KR20140137782A - Connection structure for tower-foundation of steel composite hollow reinforced concrete wind tower and connection method using thereof - Google Patents
Connection structure for tower-foundation of steel composite hollow reinforced concrete wind tower and connection method using thereof Download PDFInfo
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- KR20140137782A KR20140137782A KR1020130058752A KR20130058752A KR20140137782A KR 20140137782 A KR20140137782 A KR 20140137782A KR 1020130058752 A KR1020130058752 A KR 1020130058752A KR 20130058752 A KR20130058752 A KR 20130058752A KR 20140137782 A KR20140137782 A KR 20140137782A
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- tower
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- reinforced concrete
- steel pipe
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0039—Methods for placing the offshore structure
- E02B2017/0043—Placing the offshore structure on a pre-installed foundation structure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0091—Offshore structures for wind turbines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
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Abstract
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind tower and, more particularly, to a wind tower for efficiently joining a steel composite hollow reinforced concrete (RC) member to a foundation of a wind tower The present invention relates to a tower-foundation joint structure of a composite hollow reinforced concrete wind tower.
Further, the present invention relates to a tower-foundation joining method of a wind tower capable of efficiently joining a tower portion and a foundation portion of a wind tower using the tower-foundation joining structure of a steel composite hollow reinforced concrete wind tower as described above will be.
Generally, wind towers are constructed as large structures having an average height of 100 m or more, though they are different in height depending on their capacities.
In addition, in the case of a steel pipe wind tower which is widely applied at present, it is advantageous that it is easy to be applied to a foundation of a wind tower previously installed on the land and sea.
Here, as a method of forming a tower portion using a steel pipe as described above, a method of using a method of forming a bridge pier of a bridge as previously proposed by the present inventors can be considered.
More specifically, as a prior art example of forming a column using a steel pipe, for example, a "joining structure of an internally constrained hollow reinforced concrete column as disclosed in Japanese Patent Registration No. 10-1166549 (Jul. 11, 2012) .
More specifically, the bonding structure of the internally constrained hollow reinforced concrete column shown in the Japanese Patent No. 10-1166549 is characterized in that an internally constrained hollow reinforced concrete column having an inner steel pipe with a flange at its end is fixed to the base portion or the coping portion The present invention relates to a joining structure of an internally constrained hollow reinforced concrete column having an excellent binding force by fixing an anchor bolt.
To this end, according to the above-mentioned Japanese Patent No. 10-1166549, hollow hollow portions are formed along the central axis in the concrete body in which the axial cast iron and the transverse reinforcing steel are laid, and the inner steel pipe is joined to the inner side of the concrete body And an inner confined hollow reinforced concrete column for restraining the concrete body; The axial main shaft of the concrete body extends to the base portion and is bound to the load bearing reinforcing bars of the base portion; A flange having a plurality of through holes formed at an end of the inner steel pipe in contact with the base portion; A joint structure of an internally constrained hollow reinforced concrete column including a plurality of anchor bolts whose one end is fixed to the base and whose other end is fitted to the through hole of the flange and is fastened and fixed by a nut.
As another example of the conventional technique for forming a column using a steel pipe as described above, there is a method of forming a column using a steel pipe as disclosed in Korean Patent No. 10-1045805 (June 27, 2011) And a method of constructing the same using a corrugated steel pipe as shown in Patent Registration No. 10-1055672 (Aug. 23, 2011), and a method of constructing the same. And a steel composite hollow precast pier joint structure using a concrete filling unit and a construction method thereof, as disclosed in Japanese Patent Application Laid-Open No. 10-2011-0103000 (Sep. 20, 2011) "Prefabricated hollow segment piers" as shown in Fig.
However, in the construction of the wind tower, since the construction site of the wind tower is mainly located in the mountain area or the sea, the prefabricated column construction method proposed for the existing bridges is applied to the wind tower There is a problem that it is very difficult to do.
That is, in order to apply a steel composite hollow reinforced concrete member to a wind power tower, a joint portion for joining a tower portion made of a steel-made hollow reinforced concrete member with a base portion of a wind tower previously installed on the land and sea is necessarily required.
However, as shown in the above-mentioned prior arts, in the case of a conventional tower-based junction structure in which a site is installed, since the wind tower site is mainly located in the mountain or sea, There is a problem that it is impossible to do.
As described above, the wind tower is basically very small in the field installation, and it is necessary to move the tower module to the site after the foundation is first installed, and to join the site in the field. However, Since the structure and construction methods of the columns are proposed, it is necessary to cast everything from the foundation to the pillar. Therefore, there is a limit to apply the conventional method to the wind tower located in mountain or sea.
Therefore, in order to solve the problems of the conventional art as described above, a steel composite hollow RC module for forming a tower part is made in advance in a factory, and is transported to a site to be connected to a base part in the field, It is desirable to provide a tower-foundation joint structure of a new wind tower capable of easily constructing a wind tower, and a new joint method using such a structure. However, a structure or a method satisfying all of such requirements has not yet been provided to be.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a wind power tower which is installed mainly on land and on the sea due to the necessity of putting in the field, A tower-foundation joint structure of a steel composite hollow reinforced concrete wind tower which is constructed so that the tower portion and base portion of the wind tower can be easily joined effectively without the need for spotting, and a steel using such a joint structure And to provide a tower-foundation joining method of a composite hollow reinforced concrete wind tower.
Another object of the present invention is to make it possible to modularize the steel composite hollow RC tower by being constructed so that the tower part of the wind tower can be easily joined to the foundation part without the need for spotting in the field, A tower-base joint structure of a steel composite hollow reinforced concrete wind tower capable of improving workability and economical efficiency in joining a foundation and a foundation, and a tower-foundation joint method of a steel composite hollow reinforced concrete wind tower using such a joint structure .
In order to achieve the above-mentioned object, according to the present invention, a base for supporting a steel composite hollow reinforced concrete wind tower and a tower part joined to the upper surface of the foundation can be joined without the need for site installation In a tower-based joint structure of a steel composite hollow reinforced concrete wind tower configured to be able to modularize the wind tower and to improve workability and economical efficiency when the tower section and the foundation section are joined to each other , The tower portion includes a lower base plate having a joint surface joined to an upper end surface of the base portion and having a plurality of through holes formed along the circumference thereof; An upper base plate having a hollow circular ring shape and disposed at a predetermined interval on the lower base plate and having a plurality of through holes formed at positions corresponding to positions of the through holes of the lower base plate; An inner steel pipe installed on the lower base plate through welding; A plurality of weld couplers disposed along an outer circumferential surface of the inner steel pipe; A longitudinal bar coupled to each of said weld couplers; A plurality of transverse reinforcing bars disposed laterally on the outer peripheral surface of the longitudinal reinforcing bars; A cover concrete forming an outer wall surrounding the inner steel pipe, the longitudinal reinforcement and the transverse reinforcement; An outer steel pipe disposed on an outer circumferential surface of the coated concrete to have a length greater than a height from the lower base plate to at least the upper base plate to join the upper base plate by welding; A plurality of coupling bolts inserted into the respective through holes of the upper base plate and the lower base plate to join the base and the tower; And fixing means for fixing the respective coupling bolts, wherein the tower portion is previously formed at a separate place during installation of the base portion, and then the plurality of through-holes formed in the lower base plate and the plurality of through- And the base portion and the tower portion can be joined to each other only by a bolt operation without the need to perform a site casting operation by inserting the coupling bolts through holes and fixing them simultaneously in the vertical direction by using the fixing means. A tower-foundation bonding structure of a hollow reinforced concrete wind tower is provided.
The welded coupler and the through-hole are arranged in the circumferential direction of the lower base plate, and the welded coupler and the through- And a plurality of them are arranged at regular intervals.
The joining structure may further include a plurality of connecting plates installed between the respective welded couplers by using steel plates for integrally connecting the inner steel pipe and the outer steel pipe, The inner steel pipe and the connecting plate can be integrally moved.
The joining structure may further include a support plate installed to the left and right sides of each through hole using a steel plate to serve as a reinforcing member for preventing buckling, So that the occurrence of local buckling can be prevented when the joint bolts are inserted into the respective through holes.
The joining structure is characterized in that when the base portion is hollow when joining the tower portion and the base portion, bolt joining is also performed inside the tower portion and the base portion.
Further, according to the present invention, a base for supporting a steel composite hollow reinforced concrete wind power tower and a tower portion joined to an upper end surface of the foundation portion can be joined to each other without the need for site casting, so that the wind tower can be modularized The present invention provides a tower-based joint structure of a steel composite hollow reinforced concrete wind tower configured to improve workability and economical efficiency at the time of joining the tower portion and the foundation portion, And a rib plate provided on both left and right sides of each of the through holes and serving as a support plate for preventing local buckling so as to form a joint surface joined to the upper end surface of the base portion, plate; An inner steel pipe installed on the lower base plate through welding; A plurality of weld couplers disposed along an outer circumferential surface of the inner steel pipe; A longitudinal bar coupled to each of said weld couplers; A plurality of transverse reinforcing bars disposed laterally on the outer peripheral surface of the longitudinal reinforcing bars; A cover concrete forming an outer wall surrounding the inner steel pipe, the longitudinal reinforcement and the transverse reinforcement; An outer steel pipe installed at a predetermined height from the lower base plate on an outer circumferential surface of the coated concrete; A plurality of coupling bolts inserted into the respective through holes of the lower base plate to join the base portion and the tower portion; And fixing means for fixing the respective coupling bolts, wherein the tower portion is formed in advance at a separate place during installation of the base portion, and then, The base portion and the tower portion can be joined to each other only by a bolt operation by inserting bolts and fixing them using the fixing means.
Here, the rib plate is formed of a rectangular steel plate and two adjacent sides are respectively welded to the outer steel pipe and the lower base plate, and the outer steel pipe is configured to be installed at least above the height of the rib plate .
Further, in the lower base plate, the inner steel pipe, the weld coupler, the outer steel pipe, and the through hole are disposed in order from the center, respectively, and each of the weld coupler and the through hole is formed along the circumferential direction of the lower base plate And a plurality of them are arranged at regular intervals.
The joining structure may further include a plurality of connecting plates installed between the respective welded couplers by using steel plates for integrally connecting the inner steel pipe and the outer steel pipe, The inner steel pipe and the connecting plate can be integrally moved.
The joining structure is characterized in that when the base portion is hollow when joining the tower portion and the base portion, bolt joining is also performed inside the tower portion and the base portion.
In addition, according to the present invention, by joining the tower portion and the base portion of the steel composite hollow reinforced concrete wind tower using the tower-foundation joint structure of the steel composite hollow reinforced concrete wind tower described above, The present invention is not limited to the configuration in which the wind tower can be modularized and the construction and economical efficiency can be improved when joining the tower portion and the foundation portion, And a tower-foundation joining method of a steel composite hollow reinforced concrete wind tower is provided.
As described above, according to the present invention, there is provided a tower-foundation joint structure of a steel composite hollow reinforced concrete wind tower which is constructed so that the tower portion and the foundation portion of the wind tower can be easily joined efficiently, It is possible to solve the problems of the prior art in which there is a great limitation to apply to a wind tower which is installed mainly on land and in the sea due to the necessity of putting in the field by providing a tower- foundation joining method of a steel composite hollow reinforced concrete wind tower using have.
Further, according to the present invention, there is provided a tower-base joint structure of a steel composite hollow reinforced concrete wind tower configured to be capable of efficiently joining a tower portion and a foundation portion of a wind tower without the need for spotting as described above, It is possible to modularize steel composite hollow RC towers by providing a tower-foundation joining method of steel composite hollow reinforced concrete wind towers using the structure. In addition to this, it is possible to improve the workability and economical efficiency in joining the tower part and the foundation .
In addition, according to the present invention, there is provided a tower-based joint structure of a steel composite hollow reinforced concrete wind tower configured to be capable of efficiently joining a tower portion and a foundation portion of a wind tower efficiently, The present invention provides a tower-foundation joining method of a steel composite hollow reinforced concrete wind tower using a steel composite hollow fiber reinforced concrete (RC) Can be solved.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view schematically showing the overall construction of a steel composite hollow reinforced concrete. Fig.
FIG. 2 is a view schematically showing the overall structure of a tower-foundation joint structure of a steel composite hollow reinforced concrete wind tower according to a first embodiment of the present invention.
FIG. 3 is a plan view showing a concrete structure of a lower base plate of a tower-foundation joint structure of a steel composite hollow reinforced concrete wind tower according to a first embodiment of the present invention shown in FIG.
4 is a view schematically showing the overall structure of a tower-foundation joint structure of a steel composite hollow reinforced concrete wind tower according to a second embodiment of the present invention.
5 is a view schematically showing the construction of a coupling portion of a tower-foundation joint structure of a steel composite hollow reinforced concrete wind tower according to a third embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, with reference to the accompanying drawings, concrete embodiments of a tower-foundation joint structure of a steel composite hollow reinforced concrete wind tower according to the present invention and a joining method using the same will be described.
Hereinafter, it is to be noted that the following description is only an embodiment for carrying out the present invention, and the present invention is not limited to the contents of the embodiments described below.
In the following description of the embodiments of the present invention, parts that are the same as or similar to those of the prior art, or which can be easily understood and practiced by a person skilled in the art, It is important to bear in mind that we omit.
That is, in order to solve the problems of the prior art in which there is a great limitation to apply to a wind tower which is installed mainly on land and on the sea, as it will be described later, as described later, Based joint structure of a steel composite hollow reinforced concrete wind tower configured to easily connect a tower portion and a base portion of a wind power tower to a tower-foundation joint method of a steel composite hollow reinforced concrete wind tower using such a joint structure .
Further, the present invention is configured so that the tower portion of the wind tower can be easily joined to the foundation portion without the need for spotting, as described later, thereby making it possible to modularize the steel composite hollow RC tower , A tower-base joint structure of a steel composite hollow reinforced concrete wind tower capable of improving workability and economic efficiency in joining a tower portion and a foundation portion, and a tower-foundation joint of a steel composite hollow reinforced concrete wind tower using such a joint structure ≪ / RTI >
Next, with reference to the accompanying drawings, the concrete structure of the tower-foundation joint structure of the steel composite hollow reinforced concrete wind tower according to the present invention and the joining method using the same will be described.
First, referring to FIG. 1, FIG. 1 is a cross-sectional view schematically showing the overall construction of a steel composite hollow reinforced concrete.
As shown in Fig. 1, the cross section of the steel composite
Here, the members connected in the longitudinal direction are the
That is, the present invention proposes a tower-base joint for completely modularizing the steel composite hollow RC wind tower, and for this purpose, in order to efficiently join the steel composite hollow RC wind tower to the foundation, It is preferable to construct a bonding structure of the tower portion and the base portion so that the most commonly used bolt joining process can be applied.
Therefore, in the embodiment of the present invention described below, the present invention will be explained by taking the case where the junction structure of the tower portion and the base portion is formed through the bolt connection, but the present invention is not necessarily limited to such a bolt connection structure, It should be noted that any other form or manner of tower-based bonding structure may be applied as needed.
Next, with reference to FIG. 2, a concrete structure of the tower-foundation joint structure of the steel composite hollow reinforced concrete wind tower according to the first embodiment of the present invention will be described.
That is, referring to FIG. 2, FIG. 2 is a view schematically showing the overall structure of a tower-foundation joint structure of a steel composite hollow reinforced concrete wind tower according to a first embodiment of the present invention.
More specifically, as shown in FIG. 2, the tower-foundation
Here, the above-mentioned
Therefore, through the above-described structure, the
At this time, a reinforcing material is inserted between the through holes formed in the
3, the overall structure of the
More specifically, as shown in Fig. 3, the
Between each of the
3, a
Therefore, according to the structure of the connecting
Here, the present invention constitutes the
That is, referring to FIG. 4, FIG. 4 is a view schematically showing the overall structure of a tower-foundation
More specifically, as shown in FIG. 4, the tower-
Therefore, by joining the
In addition, the remaining parts are the same as those in the first embodiment except for the above-mentioned contents, and therefore, a detailed description thereof will be omitted here for brevity.
Next, referring to FIG. 5, FIG. 5 is a view schematically showing the construction of a tower-foundation
More specifically, as shown in Fig. 5, the tower-
5, the tower-foundation
5, the
Although not shown in the drawings, the fourth embodiment of the present invention is similar to the second embodiment of the present invention shown in Fig. 2 except that the structure as shown in Fig. 5 is installed both outside and inside of the tower .
In addition, in the third and fourth embodiments of the present invention as described above, the remaining parts are the same as those of the first and second embodiments, and therefore, for the sake of brevity, It is omitted.
Next, a tower-foundation joining method of the steel composite hollow reinforced concrete wind tower using the tower-foundation joining structure of the steel composite hollow reinforced concrete wind tower according to the present invention constructed as described above will be described as follows .
More specifically, first, the inner tube is welded to the lower base plate, and then the weld coupler for connecting the longitudinal bars is welded to the lower plate through welding along the outer circumferential surface of the inner tube.
Next, the outer tube is welded to the lower base plate by welding at a height slightly higher than the height of the upper base plate, and then the upper base plate is installed.
At this time, the upper and lower base plates have a plurality of through holes through which bolts can be inserted, respectively, and reinforcing members are installed on both sides of the through holes so as to prevent local buckling by using a steel plate.
Also, a stiffener may be installed between the weld couplers for connecting the longitudinal bars using the steel plate as described above, and the outer tube, the inner tube, and the steel plate may be integrally formed by welding.
Next, the longitudinal reinforcement is fixed to the weld coupler, the transverse reinforcement is placed from the end where the outer tube ends and the concrete is laid. At this time, the outer diameter of the covered concrete is made equal to the outer diameter of the outer tube.
Finally, the tower part of the steel composite hollow RC wind tower constructed through each of the above steps is bonded to the base part through bolting.
Here, when the tower portion of the steel composite hollow RC wind tower is joined to the base portion through the bolt joint using the above-described respective steps, if the base portion is hollow, a base plate for bolt connection is further installed on the inner side portion of the tower portion .
In the case of joining using this method, it is possible to induce breakage at the upper part of the upper base plate without destroying the joint part, thereby facilitating the replacement of the tower in the future.
The joining method according to the present invention is characterized in that instead of providing the upper base plate and the stiffener, as shown in Fig. 5, the joining portion is formed to simultaneously include the through holes and the reinforcing structure in the lower base plate, .
Accordingly, the tower-foundation joint structure of the steel composite hollow reinforced concrete wind tower according to the present invention and the tower-foundation joint method of the steel composite hollow reinforced concrete wind tower using such a joint structure can be implemented as described above.
In addition, by implementing the tower-base joint structure of the steel composite hollow reinforced concrete wind tower according to the present invention and the tower-foundation joint method of the steel composite hollow reinforced concrete wind tower using such a joint structure as described above, According to the invention, there is provided a tower-base joint structure of a steel composite hollow reinforced concrete wind tower which is constructed so that a tower portion and a foundation portion of the wind tower can be easily joined efficiently without the need for site casting, Since the tower-foundation joining method of the concrete wind tower is provided, it is possible to solve the problems of the prior art in which there is a great limitation to apply to the wind tower which is installed mainly on land and in the sea, because the installation is required in the field.
In addition, according to the present invention, there is provided a tower-based joint structure of a steel composite hollow reinforced concrete wind tower configured to be capable of efficiently joining a tower portion and a foundation portion of a wind tower efficiently, It is possible to modularize steel composite hollow RC towers by providing a tower-foundation joining method of steel composite hollow reinforced concrete wind towers using the structure. In addition to this, it is possible to improve the workability and economical efficiency in joining the tower part and the foundation .
Further, according to the present invention, there is provided a tower-foundation joint structure of a steel composite hollow reinforced concrete wind tower, which is constructed so that the tower portion and base portion of the wind tower can be easily joined efficiently, The present invention provides a tower-foundation joining method of a steel composite hollow reinforced concrete wind tower using a steel composite hollow fiber reinforced concrete (RC) Can be solved.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes, modifications, combinations, and alterations may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It is natural that it is possible.
10. Steel composite hollow reinforced
12.
14.
21.
23.
25.
27.
29.
31. Coupling
33. Through
35.
41.
51.
53.
Claims (11)
The tower unit includes:
A lower base plate having a joint surface joined to an upper end surface of the base portion and having a plurality of through holes formed around the joint surface;
An upper base plate having a hollow circular ring shape and disposed at a predetermined interval on the lower base plate and having a plurality of through holes formed at positions corresponding to positions of the through holes of the lower base plate;
An inner steel pipe installed on the lower base plate through welding;
A plurality of weld couplers disposed along an outer circumferential surface of the inner steel pipe;
A longitudinal bar coupled to each of said weld couplers;
A plurality of transverse reinforcing bars disposed laterally on the outer peripheral surface of the longitudinal reinforcing bars;
A cover concrete forming an outer wall surrounding the inner steel pipe, the longitudinal reinforcement and the transverse reinforcement;
An outer steel pipe disposed on an outer circumferential surface of the coated concrete to have a length greater than a height from the lower base plate to at least the upper base plate to join the upper base plate by welding;
A plurality of coupling bolts inserted into the respective through holes of the upper base plate and the lower base plate to join the base and the tower; And
And fixing means for fixing the respective coupling bolts,
And a step of inserting the coupling bolts through a plurality of through holes formed in the lower base plate and the upper base plate respectively, Wherein the base portion and the tower portion are joined to each other only by bolt operation without the need for a site casting operation by fixing the tower portion and the tower portion at the same time.
Wherein the lower base plate comprises:
Wherein the inner steel pipe, the weld coupler, the outer steel pipe, and the through-hole are disposed in order from the center,
Wherein a plurality of the weld couplers and the through holes are arranged at a predetermined interval along the circumferential direction of the lower base plate, and the tower-base joint structure of the steel composite hollow reinforced concrete wind tower.
Further comprising: a plurality of connection plates installed between the respective welded couplers to integrally connect the inner steel pipe and the outer steel pipe using a steel plate, wherein the outer steel pipe, the inner steel pipe, and the connecting plate are integrally formed Wherein the reinforced concrete hollow reinforced concrete wind tower is constructed so as to be able to behave in the same manner as the concrete reinforced concrete structure.
Further comprising: a support plate installed on left and right sides of each of the through holes so as to serve as a reinforcing member for preventing buckling, wherein each of the through holes of each of the lower base plate and the upper base plate has a joint Wherein the buckling structure is configured to prevent local buckling when the bolt is inserted.
And a bolt joint is also applied to the inside of the tower portion and the base portion when the base portion is hollow when joining the tower portion and the base portion. .
The tower unit includes:
A plurality of through holes formed along the peripheries and a rib plate provided on both left and right sides of each of the through holes to serve as a support plate for preventing local buckling so as to form a bonding surface joined to the top surface of the base portion A lower base plate;
An inner steel pipe installed on the lower base plate through welding;
A plurality of weld couplers disposed along an outer circumferential surface of the inner steel pipe;
A longitudinal bar coupled to each of said weld couplers;
A plurality of transverse reinforcing bars disposed laterally on the outer peripheral surface of the longitudinal reinforcing bars;
A cover concrete forming an outer wall surrounding the inner steel pipe, the longitudinal reinforcement and the transverse reinforcement;
An outer steel pipe installed at a predetermined height from the lower base plate on an outer circumferential surface of the coated concrete;
A plurality of coupling bolts inserted into the respective through holes of the lower base plate to join the base portion and the tower portion; And
And fixing means for fixing the respective coupling bolts,
And the fixing bolt is inserted through a plurality of through holes respectively formed in the lower base plate and is fixed by using the fixing means, Wherein the base portion and the tower portion are joined to each other only by a bolt operation without any operation.
The rib plate
And two adjacent sides are welded to the outer steel pipe and the lower base plate, respectively,
Wherein the outer steel pipe is configured to be installed at least above the height of the rib plate, and a tower-based joint structure of the steel composite hollow reinforced concrete wind tower.
Wherein the lower base plate comprises:
Wherein the inner steel pipe, the weld coupler, the outer steel pipe, and the through-hole are disposed in order from the center,
Wherein a plurality of the weld couplers and the through holes are arranged at a predetermined interval along the circumferential direction of the lower base plate, and the tower-base joint structure of the steel composite hollow reinforced concrete wind tower.
Further comprising: a plurality of connection plates installed between the respective welded couplers to integrally connect the inner steel pipe and the outer steel pipe using a steel plate, wherein the outer steel pipe, the inner steel pipe, and the connecting plate are integrally formed Wherein the reinforced concrete hollow reinforced concrete wind tower is constructed so as to be able to behave in the same manner as the concrete reinforced concrete structure.
And a bolt joint is also applied to the inside of the tower portion and the base portion when the base portion is hollow when joining the tower portion and the base portion. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130058752A KR20140137782A (en) | 2013-05-24 | 2013-05-24 | Connection structure for tower-foundation of steel composite hollow reinforced concrete wind tower and connection method using thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130058752A KR20140137782A (en) | 2013-05-24 | 2013-05-24 | Connection structure for tower-foundation of steel composite hollow reinforced concrete wind tower and connection method using thereof |
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| KR20140137782A true KR20140137782A (en) | 2014-12-03 |
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| KR1020130058752A KR20140137782A (en) | 2013-05-24 | 2013-05-24 | Connection structure for tower-foundation of steel composite hollow reinforced concrete wind tower and connection method using thereof |
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