer, which can extend into the pipe pile 2.

[0034] When in use, it is connected to the pipe pile 2 through the clamping mechanism 32, and the power component 31 drives the clamping mechanism 32 and the pipe pile 2 connected to the clamping mechanism 32 to sink in the soil layer. When the pipe pile 2 encounters hard rock layers or boulders during the sinking process, the down-the-hole hammer inserted into the pipe pile 2 contacts the rock layers or boulders, and the down-the-hole hammer is used to break them, and then the power component 31 continues to drive the pipe pile 2 to sink. This application broadens the scope of application of the static pressure method while maintaining the original advantages of the static pressure method.

[0035] Pipe pile 2: Pipe pile 2 includes a plurality of pipe pile segments 201, which are sequentially connected to form pipe pile 2. Metal connecting seats 23 are respectively provided at both ends of the pipe pile segment 201. Two pipe pile segments 201 are connected by welding during static pressure.

[0036] Power component 31: The power component 31 is a hydraulic mechanism, which is used to drive the pipe pile 2 to move along the height direction of the installation column 11. The hydraulic mechanism has the advantages of simple structure, reliable operation, smooth operation, large load bearing capacity, high operation accuracy, etc. It can realize the slow sinking of the pipe pile without generating adverse effects such as noise and dust.

[0037] Clamping mechanism 32: The clamping mechanism 32 includes a clamping assembly 321, which includes a first arc plate 3211 and a second arc plate 3212. The first arc plate 3211 and the second arc plate 3212 are hinged on one side, and the first arc plate 3211 and the second arc plate 3212 have a connecting plate 3213 on the other side. The connecting plate 3213 is provided with a threaded through hole, and the two connecting plates 3213 are connected by bolts 3214. The first arc plate 3211 and the second arc plate 3212 enclose a clamping interval. The first arc plate 3211 is connected to the power component 31. The first arc plate 3211 and the second arc plate 3212 form a clamping assembly 321 that can be opened and closed. After the pipe pile 2 enters the clamping interval, the first arc plate 3211 and the second arc plate 3212 are connected and fixed, so as to achieve clamping of the pipe pile 2, facilitate the movement of the pipe pile 2 and stabilize it during static pressure construction.

[0038] Example 2 like Figure 1 and Figure 3 As shown, in this embodiment, the difference from Embodiment 1 is that the clamping mechanism 32 also includes a pressure plate 322, the pressure plate 322 is connected to the power component 31, the pressure plate 322 is arranged above the clamping interval, the pressure plate 322 is provided with an avoidance hole 3221, and the down-the-hole hammer extends into the pipe pile 2 through the avoidance hole 3221.

[0039] In this embodiment, a pressure plate 322 with an avoidance hole 3221 is provided, which abuts against the end of the pipe pile 2 when in use. The down-the-hole hammer extends into the pipe pile 2 through the avoidance hole 3221 on the pressure plate 322, and then extends into the rock layer or the isolated rock to perform a crushing operation. In this solution, the clamping mechanism 32 presses the pipe pile 2 from the end of the pipe pile 2, so that the pipe pile 2 is easier to sink. Compared with the operation of clamping the side wall of the pipe pile 2 to press down, this solution does not need to apply excessive clamping force to the pipe pile 2, thereby avoiding damage to the pipe pile 2 caused by the pressing process.

[0040] Example 3 like Figure 1 and Figure 5 As shown, the present embodiment is different from the embodiment 1 in that the pipe pile 2 is provided with a plurality of grouting pipes 21 , and the grouting pipes 21 are arranged along the height direction of the pipe pile 2 and pass through the upper and lower ends of the pipe pile 2 .

[0041] In this embodiment, when the pipe pile 2 encounters a softer soil layer during the sinking process, which is not conducive to the stability of the position of the pipe pile 2 in the soil layer, grouting can be injected into the soil layer through the grouting pipe 21. The slurry enters the soil layer through the grouting pipe 21, which has a coagulation and strengthening effect on the soil layer.

[0042] Furthermore, a connecting hole 231 is provided on the connecting seat 23 corresponding to the grouting pipe 21, and the inner diameter of the connecting hole 231 is adapted to the outer diameter of the grouting pipe 21. At one end of the pipe pile segment 201, the grouting pipe 21 extends out of the connecting hole 231, and at the other end of the pipe pile segment 201, the grouting pipe 21 does not enter the connecting hole 231. When two adjacent pipe pile segments 201 are connected, the grouting pipe 21 of the upper pipe pile segment 201 is inserted into the connecting hole 231 of the connecting seat 23 at the end of the lower pipe pile segment 201, thereby playing a positioning role in the connection between the two adjacent pipe pile segments 201 and ensuring that the slurry can pass smoothly.

[0043] Example 4 like Figure 1 , Figure 4 and Figure 5 As shown, the present embodiment is different from the embodiment 3 in that a pile shoe 22 is provided at the bottom end of the pipe pile 2, the pile shoe 22 is configured to be truncated cone-shaped, and the small end of the pile shoe 22 is configured to be far away from the pipe pile 2.

[0044] In this embodiment, a truncated cone-shaped pile shoe 22 is provided at the bottom of the pipe pile 2, which can reduce the resistance encountered by the pipe pile 2 during the sinking process, reduce the burden on the equipment, and reduce energy consumption.

[0045] Furthermore, the pile shoe 22 is provided with a plurality of drainage holes 221, and the drainage holes 221 are connected to the grouting pipes 21 one by one, so that the slurry entering the grouting pipes 21 can enter the current soil layer through the pile shoe 22, thereby ensuring the accuracy and effectiveness of the grouting operation.

[0046] Example 5 like Figure 1 and Figure 2 As shown, this embodiment provides a pipe pile construction method, using a pipe pile construction device as described in any one of embodiments 1-4, including the following steps: S1, connecting the pipe pile 2 to the clamping mechanism of the pile driver body 1, and inserting the down-the-hole hammer into the pipe pile 2; S2, driving the clamping mechanism 32 and the pipe pile 2 downward by the power component 31, pressing the pipe pile 2 into the pre-installation position; S3, when the pipe pile 2 touches a hard rock layer or a solitary rock during the downward pressing process, a down-the-hole hammer is inserted into the lower end of the pipe pile 2 to break the hard rock layer or the solitary rock with the down-the-hole hammer; S4. The pipe pile 2 continues to be pressed down until it reaches a predetermined depth.

[0047] The present invention discloses a pipe pile construction method, which comprises the following steps: running a pile driver body to a construction position, clamping the pipe pile by a clamping mechanism, and using a power component connected to the clamping mechanism to drive the pipe pile to move downward and press it into a pre-installation position; when the pipe pile touches a hard rock layer or a solitary rock during the pressing process, a down-the-hole hammer connected to the upper part of the clamping mechanism is extended into the pipe pile and extended to the lower end of the pipe pile to crush the hard rock layer or the solitary rock, and then the pipe pile is pressed downward after the crushing.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipe pile construction device, characterized in that: The invention comprises a pile driver body (1) and a pipe pile (2), wherein the pile driver body (1) is provided with a mounting column (11), the mounting column (11) is provided with a static pressure mechanism (3) and a crushing mechanism (4), the crushing mechanism (4) is arranged above the static pressure mechanism (3), the static pressure mechanism (3) comprises a power component (31), the power component (31) is connected to a clamping mechanism (32), the pipe pile (2) is connected to the clamping mechanism (32), and the crushing mechanism (4) is a down-the-hole hammer, which can extend into the pipe pile (2).

2. A pipe pile construction device according to claim 1, characterized in that: The power component (31) is a hydraulic mechanism, and the hydraulic mechanism is used to drive the pipe pile (2) to move along the height direction of the installation column (11).

3. A pipe pile construction device according to claim 1, characterized in that: The clamping mechanism (32) comprises a clamping assembly (321), wherein the clamping assembly (321) comprises a first arc-shaped plate (3211) and a second arc-shaped plate (3212), wherein the first arc-shaped plate (3211) and the second arc-shaped plate (3212) are hinged on one side and detachably connected on the other side, wherein the first arc-shaped plate (3211) and the second arc-shaped plate (3212) enclose a clamping interval, and the first arc-shaped plate (3211) is connected to the power component (31).

4. A pipe pile construction device according to claim 3, characterized in that: The first arc-shaped plate (3211) and the second arc-shaped plate (3212) are both provided with connecting plates (3213) on their sides, the connecting plates (3213) being provided with threaded through holes, and the two connecting plates (3213) are connected by bolts (3214).

5. A pipe pile construction device according to claim 3, characterized in that: The clamping mechanism (32) further comprises a pressing plate (322), the pressing plate (322) being connected to the power component (31), the pressing plate (322) being arranged above the clamping section, the pressing plate (322) being provided with an avoidance hole (3221), and the down-the-hole hammer extending into the pipe pile (2) through the avoidance hole (3221).

6. A pipe pile construction device according to claim 1, characterized in that: The pipe pile (2) is provided with a plurality of grouting pipes (21), wherein the grouting pipes (21) are arranged along the height direction of the pipe pile (2) and penetrate the upper and lower ends of the pipe pile (2).

7. A pipe pile construction device according to claim 6, characterized in that: A pile shoe (22) is provided at the bottom end of the pipe pile (2); the pile shoe (22) is arranged in a truncated cone shape, and the small end of the pile shoe (22) is arranged away from the pipe pile (2).

8. A pipe pile construction device according to claim 7, characterized in that: The pile shoe (22) is provided with a plurality of drainage holes (221), and the drainage holes (221) are connected to the grouting pipes (21) in a one-to-one correspondence.

9. A pipe pile construction device according to any one of claims 1 to 8, characterized in that: The pipe pile (2) comprises a plurality of pipe pile segments (201), and the plurality of pipe pile segments (201) are connected in sequence.

10. A pipe pile construction method, using a pipe pile construction device as claimed in any one of claims 1 to 8, comprising the following steps: S1, connecting the pipe pile (2) to the clamping mechanism (32) of the pile driver body (1), and inserting the down-the-hole hammer into the pipe pile (2); S2, driving the clamping mechanism (32) and the pipe pile (2) to move downwards through the power component (31), and pressing the pipe pile (2) into the pre-installation position; S3, inserting a down-the-hole hammer into the lower end of the pipe pile (2), and using the down-the-hole hammer to break the hard rock layer or isolated rock; S4. The pipe pile (2) continues to be pressed downward until it reaches a predetermined depth.

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