CN114182764A - Foundation anti-scouring device and construction method - Google Patents
Foundation anti-scouring device and construction method Download PDFInfo
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- CN114182764A CN114182764A CN202111411435.1A CN202111411435A CN114182764A CN 114182764 A CN114182764 A CN 114182764A CN 202111411435 A CN202111411435 A CN 202111411435A CN 114182764 A CN114182764 A CN 114182764A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/08—Sinking workpieces into water or soil inasmuch as not provided for elsewhere
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The invention belongs to a foundation anti-scouring device and a construction method in the field of ports and maritime works, and the foundation anti-scouring device comprises an anti-scouring block which is composed of a plurality of concrete structures located on a mud surface and provided with a plurality of cavities inside. The scour protection piece is formed by the fixed concatenation of the whole prefabricated section of hollow concrete structure or hollow concrete monomer, inside the scour protection piece, the butt joint face of adjacent scour protection piece must closely laminate. The whole concrete structure or the single upper surface and the lower surface of hollow concrete all set up a plurality of trompils, when scour prevention piece adopted the transportation by flotation, need set up drill way enclosed construction and drill way enclosed construction's opening device in trompil department. After the anti-scouring block is transported in place and accurately positioned, the opening device with the orifice closed structure is used for opening the opening to enable the anti-scouring block to be filled with water or directly filled with water, and the anti-scouring block is self-sunk in place to realize construction and installation. The anti-scouring device is convenient to manufacture, small in engineering quantity, small in transportation ship limitation and convenient to construct, and can effectively reduce and save engineering cost and construction time.
Description
Technical Field
The invention relates to the field of ports and maritime work, in particular to an anti-scouring device and a construction method.
Background
In recent years, the infrastructure in the harbor field of China is fiercely, and offshore wind power in offshore platforms in the oil industry, cross-sea bridges in the traffic industry and the power industry is developed vigorously. In order to ensure the structure safety and reduce the construction cost, the seaport engineering foundation almost adopts a fixed pile (barrel, pier stud) type foundation. Under the action of waves and ocean currents, after an original seabed is provided with a foundation, the streamline of water flow particles near the foundation changes, and the sudden change of the streamline can cause the shear stress on soil particles on the surface of the seabed to be increased rapidly, so that the soil body of the seabed is scoured. Due to the fact that factors of ocean power action are numerous, and the submarine topography, geological types, tide and wave action of different sea areas are different, the local scouring depth and the scouring range of the foundation are more complex and changeable.
According to years of engineering practice, the depth and range of basic local scouring are difficult to accurately predict. In order to ensure the structure safety, the harbor engineering can lay an anti-scouring device aiming at the foundation, and the conventional devices mainly comprise concrete soft raft, sand bags, riprap and the like. By integrating the existing construction experience, the concrete soft raft has large weight, can not be towed in a floating manner, has high requirements on ships and construction cost; the sand bag and the riprap cannot form an integral module, the offshore construction time is long, the processes are multiple, and the construction cost is high.
Disclosure of Invention
In order to solve the technical problems, the invention provides a foundation anti-scouring device and a construction method, which effectively reduce the requirements of construction ships, reduce offshore construction procedures and save construction time and construction cost. The foundation anti-scouring device has low requirement on a transport ship, can be towed by buoyancy, can be wholly sunk, and has simple construction procedures.
The technical scheme is as follows:
the utility model provides a basis scour prevention device, scour prevention device arranges on the mud face around the basis under water, and a plurality of scour prevention piece docks and constitutes by establishing a plurality of cavitys concrete structure in the scour prevention device, and concrete structure's upper surface and lower surface all set up a plurality of trompils.
Based on the technical characteristics: the anti-scouring blocks are spliced into an outer contour with a hollow-out shape in the middle as an underwater foundation, and concrete contact surfaces of two adjacent anti-scouring blocks are tightly attached.
Based on the technical characteristics: an orifice closing structure is arranged at the opening; the opening device of the orifice closing structure is arranged in the concrete structure.
Based on the technical characteristics: the scour prevention block can be a concrete integral prefabricated block of the multi-cavity shell.
Based on the technical characteristics: the scour prevention piece also can be through connection structure with a plurality of hollow concrete monomer fixed connection become holistic structure, and two adjacent hollow concrete monomer's side pastes tightly.
Based on the technical characteristics: the connecting structure is a reinforcement cage which comprises a frame and stirrups for supporting and fixing the strip-shaped supports; the hollow concrete monomers are arranged into a strip-shaped hollow concrete structure in rows, and the frame comprises longitudinal stirrups and transverse stirrups; the longitudinal stirrups hoop the length direction of the strip-shaped hollow concrete structure; the transverse stirrup is hooped at the connecting end face of each hollow concrete monomer of the strip-shaped hollow concrete structure; the plurality of strip-shaped hollow concrete structures are bound into blocks through stirrups, and the stirrups are perpendicular to the longitudinal stirrups of the strip-shaped supporting frame.
Based on the technical characteristics: chamfering four vertical edges of the hollow concrete monomer for embedding the transverse stirrups; the contact surface of the longitudinal stirrup and the hollow concrete monomer is dug to form a groove for embedding the longitudinal stirrup; on the anti-scouring block splicing surface, grooves are dug in the stirrup positions of the hollow concrete monomers for embedding stirrups.
Based on the technical characteristics: after four adjacent hollow concrete monomers in the array are spliced, a vertical gap is formed at the intersection of the middle edge chamfers, and a reinforcing mesh is fixed on the top surface of the gap to cover the gap for water flow energy dissipation.
Based on the technical characteristics: the total area of the plane projection of the gap is less than or equal to 20% of the plane of the anti-scouring block, and the anti-scouring device is guaranteed to stably sit on the mud surface.
Based on the technical characteristics: the opening device comprises a concrete internal communication branch pipe and a concrete internal communication main pipe; concrete internal communication branch pipes are buried in the right opposite side of the orifice closed structure, a concrete internal communication main pipe is communicated with the concrete internal communication branch pipes to form a whole, and the concrete internal communication main pipe is provided with an inflation inlet to be connected with an inflation pump.
Based on the technical characteristics: the internal communication header pipes of the concrete are arranged in multiple rows, and the inflation ports are positioned on the same side.
Based on the technical characteristics: the projections of the openings on the upper and lower surfaces of the concrete structure on the horizontal plane are not coincident.
Based on the technical characteristics: the concrete structure is provided with a force application structure for traction with the applying tractor.
Based on the technical characteristics: adopt barge transportation basis scour prevention device, scour prevention device transports and targets in place and accurate positioning back, and scour prevention device fills water, relies on the dead weight to sink to mud face department through the trompil, accomplishes scour prevention device's installation.
Based on the technical characteristics: when the anti-scouring device is consigned by the marine buoyancy, the open hole is sealed by using the hole sealing structure, so that the concrete structure can float on the sea surface; after the anti-scouring device is conveyed in place and accurately positioned, the orifice closed structure is removed through the opening device, the anti-scouring device is filled with water and sinks to a mud surface by means of dead weight, and the installation of the anti-scouring device is completed.
Based on the technical characteristics: the opening device comprises a concrete internal communication branch pipe and a concrete internal communication main pipe; concrete internal communication branch pipes are embedded in the front face of the orifice closed structure, a concrete internal communication main pipe is communicated with the concrete internal communication branch pipes to form a whole, and the concrete internal communication main pipe is provided with an inflation inlet to be connected with an inflation pump; and the inflation inlet is inflated by an inflation pump, and the airflow passes through the concrete internal communication main pipe and the concrete internal communication branch pipe to push out the orifice closed structure.
From the above, the beneficial effects of the present invention are as follows:
the anti-scouring device is a concrete structure with a plurality of cavities arranged inside, and a plurality of holes are formed in the upper surface and the lower surface of the concrete structure. The anti-scouring device can be formed by splicing anti-scouring blocks and is convenient to arrange around a foundation. The scour prevention block can be formed by fixedly splicing concrete integral prefabricated blocks or a plurality of hollow concrete monomers, can be produced in a large-scale mode and a large-scale mode, and is high in production efficiency.
The anti-scouring device is of a concrete structure, the concrete structure is resistant to abrasion, and the anti-scouring effect is excellent.
The anti-scouring device adopts a hollow thin-wall structure, so that the engineering quantity can be greatly saved, and the engineering cost is reduced.
The anti-scouring device provided with the orifice sealing structure and the opening device can realize floating hauling, reduce the requirements on a transport ship and reduce the construction cost. The anti-scouring device is provided with the opening, the orifice sealing structure and the opening device, the operation is simple after the anti-scouring device is transported in place, the self-sinking of water can be realized, and the construction is simple and convenient.
Drawings
Fig. 1 is a plan view of an anti-erosion device according to embodiment 1 of the present invention.
Fig. 2 is a vertical layout view of an anti-erosion device in embodiment 1 of the present invention.
FIG. 3 is a structure view of a hollow concrete unit strip according to example 1 of the present invention.
FIG. 4 is a block-shaped fixing structure of the hollow concrete unit in example 1 of the present invention.
FIG. 5 is a detailed view of the structure of a hollow concrete unit according to example 1 of the present invention.
Fig. 6 is a layout view of the opening hole, the orifice closing structure and the opening device in example 1 of the present invention.
Fig. 7 is a pipe topology diagram of an orifice closing structure opening device according to embodiment 1 of the present invention.
Fig. 8 is a plan view of an anti-erosion device in embodiment 2 of the present invention.
Fig. 9 is a layout view of longitudinal and transverse partition walls in a concrete monolithic block according to embodiment 2 of the present invention.
Fig. 10 is a vertical layout view of an anti-erosion device in embodiment 2 of the present invention.
Description of the element reference numerals
1 base
21 hollow concrete monomer
22 concrete integral precast block
221 crossbar partition wall
3 opening the hole
4-orifice closing structure
5 opening device
51 concrete internal communication main pipe
52 inflation inlet
53 inflator pump connecting pipe
54 concrete internal communication branch pipe
6 mud surface
7 splicing surface
71 strip-shaped supporting and fixing frame
711 longitudinal stirrup
712 transverse stirrup
713 stirrup
8 notch
9 gap
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be regarded as the scope of the present invention without substantial changes in the technical contents.
When the anti-scouring device is transported by a barge, the anti-scouring device is simple in structure, the anti-scouring device is of a concrete structure with a plurality of cavities arranged inside, and the upper surface and the lower surface of the concrete structure are provided with a plurality of openings 3. The construction method comprises the following steps: after the anti-scouring device is conveyed in place and accurately positioned, the anti-scouring device automatically fills water through the open holes 3 and sinks to the mud surface by means of dead weight to complete the installation of the anti-scouring device.
When shipping the scour protection by means of buoyancy at sea, reference is made to fig. 1 to 10. The foundation anti-scouring device is a concrete structure with a plurality of cavities arranged inside, such as a hollow thin-wall concrete structure, the upper surface and the lower surface of the concrete structure are provided with openings 3, and the opening 3 is provided with an orifice sealing structure 4; an opening device 5 for an aperture closure 4 is arranged in the concrete structure. The above-mentioned foundation anti-scour device and construction method are further described in the following two specific embodiments.
As a preferred design, in the embodiment, referring to fig. 1, in the present scheme, the anti-erosion device is formed by butting four anti-erosion blocks, and the four anti-erosion blocks are spliced into an outer contour with a hollow-out shape in the middle as a foundation 1. The interface of adjacent scour prevention piece is vertical plane, scour prevention piece and the outline of basis 1 contact must with the 1 appearance phase-match of basis to guarantee between the adjacent scour prevention piece, scour prevention piece and the inseparable laminating of basis 1, prevent that rivers from drawing the soil body of brushing down along the gap.
Each scour prevention block is formed by splicing a plurality of hollow concrete monomers 21.
In this embodiment, in order to reduce the restriction on the transport vessel and the transport cost, the erosion prevention block should be capable of buoyancy hauling, so that the hollow concrete unit 21 takes the form of a hollow shell. In this embodiment, the hollow concrete unit 21 is a cube with a size of 800 × 800 and a wall thickness of 50 mm.
In this embodiment, referring to fig. 2, the height difference between the end of the erosion prevention block and the mud surface is controlled within 500mm, and the peripheral end of the erosion prevention block is provided with a slope inclined plane of about 1:3, so as to ensure the smooth transition between the mud surface and the erosion prevention block and reduce the water flow scouring effect. The hollow concrete elements 21 can be arranged here accordingly with a trapezoidal cross section.
In the embodiment, referring to fig. 3 to 4, in order to ensure the safety of the marine transportation, each hollow concrete unit 21 of the anti-scouring block can be restrained and fixed by a reinforcement cage. The hollow concrete single bodies 21 are firstly supported and fixed in a strip shape according to a row, and then a plurality of strip shapes are spliced into a block shape to form a complete anti-scouring block.
The reinforcement cage comprises a frame 71 for bar support fixation and stirrups 713. As shown in fig. 3, the hollow concrete units 21 are arranged in a row in a strip-shaped hollow concrete structure, and the frame 71 includes longitudinal stirrups 711 and transverse stirrups 712; the longitudinal stirrups 711 hoops the length direction of the strip-shaped hollow concrete structure; the transverse stirrups 712 are hooped at the connecting end faces of the hollow concrete monomers 21; the longitudinal stirrups 711 and the transverse stirrups 712 are bound and fixed at the intersection.
As shown in fig. 4, a plurality of strip-shaped hollow concrete structures are bound into a block shape by stirrups 713, and the stirrups 713 are perpendicular to the longitudinal stirrups 711. After the integral splicing of the scour prevention blocks is completed, the concrete units 21 are effectively restrained in all directions, and the relative movement in the transportation process can be guaranteed.
In the present embodiment, referring to fig. 4, in order to ensure that the contact surfaces are attached after the hollow concrete units 21 are spliced, the longitudinal stirrups 711, the transverse stirrups 712 and the stirrups 713 on the surface of the hollow concrete units 21 cannot protrude out of the surface of the hollow concrete units 21. Referring to fig. 5, four vertical edges of the hollow concrete single body 21 need to be chamfered, and the hollow concrete single body 21 on the splicing surface 7 of the erosion-resistant block is subjected to grooving at the position of the stirrup 713, and the depth of the notch 8 is slightly larger than the diameter of the steel bar. The longitudinal stirrups 711 are grooved in the same manner as the surface of the hollow concrete unit 21.
In this embodiment, referring to fig. 3 to 4, because four vertical edges of the hollow concrete units 21 are chamfered, after the four adjacent hollow concrete units 21 in the array are spliced, a vertical gap 9 appears at the intersection of the middle of the hollow concrete units, and in order to ensure the anti-scour effect, a reinforcing mesh is fixed on the top surface of each hollow concrete unit 21 as required to cover the gap 9, so as to perform the water flow energy dissipation function. The total area of the plane projection of the gap 9 is less than or equal to 20 percent of the plane of the anti-scouring block, so that the anti-scouring device is ensured to stably sit on the mud surface 6.
In this embodiment, when the scour prevention block is transported on the sea by using a floating towing method, a reinforcement cage can be used as a force application structure of the towing device. The force structure can also adopt a hook arranged on the scour prevention block or other force components convenient for binding the dragging rope.
In the preferred design, referring to fig. 6, in order to ensure that the scour prevention block can be towed in a floating manner and can be installed by self-filling water by means of self-weight, the top surface and the bottom surface of the hollow concrete unit 21 are provided with the openings 3, and the projections of the openings 3 of the top surface and the bottom surface on the horizontal plane are not overlapped, so that the water flow is prevented from being scoured downwards. In the transportation process, the opening 3 is sealed by adopting the orifice sealing structure 4, and the buoyancy of the anti-scouring block is greater than the gravity to realize buoyancy hauling.
In this embodiment, referring to fig. 6, in order to realize the automatic opening of the port closing structure 4 of the opening 3, a plastic or other light material pipe is buried as a concrete internal communication branch pipe 54 at the right opposite side of the port closing structure 4, and the side of the array of hollow concrete units 21 is perforated for laying the concrete internal communication main pipe 51, and the concrete internal communication branch pipes 54 at the right opposite side of the port closing structure 4 of the opening 3 are connected into a whole. The orifice closing structure 4 can be a cork, a rubber plug and the like, the material is not limited, and the tightness and the easy opening performance can be ensured.
In this embodiment, in order to guarantee the sinking effect of scour prevention piece, must transport scour prevention piece in place and the trompil can be opened to accurate positioning rear. In order to ensure the opening effect of the opening closing structure 4 of the opening 3, a set of opening devices 5 is separately adopted for each hollow concrete structure spliced into a strip shape, and an inflation port 52 of a concrete internal communication manifold 51 is required to be positioned at one side of the ship body for convenient inflation.
In this embodiment, referring to fig. 7, a plurality of concrete internal communication header pipes 51 are gathered to one or more large inflator pump connecting pipes 53, and the inflator pump is used for inflating after the positioning is completed, and when the air pressure reaches a certain threshold, the orifice sealing structure 4 is flushed out, so that the opening 3 is opened, and the anti-scouring block is self-sunk after being filled with water to complete the installation.
The novel anti-scour device and the construction method of the present application are further described with another specific embodiment.
In the embodiment, referring to fig. 8, the basic anti-scouring device in the present embodiment is formed by butting four anti-scouring blocks, and the anti-scouring block is a concrete integral prefabricated block 22.
In this embodiment, referring to fig. 8, the interfaces of adjacent anti-erosion blocks are vertical planes, and the outer contour of the anti-erosion block contacting with the foundation 1 needs to match with the outer contour of the foundation 1, so as to ensure that the adjacent anti-erosion blocks are closely attached to the foundation 1, and prevent water flow from drawing down and brushing the soil along the gap.
In this embodiment, in order to reduce the restriction on the transport vessel, reduce the amount of concrete work and reduce the transport cost, the anti-scour block should be capable of buoyancy hauling, so the concrete prefabricated block 22 should be in the form of a hollow shell. In order to ensure the structural strength safety and limit the structural deformation during the manufacturing and transportation of the concrete precast block 22, as shown in fig. 9, a plurality of longitudinal and transverse partition walls 221 are provided inside the concrete precast block 22. In this embodiment, the overall height of the concrete prefabricated block 22 is 1m, and the distance between the longitudinal and transverse partition walls 221 is 2 m.
In this embodiment, referring to fig. 10, the height difference between the end of the erosion prevention block and the mud surface 6 is controlled within 500mm, and the peripheral end of the erosion prevention block is provided with a slope inclined plane of about 1:3, so as to ensure the smooth transition between the mud surface and the erosion prevention block and reduce the water flow scouring effect.
As a preferable design, in this embodiment, when the anti-erosion device is transported by floating and towing, the hook can be pre-embedded on the end surface of the anti-erosion device to serve as a force structure of the towing and towing device.
Similar to embodiment 1, in this embodiment, in order to ensure that the anti-scouring device can be towed by buoyancy and can be installed by self-filling water by self-weight, the top surface and the bottom surface of the concrete integral precast block 22 are provided with openings 3, and the projections of the openings 3 of the top surface and the bottom surface on the horizontal plane are not overlapped, so as to prevent water flow from scouring downwards. In the transportation process, the opening 3 is sealed by adopting the orifice sealing structure 4, and the buoyancy of the anti-scouring block is ensured to be larger than the gravity so as to realize buoyancy hauling.
Similar to the first embodiment, in this embodiment, in order to realize the automatic opening of the opening closing structure 4 of the opening 3, plastic or other light material pipes are buried right opposite to the opening closing structure 4 of the opening 3 as concrete internal communication branch pipes 54, and the concrete internal communication main pipe 51 penetrates through the longitudinal and transverse partition walls to communicate the cavity chambers of the concrete integral precast block 22, and the concrete internal communication branch pipes 54 below the opening 3 are connected into a whole.
In this embodiment, in order to guarantee the sinking effect of the anti-scour device, the anti-scour device must be transported in place and the opening 3 can be opened at the rear of the accurate positioning. In order to ensure the opening effect of the opening closing structure 4 of the opening 3, the air charging port 52 of the concrete internal communication manifold 51 should be positioned at one side of the hull to facilitate air charging.
As preferred design, in this embodiment, adopt the pump to aerify after the location is accomplished, can rush out the orifice of a hole enclosed construction 4 of trompil 3 when atmospheric pressure reaches certain threshold value, realize that trompil 3 opens, the scour prevention piece is from sinking to the completion installation in place after filling water.
By combining the two embodiments, when the anti-scouring device is consigned by the buoyancy of the sea, the open hole 3 is sealed by the orifice sealing structure 4, so that the concrete structure can float on the sea surface; after the anti-scouring device is conveyed in place and accurately positioned, the orifice sealing structure 4 is removed through the opening device 5, the anti-scouring device is automatically filled with water and sinks to the mud surface by means of dead weight, and the anti-scouring device is installed.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (16)
1. The utility model provides a basis scour prevention device which characterized in that: the anti-scouring device is arranged on a mud surface (6) around an underwater foundation (1), the anti-scouring device is formed by butt joint of a plurality of anti-scouring blocks formed by a concrete structure with a plurality of cavities arranged therein, and the upper surface and the lower surface of the concrete structure are provided with a plurality of holes (3).
2. A basic anti-scour arrangement according to claim 1, further comprising: the anti-scouring blocks are spliced into an outer contour of the underwater foundation (1) in a hollow-out shape, and concrete contact surfaces of two adjacent anti-scouring blocks are tightly attached.
3. A basic anti-scour arrangement according to claim 1, further comprising: an orifice closing structure (4) is arranged at the position of the open hole (3); an opening device (5) of the orifice closing structure (4) is arranged in the concrete structure.
4. A basic anti-scour arrangement according to claim 3, wherein: the scour prevention block is a concrete integral prefabricated block (22) of the multi-cavity shell.
5. A basic anti-scour arrangement according to claim 3, wherein: the scour prevention piece is through connection structure with a plurality of hollow concrete monomer (21) fixed connection become holistic structure, adjacent two the side of hollow concrete monomer (21) pastes tightly.
6. A basic anti-scour arrangement according to claim 5, wherein: the connecting structure is a reinforcement cage which comprises a frame (71) and stirrups (713) for supporting and fixing strip-shaped supports; the hollow concrete single bodies (21) are arranged in a strip-shaped hollow concrete structure in a row, and the frame (71) comprises longitudinal stirrups (711) and transverse stirrups (712); the longitudinal stirrups (711) hoop the length direction of the strip-shaped hollow concrete structure; the transverse stirrups (712) are hooped at the connecting end faces of the hollow concrete single bodies (21) in the strip-shaped hollow concrete structure; and a plurality of strip-shaped hollow concrete structures are bound into a block shape through the stirrups (713), and the stirrups (713) are vertical to the longitudinal stirrups (711).
7. A basic anti-scour arrangement according to claim 6, wherein: four vertical edges of the hollow concrete single body (21) are subjected to chamfering treatment and are used for embedding the transverse stirrups (712); the contact surface of the longitudinal stirrup (711) and the hollow concrete single body (21) is grooved for embedding the longitudinal stirrup (711); on the splicing surface (7) of the scour prevention block, grooves (8) are dug in the hollow concrete single bodies (21) at the positions of the stirrups (713) and used for embedding the stirrups (713).
8. A basic anti-scour arrangement according to claim 7, wherein: four adjacent hollow concrete monomer (21) of array concatenation are accomplished the back, and the crossing department of middle edge chamfer forms vertical space (9), the fixed reinforcing bar net of top surface in space (9) covers space (9) for the rivers energy dissipation.
9. A basic anti-scour arrangement according to claim 8, wherein: the total area of the plane projection of the gap (9) is less than or equal to 20% of the plane of the anti-scouring block, and the anti-scouring device is guaranteed to stably sit on the mud surface (6).
10. A basic anti-scour arrangement according to claim 3, wherein: the opening device (5) comprises a concrete internal communication branch pipe (54) and a concrete internal communication main pipe (51); the concrete internal communication branch pipe (54) is buried in the right opposite side of the orifice closed structure (4), the concrete internal communication main pipe (51) is communicated with the concrete internal communication branch pipe (54) to form a whole, and the concrete internal communication main pipe (51) is provided with an inflation inlet (52) connected with an inflation pump.
11. A basic anti-scour arrangement according to claim 10, wherein: the concrete internal communication header pipes (51) are arranged in multiple rows, and the inflation ports (52) are located on the same side.
12. A basic anti-scour arrangement according to claim 1, further comprising: the projections of the openings (3) on the upper surface and the lower surface of the concrete structure on the horizontal plane are not coincident.
13. A basic anti-scour arrangement according to claim 1, further comprising: and a force application structure for applying, dragging and pulling is arranged on the concrete structure.
14. A construction method of a foundation anti-scour device according to claim 1, wherein: and (3) transporting the foundation anti-scouring device by adopting a barge, and after the anti-scouring device is transported in place and accurately positioned, the anti-scouring device fills water through the open hole (3) and sinks to the mud surface (6) by means of self weight to complete the installation of the anti-scouring device.
15. A construction method of a foundation anti-scour device according to claim 3, wherein: when the scour prevention device is consigned by the offshore buoyancy, the open hole (3) is closed by using the orifice closing structure (4) to ensure that the concrete structure can float on the sea surface; after the anti-scouring device is conveyed in place and accurately positioned, the orifice sealing structure (4) is removed through the opening device (5), the anti-scouring device is filled with water and sinks to the mud surface by means of dead weight, and the anti-scouring device is installed.
16. A method of constructing a foundation erosion prevention device as claimed in claim 15, wherein: the opening device (5) comprises a concrete internal communication branch pipe (54) and a concrete internal communication main pipe (51); concrete internal communication branch pipes (54) are buried in the right opposite side of the orifice closing structure (4), the concrete internal communication main pipe (51) is communicated with the concrete internal communication branch pipes (54) to form a whole, and the concrete internal communication main pipe (51) is provided with an inflation inlet (52) connected with an inflation pump; and inflating the inflation inlet (52) through the inflation pump, and ejecting the orifice closing structure (4) by airflow through the concrete internal communication main pipe (51) and the concrete internal communication branch pipe (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111411435.1A CN114182764B (en) | 2021-11-25 | 2021-11-25 | Foundation scour prevention device and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111411435.1A CN114182764B (en) | 2021-11-25 | 2021-11-25 | Foundation scour prevention device and construction method |
Publications (2)
| Publication Number | Publication Date |
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| CN114182764A true CN114182764A (en) | 2022-03-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116378109A (en) * | 2023-04-07 | 2023-07-04 | 上海勘测设计研究院有限公司 | Anti-scouring structure of floating crane integrated pile foundation, manufacturing and construction method |
| CN116791681A (en) * | 2023-08-14 | 2023-09-22 | 上海勘测设计研究院有限公司 | Scour prevention structure of underwater pile foundation and construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020104469A1 (en) * | 2001-02-05 | 2002-08-08 | Veazey Sidney E. | Precast modular concrete shapes and methods of installation to form shoreline stabilization, marine and terrestrial structures |
| CN1730842A (en) * | 2005-09-07 | 2006-02-08 | 天津大学 | Maritime air float hauling and positioning sinking mounting method for soft-foundation box-cylinder type infrastructure |
| CN108468353A (en) * | 2018-03-30 | 2018-08-31 | 中国电建集团华东勘测设计研究院有限公司 | A kind of ocean engineering foundation structure flexibility scour protection structure |
| CN112343092A (en) * | 2020-11-24 | 2021-02-09 | 华能灌云清洁能源发电有限责任公司 | Underwater pile foundation scouring protection device with scouring prevention hole |
| CN113089714A (en) * | 2021-04-13 | 2021-07-09 | 南京工程学院 | Offshore wind power single-pile foundation anti-scouring device and construction method thereof |
| CN214194682U (en) * | 2020-12-18 | 2021-09-14 | 天津水运工程勘察设计院 | Assembled marine wind power basis scour prevention dissipation structure |
-
2021
- 2021-11-25 CN CN202111411435.1A patent/CN114182764B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020104469A1 (en) * | 2001-02-05 | 2002-08-08 | Veazey Sidney E. | Precast modular concrete shapes and methods of installation to form shoreline stabilization, marine and terrestrial structures |
| CN1730842A (en) * | 2005-09-07 | 2006-02-08 | 天津大学 | Maritime air float hauling and positioning sinking mounting method for soft-foundation box-cylinder type infrastructure |
| CN108468353A (en) * | 2018-03-30 | 2018-08-31 | 中国电建集团华东勘测设计研究院有限公司 | A kind of ocean engineering foundation structure flexibility scour protection structure |
| CN112343092A (en) * | 2020-11-24 | 2021-02-09 | 华能灌云清洁能源发电有限责任公司 | Underwater pile foundation scouring protection device with scouring prevention hole |
| CN214194682U (en) * | 2020-12-18 | 2021-09-14 | 天津水运工程勘察设计院 | Assembled marine wind power basis scour prevention dissipation structure |
| CN113089714A (en) * | 2021-04-13 | 2021-07-09 | 南京工程学院 | Offshore wind power single-pile foundation anti-scouring device and construction method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116378109A (en) * | 2023-04-07 | 2023-07-04 | 上海勘测设计研究院有限公司 | Anti-scouring structure of floating crane integrated pile foundation, manufacturing and construction method |
| CN116378109B (en) * | 2023-04-07 | 2024-01-05 | 上海勘测设计研究院有限公司 | Anti-scouring structure of floating crane integrated pile foundation, manufacturing and construction method |
| CN116791681A (en) * | 2023-08-14 | 2023-09-22 | 上海勘测设计研究院有限公司 | Scour prevention structure of underwater pile foundation and construction method |
| CN116791681B (en) * | 2023-08-14 | 2023-12-19 | 上海勘测设计研究院有限公司 | Scour prevention structure of underwater pile foundation and construction method |
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| CN114182764B (en) | 2023-04-25 |
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