CN115726310A - Steel pipe pile anti-scouring device - Google Patents

Abstract

The invention discloses a steel pipe pile anti-scouring device, comprising: a directional pulley, the directional pulley is movably connected with the outer wall of the steel pipe pile, and can move along the axial direction of the steel pipe pile; an annular reinforcement, The inner circle of the annular reinforcement is sleeved on the outer side of the steel pipe pile and connected with the directional pulley, and the outer circle of the annular reinforcement is connected with the guide buoyancy member through a guide cable. By setting the ring reinforcement on the outer side of the steel pipe pile, no matter how the water flow direction changes, it can block the water flow from scouring the soil where the steel pipe pile is fixed, ensure the fixing depth of the steel pipe pile, and improve the installation stability; A directional pulley is set on the outside of the pile to facilitate the deployment of the ring reinforcement; the soil is not directly changed, but the anti-scouring function is completed by adding the ring reinforcement to improve durability; the guide buoyancy is set to facilitate the assembly of the ring reinforcement and the ring Reinforcement position adjustment.

Description

Steel pipe pile anti-scouring device

technical field

The invention relates to the field of water construction engineering, in particular to an anti-scouring device for steel pipe piles.

Background technique

Due to its high bearing capacity, good flexibility, and fast construction speed, steel pipe piles are widely used in marine and offshore projects such as sea-crossing bridges, port terminals, offshore oil platforms, and offshore wind turbines, and have developed into water construction (structure) An important foundational form of a building. However, steel pipe piles often encounter many problems during use. Affected by factors such as ocean waves, currents, and tidal currents, the steel pipe piles hinder the flow of seawater, and the water flow on the upstream surface flows downward, and the flow speed is accelerated, forming a horseshoe-shaped vortex; due to the surrounding flow of seawater, the downstream surface forms a tail vortex. When the seabed surface is dominated by sandy soil, the horseshoe-shaped vortex and the tail vortex will cause the soil around the pile to rise up, and the phenomenon of sand digging will occur, forming a large scour pit. The formation of the scour pit reduces the depth of the pile into the soil, and the frictional resistance of the pile side and the resistance of the soil on the side of the pile are lost, which eventually leads to a decrease in the horizontal bearing capacity and vertical bearing capacity of the pile foundation, which affects the installation stability.

The existing scour protection methods are divided into active protection and passive protection methods. There are literatures and patents that propose different protective measures, but most of them are for bridges and riverbank structures. Affected by the complex environment of the ocean, active protection has not yet been implemented. To achieve the expected erosion protection effect. Most of the passive protection is to build the surface soil to fill the protective structure, and the durability of the protective structure is worthy of consideration.

For the above-mentioned problems in the prior art, there is no effective solution at present.

Contents of the invention

In order to solve the above problems, the present invention provides an anti-scouring device for steel pipe piles. By arranging a ring reinforcement on the outside of the steel pipe pile, the ring reinforcement will cover the seabed when the steel pipe pile is driven into the seabed, thereby hindering the direction of oncoming water flow. flow down, reduce the possibility of scour pits, and solve the problem of how to protect the steel pipe piles in the seabed; by connecting the directional pulleys on the outer wall of the steel pipe piles, the inner circle of the ring reinforcement is connected with the directional pulleys, The outer circle is connected with the guide buoyancy member to solve the problem of how to conveniently lay out the protective layer.

In order to achieve the above object, the present invention provides an anti-scouring device for steel pipe piles, including: a directional pulley, which is movably connected to the outer wall of the steel pipe pile and can move along the axial direction of the steel pipe pile An annular reinforcement, the inner circle of the annular reinforcement is sleeved on the outer side of the steel pipe pile and connected with the directional pulley, and the outer circle of the annular reinforcement is connected with the guide buoyancy member through a guide cable.

Further optionally, the annular reinforcement is an annular network frame; the annular network frame includes an inner ring, an outer ring and a skeleton arranged on the same plane; the outer ring is coaxially arranged with the inner ring, and the The diameter of the inner ring is smaller than that of the outer ring, and the outer ring is set on the outside of the inner ring; the inner ring is sleeved on the outside of the steel pipe pile and connected with the directional pulley, and the outer ring passes through The guiding cable is connected with the guiding buoyancy element; the skeleton is fixed between the inner ring and the outer ring.

Further optionally, vegetation is provided on the ring frame.

Further optionally, the skeleton includes a plurality of transverse ribs and a plurality of longitudinal ribs; one end of each longitudinal rib is connected to the inner ring, and the other end is connected to the outer ring, and the plurality of longitudinal ribs are connected to the inner ring The outer rings are evenly distributed; the two ends of each transverse rib are respectively connected with two adjacent longitudinal ribs, and a plurality of transverse ribs are evenly distributed between each adjacent two longitudinal ribs.

Further optionally, the annular reinforcement is an annular metal plate; the inner circle of the annular metal plate is sleeved on the outer side of the steel pipe pile and connected to the directional pulley; the outer circle of the annular metal plate passes through the guide cable Connect with guide buoyancy.

Further optionally, the annular metal plate includes multiple fan-shaped splicing plates, and the sides of the multiple fan-shaped splicing plates are sequentially connected to form the annular metal plate.

Further optionally, the plurality of fan-shaped splicing plates are connected by buckles.

Further optionally, the annular reinforcement is an annular film; the inner circle of the annular film is set on the outside of the steel pipe pile and connected to the directional pulley, and the outer circle is connected to the guide buoyancy member through a guide cable, It is used to expand the annular membrane by adjusting the position of the guiding buoyancy member.

Further optionally, a hook is provided on the top of the directional pulley, and the hook is connected with the adjusting cable.

Further optionally, the guide buoyancy member is a guide buoyancy bucket.

The above-mentioned technical scheme has the following beneficial effects: no matter how the water flow direction changes, it can block the water flow from scouring the soil at the fixed place of the steel pipe pile by setting the ring reinforcement on the outer side of the steel pipe pile, so as to ensure the fixing depth of the steel pipe pile and improve Installation stability; by setting a directional pulley on the outside of the steel pipe pile, the deployment of the ring reinforcement is facilitated; the soil is not directly changed, but the anti-scouring function is completed by adding a ring reinforcement to improve durability; by setting the guide buoyancy piece, The assembly of the ring reinforcement and the position adjustment of the ring reinforcement are convenient.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

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 that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a structural schematic diagram of a steel pipe pile anti-scouring device provided by an embodiment of the present invention;

Fig. 2 is a schematic structural view of a steel pipe pile anti-scouring device provided by another embodiment of the present invention.

Reference signs: 1-steel pipe pile 2-ring reinforcement 201-inner ring 202-outer ring 203-skeleton 204-vegetation 3-seabed

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the prior art, most of the active protection methods adopt the method of laying multiple steel pipe piles in front of the main steel pipe piles to reduce the scouring force of the water flow on the soil where the main steel pipe piles are located. Due to the complex environment of the ocean, the direction of the water flow is easy to change , this method does not achieve the expected results. Most of the passive protection methods use the method of constructing the bottom soil of steel pipe piles. The durability of this method is not strong, and it is difficult to maintain its effect under the long-term erosion of water flow.

In order to solve the above problems, an embodiment of the present invention provides an anti-scouring device for steel pipe piles. Fig. 1 is a schematic structural view of the anti-scouring device for steel pipe piles provided by the embodiment of the present invention. As shown in Fig. 1, the device includes: The pulley, the directional pulley is movably connected with the outer wall of the steel pipe pile 1, and can move along the axial direction of the steel pipe pile 1; the ring reinforcement 2, the inner circle of the ring reinforcement 2 is sleeved on the outside of the steel pipe pile 1, And it is connected with the directional pulley, and the outer circle of the ring reinforcement 2 is connected with the guide buoyancy member through the guide cable.

As shown in Figure 1, the steel pipe pile 1 sinks to the calibration position by driving or static pressure, the ring reinforcement 2 is set on the outside of the steel pipe pile 1, and the ring reinforcement 2 is lowered from the sea surface to the seabed 3. The soil on the seabed 3 is reinforced to prevent water flow from scouring the soil around the steel pipe pile 1, ensure the fixed depth of the steel pipe pile 1, and improve the stability of its installation.

In order to facilitate the deployment of the ring reinforcement 2, a directional pulley is movably connected to the outer wall of the steel pipe pile 1, and the directional pulley can move along the axial direction of the steel pipe pile 1, that is, the directional pulley can move up and down on the side wall of the steel pipe pile 1 . The inner circle of the ring reinforcement 2 is connected with the directional pulley, and the up and down movement of the ring reinforcement 2 can be controlled by moving the directional pulley.

As an optional embodiment, in order to improve the stability of the deployment of the annular reinforcement 2, a plurality of directional pulleys are evenly arranged on the outer wall of the steel pipe pile 1, and the plurality of directional pulleys are connected with the inner circle of the annular reinforcement 2 respectively. connected to jointly control the up and down movement of the ring reinforcement 2. Preferably, three directional pulleys are uniformly arranged on the outer wall of the steel pipe pile 1 .

Furthermore, the outer circle of the ring reinforcement 2 is connected with the guide buoyancy member through a guide cable, and when the ring reinforcement 2 is not installed, the ring reinforcement 2 is supported by the guide buoyancy member, so that the ring reinforcement 2 can be moved on the sea surface. When the installation of the ring reinforcement 2 is completed and needs to be deployed, the guide buoyancy member is moved out of the bottom of the reinforcement, and the ring reinforcement 2 is slowly lowered through the guide cable connected to the guide buoyancy member until the ring reinforcement 2 is placed on the seabed 3 surfaces.

As an optional embodiment, a plurality of guiding and floating parts are evenly connected to the outer circle of the ring reinforcement 2 to improve the stability of the ring reinforcement 2 when assembled.

As an optional embodiment, Fig. 2 is a structural schematic diagram of a steel pipe pile anti-scouring device provided by another embodiment of the present invention. As shown in Fig. 2, the annular reinforcement 2 is an annular network frame; the annular network frame is included in The inner ring 201, the outer ring 202 and the skeleton 203 arranged on the same plane; the outer ring 202 and the inner ring 201 are arranged coaxially, the diameter of the inner ring 201 is smaller than the diameter of the outer ring 202, and the outer ring 202 is arranged outside the inner ring 201; The inner ring 201 is sleeved on the outer side of the steel pipe pile 1 and connected with the directional pulley, the outer ring 202 is connected with the guiding buoyancy member through the guiding cable; the skeleton 203 is fixed between the inner ring 201 and the outer ring 202 .

The ring reinforcement 2 is a ring grid structure. The inner ring 201 is set on the outside of the steel pipe pile 1 and fixed with the directional pulley. The outer ring 202 is located on the outside of the inner ring 201 and coaxially arranged on the same plane as the inner ring 201. , the diameter is greater than the diameter of the inner ring 201 . A plurality of guide cables are evenly connected to the outer ring 202, and each guide cable is fixed with a guide buoyancy member.

There is a skeleton 203 between the inner ring 201 and the outer ring 202. The skeleton 203 forms a grid-like structure. The size of each grid is small. If the water flow scours, it can reduce the erosion force of the water flow on the soil fixed by the steel pipe pile 1 and avoid digging. sand phenomenon, and improve the installation stability of the steel pipe pile 1.

Preferably, the skeleton 203 is steel wire mesh, the inner ring 201 and the outer ring 202 are metal rings, and the skeleton 203, the inner ring 201 and the outer ring 202 are connected by welding.

As an optional implementation manner, as shown in FIG. 2 , vegetation 204 is provided on the ring grid.

In order to further improve the soil-fixing ability, in this embodiment, the annular network frame is covered with vegetation 204, and the type of vegetation 204 can be determined according to the specific fixed soil type. The grid size of the ring grid frame should meet the requirement that the roots of the vegetation 204 protrude, so as not to cause the entire vegetation 204 to fall off. In this way, when the annular network frame is lowered to a predetermined position, the roots of the vegetation 204 penetrate into the soil, further improving the ability of soil fixation, and completing biological protection.

As an optional embodiment, the skeleton 203 includes a plurality of transverse ribs and a plurality of longitudinal ribs; one end of each longitudinal rib is connected to the inner ring 201, and the other end is connected to the outer ring 202, and the plurality of longitudinal ribs are connected to the inner ring 201. The outer rings 202 are evenly distributed; both ends of each transverse rib are respectively connected to two adjacent longitudinal ribs, and a plurality of transverse ribs are evenly distributed between each adjacent two longitudinal ribs.

The skeleton 203 includes a plurality of transverse ribs and a plurality of longitudinal ribs, each longitudinal rib is connected between the inner ring 201 and the outer ring 202, each transverse rib is connected between two adjacent longitudinal ribs, and the longitudinal ribs have the same diameter The connected transverse ribs can form a ring-shaped frame body, and multiple ring-shaped frame bodies and multiple longitudinal ribs together form the skeleton 203 .

As an optional implementation manner, the transverse rib and the longitudinal member are connected by welding or fixed by clamping.

As an optional embodiment, the annular reinforcement 2 is an annular metal plate; the inner circle of the annular metal plate is sleeved on the outside of the steel pipe pile 1 and connected with the directional pulley; the outer circle of the annular metal plate is connected to the guide buoyancy member through the guide cable connect.

The annular reinforcement 2 can also be an annular metal plate, the inner circle of the annular metal plate is set on the outside of the steel pipe pile 1 and connected with the directional pulley, and a plurality of mounting holes can be drilled on the outer circle for connecting the guide cables. A metal ring can also be fixed on the outer side of the outer circle, and the guiding cable is bound and connected with the metal ring.

As an optional implementation manner, the annular metal plate includes multiple fan-shaped splicing plates, and the sides of the multiple fan-shaped splicing plates are sequentially connected to form the annular metal plate.

In order to facilitate the layout of the annular metal plate, the overall annular metal plate is designed as a split structure in this embodiment, and the annular metal plate can be divided into multiple fan-shaped splicing plates, and the sides of multiple fan-shaped splicing plates are connected to form an annular metal plate. plate. In this way, during installation, multiple fan-shaped splicing plates can be spliced on the outside of the steel pipe pile 1 and then lowered directly, without the need for sleeve installation from the top of the steel pipe pile 1, which improves the deployment efficiency.

Preferably, the annular metal plate is made of stainless steel.

As an optional implementation manner, there are 4 fan-shaped splicing panels.

As an optional implementation manner, multiple fan-shaped splicing panels are connected by buckles.

In order to facilitate the installation of the ring-shaped metal plate, the multi-piece fan-shaped splicing plates in this embodiment are connected by buckles. In this way, only the installation positions of the multi-piece fan-shaped splicing plates need to be matched, and the multi-piece fan-shaped splicing plates can be spliced through the buckles. Board fixed connection. Of course, if construction conditions permit, welding multiple fan-shaped splice plates can also achieve the purpose of fixed connection.

As an optional embodiment, the annular reinforcement 2 is an annular film; the inner circle of the annular film is set on the outside of the steel pipe pile 1 and connected with the directional pulley, and the outer circle is connected with the guide buoyancy member through a guide cable for The annular membrane is opened by adjusting the position of the guide buoyancy member.

The annular reinforcement 2 can also be an annular film, the inner circle of which is set on the outside of the steel pipe pile 1 and connected with the directional pulley, and the place near the outer circle can be connected with the guide cable by drilling a plurality of connection holes. Since the annular membrane is light in weight and easily deformed by the water flow, it is possible to adjust the position of the guide buoyancy member so that the guide cable can stretch the annular membrane, so that the annular membrane can be opened to the maximum extent and the area can be covered as large as possible. The surrounding seabed of steel pipe piles.

As an optional implementation, the material of the annular film may be PE film.

As an optional embodiment, a hook is provided on the top of the directional pulley, and the hook is connected with the adjusting cable.

In order to control the movement of the directional pulley conveniently, a hook is fixed on the top of the directional pulley in this embodiment, and the construction personnel can adjust the moving position of the directional pulley by controlling and adjusting the cable.

As an optional implementation, the guiding buoyancy member is a guiding buoyancy bucket.

The cost of the guided floating bucket is low, and the top surfaces of the multiple guided floating buckets are flat, which can support the annular reinforcement 2 relatively stably, and the construction personnel can also conveniently control the guided floating bucket through the cable.

The above-mentioned technical scheme has the following beneficial effects: no matter how the water flow direction changes, it can block the water flow from scouring the soil at the fixed place of the steel pipe pile by setting the ring reinforcement on the outer side of the steel pipe pile, so as to ensure the fixing depth of the steel pipe pile and improve Installation stability; by setting a directional pulley on the outside of the steel pipe pile, the deployment of the ring reinforcement is facilitated; the soil is not directly changed, but the anti-scouring function is completed by adding a ring reinforcement to improve durability; by setting the guide buoyancy piece, The assembly of the ring reinforcement and the position adjustment of the ring reinforcement are convenient.

In the present invention, specific examples have been applied to explain the principles and implementation methods of the present invention, and the descriptions of the above examples are only used to help understand the method of the present invention and its core idea; meanwhile, for those of ordinary skill in the art, according to this The idea of the invention will have changes in the specific implementation and scope of application. To sum up, the contents of this specification should not be construed as limiting the present invention.

Claims (10)

1. The utility model provides a steel-pipe pile anti-scouring device which characterized in that includes:

the directional pulley is movably connected with the outer side wall of the steel pipe pile and can move along the axial direction of the steel pipe pile;

and the outer circle of the annular reinforcing piece is connected with the guide buoyancy piece through a guide cable.

2. An anti-scour device for a steel pipe pile according to claim 1, wherein:

the annular reinforcing piece is an annular net rack;

the annular net rack comprises an inner ring, an outer ring and a framework which are arranged on the same plane;

the outer ring and the inner ring are coaxially arranged, the diameter of the inner ring is smaller than that of the outer ring, and the outer ring is arranged on the outer side of the inner ring;

the inner ring is sleeved outside the steel pipe pile and connected with the directional pulley, and the outer ring is connected with the guide buoyancy piece through a guide cable;

the framework is fixed between the inner ring and the outer ring.

3. An anti-scour device for a steel pipe pile according to claim 2, wherein:

and the annular net rack is provided with vegetation.

4. An anti-scour device for a steel pipe pile according to claim 3, wherein:

the framework comprises a plurality of transverse ribs and a plurality of longitudinal ribs;

one end of each longitudinal rib is connected with the inner ring, the other end of each longitudinal rib is connected with the outer ring, and the plurality of longitudinal ribs are uniformly distributed between the inner ring and the outer ring;

two ends of each transverse rib are respectively connected with two adjacent longitudinal ribs, and a plurality of transverse ribs are uniformly distributed between every two adjacent longitudinal ribs.

5. An anti-scour device for a steel pipe pile according to claim 1, wherein:

the annular reinforcing piece is an annular metal plate;

the inner circle of the annular metal plate is sleeved on the outer side of the steel pipe pile and is connected with the directional pulley;

the excircle of the annular metal plate is connected with the guide buoyancy piece through a guide cable.

6. An anti-scour device for a steel pipe pile according to claim 1, wherein:

the annular reinforcing piece is an annular metal plate;

the inner circle of the annular metal plate is sleeved on the outer side of the steel pipe pile and is connected with the directional pulley;

the excircle of the annular metal plate is connected with the guide buoyancy piece through a guide cable.

7. An anti-scour device for a steel pipe pile according to claim 6, wherein:

the fan-shaped splicing plates are connected through a buckle.

8. An anti-scour device for a steel pipe pile according to claim 1, wherein:

the annular reinforcing member is an annular film;

the inner circle of the annular film is sleeved on the outer side of the steel pipe pile and connected with the directional pulley, and the outer circle of the annular film is connected with the guide buoyancy piece through the guide cable and used for enabling the annular film to be opened by adjusting the position of the guide buoyancy piece.

9. An anti-scour device for a steel-pipe pile according to any one of claims 1 to 8, comprising:

and a hook is arranged at the top of the directional pulley and is connected with an adjusting cable.

10. An anti-scour device for a steel pipe pile according to any one of claims 1 to 8, wherein:

the guide buoyancy piece is a guide buoyancy barrel.

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