Deepwater steel pipe pile cofferdam stabilizing device

Abstract

The utility model discloses a deepwater steel pipe pile cofferdam stabilizing device, and belongs to the technical field of cofferdam safety construction. Comprising an enclosing purlin, a plurality of steel casings and a plurality of pieces of I-shaped steel, the I-shaped steel comprises first I-shaped steel and second I-shaped steel, one end of the second I-shaped steel is fixedly connected to the enclosing purlin, and the other end of the second I-shaped steel and the two ends of the first I-shaped steel are fixedly connected with arc-shaped mounting plates; the arc-shaped mounting plates are fixedly connected to the outer surfaces of the steel casings, each arc-shaped mounting plate is provided with a positioning mechanism, and the steel casings which are not broken in pile foundation construction in the cofferdam and the enclosing purlins are connected into a whole in a welded connection mode, so that the overall stability of the deepwater steel pipe pile cofferdam can be improved, and the construction efficiency is improved. The disturbance of deepwater pressure, water flow and water level changes on the steel cofferdam is relieved, the investment of a large number of temporary supporting structures and inserting and driving equipment is saved, and time and construction cost are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of safe cofferdam construction, in particular to a deep-water steel pipe pile cofferdam stabilizing device. Background Art

[0002] As my country's bridge-building technology expands across major rivers, the safety and stability of bridge pile foundations during construction has become increasingly prominent. In recent years, to address the challenges of dry-span construction of deepwater cap foundations for long-span bridges, steel sheet pile cofferdams, double-thin-wall steel cofferdams, and steel pipe pile cofferdams have been widely developed and applied. However, these efforts have also led to frequent leakage and safety incidents. This is primarily due to the constant disturbance of the steel cofferdam structure by water pressure and tidal fluctuations, which pose significant construction challenges.

[0003] To this end, during the construction phase, a mechanical analysis of the entire process was carried out, and the stability of the structure was strengthened in the key links of caulking and concrete purlin construction. This plays an important role in increasing the integrity and anti-leakage properties of the structure, and is of great significance for ensuring the safety of subsequent underwater dry operations. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the existing technology, the utility model provides a deep-water steel pipe pile cofferdam stabilization device to solve the problem that the overall stability of the deep-water steel pipe pile cofferdam in the existing technology is low and the deep water pressure, water flow and water level changes cause great disturbance to the steel cofferdam.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A deepwater steel pipe pile cofferdam stabilization device includes a perimeter purlin, multiple steel casings, and multiple I-shaped steels. The I-shaped steels include a first I-shaped steel and a second I-shaped steel. One end of the second I-shaped steel is fixedly connected to the perimeter purlin. The other end of the second I-shaped steel and both ends of the first I-shaped steel are fixedly connected to arc-shaped mounting plates, and the arc-shaped mounting plates are fixedly connected to the outer surface of the steel casing. Each of the arc-shaped mounting plates is provided with a positioning mechanism.

[0007] The positioning mechanism includes a right-angle support plate fixedly connected to the outer surface of the arc-shaped mounting plate, and the upper surface of the right-angle support plate is in contact with the bottom of the I-beam. Two symmetrical positioning plates are provided on the upper surface of the right-angle support plate, and a driving component is installed on the right-angle support plate for driving the two positioning plates to move in opposite directions at the same time.

[0008] Preferably, the driving assembly includes two ear plates fixedly connected to the right-angle support plate, and threaded rods are rotatably installed on the sides of the two ear plates close to each other, and a knob is fixedly connected between the two threaded rods.

[0009] Preferably, the outer surfaces of the two threaded rods are threadedly connected to threaded plates, the upper surfaces of the two threaded plates are fixedly connected to sliders, the interior of the right-angle support plate is provided with a sliding groove for the sliders to slide horizontally, and the sides of the two sliders away from the two threaded plates are fixedly connected to the two positioning plates respectively.

[0010] Preferably, a reinforcement mechanism is provided on the arc-shaped mounting plate, and the reinforcement mechanism includes a right-angle reinforcement plate, the bottom surface of the right-angle reinforcement plate is in contact with the I-beam, one side surface of the right-angle reinforcement plate is in contact with the arc-shaped mounting plate, and a long hole is provided on one side surface of the right-angle reinforcement plate, and a first threaded hole adapted to the long hole is provided on the arc-shaped mounting plate.

[0011] Preferably, a rectangular column is fixedly connected to the upper surface of the right-angle support plate, a second threaded hole is opened inside the rectangular column, and a through hole compatible with the second threaded hole is opened on the right-angle reinforcement plate and the I-beam.

[0012] Compared with the prior art, the present invention provides a deepwater steel pipe pile cofferdam stabilization device with the following beneficial effects:

[0013] 1. The utility model connects the steel casing that has not been broken during the pile foundation construction in the cofferdam with the surrounding purlin by welding to form a whole. It not only increases the overall stability of the deep-water steel pipe pile cofferdam, reduces the disturbance of deep-water water pressure, water flow, and water level changes on the steel cofferdam, but also saves a lot of investment in temporary support structures and driving equipment, saving time and construction costs.

[0014] 2. The utility model provides a positioning mechanism, which can quickly position I-shaped steels of different types to a specified position when welding them, thereby effectively improving the welding efficiency of the I-shaped steels. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a structural diagram of the steel casing, the first I-shaped steel, the arc-shaped mounting plate, the positioning mechanism and the reinforcement mechanism of the utility model.

[0017] Figure 3 This is a schematic diagram of the connection between the steel casing and the arc-shaped mounting plate of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the arc-shaped mounting plate, positioning mechanism and rectangular column of the utility model.

[0019] In the picture:

[0020] 1. Purlin; 2. Steel casing; 3. First I-beam; 4. Arc-shaped mounting plate; 5. Right-angle support plate; 6. Ear plate; 7. Threaded rod; 8. Knob; 9. Threaded plate; 10. Slider; 11. Positioning plate; 12. Rectangular column; 13. Right-angle reinforcement plate; 14. Second I-beam. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1-4 A deepwater steel pipe pile cofferdam stabilization device includes a purlin 1, multiple steel casings 2 and multiple I-shaped steels, the I-shaped steels include a first I-shaped steel 3 and a second I-shaped steel 14, one end of the second I-shaped steel 14 is fixedly connected to the purlin 1, the other end of the second I-shaped steel 14 and both ends of the first I-shaped steel 3 are fixedly connected with an arc-shaped mounting plate 4, and the arc-shaped mounting plate 4 is fixedly connected to the outer surface of the steel casing 2, the second I-shaped steel 14 is located between the purlin 1 and the steel casing 2, the first I-shaped steel 3 is located between two adjacent steel casings 2, and the second I-shaped steel 14 and the purlin 1, the right-angle reinforcement plate 13 and the arc-shaped mounting plate 4, and the first I-shaped steel 3 and the arc-shaped mounting plate 4 are all connected by welding.

[0023] Each arc-shaped mounting plate 4 is provided with a positioning mechanism, which includes a right-angle support plate 5 fixedly connected to the outer surface of the arc-shaped mounting plate 4, and the upper surface of the right-angle support plate 5 is in contact with the bottom of the I-shaped steel. The upper surface of the right-angle support plate 5 is provided with two symmetrical positioning plates 11. When the I-shaped steel is welded, the right-angle support plate 5 can support the I-shaped steel. The two positioning plates 11 can be inserted into the inside of the I-shaped steel and in contact with the two side walls of the I-shaped steel to position the I-shaped steel.

[0024] A driving assembly for driving the two positioning plates 11 to move simultaneously in opposite directions is installed on the right-angle support plate 5. The driving assembly includes two ear plates 6 fixedly connected to the right-angle support plate 5. The two ear plates 6 are rotatably installed on the sides close to each other. A knob 8 is fixedly connected between the two threaded rods 7. The threads set on the two threaded rods 7 are in opposite directions. When the knob 8 is turned, the two threaded rods 7 can be driven to rotate simultaneously.

[0025] The outer surfaces of the two threaded rods 7 are threadedly connected to threaded plates 9, and the upper surfaces of the two threaded plates 9 are fixedly connected to sliders 10. The interior of the right-angle support plate 5 is provided with a sliding groove for the sliders 10 to slide horizontally. The two sliders 10 are fixedly connected to the two positioning plates 11 on one side away from the two threaded plates 9. The simultaneous rotation of the two threaded rods 7 can drive the two threaded plates 9 to move horizontally in opposite directions at the same time. The movement of the threaded plate 9 can drive the sliders 10 and the positioning plates 11 to move accordingly, so that the distance between the two positioning plates 11 can be adjusted, and the two positioning plates 11 can be used to position I-beams of different models.

[0026] The arc-shaped mounting plate 4 is provided with a reinforcement mechanism, which includes a right-angle reinforcement plate 13, the bottom surface of the right-angle reinforcement plate 13 is in contact with the I-shaped steel, and the arc-shaped mounting plate 4 on one side of the right-angle reinforcement plate 13 is in contact with the, and a long strip hole is provided on one side surface of the right-angle reinforcement plate 13, and a first threaded hole adapted to the long strip hole is provided on the arc-shaped mounting plate 4, and a rectangular column 12 is fixedly connected to the upper surface of the right-angle support plate 5, and a second threaded hole is provided inside the rectangular column 12, and a through hole adapted to the second threaded hole is provided on the right-angle reinforcement plate 13 and the I-shaped steel. After the right-angle reinforcement plate 13 is pressed tightly against the I-shaped steel, one of the external screws is passed through the through hole and tightened in the second threaded hole, and then another external screw is passed through the long strip hole and tightened on the arc-shaped mounting plate 4, the I-shaped steel can be reinforced, thereby improving the connection stability between the I-shaped steel and the arc-shaped mounting plate 4.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A deepwater steel pipe pile cofferdam stabilization device, comprising a cofferdam purlin (1), a plurality of steel casings (2) and a plurality of I-shaped steels, characterized in that: The I-shaped steel comprises a first I-shaped steel (3) and a second I-shaped steel (14), one end of the second I-shaped steel (14) is fixedly connected to the purlin (1), the other end of the second I-shaped steel (14) and both ends of the first I-shaped steel (3) are fixedly connected to an arc-shaped mounting plate (4), and the arc-shaped mounting plate (4) is fixedly connected to the outer surface of the steel casing (2), and each of the arc-shaped mounting plates (4) is provided with a positioning mechanism; The positioning mechanism comprises a right-angle support plate (5) fixedly connected to the outer surface of the arc-shaped mounting plate (4), and the upper surface of the right-angle support plate (5) contacts the bottom of the I-shaped steel, and two symmetrical positioning plates (11) are provided on the upper surface of the right-angle support plate (5), and a driving assembly for driving the two positioning plates (11) to move simultaneously in opposite directions is installed on the right-angle support plate (5).

2. A deepwater steel pipe pile cofferdam stabilization device according to claim 1, characterized in that: The driving assembly comprises two ear plates (6) fixedly connected to a right-angle support plate (5); a threaded rod (7) is rotatably mounted on a side of the two ear plates (6) close to each other; and a knob (8) is fixedly connected between the two threaded rods (7).

3. A deepwater steel pipe pile cofferdam stabilization device according to claim 2, characterized in that: The outer surfaces of the two threaded rods (7) are both threadedly connected to threaded plates (9), the upper surfaces of the two threaded plates (9) are both fixedly connected to sliders (10), the interior of the right-angle support plate (5) is provided with a sliding groove for the sliders (10) to slide horizontally, and the sides of the two sliders (10) away from the two threaded plates (9) are respectively fixedly connected to two positioning plates (11).

4. The deepwater steel pipe pile cofferdam stabilization device according to claim 1, characterized in that: The arc-shaped mounting plate (4) is provided with a reinforcement mechanism, the reinforcement mechanism comprising a right-angle reinforcement plate (13), the bottom surface of the right-angle reinforcement plate (13) is in contact with the I-shaped steel, one side surface of the right-angle reinforcement plate (13) is in contact with the arc-shaped mounting plate (4), and a long hole is provided on one side surface of the right-angle reinforcement plate (13), and a first threaded hole adapted to the long hole is provided on the arc-shaped mounting plate (4).

5. The deepwater steel pipe pile cofferdam stabilization device according to claim 4, characterized in that: A rectangular column (12) is fixedly connected to the upper surface of the right-angle support plate (5), a second threaded hole is provided inside the rectangular column (12), and a through hole matching the second threaded hole is provided on the right-angle reinforcement plate (13) and the I-shaped steel.

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