CN210104812U

CN210104812U - Automatic installation structure for scour prevention layer of offshore wind power foundation

Info

Publication number: CN210104812U
Application number: CN201920650376.5U
Authority: CN
Inventors: 练继建; 肖瑶瑶; 练冲; 郭耀华; 王海军; 董霄峰
Original assignee: Frontier Technology Research Institute of Tianjin University Co Ltd
Current assignee: Frontier Technology Research Institute of Tianjin University Co Ltd
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2020-02-21
Anticipated expiration: 2029-05-08

Abstract

An automatic installation structure of an anti-scouring layer of an offshore wind power foundation comprises a single-pile foundation, a group of supporting rods, mooring ropes, pulleys and shaft wheels, wherein the number of the mooring ropes corresponds to the number of the supporting rods; wherein the one end and the bracing piece upper portion fixed connection of hawser, the other end of hawser is fixed on the pulley that single pile basis upper portion set up, the end and the base fixed connection on section of thick bamboo type on bracing piece upper portion, and the bracing piece lower extreme is articulated through arbor wheel and single pile basis lower part, and the ligature has the scour protection layer between the bracing piece. The utility model discloses a mode that single pile basis and section of thick bamboo type basis combined makes thin layer scour prevention layer evenly lay around single pile basis, has realized reducing the effect that the soil body erodees around the pile basis. This structural design is simple, easily construction to can increase concrete block through the barrel type basis of bracing piece end and increase the counter weight and make it fixed, realize green pile foundation scour prevention structure who recycles, this structure not only is suitable for on single pile basis, but is applicable to the marine wind power basis of various needs scour prevention.

Description

Automatic installation structure for scour prevention layer of offshore wind power foundation

Technical Field

The utility model relates to an ocean engineering structure construction field is one kind and can realize marine wind power basis scour protection layer automatic installation structure.

Background

With the rapid development of economy leading to a more severe energy situation, the development of clean energy has been a necessary choice. Offshore wind power is close to power load concentration areas due to development, and the offshore wind power has the advantages of being high in power consumption capacity, not occupying land resources and the like. In the construction of offshore wind power plants, offshore wind power foundations are important components of offshore wind power, at present, main offshore wind power foundation structures comprise single-pile foundations, high-pile bearing platform foundations, jacket foundations, tripod foundations, barrel-type foundations and the like, wherein the single-pile foundations have the advantages of being manufactured in a factory mode due to simple structures and the like, and are the most widely applied foundation forms.

Although the single-pile foundation is widely applied, the single-pile foundation has small structural rigidity and low natural frequency, and most importantly, the single-pile foundation has large diameter and is greatly influenced by seabed scouring, so that the structure is unstable. The most common anti-scour method at present is to lay a stone anti-scour layer in a protection area, and similar methods are to lay concrete blocks, sand bags, concrete hinge rows and the like. However, the measure is influenced by the terrain and water flow conditions, and the throwing quality of the scour prevention layer is difficult to ensure. With the continuous promotion of wind power generation demand, the adoption of high-power unit is advocated in offshore wind power station construction nowadays, but this often leads to the scouring risk increase around the stake because of the continuous increase of single pile foundation diameter.

Therefore, it is necessary to invent an automatic installation structure of an anti-scour layer of an offshore wind power single-pile foundation, so that the structure can effectively protect soil around the offshore wind power foundation, and is simple in construction and low in manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is overcome the above-mentioned not enough that prior art exists, provides an offshore wind power single pile basis scour protection layer automatic installation structure, can realize synthesizing the washing away that reduces the soil body around the single pile basis.

The technical scheme of the utility model

An automatic installation structure of an anti-scouring layer of an offshore wind power single-pile foundation is shown in figure 1 and comprises a single-pile foundation 1, a group of supporting rods, mooring ropes 2, pulleys 3 and shaft wheels 8, wherein the number of the mooring ropes corresponds to the number of the supporting rods. Wherein the one end and the 4 upper portions fixed connection of bracing piece of hawser 2, the other end of hawser 2 is fixed on the pulley 3 that 1 upper portion of single pile basis set up, the end and 5 fixed connection on barrel-type basis on 4 upper portions of bracing piece, 4 lower extremes of bracing piece and 1 lower part of single pile basis are direct articulated through arbor wheel 8, can expand or pack up, wherein bracing piece 4 and barrel-type basis 5 adopt steel welding to form, the ligature has scour prevention layer 7 between bracing piece 4, whole equipment is in the contraction state in the transportation.

The downward end of the cylindrical foundation is open, the upward end of the cylindrical foundation is closed to form a top cover, and the top cover is provided with a honeycomb-shaped drain hole 6. The scour prevention layer is of a double-layer closed bag-shaped curtain structure, and a filling opening is formed in the scour prevention layer.

The utility model has the advantages and beneficial effect:

an automatic installation structure of an anti-scouring layer of an offshore wind power foundation adopts a mode of combining a single-pile foundation and a cylindrical foundation, so that a thin anti-scouring layer is uniformly laid around the single-pile foundation, and the effect of reducing the scouring of a soil body around the pile foundation is realized. At first, the umbrella-shaped scour prevention layer that the single pile foundation combines to form with pulley, hawser, thin layer scour prevention layer can the simultaneous construction operation when the concrete is pour to the basis, has saved the process of later stage riprap maintenance, has effectively practiced thrift the engineering time. And secondly, the manufacturing cost of the pulley and the thin-layer structure is extremely low compared with stone throwing maintenance, and the installation cost of the foundation is greatly reduced. In addition, this structural design is simple, easily construction to can increase the counter weight through the section of thick bamboo basis of bracing piece end and make it fixed, realize green pile foundation scour prevention structure that recycles, this structure not only is suitable for on single pile basis, but is applicable to the marine wind power basis of various needs scour prevention, if the great basis of size, then can make the convenient transportation of modular with this structure, wait to assemble the installation again behind the wind-powered electricity generation field, have good application prospect.

Drawings

FIG. 1 is a schematic diagram of a method for automatically installing an anti-scour layer of an offshore wind power foundation;

FIG. 2 is an elevation view of an automatic installation of an erosion barrier;

FIG. 3 is a front view of the barrel foundation;

FIG. 4 is a top view of the cartridge type base;

FIG. 5 is a top view of an automatic installation of an erosion shield;

in the figure 1, a single pile foundation; 2. a cable; 3. a pulley; 4. a support bar; 5. a cylindrical foundation; 6. honeycomb-shaped drain holes; 7. an anti-scouring layer; 8. a wheel axle; 9. a cylinder wall; 10. a top cover; 11. a transition section.

Detailed Description

Example 1:

firstly, an automatic installation structure of an anti-scouring layer of an offshore wind power single-pile foundation comprises a single-pile foundation 1, a mooring rope 2, a pulley 3, a support rod 4, a cylindrical foundation 5, a honeycomb-shaped drain hole 6, an anti-scouring layer 7 and a shaft wheel 8, wherein the structure is shown in figure 1. Wherein 2 one end of hawser and 4 upper portions fixed connection of bracing piece, the end and the 5 fixed connection of barrel type basis of bracing piece 4, 4 lower extremes of bracing piece and single pile basis 1 are direct to be connected through arbor wheel 8, can rotate so that make the bracing piece expand or pack up, wherein bracing piece 4 and barrel type basis 5 adopt steel welding to form, barrel type basis diameter 1m, the one end opening down of barrel type basis, the one end closure forms top cap 10 up, be provided with cellular wash port 6 on the top cap of barrel type basis. The scour protection layer 7 of the supporting rod length 15m is bound between the supporting rods 4 on the shore, the scour protection layer is of a double-layer closed bag-shaped curtain structure, and the whole device is in a contraction state in the transportation process.

Secondly, an installation method of the automatic installation structure of the anti-scouring layer of the offshore wind power single-pile foundation comprises the following steps:

the method comprises the following steps that 1, a single-pile foundation is transported to an offshore wind farm through an installation ship, after the single-pile foundation is driven into a specified depth through a pile hammer, workers on the ship slowly control a pulley 3 connected with a supporting rod 4 through a cable 2 through a remote controller, the supporting rod slowly descends through a retractable cable, and after the supporting rod falls into the water surface, the transition section of the single-pile foundation can be poured through an expansion ship.

And 2, after the whole scour prevention layer 7 is opened and falls to the water surface, draining water through a honeycomb-shaped drain hole on a top cover of the cylindrical foundation to assist the scour prevention layer to sink, and when the cylindrical foundation is contacted with a seabed soil body, properly adding a concrete balance weight on the cylindrical foundation according to the property of the soil body near the wind power plant in advance to enable the cylindrical foundation to be smoothly inserted into the soil body.

And 3, after the whole device is sunk in place, pouring high-plasticity soil into the double-layer anti-scouring layer through connecting and reserving a pouring inlet on the double-layer closed bag-shaped anti-scouring layer, and pouring soil to strengthen the protection effect, so that the anti-scouring layer is completely attached to a seabed soil body to protect the soil body around the single-pile foundation.

And 4, after the whole installation process is finished, the pulley and the cable on the foundation can be disassembled through the operation of the submarine robot, and the pulley and the cable can be recycled when used in the next installation process of the foundation.

After piling is finished, as shown in fig. 2, when the upper transition section 11 is hoisted and poured, the scaling and leveling of the pulley 3 can be controlled on site, after the whole scour prevention layer 7 is opened and falls to the water surface, the scour prevention layer 7 is assisted to sink by increasing the cylindrical foundation balance weight in advance and draining water through the honeycomb-shaped drain hole 6 on the cover top. The cartridge type foundation is shown in fig. 3 and 4. After the whole device is sunk in place, high-plasticity soil is poured into the double-layer anti-scouring layer and then is vacuumized, so that the anti-scouring layer is completely attached to the seabed soil body to protect the soil body around the pile foundation. The whole area installation is completed as shown in fig. 5.

Claims

1. An automatic installation structure of an anti-scouring layer of an offshore wind power foundation comprises a single-pile foundation and is characterized by further comprising a group of supporting rods, mooring ropes, pulleys and shaft wheels, wherein the number of the mooring ropes corresponds to that of the supporting rods; wherein the one end and the bracing piece upper portion fixed connection of hawser, the other end of hawser is fixed on the pulley that single pile basis upper portion set up, the end and the base fixed connection on section of thick bamboo type on bracing piece upper portion, and the bracing piece lower extreme is articulated through arbor wheel and single pile basis lower part, and the ligature has the scour protection layer between the bracing piece.

2. The automatic installation structure of an offshore wind power foundation anti-scouring layer as claimed in claim 1, wherein the cylinder type foundation is open at a downward end and closed at an upward end to form a top cover, and the top cover is provided with honeycomb-shaped drain holes.

3. The automatic installation structure of the offshore wind power foundation anti-scouring layer as claimed in claim 1, wherein the anti-scouring layer is a double-layer closed bag-shaped curtain structure, and a filling opening is formed in the anti-scouring layer.