KR101599484B1

KR101599484B1 - Wind Turbine Tower, and Constructing Method thereof

Info

Publication number: KR101599484B1
Application number: KR1020150063677A
Authority: KR
Inventors: 김영진; 조정래; 진원종; 윤혜진; 김희석
Original assignee: 한국건설기술연구원
Priority date: 2015-05-07
Filing date: 2015-05-07
Publication date: 2016-03-09

Abstract

The present invention relates to a precast pillar segment-prefabricated wind power generation tower and a building method thereof, capable of facilitating the strong integration and smooth delivery of a vertical load by maximizing a contact area between upper and lower precast pillar segments without an increase in weight since a wind power generation tower structure is built by vertically laminating and assembling multiple precast pillar segments but each of the precast pillar segments is manufactured to reduce a wind load. The precast pillar segments include an upper disc (11) and a lower disc (12), which are placed to face each other.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pre-cast column segment assembly type wind turbine tower,

The present invention relates to a wind turbine tower having a wind turbine at the upper end thereof and a method of constructing the wind turbine tower. More specifically, a plurality of precast column segments are vertically stacked and assembled to construct a wind turbine tower structure, So that the contact area between the upper and lower precast column segments can be maximized without increasing the weight so that the vertical load can be smoothly transmitted and solidly integrated. &Quot; Precast column segment assembly type wind tower and its construction method "

An example of a conventional art in which a wind turbine tower, which is a column-shaped structure provided with a wind turbine, is divided into a plurality of segments each having a predetermined length in the vertical direction and assembled in the field is disclosed in Korean Patent Publication No. 10-1471265 .

FIG. 12 is a schematic half cross-sectional perspective view showing a construction for manufacturing a wind turbine tower in Korean Patent Publication No. 10-1471265. As shown in the drawing, in the prior art, there is proposed a construction in which a wind power tower is assembled into a plurality of divided bodies. Such a prior art wind power tower is divided into a plurality of cylindrical tower sections in the longitudinal direction, and each tower section has a configuration in which a plurality of segments are assembled in the lateral direction.

In the case of a wind turbine tower having an assembled structure, in order to transmit axial force smoothly between members positioned vertically downward (corresponding to a "tower section" in the prior art), the contact area between the upper and lower members The larger is the advantage. That is, in the case of the prior art shown in Fig. 12, the larger the upper and lower sections of the tower section are, the more advantageous it is. However, in the prior art, since the tower section is made of the cylindrical member by the assembly of the divided body, the thickness of the tower section is necessarily increased in order to increase the contact area between the upper and lower members, The thickness of the divided body should be increased. However, when the thickness of the divided body is increased, the weight of the divided body increases, which makes it difficult to carry and handle, and the cost and the like also increase. Particularly, since there is a limit to increase the weight of the divided body, there is a limit to increase of the contact area between the upper and lower members by increasing the thickness of the divided body, that is, increasing the thickness of the tower section.

On the other hand, wind power towers are affected by wind wind loads. However, in the case of the above-described prior art, since the completed wind turbine tower is a cylindrical structure, the area of the wind direction is large and the wind load is forced to act accordingly. As a result, in the prior art, the required shear stress on the wind turbine tower is increased, which leads to an increase in the cross-sectional area and accordingly, an increase in the size and weight of the member.

Korean Registered Patent No. 10-1471265 (Announcement 2014. 12. 09).

The present invention has been developed in order to overcome the problems and limitations of the prior art as described above, and it is an object of the present invention to provide a wind turbine tower in which a wind tower is divided into a plurality of segments each having a predetermined length in a vertical direction, It is possible to increase the contact area between the segments and to strengthen smooth integration between the segments and minimize the increase in the weight and size of the segment itself, thereby reducing the transportation and handling difficulties and thus reducing the cost and time. And to make it possible.

Further, the present invention minimizes the lateral area of the segment to which the wind is applied, thereby reducing the wind load acting on the segment, thereby minimizing the required stress on the wind tower and thus enabling economical design .

In order to achieve the above object, according to the present invention, there is provided a wind turbine tower which is constructed by stacking a plurality of precast column segments and integrating them, wherein the precast column segment is composed of a member in the form of a ring having a width in the horizontal direction, And a plurality of column members having a hollow and being vertically disposed between the upper and lower circular plates and integrally formed with the upper and lower circular plates, wherein the upper and lower circular plates are arranged to face each other with a gap therebetween; The precast column segments are stacked such that in the upper disk of the precast column segments located below, the lower disk of the upper precast column segment lies; The column members positioned in a straight line in the vertical direction in the stacked precast column segments are continuously disposed in the hollow interior and are tightly fixed so that the precast column segments are integrated by the tension members. / RTI >

In order to achieve the above-mentioned object, the present invention also provides an upper and a lower circular plate made of a ring-shaped member having a width in the horizontal direction and arranged to face each other with an interval in the vertical direction, A precast column segment having a structure including a plurality of column members arranged vertically between the discs and integral with the upper and lower discs; A plurality of precast column segments are sequentially stacked on the upper original plate of the precast column segment located below the lower precursor column segment so that the lower original plate of the upper precast column segment is placed; Wherein the prestressed column segment is integrated with the prestressed column segment by tensioning and fixing the prestressed material within the hollow interior of the column member positioned in a straight line in the vertical direction in the stacked precast column segments. Method is provided.

In the above-described wind turbine tower and its construction method, the column members are inclined from each precast column segment, and the precast column segment can have a tapered shape that narrows from the bottom to the top, The number of column members provided in each precast column segment may gradually decrease from the bottom to the top. In the case of a plurality of pre-cast column segments, when the column members are in line with each other, the upper ends of the prestressing members after the prestressing members are passed through the straight- The lower end of the tension member may be fixed to the lower surface of the upper original plate of the lower segment which is not continuous with the column member.

According to the present invention, in constructing the wind power generation tower, even if increasing the horizontal direction width of the upper and lower original plates in order to increase the contact area between the upper and lower precast column segments constituting the wind power generation tower, It is possible to increase the horizontal width of the upper and lower circular plates freely without increasing the weight of the precast column segment so that the upper and lower precast column segments for smooth transmission of the vertical direction force A sufficient contact area can be ensured.

That is, the present invention increases the contact area between precast column segments to secure a sufficient contact area between the upper and lower segments for smooth transmission of the vertical direction force, thereby enhancing smooth axial force transmission between the precast column segments and solid integration, It is possible to minimize the increase in the weight and the size of the cast column segment itself, thereby greatly reducing the difficulty in transportation and handling, thereby reducing the transportation-handling cost and time, thereby enabling economical construction.

Particularly, since the present invention is constituted by a pillar member, an area in which the wind in the lateral direction is blown is significantly smaller than in the prior art, and therefore the lateral force according to the wind load acting on the wind power tower can be largely reduced, It is possible to construct a very economical wind power tower by minimizing the required stress on the tower.

1 is a schematic perspective view of a wind turbine tower according to the present invention.
2 is a schematic exploded perspective view of a wind turbine tower according to the present invention.
FIG. 3 and FIG. 4 are schematic perspective views showing different directions of an example of a segment constituting the wind turbine tower of the present invention.
5 is a schematic cross-sectional view along line AA in Fig.
Fig. 6 is a schematic perspective view showing an example of fixing a tension member disposed on a pillar member of a segment located in a lower layer. Fig.
Fig. 7 is a schematic exploded perspective view of a segment-joining portion showing a process of joining two segments positioned above and below by a tension member. Fig.
8 is an assembled perspective view after two segments are combined in the present invention.
9 is a schematic side view of a wind turbine tower of the present invention for showing a first embodiment of a tilting arrangement.
10 is a schematic side view of a wind turbine tower of the present invention corresponding to Fig. 9 for illustrating a second embodiment of a tilting arrangement.
11 is a schematic side view of a wind turbine tower of the present invention corresponding to Fig. 9 for showing a third embodiment of a tilting arrangement.
12 is a schematic half cross-sectional perspective view showing a construction for manufacturing a wind turbine tower according to the prior art.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Although the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the technical idea of the present invention and its essential structure and operation are not limited thereby. In particular, although the present invention has been described in its entirety as a wind turbine tower for installing a wind turbine, this wind turbine tower can also be used as a transmission tower. Therefore, it should be understood that the "wind power generation tower" of the present invention includes those used as transmission towers in addition to those used for installing wind turbines.

FIG. 1 is a schematic perspective view of a wind turbine tower 100 according to the present invention, and FIG. 2 is a schematic exploded perspective view of a wind turbine tower 100 according to the present invention.

The wind power generator tower 100 according to the present invention has a structure in which a plurality of precast column segments preliminarily manufactured in the factory have a predetermined vertical height and are sequentially stacked and assembled integrally in the vertical direction. The "precast column segment " forming wind power tower 100 herein is abbreviated as" segment "for convenience. When a segment is referred to collectively, reference numeral 1 is used to designate "segment (1)". In the case of individually designating each segment sequentially stacked in the vertical direction, Are sequentially described in the form of "first segment 1a", "second segment 1b" and "third segment 1c". In the case of the embodiment illustrated in the figures, the wind turbine tower 100 of the present invention is constructed by three segments, but the number of segments used to construct the wind turbine tower 100 is not limited thereto. For simplicity, only a plurality of segments are shown in FIG. 2 in a separated state, and a tension member for integrating the segments and a wind turbine are not shown.

3 and 4 show a schematic perspective view showing a different view of an example of the segment 1 constituting the wind power generator tower 100 of the present invention. Are shown in cross section.

The segment 1 has an upper circular plate 11 and a lower circular plate 12 which are made of a ring-shaped member having a width in the horizontal direction and arranged to face each other at intervals in the vertical direction, and a hollow 130 And a plurality of column members 13 integrally formed with the upper and lower original plates 11 and 12 and vertically disposed between the upper and lower original plates 11 and 12.

The column member 13 is a member having the hollow 130 formed therein. Both ends of the column member 13 in the vertical direction are integrally joined to the upper and lower circular plates 11 and 12, respectively. The upper and lower circular disks 11 and 12 are plate members having a certain thickness, and are formed in a ring shape having a predetermined width in the horizontal direction. Through holes 14 communicating with the hollow portion 130 of the column member 13 are formed at positions where both ends of the column member 13 in the vertical direction of the upper and lower original plates 11 and 12 are respectively engaged.

The upper and lower circular disks 11 and 12 preferably have a circular shape in plan view, but are not limited thereto, and may be in the form of an elliptical ring member in a plan view, or a polygonal ring member. Although the term "disc" is used herein for convenience, it should be understood that it is collectively referred to as circular, elliptical, and polygonal ring member shapes. Therefore, in this specification, the term "circumferential direction" should also be understood as a direction of travel along the flat surface of the upper and lower circular plates 11 and 12 when viewed in plan.

In the segment (1) of the present invention, a plurality of column members (13) are arranged at intervals in the circumferential direction of the upper and lower circular plates (11, 12). In particular, as shown in the figure, the circumference of the upper circular plate 11 is smaller than the circumference of the lower circular plate 12. Accordingly, the plurality of column members 13 are arranged to be inclined so that the segment 1 has a tapered shape that is gradually expanded from top to bottom, that is, from bottom to top.

In the segment 1 of the present invention, it is preferable that the number of the pillar members 13 provided in each segment gradually decreases from the bottom to the top in the vertical direction. That is, it is preferable that the number of the column members 13 provided in the second segment 1b positioned on the first segment 1a located at the lowermost position is smaller than the number of the column members 13 provided in the lowermost first segment 1a will be. Of course, the column member 13 provided in the third segment 1c positioned above the second segment 1b becomes smaller than the second segment 1b. However, the number of the column members 13 disposed in each segment in the present invention is not limited to such a variation. Although the number of the column members 13 provided in each segment may be the same, it is more advantageous in terms of weight reduction, production cost reduction, etc. that the number of the column members 13 decreases gradually in the vertical direction as described above.

The column member 13 can be made of a hollow precast concrete member. For example, after the column member 13 is manufactured, the both ends of the column member 13 are placed in a mold The upper and lower circular plates 11 and 12 can be made into a segment that is integrated by concrete by forming the upper and lower circular plates 11 and 12 by pouring the concrete. Of course, even when the pillar member 13 is made of steel or other materials, it is possible to manufacture a segment by integrating both ends of the pillar member 13 so as to be embedded in the concrete of the upper and lower circular disks 11 and 12. [

In the following, an embodiment of a concrete method step of assembling segments to construct the wind turbine tower 100 of the present invention will be described.

In the present invention, a tension member 5 such as a tent is used to integrally assemble a plurality of vertically stacked segments. The tension member 5 is inserted into the hollow portion 130 of the column member 13 to be disposed over the plurality of segments and fixed at both ends thereof so that the plurality of segments are integrally joined by the tension member 5 .

In the following, a description will be given of a construction in which the wind power generation tower 100 is constructed by integrating the segments by using a tension material in the present invention, by exemplifying the coupling relationship between the first segment 1a and the second segment 1b.

Fig. 6 shows a schematic perspective view showing an example of fixing a tension member 5 arranged on a column member of a segment located below. In Fig. 7, two segments located at the top and the bottom are fixed by a tension member 5 A schematic exploded perspective view of the segment coupling portion showing the coupling process is shown, and FIG. 8 shows an assembled perspective view after the two segments are combined following the state of FIG. The straining material 5 is disposed through the hollow 130 formed in the column member 13 of the first segment 1a. The lower end of the tension member 5 is fixed after passing through the through hole 14 formed in the lower circular plate 12 of the first segment 1a. As illustrated in the figure, the lower end of the tension member 5 is fastened to the fixing hole 50, The fusing plate 51 can be fixed. As a matter of course, since the lowest segment, that is, the first segment 1a is placed on the base member 9, the lower end of the tension member 5 may penetrate to the base member 9, 9). &Lt; / RTI >

The first segment 1a and the second segment 1b have different numbers of the pillar members 13, respectively. Therefore, when the second segment 1b is disposed on the first segment 1a, a part of the column member 13 of the first segment 1a is arranged in a straight line with the column member 13 of the second segment 1b However, a part of the column member 13 of the segment 1a is located at a position displaced from the column member 13 of the second segment 1b.

7 and 8 show the tension member 5 at the position of the column member 13 of the first segment 1a located at a position displaced from the column member 13 of the second segment 1b, Lt; / RTI > is shown. When the positions of the column member 13 of the first segment 1a and the column member 13 of the second segment 1b are not straight, the tension member 5 passes through the hollow 130, Through holes formed in the upper circular plate 11 of the first segment 1a and through holes formed in the lower circular plate 12 of the second segment 1b so that the upper end of the tension member 5 is passed through the second segment 1b of the lower disk 12. The tension member 5 protruding above the lower disk 12 of the second segment 1b is fixed on the upper surface of the lower disk 12 of the second segment 1b in a tense state. A fixing plate 51 is disposed on the lower disk 12 of the second segment 1b and the upper end of the tension member 5 penetrates through the fixing plate 51 and is fastened to the fixing port 50, And can be fixed to the plate 51.

As described above, in the present invention, the tension member 5 is placed over the two segments in a state in which the lower disk 12 of the second segment 1b is placed on the upper disk 11 of the first segment 1a, So that the two segments are joined together with a tension acting therebetween. Therefore, the compressive force in the vertical direction is smoothly transmitted to the upper and lower segments by the large area contact between the upper and lower circular plates 11 and 12, and the tensile force generated by the flexural load is supported by the tension members 5 So that the two segments are very tightly coupled.

On the other hand, when the second segment 1b is disposed on the first segment 1a, the column member 13 of the first segment 1a and the column member 13 of the second segment 1b are arranged in a straight line The tension member 5 disposed through the hollow 130 formed in the column member 13 of the first segment 1a is inserted into the through hole formed in the upper circular plate 11 of the first segment 1a, The through holes formed in the lower circular plate 12 of the second segment 1b in the continuous position are successively passed successively and then continued to the hollow 130 formed in the column member 13 of the second segment 1b Passes through the lower circular plate 12 of the third segment 1c placed on the second segment 1b and then passes through the lower circular plate 12 of the third segment 1c, And a method using a plate 51 or the like.

If the column member 13 of the first segment 1a, the column member 13 of the second segment 1b and the column member 13 of the third segment 1c are arranged on a straight line, The tension member 5 penetrating the column member 13 of the first segment 1a and the column member 13 of the second segment 1b penetrates the column member 13 of the third segment 1c, Can be tightly fixed on the upper surface of the upper circular plate 11 of the lower plate 1c.

In the present invention, as described above, the number of column members provided in the upper and lower segments is different. Therefore, when arranging the tension members, they can be arranged in various forms as follows.

9 shows a schematic side view of a wind turbine tower 100 of the present invention showing a first embodiment of the arrangement of tensions. In Fig. 9, in order to show the arrangement of the tensions, Tension material was simplified by solid lines. Particularly, in the embodiment of Fig. 9, the "first tensions 5a", "the second tensions 5b" and "the first tensions 5b" are used to distinguish the tensions, Quot; and "third tensile material 5c ".

As shown in FIG. 9, some of the tensions, that is, the third tensions 5c, may be disposed over all the segments that are stacked. Specifically, the lower end of the third tensional element 5c may be fixed to the bottom surface of the lower disk 12 of the first segment 1a as shown in Fig. 9, a concave portion is formed on the base member 9, a lower disk 12 of the first segment 1a to which the lower end of the third tensional element 5c is fixed is disposed in a concave portion, So that the base member 9 and the first segment 1a are integrated. However, the configuration in which the first segment 1a is integrated with the base member 9 is not limited to this. In the case of fixing the lower end of the tension member arranged in the first segment 1a as well, the lower end of the tension member passes through the lower circular plate 12 of the first segment 1a, And the lower end of the tension member may be fixed at the lower surface of the base member 9.

In FIG. 9, the third tensional element 5c includes a column member 13 of a first segment 1a, a column member 13 of a second segment 1b, and a column member 13 of a third segment 1c, After passing through all the column members 13, the upper end thereof is fixed on the upper surface of the upper circular plate 11 of the third segment 1c. On the other hand, the second tensional element 5b penetrates the column member 13 of the first segment 1a and the column member 13 of the second segment 1b located on a straight line, And is fixed on the upper surface of the lower circular plate 12 of the lower plate 1c. The first tensional material 5a passes through only the column member 13 of the first segment 1a and its upper end is fixed on the upper surface of the lower circular plate 12 of the second segment 1b.

Thus, in the case of a plurality of stacked segments, when the column members are in line with each other, the upper end of the tension member is no longer continuous with the upper column segment, And the lower end of the tension member can be fixed to the lower surface of the upper original plate of the lower layer segment where the pillar members are not continuous.

10 is a schematic side view of a wind turbine tower 100 of the present invention corresponding to FIG. 9 for showing a second embodiment of the arrangement of tensions. In FIG. 10, in order to show the arrangement of the tensions, (3) is shown by a solid line. In particular, FIG. 10 illustrates that the segments are arranged in four layers.

In the embodiment of Fig. 10, the tensions are arranged across the plurality of segments but not over all of the segments. 10, the first tensional element 5a is arranged to penetrate only the column member 13 of the first segment 1a similarly to the case of Fig. 9. The lower end of the first tensional element 5a is connected to the first segment 1a And the upper end of the first tension member 5a is fixed on the upper surface of the lower circular plate 12 of the second segment 1b. The second tautest member 5b is disposed over the column member of the first segment 1a and the column member of the second segment 1b. The lower end of the second tensional element 5b is fixed to the lower surface of the lower circular plate 12 of the first segment 1a or the base member 9 and the upper end of the second tensional element 5b is fixed to the lower surface of the lower segment 12 of the third segment 1c And is fixed on the upper surface of the lower original plate 12.

The third torsion spring 5c is disposed over the column member of the second segment 1b and the column member of the third segment 1c. The lower end of the third tensional element 5c is fixed at the lower surface of the upper circular plate 11 of the first segment 1a and the upper end of the third tensional element 5c is fixed to the upper surface of the lower circular plate 12 of the fourth segment 1d . The fourth tensional element 5d is disposed over the upper two segments, that is, the column member of the third segment 1c and the column member of the fourth segment 1d. The lower end of the fourth tensional material 5d is fixed on the lower surface of the upper circular plate 11 of the second segment 1b and the upper end of the fourth tensional material 5d is fixed on the upper surface 11c of the upper circular plate 11 of the fourth segment 1d, . The arrangement example of the tension member illustrated in Fig. 10 has no column member positioned on a straight line with respect to the entire plurality of segments, but can be usefully used when there is a linear arrangement of column members between some segment layers.

11 is a schematic side view of a wind turbine tower 100 of the present invention corresponding to FIG. 9 for showing a third embodiment of the arrangement of tensions. In FIG. 11, in order to show the arrangement of the tensions, (3) is shown by a solid line.

In the case of the embodiment shown in Fig. 11, each tension member is disposed in the column member only for one segment. That is to say, the first tensional element 5a is arranged to pass through only the column member 13 of the first segment 1a, and the lower end of the first tensional element 5a is connected to the lower original plate 12 of the first segment 1a, And the upper end of the first tension member 5a is fixed on the upper surface of the lower disk 12 of the second segment 1b.

The lower end of the second tension member 5b is fixed to the lower surface of the upper circular plate 11 of the first segment 1a and the lower end of the second tension member 5b is fixed to the upper surface of the upper circular plate 11, The upper end of the second taut material 5b is fixed on the upper surface of the lower disk 12 of the third segment 1c. The third torsion spring 5c is disposed only in the column member 13 of the third segment 1c and the lower end of the third torsion spring 5c is fixed to the lower surface of the upper circular plate 11 of the second segment 1b , And the upper end of the third tensional element 5c is fixed on the upper surface of the upper circular plate 11 of the third segment 1c.

In the case of the embodiment shown in FIG. 9, it is advantageous when a part of the tension material is disposed over all of the stacked segments, so that when the segments are stacked, at least a part of the column members of each segment are aligned and aligned with each other . In the embodiment shown in Fig. 10, there is no columnar member positioned on a straight line with respect to the entire plurality of segments, but it can be usefully used when there is a linear arrangement of the columnar members between some of the segmental layers. In the case of the embodiment shown in Fig. 11, it is advantageous when the positions of the column members of the upper and lower segments are deviated from each other. Therefore, the embodiment of FIGS. 9 to 11 can be selectively applied according to the situation. That is, in the present invention, when a plurality of segments are stacked and integrally joined together, when the column member is positioned on the straight line, the tension member is disposed through the entire column member so that the column member is no longer straight The segments may be integrated by using a tensile material in such a manner that the ends of the tensile material are fixed to the upper surface of the lower disk of the upper segment and the lower surface of the lower disk of the lower segment.

As described above, the wind tower of the present invention is formed by laminating a plurality of segments. Each of the segments has a disc shape in contact with each other, but each segment has a plurality of column members in the vertical direction Lt; / RTI > Accordingly, the vertical compressive force acting on the wind turbine tower is transmitted to the upper and lower segments through the surfaces of the discs contacting with each other. In the present invention, even when the weight of the segment is not increased, The contact area between the segments can be freely increased. In the prior art, since the upper and lower members have a cylindrical shape, in order to increase the contact area between the upper and lower members, the thickness of the entire cylindrical member must be increased to increase the weight of the member, As well as difficulties in transportation and handling, resulting in increased costs. However, in the present invention, even if the widths of the upper and lower circular plates are increased in order to increase the contact area between the upper and lower segments, the number and the size of the column members do not have to be proportional thereto. It is possible to increase the horizontal width of the upper and lower circular plates freely without securing a sufficient contact area between the upper and lower segments for smooth transmission of the vertical direction force. That is, according to the present invention, it is possible to secure a sufficient contact area between the upper and lower segments for smooth transfer of the vertical direction force without increasing manufacturing cost, difficulty in carrying and handling, and excessive cost It has advantages.

Particularly, in the prior art, there is a disadvantage in that the upper and lower members have a cylindrical shape, so that the area in which the wind in the lateral direction is applied is very large and accordingly a large lateral force acts. However, Is significantly smaller than that of the conventional art. Therefore, it is possible to greatly reduce the lateral force acting on the wind power towers, thereby making it possible to construct a very economical wind power tower.

1: Segment (precast column segment)
5: Tension material
11: Upper disc
12: Lower disk
13:
100: Wind power tower

Claims

A wind turbine tower (100) constructed by stacking a plurality of precast column segments on a base member (9) in a vertical direction and integrating them,
The precast column segment comprises an upper circular plate 11 and a lower circular plate 12, each of which is composed of a ring-shaped plate member having a width in the horizontal direction and arranged so as to face each other with an interval in the vertical direction; And a plurality of pillar members (13) having a hollow (130) and disposed standing between the upper and lower circular plates (11, 12) and integral with the upper and lower circular plates (11, 12);
Through holes 14 communicating with the hollow portion 130 of the column member 13 are formed at positions where both ends of the column member 13 in the vertical direction of the upper and lower original plates 11 and 12 are respectively engaged;
The lower original plate 12 of the precast column segment of the upper layer is placed on the upper original plate 11 of the precast column segment located below and the upper and lower original plates of the upper and lower precast column segments are in surface contact with each other, The column segments are laminated;
The tension member 5 is disposed in the column member 13 and is fixed to the fixing hole 50 through the fixing plate 51 disposed on the upper original plate 11 or the lower original plate 12 in a state in which the tension member 5 is tense And is fixed to the fixing plate 51,
In the column member 13, which is positioned in a straight line in the vertical direction in the stacked precast column segments, the tension member 5 passes through the hollow portion 130 of the plurality of column members 13 located on a straight line The upper end of the tension member 5 is fixed on the upper surface of the lower disk of the upper layer segment which is no longer continuous with the column member and the lower end of the tension member 5 is fixed on the lower surface of the upper surface of the lower layer of the lower layer segment, Wherein the prestressed column segments of the upper and lower layers are integrated by the prestressing material (5) by taut fixation of the prestressed material (5).

The method according to claim 1,
Characterized in that in each precast column segment the column members (3) are arranged obliquely such that the precast column segments have a tapered shape that narrows from the bottom to the top.

3. The method according to claim 1 or 2,
Characterized in that the number of column members (13) provided in each precast column segment decreases from the bottom to the top in the vertical direction.

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An upper circular plate 11 and a lower circular plate 12 which are made of a ring-shaped member having a width in the horizontal direction and arranged to face each other at intervals in the vertical direction, and upper and lower circular plates 11 And a plurality of column members 13 integrally formed with the upper and lower circular plates 11 and 12 arranged vertically between the upper and lower circular plates 11 and 12 of the column member 13, And a through hole (14) communicating with the hollow (130) of the column member (13) is formed at a position where both ends of the columnar member (13) are coupled to each other in the vertical direction;
The lower original plate 12 of the precast column segment located at the upper side is placed on the upper original plate 11 of the precast column segment located below and a plurality of the upper and lower original plates of the upper and lower precast column segments are in contact with each other Cast precursor column segments are sequentially stacked on the base member 9;
The prism sheet 5 is placed in the hollow 130 in the column member 13 which is positioned in a straight line in the vertical direction in the stacked precast column segments and the tension member 5 is placed in the upper plate 11, Or the tension member 5 is fastened to the fixing plate 51 by being fixed to the fixing plate 51 by being passed through the fixing plate 51 disposed on the lower original plate 12 and fixed to the fixing member 50, &Lt; / RTI >
When the column members 13 are aligned with each other in the plurality of pre-cast column segments, the tension members 5 are disposed in the hollows 130 of the column members 13 aligned in a straight line ;
The upper end of the penetratingly arranged tension member 5 is fixed to the upper surface of the lower disk of the upper layer segment which is no longer continuous with the column member and the lower end of the tension member 5 is fixed to the lower surface of the upper original plate of the lower layer segment, Wherein the wind power generator is installed in the wind tower.

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