CN109989416A - Stabilized pile platform and construction method for pile driving construction of offshore wind power monopile foundation - Google Patents

Abstract

The invention discloses a pile stabilization platform and a construction method for pile driving construction of an offshore wind power single-pile foundation, wherein the pile stabilization platform includes an open ship and a pile holding frame system, and the pile holding frame system includes a pile holding frame and an auxiliary pile. The auxiliary pile is detachably connected and fixed with the pile-holding frame through the limit locking device. The pile-holding frame can move up and down relative to the auxiliary pile and the open boat. The pile-holding frame system also includes a stabilizer for locking the lifting position of the pile-holding frame relative to the auxiliary pile. The pile support device, the pile frame system is supported at the opening of the open boat through the transfer support device. When the pile stabilization platform provided by this scheme is transferred between stations, the open boat supports the entire pile holding frame system, which saves offshore construction time and improves construction efficiency; in this scheme, by releasing the limit locking device, the auxiliary piles of the pile stabilization platform can be directly inserted into The mud surface is used to complete the auxiliary pile driving operation, which is convenient and quick, and can quickly set up a single pile stable pile platform.

Description

Stabilized pile platform and construction method for pile driving construction of offshore wind power monopile foundation

technical field

The invention relates to the technical field of offshore wind power equipment construction, in particular to a stable pile platform and a construction method used for pile driving construction of offshore wind power monopile foundations.

Background technique

At present, most of the domestic single-pile foundation stabilization pile construction adopts the pile-holding frame system. The pile-holding frame system is placed on the jack-up operation platform or the offshore wind power operation catamaran. The pile is inserted below the mud surface, and the pile holder and the auxiliary pile form a stable pile platform for the construction of the single pile foundation. Due to the shortage of domestic jack-up operation platform and catamaran resources, the transfer of pile-holding frame system between stations requires all auxiliary piles to be pulled out, put down and transported to the next station, and then the pile platform is stabilized after being transported to the next station. It takes a long time to re-insert the pile frame sleeve for erection, and the window period of offshore construction operation is more critical.

Therefore, how to transfer between the positions and quickly set up the stable pile platform is a technical problem that those skilled in the art need to solve at present.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present invention is to provide a stable pile platform for pile driving construction of offshore wind power monopile foundation, which can realize transfer between positions, and can be quickly erected to improve construction efficiency. The invention also provides a construction method for pile driving construction of offshore wind power single pile foundation.

In order to achieve the above object, the present invention provides the following technical solutions:

A stable pile platform for pile driving construction of offshore wind power monopile foundation, comprising an open boat and a pile-holding frame system, wherein the pile-holding frame system includes a pile-holding frame and an auxiliary pile, and the auxiliary pile is realized by a limit locking device It is detachably connected and fixed with the pile-holding frame, and the pile-holding frame can move up and down relative to the auxiliary pile and the open boat. The pile-holding frame system also includes a method for locking the pile-holding frame relative to the auxiliary pile A pile-stabilizing support device in the lifting position of the pile, the pile-holding frame system is supported at the opening of the open ship through the transfer support device.

The method of using the pile stabilization platform provided by the present invention is as follows: positioning the open ship after reaching the position to be constructed, and then starting the auxiliary pile driving operation after the positioning is completed. Auxiliary pile driving operation. After the auxiliary pile driving operation, the pile holding frame is hoisted to the design elevation, and then the pile holding frame and the auxiliary pile are connected and fixed by the stabilizing pile support device, and the erection of the single-pile stabilizing pile platform can be quickly completed. Piling construction of monopile foundations. After the single pile driving operation is completed, the pile holding frame is lowered and supported on the open boat through the transfer support device, then the auxiliary pile is pulled up and raised, and the auxiliary pile and the pile holding frame are fixedly connected by the limit locking device. , The stabilized pile platform is supported on the open ship, and can be transferred to the next position as a whole after the anchor is lifted.

It can be seen that the beneficial effects of the present invention are as follows:

1) When transferring between stations, the open boat supports the entire pile-holding frame system, saving offshore construction time and improving construction efficiency;

2) By releasing the limit locking device, the auxiliary pile of the pile stabilization platform can be directly inserted into the mud surface, which is convenient and quick, and the single pile stable pile platform can be quickly erected.

In a preferred solution, the limit locking device includes a pin and a pin hole opened on the auxiliary pile and the sleeve of the pile-holding frame.

Preferably, the transfer support device includes a plurality of corbels disposed on the side surfaces of the pile-holding frame, and the pile-holding rack system is supported on the open upper end of the open ship through the corbels.

Preferably, a limit groove for restricting the movement of the corbel is provided at the opening of the open boat.

Preferably, the pile stabilizing support device includes a tie rod support and a pipe pile hook, one end of the tie rod support is connected to the pile holding frame and the other end is hung on the upper end of the auxiliary pile through the pipe pile hook.

Preferably, the tie rod support is a turnbuckle bolt with an overall length adjustable.

Preferably, a plurality of the pile-stabilizing support devices are provided at positions corresponding to each of the auxiliary piles on the pile-holding frame.

Preferably, the open ship is a flat barge with an opening at the end.

Preferably, a telescopic support platform is provided on the inner side of the opening of the open ship, and the pile-holding frame system is supported on the telescopic support platform through the transfer support device.

The present invention also provides a construction method for pile driving construction of offshore wind power single pile foundation, comprising the steps of:

For the auxiliary pile driving operation, use the stable pile platform as described in any one of the above to locate the position to be constructed, and then release the limit locking device to complete the auxiliary pile driving operation;

Set up a stable pile platform, hoist the pile holding frame to the design elevation, and connect and fix the pile holding frame and the auxiliary pile through the stable pile support device to form a single pile stable pile platform;

Single pile driving work.

Preferably, after the single pile driving operation step is finished, it also includes the steps:

Remove the pile stabilization platform, lower the pile holding frame and support it on the open boat through the transfer support device;

Assemble the pile-holding frame system, pull up the auxiliary pile and raise it, and use the limit locking device to fix the auxiliary pile and the pile-holding frame. At this time, the assembled pile-holding frame system is supported on the open boat;

Transfer between positions. After the open ship lifts the anchor, it drives the pile-holding frame system to transfer to other positions.

The derivation process of the beneficial effect produced by the construction method provided by the present invention is generally similar to the derivation process of the beneficial effect brought by the above-mentioned pile stabilization platform, so it is not repeated here.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying 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. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

Fig. 1 is the top view of the pile stabilization platform in the specific embodiment of the present invention;

FIG. 2 is an elevation view of the pile stabilization platform in a specific embodiment of the present invention when it is transferred between positions;

3 is a partial elevation view of the pile stabilization platform in the specific embodiment of the present invention when a single pile is driven;

FIG. 4 is a partial enlarged view of part A in FIG. 3 .

In Figures 1 to 4:

1-Open boat, 2-Open, 3-Pile frame, 4-Corbel, 5-Auxiliary pile, 6-Pipe pile hook, 7-Tube bolt.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIGS. 1 to 4 , FIG. 1 is a top view of the pile stabilization platform in a specific embodiment of the present invention; FIG. 2 is an elevation view of the pile stabilization platform in a specific embodiment of the present invention when transferring between positions; FIG. 3 It is a partial elevation view of the pile stabilization platform in the specific embodiment of the present invention when a single pile is driven; FIG. 4 is a partial enlarged view of part A in FIG. 3 .

The invention provides a pile stabilization platform used for pile driving construction of an offshore wind power monopile foundation, the pile stabilization platform includes an open ship 1 and a pile holding frame system. The pile-holding frame system includes a pile-holding frame 3 and an auxiliary pile 5 , that is, the pile-holding frame system in this solution is a pile-holding frame system with an auxiliary pile 5 . The auxiliary pile 5 is detachably connected and fixed with the pile-holding frame 3 through the limit locking device, and the pile-holding frame 3 can move up and down relative to the auxiliary pile 5 and the open ship 1. The pile-holding frame system also includes a relative auxiliary tool for locking the pile-holding frame 3 The pile stabilizing support device at the lifting position of the pile 5, the pile holding frame system is supported at the opening 2 of the open ship 1 through the transfer support device.

The method of using the pile stabilization platform provided by the present invention is as follows: the open ship 1 is positioned after reaching the position to be constructed, and the auxiliary pile driving operation can be started after the positioning is completed. Complete the auxiliary pile driving operation. After the auxiliary pile driving operation, the pile holding frame 3 is hoisted to the design elevation, and then the pile holding frame 3 and the auxiliary pile 5 are connected and fixed by the pile-stabilizing support device, and the erection of the single-pile pile-stabilizing platform can be completed quickly. The pile driving construction of the single pile foundation can be carried out. After the single pile driving operation is completed, the pile holding frame 3 is lowered and supported on the open ship 1 through the transfer support device, then the auxiliary pile 5 is pulled up with a vibrating hammer and then raised, and then the auxiliary pile 5 is moved by the limit locking device. It is fixedly connected with the pile holding frame 3. So far, the pile stabilization platform is supported on the open ship 1, and can be transferred to the next position as a whole after the anchor is lifted.

It should be noted that the limit locking device in this solution can be designed in various structural forms, such as a pin structure, a limit block structure or a claw structure, etc. In a preferred solution, the limit locking device includes a pin and A pin hole is opened on the sleeve of the auxiliary pile 5 and the pile-holding frame 3 . When the auxiliary pile driving operation is required, the auxiliary pile driving operation can be completed quickly by pulling out the bolt (ie, releasing the limit locking device). After the corresponding position, the auxiliary pile 5 can be transferred together with the pile holder 3 by inserting the bolt.

It should be noted that the transfer support device is used to support the pile-holding frame system when the pile-stabilizing platform is transferred to the position, and it can be designed into various structural forms to satisfy the support of the entire pile-holding frame system at the opening 2 of the open ship 1, For example, it can be supported by corbels, or supported by the limit platform and the lower end of the pile-holding frame 3, or supported by slings for hoisting and so on. In order to simplify the structure and facilitate the operation, in a preferred solution, the transfer support device includes a plurality of corbels 4 arranged on the side of the pile-holding frame 3 , and the pile-holding rack system is supported on the upper end of the opening 2 of the open ship 1 through the corbels 4 . As shown in FIG. 1 , the corbel 4 is arranged on the outer side of the sleeve of the pile-holding frame 3 , and the corbel 4 is clamped and supported with the upper end faces of the two side walls of the opening 2 , so that the pile-holding frame system can be smoothly supported on the upper end of the opening 2 .

Further preferably, in order to ensure that the pile-holding frame system does not move relative to the open ship 1 during the transfer of the camera position, in this solution, a limit groove is provided at the opening 2 of the open ship 1 to limit the movement of the corbel 4 .

It should be noted that the pile-stabilizing support device is used to ensure that the pile-holding frame 3 can be stably fixed at the position set on the auxiliary pile 5 during the single-pile pile driving operation, and it can be designed as, for example, a sling support device, or Claw support device, or limit table support device, etc. Preferably, the pile stabilization support device in this solution includes a tie rod support and a pipe pile hook 6, one end of the tie rod support is connected to the pile holder 3 and the other end is hung on the upper end of the auxiliary pile through the pipe pile hook 6, as shown in FIG. 3 As shown in FIG. 4 , in this way, the pile-holding frame 3 can be hung on the auxiliary pile 5 as a whole, thereby ensuring the stability of the pile-stabilizing platform.

The tie rod support can be designed as a tie rod with a fixed length, or can be designed as a tie rod connector with an adjustable length. Preferably, the tie rod support is a flower basket bolt 7 with an adjustable overall length, as shown in FIG. 4 . After the auxiliary pile driving operation, the pile-holding frame 3 is lifted to the design elevation, and the pile-holding frame 3 and the auxiliary pile 4 are connected and fixed by the turnbuckle bolt 7 and the pipe pile hook 6, which can quickly form a stable single-pile stabilization platform. 5. When the elevations of the piles are inconsistent, through the adjustment of the turnbuckles 7 between the auxiliary pile 5 and the pile-holding frame 3, the pile-holding frame 3 can be kept horizontal. At the same time, this stable pile platform can be used as a fixed platform for single pile construction measurement.

In order to further ensure the support connection strength between the pile-holding frame 3 and the auxiliary piles 5 , preferably, a plurality of pile-stabilizing support devices are provided on the pile-holding frame 3 at positions corresponding to each auxiliary pile 5 .

It should be noted that the open ship 1 in this scheme can be a separately designed ship with an opening, or can be transformed from an existing flat barge. Preferably, the open ship 1 in this scheme is an end part Flat barge with opening 2. The cost of the flat barge is low, and opening 2 on the deck of the flat barge is easy to transform.

The opening 2 of the above-mentioned open ship 1 is generally of a fixed size, and the width of the opening 2 can be designed according to the size of the pile-holding frame 3 to be applied. In the pile driving operation of the pile foundation, in order to make the open ship 1 suitable for other specifications of the pile-holding frame system, preferably, the opening 2 of the open ship 1 can also be designed as a structure with adjustable width in this solution. Specifically, the open ship 1 The inner side of opening 2 is provided with a telescopic support table, and the pile-holding frame system is supported on the telescopic support table through the transfer support device. The pile frame system provides an effective support base.

The present invention also provides a construction method for pile driving construction of offshore wind power single pile foundation, comprising the steps of:

S1: Auxiliary pile driving operation, use the stable pile platform as described in any one of the above to locate the position to be constructed, and then release the limit locking device to complete the auxiliary pile driving operation;

S2: Set up a stable pile platform, hoist the pile holding frame 3 to the design elevation, and connect and fix the pile holding frame 3 and the auxiliary pile 5 through the pile-stabilizing support device to form a single-pile stable pile platform;

S3: Single pile driving operation.

The above method mainly solves how to quickly erect a single-pile stabilizing platform in the construction of single-pile piling operation. The method utilizes the pile-stabilizing platform provided by the present invention, which can greatly improve the construction efficiency of single-pile piling operation and reduce construction costs.

Preferably, after the single pile driving operation step is finished, it also includes the steps:

S4: dismantle the pile stabilization platform, lower the pile: 3 and support it on the open ship 1 through the transfer support device;

S5: Assemble the pile-holding frame system, pull up the auxiliary pile 5 and raise it, and use the limit locking device to fix the auxiliary pile 5 and the pile-holding frame 3. At this time, the assembled pile-holding frame system is supported on the open ship 1 ;

S6: Transfer between positions, after the opening ship 1 lifts the anchor, it drives the pile-holding frame system to transfer to other positions.

In this specific embodiment scheme, this method mainly solves how to quickly transfer to the next machine position for construction after the completion of the single pile driving operation. The whole frame system is placed at the opening 2 of the open ship 1, so as to realize the rapid transfer of the whole pile stabilization platform between the positions.

It can be seen that the beneficial effects of the present invention are as follows:

1) When transferring between positions, the open ship 1 supports the entire pile-holding frame system, saving offshore construction time and improving construction efficiency;

2) By releasing the limit locking device, the auxiliary pile of the pile stabilization platform can be directly inserted into the mud surface, which is convenient and quick, and the single pile stable pile platform can be quickly erected.

3) The horizontality of the pile-holding frame can be adjusted through the flower basket bolts, which is efficient and fast.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. a kind of steady stake platform for offshore wind farm single-pile foundation piling construction, which is characterized in that including Opening Ships (1) and embrace Pile frame system, the pile holding frame system include pile holding frame (3), auxiliary pile (5), and the auxiliary pile (5) passes through limitation locking device Realization is detachably connected fixation with the pile holding frame (2), and the pile holding frame (3) being capable of the relatively described auxiliary pile (5) and institute Opening Ships (1) lifting moving is stated, the pile holding frame system further includes for locking the relatively described auxiliary pile of pile holding frame (3) (5) the steady stake support device of lifting position, the pile holding frame system is by transfer support device in the Opening Ships (1) Opening (2) at.

2. steady stake platform according to claim 1, which is characterized in that the limitation locking device includes bolt and opens up Pin hole on the sleeve of the auxiliary pile (5) and the pile holding frame (3).

3. steady stake platform according to claim 1, which is characterized in that the transfer support device includes being set to described embrace Multiple brackets (4) of pile frame (3) side, the pile holding frame system are supported in opening for the Opening Ships (1) by the bracket (4) Mouth (2) upper end.

4. steady stake platform according to claim 3, which is characterized in that be arranged at the opening (2) of the Opening Ships (1) limited Make the bracket (4) mobile limiting slot.

5. steady stake platform according to claim 1, which is characterized in that the steady stake support device include pull rod supporting element and Tubular pole links up with (6), and one end of the pull rod supporting element is connected to the pile holding frame (3) and the other end is linked up with by the tubular pole (6) upper end of the auxiliary pile (5) is hung over.

6. steady stake platform according to claim 5, which is characterized in that the pull rod supporting element is that overall length is adjustable Flower basket bolt (7).

7. steady stake platform according to claim 1, which is characterized in that correspond to each auxiliary on the pile holding frame (3) The position of stake (5) is provided with multiple steady stake support devices.

8. steady stake platform according to claim 1, which is characterized in that the Opening Ships (1) are that end is equipped with the flat of opening Plate is refuted.

9. steady stake platform according to claim 1, which is characterized in that be equipped with and stretch on the inside of the opening (2) of the Opening Ships (1) Contracting supporting table, the pile holding frame system is by the transfer support device on the retractable support platform.

10. a kind of construction method for offshore wind farm single-pile foundation piling construction, which is characterized in that comprising steps of

It is laggard to reach the seat in the plane that construct using steady stake platform as claimed in any one of claims 1-9 wherein for auxiliary pile pile sinking operation Then row positioning releases limitation locking device, complete the operation of auxiliary pile pile sinking；

Steady stake platform to be set up, pile holding frame is hung to designed elevation, pile holding frame is connected and fixed with auxiliary pile by steady stake support device, Form the steady stake platform of single pile；

Single pile pile sinking operation.

11. construction method according to claim 10, which is characterized in that after single pile pile sinking job step, also wrap Include step:

Steady stake platform is dismantled, pile holding frame is declined and passes through transfer support device in Opening Ships；

Assembling pile holding frame system, increases after auxiliary pile is pulled up, and is fixed auxiliary pile and pile holding frame using limitation locking device, this When, assembled pile holding frame system is supported in Opening Ships；

It is shifted between seat in the plane, drives pile holding frame system to be transferred to other seats in the plane after Opening Ships anchor.