An external expansion arm grouting reinforcement device
By setting up grouting pipelines on the outer side wall of the suction caisson foundation and opening the outer expansion arm to spray cement slurry, the problem of low resistance to pull-out bearing capacity of the suction caisson foundation is solved, and the load bearing capacity is improved.
Patent Information
- Application Number
- CN202211362811.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-11-02
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2042-11-02
AI Technical Summary
The existing suction caisson foundation has low pull-resistant load capacity in the ocean, and the existing methods increase costs and are not economical, take a long time, and have no obvious results.
A grouting pipe is provided on the outer wall of the suction caisson foundation, and the outer expansion arm is driven by a servo electric cylinder to open and spray cement slurry to form a reinforcement to improve the bearing capacity.
Through the external arm filling cement slurry reinforcement device, the horizontal and vertical bearing capacity of the suction caisson foundation is improved, which is economical and simple to operate.
Smart Images
Figure CN116043819B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of cement slurry perfusion, and more specifically, to an external expansion arm perfusion cement slurry reinforcement device. Background Art
[0002] The suction caisson foundation is a new type of foundation form for deep - sea offshore platform structures, meeting the needs of wind turbine construction in the deep - sea area. Compared with traditional pile foundations, the suction caisson foundation has the advantages of convenient transportation and construction, short construction period, reusable, and low cost, and is increasingly used in ocean engineering. The stability of the foundation is the key factor determining whether the offshore platform can be used normally. The suction caisson foundation in deep - water offshore platforms mainly bears the uplift load transmitted from the wind and waves acting on the superstructure. Therefore, the vertical bearing capacity of the suction caisson foundation is mainly the uplift bearing capacity.
[0003] The uplift bearing capacity mainly depends on the friction between the wall of the suction caisson foundation and the soil and the self - weight of the suction caisson foundation. The existing suction caisson foundations have a low uplift bearing capacity in the ocean. Therefore, in the prior art, the uplift bearing capacity is improved from three aspects: 1. Increasing the size of the suction caisson foundation; 2. Conducting foundation reinforcement; 3. Increasing the self - weight of the suction caisson foundation. However, the first and the second methods are uneconomical, costly, time - consuming, and the effects are not obvious. The third method of increasing the self - weight of the suction caisson foundation requires a large amount of steel, undoubtedly increasing the cost and being uneconomical.
[0004] Aiming at the problems of low uplift bearing capacity of the suction caisson foundation in the prior art, high cost, uneconomical and time - consuming for improving the uplift bearing capacity, no effective solution has been proposed yet. Summary of the Invention
[0005] An external expansion arm perfusion cement slurry reinforcement device is provided in an embodiment of the present invention to solve the problems of low uplift bearing capacity of the suction caisson foundation in the prior art, high cost, uneconomical and time - consuming for improving the uplift bearing capacity.
[0006] To achieve the above object, the present invention provides an external expansion arm grouting cement slurry reinforcement device, which includes: a grouting pipeline disposed on the outer side wall of the workpiece to be reinforced; a piston connection key disposed in the grouting pipeline; an external expansion arm connected to the bottom of the grouting pipeline, and an external expansion arm connection key is disposed on the external expansion arm; the external expansion arm connection key is connected to the piston connection key through a connecting component; a plurality of grouting holes are disposed on the external expansion arm for spraying the cement slurry in the grouting pipeline; a servo electric cylinder connected to the piston connection key through a push rod for pushing the piston connection key to move downward so that the external expansion arm moves away from the grouting pipeline; when the servo electric cylinder is not working, the angle between the external expansion arm and the grouting pipeline is zero, and when the servo electric cylinder is working, the angle between the external expansion arm and the grouting pipeline is an acute angle.
[0007] Optionally, it further includes: a limit base; the limit base is disposed in the grouting pipeline and below the piston connection key for limiting the piston connection key after it moves downward.
[0008] Optionally, the grouting pipeline includes: a first grouting pipeline and a second grouting pipeline; the first grouting pipeline is of a linear structure; the second grouting pipeline is of an L-shaped structure; the first grouting pipeline is disposed on the outer side wall of the workpiece to be reinforced; the bottom end of the second grouting pipeline is connected to the side wall of the first grouting pipeline; the top end of the second grouting pipeline is connected to the cement slurry mixing barrel for transporting the cement slurry in the cement slurry mixing barrel and pouring it into the first grouting pipeline and the external expansion arm in sequence.
[0009] Optionally, the bottom end of the workpiece to be reinforced is of an open structure; a cover is disposed at the top end of the workpiece to be reinforced; a negative pressure hole is disposed on the cover, and the negative pressure hole is connected to a vacuum pump through a pressure pipeline for providing negative pressure to the workpiece to be reinforced so that the workpiece to be reinforced sinks.
[0010] Optionally, a cable guiding hole is disposed on the cover, and the cable guiding hole is connected to a fan through a cable for providing a vertical uplift force to the workpiece to be reinforced.
[0011] Optionally, the piston connection key is disposed in the first grouting pipeline; the servo electric cylinder is disposed at the top of the first grouting pipeline.
[0012] Optionally, a plurality of the first grouting pipelines are provided, and all the first grouting pipelines are arranged at intervals around the central axis of the workpiece to be reinforced; a plurality of the second grouting pipelines are provided, and the plurality of second grouting pipelines are connected to the plurality of first grouting pipelines in one-to-one correspondence.
[0013] Optionally, the outer expansion arm is connected to the bottom of the first grouting pipe through a swivel joint.
[0014] Optionally, the connecting component is a connecting rod.
[0015] Optionally, the production material of the grouting pipe is steel.
[0016] Advantages of the present invention:
[0017] The present invention provides an outer expansion arm grouting reinforcement device, which includes: a grouting pipe disposed on the outer side wall of the workpiece to be reinforced; a piston connection key disposed in the grouting pipe; an outer expansion arm connected to the bottom of the grouting pipe, and an outer expansion arm connection key disposed on the outer expansion arm; the outer expansion arm connection key is connected to the piston connection key through a connecting component; a plurality of grouting holes are disposed on the outer expansion arm for spraying the grout in the grouting pipe; a servo electric cylinder connected to the piston connection key through a push rod for pushing the piston connection key downward to move the outer expansion arm away from the grouting pipe; when the servo electric cylinder does not work, the included angle between the outer expansion arm and the grouting pipe is zero, and when the servo electric cylinder works, the included angle between the outer expansion arm and the grouting pipe is an acute angle.
[0018] Through the above structural design, a grouting pipe is disposed on the outer side wall of the workpiece to be reinforced, the bottom of the grouting pipe is connected to the outer expansion arm, and the grout is sprayed through the grouting holes disposed on the outer expansion arm. When the grout solidifies, it forms a solid with the outer expansion arm and the workpiece to be reinforced, thereby improving the horizontal and vertical bearing capacities of the workpiece to be reinforced. This method only needs to add an outer expansion arm, which is more economical, and has a simple structure and convenient operation.
[0019] To make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following specific preferred embodiments are given in conjunction with the accompanying drawings and are described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0021] Figure 1 It is a schematic structural diagram of an outer expansion arm grouting reinforcement device provided by an embodiment of the present invention.
[0022] Symbol description:
[0023] Workpiece to be strengthened - 1, First grouting pipeline - 2, Second grouting pipeline - 3, Outer expansion arm - 4, Piston connection key - 5, Outer expansion arm connection key - 6, Connection component - 7, Grouting hole - 8, Servo electric cylinder - 9, Push rod - 10, Limit base - 11, Negative pressure hole - 12, Cable guide hole - 13, Swivel joint - 14, Ground - 15. Detailed implementation mode
[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0025] The existing suction caisson foundation has a low uplift bearing capacity in the ocean. Therefore, the existing technology improves the uplift bearing capacity from three aspects: 1. Increase the size of the suction caisson foundation; 2. Conduct foundation reinforcement; 3. Increase the self-weight of the suction caisson foundation. However, the first and second methods are uneconomical, costly, time-consuming, and the effects are not obvious. The third method uses a relatively large amount of steel to increase the self-weight of the suction caisson foundation, undoubtedly increasing the cost and being uneconomical.
[0026] Therefore, the present invention provides an outer expansion arm grouting cement reinforcement device. By expanding the outer expansion arm 4 to inject cement slurry into the soil, a reinforced body is formed by the cement slurry, the outer expansion arm 4, and the workpiece to be strengthened 1 (the suction caisson foundation in the present invention), thereby improving the horizontal and vertical bearing capacities of the workpiece to be strengthened 1. Figure 1 It is a structural schematic diagram of an outer expansion arm grouting cement reinforcement device provided by an embodiment of the present invention. As Figure 1 shown, the device includes:
[0027] A grouting pipeline, which is arranged on the outer side wall of the workpiece to be strengthened 1; a piston connection key 5 is arranged in the grouting pipeline;
[0028] Specifically, the grouting pipeline includes a first grouting pipeline 2 and a second grouting pipeline 3; the first grouting pipeline 2 is a straight-line structure; the second grouting pipeline 3 is an L-shaped structure; the first grouting pipeline 2 is arranged on the outer side wall of the workpiece to be strengthened 1; the bottom end of the second grouting pipeline 3 is connected to the side wall of the first grouting pipeline 2; the length of the first grouting pipeline 2 is slightly greater than the height of the workpiece to be strengthened 1; preferably, in the present invention, the height of the bottom end of the second grouting pipeline 3 is slightly lower than the height of the workpiece to be strengthened 1; this can make the cement slurry in the second grouting pipeline 3 flow into the first grouting pipeline 2.
[0029] A plurality of the first grouting pipes 2 are provided, and all the first grouting pipes 2 are arranged at intervals around the central axis of the workpiece 1 to be reinforced; a plurality of the second grouting pipes 3 are provided, and the plurality of second grouting pipes 3 are connected to the plurality of first grouting pipes 2 in one-to-one correspondence.
[0030] In the present invention, four first grouting pipes 2 are provided, and the four first grouting pipes 2 are arranged at equal intervals around the central axis of the workpiece 1 to be reinforced; four second grouting pipes 3 are also provided, and the four second grouting pipes 3 are connected to the four first grouting pipes 2 in one-to-one correspondence.
[0031] In an alternative embodiment, the piston connecting key 5 is arranged inside the first grouting pipe 2. The outer diameter of the piston connecting key 5 is equal to the inner diameter of the first grouting pipe 2. In the present invention, four piston connecting keys 5 are also provided, that is, one piston connecting key 5 is arranged inside each first grouting pipe 2.
[0032] The top end of the second grouting pipe 3 is connected to the cement slurry mixing barrel, and is used for conveying the cement slurry in the cement slurry mixing barrel and pouring it into the first grouting pipe 2 and the outer expansion arm in sequence.
[0033] Furthermore, the outer expansion arm grouting and reinforcement device further includes: an air compressor; the air compressor is connected to the cement slurry mixing barrel and is used for providing pressure to the cement slurry mixing barrel so that the cement slurry in the cement slurry mixing barrel is poured into the second grouting pipe 3.
[0034] In an alternative embodiment, the production material of the grouting pipe is steel, which can ensure the structural strength of the grouting pipe and the stability of the overall structure.
[0035] The outer expansion arm grouting and reinforcement device further includes: an outer expansion arm 4, the outer expansion arm 4 is connected to the bottom of the grouting pipe, and an outer expansion arm connecting key 6 is arranged on the outer expansion arm 4; the outer expansion arm connecting key 6 is connected to the piston connecting key 5 through a connecting component 7; a plurality of grouting holes 8 are arranged on the outer expansion arm for spraying the cement slurry in the grouting pipe.
[0036] Specifically, the outer expansion arm 4 is connected to the bottom of the first grouting pipe 2 through a swivel joint 14. In the present invention, four outer expansion arms 4 are also provided; the four outer expansion arms 4 are connected to the four first grouting pipes 2 in one-to-one correspondence. An outer expansion arm connecting key 6 is arranged on each outer expansion arm 4; the outer expansion arm connecting key 6 is connected to the piston connecting key 5 through a connecting component 7; the connecting component 7 is a connecting rod.
[0037] A plurality of grouting holes 8 are provided on the outer expansion arm 4 for jetting the cement slurry in the grouting pipeline; specifically, the cement slurry in the second grouting pipeline 3 is poured into the first grouting pipeline 2, and the cement slurry in the first grouting pipeline 2 is then poured into the outer expansion arm 4 and jetted out from the grouting holes 8 on the outer expansion arm 4.
[0038] In the present invention, the cement slurry is preferably concrete, which is obtained by stirring cementitious materials and mineral aggregates with sufficient water, and has the characteristics of high compressive strength and good durability.
[0039] The outer expansion arm grouting reinforcement device further includes: a servo electric cylinder 9, the servo electric cylinder 9 is connected to the piston connection key 5 through a push rod 10 for pushing the piston connection key 5 to move downward so that the outer expansion arm 4 moves away from the grouting pipeline (specifically the first grouting pipeline 2); when the servo electric cylinder 9 does not work, the included angle between the outer expansion arm 4 and the grouting pipeline (specifically the first grouting pipeline 2) is zero, and when the servo electric cylinder 9 works, the included angle between the outer expansion arm 4 and the grouting pipeline (specifically the first grouting pipeline 2) is an acute angle. That is, when the workpiece 1 to be reinforced does not sink from the ground 15, the servo electric cylinder 9 does not work, and the outer expansion arm 4 coincides with the first grouting pipeline 2, that is, the outer expansion arm 4 is in a closed state relative to the first grouting pipeline 2; when the workpiece 1 to be reinforced sinks from the ground 15, at this time the servo electric cylinder 9 works, and the outer expansion arm 4 slowly moves away from the first grouting pipeline 2, that is, the outer expansion arm 4 is slowly in an open state relative to the first grouting pipeline 2.
[0040] Specifically, the servo electric cylinder 9 is arranged on the top of the first grouting pipeline 2.
[0041] In an alternative embodiment, the outer expansion arm grouting reinforcement device further includes: a limit base 11; the limit base 11 is arranged in the grouting pipeline (specifically the first grouting pipeline 2) and below the piston connection key 5 for limiting the downward movement of the piston connection key 5. In the present invention, when the piston connection key 5 moves down to the limit base 11, it no longer moves down, and at this time the outer expansion arm 4 also no longer moves away from the first grouting pipeline 2; this can limit the opening angle of the outer expansion arm 4 and play a role in fixing the outer expansion arm 4.
[0042] In an alternative embodiment, the bottom end of the workpiece 1 to be reinforced is an open structure; a cover is provided at the top end of the workpiece 1 to be reinforced; a negative pressure hole 12 is provided on the cover, and the negative pressure hole 12 is connected to a vacuum pump through a pressure pipeline for providing negative pressure for the workpiece 1 to be reinforced to cause the workpiece 1 to be reinforced to sink. A cable guide hole 13 is also provided on the cover, and the cable guide hole 13 is connected to a fan through a cable for providing a vertical uplift force for the workpiece 1 to be reinforced.
[0043] The following is illustrated by a specific embodiment:
[0044] A plurality of first grouting pipes 2 are arranged on the side wall of the workpiece to be processed (a suction caisson foundation in the present invention); the side wall of the first grouting pipe 2 is connected to the bottom of the second grouting pipe 3; the top of the second grouting pipe 3 is connected to a cement slurry mixing barrel; a servo electric cylinder 9 is arranged at the top of the first grouting pipe 2; a piston connection key 5 is arranged inside the first grouting pipe; the servo electric cylinder 9 is connected to the piston connection key 5 through a push rod 10; a limit base 11 is arranged below the piston connection key 5 and inside the first grouting pipe 2; the bottom of the first grouting pipe 2 is connected to an outer expansion arm 4 through a swivel joint 14; an outer expansion arm connection key 6 is arranged on the outer expansion arm 4; the outer expansion arm connection key 6 and the piston connection key 5 are connected through a connecting rod; a plurality of grouting holes 8 are arranged on the outer expansion arm 4. The workpiece 1 to be strengthened is negatively pressured and sunk from the ground 15 by a vacuum pump (at this time, the angle between the outer expansion arm 4 and the first grouting pipe 2 is zero, and the outer expansion arm 4 is in a closed state). After the workpiece 1 to be strengthened sinks, the servo electric cylinder 9 is started. The servo electric cylinder 9 pushes the piston connection key 5 to move downward through the push rod 10. At this time, the outer expansion arm 4 moves away from the first grouting pipe 2, that is, the outer expansion arm 4 is in an open state. When the piston connection key 5 moves downward to the limit base 11, the piston connection key 5 no longer moves downward. At this time, the outer expansion arm 4 is completely opened and forms a chamfer shape. Then, the cement slurry in the cement mixing barrel is sequentially conveyed to the second grouting pipe 3, the first grouting pipe 2, the outer expansion arm 4 and sprayed from the plurality of grouting holes 8 arranged on the outer expansion arm 4. When the cement slurry solidifies, the cement slurry, the outer expansion arm 4 and the workpiece 1 to be strengthened form a solidified body to improve the horizontal and vertical bearing capacities of the workpiece 1 to be strengthened.
[0045] The beneficial effects of the present invention:
[0046] The present invention provides an outer expansion arm grouting cement slurry strengthening device, which includes: a grouting pipe, the grouting pipe is arranged on the outer side wall of the workpiece 1 to be strengthened; a piston connection key 5 is arranged inside the grouting pipe; an outer expansion arm 4, the outer expansion arm 4 is connected to the bottom of the grouting pipe, and an outer expansion arm connection key 6 is arranged on the outer expansion arm 4; the outer expansion arm connection key 6 and the piston connection key 5 are connected through a connecting component 7; a plurality of grouting holes 8 are arranged on the outer expansion arm for spraying the cement slurry in the grouting pipe; a servo electric cylinder 9, the servo electric cylinder 9 is connected to the piston connection key 5 through a push rod 10 for pushing the piston connection key 5 to move downward so that the outer expansion arm 4 moves away from the grouting pipe; when the servo electric cylinder 9 does not work, the angle between the outer expansion arm 4 and the grouting pipe is zero, and when the servo electric cylinder 9 works, the angle between the outer expansion arm 4 and the grouting pipe is an acute angle.
[0047] Through the above structural design, a grouting pipeline is arranged on the outer side wall of the workpiece 1 to be strengthened. The bottom of the grouting pipeline is connected to the outward expansion arm 4. By expanding the outward expansion arm 4 and spraying cement slurry from the grouting holes 8 arranged on the outward expansion arm 4, when the cement slurry solidifies, it forms a reinforced body with the outward expansion arm 4 and the workpiece 1 to be strengthened, thereby improving the horizontal and vertical bearing capacities of the workpiece 1 to be strengthened. This method only needs to add the outward expansion arm 4, which is more economical, and has a simple structure and is convenient to operate.
[0048] In the present invention, specific embodiments are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.
Claims
1. An external expansion arm grouting reinforcement device, characterized in that, Including: A grouting pipeline, which is arranged on the outer side wall of the workpiece to be strengthened; a piston connecting key is arranged in the grouting pipeline; the workpiece to be strengthened is a suction caisson foundation; An outer expansion arm, which is connected to the bottom of the grouting pipeline, and an outer expansion arm connecting key is arranged on the outer expansion arm; the outer expansion arm connecting key is connected to the piston connecting key through a connecting component; a plurality of grouting holes are arranged on the outer expansion arm for spraying the cement slurry in the grouting pipeline; A servo electric cylinder, which is connected to the piston connecting key through a push rod and is used to push the piston connecting key to move downward so that the outer expansion arm moves away from the grouting pipeline; when the servo electric cylinder does not work, the included angle between the outer expansion arm and the grouting pipeline is zero, and when the servo electric cylinder works, the included angle between the outer expansion arm and the grouting pipeline is an acute angle; It further includes: a limit base; the limit base is arranged in the grouting pipeline and below the piston connecting key for limiting the piston connecting key after it moves downward; The grouting pipeline includes: a first grouting pipeline and a second grouting pipeline; the first grouting pipeline is of a straight-line structure; the second grouting pipeline is of an L-shaped structure; the first grouting pipeline is arranged on the outer side wall of the workpiece to be strengthened; the bottom end of the second grouting pipeline is connected to the side wall of the first grouting pipeline; The top end of the second grouting pipeline is connected to a cement slurry mixing barrel for conveying the cement slurry in the cement slurry mixing barrel and pouring it into the first grouting pipeline and the outer expansion arm in sequence; The bottom end of the workpiece to be strengthened is of an open structure; a cover is arranged at the top end of the workpiece to be strengthened; a negative pressure hole is arranged on the cover, and the negative pressure hole is connected to a vacuum pump through a pressure pipeline for providing negative pressure for the workpiece to be strengthened so that the workpiece to be strengthened sinks; A cable guiding hole is arranged on the cover, and the cable guiding hole is connected to a fan through a cable for providing a vertical uplift force for the workpiece to be strengthened; The piston connecting key is arranged in the first grouting pipeline; the servo electric cylinder is arranged at the top of the first grouting pipeline.
2. The device according to claim 1, wherein: A plurality of the first grouting pipelines are provided, and all the first grouting pipelines are arranged at intervals around the central axis of the workpiece to be strengthened; A plurality of the second grouting pipelines are provided, and the plurality of second grouting pipelines are connected to the plurality of first grouting pipelines in one-to-one correspondence.
3. The device according to claim 1, wherein: The outer expansion arm is connected to the bottom of the first grouting pipeline through a swivel joint.
4. The device according to claim 1, wherein: The connecting component is a connecting rod.
5. The device according to claim 1, wherein: The production material of the grouting pipeline is steel.
Citation Information
Patent Citations
Light steel structure house foundation reinforcing connecting piece
CN211621728U
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CN217267400U