KR20130053030A - The construction method of wind power generation the upper part construction composing three leg - Google Patents

Abstract

PURPOSE: A method for constructing a three-leg upper structure of a windmill is provided to install the upper structure on the sea without using a crane. CONSTITUTION: A method for constructing a three-leg upper structure(10) a windmill is as follows. A skid shoe(20) is installed in a skid rail(32) of a deck(31). A support piece is installed in a saddle of the skid shoe. A beam(40) is installed in one side of an upper frame of the skid shoe. Two binding parts(12a) of a body of the upper structure are bond to the support piece. The rest binding part is bond to the beam. The binding parts can be fixed by clamps.

Description

Construction method of 3 lag wind power superstructure {THE CONSTRUCTION METHOD OF WIND POWER GENERATION THE UPPER PART CONSTRUCTION COMPOSING THREE LEG}

The present invention relates to a construction method of a three-lag wind turbine superstructure, and in particular, a method of construction of a three-legged superstructure, installing a skid shoe on a skid rail of a ship deck, and beams on the skid shoe. And a step of installing the support piece, the step of fixing the upper structure on the skid shoe after the step, and the step of installing the pile on the seabed after the step, and after the step It relates to a construction method of a three-lag wind turbine upper structure to provide a safe construction method of the upper structure by installing the upper structure on the sea, including the step of installing the upper structure on the pile.

Conventionally, in order to install a wind turbine superstructure on the sea, after loading the superstructure on the ship, the ship is moved around the pile on the sea, and then the superstructure loaded on the ship is pulled back to the crane. Construction work has been performed in which the legs of the superstructure are attached to each pile and then finished by welding.

Therefore, since the upper structure is pulled up by the crane, the shaking of the upper structure is so severe that many installation workers bind the upper structure to the pile while holding the upper structure, which is not enough to prevent the upper structure from shaking.

In particular, the installation of superstructures at sea can be dangerous due to the erratic ocean climate, which inadvertently causes waves, strong winds, or rainfall, which can be dangerous to workers when the installation is carried out under these climatic conditions. Can cause.

In addition, because the working environment of the installation is very demanding and inconvenient, workers feel fatigue easily and use cranes, so even in the above climatic conditions, even the crane cannot overcome the external force of climatic conditions and may cause partial breakdown and collapse. The loss is large.

The construction method of the three-lag wind power generating superstructure according to the present invention to solve the above-described problems, the purpose is to be able to install the upper structure on the sea without using a crane.

In addition, the purpose is to minimize the dangerous work by the safe construction of the upper structure, and to provide operators with the convenience and ease of installation work.

Along with this, the crane is not used, so there is no fear of partial breakdown and collapse of the crane, and thus the purpose is to reduce economic losses.

In achieving the above object, the construction method of the three-lag wind turbine superstructure according to the present invention includes a step of installing a skid shoe on a skid rail of a ship deck, and after the step is performed, the beam and the beam on the skid shoe. After going through the step of installing the support piece, the step is carried out to fix the upper structure on the skid shoe, and then go through the step of installing the file on the seabed after the step is carried out the file on the seabed In the step of installing, the first step including a subsea inspection step, a template jacket setting step, a pin pile hitting step, a template jacket level adjustment step; A second step including a lag file injection step and a lag file hitting step; A third step including a hammer part removing step and a lag pile level cutting step; A fourth step including removing the shape jacket and completing the lag file installation; Will be included,

After the step of installing the pile on the seabed is to go through the installation of the superstructure on the pile, the installation of the superstructure on the pile, the fifth step of the vessel access step; A sixth step including a scaffold injection step of the ship, a scaffold fixing step of the ship, and a lowering and welding superstructure; A seventh step of removing the ship; Incorporation is achieved for offshore installation of the superstructure.

The construction method of the three-lag wind power superstructure of the present invention, the upper structure can be installed on the sea without using a crane, and there is an effect that the damage to life in the construction process is prevented.

In addition, by providing the convenience and ease of construction to the worker to achieve a safe construction with the effect of reducing fatigue, there is an effect of reducing the economic loss by reducing human and physical damage.

1 is a block diagram of the upper structure of the present invention.
Figure 2 is a detailed view of the skid shoe of the present invention.
3 is a side view of the superstructure disposed on the vessel.
Figure 4 is a plan view of Figure 3;
5, 6, 7, 8 are file installation flowcharts on the sea floor.
8, 10, 11 are flow charts of the installation of superstructures on piles at sea;

Hereinafter, the present invention will be described with reference to the accompanying drawings.

The construction method of the three-lag wind turbine upper structure 10 according to the present invention, a method for constructing the upper structure 10 consisting of four legs 12b, shown in Figures 1, 2, 3, 4 As described above, a summary of the configuration of the upper structure 10 before explaining the construction method of the upper structure 10 for wind power generation, the blade (11a), power generation (11b), column (11c), body 12 The body 12 is composed of three fastening portions 12a formed horizontally and three legs 12b vertically bent at an angle of 90 degrees from the respective fastening portions 12a. A skid shoe 20 is installed in the binding portion 12a and the leg 12b, and the skid shoe 20 has an upper portion of the saddle 21 in which two binding portions 12a of the upper structure 10 can be installed. A support piece 45 is provided at the bottom, and a beam 40 on which the remaining one of the binding portions 12a of the upper structure 10 may be installed is provided, and the beam 40 and the saddle 21 are disposed below. It is provided with a support upper frame 22, the saddle 21 is revealed that the hinge is connected to the upper frame 22, the lower end of the upper frame 22, a pair of two pairs of the first jack 23 And a lower jack 25 provided with a second jack 24 and capable of supporting two pairs of jacks 23 and 24 at a lower end of the pair of first jacks 23 and the second jack 24. ) Is provided, and the lower portion of the lower frame 25 is formed of engineering plastics 26, which is a synthetic polymer material having excellent heat resistance, mechanical strength, and abrasion resistance, and protects the pair of jacks 23 and 24. Reinforcing guides 27 are formed on both sides of the first jack 23, and a hinge guide 28 is formed between the jacks 23 and 24 and the lower frame 25. have.

Each of the binding portions 12a of the upper structure 10 installed on the saddle 21 is fixed by the clamp 60 while being horizontal, so that the upper structure 10 is fixed.

The construction method of the upper structure 10 configured as described above will be described below.

Installation steps of the skid shoe

In installing the skid shoe 20 to the skid rail 32 formed on the deck 31 of the ship 30, the engineering plastic 26 formed on the lower frame 25 of the skid shoe 20, the skid rail ( 32 to install a plurality of skid shoes 20, as an example, referring to the drawings five skid shoes 20 are installed on the skid rail (32).

After the installation of the skid shoe 20 is made to go through the step of installing the beam 40 and the support piece 45 on the skid shoe 20.

Installing beams and support pieces on skid shoes

The beam 40 is installed at one side of the upper frame 22 of the skid shoe 20 and the support piece 45 is installed at the saddle 21 hinged to the other side of the upper frame 22.

After the installation of the beam and the support piece on the skid shoe is subjected to the step of installing and fixing the upper structure.

Installing and fixing the superstructure

Since each upper structure 10 is installed and fixed on five skid shoes 20, the two engagement portions 12a, which are the bodies 12 of the upper structure 10, are connected to the upper frame of the skid shoe 20. 22) It is attached to the saddle 21 hinged at the upper end and the other one binding part 12 to the beam 40 installed on the upper frame 22, and then fixing the binding part 12a with the clamp 60. To fix the upper structure (10).

After the installation and fixing of the superstructure is made, as shown in Figures 5, 6, 7, and 8 is subjected to the pile installation step on the sea floor.

In the file installation phase,

A first step including a subsea inspection step, a template jacket setting step, a pin pile striking step, and a template jacket level adjustment step; A second step including a lag file injection step and a lag file hitting step; A third step including a hammer part removing step and a lag pile level cutting step; A fourth step including removing the shape jacket and completing the lag file installation; .

The file installation step will be described in detail below.

In the first step, the seabed inspection step is first performed to check the stress, deformation, and flatness of the seabed ground so that the pile can be firmly installed, and to determine the best place for the pile to be excavated. Each pillar of the jacket (70) is assembled into a rectangular frame, and the upper template (71) is positioned at the upper end to go through the template jacket setting step to achieve a fixed, after the template jacket setting step is made, the template jacket (70) After inserting the pin pile 73 into the pillar of the hitting the hammer portion 72, the pin pile 73 is embedded in the depth of the seabed, and is subjected to the pin pile striking step so that the template jacket 70 frame is fixed to the sea. After the pin pile hitting step is performed, the first step is completed by performing a template jacket level adjusting step of adjusting the balance of the template jacket 70. All.

In the second step, the lag pile 50 is accommodated into the through hole of the upper template 71 fixed to the upper end of the template jacket 70, and after the lag pile injection step is performed, the lag pile 50 The second step is completed by hitting the upper end of the pile 50 with the hammer portion 72 and going through the lag pile hitting step to fix the lag pile 50 to the sea while the lag pile 50 is driven deep into the seabed.

In the third step, a hammer removal step of dismantling the hammer portion 72 from the upper template 71 is performed. After the hammer removal step is performed, the lag pile 50 rising to the upper template 71 is hit. ) And the lag pile level cutting step of securing the flatness of the upper template 71 is completed, thereby completing the third step.

In the fourth step, a template jacket removing step of disassembling the pillar and the upper template 71 of the template jacket 70 and drawing and removing the pin pile 73 is performed. After the template jacket removing step is performed, the lag is removed. The fourth step is completed by completing the file installation.

After the pile installation on the seabed is performed, as shown in FIGS. 9, 10 and 11, the installation of the superstructure on the pile at sea is performed.

In the installation phase of the superstructure on the pile,

A fifth step of accessing the ship; A sixth step including a scaffold injection step of the ship, a scaffold fixing step of the ship, and a lowering and welding superstructure; A seventh step of removing the ship; .

Referring to the installation step of the upper structure on the pile in detail as follows.

In the fifth step, the fifth step is completed by going through the vessel access step of approaching the vessel 30 to the lag pile 50 standing at sea.

In the sixth step, the scaffold 33 of the ship 30 is injected into the lag pile 50 through the scaffold injection step of the ship, and after the scaffold injection step of the ship is carried out, the scaffold 33 of the ship Is accurately positioned on the lag pile 50 so that the four legs 12b of the superstructure 10 are subjected to the scaffold fixing step of the ship, which is matched on each lag pile 50, and the scaffold fixing step of the ship is made. Afterwards, the first jack 23 and the second jack 24 of the skid shoe 20 are lowered so that four legs 12b of the upper structure 10 are inserted into each lag pile 50 to be caught and welded. The sixth step is completed by going through the lowering and welding step of the upper structure to be bonded to.

In the seventh step, the ship 30 includes a skid shoe 20 installed on the skid rail 32 of the scaffold 33, and the ship 30 is rotated in the installation space of the upper structure 10. The seventh step is completed.

As a result, a safe construction is achieved in which the upper structure 10 is installed at sea without using a crane.

DESCRIPTION OF THE REFERENCE SYMBOLS
10: upper structure 12: body
12a: binding portion 12b: leg
20: Skid Shoe 21: Saddle
22: upper frame 23: first jack
24: 2nd jack 25: the lower frame
26: engineering plastic 27: reinforcement guide
28: hinge guide
30: ship 31: deck
32: skid rail 33: scaffolding
40 beam 45 support piece
50: Lag Pile 60: Clamp
70: template jacket 71: upper template
72: hammer portion 73: pin pile

Claims (3)

In installing wind turbine superstructures at sea,
An installation step of the skid shoe in which the engineering plastic 26 formed at the bottom of the lower frame 25 of the skid shoe 20 is mounted on the skid rail 32 formed on the deck 31 of the ship 30; The beam on the skid shoe to install the beam 40 on one side of the upper frame 22 of the skid shoe 20 and to install the support piece 45 on the saddle 21 hinged to the other side of the upper frame 22; Installing a support piece; Two fasteners 12a, the body 12 of the upper structure 10, are fastened to the support pieces 45 installed on the saddle 21 of the skid shoe 20, and the other fasteners 12a are beamed. Mounting and fixing the upper structure to be attached to the 40 to fix the binding portion 12a with the clamp 60; A file installation step of finishing file installation on the seabed through a first step, a second step, a third step, and a fourth step; A step of installing the superstructure on the pile in which the installation of the superstructure on the pile at sea is completed through the fifth, sixth and seventh steps; Construction method of a three-lag wind turbine upper structure characterized in that it comprises a. The method of claim 1, wherein the first step is
A seabed inspection step of first checking the stress, deformation and flatness of the seabed ground to find out whether the pile is excavated; A template jacket setting step of assembling each column of the template jacket 70 into a rectangular frame and fixing the upper template 71 to be positioned at an upper end thereof; The pin pile 73 is inserted into the pillar of the template jacket 70 and then hits the hammer portion 72 to pin the pile pile 73 so that the template of the template jacket 70 is fixed to the sea. A blow step; A template jacket level adjusting step of adjusting the balance of the template jacket 70; Including,
The second step is
A lag pile injection step of receiving the lag pile 50 into the through hole of the upper template 71 fixed to the upper end of the template jacket 70; A lag pile striking step of hitting an upper end of the lag pile 50 with the hammer portion 72 to fix the lag pile 50 at sea while the lag pile 50 is embedded in the seabed; ≪ / RTI &
The third step is
A hammer removing step of dismantling the hammer portion 72 from the upper template 71; A lag pile level cutting step of cutting the lag pile 50 rising to the upper template 71 while striking to secure the flatness of the upper template 71; Including,
The fourth step is
A template jacket removing step of disassembling the pillar and the upper template 71 of the template jacket 70 and drawing out the pin pile 73; Construction method of the three-lag wind turbine upper structure, characterized in that consisting of. The method of claim 1, wherein the fifth step is
It is a ship access step to approach the ship 30 to the lag pile 50 standing on the sea; Will,
The sixth step is
A scaffold injection step of the ship to inject the scaffold 33 at the rear of the ship 30 between the lag piles 50; A scaffolding step of the ship, in which the scaffold 33 of the ship is accurately positioned on the lag pile 50 so that the four legs 12b of the superstructure 10 coincide on each lag pile 50; The first jack 23 and the second jack 24 of the skid shoe 20 are lowered so that the four legs 12b of the upper structure 10 are inserted into each of the lag piles 50 to be stuck and then bonded by welding. Forming a superstructure lowering and welding step; ≪ / RTI &
The seventh step is
A ship removal step of redirecting the vessel 30 in the installation space portion of the superstructure 10, including a skid shoe 20 installed on the skid rail 32 of the scaffold 33; Construction method of the three-lag wind turbine upper structure, characterized in that consisting of.

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