JP3069033B2 - Space truss structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional truss structure constituting a building body of a building, and more particularly to a three-dimensional truss structure suspended on a ground by a wire.

[0002]

2. Description of the Related Art As is well known, a space truss structure is advantageous for buckling, and is often used as a space frame structure for a large span structure. The space frame structure is a three-dimensional space truss composed of members as uniform as possible for the entire structural frame, is formed mainly of steel, is lightweight, and has the advantage of being suitable for factory production.

[0003]

The space frame structure using the three-dimensional truss includes a plane type, a dome type, a one-lobe hyperboloid type, and the like. All of them are structures installed on the ground. Therefore, it was easy to receive seismic force directly. On the other hand, the space truss structure is lighter than the normal frame structure with columns and beams, and by taking advantage of this light weight, if the space truss structure is suspended above the ground, seismic force can be reduced. Since the present invention can provide a structure that is not directly received, the present applicant focused on this point and conducted intensive research, and as a result, came to invent the space truss structure of the present application.

[0004]

Therefore, a space truss structure according to a first aspect of the present invention comprises a pair of space truss having a triangular pyramid shape, which are spaced apart from each other in the left and right directions and their bottom surfaces are grounded. Along with being disposed horizontally at a higher position, the pair of space trusses are connected to each other by a connection tension wire, and further, each of the space trusses is
It is suspended from a support fixed to the ground by a tension wire for suspension, and is supported from the ground or the support by a tension wire for preventing rocking.

The triangular pyramid-shaped three-dimensional truss is formed by assembling a plurality of rod-shaped steel materials into a triangular pyramid by pin connection with each other.
And a bottom portion provided horizontally, a first side portion forming an equilateral triangle perpendicular to the bottom portion with the oblique side of the bottom portion as one side, and the other two sides of the bottom portion respectively. It is configured to have one side and two second side surfaces adjacent to the first side surface.

When the pair of three-dimensional trusses having a triangular pyramid shape are arranged to be opposed to each other on the left and right, the first side portions are arranged in parallel and opposed to each other.
The vertices of the side portions facing each other are connected by a connecting tension wire. When the space truss is suspended from a support fixed to the ground by a tension wire for suspension, the support is formed to be higher than a bottom portion of the space truss, and is suspended from an upper end of the support. The bottom of the space truss is hung by the tension wire.

Further, when the space truss is supported from the ground or the support by a tension wire for preventing rocking, three vertices of a bottom portion of the space truss are provided;
Three tension wires for preventing rocking are stretched between one point on the ground, or between a vertex opposed to the hypotenuse of the bottom part and two points on the ground. A tension wire for preventing rocking is stretched, and a tension wire for preventing rocking is stretched between the other two vertexes of the bottom portion and the two points on the ground.

[0008] In the space truss structure of the first aspect,
The pair of three-dimensional trusses are connected by a tension wire for connection, and the pair of three-dimensional trusses are respectively suspended from a support by a tension wire for suspension. Further, the pair of three-dimensional trusses is ground or the support. Since it is supported by a tension wire for preventing swing from the above, by appropriately introducing tension to the respective wires, a structure that is structurally stable and does not swing while floating from the ground and Become.

[0009] The space truss structure according to the second aspect is the first aspect.
In the above, the suspension tension wire is stretched between three vertexes of a bottom portion of the space truss and the support. This support is formed higher than the bottom of the space truss, and tension wires for suspension are respectively stretched between one point on the upper end of the support and three vertices on the bottom of the space truss. I do. One point of the upper end of the support to which one end of each of the tension wires for suspension is connected is provided on the bottom of the space truss immediately above the vertex facing the oblique side.

[0010] In the space truss structure of claim 2,
Since the suspension tension wires are stretched between the three vertices of the bottom portion of the space truss and the support, the space truss can be hung more stably.

According to a third aspect of the present invention, there is provided a three-dimensional truss structure including a pair of triangular pyramid-shaped three-dimensional trusses which are opposed to and separated from each other on the right and left, and their bottom portions are horizontally positioned above the ground. A basic space truss is formed by connecting the pair of space trusses with a tension wire for connection, and a plurality of the basic space trusses are formed by connecting a plurality of the basic space trusses to a top space of the basic space truss located below. The upper three-dimensional truss is placed above and below the bottom part, and the horizontal direction of the upper and lower adjacent basic three-dimensional trusses is changed by 90 °, and the lowermost basic three-dimensional truss is placed on the ground. It is suspended from a fixed support by a tension wire for suspension, and is supported from the ground or the support by a tension wire for preventing rocking. In the basic space truss adjacent to, the upper space truss is suspended from the top of the lower space truss by the tension wire for suspension, and the basic space truss located below is prevented from swinging. Supported by a tension wire.

The triangular pyramid-shaped three-dimensional truss is formed by assembling a plurality of rod-shaped steel materials into a triangular pyramid by pin connection with each other.
And a bottom portion provided horizontally, a first side portion forming an equilateral triangle perpendicular to the bottom portion with the oblique side of the bottom portion as one side, and the other two sides of the bottom portion respectively. It is configured to have one side and two second side surfaces adjacent to the first side surface. Further, the basic space truss is configured such that the pair of space trusses having the shape of the triangular pyramid are spaced apart from each other in the left-right direction, and the first side portions are arranged in parallel and opposed to each other. It is configured by connecting mutually opposite vertices with a connecting tension wire.

Further, when the lowermost basic space truss is suspended from a support fixed to the ground by a tension wire for suspension, the lower surface of the lowermost basic space truss is supported. The lower portion of the basic space truss located at the lowermost position is suspended from the upper end of the support by a tension wire for suspension. Furthermore, the basic space truss located at the bottom is
When supported by the ground or the support with a tension wire for preventing rocking, three apexes on the bottom surface of each triangular pyramid-shaped space truss constituting the basic space truss located at the lowermost position, and on the ground Between one point and 3
A tension wire for preventing rocking of the book is stretched, or a tension wire for preventing rocking is provided between a vertex opposed to a hypotenuse of a bottom portion of the space truss and two points on the ground. And tension wires for preventing rocking are respectively stretched between the other two vertices of the bottom surface portion and the two points on the ground.

Further, in the basic space truss vertically adjacent to each other, when the basic space truss located above is supported by the tension wire for preventing swinging from the space truss located below, the space truss located above is provided. Between the apex facing the hypotenuse of the bottom part of each space truss constituting the bottom and the other apex other than the apex facing the hypotenuse of the bottom part of the space truss constituting the basic space truss located below A tension wire for preventing rocking is stretched to each other, and the other two vertices of the bottom part of each space truss constituting the basic space truss located above and the basic space truss located below the space truss. Two swing-prevention tension wires are stretched between the bottom of each of the space trusses and other vertices other than the vertices facing the hypotenuse. Or the other vertices other than the vertices facing the hypotenuse of the bottom part of each space truss constituting the upper space truss and the upper space truss constituting the lower space truss. A tension wire for preventing rocking is stretched between the vertex facing the hypotenuse of the bottom surface and another vertex.

In the three-dimensional truss structure according to claim 3,
A plurality of basic space trusses are stacked one on top of the other, with the top of the basic space truss located below located above the bottom of the space truss located above, and the horizontal direction of the space truss adjacent vertically Of the basic space truss located at the lowest position,
Suspended by a tension wire for suspension from a support fixed on the ground, and supported by a tension wire for rocking prevention from the ground or the support, furthermore, in a basic space truss vertically adjacent to each other, Since the basic space truss located at was suspended from the top of the underlying space truss by a tension wire for suspension, and supported from the underlying space truss by a tension wire for preventing rocking, By appropriately applying tension to each of the wires, the basic space truss is stably stacked up and down, resulting in a structure that is structurally stable and does not swing while floating above the ground.

According to a fourth aspect of the present invention, there is provided a three-dimensional truss structure.
In the above, the suspension tension wire is stretched between the apexes of the bottom portions of a pair of space trusses constituting the lowermost basic space truss and the support, and vertically adjacent to each other. In the basic space truss, it is stretched between the apex of the bottom of a pair of space truss constituting the basic space truss located above and the top apex of the space truss constituting the space truss located below. Things.

The support is formed to be higher than the bottom of the basic space truss, and one point of the upper end of the support and the bottom of a pair of space truss constituting the lowermost space truss are formed. A tension wire for suspension is stretched between each vertex other than the vertex facing the hypotenuse.

In the space truss structure of the fourth aspect,
Multiple basic space trusses up and down at 90 °
The tension wire for suspension is changed to a pair of three-dimensional truss that constitutes the basic space truss that constitutes the basic space truss that is located below and a pair of space truss that constitutes the basic space truss that is located below. Since it was stretched between the top apex,
The basic space truss located above is hung on the basic space truss located below, while a pair of space truss constituting the truss is connected by tension wires for suspension. The truss can be hung more stably.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a space truss structure of the present invention will be described with reference to the drawings. FIGS. 1 to 4 show a first embodiment of a space truss structure according to the present invention. The space truss structure 1 shown in these figures has a structure including a pair of space truss 2. I have. The three-dimensional truss 2 has a triangular pyramid shape, and is formed by assembling six rod-shaped steel materials 3 into a triangular pyramid by pin connection with each other. The space truss 2 has a bottom surface portion 2a in the form of a right-angled isosceles triangle, and a first side surface portion 2b having an oblique side of the bottom surface portion 2a as one side and forming an equilateral triangle perpendicular to the bottom surface portion 2a. And two other second sides 2c, 2c adjacent to the first side 2b, with the other two sides of the bottom 2a as one side. The bottom portion 2a, the first side portion 2b, and the second side portion 2c are imaginary planes surrounded by the steel members 3, respectively, and are actually spaces.

The pair of space trusses 2, 2 are
The bottom surfaces 2a, 2a are horizontal at a position above the ground G, and the first side surfaces 2b, 2b are opposed to each other in parallel and are spaced apart from each other. In addition, the first side portions 2b, 2b of the pair of space truss 2, 2
The vertices facing each other are connected by connecting tension wires 4..., Thereby connecting the pair of space truss 2 and 2 to the space truss structure 1.
Is composed.

On the left and right sides of the space truss structure 1, supports 5 are fixed to the ground G, respectively. The support 5 has a substantially triangular pyramid shape, and two outwardly facing side surfaces are each formed of a triangular plate, and the inwardly facing side surface is a space. Also, the height of the support 5 is formed higher than the bottom surface 2a of the space truss 2,
The vertex 5a of the support 5 is located at the bottom 2a of the space truss 2.
Is provided immediately above the vertex 2d facing the hypotenuse.

The space truss 2 is suspended from the support 5 by three suspension tension wires 6. That is, between the three vertices 2d, 2e, 2e of the bottom surface 2a of the space truss 2 and the vertex 5a of the support body 5, the tension wires 6 for suspension are respectively stretched. Further, the space truss 2 is supported from the ground G by three tension wires 7 for preventing rocking. That is, between the three vertices 2d, 2e, 2e of the bottom surface portion 2a of the space truss 2 and the one point G1 on the ground G, the tension wires 7 for rocking prevention are respectively stretched. In addition, one point G1 on the ground G is an intersection of a vertical line lowered from the center of gravity of the bottom surface 2a of the space truss 2 and the ground surface.

As described above, the three-dimensional truss structure 1 is
A pair of three-dimensional trusses 2 constituting the truss 2 are connected by connecting tension wires 4.
From the suspension tension wire 6 ...
Further, since it is supported from one point G1 on the ground G by the tension wires 7 for preventing rocking, the tension is appropriately applied to each of the wires, so that it is structurally stable and floats from the ground. In addition, the structure does not swing. Moreover, since the tension wires 6 for suspension are stretched between the three vertices 2d, 2e, 2e of the bottom surface 2a of the space truss 2 and the support body 5, the space truss 5 can be made more stable. Can be hung.

Then, the space truss structure 1 having the above structure
Is used, for example, as a frame when constructing the main hall of a temple or shrine, and a roof is roofed on the third side portion 2c of the three-dimensional truss 2, 2 and on the upper surface between the three-dimensional trusses 2, 2. A floor is formed on the bottom portion 2a of the second and the bottom portion between the space truss 2 and 2. Since the three-dimensional truss structure 1 is suspended in a state of being suspended from the ground, a height of, for example, about 3 m is provided below the main hall having the three-dimensional truss structure 1 as a framework. The space can be easily formed, and it can be used as a passage when visiting a temple or shrine.
By forming a recess of about 5 cm and filling the recess with water, it is possible to create a state in which the main hall is floating on the water surface where light is reflected.

FIGS. 5 to 8 show a second embodiment of the space truss structure of the present invention. The three-dimensional truss structure 11 shown in these figures is different from the three-dimensional truss structure 1 shown in FIGS. 1 to 4 in that the arrangement relationship of the swing-prevention tension wires 7 that support the three-dimensional truss 2 from the ground G is provided. Therefore, only this point will be described, and other common portions will be denoted by the same reference numerals and description thereof will be omitted.

That is, in the three-dimensional truss structure 11 of the present embodiment, the swinging motion is caused between the vertex 2d facing the hypotenuse of the bottom portion 2a of the space truss 2 and the vertices 5b, 5b of the bottom portion of the support 5 respectively. Tension wires 7, 7 for preventing movement are stretched. Further, the bottom portion 2 of the space truss 2
Tension wires 7, 7 for swing prevention are respectively stretched between the other two vertexes 2e, 2e and the vertices 5b, 5b on the bottom surface of the support 5.

In the three-dimensional truss structure 11 having the above-described structure, the same effect as the three-dimensional truss structure 1 can be obtained, and the three-dimensional truss 2 can be connected to the two apexes 5b, 5b on the bottom surface of the support 5. Since it is supported by the tension wires 7 for preventing rocking, the stress concentration can be reduced and the support can be performed more stably as compared with the case where the support is made from one point on the ground G. In the three-dimensional truss structure 11, the end of the tension wire 7 for preventing rocking is fixed to the vertices 5b, 5b of the bottom surface of the support 5; however, the present invention is not limited to this. You may stop at the point.

FIGS. 9 to 11 show a third embodiment of the space truss structure of the present invention. The space truss structure 21 shown in these figures has five basic space trusses 22. It is configured to be installed. The basic space truss 22 includes a pair of space truss 2 having a triangular pyramid shape.
2 are disposed so as to be opposed to each other left and right, and their bottom portions 2a are arranged horizontally, and the upper apexes of the pair of space truss 2 are connected by connecting tension wires 4. It is configured.

Then, the five basic space trusses 22 ...
Are vertically stacked so that the top of the basic space truss 22 located below is located above the bottom surface of the space truss located above, and the horizontal direction of the space truss 22, 22 vertically adjacent to each other. Are turned 90 degrees. That is, between the pair of space trusses 2 and 2 constituting the upper space truss 22 located above, the lower space truss 22 whose direction is changed by 90 ° is located below.
, Five basic space trusses 22 are arranged one above the other.

The basic space truss 22 located at the lowermost position
Are suspended from the pair of supports 5, 5 fixed on the ground G by tension wires 6 for suspension, and are supported from the ground side by tension wires 7 for swing prevention. . That is, between the apex 5a of the support 5 and the apex 2e of the bottom portion 2a of the space truss 2 constituting the basic space truss 22 located at the lowermost position, the tension wires 6 for suspension are provided, respectively. 6 is stretched. Each vertex 5b on the bottom surface of the support 5
And each vertex 2d, 2e of the bottom surface 2a of the space truss 2
Between the tension wires 7,
7 is installed.

Furthermore, the basic space truss 2 vertically adjacent to each other
2 and 22, the basic space truss 22 located above
Are suspended from the top of the basic space truss 22 located below by the tension wires 6 for suspension and supported by the tension wires 7 for swing prevention from the space truss 22 located below. I have. That is, the apex 2 of the bottom surface 2a of each of the pair of space trusses 2 forming the basic space truss 22 located above.
e, 2e and respective vertices 2f, 2 of a pair of space trusses 2, 2 constituting the basic space truss 22 located below.
A tension wire 6 for suspension is stretched between the first and second f.

The basic space truss 22 located above
2d and the vertex 2d of the bottom surface 2a of each of the space trusses 2 and 2 constituting the basic space truss 22 located below.
e, 2e, tension wires 7, 7 for preventing rocking are respectively stretched, and further, the bottom portions 2a of the space trusses 2, 2 constituting the basic space truss 22, which are located above, are provided. Between the two vertices 2e and 2e and the vertices 2e and 2e of the bottom surface 2a of each of the space trusses 2 and 2 constituting the basic space truss 22 located below. , 7 are stretched.

In the space truss structure 21, the five basic space trusses 22 are connected to the basic space truss 22 in which the top of the lower space truss 22 is located above.
The upper three-dimensional truss 22 is vertically arranged so as to be located above the bottom of the base truss, and the horizontal direction of the upper and lower adjacent basic three-dimensional truss 22, 22 is changed by 90 °. , A support fixed on the ground 5,
5 is supported by tension wires 6 for suspension, and supported by vertexes 5b, 5b on the bottom surface of the support 5 by tension wires 7 for preventing rocking. 22 is suspended from the top of the basic space truss 22 located below by the tension wires 6 for suspension, and supported by the tension wires 7 for swing prevention from the space truss 22 located below. So each wire 6,7
The basic space truss 2
2 can be stably stacked up and down to provide a structure that is structurally stable and does not swing while floating above the ground.

Then, the space truss structure 21 having the above structure
Is used, for example, as a frame when constructing a five-storied pagoda of a temple or shrine, and a roof is laid on the upper surface of each basic space truss 22 and a floor is formed on the bottom surface. Since the space truss structure 21 is suspended in a state of being suspended from the ground, a height of, for example, about 3 m below the five-story tower having the space truss structure 21 as a frame, between the space and the ground. The space can be easily formed, and it can be used as a traffic path when visiting the temples and shrines. In addition, a recess with a depth of about 3 to 5 cm is formed in the ground below the five-storied pagoda, and this recess has water. By stretching, it is possible to create a state in which a five-tiered tower is floating on the water surface where light reflects.

FIG. 12 and FIG. 13 show a fourth embodiment of the space truss structure of the present invention. The three-dimensional truss structure 31 shown in these figures differs from the three-dimensional truss structure 21 shown in FIGS. 9 to 11 in the arrangement of the swing-prevention tension wires 7 that support the basic three-dimensional truss 22. Therefore, only this point will be described, and other common portions will be denoted by the same reference numerals and description thereof will be omitted.

That is, in the three-dimensional truss structure 31 of the present embodiment, the three vertices 2d, 2e, 2e of the bottom surface 2a of each of the three-dimensional trusses 2 constituting the lowermost three-dimensional truss 22, and the ground Three swing-preventing tension wires 7 are stretched between one point G2 on G. In addition, one point G2 on the ground G is an intersection of a vertical line lowered from the center of gravity of the bottom surface portion 2a and the ground surface.

Further, the basic space truss 2 located above
2 and the vertices 2e and 2 of the bottom surface 2a of each of the space trusses 2 constituting the basic space truss 22 located below.
Between them, tension wires 7, 7 for swing prevention are respectively stretched. In the space truss structure 31 having the above configuration, the same effect as the space truss structure 21 can be obtained. In addition, the space truss structures 21, 31 of the above example
Are composed of five basic space trusses 22. However, the present invention is not limited to this, and may be composed of two or more basic space trusses 22.

[0038]

As described above, according to the first aspect of the present invention,
In the space truss structure, a pair of space trusses are arranged facing each other and separated from each other on the left and right, and their bottoms are arranged horizontally above the ground, and the space trusses are connected by tension wires for connection. Connected, and further, each of the three-dimensional trusses is suspended from a support fixed to the ground by a tension wire for suspension, and is supported from the ground or the support by a tension wire for preventing rocking. Thus, by appropriately introducing tension to the respective wires, it is possible to provide a structure that is structurally stable, floats from the ground, and does not swing.

The space truss structure according to the second aspect is the first aspect.
In the above, since the suspension tension wires are stretched between the three vertices of the bottom surface of the space truss and the support, the space truss can be hung more stably.

The three-dimensional truss structure according to the third aspect uses a plurality of basic three-dimensional trusses composed of a pair of three-dimensional trusses connected by connecting tension wires, and the plurality of basic three-dimensional trusses are located below. The top of the base truss is positioned above the bottom of the basic space truss located above and stacked vertically, and the horizontal direction of the base space truss adjacent vertically is changed by 90 ° and placed at the bottom. The located basic space truss is suspended from a support fixed on the ground by a tension wire for suspension, and is supported from the ground or the support by a tension wire for preventing rocking. The basic space truss to be suspended is suspended from the top of the underlying space truss by the tension wire for suspension. Since the basic space truss to location is obtained by supported by tension wires for preventing the swing, by introducing an appropriate tension to the respective wire, the stacked stably in the vertical basic space truss,
It is possible to provide a structure which is structurally stable and does not swing while floating above the ground.

The space truss structure according to the fourth aspect is the third aspect.
The tension wire for suspension is stretched between the apex of the bottom surface of a pair of space trusses constituting a basic space truss located at the lowermost position and the support, and Since it is stretched between the apex of the bottom part of the pair of space truss forming the space truss and the upper apex of the pair of space truss forming the space truss located below, the base located above The space truss is suspended by a basic space truss located below while a pair of space truss constituting the space truss is connected by tension wires for suspension. Can be hung.

[Brief description of the drawings]

FIG. 1 is a perspective view of a space truss structure showing a first embodiment of the space truss structure of the present invention.

FIG. 2 is a front view of the space truss structure.

FIG. 3 is a plan view of the space truss structure.

FIG. 4 is a side view of the space truss structure.

FIG. 5 is a perspective view of a space truss structure showing a space truss structure according to a second embodiment of the present invention.

FIG. 6 is a front view of the space truss structure.

FIG. 7 is a plan view of the space truss structure.

FIG. 8 is a side view of the space truss structure.

FIG. 9 is a perspective view of a space truss structure showing a third embodiment of the space truss structure of the present invention.

FIG. 10 is a front view of the space truss structure.

FIG. 11 is a side view of the space truss structure.

FIG. 12 shows a third embodiment of the space truss structure of the present invention, and is a front view of the space truss structure.

FIG. 13 is a side view of the space truss structure.

[Explanation of symbols]

 1, 11, 21, 31 Space truss structure 2 Space truss 2a Bottom part 2d, 2e Apex of bottom part 4 Tension wire for connection 5 Support 6 Tension wire for suspension 7 Tension wire for swing prevention 22 Basic Space truss

Claims (4)

(57) [Claims] 1. A pair of three-dimensional trusses having a triangular pyramid shape are disposed so as to be opposed to each other on the left and right, and their bottom portions are horizontal at a position above the ground. Are connected by a tension wire for connection. Further, each of the three-dimensional trusses is suspended by a tension wire for suspension from a support fixed to the ground, and is used to prevent swinging from the ground or the support. A three-dimensional truss structure supported by a tension wire. 2. The space truss structure according to claim 1, wherein the suspension tension wire is stretched between three vertexes of a bottom portion of the space truss and a support. 3D truss structure. 3. A pair of three-dimensional trusses having a triangular pyramid shape are disposed so as to be opposed to each other on the left and right, and their bottom portions are horizontal at a position above the ground. Are stacked up and down such that a plurality of basic space truss connected by tension wires for connection are positioned so that the top of the underlying space truss is located above the bottom of the space truss located above. The basic three-dimensional truss vertically arranged adjacent to each other is arranged by changing the horizontal direction by 90 °, and the lowermost basic three-dimensional truss is provided with a tension wire for suspension from a support fixed on the ground. While being supported by a tension wire for preventing rocking from the ground or the support. Is suspended by a tension wire for suspension from the top of the basic space truss located below, and supported by a tension wire for preventing swing from the underlying space truss located below. A three-dimensional truss structure characterized in that: 4. The three-dimensional truss structure according to claim 3, wherein the tension wire for suspension is provided at a vertex of a bottom surface of a pair of three-dimensional trusses constituting a lowermost basic three-dimensional truss and the support. In the basic space truss that is stretched between the body and the upper and lower adjacent three-dimensional truss, the top of the bottom of a pair of space truss that constitutes the upper space truss and the lower space truss that constitutes the lower space A space truss structure which is stretched between upper vertices of a pair of space trusses.