JPH023856B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to flint material for securing piles used when constructing underground structures of reinforced steel buildings, and in particular, to simplify assembly work on site and at the same time to provide convenience during transportation. This relates to a so-called prefabricated flint, which is constructed entirely in two pieces.

As is well known, when carrying out mountain protection work, flint is generally used to prevent the surrounding ground from collapsing, although it depends on the scale of the root cutting. The use of flint increases its usefulness as it allows for a wider strut span or bending span. This effect becomes more pronounced as the size of the flint increases, but the current situation is that as the flint increases in size, it cannot be transported to or from the site as described later.

This point will be explained in detail below.

As shown in Fig. 1, the commonly used flint timbers are constructed by placing uprights 2, 2 on the inside of a sheet pile 1 that has been driven into the site, and then cutting beams at right angles to the uprights. 3 is a latticework mountain stopper frame, which is assembled in a planar triangular shape for the purpose of reinforcement at the intersection of the upright and the strut, and the main wood material 4, which is a single material, is also made from a single material. Uke pieces 5 and 6 as
Fasten using bolts and nuts through
The corresponding surfaces of the sills 2 and struts 3 were also constructed using bolt stitching.

In this way, conventional flint materials are used by assembling the main material and supporting pieces each time by tightening bolts, which not only requires a lot of time and effort to install and remove. However, there were also problems in ensuring accurate connections. In view of this point, recently Jikoko 54-
As seen in Publication No. 25285, a trapezoidal flint piece 7 is assembled in advance as a part, and
A method has been proposed in which the piece is directly fitted and fixed in the area where flinting is required, without assembling the pieces each time on site (see Figures 2 and 3).

However, this method also has the following drawbacks, and a solution has been sought. In other words, the piece shown in the same figure has no choice but to be sublime because the flint piece itself is welded into a trapezoidal shape as a completed product, and as a practical matter, there is a limit to the size as well. However, it was not always possible to provide flint pieces that met the design specifications. Looking at the current situation, it is necessary to use a truck to transport the above-mentioned flint pieces to a construction site, etc., but in that case, there are restrictions of a width of 2.5 m or less and a height of 4 m (including the height of the truck bed). Because of this, there was a drawback that it was practically impossible to transport unless the flint pieces were sized to fit within that range. Therefore, in terms of design specifications, it is virtually impossible to provide large flint pieces for use in locations where the strut span exceeds 6 m, for example.

The present invention aims to provide a new flint material that can solve the above-mentioned difficulties, and has a new structure for flint material, which is indispensable in relatively large-scale pile-damping construction work, and is particularly suitable for use on site. The lumber is characterized in that the entire flint material is divided into two pieces that can be moved in and out for convenient installation and removal as well as transportation to and from the site.

The present invention will now be described in detail with reference to the illustrated embodiments. In FIG. 4, reference numeral A indicates an inner piece constituting the flint material of the present invention, and reference numeral B indicates an outer piece. However, the inner piece A is the center material 1
0a and flint branches 11 placed on both its left and right sides
a, 11a, while the outer piece B consists of a middle support material 10b corresponding to the central material 10a, flint materials 11b, 11b located on both the left and right wings of the center material 10a, and a connecting plate 12 that connects these support materials to each other. and a connecting plate 13 for raising the top, and each part of the central member, branch members, and receiving member may be all made of H-beam steel.

In addition, the members indicated by reference numerals 14 and 15 are reinforcing plates, while the member indicated by reference numeral 16 is a seat fitting.
7 is a hanging metal fitting (see Figs. 6 to 8). Further, end plates 18 and 19 are attached to each end face of the flint branch material and center material, respectively.

The flint material of the present invention has the above-mentioned configuration, and is operated as follows when used. As shown in FIG. 4, the outer piece B is
is hoisted by a crane or the like and brought into contact with the inside of the vent 2, and then fastened to the vent with bolts and nuts. Next, the connecting plate 12 in the outer piece B
Place the inner piece A on the outside of the
Both are tightened with bolts and nuts through bolt holes 20 previously drilled in the end plates 18 and 19. In this way, the outer piece and the inner piece are connected together to form one completed flint piece, and when the strut 3 is fixed to this piece as shown, it becomes a mountain stop frame. This means that a fire pit has been erected. As described above, according to the present invention, it is possible to save the effort of attaching a receiving piece etc. to a single piece of flint each time to complete the work as in the past, and it is possible to simply connect two members separated into an outer piece and an inner piece. As a result, the number of assembly steps is significantly reduced compared to the conventional method. Furthermore, since it is made of two members, each piece is formed relatively small, and as a result, there is an advantage that it can be transported by truck without being restricted by height restrictions etc. if it is in a separated state.

However, as shown in FIGS. 9A to 9C,
It is also possible to make the inner piece A have the same size for all pieces, and to gradually increase the size of only the outer pieces as shown by the symbols B ₁ to B _3. In this case, standardization of the inner piece A can be achieved. This makes it even more advantageous. However, the present invention does not require the standardization of the inner piece A, but is characterized in that both the inner and outer pieces are constructed of flint as a finished product so that they can be freely moved toward and away from each other.

In addition, in the present invention, when removing the flint material once installed, the operation may be performed in the reverse direction of the installation process.

As explained in detail above, since the flint material of the present invention is constructed entirely of both the inner and outer pieces, the flint material can be prefabricated to any size according to the design specifications of the strut span, and can be adapted to suit the needs of the site. It has a great practical effect in that it can be supplied freely and there are no restrictions on its size when carrying it in or out.

[Brief explanation of drawings]

Figures 1 to 3 are perspective views for explaining the conventional type of flint for securing piles, Figure 4 is a plan view of the flint of the present invention, and Figure 5 is an assembled completed view of the flint of the present invention. 6
7 is a sectional view of the hanging fitting, FIG. 8 is a front view thereof, and FIGS. 9A to 9C are plan views showing another embodiment of the present invention in an assembled state. 10a, 10b: Center material, 11a, 11b: Branch material for flint, 12: Linking board, 13: Linking board for raising the belly, 14, 15: Reinforcement board, 16: Stool fitting, 1
7: Hanging fixture, 18, 19: End plate.

Claims (1)

[Scope of Claims] 1. An inner piece is constituted by a central material and flint branches attached to both sides thereof, and an interlocking plate is used to connect the intermediate support material corresponding to the central material and the flint support materials located on both wings thereof. Furthermore, an outer piece formed by connecting a connecting plate for raising the heel can be connected to the inner piece so as to be able to come into contact with and be separated from the inner piece. 2. The flint material for locking a pile according to claim 1, wherein the inner piece has constant dimensions, and only the outer piece has different dimensions, so that these outer pieces and the inner piece can be freely brought into contact with and separated from each other.