JP2759753B2 - Roof material receiving mounting structure of space truss - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof truss mounting structure for a space truss, and more particularly, to a roof cradle for supporting a building roof, which can be fixed to an upper surface of a node to which a space truss upper chord is joined. This is related to the mounting structure described above.

[0002]

2. Description of the Related Art In order to form a roof of a truss structure, a roof member receiver (moya) is sometimes supported by using nodes joining the upper chord members of a space truss. For example, FIG.
In (a) of FIG.
Then, a roofing material 45 such as a folded plate is attached via a roofing material receiver 44 and a mounting hardware 46. That is, one screw hole 43a similar to the case where the truss structure member 42 is joined is formed on the upper surface of the spherical node 43, and the horizontal part of the L-shaped mounting hardware 46 is attached to the screw hole 43a. And the bolt 44a and the nut 4
The back surface of the C-shaped steel 44 forming the roofing material receiver is fixed by 4b. According to such a structure, as shown in FIG. 3B, a large-area mounting hardware 46 fixed by a single bolt 43b using a screw hole 43a formed in the center of the upper surface of the node 43. , The roof material receivers 44, 44 whose end faces face each other can be supported on the narrow upper surface of the node 43.

FIG. 7A shows an example in which a large roof material receiver is required, and an H-section steel 54 is employed. The mounting hardware 56 is connected to the node 4 by the bolt 43b.
3 and is L-shaped as in the previous example, but the H-section steel 54 is partially cut off at the location indicated by the two-dot chain line of the flange, and as shown in FIG. When the bolt 56 rises and is in close contact with the web 54w, the bolt 5
4a and nut 54b.

In each of the above examples, the roofing material receivers are arranged so as to extend in a straight line, for example, in the left-right direction. FIG. This is an example in which 64 is attached. A square receiving plate 66 (see (b) in the figure) is used for mounting the four roofing material receivers 64, 64, and bolts 63b
Is fixed to the screw hole 63a of the node 63. In addition, each roofing material receiver 64 includes a bolt 64 a and a nut 64.
b.

[0005]

By the way, in any of the above-mentioned examples, the roofing material receiver is supported by the node via the mounting hardware or the receiving plate, and the supporting area on the upper surface of the node is enlarged. However, only one bolt for fixing the mounting hardware or the receiving plate to the substantially spherical node can be employed, and the strength of mounting the roofing material receiving to the node may not be sufficiently secured. Also, the mounting hardware and receiving plate must be manufactured,
As a matter of course, machining and welding work for that also become necessary. As a result, there is a problem that manufacturing costs and mounting costs increase. When an arch or a dome is formed by a three-dimensional truss, it is unavoidable that the shape of the mounting hardware attached to the node is further complicated. In such a case, the cost of building construction will further increase.

In the example shown in FIG. 6A, there is a misalignment of a distance L ₁ between the vertical line 43m of the node 43 and the vertical line 44m passing through the center of the roofing material receiver 44. Also in FIG. 7A, the vertical line 43m of the node 43 and the roof material receiver 5
Misalignment distance L ₂ between the vertical line 54m of 4 occurs.
If there is such a deviation from the center of the node, the load from the roofing receiver acts off the center of the node, and the mounting hardware must be sufficiently rigid to withstand the moment. Or, the arrangement of the roofing material may be irregular, deviating from the center of the node. As a result, on-site work costs and manufacturing costs increase. Further, in the example of FIG. 8B, even if one of the opposing sets of the roofing material receivers is to be made continuous, the bolts 63b for fixing the receiving plate 66 make it impossible or the mounting operation is extremely troublesome. There are disadvantages that can be significant.

[0007] When a glass roofing material is employed, as shown in FIG. 9, a mounting metal 76 to which a glass fixing device 77 can also be mounted between adjacent roofing material receivers 74, 74 is used. Since this metal fitting 76 is arranged above the center of the node 73, not only the fixing of the roof material receivers 74, 74 but also the fixing device 77 made of aluminum sash and sealing rubber can be easily applied to the glass roof material 75, 75. It can be placed at the boundary. However, it is inevitable that the mounting hardware 76 is complicated, and the work of mounting the glass roofing material is complicated, and the cost of the apparatus is significantly increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to reduce the number of parts by easily securing a wide flat surface on the top of a node and forming a plurality of screw holes in that portion. And the mounting strength of the roofing material receiver at the node can be improved, the misalignment between the roofing material receiver and the node is reduced, and the layout of the roofing material is simplified,
An object of the present invention is to provide a three-dimensional truss roof material receiver mounting structure capable of reducing the production cost of roof materials and roof material receivers and the cost of site mounting costs while avoiding complicated installation setup.

[0009]

The present invention is applied to a roof structure in which a roof material receiver is attached to a node to which the upper chord of the space truss is connected by using a screw hole formed on the upper surface of the node. The feature of this is that, with reference to FIG. 1, the node 3 is formed in a shell shape and the flat portion 3A is arranged in an upward position, and a plurality of roofing material receivers 4, 4 are attached to the flat portion 3A. That is, a plurality of screw holes 3a are provided for fixing.

As shown in FIG. 3, the flat portion 13A has inclined surfaces 13M on which the left and right portions are inclined in different directions so that the end portions of the opposing roof material receivers 14, 14 can be placed.
13N is provided.

Referring to FIG. 4, a rectangular steel pipe 26 is fixed at the center of a flat portion 23A formed on the upper surface of node 23, and a roof is disposed such that the ends are opposed to each other with the rectangular steel pipe 26 interposed therebetween. Glass roofing materials 25,2
5 is placed. A securing member 27 sandwiching the glass roofing material 25 from above and below across the opposing edges of the glass roofing material 25 placed on each roofing material receiver 24, forms a square steel pipe 26.
It is fixed to.

[0012]

The upper chord members 2 and 2 of the truss structural members constituting the space truss are joined to the node 3 formed in a shell shape and having the flat portion 3A at the top. The end of each roofing material receiver 4 is placed on the flat portion 3A of the node 3, and is directly fixed to the node 3 using the screw hole 3a provided in the flat portion 3A.

The ends of the roofing receivers 14 and 14 are placed on the inclined surface 13M (see FIG. 3) formed on the left portion and the inclined surface 13N formed on the right portion and inclined in different directions. The roofing material receivers 14, 14 are directly attached to the nodes 13 on the surfaces 13M, 13N. Adjacent roof material receiver 1
Since the angles 4, 4 are formed along the inclined surfaces 13M, 13N, an arch or a dome-shaped roof can be formed.

A square steel pipe 26 is fixed to the center of the flat portion 23A of the node 23 (see FIG. 4), and a securing member 27 for sandwiching the glass roofing material 25 from above and below is attached to the square steel pipe 26. The roof material receivers 24, 24 are arranged so that the ends thereof face each other with the rectangular steel pipe 26 interposed therebetween, and the glass roof materials 25, 25 are placed thereon. A securing member 27 is attached so as to straddle opposing edges of the glass roofing materials 25, 25 placed on the respective roofing material receivers 24, 24, and the roofing materials 25, 25 are fixed from above and below.

[0015]

According to the present invention, a bullet-shaped node has a wide flat portion on the upper surface, and the number of screw holes for mounting a roofing material receiver can be formed more than before. Therefore, the end of the roofing material receiver is firmly fixed to the node, and the mounting strength is remarkably increased, and the roofing material can be realized with a simple operation. No metal fittings for relaying the roofing material receiver to the node are required, and the structure can be simplified.
The roofing material receiver can be arranged in the same positional relationship with the center of the node, which makes it easier to arrange the roofing material and suppresses the diversification of dimensions, eventually reducing manufacturing costs and on-site installation costs. In addition, aesthetic design accompanying the simplification of the space truss becomes possible.

If inclined surfaces are formed on the left and right sides of the upper surface of the node, the roofing material can be supported in an inclined posture via the roofing material receiver placed on the inclined surface, and the building having an aesthetic sense such as an arch or a dome can be provided. Realization is promoted.

If a square steel pipe is arranged on the upper surface of the node and the securing member is attached, the connection and fixation of the adjacent glass roofing material located immediately above the node can be realized with a simple structure.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a structure for mounting a roofing material of a space truss according to the present invention. FIG. 1A shows a roof structure in which a roof material receiver is attached to a node 3 to which the upper chord materials 2 and 2 of the space truss 1 are connected by using screw holes formed on the upper surface thereof. The node 3 is formed in a shell shape instead of the usual substantially spherical shape, and is arranged with the flat portion 3A facing upward. A plurality of desired screw holes 3a are provided in the flat portion 3A, and two or more roofing material receivers 4, 4 can be directly attached and fixed. . In this example, the roofing material receiver 4 is a C-shaped steel,
The roofing material 5 is placed thereon and fixed separately. As shown in FIG. 2B, two screw holes 3a, 3a are provided in the flat surface 3A of the node 3, and bolts 3b, 3
b (see (a) of FIG. 1) is screwed so as to fix the lower portions of the roofing material receivers 4 and 4, that is, the center of the lower piece of the C-shaped steel. Of course, the number of screw holes can be arbitrarily selected.
It can also be arranged at intervals of degrees.

FIG. 2A shows an example in which the size of the roof material receiver is increased, and an H-shaped steel 7 is employed. In this case, the web 7w of the roofing material receiver 7 is arranged so as to be vertical,
The flange 7f is bolted to the flat portion 8A of the node 8 on the left and right sides of the web 7w. This example is an example in which the roof material receivers 7, 7 are substantially crossed as shown in FIG. 7B, and the roof material receiver 7A in the left-right direction is continuous. Therefore, the front and rear direction is divided into two opposing roofing material receivers 7B and 7C. Thus, even when a large number of roofing material receivers 7, 7 such as three or four on one node 8, a flat surface 8 is provided.
Because A is wide, at least two screw holes 8a, 8a can be provided for each roofing receiver.

FIG. 3 shows each roof material receiver 1 in which the flat portion 13A of the node 13 is inclined in different directions between the left portion and the right portion.
Sloped surface 13M, 1 on which end portions of 4, 14 can be placed
This is an example in which 3N is formed. This is a form that is adopted when forming an arched or dome-shaped roof,
In the example, a C-section steel is adopted as the roofing material receiver. This is the same as the example in FIG. 1 except that the flat portion 13A is divided into two and forms an angle, but it is needless to say that an H-shaped steel can be used as a roofing material receiver also in this example. Further, if the flat portion 13A is divided into four surfaces divided into 90 degrees, a roof material receiver which is also inclined in the front-rear direction can be attached. Incidentally, since the upper chord members 12, 12 are also attached so as to be inclined in parallel with the roofing material receivers 14, 14, the mounting surface 13c of the upper chord member 12 at the node 13 is vertical as in FIGS. It is not a plane and is slightly inclined.

In any of the above examples, a wide flat surface is secured on the upper surface of the node, and a large number of screw holes for mounting the roofing material receiver can be formed. As a result, the end of the roofing material receiver is firmly fixed to the node, and the mounting strength is significantly increased. Installation work is also simplified, and construction costs can be reduced. No metal fittings for relaying the roof material receiver to the node are required, and the structure can be simplified. The roofing material receiver can be arranged in the same positional relationship with respect to the center of the node, so that the roofing material can be easily arranged and the dimensions can be diversified as little as possible. A beautiful design with the simplification of the space truss is also possible. Also,
If the flat part has slopes inclined in different directions, it is possible to put a roofing receiver on each side, and a roof with an aesthetic sense such as an arch or a dome with a roofing material attached to the roofing receiver Building is easily realized.

FIG. 4 shows the glass roofing material 2 in the roofing material receiver 24.
This is an example in which 5 is placed. The node 23 is formed in a shell shape and is arranged in a posture in which the flat portion 23A faces upward. A square steel pipe 26 is fixed to the center of a flat portion 23A formed on the upper surface of the node 23 with bolts 26a, and meshed in roof material receivers 24, 24 arranged so that the ends face each other with the square steel pipe 26 interposed therebetween. Glass roofing materials 25, 25, such as glass, are mounted. A securing member 27 is attached to the square steel pipe 26 with screws or the like,
The glass roofing material is fixed to the glass roofing material 25 from above and below across the opposing edges of the glass roofing material 25.
The securing member 27 includes a support member 28 fixed to the square steel pipe 26.
And a glass holder 29. The support member 28 includes a channel 28a, a column 28b erected on the channel 28a, and left and right support arms 28c that support the glass roofing material 25 via a rubber seal 28m. On the other hand, the glass holder 29
Has a spring plate member 29a for pressing the upper surface of the glass roofing member 25 through a rubber seal 29n, and a screw bar member 29b screwed into a screw hole formed in the support 28b to hold the spring plate member 29a. doing.

As described above, if the rectangular steel pipe 26 is fixed to the upper surface of the node 23 and the securing member 27 is provided to straddle the opposite edge while sandwiching the glass roofing material 25 from above and below,
The flat upper surface of the node 23 can also be used for fixing the glass roof material, and the mounting structure is simplified.
Of course, connection and fixation of the adjacent glass roofing material located immediately above the node can be realized with a simple structure. The securing member 27 is provided with a groove 28a. Even if there is rainwater that has invaded beyond the rubber seals 29n and 28m, it can function as a rain rail and can be separately collected and drained.

FIG. 5 shows an example in which the securing member 27 for fixing the glass roofing material 25 described above is applied when the flat surfaces 33A and 33N of the node 33 are formed with inclined surfaces 33M and 33N. In the same manner as in the example of FIG.
5 can be fixed. In addition, due to the arrangement of the rectangular steel pipe 26, a horizontal plane 33
C is secured, and inclined surfaces 33M, 33N on which the roof material receivers 34, 34 are placed are formed on both sides thereof. By the way, Figure 3
In the example of FIG. 5 and the example of FIG. 5, the angle of the inclined surface formed at the node is, of course, arbitrarily selected, and it is needless to say that the angles of both the inclined surfaces need not be the same.

As can be understood from the above description, when a shell-shaped node is adopted for the roof material receiving and mounting structure of the space truss,
The flat surface formed on the upper surface of the node can be made wider than before. Therefore, effects such as increasing the number of screw holes for attaching the roofing material receiver to the node and increasing the mounting strength of the roofing material receiver to the node are exhibited. Furthermore, since the roofing material receiver can be directly attached to the node without using the relay bracket, the arrangement and dimensions of the roofing material can be easily adjusted. As a result, it is possible to reduce the cost of manufacturing the roofing material and the roofing material receiver and the cost of installing the roofing material. In addition, the simplification of the space truss and the resulting aesthetic design are realized.
In addition, when the roof material receivers extending in the left-right direction or the front-rear direction intersect at the upper surface of the node, the roof material receiver extending in any direction can be securely mounted and fixed by adopting a bullet-shaped node. it can.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a structure for mounting a roofing material receiver of a space truss according to the present invention, wherein (a) is a structural diagram in which a C-shaped steel roofing material receiver is mounted on a bullet-shaped node, The II line arrow view.

2A is a mounting structure diagram when an H-section steel is used as a roofing material receiver, and FIG. 2B is a plan view of FIG.

FIG. 3 is a structural view of a roofing material receiving and mounting structure of a space truss using a node whose upper surface is inclined left and right.

FIG. 4 is a mounting structure diagram when a glass roof material is used.

FIG. 5 is a structural view in a case where a roofing material receiver is placed on a node having an inclined upper surface and a glass roofing material is fixed.

6 (a) is a prior art, and FIG. 6 (a) is a mounting structure diagram in which a roof member receiver of C-shaped steel is fixed via mounting hardware;
(B) is a view taken along line VI-VI of (a).

7 (a) is a prior art, and FIG. 7 (a) is a mounting structure diagram for fixing an H-section steel roof material receiver, and FIG. 7 (b) is a VII of FIG.
-VII line view.

FIGS. 8A and 8B show different prior arts, in which FIG. 8A is a mounting structure diagram using a receiving plate, and FIG.
The II line arrow view.

FIG. 9 is a mounting structure diagram of a conventional technique showing a procedure for fixing a glass roof material.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Space truss, 2 ... Upper chord material, 3 ... Node, 3A ... Flat part, 3a ... Screw hole, 4 ... Roof material receiver (C-shaped steel), 7, 7
A, 7B, 7C: Roof material receiver (H-section steel), 8: Node,
8A: flat portion, 8a: screw hole, 12: upper chord material, 13: node, 13A: flat portion, 13M, 13N: inclined surface, 14
... Roofing material receiver, 23 ... Node, 23A ... Flat part, 24 ...
Roof material receiver, 25: glass roof material, 26: square steel pipe, 2
7: securing member, 33: node, 33A: flat portion, 33
M, 33N: inclined surface, 34: roofing material receiver.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-200947 (JP, A) JP-A-7-292283 (JP, A) JP-A-6-57867 (JP, A) 81417 (JP, U)

Claims (3)

(57) [Claims] 1. A roof structure in which a roof material receiver is attached to a node to which the upper chord member of a space truss is connected by using a screw hole formed on an upper surface of the node, wherein the node is formed in a shell shape and has a flat portion. A roof truss mounting structure for a space truss, wherein a plurality of screw holes for directly mounting and fixing a plurality of roof louvers are provided on a flat portion of the roof truss. 2. The flat part according to claim 1, wherein the left part and the right part are provided with an inclined surface on which an end part of each roofing material receiver facing the inclined part in a different direction can be placed. The described roof truss mounting structure of the space truss. 3. The roofing material receiving and mounting structure for a space truss according to claim 1, wherein a rectangular steel pipe is fixed to a center of a flat portion formed on an upper surface of the node, and the rectangular steel pipe is sandwiched between the rectangular steel pipes. The glass roofing material is placed on the roofing material receiver arranged so that the ends are opposed to each other, and the glass roofing material is straddled across the opposite edge of the glass roofing material placed on each roofing material receiver from above and below. The securing member sandwiched between
A roof truss mounting structure for a space truss, which is fixed to the square steel pipe.