JPS63147014A - Back-filling piece for sheathing - Google Patents

Abstract

PURPOSE:To permit back-filling operation to be performed simply by a method in which a driving piece and a receiving piece are used in a mutually facing manner. CONSTITUTION:A driving piece 30 having a slide face with an arc-shaped projected surface 31 and through holes 35 and a receiving piece 10 having a slide face with an arc-shaped recessed surface 12 and a hanging supporter are set between sheathing material 1 and waling material 2 in a mutually facing manner. Since the pieces 30 and 10 can be set on any position of the waling material 2, the back-filling operation can be easily performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a backfill piece that is used by being interposed between a retaining wall and a raised wall in retaining work.

[Conventional technology] In mountain retaining construction, earth retaining materials (steel sheet piles, H-shaped steel, etc.) are generally placed in order to prevent collapse of excavated walls, and then the earth retaining materials are raised up, strut beams, and flints are installed. It is supported using main members such as That is, as shown in Fig. 12, a raised wall 2 is attached horizontally to the inside of the earth retaining wall 1 that has been driven into the construction site, and then a strut 3 is erected at right angles to this raised wall. ing.

The butt portions of the backrest and the struts are tightened by bolting or welding, and flint materials 4 are attached to the corners of the backrest and the intersections of the backrest and the struts to secure the piles. It forms a frame. In this case, do it! The gap between 1 and the backing 2 is conventionally backfilled with backfilling material 5 such as concrete so that the fulcrum reaction force of the earth retaining wall is applied as a uniformly distributed load to the backing. The structure is constructed so that an average axial force is applied to the struts via the backrest.

When performing the above-mentioned backfilling work, there is no problem if the facing surfaces of the earth retaining wall and the restoring wall are correctly parallel, but in reality, when driving steel sheet piles etc. into the ground, there may be problems due to earth pressure or underground obstructions. The driving direction of the steel sheet pile may be misaligned due to objects, hardness or softness of the ground, or other factors.
In many cases, the facing surfaces of the retaining wall and the backing are not parallel.

In other words, the earth retaining wall 1 is built with an angular deviation in the horizontal direction relative to the restoring wall 2 (Fig. 13), and the earth retaining wall is also built at an angle in the vertical direction. Sometimes (Figure 14). As a result, the outer surface of the backfilling material 5 and the retaining wall 1 or the backing may come into contact with each other unevenly, or only a small portion of the area may come into contact with each other, reducing the effectiveness of the backfilling and causing the excavated wall surface to become uneven. This may cause the structure to collapse or damage the component. Therefore, as described above, there has been a long-awaited development of a backfilling material that can be brought into close contact with an earth retaining wall and a backing even if the facing surfaces of the wall and the backing are not parallel.

[Summary of the Invention] The present inventor previously proposed the following backfilling tool for heel retaining, as an invention in Japanese Patent Application No. 149718/1983, for the purpose of overcoming the drawbacks of the above-mentioned conventional method. In other words, the wedge device is composed of a driving tipter and a gap adjustment unit that are combined with each other to form a wedge device, and the tipter and the adjusting unit each have a sloped surface facing each other, and the inner slope can be slid in the driving direction of the wedge. The adjusting unit is provided with an arc-shaped recess having an arc-shaped cross section in a direction perpendicular to the driving direction at a position opposite to the slope, and the arc-shaped recess has a A camber member having a half-moon cross section is rotatably fitted around the arcuate center of the four arcuate parts, and the camber member is held by guide members fixed to the upper and lower ends of the four arcuate parts. This invention relates to a locking tool for staking that is movable only in a direction perpendicular to the direction of driving the bolt. The present invention is intended to improve this prior invention and propose a more user-friendly Yamadome backfill piece.

[Problems to be Solved by the Invention] In other words, the back-filling tool for retaining in the prior invention is superior to the driving-in cotter! The clearance adjustment unit has a camber rotatably incorporated therein, and the camber is assembled to the adjustment unit body in such a way that it cannot be separated. Therefore, the structure is relatively complicated and processing and manufacturing is labor-intensive, and furthermore, the rotation angle of the camber cannot be increased. In addition, since such backfilling tools require strength, they are conventionally made of steel, and each set has approximately 15 to 2,089 heavy loads, so it is difficult to carry and install them manually at high places such as when lifting. Moreover, since the dismantling and recovery work was not made of light silicon, the work involved great effort and danger, and there was a limit to how much work efficiency could be improved.

SUMMARY OF THE INVENTION An object of the present invention is to provide a backfill piece capable of solving the above-mentioned problems.

That is, the mountain backfilling piece according to the present invention has a simple structure consisting of a fixed amount piece and a driving piece, and the slope rotation angle range of the driving piece is widened. It provides a backfill piece for fastening.

Means for Solving Problem L] In order to achieve the above object, the inventor of the present invention, as a result of various studies, discovered that in a backfilling piece consisting of two members, a fixed amount piece and a driving piece, one side of the driving piece is shaped like an arc. A sloped surface having a convex surface is formed, and the opposing receiving surface of the fixed amount piece that the piece is in close contact with is formed into a concave shape into which the arcuate convex surface fits,
It has been found that a backfilling piece that can solve the above problems can be obtained by providing a hanging support member that can be connected to the upper end of the earth retaining material on the upper part of the fixed amount piece. In the present invention, by forming at least one of the fixed receiving piece and the driving piece from a lightweight material such as die casting, aluminum casting, or plastic material, a pumice backfilling piece with a pressure ffl of 173 or less than the conventional one can be obtained. It is.

[Examples] The present invention will be specifically explained based on illustrated examples. What is shown in FIG. 1 is a backfilling piece according to the present invention, and this piece consists of a fixed receiving piece designated by the reference numeral 10 and a driving piece designated by the reference numeral 30, each of which is made of die casting, aluminum casting, polyamide resin (nylon), etc. It is made of molded plastic, etc., and when used, the two pieces are overlapped.

First, the structure of the fixed receiving piece 10 will be explained in detail with reference to FIGS. 2 to 4. In the figures, reference numeral 11 denotes a wedge-shaped opposing plate that is brought into close contact with the driving plate 20.

As shown in the figure, the thickness of the facing plate 11 gradually increases from the upper end to the lower end, and the front surface side is sloped, and the sloped surface is curved in a cross section perpendicular to the longitudinal direction toward the back side of the facing plate. By doing so, the inclined concave surface portion 12 is formed. Further, on both left and right sides of the opposing plate 11, stepped portions 13 are provided.
a, 13b provided on the bottom surface of the ears for adjusting the width 14.14
are integrally formed, and vertical bolt through holes 15 are provided near both ends of this ear portion 14. 16 is the bolt hole 1
5, a pair of suspension bolts inserted into the lower end of the bolt.

The lower end piece 17 that can engage with the stepped portion 13a or 13b is L.
It sticks to form a shape or an inverted shape. Further, reference numeral 18 denotes a hanging support member disposed above the hanging bolt 16 so as to intersect therewith. This support material has a through hole 19 at one end thereof to allow the bolt 16 to be loosely inserted therein, and the upper part of the bolt 16 is inserted into this hole to connect the support material 18 so as to be rotatable around the hanging bolt 16. Moreover, it is configured to be movable in the vertical direction along the bolt. Note that 20 is a retaining nut screwed onto the upper end of the bolt 16, and 21 is a buffer spring interposed between the nut and the support member 18. Reference numeral 22 denotes a handle, which is jointed to the upper part of the pair of hanging bolts 16 via connecting rings 23 formed at both ends.

Next, the structure of the driving piece 30 will be explained with reference to FIGS. 1, 5, and 6. As can be clearly seen from the perspective view of FIG. 1, the driving piece 30 is constituted by a patterned member whose thickness gradually decreases from the upper end to the lower end.

That is, this wedge-shaped driving piece 30 has a surface facing the fixed receiving piece 10 that is sloped, and the longitudinal center of the slope is curved to a middle height to form an arc-shaped convex surface portion 31 . The opposite side has a smooth flat surface 32, and a handle 33 is integrally extended from the top of the driving piece to form a hand hole 34 therein. Incidentally, a plurality of insertion holes 35 for bale removal tools are formed in the lower part of the handle part and the slope part of the driving piece.

The backfilling piece of the present invention is composed of two members, the fixed receiving piece 10 and the driving piece 30, which are configured as described above, and when backfilling work is performed during mountain retaining work, the above-mentioned two pieces are assembled as described below. use it. In addition, in mountain retaining work, the fixed receiving piece 10 of the present invention is placed at the backfilling position between the earth retaining wall 1 and the restoration wall 2, and the hanging support member, that is, the hanging bolt 16 and the support 1 provided on the top thereof, is used.
8, and is hooked onto 2 as shown in FIG. 7 or 8 to hold it so that it does not fall. in this case,
Since different sizes of H-shaped steels are used for restoring depending on the load of the retaining structure, the flange lengths of the H-shaped steels are also different for the resized pieces.

Therefore, for a sharpener with a large flange length of type 1 steel, the height can be adjusted by changing the supporting position of the lower end piece 17 of the hanging bolt 16 from the step 13a on the lower surface of the ear to the step 13b. The distance between the hanging support 18 and the top surface of the opposing plate 11 is adjusted. Then, as shown in FIG. 7, the flange surface of the restoring member 2 is brought into close contact with the back surface of the fixed receiver piece 10, and depending on the situation, an appropriate number of backfill liners 40 are superimposed on the back surface of the fixed receiver piece 10. After this (see Fig. 10), the inclined concave portion 1 of the foot rest piece 10 is
2 so that the arcuate convex surface portion 31 of the driving piece 30 fits into it. At that time, if the horizontally opposing surfaces of the restoring member 2 and the earth retaining material 1 are not parallel but are inclined (see FIG. 9), the driving piece 30 is As shown in FIG. 0, it is rotated horizontally and shifted to one side to absorb the angular deviation in the horizontal direction.

When the degree of inclination is large, an inclined liner 41 is inserted to eliminate the gap between the horizontally opposing surfaces, as shown in FIG. Then, the backfill piece of the present invention is press-fitted between the earth retaining material 1 and the backfill 2, and is fixed so as not to reduce the axial stress of the strut.

In carrying out the present invention, it is usually not necessary to adjust the angular deviation between the vertically opposing surfaces of the earth retaining material and the restoring material. The reason is that the accuracy including 1ffi of earth retaining material 1 is usually 1
Even if the movement R of the earth retaining material due to excavation is considered, the slope ratio is within 1150 even under the worst conditions. Therefore, the width of the gap between the vertically opposing surfaces of the upright and earth retaining material is a very small value of at most about 4n+m per 200mm of height (see Figure 14). Furthermore, considering the presence of earth and sand that adheres to the earth retaining material, by simply driving the driving piece 30 of this backfilling tool, the back side of the piece will come into close contact with the earth retaining material without any gaps, and therefore, as described above. As such, there is no need for vertical angle adjustment.

[Effects of the Invention] As detailed above, the backfilling piece of the present invention is composed of a combination of two members, a fixed receiving piece and a driving piece, and one side of the driving piece is an inclined surface having an arcuate convex surface. This is because the opposing receiving surface of the fixed receiving piece in which the pieces come into close contact is a concave part into which the arcuate convex surface fits, and a hanging support member that can be linked to the upper end of the earth retaining material is provided on the upper part of the fixed receiving piece. , installation work can be carried out safely on site during backfill construction. In particular, in case of II, the fixed amount piece side is hooked to the earth retaining material via a hanging support material, and the driving piece is press-fitted from above, so it is easy to restore the material without much labor. It can be set in any position to perform backfilling work.

In addition, the driving piece is configured to be rotatable relative to the fixed receiving piece, and can be rotated over a wide range, making it possible to efficiently align the gap between the retaining material and the backing to suit wide and narrow slopes. can do well. Furthermore, the present invention is composed of two pieces as a whole, and each piece is made of a molded product such as aluminum casting that has a simple structure and is easy to mold, so it is easy to process and has durability that can withstand repeated use. Since the weight is less than 173 mm, it is easy to carry and useful for civil engineering and construction work.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the backfilling piece of the present invention, Fig. 2 is a front view of the fixed receiving piece constituting the product of the present invention, Fig. 3 is a plan view of the same, Fig. 4 is a side view of the same, Fig. 5. 6 is a top view of the driving piece, FIG. 6 is a side view of the same, FIG.
Figure 10 is a perspective view showing the backfill liner attached to the back side of the fixed receiving piece, Figure 11 is a perspective view of the backfill liner, and Figure 12 is a perspective view of the backfill liner. A perspective view showing the retaining frame, and FIGS. 13 and 14 are explanatory diagrams showing the state in which the earth retaining material and the backing are installed. 1... earth retaining material, 2... restored, 3... strut, 4
... flint material, 5 ... backfilling material, 10 ... fixed receiving piece, 11 ... opposing plate, 12 ... inclined concave surface part, 1
3a, 13b... Stair step portion, 14... Ear portion, 15
... Bolt through hole, 16... Hanging bolt, 17.
...Lower end piece, 18... Hanging support, 19...
Through hole, 20... retaining nut, 21... buffer spring,
22... Handle, 23... Connecting ring, 30... Drive piece, 31... Arc-shaped convex surface part, 32... Plane part,
33... Handle portion, 34... Hand hole, 35... Tool insertion hole, 40... Backfill liner. Applicant: Marufuji Sheet Pile Co., Ltd. Agent
Person Ashi 1) Naoe Figure 13 Figure 14 Procedural Amendment (Voluntary) March 9, 1986

Claims (1)

[Scope of Claims] 1. A backfilling piece consisting of a combination of two members: a fixed receiving piece and a wedge-shaped driving piece, in which one side of the driving piece is an inclined surface having an arcuate convex surface, and the fixed receiving piece is in close contact with the fixed receiving piece. A mountain retaining backfill characterized in that the opposing receiving surface of the piece is a concave part into which the arc-shaped convex part fits, and a hanging support member that can be connected to the upper end of the earth retaining material is provided on the upper part of the fixed receiving piece. piece. 2. The backfilling piece according to claim 1, wherein the surface opposite to the slope of the driving piece is a flat surface. 3. The backfilling piece according to claim 1 or 2, wherein the driving piece has a slope portion formed by decreasing the thickness from one end to the other end, and having a middle height at the center. 4. The backfilling piece according to claim 1, wherein the opposing receiving surface of the fixed receiving piece is an inclined concave surface that is inclined from one end to the other end. 5. Claims 1 or 4, wherein the fixed receiving piece has a height adjusting ear portion with a stepped portion at both ends, and a hanging support member is provided through the ear portion. Yamadome backfill piece as described. 6. The mountain retaining backfilling piece according to claim 1, wherein at least one of the fixed receiving piece and the driving piece is formed from a lightweight durable material such as die casting, aluminum casting, or plastic material.