JPH0530937B2 - - Google Patents

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 driven in to prevent collapse of excavated walls, and then the earth retaining materials are raised up, cut beams, It is supported using main materials such as flint. That is, as shown in Fig. 12, a raised wall 2 is attached horizontally to the inside of an 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 abutting portions of the ribs and the struts are tightened by bolting or welding, and flint materials 4 are attached to the corner portions of the ribs and the intersections of the ribs and the struts to secure the piles. It forms a frame. In this case, the gap between the earth retaining wall 1 and the upright 2 is backfilled with conventional backfilling material 5 such as concrete, and the reaction force of the branch of the earth retaining wall is applied as a uniformly distributed load to the uprighting. The structure was constructed in such a way that an average axial force is applied to the struts through the raised ribs.

When performing backfill construction as described above, there will be no problem if the facing surfaces of the earth retaining wall and the upright 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. In many cases, the driving direction of the steel sheet piles is misaligned due to factors such as the hardness and softness of the ground, and the facing surfaces of the earth retaining wall and the upright are not parallel. In other words, the retaining wall 1 may be built with an angular deviation in the horizontal direction relative to the raised wall 2, or the retaining wall may be built with an angle in the vertical direction (No. 13). Sometimes (Figure 14). As a result, the outer surface of the backfilling material 5 and the earth retaining wall 1 or the backfilling 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 making it difficult to excavate. This may cause the wall to collapse or damage to the components. Therefore, as described above, there has been a long-awaited development of a backfilling material that can be brought into close contact with the retaining wall and the retaining wall even if the facing surfaces of the retaining wall and the retaining wall are not parallel.

[Summary of the Invention] The present inventor previously proposed the invention in Japanese Patent Application No. 149718/1983, with the aim of eliminating the drawbacks of the conventional method described above.
We proposed a backfilling tool for mountain retaining with the following contents. In other words, it is composed of a driving tipter and a gap adjustment unit that are combined with each other to form a wedge device.
The cotter and the adjustment unit each have sloped surfaces facing each other, and are assembled so that both slopes are slidably in close contact with each other in the direction of driving the cotter. An arc-shaped recess having an arc-shaped cross section in a direction perpendicular to the driving direction is provided, and a camber member having a half-moon cross section is rotatable around the arc-shaped center of the arc-shaped recess. The present invention relates to a back-filling tool for a mountain fastening, which is fitted and the camber member is held by guide members fixed to the upper and lower ends of the arc-shaped recess and 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 backfilling tool for heap retaining in the prior invention is composed of a driving tipter and a gap adjustment unit, but the gap adjustment unit has a rotatable camber therein. Incorporated into
Moreover, since the camber was assembled to the adjustment unit body in such a way that it could not be separated, its structure was relatively complex and required time and effort to process and manufacture, and furthermore, the rotation angle of the camber could not be increased. In addition, because such backfilling tools require strength, they have traditionally been made of steel, and each set weighs approximately 15 to 20 kg, making it difficult to carry and install them manually at high places, such as when lifting from the ground. Moreover, because the dismantling and recovery work was not lightweight, the work was laborious and dangerous, 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 back-filling piece for a mountain retaining according to the present invention has a simple structure consisting of a fixed receiving piece and a driving piece, and the tilting rotation angle range of the driving piece is widened, and the piece can be made lightweight as a whole. It provides a backfill piece.

[Means for Solving the Problems] In order to achieve the above object, the inventor of the present invention, as a result of various studies, has developed a backfill piece consisting of two members, a fixed receiving piece and a driving piece, in which the driving piece is wedge-shaped as a whole. , and has a sliding surface in contact with the receiving piece on one side thereof, a plurality of through holes having different drilling heights on the upper part thereof, and the horizontal cross-sectional shape of the sliding surface is formed into an arcuate convex surface. . On the other hand, the receiving piece has a sliding surface on one side thereof with which the driving piece comes into contact, and a hanging support member that can be fixedly attached in a raised position is provided on the upper part of the receiving piece. It has been found that by providing a concave portion into which the arcuate convex surface can fit, a backfilling piece that can solve the above problems can be obtained.
In the present invention, by forming at least one of the receiving piece and the driving piece from a lightweight material such as die casting, aluminum casting, or plastic material, a lightweight backfilling piece weighing less than 1/3 of the conventional weight can be obtained. be.

[Examples] The present invention will be specifically described 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 receiving piece denoted by numeral 10 and a driving piece denoted by numeral 30, each of which is made of die casting, aluminum casting, polyamide resin (nylon), etc. It is made of a molded product such as plastic, and when used, the two pieces are placed one on top of the other.

First, the structure of the receiving piece 10 will be explained in detail with reference to FIGS. 2 to 4. In the drawings, 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. Also, opposing plate 1
Step-like steps 13a and 13b are provided on both the left and right sides of 1.
Height adjusting ears 14, 14 provided on the lower surface are integrally formed, and vertical bolt holes 15 are provided near both ends of the ears 14. Reference numeral 16 denotes a pair of hanging bolts inserted into the bolt holes 15, and the lower end portions of the bolts are provided with the stepped portions 13a or 1.
The large end piece 17 that can be engaged with 3b is fixed in an L shape or an inverted L 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 for loosely inserting the bolt 16, and the upper part of the bolt 16 is inserted into the hole to connect the support material 18 so as to be rotatable about the suspension bolt 16, Moreover, it is configured to be movable in the vertical direction along the bolt. In addition, 20
is a retaining nut screwed onto the upper end of the bolt 16;
A buffer spring 21 is interposed between the nut and the support member 18. Also, 22 is a handle,
It is jointed to the upper part of the pair of hanging bolts 16 via connecting rings 23 formed at both ends.
Note that on the upper surface of the opposing plate 11, an 11th
A pair of locking grooves 52 are provided so that a backfill liner 40 as shown in the figure can be secured via a horn-shaped protrusion 51.

Next, the structure of the driving piece 30 is shown in FIGS. 1 and 5.
The explanation will be made with reference to FIGS. Driving piece 3
As can be clearly seen from the perspective view of FIG. 1, 0 is constituted by a wedge-shaped 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 receiving piece 10 that is sloped, and the longitudinal center of the wedge-shaped piece 30 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. In addition, a plurality of insertion holes 35 for extracting tools are formed in the lower part of the handle portion and the sloped portion of the driving piece.

The backfilling piece of the present invention is composed of two members, the receiving piece 10 and the driving piece 30 configured as described above, and when performing backfilling work for mountain retaining work, the above-mentioned two pieces are combined as explained below. use. That is, in mountain retaining work, the receiving piece 10 according to the present invention is placed at the backfilling position between the earth retaining wall 1 and the upright 2, and the receiving piece 10 is installed at the backfilling position between the earth retaining wall 1 and the upright 2 through the hanging support provided on the top thereof, that is, the hanging bolt 16 and the support 18. Hang it on top of the holder 2 as shown in FIG. 7 or 8 and hold it so that it does not fall. In this case, the H-shaped steel used as the upright is different in size depending on the load of the retaining structure, so the flange length of the H-shaped steel differs each time the size changes.

Therefore, when the flange length of H-beam steel is large,
The supporting position of the lower end piece 17 of the hanging bolt 16 is
By changing the step part 13a to 13b on the lower surface of the ear, the height of the receiving piece 10 can be adjusted so that the center of the receiving piece 10 is at the center of the H-shaped steel web, as shown in FIG. 7, and facing the hanging support 18. Adjust the distance from the top surface of the plate 11. Then, as shown in FIG. 7, the flange surface of the upright 2 and the back surface of the receiving piece 10 are brought into close contact with each other, and as the case may be, an appropriate number of backfill liners 40 are stacked on the back surface of the fixed receiving piece 10. After aligning (see Figure 10), the receiving piece 1
The driving bead 30 is inserted so that the arcuate protruding surface portion 31 of the driving bead 30 fits into the inclined concave surface portion 12 of the drive bead 30. that time,
If the horizontally opposing surfaces of the raised-up 2 and the earth retaining material 1 are not parallel but are inclined (see FIG. 9), the driving piece 3 is inserted along the inclined concave surface portion 21.
0 is rotated in the horizontal direction as shown in FIG.
Further, when the degree of inclination is large, as shown in FIG. 9C, an inclined liner 41 is inserted to eliminate the gap between the horizontally facing surfaces. Finally, the driving piece 30 is strongly driven to press fit the backfilling piece of the present invention between the earth retaining material 1 and the upholstery 2, and fix it 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 upright. The reason for this is that the construction accuracy of earth retaining material 1 is usually within 1/100, and even considering the amount of movement of earth retaining material due to excavation, the slope ratio is within 1/50 even under the worst conditions. . Therefore, the width of the gap between the vertically opposing surfaces of the upholstery and the earth retaining material is a small value of at most 4 mm per 200 mm of height (No. 14).
(see figure). Furthermore, considering the presence of earth and sand that adheres to the earth retaining material, simply by 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 mentioned above, There is no need to adjust the angle in the vertical direction.

[Effects of the Invention] As explained above, according to the present invention, the following effects can be obtained.

(1) The support member for hanging the receiving piece allows for smooth transportation, and it can also be temporarily fastened by hooking it at any position along the flange of the stand-up.

(2) Since the driving piece is wedge-shaped, it is easy to insert into narrow and irregularly shaped gaps.

(3) Multiple holes are formed in the upper part of the driven piece, which reduces the weight of the piece.
Easy to drive and carry.

(4) In addition, even if a tightening force is applied to the driven piece, it is difficult to insert a tool such as a wrench into the hole in the piece.
It can be easily removed.

(5) Since the facing surfaces of the driving piece and the receiving piece are sliding surfaces consisting of an arcuate convex surface and a concave surface, even if the gap between the earth retaining material and the upright is not parallel, the width and slope of the gap can be adjusted. By rotating the two relative to each other according to the situation, backfilling can be performed by fitting between the gaps.

(6) Since there is no need to pour concrete during backfilling, the labor of pouring is saved, construction time is shortened, and no waste material is generated.

(7) Both the receiving piece and the driving piece can be used repeatedly.

(8) As a result of the above, significant cost reductions in backfilling costs can be achieved.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of the backfilling piece of the present invention, Fig. 2 is a front view of the receiving piece constituting the product of the present invention, Fig. 3 is a plan view of the above, Fig. 4 is a side view of the above, and Fig. 5 is a A plan view of the driving piece, FIG. 6 is a side view of the same as above,
Fig. 7 is a longitudinal sectional view showing the combined usage state of the product of the present invention, Fig. 8 is a plan view of the same as above, Fig. 9 is an explanatory view of the main part showing the rotating state, and Fig. 10 is back-fitting on the back side of the receiving piece. Perspective view showing the state in which the liner is attached, No. 11
FIG. 12 is a perspective view of the backfilling liner, FIG. 12 is a perspective view of the retaining frame, and FIGS. 13 and 14 are explanatory diagrams showing the state of the earth retaining material and the erecting. 1...Earth retaining material, 2...Horizontal, 3...Structure beam,
4... Flint material, 5... Backfilling material, 10... Receiving piece, 11... Opposing plate, 12... Inclined concave surface portion, 1
3a, 13b...Step-like step part, 14...Ear part, 1
5...Through hole for bolt, 1...Hanging bolt, 17
... Lower end piece, 18 ... Hanging support, 19 ...
... Through hole, 20 ... Retention nut, 21 ... Buffer spring, 22 ... Handle, 23 ... Connecting ring, 30 ... Drive piece, 31 ... Arc-shaped convex surface part, 32 ... Plane part, 33 ... ...Handle part, 34...Hand hole, 35...
Tool insertion hole, 40...backfill liner.

Claims (1)

[Scope of Claims] 1. Consists of a receiving piece 10 and a wedge-shaped driving piece 30 having the following structure, both of which are inserted between the earth retaining material and the upholstery, facing each other, and their opposing surfaces are brought into close contact with each other so that they can freely slide. A backfill piece for mountain retaining. Driving piece: A wedge-shaped piece body has a sliding surface on one side that comes into contact with the receiving piece, and a plurality of through holes with different drilling heights are provided on the upper part, and the sliding surface has a horizontal cross-sectional shape. The driving piece 30 is formed into an arcuate convex surface. Receiving piece: has a sliding surface on one side of the piece body with which the driving piece comes into contact, and a hanging support member is provided on the upper part of the sliding surface for fixing it to the belly riser; The receiving piece 10 has an arcuate concave surface into which an arcuate convex surface can fit. 2. The backfilling piece for a mountain fastener according to claim 1, wherein one of the through holes drilled in the driving piece is a hand hole for handling, and the other is a hole for inserting a tool. 3. The 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.
Back-filling piece for mountain retaining as described in section. 4. The backfilling piece for mountain fastening according to any one of claims 1 to 3, wherein the upper surface of the receiving piece is provided with a locking groove for attaching the liner. 5. At least one of the receiving piece and the driving piece is formed from a lightweight and high-strength material such as die casting, aluminum casting, or plastic material. Backfill piece for mountain retaining.