JPS5847082Y2 - Firework pieces for civil engineering and construction - Google Patents

Description

[Detailed description of the invention] The present invention relates to a flint piece for a retaining frame for civil engineering and construction, and it is capable of easily and quickly erecting and dismantling a retaining frame structure, shortening the construction period and reducing construction costs. Of course, the main purpose is that it is easy to attach soil pressure gauges, preload jacks, etc., and that there is less buckling due to axial force and that stress is transmitted evenly.

In conventional mountain retaining work, it is common to connect the target member and the strut to each other in a perpendicular state, and then erect two flint pieces across the target member from both sides of the strut. It took a lot of work to connect them together, and it was impossible to ensure accurate connections.

Therefore, for example, there is a so-called trapezoidal flint piece as disclosed in Japanese Utility Model Application Publication No. 52-66303, and although it has certain advantages, the proposed piece is not suitable for use with preload jacks and soil pressure gauges that are essential for mountain retaining work. Furthermore, when joining the flint piece and strut member, there was no consideration given to the attachment of the cover plate, and buckling was likely to occur due to the strong axial force. There is a problem with this.

This invention was devised in view of the above circumstances, and is as follows:
Examples will be described in detail with reference to the drawings.

゛Figures 1 and 2 show two examples of erected structures for mountain retaining work using the flint piece 1 of the present invention, where A is the work piece and B is the strut.
In Fig. 1, the material A crosses on the same plane, and in this case, a trapezoidal corner piece C is used, and each slope of the trapezoidal piece is used as the material A.
In addition, in the example shown in Fig. 2, the material A is of a type that crosses in a stepwise manner.
At this time, each material A is joined by a corner piece D, and a piece E is installed at the opposite corner of the material A.

Although the flint piece 1 of the present invention can be adopted in addition to the above two examples, the flint piece 1 is constructed as shown in FIG. 3 and subsequent figures.

In Figures 3 to 6, 2 is a steel mounting plate;
It has a width and a length of 1, and has a large number of bolt insertion holes 3.

A steel member 4 for connecting the strut is welded at right angles to the longitudinal center of this mounting face plate 2 to form a T-shape.
In the example, H-shaped steel is shown, and the reason is that the mounting face plate 2
is the same as the width of

In this embodiment, three triangular steel reinforcing plates 5 are welded to each of the joining corners of the mounting face plate 2 and the connecting steel material 4 at intervals in the width direction of the mounting face plate 2, and the connecting The steel material 4 for use is also welded and joined, and the joint end of the steel material 4 is located at the longitudinally intermediate portion of the steel material 4, so that the steel material 4 has a cover plate mounting portion 4A for a hydraulic jack, earth pressure gauge, etc.

In this embodiment, the upper and lower reinforcing plates 5 are joined to the flanges of the steel material 4, but the middle reinforcing plate h5 is joined to the web of the steel material 4, and the middle plate 5 is here as shown by the reference numeral in FIG. By extending, the base metal cross-sectional weld length is increased and stress concentration is prevented.

Furthermore, a reinforcing rod 6 is connected and fixed between the reinforcing plates 5,
In addition to reinforcing the plates each other, the rod 6 allows the flint piece 1 to be lifted up and hung with a hook or the like for transportation, loading and unloading.

In addition, an end plate 7 is welded to the connecting steel 4, and holes 7A for attaching bolt holes for connecting the struts, an earth pressure gauge, and a preload jack (hydraulic, Kirin jack) are opened in the face plate 7. A reinforcing plate 8 is welded to the steel web 7 and the steel web.

Further, bolt insertion holes 9 for temporarily attaching metal fittings are provided in the upper and lower flanges of the joint portion of the steel material 4 with the mounting face plate 2, and the reinforcing play 1-5 at this joint portion is provided with the mounting face plate 2. For the convenience of bolt joining to the material A during the process, a facing hole 10 is provided that is large enough to allow one's hand to enter, and this facing hole 10 may not be provided as shown in FIG. 31.

Other than that, 11 is 1 to cover plate or connected play 1
1 is a hole for attaching 2, 13 indicates a bracket, and 14 indicates a panel.

According to the above-described embodiment of the present invention, as shown in FIGS.
3 to attach the mounting face plate 2 of the proposed piece 1, and fit a stiffener to the processed material A to connect the flange of the processed material A and the mounting face plate 2 via bolts not shown. At that time, the part I to operation at the joint between the mounting face plate 2 and the steel material 4 can be easily performed through the facing hole 10, and the remaining part can be performed from the gap between the reinforcing plates 5. Yes, because it can be implemented.

Through the flint piece 1, an axial force capable of withstanding the strong tonosho is applied to the material A using a jack or the like.
A jack or the like is interposed between the mounting face plate 2 and the cover plate to apply a strong axial force. Moreover, there is no buckling due to axial force.

In this manner, in a state in which an axial force capable of withstanding earth pressure is applied, the end plate 7 and the strut B are connected at holes I-- (not shown), and both are joined by the connection plate 12.

As described above, in the present invention, the steel member 4 for connecting the strut is joined at right angles to the longitudinal center portion of the steel mounting face plate 2 having the width and length to form a T-shape. A plurality of reinforcing plates 5 are joined to each of the joint corners of the connecting steel material 4 at intervals in the width direction of the mounting plate 2, and the connecting steel material 4 of the reinforcing plate 5 (: the related joint end Since it is related to a flint piece for a mountain retainer for civil engineering and construction, which is located in the longitudinally intermediate portion of the steel material 4 and is characterized in that the attachment portion 4A is provided on the steel material 4, it has the following advantages.

The mounting face plate 2 and the steel member 4 for connecting the struts are joined in a T-shape, and the reinforcing plate 5 is provided across the opposing corners of both, so that the axial force acting through the steel member 4 is distributed evenly over the entire mounting face plate 2. It has the advantage that it is possible to transmit the action to the ground, and there is no risk of buckling.

In addition, the joining free end of the reinforcing plate 5 ends at a midpoint in the longitudinal direction of the steel material 4, and the steel material 4 is provided with mounting portions 4A for struts, jacks, soil pressure gauges, etc. In particular, since the cover plate of an earth pressure gauge is long, the presence of the mounting portion 4A is advantageous.

Furthermore, since the reinforcing plates 5 are joined at intervals, there is no problem in the process of attaching the mounting face plate 2 to the material A, and the structure as a whole is simple, easy to manufacture, and inexpensive. It is possible to provide such services, and it is also possible to shorten the royal period.

In this embodiment, the steel material 4 is an H-shaped steel, but it may be a box-shaped cross section or an angle steel, and the reinforcing plate 5 is triangular, but it may be fan-shaped.

[Brief explanation of the drawing]

Figures 1 and 2 are plan views of two examples of frame structures for pile fixing work using the present invention, Figures 3 1 and 2 are perspective views showing two examples of the piece of the present invention, Figure 4 is a plan view of the same, and Figure 5 6 is a front view of the same, FIG. 6 is a rear view of the same, FIG. 7 is a detailed plan view of an example of use, and FIG. 8 is an elevational view of the same. 2... Mounting face plate, 4... Steel material for strut connection, 5... Reinforcement plate, 4A... Mounting part.

Claims (1)

[Scope of utility model registration request] A steel member 4 for connecting the struts is joined at right angles to the longitudinal center of the steel mounting face plate 2 having a width and length of 2 to form a T shape. A plurality of reinforcing plates 5 are joined to each of them at intervals in the width direction of the mounting face plate 2, and the joining end of the reinforcing plate 5 with respect to the connecting steel material 4 is located at a longitudinally intermediate portion of the connecting steel material 4. A flint piece for a mountain retainer for civil engineering and construction, characterized in that the steel material 4 is provided with a mounting portion 4A.