Underwater steel pipe pile driving positioning method

Abstract

This invention relates to a method for underwater steel pipe pile installation and positioning. For pile foundations in exposed rock areas, the diameter of the installation hole is 300-600 mm larger than the pile diameter. A hole is first drilled in the rock using a drilling rig, and then the steel pipe pile is inserted. Concrete is then poured around the pile to anchor it to the rock. An embedded steel pipe frame that can be controlled from the water surface extends the effective control height of the steel pipe pile, and automatic hook release technology solves the problem of controllable underwater hook release. This invention can extend the steel pipe pile upwards above the water surface and effectively reflect the pile position, inclination, and elevation, achieving the goal of effectively controlling the construction quality of the steel pipe pile during high water levels.

Description

Technical Field

[0001] This invention relates to the field of pile foundation construction, and more specifically, to a method for positioning underwater steel pipe piles. Background Technology

[0002] Due to power generation requirements, the Three Gorges Reservoir begins impounding water in mid-to-late September each year, continuing until May of the following year, with the high water level period lasting for more than six months. During the high water level period, because the pile tops are underwater, the pile positions cannot be controlled, and the pile foundation cannot be constructed for more than half a year under normal construction conditions, thus delaying the construction schedule. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an underwater steel pipe pile planting and positioning method, which effectively reflects the pile position, inclination and elevation of the steel pipe pile, so as to effectively control the construction quality of the steel pipe pile during the high water level period.

[0004] The technical solution adopted by this invention to solve its technical problem is: to construct an underwater steel pipe pile planting and positioning method, including the following steps:

[0005] S1. A hollow steel pipe frame is fixed with steel pipes. Curved wheel hangers are set on the side of the steel pipe frame through curved wheel axles. There are six curved wheel hangers. The curved wheel hangers are connected by the steel pipe frame lifting ropes. The curved wheel hangers are connected to the steel pipe frame through curved wheel axles.

[0006] S2. Hooks are symmetrically installed on the outer side of the top of the steel pipe pile. A baffle is installed at the lower end of the hook. One end of the baffle is connected to a baffle rope. The other end of the baffle rope floats on the water surface through a control rope ring. The baffle rope controls the opening of the baffle.

[0007] S3. After the steel pipe frame is lifted by the crane, it is filled into the steel pipe pile. After the six curved wheel handles are fully inserted into the steel pipe pile, a person enters the steel pipe pile and uses a hammer to strike the curved wheel handles towards the tip of the steel pipe pile, so that the curved wheel handles tightly grip the inner wall of the steel pipe pile through friction. At this time, the top of the steel pipe frame lifting rope is connected to the top of the steel pipe frame.

[0008] S4. Use the main lifting rope to suspend the hook of the steel pipe pile. The upper part of the main lifting rope is connected with a spreader beam to keep the main lifting rope vertical when it is lifted. The length of the main lifting rope is greater than the exposed length of the steel pipe frame.

[0009] S5. After the steel pipe pile is placed vertically, it is lifted up and the vertical poles of the steel pipe frame that are exposed above the water surface are measured to control the plane position and elevation of the steel pipe column.

[0010] S6. After the steel pipe pile is in place, use wedge blocks to fill the gap between the steel pipe pile and the hole wall to fix the steel pipe pile. Then tighten the baffle rope to make the baffle flip upward. Then loosen the main hoisting rope to make the main hoisting rope brake and disengage from the hook. Then use a crane to lift the steel pipe frame hoisting rope and lift the steel pipe frame out. After lifting it out, pour concrete around the steel pipe pile.

[0011] According to the above scheme, the center of the steel pipe frame coincides with the center of the steel pipe pile.

[0012] According to the above scheme, the steel pipe frame is processed from steel pipes into a space truss structure, and the horizontal cross-section is an equilateral triangle.

[0013] According to the above scheme, the hook has a smooth curved shape, and the baffle has a limiting function.

[0014] According to the above scheme, the baffle pull rope is a nylon rope, and the baffle pull rope has a higher specific gravity than water.

[0015] The underwater steel pipe pile planting and positioning method of the present invention has the following beneficial effects:

[0016] The steel pipe guide frame developed in this invention can extend the steel pipe piles upwards out of the water surface and effectively reflect the pile position, inclination and elevation of the steel pipe piles, so as to effectively control the construction quality of steel pipe piles during high water levels. It temporarily extends the effective control length of the steel pipe piles and adopts automatic unhooking technology, which simplifies the construction process and improves the construction efficiency. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the locking state structure of the underwater steel pipe pile planting and positioning method of the present invention;

[0019] Figure 2 This is a schematic diagram of the unlocked state structure of the underwater steel pipe pile planting and positioning method of the present invention;

[0020] Figure 3 This is a schematic diagram of the horizontal cross-sectional structure of the underwater steel pipe pile installation of the present invention. Detailed Implementation

[0021] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0022] like Figure 1-3 As shown, the underwater steel pipe pile planting and positioning method of the present invention includes the following steps:

[0023] S1. Weld steel pipes to form a spatial steel pipe frame 3, and fix the curved wheel lifting handle 6 to the steel pipe frame 3 with the curved wheel axle 7, and connect the six curved wheel lifting handles 6 with the steel pipe frame lifting rope 5.

[0024] S2. Weld the hook 2, baffle 8 and control rope ring 9 to the outer wall of the steel pipe pile 1, and tie one end of the baffle pull rope 10 to the baffle 8. The other end of the baffle pull rope 10 passes through the control rope ring 9 and floats on the water surface with a float. The baffle pull rope 10 is a nylon rope and the specific gravity of the baffle pull rope 10 is slightly greater than that of water.

[0025] S3. Use a crane to lift the steel pipe frame 3 and fill it into the steel pipe pile 1. After the six curved wheel handles 6 are fully inserted into the steel pipe pile 1, a person enters the steel pipe pile 1 and uses a hammer to strike the curved wheel handles 6 towards the pile tip, so that the curved wheel handles 6 tightly grip the inner wall of the steel pipe pile 1 by friction. At this time, connect the upper end of the steel pipe frame lifting rope 5 to the top of the steel pipe frame 3.

[0026] S4. Use the main lifting rope 4 to suspend the hook 2 of the steel pipe pile 1. The upper part of the main lifting rope 4 is connected with a flat beam to keep the main lifting rope 4 vertical when it is lifted. The length of the main lifting rope 4 is greater than the exposed length of the steel pipe frame.

[0027] S5. After the steel pipe pile 1 is lifted vertically, the horizontal position and elevation of the steel pipe pile 1 are controlled by measuring the vertical pole of the steel pipe frame 3 that is exposed above the water surface using a measuring instrument.

[0028] S6. After the steel pipe pile 1 is in place, use 3 to 4 wedge blocks to fill the gap between the steel pipe pile 1 and the hole wall to temporarily fix the steel pipe pile 1. Then tighten the baffle rope 10 to make the baffle 8 flip upward. Then loosen the main hoisting rope 4 to make the main hoisting rope 4 brake and disengage from the hook 2. Then use a crane to lift the steel pipe frame 3 hoisting rope and lift the steel pipe frame out. After lifting out, the concrete around the pile can be poured.

[0029] This invention can be used for drilling and then planting piles during periods of high water levels. A steel pipe frame 3 temporarily fixed to the inner wall of the steel pipe pile 1 is used for positioning control. The steel pipe frame 3 is secured to the upper opening of the steel pipe pile 1 by a curved wheel handle 6 welded to it. During the entire process of planting the steel pipe pile 1, the steel pipe frame 3 is located above the water level for easy observation and control. The center of the steel pipe frame 3 coincides with the center of the steel pipe pile 1. Symmetrical hooks 2 are provided on the outer side of the top of the steel pipe pile 1. A sealing baffle 8 is provided at the lower opening of the hooks 2. The baffle 8 is controlled to open by a baffle pull rope 10. The steel pipe frame 3 is a spatial truss structure made of steel pipes, with a horizontal cross-section of an equilateral triangle. A curved wheel lifting handle 6 is installed on the steel pipe frame 3, connected to the steel pipe frame 3 via a curved wheel shaft 7. When the curved wheel lifting handle 6 is pressed down, it can tightly lock the steel pipe frame 3 onto the inner wall of the steel pipe pile. The steel pipe frame lifting rope 5 is connected to the lifting ring of the curved wheel shaft lifting handle 6. When lifting the steel pipe frame lifting rope 5, the curved wheel shaft lifting handle 6 rotates, disengaging the curved wheel from the inner wall of the steel pipe pile. Hooks 2 are symmetrically arranged on the outer side of the top of the steel pipe pile 1. The hooks 2 have a smooth curved shape, and a limit plate 8 with a limiting function is installed on the opening of the hook 2. A limit plate pull rope 10 is connected to the limit plate 8, passing through the control rope ring 9 and extending above the water surface. The main lifting rope 4 lifts the steel pipe pile 1 through the hooks 2.

[0030] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A method for positioning underwater steel pipe piles, characterized in that, Includes the following steps: S1. A hollow steel pipe frame (3) is fixed with steel pipes. The side of the steel pipe frame (3) is provided with a curved wheel hanger (6) through a curved wheel axle (7). There are six curved wheel hangers (6). The curved wheel hangers (6) are connected by a steel pipe frame lifting rope (5). The curved wheel hangers (6) are connected to the steel pipe frame (3) through the curved wheel axle (7). S2. A hook (2) is symmetrically arranged on the outer side of the top of the steel pipe pile (1). A baffle (8) is set at the lower opening of the hook (2). One end of the baffle (8) is connected to the baffle pull rope (10). The other end of the baffle pull rope (10) passes through the control rope ring (9) and floats on the water surface through the float. The baffle pull rope (10) controls the opening of the baffle (8). S3. After the steel pipe frame (3) is lifted by a crane, it is filled into the steel pipe pile (1). After the six curved wheel handles (6) are fully inserted into the steel pipe pile (1), a person enters the steel pipe pile (1) and uses a hammer to strike the curved wheel handles (6) towards the tip of the steel pipe pile (1) so that the curved wheel handles (6) bite the inner wall of the steel pipe pile (1) by friction. At this time, the top of the steel pipe frame lifting rope (5) is connected to the top of the steel pipe frame (3). S4. Use the main hoisting rope (4) to suspend the hook (2) of the steel pipe pile (1). The upper part of the main hoisting rope (4) is connected with a flat beam so that the main hoisting rope (4) remains vertical when it is lifted. The length of the main hoisting rope (4) is greater than the exposed length of the steel pipe frame (3). S5. After the steel pipe pile (1) is lifted vertically, the vertical pole of the steel pipe frame (3) that is exposed above the water surface is measured to control the plane position and elevation of the steel pipe pile (1). S6. After the steel pipe pile (1) is in place, use wedge blocks to fill the gap between the steel pipe pile (1) and the hole wall to fix the steel pipe pile. Then tighten the baffle rope (10) to make the baffle (8) flip upward. Then loosen the main hoisting rope (4) so ​​that the main hoisting rope (4) automatically disengages from the hook (2). Then use a crane to lift the steel pipe frame hoisting rope and lift the steel pipe frame (3) out. After lifting the steel pipe frame (3) out, pour the pile perimeter concrete on the outside of the steel pipe pile (1).

2. The underwater steel pipe pile planting and positioning method according to claim 1, characterized in that, The center of the steel pipe frame (3) coincides with the center of the steel pipe pile (1).

3. The underwater steel pipe pile planting and positioning method according to claim 1, characterized in that, The steel pipe frame (3) is made of steel pipes into a space truss structure, and its horizontal cross-section is an equilateral triangle.

4. The underwater steel pipe pile planting and positioning method according to claim 1, characterized in that, The hook (2) has a smooth curved shape, and the baffle (8) has a limiting function.

5. The underwater steel pipe pile planting and positioning method according to claim 1, characterized in that, The baffle pull rope (10) is a nylon rope, and the specific gravity of the baffle pull rope (10) is greater than that of water.

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