JPH0414558A - Lattice structure of steel - Google Patents

Abstract

PURPOSE:To improve productivity by forming a X-member and Y-member from a long C-shaped steel, providing a pair of cut part in the X-member and providing a notch and a cut part in the Y-member so that both the members are engaged with each other. CONSTITUTION:A pair of straight cut parts 21 extending to the point midway in the width of a flange 12 of a long C-shaped steel are formed and through holes 22 are provided in the upper end between both the cut parts 21 to prepare a X-member 2. Next, the web 11 of the C-shaped steel is cut off along its entire width and along its length equal to the width of the X-member and notches 31 extending from the cut part to the point midway in the width of flange 12 are provided to prepare a Y-member 3. Thereafter, a plurality of X-members 2 and Y-members 3 are superposed on one another so that each of the X- members 2 and Y-members 3 intersect with each other at right angles and the cut parts 21 of the X-members are engaged with the notches 31 of the Y-members. As a result, stable production can be performed at low cost.

Description

[Detailed description of the invention] [Industrial application field] This invention relates to steel lattice structures.

[Conventional technology]

Conventionally, a wooden lattice structure has been formed by providing notches at regular intervals to a depth of half the cross section of a wooden square, and interlocking the notches in the orthogonal squares from opposite directions.

[Problem that the invention seeks to solve]

This type of wooden lattice structure has been widely used as building materials such as floor joists, ceiling beams, and shoji screens.

In recent years, this wooden lattice structure has been used less frequently due to the depletion of wood sources, the decrease in high-quality lumber, and the shortage of carpenters. One reason for this is that the demand for incinerator-free buildings has accelerated the decline.

The purpose of this invention is to provide a non-combustible steel lattice structure in line with such social background.

[Means to solve problems]

In order to solve this problem, in this invention, the basic cross-sectional shape is mouth-shaped, so-called C-shaped channel H41)! Form X material and Y material using long materials.

The X material is provided with a pair of linear notches reaching halfway from the edge on both flanges at a predetermined interval.

The web of the Y material is notched at predetermined intervals by the length of the total width of the material X, and cuts are provided from both ends of the notches to reach the middle of the flanges on both sides.

A steel lattice structure is created by overlapping such multiple X materials and multiple Y materials so that they are orthogonal to each other, and interlocking the notches with each other so that the webs of the X materials and Y materials are on the same plane. It forms the

[Effect]

With this structure, a steel lattice structure can be formed by simply providing a notch or notch in a so-called C-shaped channel-shaped steel material, and the problem of non-combustibility and material shortage can be solved.

[Example 1] Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

What is shown in FIG. 1 is a long material 1 made of galvanized steel sheet with a thickness of 1.2 tm and having a cross-sectional shape of .

The width of the web 1) is 25 mm, and the height of the flange 12 is 25 mm.
1m, the total length is about 3m.

Fig. 2 shows an X material 2 formed using the above-mentioned long material.
It is. A pair of linear cuts 21 are provided from the edge of the flange 12, perpendicular to the edge and reaching the middle of the flange.

The distance between the two cuts is 25 mm, which is the same as the width of the web. Such a cut 21 is made 45 over the entire length of the long material.
Provided at cm intervals. Paired linear cuts 2 on X material
1, a through hole 22 is provided at the upper end of the flanges on both sides.

What is shown in FIG. 3 is a Y material 3 similarly formed using the elongated material 1. A 25w rectangular notch with the same length as the web width is formed over the entire width of the web 1), and continuous to this notch, a straight cut is made from both ends to the middle of the flanges 12 on both sides, and a notch with a notch 31 is formed. form. A notch 31 like this is cut 45 over the entire length of the long material.
Provided at cm intervals.

To form a lattice structure using the materials prepared in this way, as shown in FIG. 4, a plurality of three Y materials are placed in parallel at intervals of 450 mm with the webs facing upward. Next, place two or more pieces of X material on top of Y material in a direction perpendicular to Y material,
The notch of the X material and the notch with the notch of the Y material are engaged with each other and firmly pressed down until the upper surfaces of both webs become the same plane. At this stage, on the back side of the web, as shown in FIG.
A long rod-shaped lF gold 23 is inserted so as to reach the back surface of the web of the Y material 3 to complete the steel lattice structure A to prevent the X material and the Y material from coming off.

Normally, the width of the cut is the same as the thickness of the mating steel plate. Also, when cutting out the nib of the Y material, it is best to cut out the thickness of the other steel material and make the insertion part 13 inserted into the X material just large enough to match the inner surface of the X material. It is common. However, as shown in Figure 6, Y
The notch in the material 3 is made thicker by about 5 fins, the cutout is made wider by about 5H, the insertion part 13 is made narrower (and narrower), and an elastic plastic cover 14 is placed over it to separate the X material and the Y material. It is also possible to adopt methods such as configuring the structure to soften the contact between the members when they mesh together, absorb errors in length and width of long materials, and eliminate the sound of steel materials rubbing against each other. .

[Example 2] Based on the steel lattice structure as described in Example 1 above, an example of its usage will be described.

As shown in FIG. 7, the cross-sectional shape of the elongated material 1 is such that the lower end of the flange 12 is bent inwardly and upwardly to form a lip 15 for reinforcement. The web 1) is provided with a large number of concavities and convexities 16 parallel to the minor axis direction as shown in FIG. A narrow gap 17 is provided at the bottom of this recess.

As shown in FIG. 9, an operating hole 24 is provided in the center of the web 1) of the X material 2 where it intersects with the Y material.

As shown in FIG. 10, a short leg notch 32 is provided in the flange 12 of the Y member 3 at a point where it intersects with the X member, perpendicularly upward from the edge of the flange 12.

Using such materials X and Y, a steel lattice structure is constructed by the method described in Example 1.

On the other hand, 1) Prepare the legs 4 as shown in FIG. The legs are formed by bending a galvanized steel plate with a thickness of 2.3 fl. A nut 41 is attached to the center of a board 40 in the shape of a rectangle, and a bolt 42 is fitted to the nut. At the top of the bolt, make a hole for the tip of a Phillips screwdriver. Groove-shaped cuts 44 are provided on the vertical surfaces 43 on both sides of the substrate, extending downward from the upper edge.

An example of a method for constructing a subfloor using a constituent lattice structure and legs will be explained. As shown in FIG. 12, after the steel lattice JR structure is formed, the groove-shaped notches 44 of the legs 4 are engaged with the respective leg notches 32 provided at the lower edge C of the Y material. Of X material. Insert the tip of a screwdriver through the operating hole in the web into the hole at the top of the bolt and rotate the bolt to adjust the height and level the entire steel lattice structure. Lay the plywood 5 on the web 1) of X material and Y material, and screw 6t.
h to form the subfloor. Since the screw passes through the gap 17 provided in the web, the fastening work is easy.

If the basic shape of the elongated material used in this invention is a type, in addition to the above embodiment, a horizontal supporting edge 18 may be provided below the flange 12, as shown in FIG. It may also be an attached item. In this case, the flat plate is made of X material and Y material.
It is also possible to drop it into a "masu-1" surrounded by timber and erect it on the support edge.

Further, the structural lattice structure of the present invention is not limited to the above embodiments, and can be used, for example, as a ceiling base, a double floor base for wiring, etc.

Furthermore, the mounting is not limited to the examples with metal fittings, etc.
For example, there is a method of fitting the Nando into a three-dimensional space surrounded by four flanges created on the back side of the intersection of the X material and the Y material.

[Effects] Since the present invention is configured as described above, it has the following features.

■Two parallel flanges interlock at right angles, so
-Unlike when two plates intersect, they can interlock very firmly.

■It is nonflammable because it is made of steel.

■Since the steel plate is bent, the rib structure is utilized. Therefore, a lightweight and strong product can be obtained.

■Since it is made of steel, there is no problem of uneven material as with wood.

■Since it is made of H4, there is no distortion due to differences in dryness and humidity like with wood.

■Pre-notch or post-notch roll forming machines allow for mass production by machine, and stable supply at low cost.

■Continuous production is possible, making it possible to obtain long items that are difficult to obtain with wood.

■Since it is machine produced, 1) Stable production can be achieved even without thI training workers, eliminating labor shortages.

■Can cover the shortage of wood materials.

[Brief explanation of drawings]

Figure 1 is a perspective view showing the basic shape of a long material, Figure 2 is a
FIG. 3 is a perspective view showing an example of Y material, FIG. 4 is a plan view of a steel lattice joist, and FIG. 5 is the interlocking part of X material and Y material. , and FIG. 6 is a perspective view showing an example of the insertion part of the Y material (partially with the cover cut away). FIGS. 7 and 13 are front cross-sections showing an example of the long material. Figure 8 is a side sectional view showing an example of a long material, and Figure 9 is a side sectional view showing an example of a long material.
Fig. 10 is a side view showing an example of Y material, Fig. 1) is a perspective view showing an example of legs, Fig. 12 shows how steel lattice joists are used. It is a side view which shows an example. Kiyo Yamamoto, Representative of Applied Planning, Patent Author Co., Ltd. 6 Figure A 5 Figure 11) Figure

Claims (4)

[Claims] (1) A pair of linear cuts reaching halfway from the edge of the flange are made at the same position on both sides of a long steel material with a basic cross-sectional shape of ■ at a predetermined interval. Form the X material, cut out the web at multiple locations at predetermined intervals at predetermined intervals in a long steel material with a basic cross-sectional shape of ■ shape, and cut out the entire width of the web by approximately the same length as the width of the X material, and cut both ends of the notches. A straight notch reaching the middle of the flange and a continuous notch are formed to form the Y material, and multiple X materials parallel to each other and multiple Y materials parallel to each other are formed.
the Y material so that it is perpendicular to the
A steel lattice structure in which the notches of both flanges are meshed together so that the cut surfaces of the materials are aligned and the web surfaces of the X and Y materials form the same plane. (2) A through hole is provided at the upper end of the flanges on both sides between the pair of linear cuts in the Claim (1) wherein a rod-shaped clasp longer than the web of the Y material is inserted through the web to reach the back surface of the web of the Y material to prevent the X material and the Y material from coming off.
1) Steel lattice structure as described. (3) The steel lattice structure according to claims (1) and (2), wherein all or part of the long steel member is folded along the edge of the flange. (4) Claim (1), wherein all or part of the long steel material is provided with a large number of striped irregularities in the direction of the short axis of the web, and a gap is provided at the bottom of the recess. ~ (3) Steel lattice structure described.