JPH11236732A - Truss-shaped framed structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a framed structure, in which the number of parts can be decreased and the chord stretching works of a tendon are facilitated and which can be constructed at a low cost and has an excellent appearance. SOLUTION: Brackets are installed at the end sections of tensile members 10 giving tension to the framed structure 20 through mounting members respectively. The brackets integrally have flat connecting end sections having dimples in both surfaces at the front end sections of the brackets, and the tensile members 10 are coupled with columnar hubs 7 and hubs 7A for the tensile members or the columnar hubs 7 and hubs 7B for the tensile members by fitting the connecting end sections into the connecting grooves of the columnar hubs 7 and the hubs 7A for the tensile members or the columnar hubs 7 and the hubs 7B for the tensile members. Frames 6 are joined with the columnar hubs 7, and the columnar hubs 7 form truss nodes. The hubs 7A, 7B for the tensile members are installed at the upper-lower end sections of the hub connecting bodies 8, and cable-shaped tensile members 21A, 21B are stretched respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame structure constructed by a structural material comprising a joint and a frame, and more particularly to a structure such as a building or a structure in which a tension member applies tension between predetermined joints. The present invention relates to a truss-shaped frame structure.

[0002]

2. Description of the Related Art A truss-shaped frame structure has excellent features such as being smart, having high lighting and a large column-free space, and is therefore used in outdoor concert halls, gas stations, pools, exhibition halls, and the like. It is widely used for structures such as rooftops, side walls of buildings, domes for botanical gardens, temple domes, and the like. The truss-like frame structure of such a structure is constructed by connecting frames, which are the structural members, by joints.

[0003] There are two types of joint methods of the structural material in the truss-like frame structure, namely, a ball joint method, a columnar joint method such as a columnar shape, a square prism shape, and a triangular prism shape. Among these, the latter columnar joint method has the excellent features that the assembling work is simple because no joining by bolts or welding is required in the assembling, and high joint efficiency is obtained. Specifically, a connection groove is formed in a columnar joint (columnar hub) called a hub, and a connection end formed by crushing and a frame having connection ends at both ends are used to connect the connection end of the frame to the hub. (See, for example, U.S. Pat. No. 2,931,467, Japanese Utility Model Laid-Open No. 2-98121, and Japanese Unexamined Patent Application Publication No. 7-102633). The present invention relates to a truss-like frame structure employing the latter joint method.

There are various types of truss-like frame structures such as a dome type, a mosque type, a pyramid type, a flat structure type, a barrel vault type, and the like. In addition, there is a case where the structure is provided as a part of the structure. Among these truss structures, the present invention is particularly applicable to a flat structure type and a barrel vault type truss structure, and a frame structure for a dome type truss structure having a small rise ratio (described later). . Note that the mosque type is classified as the dome type because the shape of the apex is only slightly different from the dome type.

In such a truss-like frame structure,
Recently, there has been a demand for a structure having sufficient strength to withstand snowfall, strong earthquakes, etc., so when constructing large structures, use frames made of thick pipes, Various measures are taken, such as shortening the length of the frame or using a tension member.

The structure using the tension member is a structure in which a truss is rigidly increased by directly or indirectly applying a tension between predetermined hubs to suppress the bending of the truss. As an example, the structure is shown in FIG. ing. This frame structure has already been proposed by the present applicant (Japanese Patent Application No. 9-2).
No. 7757), which shows an example applied to a double layer flat structure type. In brief, the frame structure 1 is constructed in a truss shape by the upper body 2, the lower body 3, the bundle-shaped connecting frame (bunch for tension members) 8 connecting the upper body 2 and the lower body 3, and the tension members 10. Have been. As the upper body 2 and the lower body 3, a large number of frames 6 having the same structure are used, arranged in a grid shape so as to be orthogonal to each other, and both ends of which are columnar hubs (hereinafter also simply referred to as hubs) 7 ( 7A, 7B). Hub 7
A and 7B have a plurality of connecting grooves on the outer peripheral surface, and the connecting ends provided at the ends of the frame 6 are fitted into these connecting grooves from the axial direction of the hub to form truss nodes. I have. The vertically opposed hubs 7A and 7B are provided at both ends of the connection frame 8, respectively.

The tension member 10 is installed obliquely in the space between the upper body 2 and the lower body 3 so as to intersect the frame 6 and the bundle-shaped connecting frame 8. In this case, a total of eight frames 6 each having four upper and lower portions each forming a quadrilateral mesh, and a total of eight columnar hubs 7A and 7B each having four upper and lower portions to which the ends of these frames 6 are connected, A spherical joint 9 and eight tension members 10 are provided in a cubic space 4 formed by a total of four bundle-like connecting frames 8 connecting the columnar hubs 7A and 7B.
Is incorporated. The spherical joint 9 is located at the center of the space 4, one end of each tendon 10 is connected by screwing, and the tension member 10 is indirectly connected between the columnar hubs via the spherical joint 9.
The tension is given by. The eight tendon members 10 are oriented in the diagonal direction of the space 4, and the other ends are respectively connected to the brackets 11 attached by bolts near the upper and lower ends of each of the bundled connection frames 8 via the connection fittings 12. Have been.

In such a frame structure 1, tension is applied between the hubs 7 of the frame structure 1 by the tension members 10, so that the rigidity of the frame structure 1 is increased, and bending and destruction due to a load are effectively prevented. Can be suppressed.

The tension applied to the tension member 10 is applied when the truss-shaped frame structure is assembled and when the truss-shaped frame structure is assembled. Instead, tension may be applied to the tension member when a load other than its own weight or an external force is applied.

[0010]

However, in the above-mentioned conventional frame structure 1, the bracket 11 for connecting the tension member 10 needs to be attached to the bundle-like connecting frame 8 by welding, bolts, or the like. There is a problem in that the mounting work is cumbersome and time is required for constructing the frame structure, and the manufacturing cost increases. Furthermore, since the mounting position of the bracket 11 is shifted from the truss node, there is a problem that the aesthetic appearance of the frame structure 1 is impaired and a problem that an optimal node as a truss-like frame structure is not formed.

FIG. 15 is a schematic view of another conventional example using a tensioning member. Hubs constituting both ends of a barrel vaulted frame structure A are directly connected to each other by tensioning wires B to apply tension. This is an example in which a bundle C is installed in the middle part. Although illustration is omitted, in this example as well, the tendon is such that the brackets are appropriately attached to the hubs constituting both ends by welding or bolting, and the wire to which the connecting fitting is attached is tightened.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is an object of the present invention to easily attach a tensioning member, to construct an inexpensive structure, and to provide a good appearance. A truss-like frame structure is provided.

[0013]

According to a first aspect of the present invention, a plurality of frames having connection ends at both ends and a plurality of connecting grooves into which the connection ends of the frames are fitted are provided. In a truss-like framed structure composed of a number of columnar hubs having an outer periphery and a tension member for applying tension between predetermined hubs, a bracket having a connection end fitted into a connection groove of the columnar hub is provided. The fitting member is fitted to the columnar hub, and the tension member is coupled to the hub through the bracket.

According to a second aspect, in the first aspect,
The bracket is formed by cutting an extruded shape into a predetermined length.

According to a third aspect, in the first or second aspect, the tension member is adjustable in length.

According to a fourth aspect of the present invention, the first, second or third aspect is provided.
In the invention, the truss-like frame structure is one of a flat structure type, a barrel vault type, and a dome type having a small rise ratio.

According to a fifth aspect of the present invention, there are provided a plurality of frames which have connection ends at both ends and which are arranged so as to be orthogonal to each other to form a large number of square meshes, and the connection ends of these frames are fitted. A plurality of columnar hubs having a plurality of connecting grooves to be combined on the outer periphery, a bundle for tension members arranged at the center of each square mesh formed by the frame, and a plurality of connecting grooves on the outer periphery; A tension member hub provided at each of the upper and lower ends of the tension member bundle, a plurality of tension members connecting the tension member hub and the columnar hub forming the quadrangular mesh, and a connection end portion at the tip end. Brackets respectively attached to both ends of each of the tension members, and a connection end of the one-end side bracket of the tension member is fitted into a connection groove of the tension member hub,
The connection end of the other end side bracket is fitted in the connection groove of the columnar hub.

According to a sixth aspect based on the fifth aspect,
The tension member hubs provided at the upper end portion of the tension member bundle and the tension member hubs provided at the lower end portion are connected to each other by a tension member.

In the present invention, the tension member increases the rigidity of the frame structure by applying tension between predetermined hubs forming a truss-like frame structure (hereinafter simply referred to as a frame structure). When a load is vertically applied to the skeleton structure due to snow or the like, the skeleton structure bends downward. At this time, stress is generated in a direction in which the lower end of the frame structure spreads outward, and the tension member is further tensioned. For this reason, the tension member acts to push up the skeleton structure against the load, thereby suppressing bending of the skeleton structure. The connection between the bracket and the hub, just like the connection between the frame and the hub, only needs to fit the connection end provided on the bracket into the connection groove of the hub. As a result, the number of assembly steps can be reduced, and the types of parts can be reduced. Also, the bracket can be easily manufactured by cutting the extruded profile. In addition, since the tension member can be attached by the same working method as that of assembling the frame, and the tension can be directly applied to the hub itself, the stress acting on the frame structure can be easily calculated, and the truss-like frame structure can be easily calculated. It becomes the most suitable as the nodal structure of the body. In the present invention, the term "tensing member" includes any one of a stranded cable, a solid rod material, and an appropriately shaped member, such as an H-shaped steel member, or a combination thereof.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. 1 (A), (B),
FIG. 2C is a sectional view, a developed plan view, and a developed plan view of a main surface portion (BB plane) showing an example in which the present invention is applied to a single-layer barrel vault type frame structure. FIG. FIG. 3 is a sectional view taken along line III-III of FIG. 2, FIG. 4 is a sectional view taken along line IV-IV of FIG. 2, and FIG. 5 is a sectional view taken along line VV of FIG. FIG. 6 is a sectional view taken along line V in FIG.
FIG. 7 is a sectional view taken along the line VII-VII of FIG. 3,
8 (A), 8 (B) and 8 (C) are a front view, a plan view and a side view of the frame, FIG. 9 is a perspective view of the columnar hub and the end of the frame, and FIG. 11 (A) and (B) are a front view and a plan view of a connecting plate, and FIGS. 12 (A) and (B) are a front view and a plan view of another connecting plate. The same components as those shown in the section of the prior art are denoted by the same reference numerals. In FIG. 1B, the tension member 10 is indicated by a solid line, the frame 6 is indicated by a two-dot chain line, and in FIG. 1C, the frame 6 is indicated by a solid line.
The tension member 10 is indicated by a two-dot chain line.

In FIG. 1, a single-layer barrel vault type frame structure 20 has a large number of frames 6 arranged in a lattice and a bracket for connecting the ends of these frames 6 to the tension members 10. A large number of columnar hubs 7, a bundle 8 of tension members located at the center of a quadrangular mesh M formed by these columnar hubs 7 and the frame 6, and provided at upper and lower ends of the bundle 8 of tension members, respectively. It is constructed by the string member hubs 7A and 7B and is installed on the pedestal structure 22. Then, such a frame structure 20 is covered with a roof member (not shown) as necessary to complete a single-layer barrel vault type truss structure.

The pedestal structure 22 includes a concrete wall,
It consists of a panel body, a window body, a support, and the like, and has sufficient strength to support a truss structure. The tension member hub 7 is provided integrally at the upper and lower ends of the tension member bundle 8.
A and 7B are connected by cable-like tension members 21 (21A and 21B) in the span L direction of the frame structure 20, respectively.

Further, the structure and the like of the frame structure 20 will be described in detail with reference to FIGS. 8 and 9, the frame 6 is usually made of an aluminum alloy (eg, JIS).
A6061 and A6063 tempered from T1 to T4) or stainless steel SUS304, SUS316
The connection end 25 and the tapered portion 6A with the columnar hub 3 are formed by crushing both ends of the pipe by pressing or the like, and a plurality of dimples (convex portions) are formed on both surfaces of the connection end 25. And a locking portion 26 composed of
Thereafter, in the case of an aluminum alloy, T6 or the like with improved strength is used. When the connecting end 25 is fitted in the connecting groove 27 of the columnar hub 7,
The load applied in the axial direction of the frame 6 is transmitted to the hub 7 by engaging with an engaging portion 28 formed on the wall surface of the connecting groove 27 and formed of a convex portion and a concave portion. In this example, eight connecting grooves are formed in the hub as described later. In addition, since four orthogonal frames 6 are connected to one columnar hub 7, the connection end portions 25 of each frame 6 are fitted into every other connection groove 27 as shown in FIG. Is done.

Further, in general, when constructing a dome-shaped or mosque-shaped truss-shaped frame structure, the frame 6 has three angles other than the split angle θ (see FIG. 3) according to the arrangement position. That is, a coin angle α, a bend angle β, and a twist angle γ are provided, thereby making it possible to construct a dome having an arbitrary spherical degree. The coin angle α is the connection end 25
Angle and bend angle β with respect to the axial direction of the frame 6
Is the angle formed between the axis of the frame 6 and the axis of the connection end 25, and the twist angle γ connects the connecting groove 27 between the columnar hubs 7 having different adjacent heights and different centers of curvature in the hub axial direction via the frame 6. This is the angle formed between the connection ends 25 of the frame 6 to be connected. In the double-layer barrel vault type, the coin angle α of the connection end 25 is 40 °.
~ 90 °, bend angle β and twist angle γ are 0 ° ~
10 °, the coin angle α is 80 ° to 90 ° and the bend angle β is 0 ° to 35 ° in the dome shape.
°, and the twist angle γ is angled from 0 ° to 5 °, respectively. The outer diameter of the frame 6 is 25 to 300 mmφ,
The length is about 0.5 to 4 m, and the thickness is about 1 to 10 mm.

In FIG. 9, the columnar hub 7 is formed in a cylindrical shape by using an extruded shape or cast product of JIS A6082-T6 of aluminum alloy, SCS11 or SCS13 of stainless steel, and has a bolt insertion hole 30 at the center. doing. On the outer peripheral surface of the columnar hub 7, eight connecting grooves 27 having the engaging portions 28 on the groove wall surface are formed radially at regular intervals in the circumferential direction, and are perpendicular to the connecting grooves 27. The connection end 25 of the book frame 6 is fitted in the axial direction to form a truss node. However, the frame 6 is connected to every other connection groove 27, and a connection end 70 (see FIG. 12) of a bracket 57 described later is fitted into the remaining four connection grooves 27. A bolt 31 is inserted into the bolt insertion hole 30, and a washer 32 and a holding plate 3
3, the holding plate 33 is pressed against the upper and lower surfaces of the columnar hub 7 by fastening the nut 34, so that the connection ends 25 and 70 of the frame 6 and the bracket 57 are connected to the connection grooves 27.
Of the columnar hub 7 in the axial direction.
The outer diameter of the columnar hub 7 is about 50 to 200 mmφ, and the length is about 40 to 300 mm.

In FIG. 2, the tension member bundle 8 has an outer diameter of 24 in this example by A6061TE-T4 or the like.
It is formed of a pipe having a diameter of mmφ and a length of about 450 mm, and is located at the center of the rectangular mesh M. At both ends of the tension member bundle 8, the tension member hubs 7A and 7B are provided integrally by fitting, welding or the like, but not limited thereto, and the tension member hubs 7A and 7B are formed by extrusion molding. It is also possible to form the tension member bundle 8 integrally. In addition,
The tension member bundle 8 serves to increase the mechanical strength of the frame structure 20 together with the tension member 10 to constitute a bundle member.

The tension member hubs 7A and 7B have screw holes 39 and 40 at the center instead of the bolt insertion holes 30 described above.
(See FIGS. 5 and 10) The only difference is that they are formed from the columnar hub 7 described above, but the other configurations are completely the same. Therefore, eight connecting grooves 42,
43 are formed on the groove walls, and irregularities (engaging portions) 44 called dimples are formed on the groove walls.

2 and 10, the cable-like tension member 21 has an outer diameter of 3.19 in this embodiment.
A stainless steel cable of about mmφ is used. The upper cable-like tension member 21A is formed of two upper and lower cable-like tension member brackets 45a, 45 formed in a plate shape.
b, a bolt 48 is inserted into the insertion hole 46 and the washer 47 provided in the cable-like tensioning member brackets 45a, 45b, and the screw of the tensioning member hub 7A provided on the upper end side of the tensioning member bundle 8 By being screwed into the hole 39, the tension member hub 7A is fixed with a predetermined tension applied. Further, the cable-like tension member brackets 45a and 45b prevent a connection end 65 (see FIG. 11) of the bracket 56, which will be described later, from coming off from the connection groove 42 in the axial direction of the tension member hub 7A.

The bracket 45 for the cable-like tension member
a and 45b are JIS A6063BE-T in this example.
5 are formed in the same shape, and two grooves 49 are formed in parallel on the holding surfaces facing each other over the entire length.
Is connected. Here, in the present embodiment, an example is shown in which two cable-like tension members 21A are used, but the present invention is not limited to this, and one or two or more cables may be used. The cable-like tension member bracket 45a,
The bolts 45b and the bolts 48 are also used for mounting a roof panel member (not shown) on the tension member hub 7A.

The lower cable-like tension member 21B is made of a stainless steel cable having an outer diameter of about 3.19 mmφ in this example, similarly to the above-described upper cable-like tension member 21A. The bolts 53 are inserted into the cable-like tensioning member brackets 51a and 51b and the washer 52, and the screw holes 39 of the lower tensioning member hub 7B are inserted between the cable-like tensioning member brackets 51a and 51b (see FIG. 2). (See FIG. 5) is screwed from below to connect to the tension member hub 7B. Two cable-like tension members 21B are also used to apply a predetermined tension. The cable-like tensioning member bracket 51
Reference numerals a and 51b are formed exactly the same as the cable-like tensioning member brackets 45a and 45b.

Eight tension members 10 are used for each square mesh M. As the tension member 10,
In this example, JIS A50 which is an aluminum alloy
Outer diameter formed by 56BE-H34 etc. is 6mmφ
Solid rods of the order are used. Of the eight tension members 10, the four tension members 10 located above the columnar hub 7 are connected to the tension member hub 7 </ b> A provided on the upper end side of the tension member bundle 8 at one end via a bracket 56. The other end is connected via a bracket 57 to each of the four columnar hubs 7 forming a quadrangular mesh M. On the other hand, one of the remaining four tension members 10 located below the columnar hub 7 is connected via a bracket 56 to a tension member hub 7B provided on the lower end side of the tension member bundle 8, and the other. The ends are respectively connected via brackets 57 to four columnar hubs 7 forming the quadrangular mesh M. In addition, male threads 59 are formed at both ends of the tension member 10 in order to easily apply the tension member 10 in a state where a constant tension is applied.
Are screwed together. In this case, the externally threaded portions 59 formed at both ends of the tension member 10 are composed of a left-handed screw and a right-handed screw. Has been granted. In other words, when the tension member 10 is assembled and the tension member 10 is rotated to move the mounting members 60 at both ends in a direction approaching each other, tension is applied to the frame 6.
Note that the thickness and strength of the tension member 10 are appropriately determined according to given design conditions of the frame structure 20. A turnbuckle may be used as a means for applying a tension to the tension member 10.

The attachment member 60 attached to each end of the tension member 10 is made of aluminum alloy JIS in this embodiment.
By cutting the extruded section of A6063S-T5 into a predetermined length, the shape in plan view is formed into a U-shape, and a screw hole with which the male screw portion 59 of the tension member 10 is screwed is formed at the base. The base of the bracket 56 or the bracket 57 is inserted between both opposing ends of the mounting member 60 and is rotatably connected by bolts 62 and nuts 64.

As shown in FIG. 11, the bracket 56 is made of an aluminum alloy (JIS A606) in this embodiment.
3S-T5) is cut into a predetermined length, so that the width W is 31 mm, the height h is 30 mm, and the plate thickness T is 4 mm.
mm, and is formed on the base side with the bolt 6
One bolt insertion hole 63 through which the second member 2 is inserted is formed, and a connection end portion 65 having concaves and convexes (engaging portions) 66 called dimples on both surfaces is integrally formed at the distal end portion by crushing. The connection end 65 has the same shape as the connection end 25 of the frame 6 and has the connection groove 42 or the connection groove 43 of the tension member hub 7A or the tension member hub 7B.
And the engaging portion 66 is formed on the groove wall of the connecting groove 42 or the connecting groove 43.
(See FIG. 5).

The bracket 57 is attached to the end of the tension member 10 opposite to the tension member bundle 8 via the mounting member 60. This bracket 57 is the same as the above-described bracket 56 in that a connection end portion 70 having concaves and convexes (engaging portions) 69 called dimples on both surfaces is integrally provided at the front end portion as shown in FIG. ,
This embodiment is different in that the width is 31 mm, the height is 40 mm, the plate thickness is about 4 mm, which is larger than the bracket 56, and that two bolt insertion holes 71 are provided. The bracket 57 is provided with two tension members 10 vertically opposed by two bolts 72 and nuts 73 inserted into the bolt insertion holes 71.
0, and the connection end 70 is fitted in the connection groove 27 of the columnar hub 7 to connect the columnar hub 7 and the two tension members 10. The bracket 57 prevents the columnar hub 7 from coming off in the axial direction by the holding member 33 (see FIG. 7) together with the frame 6.

In such a frame structure 20, when the tension member 10 and the cable-like tension member 21 are given a predetermined tension, the downward bending of the frame structure 20 due to the load P can be suppressed. Strength can be increased. Since the tension member 10 is directly connected to the columnar hub 7 and the tension member hubs 7A and 7B via the brackets 56 and 57, the bracket 11 is attached to the conventional connection structure shown in FIG. As compared with a connection structure in which the tension member 10 is connected to the bracket 11, bolting and welding of the bracket 11 are not required, and the number of parts and man-hours can be reduced. Also,
In the case of the bracket 11, it is necessary to fix it to the tension member bundle 8 by bolts, welding, or the like.
7 are connected to the columnar hub 7, tensioning 7A, 7
B can be connected to the connection grooves 27, 42, 43 of B just by fitting in the same manner as the connection end 25 of the frame 6, so that the connection work of these brackets is also easy. Also,
When the bracket 11 fixed by conventional welding or the like is used, the mounting position is shifted from the truss node, but the brackets 56 and 57 can be connected to the truss node. It is the best form as a truss node without spoiling the aesthetic appearance of the truss. Further, since the brackets 56 and 57 need only be formed by cutting the extruded material to a predetermined length and performing a boring process, the manufacture thereof is also easy.

FIGS. 13A and 13B are schematic diagrams showing another embodiment of the present invention. FIG. 13A shows an example in which the present invention is applied to a double-layer barrel vault type frame structure 80.
(B) shows an example in which the invention is applied to a double-layer flat structure type frame structure 90. In the form of FIG. 13A, a tension member 10 composed of a cable-like tension member is directly connected between hubs 7 at both ends in the span direction of a frame structure 80, and a bundle T is used. The embodiment shown in FIG. 13B is a modification of the bracket 11 of FIG. 14 shown as a conventional example according to the present invention. Other configurations such as a structure for fixing the bracket 11 to the hub 7 are substantially the same as those of the above-described embodiment.

In the above-described embodiment, an example in which a solid rod is used as the tension member 10 has been described. However, the present invention is not limited to this.
Alternatively, a cable made of a stranded wire such as a galvanized steel wire may be used. In the above-described embodiment,
Examples of application to barrel vault type and flat structure type frame structures have been shown.
In particular, the present invention is suitably applied to a dome type (for example, about 0.05 to 0.2) frame structure having a small rise ratio (ratio of height to diameter in the case of a dome type).

[0038]

As described above, in the truss-like frame structure according to the present invention, since the tension member is connected to the connection groove of the hub via the bracket, welding and bolting for mounting the bracket are not required. There is no need to add special processing to the hub itself. Especially, since there is not much extra space around the hub, according to the present invention, it is only necessary to fit the connection end of the bracket into the connection groove of the hub, so that the stringing work of the tension member is easy, and Can be shortened, and the construction cost can be reduced. In addition, it becomes a neat joint in design. Also, the bracket cuts the extruded shape to the required length,
Since it is only necessary to make a hole, its manufacture is easy,
Manufacturing costs can be reduced. Further, an optimal truss node can be obtained by matching the axial direction of the tension member with the hub.

[Brief description of the drawings]

FIGS. 1A, 1B, and 1C are a cross-sectional view, a developed plan view, and a main surface (B-) showing an example in which the present invention is applied to a single-layer barrel vault type truss-like frame structure.
FIG. 4 is a developed plan view of (B side).

FIG. 2 is a front view showing a part of a main part of the skeleton structure in a cutaway manner.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is a sectional view taken along line VV of FIG. 2;

FIG. 6 is a sectional view taken along line VI-VI of FIG. 5;

FIG. 7 is a sectional view taken along line VII-VII of FIG. 3;

FIGS. 8A, 8B, and 8C are a front view, a plan view, and a side view of a frame.

FIG. 9 is a perspective view of a columnar hub and an end of a frame.

FIG. 10 is an exploded perspective view showing a connection structure between a tension member hub and a cable-like tension member.

FIGS. 11A and 11B are a front view and a plan view of a bracket.

12A and 12B are a front view and a plan view of another bracket.

13A is a diagram showing an example in which the present invention is applied to a double-layer barrel vault type frame structure, and FIG. 13B is a diagram showing an example in which the present invention is applied to a single layer flat structure type frame structure.

FIG. 14 is a side view of a main part of a conventional double-single-layer flat structure type frame structure using a tension member.

FIG. 15 is a perspective view of another conventional double-single-layer flat structure type frame structure using a tension member.

[Explanation of symbols]

1 ... flat structure type frame structure, 2 ... top body,
3 lower surface body, 4 space, 6 frame, 7 columnar hub,
7A, 7B: hub for tension member, 8: bundle for tension member, 10
... tension member, 20 ... single-layer barrel vault type frame structure, 21, 21A, 21B ... cable-like tension member, 25 ... connection end, 27 ... connection groove, 28 ... engagement portion, 42, 43 ... connection groove , 56, 57 ... Bracket, 6
5, 70: connection end, M: square mesh.

Claims (6)

[Claims] 1. A tension is applied between a plurality of frames having connection ends at both ends, a plurality of columnar hubs having a plurality of connection grooves on the outer periphery into which the connection ends of the frames are fitted, and a predetermined hub. A bracket having a connection end fitted into the connection groove of the columnar hub is fitted to the columnar hub, and the tensioning member is connected to the hub via the bracket. A truss-like frame structure characterized by being joined to a truss-like structure. 2. The truss-like frame structure according to claim 1, wherein the bracket is formed by cutting an extruded shape into a predetermined length. 3. The truss-shaped frame structure according to claim 1, wherein the tension member is adjustable in length. 4. The truss-shaped frame structure according to claim 1, 2 or 3, wherein the truss-shaped frame structure is one of a flat structure type, a barrel vault type, and a dome type having a small rise ratio. A truss-shaped skeleton structure characterized by being a skeleton-shaped structure. 5. A plurality of frames which have connection ends at both ends and which are arranged so as to be orthogonal to each other to form a large number of square meshes, and a plurality of frames into which the connection ends of these frames are fitted. A plurality of columnar hubs each having a plurality of connection grooves on the outer periphery, a tension member bundle arranged at the center of each square mesh formed by the frame, and the tension member bundle having a plurality of connection grooves on the outer periphery A tension member hub provided at each of the upper and lower ends, a plurality of tension members connecting the tension member hub and the columnar hub forming the quadrangular mesh, Brackets respectively attached to both ends of the tension member, wherein the connection end of the one-end side bracket of the tension member is fitted into the connection groove of the hub for the tension member, and the connection end of the other-end side bracket is provided. To A truss-like frame structure fitted in a connection groove of the columnar hub. 6. The trussed frame structure according to claim 5, wherein the tension member hubs provided at the upper end of the tension member bundle and the tension member hubs provided at the lower end of the bundle are connected by the tension members. A truss-like frame structure characterized by the following.