JPS6333537B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a method of constructing a three-dimensional truss that forms the frame of a building by assembling truss constituent members in a mesh pattern, and is mainly applicable to large spaces such as warehouses, gymnasiums, hangars, leisure centers, etc. Use for structure.

BACKGROUND ART Buildings with three-dimensional truss structures constructed by assembling truss members in the form of a mesh are known and widely used, in which upper chord members and lower chord members are constructed as a rectangular frame with a belly member. However, when assembling rectangular frames, conventionally they are attached to separately made intersection mounting members and joined together, or the bottom material at the end of the rectangular frame is often bolted on-site, which requires a large number of parts. Therefore, the installation work was time-consuming.

Therefore, in this invention, we attempted to improve the method of constructing a three-dimensional truss with the following objectives in mind.

Simplify on-site assembly and shorten construction time.

Cost reduction by reducing the number of parts and mass production.

Improving safety when working at heights.

To provide a joint structure that can be assembled into various truss shapes such as square, rhombus, and triangle.

The present invention will be described below based on illustrated embodiments.

FIG. 1 shows a rectangular frame 1 constituting a truss component used in the present invention. Each of the rectangular frames 1 includes a straight upper plate 2 of approximately equal length and parallel to each other, a straight lower plate 3, and a belly member 4 provided perpendicularly thereto.
In the embodiment shown in FIG. 1, a plate-shaped body having continuous circular holes is used as the belly member 4.

Further, from the end portion of this rectangular frame body 1, only the belly member 4 protrudes, forming a joint piece 5 with another rectangular frame body 1. Further, a mounting member 6 is provided at the center of the rectangular frame 1 in the material axis direction perpendicularly to the upper surface plate 2 and the lower surface plate 3, so that a joining piece 5 of another rectangular frame 1 can be attached. There is. Also,
The four corners of this rectangular frame 1 are relatively cut out, and as shown in the figure, the two rectangular frames 1, 1 are shaped like a T-shape or When joined in a substantially T-shape, the upper and lower plates 2 and 3 can be joined without overlapping.

Note that a method such as bolt joining is used to join the rectangular frames 1, 1 together in this manner.

FIG. 2 shows another example of the rectangular frame 1.
The belly member 5 is formed into a triangular truss shape.

FIGS. 3 and 4 show a T-shaped or approximately A three-dimensional truss is constructed by forming T-shaped truss constituent members, and combining a large number of the T-shaped or approximately T-shaped truss constituent members in a mesh pattern. In addition, a rod material 7 and a support cell material 8 are arranged.

The work to form T-shaped or approximately T-shaped truss components can be done in advance on the ground, which simplifies on-site work, and in particular greatly reduces work at heights, making construction easier. Highly safe.

5a, b to 8a, b show a method of joining the rectangular frame 1 when applied to three-dimensional trusses of various shapes.

5a and 5b show the case where the rectangular frame 1 forming the T-shaped or substantially T-shaped truss component is assembled into a square mesh, and FIGS. 6a and 6b show the case where it is assembled into a diamond-shaped mesh. In the case of forming a diamond-shaped mesh, the ends of the rectangular frame 1 are inclined with respect to the material axis direction, as shown in FIG. 6b. Note that in these embodiments, a plate-shaped mounting piece is used as the mounting member 6.

FIGS. 7a and 7b show a case in which they are assembled in a triangular mesh shape, in which four plate-like mounting pieces are provided as mounting members 6 in the center of one rectangular frame 1, and the rectangular frame 1 The ends of the members are joined. As is clear from FIG. 7a, the two members other than the rectangular frame 1 forming the substantially T-shaped truss component have half the length of the other rectangular frame 1.

Figures 8a and 8b have hexagonal and triangular meshes, which can be joined basically in the same way as the diamond-shaped meshes shown in Figures 6a and 6b.

FIG. 9a shows details of the nodes in the construction method of a space truss according to the present invention, and FIGS. 9b and 9c are a cross-sectional view and a cross-sectional view, respectively. Note that 9 in the figure is a joint plate at a node. Further, as the mounting member 6, angle iron is used.

Moreover, FIGS. 10a and 10b show an embodiment in which a pipe material is used as the bottom material 4.

Note that instead of the upper plate and the lower plate, shaped steel such as an angle, a cut T, a pipe material, etc. can also be used. Figures 10a and 10b show the case of cut T.

The present invention has the above-described configuration, and since the rectangular frames can be joined without using separate joining members, the overall work can be greatly simplified, and the construction period and cost can be reduced. In addition, since the rectangular frame is composed only of the upper and lower plates and the bottom material,
It is easy to process, reduces costs through mass production, simplifies joining work, and can be applied to many types of three-dimensional truss shapes. In particular, since the rectangular frame is assembled in a mesh shape with T-shaped or approximately T-shaped truss components formed in advance, the number of components and joints during work at heights are reduced, which improves construction safety. improves.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a rectangular frame, FIG. 2 is a perspective view showing another example of a rectangular frame, FIGS. 3 and 4 are a plan view showing a part of the overall structure of the space truss, and FIG. Figures 5a to 8b each show the state in which rectangular frames are assembled into meshes of various shapes.
Figures 5a, 6a, 7a, and 8a
5b, 6b, 7b, and 8b are plan views, respectively.
Figure 9a is a plan view showing details of the node, Figure 9b is a sectional view thereof, Figure 9c is a sectional view thereof, Figure 10a is an enlarged view of the main parts of Figures a and 8a. A plan view showing the details of the node when pipe material is used, and FIG. 10b is a sectional view thereof. DESCRIPTION OF SYMBOLS 1... Rectangular frame body, 2... Upper surface plate, 3... Lower surface plate, 4... Belt material, 5... Joining piece, 6... Mounting member,
7... Rod material, 8... Supporting rod material, 9... Joint plate.

Claims (1)

[Scope of Claims] 1. Consists of an upper chord member, a lower chord member, and a hollow belly member, and has a mounting member perpendicular to the upper chord member and the lower chord member at the central portion in the axial direction of the member, and the end portion is attached to the middle member of the belly member. A rectangular frame body having a shape in which a corner portion is cut out and only a joint portion protrudes, and the mounting member is provided with a joint portion of an end portion of a belly member of another rectangular frame body having a similar configuration to the rectangular frame body. Joining them to form a T-shaped or approximately T-shaped truss component, and combining the T-shaped or approximately T-shaped truss component members into a mesh shape using the mounting member and the joint portion. A method for constructing a three-dimensional truss, which is characterized by forming a three-dimensional truss. 2. The construction method of a space truss according to claim 1, wherein the upper chord member and the lower chord member are parallel plates or shaped steel.