Guide device for driving steel pipe pile cofferdam
By designing a driving guide device for the construction of steel pipe pile cofferdams, the problem of inaccurate positions of steel pipe piles is solved, the uniformity of the construction line and the smoothness of later installation are achieved, reducing costs and time.
Patent Information
- Application Number
- CN202420088120.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-15
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-01-15
AI Technical Summary
During the construction of the inland double steel pipe pile cofferdam, the existing technology is difficult to ensure the accuracy of the position of the steel pipe piles, resulting in uneven construction line shapes, increasing the difficulty and safety risks of subsequent installation. At the same time, the installation of the guide frame increases the cost and time.
A steel pipe pile cofferdam construction guide device is designed, including multiple rows of steel pipe piles, channel steel, I-beams and bamboo curtains, which are fixedly connected through a hand chain hoist and tightened and fixed with a wire rope to ensure the safety of the steel pipe piles. Even spacing and beautiful lines.
It effectively improves the accuracy of the construction line shape of the steel pipe pile cofferdam, reduces the linear shape error of the same row of steel pipe piles, ensures the straightness of the later installation of the steel cofferdam and the uniform stress of the backfill construction, and reduces the Project cost and job time.
Smart Images
Figure CN222375414U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel pipe pile cofferdam construction, in particular to a steel pipe pile cofferdam injection guiding device. Background Art
[0002] At present, in the construction process of double steel pipe pile cofferdams in general inland rivers, guide frames are rarely used. The line shape of piling is simply controlled by pulling ropes and lines. This method can only ensure that the insertion position of the steel pipe piles is roughly accurate. The position of the steel pipe piles is very likely to have a deviation of 5 to 10 cm, and finally the overall finished surface forms a wavy line shape. This has caused great trouble for the subsequent installation of steel purlins. When constructing in slightly larger inland river basins, there will be great safety hazards in the weir body at this time. After backfilling the soil, some steel wire ropes will be unevenly stressed and broken. If a standardized guide frame is used, it is necessary to cooperate with the installation and construction process of the guide frame, which increases the operation cost and operation time. At the same time, the installation of the guide frame requires the cooperation of ships and lifting equipment, which increases the project cost.
[0003] For this purpose, we have developed a steel pipe pile cofferdam injection guiding device to solve the above problems. Utility Model Content
[0004] The utility model aims to provide a steel pipe pile cofferdam injection guiding device in order to overcome the deficiencies of the prior art, which has the advantages of improving accuracy, reducing errors, facilitating operation, and increasing service life.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a steel pipe pile cofferdam injection guiding device, comprising a plurality of rows of steel pipe piles, each row of the steel pipe piles is abutted against a channel steel at the middle position, the two ends of the channel steel are respectively fixedly connected to an I-beam, the I-beam and the channel steel are respectively fixedly connected to the top of the steel pipe piles by a hand winch, the two rows of the channel steels are tightened and fixed by steel wire ropes, the distance between each row of adjacent steel pipe piles is L, bamboo curtain pieces are staggered between the two rows of steel pipe piles, the bamboo curtain pieces are press-fitted with geotextile on the side away from the steel pipe piles, and the top position of the steel pipe piles is fixedly connected to H-shaped steel.
[0006] Preferably, the channel steel is provided with a row of through holes, the steel wire ropes are passed through the through holes, and the steel wire ropes are wrapped around two rows of corresponding steel pipe piles.
[0007] Preferably, in order to improve the strength of the steel pipe pile, the outer diameter of the steel pipe pile is 33 mm to 42.6 mm, and the wall thickness is 8 mm.
[0008] Preferably, in order to improve the linear accuracy of the steel pipe pile, the channel steel is 20a channel steel or 20b channel steel.
[0009] Preferably, in order to improve the uniformity of force, each row of adjacent steel pipe piles is connected by wooden planks, and the total width of the wooden planks is equal to the distance L.
[0010] Preferably, the distance L is in the range of 50cm≤L≤70cm.
[0011] Preferably, the specification of the H-shaped steel is H300×300×12×12.
[0012] Preferably, the specification of the steel wire rope is 2-Φ12.7mm.
[0013] Preferably, in order to improve the inner strength of the steel pipe pile, the geotextile is filled with clay, and the overlap length of the geotextile is greater than or equal to 15 cm.
[0014] Preferably, in order to improve the peripheral strength of the steel pipe piles, earth bags are filled around the steel pipe piles, and the filling length of the earth bags is not less than 6 m.
[0015] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:
[0016] 1. It can effectively ensure the accuracy of the construction line of the steel pipe pile cofferdam and reduce the error of the straight line of the steel pipe piles in the same row. It ensures that the spacing between the steel pipe piles is uniform and the line is beautiful.
[0017] 2. In addition to being used as a positioning guide frame, the I-beam can also be used as a temporary working surface for construction workers and become a simple water working platform.
[0018] 3. It ensures the straightness of the later installation of the steel purlin, which helps to ensure that after the later cofferdam backfill construction is completed, the force on the entire section is uniform, and the tensioning wire rope or the brace will not be excessively stressed locally due to the non-fitting installation of the purlin, thereby improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is the cross-sectional view of the steel pipe pile cofferdam of the utility model.
[0020] Figure 2 For this utility model Figure 1 Schematic diagram of the structure at aa in the figure.
[0021] Figure 3 For this utility model Figure 2 Schematic diagram of the structure at bb in the middle.
[0022] Figure 4 It is a left view of the steel pipe pile cofferdam injection guiding device described in the utility model.
[0023] Figure 5 It is a top view of the steel pipe pile cofferdam injection guiding device described in the utility model. DETAILED DESCRIPTION
[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0025] Figures 1 to 5 A steel pipe pile cofferdam injection guiding device is disclosed, comprising a plurality of rows of steel pipe piles 3, each row of steel pipe piles 3 abutting against a channel steel 4 at the middle position, both ends of the channel steel 4 being fixedly connected to an I-beam 1, the I-beam 1 and the channel steel 4 being fixedly connected to the top of the steel pipe piles 3 respectively by a hand winch 2, the two rows of channel steels 4 being tightened and fixed by a steel wire rope 9, the specification of the steel wire rope 9 being a double-strand steel wire rope 2-Φ12.7mm.
[0026] The distance between each row of adjacent steel pipe piles 3 is L. Bamboo curtain pieces 8 are staggered between two rows of steel pipe piles 3. Geotextile 7 is crimped onto the side of the bamboo curtain pieces 8 away from the steel pipe piles 3. The top of the steel pipe piles 3 is fixedly connected to an H-shaped steel 6, and the specification of the H-shaped steel 6 is H300×300×12×12.
[0027] The channel steel 4 is provided with a row of through holes 41, through which steel wire ropes 9 are passed, and the steel wire ropes 9 are wound around two rows of corresponding steel pipe piles 3. The outer diameter of the steel pipe pile 3 is 33 mm to 42.6 mm, preferably 33.7 mm, 38 mm or 42.6 mm, and the wall thickness of the steel pipe pile 3 is 8 mm. The channel steel 4 is a 20a channel steel or a 20b channel steel, preferably a 20a channel steel.
[0028] In order to ensure uniform spacing of steel pipe piles in the same row, adjacent steel pipe piles 3 in each row are butted against each other by wooden squares 31, and the total width of wooden squares 31 is equal to the distance L, i.e., the spacing between adjacent steel pipe piles 3. The range of distance L is 50cm≤L≤70cm, and L is preferably 50cm, 60cm or 70cm.
[0029] In order to improve the internal and external strength of the steel pipe pile, the geotextile 7 is filled with clay, and the overlap length of the geotextile 7 is greater than or equal to 15 cm. The outer periphery of the steel pipe pile 3 is filled with earthbags 11, and the filling length of the earthbags 11 is not less than 6 m.
[0030] The steel pipe pile 3 and a guide steel pipe pile at the starting point are completed by means of a line (the distance between the two steel pipe piles is determined by the length of the I-beam on site), the I-beam 1 is transported to the position by the ship crane, and the I-beam is fixed to the starting steel pipe pile and the guide steel pipe pile by the hand winch 2. The steel pipe piles on both sides of the steel pipe pile are installed in the same way.
[0031] At this time, the I-beam can be used as a guide frame and a simple working surface for workers. After installing the wooden square 31 equal to the spacing of the steel pipe piles, two workers cooperate to straighten the position of the steel pipe piles, and after extending them between the two I-beams, they are driven close to the wooden square. The accuracy of the position of the steel pipe piles is ensured, and subsequent steel pipe piles are driven step by step according to the above steps. After completing one row, another row of steel pipe piles is driven according to the steps. Bamboo curtain pieces 8 are placed alternately on the inner walls of the two rows of steel pipe piles, and then geotextiles are laid and filled with clay. The outer periphery of the steel pipe piles is surrounded by earthbags 11.
[0032] The above are only specific application examples of the utility model, and do not constitute any limitation on the protection scope of the utility model. Any technical solution formed by equivalent transformation or equivalent replacement falls within the protection scope of the utility model.
Claims
1. A steel pipe pile cofferdam injection guiding device, characterized in that: It comprises a plurality of rows of steel pipe piles (3), wherein a channel steel (4) is abutted at the middle position of each row of steel pipe piles (3), and the two ends of the channel steel (4) are respectively fixedly connected to an I-beam (1), and the I-beam (1) and the channel steel (4) are respectively fixedly connected to the top of the steel pipe pile (3) by a hand winch (2), and the two rows of channel steels (4) are tightened and fixed by a steel wire rope (9), and the distance between each row of adjacent steel pipe piles (3) is L, and bamboo curtain sheets (8) are staggered between the two rows of steel pipe piles (3), and a geotextile (7) is pressed on the side of the bamboo curtain sheets (8) away from the steel pipe piles (3), and the top position of the steel pipe pile (3) is fixedly connected to an H-shaped steel (6).
2. The steel pipe pile cofferdam injection guiding device according to claim 1 is characterized in that: The channel steel (4) is provided with a row of through holes (41), the through holes (41) are penetrated by the steel wire ropes (9), and the steel wire ropes (9) are wound around two rows of corresponding steel pipe piles (3).
3. The steel pipe pile cofferdam injection guiding device according to claim 2 is characterized in that: The outer diameter of the steel pipe pile (3) is 33 mm to 42.6 mm, and the wall thickness is 8 mm.
4. The steel pipe pile cofferdam injection guiding device according to claim 2, characterized in that: The channel steel (4) is a 20a channel steel or a 20b channel steel.
5. The steel pipe pile cofferdam injection guiding device according to claim 2, characterized in that: Each row of adjacent steel pipe piles (3) is connected by wooden beams (31), and the total width of the wooden beams (31) is equal to the distance L.
6. The steel pipe pile cofferdam injection guiding device according to claim 5, characterized in that: The range of the distance L is 50cm≤L≤70cm.
7. The steel pipe pile cofferdam injection guiding device according to claim 2, characterized in that: The specification of the H-shaped steel (6) is H300×300×12×12.
8. The steel pipe pile cofferdam injection guiding device according to claim 2, characterized in that: The specification of the steel wire rope (9) is 2-Φ12.7mm.
9. The steel pipe pile cofferdam injection guiding device according to claim 2, characterized in that: The geotextile (7) is filled with clay, and the overlapping length of the geotextile (7) is greater than or equal to 15 cm.
10. The steel pipe pile cofferdam injection guiding device according to claim 2, characterized in that: The outer periphery of the steel pipe pile (3) is filled with earth bags (11), and the filling length of the earth bags (11) is not less than 6m.