JP5945107B2 - Triangular structure for forming a substantially hemispherical building, regular hexagonal pyramid wall and regular pentagonal pyramid wall using the triangular structure, and substantially hemispherical building - Google Patents

Description

  The present invention relates to a substantially hemispherical building, a so-called dome-shaped building, a building method thereof, and a triangular structure used in the building method.

  As a conventional method of building a dome-shaped building, a triangular panel with a flat plate attached to a triangular frame is combined to form a pentagonal panel or hexagonal panel, and the dome is formed by these pentagonal panel and hexagonal panel. There was one that formed a shape (Patent Document 1).

  In addition, there is a case in which six triangular frames are joined to form a regular hexagonal unit, the unit is lifted and moved by a crane, and the units are joined to form a dome shape (Patent Document 2).

  Buildings with a dome-shaped roof are constructed with pentagonal and hexagonal panels that combine triangles, and are integrally molded with synthetic resin or glass fiber reinforced plastic. (Patent Document 3).

JP-A-7-224464 (page 3, FIG. 9) Japanese Patent Laid-Open No. 7-119208 (page 3, FIG. 5) Japanese Patent Laid-Open No. 7-18744 (page 3, FIG. 5)

  However, in the above invention, since the pentagonal panel and the hexagonal panel are constructed after the triangular frame is first laid, the overall assembly process is reduced, but the area per panel is increased. And the weight of the panel also increased. As a result, many people or heavy machinery such as cranes are required for the assembly work.

  The present invention has been made in view of the above points, and the object of the present invention is a substantially hemispherical building that can be operated by a small number of people without requiring heavy equipment such as a crane for assembly work. It is providing the construction method, the building by the said construction method, and the triangular structure for it.

  Therefore, the present invention according to the construction method of a substantially hemispherical building is a regular hexagonal pyramid formed by assembling a first triangular structure including three members forming each side of the first isosceles triangle. It is configured by assembling a second triangular structure including a wall surface and three members forming each side of a second isosceles triangle having the same length as the bottom of the first isosceles triangle. A substantially hemispherical building constructed by appropriately combining a regular pentagonal pyramidal wall surface, wherein the first triangular structure is arranged in a substantially cylindrical shape while standing and continuing on a horizontal plane. A first layer wall surface constructing step for constructing a first layer wall surface by connecting the triangular structures to each other, and the first or second triangular structure body to form the first triangle constituting the first layer wall surface. Inclined inward from the wall surface of the first layer while continuing above the structure The second layer wall surface construction step for constructing the second layer wall surface by connecting the adjacent triangular structures and the first layer constituting a part of the second layer wall surface The first triangular structure is continued above the triangular structure, and the second triangular structure is continued above the second triangular structure constituting a part of the wall surface of the second layer. , A third layer wall surface construction step for constructing a third layer wall surface by aligning in a substantially cylindrical shape inclined further inwardly than the second layer wall surface and connecting adjacent triangular structures; and The first triangular structure is arranged in a substantially cylindrical shape so as to incline further inward than the third layer wall surface while continuing above the first triangular structure constituting the third layer wall surface. And connecting adjacent triangular structures A fourth layer wall surface construction step for constructing a layer wall surface, and the second triangular structure body are arranged adjacent to each other along an edge of the first triangular structure body constituting the fourth layer wall surface, and adjacent to each other. The gist of the construction method of the substantially hemispherical building includes a fifth layer wall surface construction step of constructing a fifth layer wall surface by connecting triangular structures.

  According to the above configuration, a substantially hemispherical building is constructed by appropriately combining the first triangular structure that can form a regular hexagonal pyramid wall and the second triangular structure that can form a regular pentagonal pyramid wall. can do. At this time, instead of assembling the regular hexagonal pyramidal wall surface and the regular pentagonal pyramidal wall surface as a unit, the first layer wall surface to the fifth layer wall surface can be sequentially assembled from the bottom by the triangular structure.

In the first aspect of the invention, the first layer wall surface building step includes the regular hexagonal pyramid by continuing the 30 first triangular structures and continuing the adjacent three triangular structures as one set. It can also be set as the 1st layer wall surface construction process formed by constructing a half of the shape wall surface.
At this time, when constructing a half of the regular hexagonal pyramidal wall surface by connecting three adjacent first triangular structures as a set, the first located in the middle of the three 1 triangular structure shall construct | assemble alternately the lower half hexagonal pyramidal wall surface structure part which makes a base part lower, and the upper half hexagonal pyramid wall surface structure part which makes a base part upper. Is preferred.

  According to the said structure, the 1st layer wall surface can construct | assemble the half of a regular hexagonal pyramid wall surface with 30 1st triangular structures. Of the half of the regular hexagonal pyramidal wall surfaces, one half (5) of the regular hexagonal pyramidal wall surfaces can be constructed by the first triangular structure constituting the second layer wall surface, and the remaining half. (5 pieces) can form a range in which a regular pentagonal pyramidal wall surface should be constructed in the second layer wall surface.

  Further, in the above invention, the second layer wall surface construction step includes the upper half hexagonal pyramid wall surface configuration by the first triangular structure above the lower half hexagonal pyramid wall surface configuring portion constituting the first layer wall surface. And the triangle located at the center of the upper half hexagonal pyramid wall constituting part constituting the first layer wall surface, and the base part of the triangular structure located on both sides of the upper half hexagonal pyramidal wall constituting part. A second layer wall surface construction step of constructing a part of a regular pentagonal pyramidal wall surface by bringing the bottom part of the second triangular structure into contact with each of the bottom parts of the structure and making them continue can be used. .

  According to the above configuration, a regular hexagonal pyramidal wall surface can be constructed together with a part of the first layer wall surface, and the second triangular structure can be continued on top of the first layer wall surface. And the 1st triangle structure used for the 2nd layer wall surface can determine the installation range of the triangle structure in the 3rd layer wall surface construction process which is the next process.

  In the above invention, in the third layer wall surface construction step, a regular pentagonal pyramid wall surface is constructed by further continuing the second triangle structure on the edge of the second triangle structure constituting the second layer wall surface. And it can also be set as the 3rd layer wall surface construction process which constructs | assembles a lower half hexagonal pyramid-shaped wall surface structure part above the said upper half hexagonal cone-shaped wall surface structure part which comprises the said 2nd layer wall surface.

According to the above configuration, a regular pentagonal pyramidal wall surface can be constructed by a part of the second layer wall surface and a part of the third layer wall surface. Moreover, the part which provided the 1st triangular structure can be made into the state which can construct | assemble a regular hexagonal pyramidal wall surface by the 4th layer wall surface construction process which is a next process.
Furthermore, in the said invention, a 4th layer wall surface construction process WHEREIN: The 4th layer wall surface which constructs | assembles an upper half hexagonal pyramid wall surface structure part above the said lower half hexagonal pyramid wall surface structure part which comprises the said 3rd layer wall surface It can also be a construction process.

  According to the said structure, a regular hexagonal pyramidal wall surface can be constructed | assembled with a part of 3rd layer wall surface by the 4th layer wall surface. Further, the upper edge of the fourth layer wall surface has a pentagon formed by the five base portions of the triangular structure that constitutes the fourth layer wall surface, so that the remaining non-constructed portion becomes a pentagon. A regular pentagonal pyramid wall can be constructed by two triangular structures.

In each of the above inventions, the opening for entrance or the opening for window can be formed by partially omitting the arrangement of the first or second triangular structure. With such a configuration, an opening can be provided with a triangular structure as a unit.
The present invention relating to a substantially hemispherical building is a substantially hemispherical building constructed according to each of the inventions relating to the construction method, characterized in that it is constructed of a regular hexagonal pyramidal wall and a regular pentagonal pyramidal wall. The gist of a semi-spherical building.

  According to the said structure, the building formed by arrange | positioning the regular hexagonal pyramid wall surface and regular pentagonal pyramid wall surface which are constructed | assembled by combining a triangular structure suitably can be provided, and this whole building is made substantially hemispherical. be able to.

  The present invention relating to a triangular structure used in a construction method of a substantially hemispherical building includes a base part constituting member forming a base part of the first or second isosceles triangle and a hypotenuse part of the isosceles triangle. And the base part constituting member is formed in a trapezoidal shape in plan view by a long member having a predetermined width and thickness, and the base of the trapezoid Corresponds to the length dimension of the base part of the isosceles triangle, and the both sides of the trapezoid are base part components formed so as to constitute a part of the hypotenuse part of the isosceles triangle, 1 is formed in a trapezoidal shape in plan view by a long member having predetermined width and thickness dimensions, and the base of the trapezoid is determined from the length of the hypotenuse of the isosceles triangle. Components A first hypotenuse component that has a dimension obtained by subtracting the length of the hypotenuse and is formed such that one of the hypotenuses of the trapezoid forms part of the remaining hypotenuse of the isosceles triangle The second oblique side component member is formed in a trapezoidal shape in a plan view by a long member having predetermined width dimensions and thickness dimensions, and the base of the trapezoid is the length of the oblique side portion of the isosceles triangle. A second hypotenuse component having a dimension obtained by subtracting the length of the hypotenuse of the base component and the length of one hypotenuse of the first oblique component from the dimensions, respectively. The summary is the triangular structure.

  According to the said structure, a triangle can be comprised by the three types of planar view trapezoid member, and the isosceles triangle of a predetermined dimension can be formed with the base of each member (plane view trapezoid member). Thereby, a regular hexagon or a regular pentagon can be formed by combining the isosceles triangles.

  In the above invention, the triangular structure has a triangular plate-like member pasted on at least one side of the triangular frame formed by the bottom side component and the first and second oblique side components. It can also be set as the triangular structure formed.

  According to the said structure, a plate-shaped member can be affixed on a triangular frame, and it can be set as a wall structure. Thereby, even if it does not stick a plate-shaped member after combining a triangular frame, a wall surface will be formed by assembling a triangular structure.

  According to the construction method of the present invention, a unit of a pentagonal panel or a hexagonal panel is not assembled and assembled as a unit, but is assembled with a triangular structure as a unit. It becomes unnecessary. In the hemispherical assembly, two types of triangular structures are used to stack and assemble one step at a time, so that a small number of workers can perform construction work.

  Moreover, the building of this invention becomes a structure where the regular pentagonal pyramid wall surface and the regular hexagonal pyramid wall surface were combined by the said triangular structure, and a substantially hemispherical building can be constructed | assembled. In this substantially hemispherical building, there is no direction difference such as the wives direction and the girder direction, so that vibration due to earthquakes and wind resistance due to strong winds do not concentrate in one place. Moreover, since this building has a structure having a curved surface as a whole of the roof and the wall surface, there is no surface perpendicular to the traveling direction of the wind, and the wind resistance can be reduced.

  Furthermore, according to the triangular structure of the present invention, the regular pentagonal pyramidal wall and regular hexagonal pyramidal wall can be divided into a plurality of members, and the weight of the member can be reduced.

It is explanatory drawing which shows embodiment of this invention. It is member explanatory drawing which shows embodiment of this invention. It is member explanatory drawing which shows embodiment of this invention. It is explanatory drawing which shows other embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with respect to a construction method of a substantially hemispherical building A based on the drawings. The substantially hemispherical building A is constructed by a first layer wall surface construction step or a fifth layer wall surface construction step.

  As shown in FIG. 1 (a), the first layer wall surface construction step uses 30 first triangular structures T1, and sets three adjacent first triangular structures T1 as a set to a horizontal plane. The first layer wall surface 1 is constructed by aligning in a substantially cylindrical shape while being erected and continuous, and connecting adjacent first triangular structures T1. A half of the regular hexagonal pyramid wall surface is constructed by connecting three adjacent first triangular structures T1 as a set. At this time, when the bottom portion of the first triangular structure T1 located in the middle of the three adjacent first triangular structures T1 is lower, a lower half hexagonal pyramidal wall constituting part is constructed, In the case where the base portion is higher, an upper half hexagonal pyramid wall surface construction portion is constructed. And the 1st layer wall surface 1 can be constructed | assembled by connecting alternately a lower half hexagonal pyramidal wall surface structure part and an upper half hexagonal pyramidal wall surface structure part. The triangular structure T1 is provided with through holes 111, 112, 121, 122, 131, 132 for connection, and bolts that simultaneously penetrate the through holes at the contact portions of the adjacent triangular structures. And it connects by fastening with the nut screwed together.

  In addition, as shown in FIG. 1B, the second-layer wall surface construction step uses 15 first triangular structures T1 and 15 second triangular structures T2, and three adjacent While the first triangular structure T1 or three adjacent second triangular structures T2 are taken as a set and continued above the first triangular structure T1 constituting the first layer wall surface 1, The second layer wall surface 2 is formed by aligning the first layer wall surface 1 so as to be inclined inward from the first layer wall surface 1 and connecting the adjacent first triangle structure T1 or second triangle structure T2. To build. More specifically, an upper half hexagonal pyramid-shaped wall constituent part composed of three adjacent first triangular structures T1 is constructed above the lower half hexagonal pyramid-shaped wall constituent part constituting the first layer wall surface 1. The triangular structure T1 located at the bottom of the triangular structure T1 located on both sides of the upper half hexagonal pyramidal wall constituting part and the center of the upper half hexagonal pyramid wall constituting part constituting the first layer wall 1 A part of the regular pentagonal pyramid wall surface is constructed by bringing the bottom edge portion of the second triangular structure T2 into contact with each of the bottom edge portions of the upper half hexagonal pyramid wall structure portion and The second layer wall surface 2 can be formed by alternately constructing a set of three second triangular structures T2 that are part of the pentagonal pyramid wall surface. Similar to the triangular structure T1, the triangular structure T2 is also provided with connecting through holes 211, 212, 221, 222, 231, 232, and at the abutting portions of the adjacent triangular structures, It connects by fastening with the volt | bolt which penetrates the said through-hole simultaneously, and the nut screwed in this.

  In addition, as shown in FIG. 1C, the third layer wall surface construction step uses 15 first triangular structures T1 and 10 second triangular structures T2, and uses three adjacent triangular structures T2. The first triangular structure T1 or two adjacent second triangular structures T2 are taken as a set, and the first triangular structure T1 constituting a part of the second layer wall surface 2 is disposed above the first triangular structure T1. The second layer wall surface 2 is formed by connecting the second triangular structure body T2 above the second triangular structure body T2 constituting a part of the second layer wall surface 2 and the triangular structure body T1. The third layer wall surface 3 is constructed by aligning in a substantially cylindrical shape that is inclined further inward and connecting adjacent triangular structures. Specifically, a regular pentagonal pyramid wall is constructed by continuously connecting the second triangular structure T2 to the edge of the second triangular structure T2 constituting the second layer wall 2 and the second layer wall surface. The lower half hexagonal pyramid wall surface constituting part is constructed above the upper half hexagonal pyramid wall surface constituting part 2, and the lower half hexagonal pyramid wall surface constituting part and a pair of second triangular structures By constructing T2 alternately, the third layer wall surface 3 can be obtained.

  Further, in the fourth layer wall surface construction step, as shown in FIG. 1 (d), 15 first triangular structures T1 are used, and three adjacent first triangular structures T1 are taken as one set. Adjacent triangles are arranged in a substantially cylindrical shape so as to incline further inward than the third layer wall surface while continuing above the first triangular structure T1 constituting the third layer wall surface 3. The fourth layer wall surface is constructed by connecting the structures T1. Specifically, the upper half hexagonal pyramidal wall surface constituting part is formed above the lower half hexagonal pyramidal wall constituting part constituting the third layer wall surface, whereby the fourth layer wall surface 4 can be formed. it can.

  In the fifth layer wall surface construction step, as shown in FIG. 1 (e), five second triangular structures T2 are used, and the first triangular structure T1 constituting the fourth layer wall surface 4 is formed. The fifth triangular wall surface 5 is constructed by arranging the second triangular structures T2 continuously along the edge and connecting the adjacent triangular structures T2. In addition, although FIG.1 (e) is shown as providing the pentagonal-pyramidal wall surface, also here, the 5 2nd triangular structure T2 is installed sequentially.

  As described above, a substantially hemispherical building is constructed as shown in FIG. 1 (e) when the fifth-layer wall surface construction step is completed. Therefore, the building constructed in this way is composed of a regular hexagonal pyramid wall and a regular pentagonal pyramid wall. Since the building constructed in this way has an equal strength in any direction, it is also excellent in earthquake resistance.

  Next, an embodiment of the first triangular structure T1 and the second triangular structure T2 used for the first layer wall surface 1 to the fifth layer wall surface 5 will be described.

  As shown in FIG. 2, the first triangular structure T <b> 1 includes a frame 10 that forms a first isosceles triangle and a plate-like member 14 having the same shape. The frame 10 is made of three rectangular materials, and forms a base part 11 that forms the base part of the first isosceles triangle, and a first hypotenuse part that forms the hypotenuse part of the isosceles triangle. 12 and a second oblique side component member 13.

  The base portion constituting member 11 is formed in a trapezoidal shape in plan view by a long member having predetermined width dimensions and thickness dimensions. At this time, the base of the trapezoid is matched with the length of the base of the isosceles triangle, and both hypotenuses of the trapezoid are formed so as to constitute a part of the hypotenuse of the isosceles triangle. Yes. At this time, the bottom portion constituting member 11 is provided with through holes 111 and 112 at regular intervals. At the abutting portions of adjacent members, bolts that pass through the through holes 111 and 112 at the same time and screws to the bolts are provided. It is connected by tightening with a matching nut.

  Further, the first oblique side component member 12 is formed in a trapezoidal shape in a plan view by a long member having a predetermined width dimension and thickness dimension. At this time, the base of the trapezoid of the first hypotenuse component 12 is a dimension obtained by subtracting the hypotenuse length of the base component 11 from the length of the hypotenuse of the isosceles triangle. One of the oblique sides of the trapezoid is formed to constitute a part of the remaining oblique side of the isosceles triangle. At this time, the first oblique side component member 12 is provided with through-holes 121 and 122 at regular intervals, and a bolt that penetrates the through-holes 121 and 122 at the contact portion of the adjacent member at the same time. It connects by fastening with the nut screwed together.

  Further, the second oblique side component member 13 is formed in a trapezoidal shape in a plan view by a long member having a predetermined width dimension and thickness dimension. At this time, the base of the trapezoid of the second hypotenuse component 13 is the length of the hypotenuse of the hypotenuse component 11 and one of the first hypotenuse component from the length dimension of the hypotenuse of the isosceles triangle. This is the dimension obtained by subtracting the length of the hypotenuse. At this time, the second oblique side component member 13 is provided with through holes 131 and 132 at regular intervals, and at the abutting portion of the adjacent member, a bolt that penetrates the through holes 131 and 132 simultaneously, and It connects by fastening with the nut screwed together.

The lengths of the three constituent members 11, 12, and 13 are as follows. The bottom constituent member 11 is the longest, followed by the first hypotenuse constituent member 12, and finally the second hypotenuse constituent member 13. It has become.
Here, the assembly method of the frame 10 will be described. As shown in FIG. 2, the inclined end surface 12A of the first oblique side component member 12 and the inclined end surface 13B of the second oblique side component member 13 are as follows. While the upper and bottom surfaces of the trapezoid of the bottom side component member 11 are brought into contact with each other, the upper bottom surface of the trapezoid of the first oblique side component member 12 and the inclined end surface 13A of the second oblique side component member 13 are brought into contact with each other. Assemble an equilateral triangular frame. Then, the triangular frame body 10 is completed by fixing each contact portion with a fixing member such as a nail. Here, as described above, the trapezoidal base of the first hypotenuse component 12 has a dimension obtained by subtracting the length of the hypotenuse of the base component 11 and the second hypotenuse component. The base of 13 trapezoids has dimensions obtained by subtracting the length of the hypotenuse of the base part constituting member 11 and the length of one hypotenuse of the trapezoid of the first hypotenuse part constituting member 11. By assembling 11, 12, and 13 as described above, an isosceles triangle having a predetermined size can be formed by the base of the trapezoid of each member. The plate-like member 14 matched with the shape of the frame is attached to one side of the frame 10 assembled in this manner, whereby the first triangular structure T1 can be obtained.

  Further, when the triangular structures T1 are connected to each other, the through holes 111, 112, 121, 122, 131, and 132 provided in the respective members simultaneously penetrate the through holes at the contact portions of the adjacent members. Can be connected by fastening with a bolt to be screwed and a nut screwed into the bolt.

  Further, as shown in FIG. 3, the second triangular structure T <b> 2 includes a frame body 20 that forms a second isosceles triangle and a plate-like member 24 having the same shape. This frame 20 is made of three rectangular materials, and forms a base part 21 forming a base part of a second isosceles triangle, and a first hyposlope part member forming a hypotenuse part of the isosceles triangle. 22 and the second oblique side component member 23.

  In the same manner as in the case of the first triangular structure T1, each of the above-described constituent members has a predetermined width of the base side constituent member 21, the first hypotenuse part constituent member 22, and the second hypotenuse part constituent member 23. It is formed in a trapezoidal shape in plan view by a long member having a size and a thickness. At this time, the base of the trapezoid is matched with the length of the base of the isosceles triangle in the same manner as the first triangular structure T1, and both the hypotenuses of the trapezoid are the hypotenuses of the isosceles triangle. It forms so that it may constitute a part of.

  Further, the base of the trapezoid of the first hypotenuse component 22 is a dimension obtained by subtracting the length of the hypotenuse of the base component 21 from the length of the hypotenuse of the isosceles triangle, One of the hypotenuses of the trapezoid is formed so as to constitute a part of the remaining hypotenuse part of the isosceles triangle.

Further, the base of the trapezoid of the second hypotenuse component 23 is calculated from the length of the hypotenuse of the isosceles triangle and the length of the hypotenuse of the base construct 21 and one of the first hypotenuse components 22. This is the dimension obtained by subtracting the length of the hypotenuse.
When the triangular structures T2 are connected to each other, the through holes 211, 212, 221, 222, 231, and 232 provided in the respective members are simultaneously penetrated through the through holes at the contact portions of the adjacent members. Can be connected by fastening with a bolt to be screwed and a nut screwed into the bolt.

  In addition, since the length of the bottom part of the base part component members 11 and 21 is the same, the first triangular structure can be obtained by fastening the base part component members 11 and 21 with a fastening member such as a bolt or a nut. It is also possible to connect the body T1 and the second triangular structure T2.

  The embodiments of the present invention are as described above, but various modes can be taken without departing from the spirit of the present invention. For example, in the present embodiment, a description is given of a configuration that covers the entire wall surface of the substantially hemispherical building A. However, as shown in FIG. When the window opening is formed, the first or second triangular structures T1 and T2 can be partially omitted.

DESCRIPTION OF SYMBOLS 1 1st layer wall surface 2 2nd layer wall surface 3 3rd layer wall surface 4 4th layer wall surface 5 5th layer wall surface 10 and 20 Frame 11 and 21 Base part component members 12 and 22 1st oblique side component member 13 and 23 Second oblique side component members 14, 24 Plate members 111, 112, 121, 122, 131, 132 Through holes 211, 212, 221, 222, 231, 232 Through hole A substantially hemispherical building T1 first triangle Structure T2 second triangular structure

Claims (5)

A triangular structure for constituting a substantially hemispherical building,
It is composed of a frame body that forms an isosceles triangle, and a plate-like member that is formed in the same shape as the isosceles triangle and pasted in a state where the shape is matched to one side of the frame body,
The frame includes a base part constituting member that forms a base part of the isosceles triangle, and first and second oblique part constituting members that form a hypotenuse part of the isosceles triangle,
The base part component member is formed in a trapezoidal shape in a plan view by a long member having a predetermined width dimension and thickness dimension, and the base of the trapezoid matches the length of the base part of the isosceles triangle. Both hypotenuses of the trapezoid are formed so as to constitute a part of the hypotenuse part of the isosceles triangle,
The first oblique side component member is formed in a trapezoidal shape in a plan view by a long member having predetermined width dimensions and thickness dimensions, and the base of the trapezoid is determined from the length dimension of the oblique side portion of the isosceles triangle. It is a dimension obtained by subtracting the length of the hypotenuse of the base part constituent member, and one of the hypotenuses of the trapezoid is formed so as to constitute a part of the remaining hypotenuse part of the isosceles triangle,
The second oblique side component member is formed in a trapezoidal shape in a plan view by a long member having predetermined width dimensions and thickness dimensions, and the base of the trapezoid is determined from the length dimension of the oblique side portion of the isosceles triangle. It is a dimension obtained by subtracting the length of the hypotenuse of the base side component and the length of one hypotenuse of the first hypotenuse component, respectively.
Each of the two oblique side component members is in contact with an upper bottom surface of a trapezoidal shape in plan view formed by the bottom side component member, and the remaining end surfaces of the second oblique side component members are Each of the abutting portions is fixed in a state of abutting on the upper bottom surface of the trapezoid in a plan view formed by the first oblique side component, and the base of the trapezoid formed by the bottom component The frame body is assembled such that the end surface of the oblique side component member is not exposed to the side, and the end surface of the bottom side component member is necessarily exposed to the bottom side of the trapezoid formed by the oblique side component member. A triangular structure characterized by that.   The bottom side component member and the first and second oblique side component members have a fixed through-hole through which a fastening member for fastening a member that contacts the same type of triangular structure can pass. The triangular structure according to claim 1, which is provided at intervals. A regular hexagonal pyramid wall surface using the triangular structure according to claim 1 or 2, wherein the oblique side component members of the six triangular structures are fastened in contact with each other. A regular hexagonal pyramid wall. A regular pentagonal pyramid wall surface using the triangular structure according to claim 1 or 2, wherein the oblique side component members of the five triangular structures are fastened in contact with each other. Characteristic regular pentagonal pyramid wall. A substantially hemispherical building constructed by the regular hexagonal pyramidal wall according to claim 3 and the regular pentagonal pyramidal wall according to claim 4 ,
In the regular pentagonal pyramid wall, the length of the base of the trapezoid formed by the bottom side component of the triangular structure is the length of the base of the trapezoid formed by the triangular structure constituting the regular hexagonal pyramidal wall. Is formed in the same way as
An abbreviation characterized in that the base side of the trapezoid formed by the bottom side constituent members of each triangular structure constituting any one of the adjacent wall surfaces is fastened in a state of being in contact with each other. Hemispherical building.

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