JPH0240091Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a piece that enables plane crossing of struts used as supports for piles.

[Prior art] In the horizontal strut construction method, in which struts are erected in a lattice pattern between facing timbers for pile-stopping work,
As shown in FIG. 6, vertical struts 12 and horizontal struts 13 are stacked vertically and hardware 14 is placed at each intersection.
It is held between U-bolts 15 attached to and supported by brackets 17 fixed to shelf piles 16.
However, as is clear from the diagram, in this conventional construction method, the upper and lower struts intersect at grade level, so
The height occupied by the strut increases. Therefore, a work platform installed on the strut not only has the disadvantage that the slope of the entrance slope becomes steep, but also requires an extra space between the strut and the slab of the structure. Moreover, as is well known, it is difficult to obtain land these days, so building sites are rarely rectangular and often include a hypotenuse. It took a lot of time to install, as it required double-mounting the upper and lower braces, and it had drawbacks that the parts did not fit well.

To improve such conventional drawbacks, for example, as seen in Japanese Utility Model Publication No. 12041/1983, at the intersection of a longitudinal strut and a transverse strut, one strut is connected to the other. As seen in Japanese Patent Publication No. 11014/1983, a device was proposed in which vertical and horizontal struts could be erected at the same height by inserting a connector with a box-shaped hollow part that could be penetrated through the struts. To,
It is known that a special piece consisting of a polyhedron having a number of receiving surfaces that come into contact with a number of struts and tips of flints on the same horizontal plane is known.

However, in the former case, since the connector is formed into a rectangular tube shape, it is not only difficult to manufacture, but it is also heavy and difficult to reinforce, and the bolts that secure the struts will bend due to their own weight. There is. On the other hand, in the latter case, since the intersecting struts were fixed together, there was an inconvenience that if a load was applied to one strut during pre-testing, the other strut would become deformed, such as meandering. .

[Purpose of the invention] The present invention aims to propose a piece that can eliminate all of the above-mentioned conventional problems and allows plane crossing of strut members. In other words, the present invention not only has a simple structure and is lightweight, but also has excellent axial force transmission and bending stress, allows the strut members to move when preload is applied, and also makes it easy to fix intersections. The purpose of this invention is to provide a piece for plane cross struts that can be used.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention cuts out the web and the upper flange at the middle part or the end part in the longitudinal direction of the H-section steel body to be wider than the flange width, A seat plate is fixed to the bottom of the notch parallel to the flange.

[Examples] The present invention will now be specifically explained based on illustrated embodiments. In the piece for plane crossing struts according to this invention, the main body 1 is formed of short or long H-beam steel, as shown in FIG. 1 as an example. Main body 1
The web 2 and the upper flange 3a are cut out at the middle part in the longitudinal direction to be wider than the flange width l, and a seat plate 4 is placed on the bottom of the cutout parallel to the flange.
are fixed together by welding. Upper flange 3a
The end of the seat plate 4 is connected to a pair of vertical connecting plates 5, 5.
These connecting plates are fixed by welding to the notched portion of the web. Mounting face plates 6, 6 for attaching the struts are fixed to both ends of the main body 1, and a large number of bolt holes 7 are provided in the mounting face plates 6, 6 and the upper and lower flanges 3a, 3b, respectively. Reference numeral 8 is a triangular rib plate fixed between the notched flange end and the seat plate. Although this rib plate 8 is not essential to the present invention, it can be used when it is necessary to increase axial force transmission. It is preferable to keep it attached.

By the way, as mentioned above, the above piece has the web 2 and the upper flange 3 in the middle part in the longitudinal direction of the main body.
It is required that the notch a be wider than the flange width. However, the width of the notch is equal to the width of the flange.
In this case, it is preferable to keep l+100 mm or more.

Next, to explain how to use the present invention, the pieces of the present invention are used in combination at the intersection of a longitudinal strut and a transverse strut, as shown in Fig. 3. That is, the ends of the longitudinal strut main members 9, 9 are fixed with bolts and nuts to the mounting face plates 6, 6 at both ends of the piece 10a as shown in the figure, and a piece 10b of the same type is placed on the piece 10a so as to be substantially perpendicular to it. Then, the notch part of the upper piece and the notch part of the lower piece are brought into engagement and contact with each other. In this case, since the abutment surfaces of the upper and lower pieces form a joint surface in the shape of a notch, the two pieces are set at the same height, as clearly shown in FIG. Therefore, by fixing the ends of the horizontal strut main members 11 to the mounting face plates 6, 6 at both ends of the cross strut piece 10b with bolts and nuts, the vertical and horizontal strut members can be erected at the same height. can.

As already mentioned, the width of the notch in the piece in this invention is wider than the width of the flange, and the length of the connecting beam main material can be adjusted freely using length adjustment pieces and jacks. Since it can be adjusted, the intersecting position of the pieces can be freely set depending on the combination. In addition, the pieces of the present invention used in combination as described above have face-to-face joints with the struts in both the vertical and horizontal directions, and
Since the cross-sectional loss is only in a part of the web, and the effective cross-sectional loss rate is extremely low, the load transmission of axial force can be carried out without difficulty, and it also has sufficient resistance against lateral eccentricity of the strut material. However, if a preload is applied, the lateral movement of the strut members is guaranteed, which has an epoch-making effect in that preload construction is possible in a planar cross strut frame structure.

In addition, when restraining the intersection of the upper and lower pieces,
Fasten with a band or bolt/nut (not shown).

FIG. 4 shows a modification of the present invention, in which the piece body can be divided into two parts along a line perpendicular to the longitudinal direction of the piece body. That is, in this embodiment, the piece main body is formed from a pair of left-right symmetrical constituent pieces 1a, 1a at the notch, and this pair of constituent pieces is vertically inserted between the seat plate 4 and the lower flange 3b. The plate 12 allows for bolt connection. Incidentally, reference numeral 13 indicates bolt holes, which are provided in the seat plate 4, the connecting plate 5, and the joint plate 12. Bolt holes provided in the upper and lower flanges 3a, 3a and the mounting face plate 6 are not shown, but are drilled in the same manner as in the example shown in FIG. FIG. 5 shows a state in which the vertical and horizontal struts 9 and 11 are constructed at the same height using the pieces described above.

[Effects of the invention] As explained in detail above, according to the piece of the invention, plane crossing of strut members is possible, the structure of the piece itself is extremely simple and lightweight, and there is no loss in the upper section. It is extremely useful as it can withstand a small but large axial load and bending load, has an excellent load transmission effect, and can perform preloading operations without any inconvenience.

[Brief explanation of drawings]

Figure 1 is a perspective view showing an embodiment of the invented piece, Figure 2 is a vertical cross-sectional view of the same piece, Figure 3 is a perspective view of a strut connection using the same piece, and Figure 4 is the invented piece. FIG. 5 is a perspective view of a strut joint using the same piece as above, and FIG. 6 is a perspective view of a conventional strut joint. 1... Main body, 2... Web, 3a... Upper flange, 3b... Lower flange, 4... Stool plate, 5
... Connecting plate, 6 ... Mounting face plate, 7, 13 ... Bolt hole, 8 ... Rib plate, 9, 11 ... Main material of strut.

Claims (1)

[Claims for Utility Model Registration] 1. The web and upper flange at the middle or end in the longitudinal direction of the H-shaped steel body are notched wider than the flange width, and a seat plate is fixed to the bottom of the notch parallel to the flange. A piece for plane cross struts. 2. The piece for a plane cross strut according to claim 1, wherein the main body is formed so that it can be divided into two along a line perpendicular to the longitudinal direction of the main body.