JPH1061003A - Space truss structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate an assembly work of a space truss structure by providing a joint member in a pyramid-shaped unit formed from a top chord and lattice member to join a lower chord to the joint member, in the space truss structure. SOLUTION: A frame body F comprising top chords 11 is formed from angle materials, and lattice members 12 are welded between the frame body F and a joint member 13 to manufacture an inverted pyramid-shaped unit 10 at a factory. At a construction site, bolts are inserted into through holes 14 provided in the angle materials to join the top chords 11 to each other and lower chords 21 are joined to the joint member 13 to form a space truss structure T. The member 13 has a hollow truncated cone shape or a pyramid shape, and a joint piece 21a is provided at an end of the lower chord 21 so that the chord 21 can be joined easily to a joint part provided on the member 13 by means of welding, bolts, or screws. Thus a construction work can be remarkably simplified, a construction period can be shortened, quality can be improved by factory manufacturing, and the units 10 can be stacked and easily stored and transported.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a space truss structure. More specifically, the present invention relates to a three-dimensional truss structure that eliminates the need for a lattice connection work at a construction site and simplifies a lower chord connection work.

[0002]

2. Description of the Related Art Conventionally, in a three-dimensional truss structure t shown in FIG. 22, a lattice material b, a chord material a, a, a,.
are welded to the upper ends of the lower chord members c, c, c,... and the lattice members b, b, b,. The lower end of lattice members b, b, b,... and one end of lower chord members c, c, c,... are connected to a short cylindrical joining tube d having a diaphragm e built therein corresponding to the joining positions of c, c, c,. Are joined by welding.

However, when such a joining structure is employed, welding to the upper chord members a, a, a,... Of the lattice members b, b, b,. When joining the lower chords c, c, c,... To the joining cylindrical short pipe d, in order to facilitate the setting, FIG.
As shown in FIG. 4, the lower chord members c,
are provided in advance at positions where c, c,... are joined, and the lower chord material c is provided.
Must be machined in a curved shape along the joining surface of the joining cylindrical short pipe d, which leads to an increase in the number of parts and an increase in the number of processing steps, and also an increase in cost. Is calling.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems in the prior art, and eliminates the need for connecting a lattice material at a construction site and simplifies the connection work for a lower chord material. The objective is to provide a three-dimensional truss structure.

[0005]

A three-dimensional truss structure according to the present invention comprises an upper chord member and a lattice member formed into a quadrangular pyramid-shaped unit, and a lower chord member joined to a joint member provided below the unit. It is characterized by.

In one embodiment of the three-dimensional truss structure of the present invention, for example, the joining member comprises a bottom flat plate and a joined body erected on the bottom flat plate, and a lower chord member is joined to the bottom flat plate.

[0007] Also, the joining of the lower chord material to the bottom plate is as follows.
For example, the lower chord member is joined on the bottom flat plate while being joined, or the lower chord member is joined on the back surface of the bottom flat plate while being abutted.

In another embodiment of the three-dimensional truss structure of the present invention, the connecting member is a cylindrical body having a male screw body erected on the surface, while the lower chord member has a male screw at the tip end, and Is screwed into the female screw body to join the lower chord material.

In this embodiment, it is preferable that the female screw body is prevented from loosening.

[0010]

Since the space truss structure of the present invention is constructed as described above, the space truss structure can be connected by bolts and the lower chord members can be connected to the connection members provided at the lower part of the unit by a simple operation. Is completed, the construction is greatly simplified, thereby significantly shortening the construction period and significantly reducing the construction cost. In addition, since the units constituting the main part of the space truss are manufactured at the factory, the quality of the space truss is improved. Further, since the units can be stacked, storage and transport can be efficient.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on embodiments with reference to the accompanying drawings, but the present invention is not limited to only such embodiments.

First Embodiment A space truss structure T according to a first embodiment of the present invention is shown in FIGS.
The three-dimensional truss structure T is, as shown in FIG.
Upper chords 11, 11, 11, 11 and lattices 12, 12,
Are joined together by bolting, and a lower chord material 21 is attached to a joining member 13 provided at a lower portion of the unit 10. Are joined to form a space truss T.

Specifically, the unit 10 includes upper chord members 11, 11, 11 formed by a frame body F with the upper surface of the angle member facing inward and the back thereof facing downward on the outside. , 11, and lattice members 12, 12, 12, 12 are attached to the four corners of the frame body F by welding at predetermined angles inward and downward, and the lattice members 12, 12, 1 are formed.
The joining member 13 having a desired shape at the meeting points 2 and 12
And the lower ends of the lattice members 12, 12, 12, 12 are joined by welding. Also, on the back of the angle member, as shown in FIGS. 1 and 4, through holes 14, 14,... For bolt insertion are provided at a predetermined pitch. Then, the unit 10 is manufactured in a factory and transported to a construction site.

In FIG. 3, for convenience of drawing, the upper chord members 11, 11 made of angles that are back-to-back are illustrated with a gap provided between them. This is the same in FIGS. 8, 13 and 18 described below.

As shown in FIGS. 5 (a) and 5 (b), the joining member 13 is a hollow truncated cone 15 or a truncated square pyramid 16. Diaphragms 15a and 16a are provided inside the portion where the lower chord material 21 of the joining member 13 is joined.
Is provided. The joining of the lower chord material 21 to the joining member 13 is performed, for example, by welding in a state where the end of the joining piece 21 a provided by flattening the end of the lower chord material 21 is in contact with the side surface of the joining member 13. Alternatively, the joining piece 21a is joined by bolt joining to an engaging piece (not shown) provided on the joining member 13 corresponding to the joining piece 21a.

As described above, according to the first embodiment,
The three-dimensional truss is formed by a simple operation in which the units 10, 10, 10,. The completion of T greatly simplifies construction, thereby significantly shortening the construction period and significantly reducing construction costs. In addition, since the unit 10 forming the main part of the space truss T is manufactured at the factory, the quality of the space truss T is improved. Further, since the units 10 can be stacked, storage and transportation can be performed efficiently.

Second Embodiment A space truss structure T according to a second embodiment of the present invention is shown in FIGS.
The three-dimensional truss structure T is obtained by modifying the joining member 13 of the first embodiment. That is, in the second embodiment, the joining member 13 is composed of the bottom flat plate 31 joined to the lower chord material 21 and the joined body 32 joined to the lattice material 12 erected at the center on the bottom flat plate 31. Consists of As a specific example of the joining member 13, as shown in FIG. 9, there is a member in which a truncated square pyramid 33 is erected on a bottom flat plate 31. In this case, each surface of the truncated pyramid 33 is the lattice material 12
Is disposed on the bottom flat plate 31 toward the lower end of the bottom plate. Alternatively, as shown in FIG. 10, there is one in which a hemisphere 34 is erected on the bottom flat plate 31. Note that the joined body 32 is not limited to the above, and may be a cylindrical body, a truncated triangular pyramid, or a truncated hexagonal pyramid.

Then, a lower chord material side joining piece 21b obtained by flattening the tip of the lower chord material 21 is placed on the end 31a of the bottom flat plate 31 at the construction site, and the two pieces are bolted together to unit 10. And the lower chord material 21 are joined to form the space truss T.

As described above, according to the second embodiment,
As in the first embodiment, the units 10, 10, 10,.
The three-dimensional truss T is completed by a simple operation of bolting each other together and bolting the joint piece 21b provided at the end of the lower chord material 21 to the joint member 13 provided at the lower part of the unit 10. Significant simplification, thereby significantly shortening the construction period,
Construction costs are also significantly reduced. Further, the quality of the space truss T is improved because the unit 10 which is a main part of the space truss T is manufactured at the factory. Further, since the units 10 can be stacked, storage and transportation can be performed efficiently.

Third Embodiment A three-dimensional truss structure T according to a third embodiment of the present invention is shown in FIGS. 11 to 13. The three-dimensional truss structure T is a modification of the joining member 13 of the second embodiment. That is, in the third embodiment, the end of the bottom flat plate 31 is retracted to the vicinity of the joined body 32. As a specific example of the joining member 13, as shown in FIG.
There is one that stands five. In this case, each surface of the square pillar 35 is disposed on the bottom flat plate 31 toward the lower end of the lattice 12. Alternatively, as shown in FIG. 15, there is an apparatus in which a hemisphere 34 is erected on the bottom flat plate 31. The joined body 32 is not limited to the above, and may be a cylindrical body,
It may be a triangular prism or a hexagonal prism.

On the back surface of the bottom flat plate 31, lower chord material side joining pieces 21b, 21b formed by flattening the front ends of the left and right or front and rear lower chord materials 21, 21 at the construction site are superposed and positioned. The unit 10 and the lower chord material 21 are joined by bolting the joining pieces 21b, 21b to the bottom flat plate 13, and the space truss T is formed.

As described above, according to the third embodiment,
As in the second embodiment, the units 10, 10, 10,.
The three-dimensional truss T is completed by a simple operation of bolting each other together and bolting the joint piece 21b provided at the end of the lower chord material 21 to the joint member 13 provided at the lower part of the unit 10. Significant simplification, thereby significantly shortening the construction period,
Construction costs are also significantly reduced. Further, the quality of the space truss T is improved because the unit 10 which is a main part of the space truss T is manufactured at the factory. Further, since the units 10 can be stacked, storage and transportation can be performed efficiently.

Embodiment 4 FIGS. 16 to 1 show a space truss structure according to Embodiment 4 of the present invention.
9, the three-dimensional truss structure T is obtained by modifying the joining member 13 of the first embodiment. That is, in the fourth embodiment, the joining member 13 is a cylindrical body 40 such as a round pipe 41 shown in FIG. 20A or a square pipe 42 shown in FIG. Male threaded bodies 40a, 40a,
… Is established. Further, a diaphragm 40b is provided on the tubular body 40, similarly to the joining member 13 of the first embodiment.

The male screw bodies 40a, 40a,.
At the construction site, the front end portion 21c of the left and right or front and rear lower chord material 21 which has been machined is attached to one end of the inner surface of the joining member 1.
The unit is formed by joining via a cylindrical coupler 44 (see FIG. 21) in which a female screw corresponding to the male screw of the third male screw body 40a is formed and a female screw corresponding to the male screw of the lower chord material 21 is formed at the other end. The lower truss 10 is joined to the lower chord material 21 to form the space truss T. In this case, if the male screw body 40a of the joining member 13 is right-handed, the male screw of the lower chord material 21 is left-handed. In order to prevent loosening after joining, it is preferable to screw the cylindrical coupler 44 to the lower chord material 21 after joining.

As described above, according to the fourth embodiment,
As in the first embodiment, the units 10, 10, 10,.
The three-dimensional truss T is formed by a simple operation in which the bolts are connected to each other and the male screw provided at the end of the lower chord material 21 and the male screw provided to the connecting member 13 provided at the lower part of the unit 10 are connected by the coupler 44. This greatly simplifies construction, thereby significantly shortening the construction period and significantly reducing construction costs. Further, since the units constituting the main part of the space truss T are manufactured at the factory, the quality of the space truss T is improved. Further, since the units 10 can be stacked, storage and transportation can be performed efficiently.

[0026]

As described in detail above, according to the present invention,
The three-dimensional truss is completed simply by bolting the units together and bolting the joint piece provided at the end of the lower chord to the joint member provided at the lower part of the unit, so construction is significantly simplified. Accordingly, an excellent effect that the construction period is significantly shortened and the construction cost is also significantly reduced is obtained. Also,
Since the main unit of the space truss is manufactured at the factory, the effect of improving the quality of the space truss can be obtained. Further, since the units can be stacked, there is an effect that storage and transportation can be efficiently performed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a space truss of a space truss according to a first embodiment of the present invention, in which a lower chord material is separated.

FIG. 2 is a plan view of the space truss of the embodiment.

FIG. 3 is a side view of the same.

FIG. 4 is an enlarged side view of the same.

5A and 5B are perspective views of the joining member according to the embodiment, in which FIG. 5A shows a truncated cone, and FIG. 5B shows a truncated pyramid.

FIG. 6 is a perspective view showing a space truss according to a second embodiment of the present invention, in which a lower chord material is separated.

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

FIG. 8 is a side view of the same.

FIGS. 9A and 9B show an example of a joining member in the embodiment, wherein FIG. 9A is a plan view in which a lower chord material is omitted, and FIG. 9B is a side view.

FIG. 10 is a side view showing another example of the joining member in the embodiment.

FIG. 11 is a perspective view showing a space truss of a third embodiment of the present invention in which a lower chord material is separated.

FIG. 12 is a plan view of the space truss of the embodiment.

FIG. 13 is a side view of the same.

14A and 14B show an example of a joining member according to the embodiment, wherein FIG. 14A is a plan view in which a lower chord material is omitted, and FIG. 14B is a side view.

FIG. 15 is a side view showing another example of the joining member in the embodiment.

FIG. 16 is a perspective view showing a space truss of a three-dimensional truss according to Embodiment 4 of the present invention, in which a lower chord material is separated.

FIG. 17 is a plan view of the space truss of the embodiment.

FIG. 18 is a side view of the same.

FIG. 19 is an enlarged side view of the same.

FIG. 20 is a perspective view of the joining member of the embodiment,
(A) shows a round pipe shape, and (b) shows a square pipe shape.

FIG. 21 is a perspective view of the junction coupler in the embodiment.

FIG. 22 is a plan view of a conventional space truss.

FIG. 23 is a detailed view of a part A in FIG. 22;

FIG. 24 is an explanatory view of a joint portion of a lower chord material in a conventional space truss.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Unit 11 Upper chord material 12 Lattice material 13 Joining member 14 Through hole 21 Lower chord material T Space truss, space truss structure F Frame

Claims (6)

[Claims] The three-dimensional truss structure is characterized in that the upper chord material and the lattice material are quadrangular pyramid-shaped units, and the lower chord material is joined to a joining member provided below the unit. 2. The space truss according to claim 1, wherein the joining member comprises a bottom flat plate and a joined body erected on the bottom flat plate, and a lower chord material is joined to the bottom flat plate. Construction. 3. The space truss structure according to claim 2, wherein a lower chord material is joined on the bottom flat plate in a state of being placed thereon. 4. The space truss structure according to claim 2, wherein a lower chord member is joined to a back surface of the bottom plate in a state where the lower chord member is in contact with the bottom plate. 5. The joining member is a cylindrical body having a male screw body standing upright on the surface, while the lower chord material has a male screw at a tip portion, and both male screws are screwed into the female screw body to form a lower chord material. The space truss structure according to claim 1, wherein the space truss structure is joined. 6. The space truss structure according to claim 5, wherein the female screw body is prevented from being loosened.