CN215759197U - Anti-scouring device for pile foundation of ocean engineering structure - Google Patents
Anti-scouring device for pile foundation of ocean engineering structure Download PDFInfo
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- CN215759197U CN215759197U CN202121599394.9U CN202121599394U CN215759197U CN 215759197 U CN215759197 U CN 215759197U CN 202121599394 U CN202121599394 U CN 202121599394U CN 215759197 U CN215759197 U CN 215759197U
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Abstract
An anti-scouring device for a pile foundation of an ocean engineering structure comprises vertical slide rails, horizontal slide rails and grid plates, wherein a circular cylinder body is formed by the vertical slide rails, the horizontal slide rails are radially arranged around the circular cylinder body, the grid plates are positioned on the upper portions of the horizontal slide rails and surround the circular cylinder body to form conical anti-scouring bodies, one end of each conical anti-scouring body with a larger cross section faces downwards, the circular cylinder body is connected with a single pile, the lower end of the single pile extends into a seabed, the horizontal slide rails are in contact with the single pile foundation, the height of each conical anti-scouring body, which is away from the upper end and the lower end of the circular cylinder body, is adjustable, the taper of each conical anti-scouring body is adjustable, kinetic energy of a water body is effectively consumed and reduced, the intensity of horseshoe vortexes and tail vortexes around the single pile is weakened or dispersed, part of coming sand directly passes through the grid plates, sedimentation and siltation behind the grid plates are promoted, toe scouring effect of slowing flow and promoting siltation is effectively achieved, the construction period is short, the cost is low, the surface of the single pile is not easy to be damaged, and the operation is simple and convenient.
Description
Technical Field
The utility model belongs to the technical field of ocean foundation protection, and relates to an anti-scouring device for an ocean engineering structure pile foundation.
Background
In ocean engineering, a pile foundation penetrating into a seabed base supporting layer is generally adopted as a foundation for bearing the load of an upper structure, and the safety and stability of the pile foundation are important for the production and operation of an ocean engineering structure. In a complex marine environment, wave flow coacts to form vortex flow near the pile legs, and the movement of the water body clamps and carries silt near the pile legs, so that the mud surface is washed away, and the pile legs are exposed out of the mud surface. The seabed scouring phenomenon seriously influences the stability of the pile foundation, the inherent cycle of the ocean engineering structure is slowly changed due to the change of the rigidity of the seabed, the fatigue damage of the structure is aggravated, the long-term safe production of the platform is adversely affected, and the actual scouring is often more serious than the scouring quantity predicted in the design stage. The same phenomenon also widely exists in facilities such as port and pier foundations, piers, submarine pipelines and the like which are arranged in shallow sea areas and on the shore. Therefore, the marine structure foundation is protected by adopting a certain and reliable scouring protection device and method, and the device and the method are beneficial and harmless to long-term safe service of the marine structure and reduction of operation and maintenance pressure.
The existing protection measures mainly comprise measures of underwater stone throwing, gravity type sand quilt laying, foundation grouting reinforcement and the like, but the engineering measures usually need to consume a large amount of materials, the construction period is long, the cost is high, and an anticorrosive coating on the surface of a pile foundation is easy to damage during construction.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an anti-scouring device for a pile foundation of an ocean engineering structure, which has a simple structure, a circular cylinder body is formed by adopting a plurality of vertical slide rails, the horizontal slide rails are radially arranged around the circular cylinder body, a grid plate is positioned at the upper part of the horizontal slide rails and surrounds the circular cylinder body to form a conical anti-scouring body, one end with a larger cross section of the conical anti-scouring body faces downwards, the circular cylinder body is connected with a single pile, the lower end of the single pile extends into a seabed, the horizontal slide rails are contacted with the single pile foundation, an adjusting mechanism adjusts the height of the conical anti-scouring body from the upper end and the lower end of the circular cylinder body along the vertical slide rails in a sliding way in the process that the single pile extends into the seabed, before piling, the adjusting mechanism adjusts the taper of the conical anti-scouring body along the horizontal slide rails in a sliding way, effectively consumes and reduces the kinetic energy of a water body, weakens or disperses the intensity of a horseshoe vortex and a tail vortex around the single pile, and allows part of coming sand to directly pass through the grid plate, the sedimentation is promoted to sink and fall behind the grid plate, the toe impact in front of and behind the grid plate is reduced, the anti-scouring effect of slow flow sedimentation promotion is effectively achieved, the construction period is short, the cost is low, the surface of a single pile is not easy to be injured, and the operation is simple and convenient.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: an anti-scouring device for a pile foundation of an ocean engineering structure comprises a vertical slide rail, a horizontal slide rail, a grating plate and an adjusting mechanism; the plurality of vertical slide rails are arranged into a circular cylinder at intervals along the vertical direction, the plurality of horizontal slide rails are radially arranged around the circular cylinder, the plurality of grating plates are positioned at the upper parts of the horizontal slide rails and surround the circular cylinder to form a conical anti-scouring body, and the larger end of the cross section of the conical anti-scouring body faces downwards; the adjusting mechanism slides along the vertical slide rail to adjust the height of the conical anti-scouring body from the upper end and the lower end of the circular cylinder body, and the adjusting mechanism slides along the horizontal slide rail to adjust the taper of the conical anti-scouring body.
The vertical slide rail is an I-shaped section bar, the leg width of one side is higher than that of the other side, the wider leg is of an arc-shaped structure, and the concave inner arc surface forms a circular cylinder.
The horizontal sliding rail is an I-shaped section, the leg width of one side is higher than that of the other side, and a plurality of locking holes which are distributed axially are formed in the upper side face of the narrower leg.
The grating plate is an arc plate with an isosceles trapezoid structure, the width of the lower bottom edge is larger than that of the upper bottom edge, and at least one through sliding slot hole is formed between the upper bottom edge and the lower bottom edge.
A plurality of grid holes are formed in the grid plate; the grid holes are circular holes, rectangular holes or special-shaped holes distributed according to the porosity.
The adjusting mechanism comprises a vertical sliding seat, a horizontal sliding seat, a supporting arm and a locking pin, the vertical sliding seat is in sliding fit with the vertical sliding rail and is connected with the horizontal sliding rail, and the horizontal sliding seat is in sliding fit with the horizontal sliding rail; the lower end of the vertical sliding rail is provided with a limiting block for preventing the vertical sliding seat from sliding downwards.
One end of the supporting arm is hinged with a horizontal sliding seat close to the circular cylinder, and the other end of the supporting arm is in sliding fit with the sliding groove hole of the grid plate.
The grid plate is hinged with the other horizontal sliding seat far away from the circular cylinder, and the locking pin penetrates through the horizontal sliding seat to be matched with the locking hole in the horizontal sliding rail.
One of the two horizontal sliding seats on the horizontal sliding rail is locked, and the other horizontal sliding seat slides along the horizontal sliding rail to adjust the inclination angle of the grid plate.
The beneficial effects of the utility model are mainly embodied in that:
the vertical slide rail and the single pile which are arranged through the device are fixedly connected, the vertical sliding seat connected with the horizontal slide rail is in sliding fit with the vertical slide rail, and in the piling process, the horizontal slide rail is in contact with the single pile foundation and is self-adaptive to the position close to the upper end of the vertical slide rail.
Two horizontal sliding seats in sliding fit are arranged on the horizontal sliding rail of the device, the locking pin penetrates through the horizontal sliding seats to be matched and locked with the locking hole in the horizontal sliding rail, and when one horizontal sliding seat is locked, the other horizontal sliding seat is pushed to adjust the taper of the conical anti-scouring body so as to adapt to different ocean currents.
The grid plate of the device blocks incoming flow, rises upwards and is mixed with the turbulent flow of the water body on the upper side, the kinetic energy of the water body is consumed and reduced, and the intensity of the horseshoe vortex and the wake vortex around the single pile is weakened or dispersed.
The grid holes of the grid plates of the device block incoming sand in incoming flow, so that the incoming sand is settled and deposited inside and outside the conical anti-scouring body, the toe scouring in the front and at the back of the grid plates is reduced, and the anti-scouring effect of slow flow and silt promotion is effectively achieved.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a schematic top view of fig. 2.
In the figure: the vertical sliding rail 1, the horizontal sliding rail 2, the locking hole 21, the grating plate 3, the sliding groove hole 31, the adjusting mechanism 4, the vertical sliding seat 41, the horizontal sliding seat 42, the supporting arm 43 and the locking pin 44.
Detailed Description
As shown in fig. 1 to 3, an anti-scouring device for a pile foundation of an ocean engineering structure comprises a vertical slide rail 1, a horizontal slide rail 2, a grating plate 3 and an adjusting mechanism 4; the vertical slide rails 1 are arranged into a circular cylinder at intervals along the vertical direction, the horizontal slide rails 2 are radially arranged around the circular cylinder, the grid plates 3 are positioned at the upper parts of the horizontal slide rails 2 and surround the circular cylinder to form a conical anti-scouring body, and the larger end of the conical anti-scouring body faces downwards; the adjusting mechanism 4 adjusts the height of the conical anti-scouring body from the upper end and the lower end of the circular cylinder body along the vertical slide rail 1 in a sliding manner, and the adjusting mechanism 4 adjusts the taper of the conical anti-scouring body along the horizontal slide rail 2 in a sliding manner. Form circular cylinder and be connected with the single pile through a plurality of vertical slide rails 1, the single pile lower extreme is deepened in the seabed, horizontal slide rail 2 and single pile basis contact, adjustment mechanism 4 is deepened the seabed in-process at the single pile and is followed the height that the conical scour prevention body of vertical slide rail 1 slide adjusting leaves circular cylinder upper and lower extreme, before the pile driving, adjustment mechanism 4 slides adjusting the tapering of the conical scour prevention body along horizontal slide rail 2, when the incoming flow erodees the conical scour prevention body of festival, effective consumption and reduction water kinetic energy, weaken or disperse horseshoe vortex and wake vortex intensity around the single pile, let some incoming sand directly pass through the grid plate, promote silt to sink behind the grid plate and descend the silt, reduce the toe rush around the grid plate, effectively reach the scour prevention effect that the silt is promoted to slow flow, construction cycle is short, low cost, be difficult for hindering the single pile surface, and easy operation is convenient.
In the preferred scheme, the vertical slide rail 1 is an I-shaped section, the leg width of one side is higher than that of the other side, the wider leg is of an arc-shaped structure, and the concave inner arc surface forms a circular cylinder. Simple structure, the vertical slide rail 1 that adopts I-shaped section bar structure is high in intensity, and the interior cambered surface and the single pile outer wall contact of this I-shaped section bar have further improved overall structure intensity after the welding.
In the preferred scheme, the horizontal sliding rail 2 is an i-shaped section, the leg width of one side is higher than that of the other side, and a plurality of locking holes 21 which are axially distributed are arranged on the upper side surface of the narrower leg. The structure is simple, the horizontal sliding rail 2 adopting an I-shaped section structure is adopted, the wider leg on one side is downwards contacted with a single-pile foundation, the contact area is large, the bearing capacity is good, and the locking holes 21 are axially distributed along the narrower leg and are used for being matched with the locking pins 44 to lock the horizontal sliding seat 42.
In the preferred scheme, the grid plate 3 is an arc plate with an isosceles trapezoid structure, the width of the lower bottom edge is greater than that of the upper bottom edge, and at least one through sliding slot hole 31 is formed between the upper bottom edge and the lower bottom edge. Simple structure, during the use, the conical scour prevention body is constituteed to a plurality of grid plates 3, and the cross section of conical scour prevention body bottom is greater than the cross section of upper end for block the incoming flow and form inside and outside siltation layer.
In a preferred scheme, a plurality of grid holes are arranged on the grid plate 3; the grid holes are circular holes, rectangular holes or special-shaped holes distributed according to the porosity. Simple structure, during the use, the grid hole on grid plate 3 adopts single hole or a plurality of different holes to mix each other at intervals and lays for make it get into conical anti-scouring body through partly sand grain, and block partly sand grain and make its landing outside conical anti-scouring body.
Preferably, the porosity of the grid plate 3 is 0.3-0.5, which is beneficial to reducing the flow velocity of the tidal wave and promoting the sediment deposition behind the plate.
In a preferred scheme, the adjusting mechanism 4 comprises a vertical sliding seat 41, a horizontal sliding seat 42, a supporting arm 43 and a locking pin 44, the vertical sliding seat 41 is in sliding fit with the vertical sliding rail 1 and is connected with the horizontal sliding rail 2, and the horizontal sliding seat 42 is in sliding fit with the horizontal sliding rail 2; the lower end of the vertical slide rail 1 is provided with a limiting block for preventing the vertical slide seat 41 from sliding downwards. Simple structure, during the use, vertical sliding seat 41 is from the height of the upper and lower end of circular cylinder along vertical slide rail 1 sliding adjustment's conical scour prevention body, and horizontal sliding seat 42 is along the tapering of horizontal slide rail 2 sliding adjustment's conical scour prevention body, makes its adaptation different ocean currents, and adaptability is good.
In a preferred scheme, one end of the supporting arm 43 is hinged with a horizontal sliding seat 42 close to the circular cylinder, and the other end of the supporting arm 43 is in sliding fit with the sliding slot hole 31 of the grid plate 3. Simple structure, during the use, in the tapering accommodation process of the conical scour prevention body, the both ends of support arm 43 are in active state with horizontal sliding seat 42 and grid plate 3 respectively, are favorable to adjusting the tapering of the conical scour prevention body in a flexible way.
In a preferred scheme, the grating plate 3 is hinged with another horizontal sliding seat 42 far away from the circular cylinder, and a locking pin 44 passes through the horizontal sliding seat 42 and is matched with the locking hole 21 on the horizontal sliding rail 2. The structure is simple, when in use, the locking pin 44 is adopted to penetrate through the horizontal sliding seat 42 to be matched with the locking hole 21 on the horizontal sliding rail 2, the horizontal sliding seat 42 is locked, and the operation is simple and convenient.
In a preferred scheme, one of the two horizontal sliding seats 42 on the horizontal sliding rail 2 is locked, and the other one slides along the horizontal sliding rail 2 to adjust the inclination angle of the grating plate 3. Simple structure, during the use, at the tapering adjustment process of the conical scour prevention body, one of them horizontal sliding seat 42 is locked, and another horizontal sliding seat 42 is in the active condition, promotes the horizontal sliding seat 42 of activity and follows the inclination of horizontal slide rail 2 slide adjusting grid plate 3, adjusts the inclination of all grid plates 3 in proper order and reaches the tapering of adjusting the conical scour prevention body.
Preferably, the included angle between the grating plate 3 and the incoming flow is 30-75 degrees, which is beneficial to sediment deposition.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.
Claims (9)
1. The utility model provides an ocean engineering structure pile foundation anti-scouring device which characterized by: the device comprises a vertical slide rail (1), a horizontal slide rail (2) and a grating plate (3); a plurality of vertical slide rail (1) establish into circular cylinder along vertical direction interval cloth, a plurality of horizontal slide rail (2) are radially to be laid around circular cylinder, a plurality of grid boards (3) are located horizontal slide rail (2) upper portion and encircle and be conical scour protection body around circular cylinder, the great one end of conical scour protection body cross section is down.
2. The anti-scour device for a pile foundation of an ocean engineering structure according to claim 1, wherein: the vertical sliding rail (1) is an I-shaped section bar, the leg width of one side is higher than that of the other side, the wider leg is of an arc-shaped structure, and the concave inner arc surface forms a circular cylinder.
3. The anti-scour device for a pile foundation of an ocean engineering structure according to claim 1, wherein: the horizontal sliding rail (2) is an I-shaped section, the leg width of one side is higher than that of the other side, and a plurality of locking holes (21) which are distributed axially are formed in the upper side face of the narrower leg.
4. The anti-scour device for a pile foundation of an ocean engineering structure according to claim 1, wherein: the grating plate (3) is an arc plate with an isosceles trapezoid structure, the width of the lower bottom edge is larger than that of the upper bottom edge, and at least one through sliding slot hole (31) is formed between the upper bottom edge and the lower bottom edge.
5. The anti-scour device for a pile foundation of an ocean engineering structure according to claim 1, wherein: a plurality of grating holes are formed in the grating plate (3); the grid holes are circular holes, rectangular holes or special-shaped holes distributed according to the porosity.
6. The anti-scour device for a pile foundation of an ocean engineering structure according to claim 1, wherein: the adjusting mechanism (4) comprises a vertical sliding seat (41), a horizontal sliding seat (42), a supporting arm (43) and a locking pin (44), the vertical sliding seat (41) is in sliding fit with the vertical sliding rail (1) and is connected with the horizontal sliding rail (2), and the horizontal sliding seat (42) is in sliding fit with the horizontal sliding rail (2); the lower end of the vertical sliding rail (1) is provided with a limiting block for preventing the vertical sliding seat (41) from sliding downwards.
7. An anti-scour device for a pile foundation of an ocean engineering structure according to claim 6, wherein: one end of the supporting arm (43) is hinged with a horizontal sliding seat (42) close to the circular cylinder, and the other end of the supporting arm (43) is in sliding fit with the sliding groove hole (31) of the grid plate (3).
8. An anti-scour device for a pile foundation of an ocean engineering structure according to claim 6, wherein: the grating plate (3) is hinged with another horizontal sliding seat (42) far away from the circular cylinder, and a locking pin (44) penetrates through the horizontal sliding seat (42) to be matched with a locking hole (21) on the horizontal sliding rail (2).
9. An anti-scour device for a pile foundation of an ocean engineering structure according to claim 8, wherein: one of the two horizontal sliding seats (42) on the horizontal sliding rail (2) is locked, and the other one slides along the horizontal sliding rail (2) to adjust the inclination angle of the grating plate (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121599394.9U CN215759197U (en) | 2021-07-14 | 2021-07-14 | Anti-scouring device for pile foundation of ocean engineering structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121599394.9U CN215759197U (en) | 2021-07-14 | 2021-07-14 | Anti-scouring device for pile foundation of ocean engineering structure |
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| CN215759197U true CN215759197U (en) | 2022-02-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482060A (en) * | 2021-07-14 | 2021-10-08 | 中国长江三峡集团有限公司 | Anti-scouring device and method for pile foundation of ocean engineering structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482060A (en) * | 2021-07-14 | 2021-10-08 | 中国长江三峡集团有限公司 | Anti-scouring device and method for pile foundation of ocean engineering structure |
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