JP6422515B2 - Wind condition observation apparatus and method of manufacturing wind condition observation apparatus - Google Patents

Description

  The present invention relates to a wind condition observation apparatus and a method for manufacturing a wind condition observation apparatus.

  In recent years, in order to secure energy resources instead of oil, development of renewable energy using, for example, wind, solar, geothermal, bio, etc., is proceeding at a rapid pace.

  Of these, wind power generation requires a few years of pre-observation of wind conditions in order to construct a power generation facility, because fluctuations in weather conditions greatly affect power generation.

  Instruments such as anemometers and anemometers for observing wind conditions are installed at almost the same position as the actual windmills. Therefore, an observation column with a height of 50 meters or more (hereinafter referred to as a “mast”) is used at high heights. Will be built.

  Conventionally, the foundation work for constructing a mast has been excavated about 1.5m and provided with a steel plate base pedestal, and one mast is erected vertically on the base pedestal, and the mast is placed in three or four directions. A branch line such as a stay or a wire is stretched between the mast after the branch anchor is installed and reinforced. In the case of a self-supporting type, it is performed on a concrete basis.

JP 2009-156575 A

  In the conventional case, branch lines are stretched in three or four directions of the mast, so it is necessary to secure an area (partition) as long as the mast as a site for wind condition observation, for example, renting the site In some cases, although the observation will last for several years, the amount of rent will depend on the size of the land, which will be expensive.

  In the case of constructing a self-supporting type, in consideration of construction and removal, a foundation that can be easily removed without using concrete or a structure that stands on it is desirable.

  The present invention has been made to solve such a problem, and can reduce the cost for securing and maintaining the site necessary for installation of the facility, and can easily construct and remove the facility without using concrete. An object of the present invention is to provide a wind condition observation apparatus and a method for manufacturing the wind condition observation apparatus.

The wind condition observing apparatus of the present invention is a wind condition observing apparatus for observing the wind condition by installing a wind condition observing device at a high place, and a rotating pile screwed into the ground from a placement position on the ground, A first center that is concentric with the central axis of the rotating pile, a round hole for bolt fastening is formed at a position equidistant from the first center, and a tower is constructed by connecting a plurality of steel materials at the top. A first plate, and an upper end of the rotary pile, provided to face the first plate, having a second center concentric with the first center, and a distance from the first center to the round hole; A second hole having a long hole wider than the round hole at a distance from the second center which is substantially equal and longer in the rotation direction of the rotary pile, and a gap between the first plate and the second plate. The first reference hole is formed at a position corresponding to the first center of the first plate. In constructing the foundation of this device by arranging a plurality of gauge piles having a second reference hole at a position corresponding to the round hole and the rotary pile, the gauge plate is arranged corresponding to the position of the rotary pile. A template supporting a plurality of the gauge plates.

  The manufacturing method of the wind condition observation apparatus of the present invention is a method of manufacturing a wind condition observation apparatus for observing the wind condition by installing a device for wind condition observation at a high place, and the rotation arranged at the placement position on the ground A pile driving step in which a pile is screwed into the ground so that the height of the second plate provided at the upper end of the rotating pile is a predetermined height, and an upper portion disposed opposite to the second plate of the rotating pile Disposing the first plate on the second plate so that the round hole formed in the first plate and the long hole formed in the second plate overlap, and the round hole and the long hole A step of bolting a portion where the hole overlaps, and a step of assembling a tower by connecting a steel material to an upper portion of the first plate, wherein the pile driving step is formed on the second plate of the rotary pile. The long hole and the round hole of the first plate overlap Rotating the rotating pile in a range comprising the step of fine adjustment of the height.

  According to the present invention, it is possible to reduce the cost for securing and maintaining the site necessary for installation of the facility, and to easily construct and remove the facility without using concrete.

It is a figure which shows schematic structure of the steel tower for wind condition observation of one embodiment. It is a figure which shows the anemometer installed in a steel tower. It is a figure which shows the anemometer installed in a steel tower. It is the elements on larger scale which show the basic | foundation part of a steel tower, and a part (superstructure) of the tower part on it. It is a figure which shows the detailed structure of a base part. It is a top view which shows the plate by the side of an upper structure. It is a top view which shows the pile plate by the side of a foundation part. It is a top view which shows a pile eccentric absorption ring. It is a top view which shows the template of a base part.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing a structure of a wind observation tower in one embodiment as a wind observation apparatus of the present invention.

  As shown in FIG. 1, the tower 1 for wind condition observation of this embodiment is a wind condition observation apparatus for observing the wind condition by installing a wind condition observation device at a high place. It has superstructures such as a structure, a tower section 12 and an instrument installation section 13 and has a height from the ground to the tower tip of about 60 meters.

  In the case of this steel tower 1, for example, a plurality of screw piles 11 (rotary piles) are arranged in an area of 4 meters square (about 16 square meters in area) (in this example, four screw piles 11 are arranged) to constitute the foundation of this apparatus. To do. In other words, it is a structure in which four screw piles 11 are driven into the steel tower installation range, and the tower portion 12 and the instrument installation portion 13 which are upper structures are supported by the four screw piles 11.

  The tower portion 12 is assembled on the screw pile 11 as a foundation and assembled upward, and the end portions are formed by combining grooved steel materials such as L-shaped steel and C-shaped steel, and angle-shaped and steel pipe steel materials. The bolt is fastened and joined.

  As a method of joining the end portions of the steel material, there are a case where the bolt is directly fastened to a hole provided in the steel material and a case where the bolt is fastened via a flange provided at the end portion.

  The instrument installation section 13 stands a vertical support pole 14 on the tower section 12, provides horizontal poles 15 at the height of the measurement object of the support pole 14, and winds at both ends of the pole 15. As an instrument for measuring the situation, for example, an anemometer 16 as shown in FIG. 2 or an anemometer 17 as shown in FIG. 3 is attached.

  That is, this steel tower 1 is for observing the wind condition with an apparatus for wind condition observation (an anemometer 16 and / or anemometer 17) installed at a height of 50 meters or more. Wind conditions refer to wind conditions (wind direction and speed change over time).

  As shown in FIGS. 4 and 5, the screw pile 11 includes a pile body 11 a, a pile plate 11 b as a second plate provided on the upper end (head) of the pile body 11 a, and a lower end of the pile body 11 a. And a provided screw 11c.

  The plurality of screw piles 11 are marked on the ground and then screwed into the ground from the marking points on the ground. The head pile plate 11b is exposed to the ground.

The pile body 11a is a cylindrical steel pipe and has a total length of about 6.5 meters, for example.
The pile plate 11b is, for example, a disc-shaped flat steel plate having a diameter of 580 mm and a thickness of 32 mm so as to face the first plate 21 on the upper structure side (hereinafter referred to as “upper plate 21”) (see FIG. 6). Is provided.

  A pile eccentric absorption ring 50 is loosely fitted in advance to the pile body 11a. The pile eccentric absorbing ring 50 is a donut-shaped flat steel material in which a hole 52 (see FIG. 8) wider than the outer shape of the pile main body 11a is provided at the center. The pile eccentric absorption ring 50 is clamped with the pile plate 11b and the template 30 between the upper plate 21 and bolts. The bolt fastening means that a member sandwiched between the bolt 27 and the nut 28 or the bolt 27 and the washer and the nut 28 is fastened and fixed. The template 30 must be sandwiched between the pile plate 11b and the upper plate 21 for accurate installation and fixing.

  The upper plate 21 is provided with a connecting member 22 having a cross shape when viewed from above.

  A part of the main pillar 23 made of angle iron is overlapped with the connecting member 22 and is arranged at the upper side, and is bolted by a hole 25 provided at a corresponding position. In addition, a diagonal member 24 is disposed on the connecting member 22 in an oblique direction with a part thereof overlapped, and is bolted by a hole 26 provided at a corresponding position.

  Between the upper plate 21 and the pile plate 11b, a part of the template 30 (four corners) (see FIG. 9) is inserted a gauge plate 33. The gauge plate 33 is a rectangular flat steel material having a thickness of 12 mm.

  A first reference hole 34 is formed in the gauge plate 33 at a position corresponding to the first center P1 (see FIG. 6) of the upper plate 21. A second reference hole 35 is formed in the gauge plate 33 at a position corresponding to the round hole 43 of the upper plate 21. Both the first reference hole 34 and the second reference hole 35 are round holes. The second reference hole 35 and the round hole 43 have the same diameter.

  The template 30 has a frame body 31 (see FIG. 9) formed so as to support a plurality of gauge plates 33 arranged corresponding to the positions (squares) of the screw piles 11. There are two roles (functions).

  The first role is a role (function) for accurately marking the center position (position of the first center P1) of the upper plate 21 to be assembled later on the ground. The second role is screw pile within the range in which the long hole 11f of the pile plate 11b is shifted in the rotation direction with respect to the position of the round hole 43 of the upper plate 21 to be assembled later when the pile pile work of the screw pile 11 is performed. 11 is a role (function) for finely adjusting the height of the pile plate 11b at the upper end while changing the position of the screw 11 and adjusting the position.

  As shown in FIG. 6, the upper plate 21 has a first center P1 concentric with the central axis of the screw pile 11, and a plurality of bolt fastening bolts at positions equidistant from the first center P1. Holes 43 are formed at regular intervals. The diameter of the round hole 43 is 26 mm. The upper plate 21 serves as a substrate for assembling a tower (the tower section 12 and the instrument installation section 13 and the like), which is an upper structure, by connecting a plurality of steel materials (main column members 23, diagonal members 24 and the like) to the upper portion. Is.

  As shown in FIG. 7, the foundation-side pile plate 11 b has a second center P <b> 2 concentric with the first center P <b> 1 of the upper plate 21.

  The pile plate 11b has a long hole 11f wider than the round hole 43 at a distance S2 from the second center P2 that is substantially equal to the distance S1 from the first center P1 of the upper plate 21 to the round hole 43, and the pile body 11a. It is formed long in the rotation direction. The distance S1 is a distance from the first center P1 to the center of the round hole 43.

  The long hole 11f has a length T1 (distance) in the rotational direction and a width T2 in the short direction based on the diameter of the round hole 43 so as to correspond to an eccentricity of ± 15 mm (range of 30 mm) from the center of the screw pile 11. Is also widely formed.

  In this example, while the diameter of the round hole 43 is 26 mm, the length T1 in the rotation direction of the long hole 11f is a width T1 at a distance S2 from the center P2 in the range of 20 ° from the center P2, and the width in the short direction. T2 is 56 mm (a width exceeding twice the diameter of the round hole 43). The length T1 in the rotation direction is a distance that a circle having the same diameter as the width T2 moves within a range of 20 °.

  As shown in FIG. 8, the pile eccentric absorption ring 50 is provided with a round hole 52 at a position corresponding to the round hole 43 (see FIG. 6) of the upper plate 21. The pile eccentric absorption ring 50 has a hole 51 (first hole) that is loosely fitted to the screw pile 11 and a round hole 52 (second hole) corresponding to the round hole 43 of the upper plate 21. This pile eccentric absorption ring 50 is disposed opposite to the upper plate 21 with at least the pile plate 11b interposed therebetween, and is a ring-shaped pile that is bolted to the upper plate 21 through the holes (round holes 43 and 52). It is an eccentric absorption member.

  As shown in FIG. 9, the template 30 is a range in which a plurality of screw piles 11 are arranged in the installation place (in this example, a space of about 5 meters square) to constitute the foundation of this device. A rectangular shape (in this example, a square) that supports the gauge plate 33 with a square so that the distance between the centers of the gauge plates 33 having a width including the same (the same applies to both the left and right ends and the upper and lower ends in the figure) is 4166 mm. This is a frame 31. The frame 31 is supported by a diagonal member 32. The outer shape (shape) of the frame 31 is not limited to a square as in this example, and may be, for example, a rectangle or a triangle.

  In the template 30, the first reference hole 34 of the gauge plate 33 is formed at a position corresponding to the first center P <b> 1 of the upper plate 21 to be assembled later, and the gauge plate 33 is positioned at a position corresponding to each round hole 43. A second reference hole 35 is formed.

Hereinafter, the manufacturing method of the steel tower for wind condition observation of this embodiment is demonstrated.
In the case of the steel tower of this embodiment, when a plurality of screw piles 11 are arranged to configure the foundation (foundation) of this apparatus, first, the template 30 is arranged on the ground of the installation place. The template 30 is set at the screwing position of the four screw piles 11 while adjusting the position with a heavy machine such as a crane truck.

  Subsequently, the screwing position of the screw pile 11 is marked on the ground using the first reference hole 34 of the template 30 arranged on the ground. The marking is performed by inserting a bar-shaped steel material, for example, a reinforcing bar, thinner than the first reference hole 34 through the first reference hole 34 and piercing the ground directly below.

  After marking, the template 30 is once removed from the installation location, and a small pile driving machine is moved to the installation location to replace it with the pile body 11a at the factory at the screwed position (placement position on the ground) marked with a reinforcing bar. The screw pile 11 in which the pile eccentric absorption ring 50 is already inserted is disposed. A small pile driver is a caterpillar type self-propelled vehicle that can enter a hilly area where there is no road.

  By operating the pile driver, the height of the pile plate 11b provided at the upper end of the screw pile 11 is set to a predetermined height in terms of construction (one of the other screw piles 11). The pile plate 11b is screwed into the ground so as to have the same height. This process is called a pile driving step.

  In addition, the screw pile 11 does not bury all the pile main bodies 11a in the ground, but makes it the state exposed about several dozen centimeters to several meters on the ground.

  In this pile driving step, the screw pile 11 is slowly rotated as long as the long hole 11f formed in the pile plate 11b of the screw pile 11 overlaps the round hole 43 of the upper plate 21 and the second reference hole 35 of the template 30. Then, the height of the pile plate 11b of the screw pile 11 is finely adjusted.

  After finishing the driving of the four screw piles 11 adjusted in height in this way, the removed template 30 is moved again to the installation position and placed on the pile plate 11b of the four screw piles 11. To do.

  Here, the positional relationship (overlapping condition) between the positions of the plurality of second reference holes 35 of the template 30 and the plurality of long holes 11f of the pile plate 11b is confirmed. The confirmation here is confirmation of whether or not all the second reference holes 35 are inside the long holes 11f and the height. In addition, when the 2nd reference hole 35 is not in the inner side of the long hole 11f, it returns to said pile driving process and performs height adjustment with a pile driving machine.

  After confirming the positional relationship between the second reference hole 35 and the long hole 11f, the upper plate 21 is placed on the gauge plate 33 of a part (square) of the template 30, and the round hole 43 of the upper plate 21 and the gauge plate are arranged. The portion where the second reference hole 35 of 33, the long hole 11f formed in the pile plate 11b and the round hole 52 of the pile eccentric absorption ring 50 overlap is bolted.

  After the bolts are tightened, a steel member (main column member 23, diagonal member 24, etc.) is connected to the upper part of the upper plate 21 to assemble a tower (a tower part 12, an instrument installation part 13, etc.) as an upper structure.

(effect)
Thus, according to the tower 1 for wind condition observation of this embodiment, it has the 1st center P1 concentric with the center axis | shaft of the screw pile 11, and several circles in the position of equidistant S1 from this 1st center P1. The upper plate 21 formed with the hole 43 and the upper end of the screw pile 11 have a second center P2 concentric with the first center P1 of the upper plate 21, and the distance S1 and the same distance S2 from the second center P2. The long hole 11f is provided with the pile plate 11b formed longer in the rotation direction of the screw pile 11 than the round hole 43, and the following effects are obtained.

  While the screw pile 11 is being screwed in, when the height of the pile plate 11b is set to a certain level, there may be a slight deviation from the position of the round hole 43 of the upper plate 21, but the pile plate 11b side By making the hole of the long hole 11f, fine adjustment is effective in the rotation direction, and the upper plate 21 having a fixed orientation can be fixed to the screw pile 11.

  Further, the width T2 in the short direction of the long hole 11f is also set to a width (56 mm) that is at least twice the diameter (26 mm) of the round hole 43, thereby ± 15 mm (range of 30 mm) from the center of the screw pile 11. A degree of eccentricity can also be tolerated.

  Furthermore, by using the mast system supported by the branch line as a self-supporting steel tower 1, the installation space can be greatly reduced as compared with the conventional mast system. In the example of this embodiment, it is sufficient to secure a site of about 25 square meters (5 meters × 5 meters) for the steel tower 1 of 60 meters, so that the site necessary for installing the wind observation facility is narrow. it can. For example, when renting a land, expenses such as rent can be significantly reduced. Also, operations such as installation of branch line anchors and attachment of branch lines are not required.

  By using the screw piles 11 for the foundation, it is possible to install the self-supporting tower 1 in a terrain where no concrete placement work is required and vehicles such as a mixer truck cannot enter.

  Moreover, the screw pile 11 can be easily removed by a reverse rotation operation with a pile driving machine after the wind condition observation is completed, and can be reused thereafter, which is also effective in terms of recycling of members.

  Furthermore, the accuracy of the driving position of the screw pile 11 can be improved by using the template 30 for marking the screwing position of the screw pile 11.

  In addition, by placing the template 30 and placing the upper plate 21 after the screw pile 11 is driven in, the position can be confirmed before the tower section 12 is assembled, and the template 30 is used as a part of the steel tower structure. By using it, the reinforcing effect is increased and it can be used effectively. Furthermore, by placing a level on the frame body 31 of the template 30, the displacement of the screw pile 11 can be easily confirmed, thereby saving labor during maintenance.

  That is, according to the present invention, by reducing the site necessary for installation of the facility, the cost for securing and maintaining the site (running cost in the case of rental, etc.) is reduced, and the installation strength is obtained without using concrete for the foundation. And installation and removal of facilities can be facilitated while maintaining high installation accuracy.

  Although the embodiment of the present invention has been described, this embodiment is shown as an example, and can be implemented in various other forms. Can be omitted, replaced, or changed.

  In the said embodiment, although the screw pile 11 was used for the foundation part, when there is an installation plan of the wind power generation equipment in a port, the wind condition observation apparatus (wind wind) to a breakwater is replaced by replacing the screw pile 11 with an anchor bolt. It can be used for the installation of status pillars.

  In the said embodiment, although the template 30 was utilized as a part of steel tower structure, the case where the template 30 is only utilized as a jig | tool for screwing position marking and is not utilized as a part of steel tower structure is also considered. In this case, the manufacturing method of the steel tower 1 is the pile plate 11b of the screw pile 11 so that the round hole 43 of the upper plate 21 and the long hole 11f of the pile plate 11b overlap after the screwing position marking and the template 30 is removed. The upper plate 21 is disposed so as to be opposed to each other, and a portion where the round hole 43 of the upper plate 21, the long hole 11 f of the pile plate 11 b overlaps with the round hole 52 of the pile eccentric absorption ring 50 is bolted. The procedure after the bolt fastening is the same as that described in the above embodiment.

  Moreover, in the said embodiment, although the template 30 was utilized as a part of steel tower structure, you may utilize the template 30 as a placement position confirmation jig | tool of an anchor bolt.

  In this case, in the method for manufacturing the steel tower 1, the template 30 is set at a steel tower construction planned position, and paint marking is performed at the placement position on the ground directly below the round hole 35. Thereafter, the template 30 is removed from the position, and an anchor bolt is driven at the marking position on the marked ground. The round hole 43 formed in the upper plate 21 is inserted into the anchor bolt that has been placed, and the upper plate 21 is fixed to the anchor bolt by tightening a nut or the like from above the upper plate 21.

DESCRIPTION OF SYMBOLS 1 ... Steel tower 11 ... Screw pile 11a ... Pile main body 11b ... Pile plate 11c ... Screw 11f ... Long hole 12 ... Tower part 13 ... Instrument installation part 14 ... Support pole 15 ... Horizontal pole 16 ... Anemometer 17 ... Anemometer 21 ... Upper part Plate 22 ... Connecting material 23 ... Main pillar material 24 ... Diagonal material 25, 26, 51 ... Hole 27 ... Bolt 30 for connecting pile plate 11b and upper plate 21 ... Template 31 ... Frame body 32 ... Diagonal material 33 ... Gauge plate 34 ... First reference hole 35 ... Second reference hole 43, 52 ... Round hole 50 ... Pile eccentric absorption ring

Claims (6)

A wind observation device that installs wind observation equipment at a high place and observes the wind condition,
A rotating pile screwed into the ground from the ground placement position;
A first center that is concentric with the central axis of the rotating pile, a round hole for bolt fastening is formed at a position equidistant from the first center, and a tower is constructed by connecting a plurality of steel materials at the top. A first plate;
The second pile is provided at the upper end of the rotary pile so as to face the first plate, has a second center concentric with the first center, and is substantially equal to the distance from the first center to the round hole. A second plate in which a long hole is wider than the round hole at a distance from the center and long in the rotation direction of the rotary pile ;
A first reference hole is formed between the first plate and the second plate, and a first reference hole is formed at a position corresponding to the first center of the first plate, and a second reference is formed at a position corresponding to the round hole. A gauge plate with holes,
A template for supporting a plurality of the gauge plates arranged corresponding to the positions of the rotary piles when a plurality of the rotary piles are arranged to form the foundation of the apparatus ; Wind condition observation device.   The wind condition observation apparatus according to claim 1, wherein a width of the long hole in a short direction is formed wider than a diameter of the round hole. The wind condition observation apparatus according to claim 1 , wherein the template has a square or triangular frame. A wind observation device that installs wind observation equipment at a high place and observes the wind condition,
A rotating pile screwed into the ground from the ground placement position;
A first center that is concentric with the central axis of the rotating pile, a round hole for bolt fastening is formed at a position equidistant from the first center, and a tower is constructed by connecting a plurality of steel materials at the top. A first plate;
The second pile is provided at the upper end of the rotary pile so as to face the first plate, has a second center concentric with the first center, and is substantially equal to the distance from the first center to the round hole. A second plate in which a long hole is wider than the round hole at a distance from the center and long in the rotation direction of the rotary pile;
A first hole that is loosely fitted to the rotary pile and a second hole corresponding to the round hole of the first plate, and is disposed to face the first plate via the second plate; 1 plate and another wind situation observation device you characterized by comprising the <br/> a ring-shaped piles eccentric absorbing member which is bolted through holes. A method of manufacturing a wind condition observation device for observing a wind condition by installing a device for wind condition observation at a high place,
A pile driving step of screwing the rotary pile arranged at the placement position of the ground into the ground so that the height of the second plate provided at the upper end of the rotary pile is a predetermined height;
Arranging a part of the template provided with a reference hole corresponding to the round hole of the upper first plate on the second plate of the rotating pile;
Disposing the first plate on a part of the template, and bolting a portion where the round hole, the reference hole and the long hole formed in the second plate overlap;
Connecting a steel material to the top of the first plate and assembling a tower,
The pile driving step comprises:
The step of finely adjusting the height by rotating the rotary pile in a range where the long hole formed in the second plate of the rotary pile, the round hole of the first plate, and the reference hole of the template overlap. A method of manufacturing a wind condition observation apparatus. In arranging a plurality of the rotating piles to constitute the basis of this device, arranging the template on the ground;
Marking the screwing position of the rotary pile on the ground using a reference hole of the template arranged on the ground; and removing the template and arranging the rotary pile at the marked screwing position. The manufacturing method of the wind condition observation apparatus of Claim 5 characterized by the above-mentioned.

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