JP3262004B2 - Backfill material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backfill material which is pushed between a sheet pile applied to an inner wall of a groove and a protruding material.

[0002]

2. Description of the Related Art Walls formed by excavation or the like are protected from collapse by driving in earth retaining materials such as sheet piles and supporting the earth retaining materials with bulging materials, cutting beams or the like. At this time, the gap between the retaining wall and the bulging material is such that the reaction force of the fulcrum of the retaining wall is evenly applied to the flared material and the average axial force acts on the cutting beam via the flaring material. Is filled with concrete backfill. However, since a concrete backfill material is used, a great deal of labor is required for casting, curing, and disposal of waste materials, and the workability is poor. As an alternative to a concrete backfill material, a backfill block using wedges (Japanese Utility Model Publication No. Sho 61-17075), a backfill liner combining a plurality of plate-shaped main bodies (Japanese Utility Model 3-2466)
No. 9), a thickness adjusting material for back-filling in which the liners are interlocked with each other with square projections (Japanese Utility Model Publication No. 4-15795),
A backing piece in which a driving piece and a receiving piece are overlapped on a conical surface (Japanese Patent Publication No. 5-30937). Japanese Unexamined Patent Publication No. 6-341144), a back-filling device that supports a camber member movably with a sphere (Japanese Patent Publication No. 6-8954)
No. 4) has been proposed.

[0003]

The gap between the sheet pile and the flared material varies depending on the construction site, and also varies at the same construction site depending on the shape of the excavated groove. Therefore, it is required that the backfill material be changed in shape so as to correspond to the gap in which the space shape is variously changed, and that the reaction force be sufficiently provoked and transmitted to the material. Also,
Since various tools are used at a work site where the tools are relatively roughly handled, the tools must also have excellent durability. However, there are few conventional backfill materials that satisfy all of these requirements, and some have poor workability. The present invention has been devised to solve such a problem. In addition to making each part firmly, the gap between the sheet pile and the bulging material is filled with a minimum number of parts, and the earth retaining wall is provided. It is an object of the present invention to efficiently transmit the reaction force of the stomach to the flared material and to prevent collapse of the groove wall.

[0004]

The backfill material of the present invention is a backfill material to be inserted into a gap between a flaring material and a soil retaining material in order to achieve the object, and comprises a receiving piece, a receiving piece, A receiving piece auxiliary tool that is slidably fitted to the receiving piece, a plate-shaped liner that is fitted to the receiving piece, and a driving piece that is driven between the receiving piece auxiliary tool and the earth retaining material;
And a latch for hanging the receiving piece on the prone material. By connecting a number of plate-shaped pieces according to the size of the gap between the flared material and the earth retaining material, a backfill material having a required thickness is obtained. The receiving piece has a concave cylindrical surface on one side, and an engaging protrusion and an engaging portion are formed at the center and the lower edge of the upper edge of the concave cylindrical surface. The other side is a flat surface, and an engagement groove is formed at the center of the upper edge and the center of the lower edge. A shoulder portion having an insertion hole is provided on the upper left and right sides, and a guide portion partitioned by a pair of guide pieces and a side surface with a step is provided below the shoulder portion.

[0005] The receiving piece assisting tool has a convex cylindrical surface curved on one side with the same curvature as the concave cylindrical surface of the receiving piece. The sliding convex portion and the engaging convex portion engage with the engaging projection and the engaging portion of the receiving piece, respectively. Sliding grooves are formed at the upper and lower ends of the convex cylindrical surface. The other side is an inclined surface that extends downward and is inclined with respect to the convex cylindrical surface. The plate-shaped liner has a plate-shaped main body having the same thickness, and engagement projections to be fitted into the engagement grooves of the receiving piece are provided at the upper edge central portion and the lower central portion on one surface. On the other surface, an engagement groove having the same shape as the engagement groove of the receiving piece is formed at the center of the upper edge and the center of the lower edge, respectively. On the upper end surfaces of the receiving piece and the plate-like liner, a holding member for holding and holding the adjacent plate-like liner is rotatably provided, and a stopper bolt for pivotally supporting the holding member is urged upward by the elastic force of the spring. ing.

The locking fitting has a pair of legs inserted into an insertion portion formed on a shoulder of the receiving piece, and is engaged with a step provided on a side surface of a guide portion of the receiving piece. A protrusion is provided at the tip of each leg.
Further, a bearing of a locking arm to be hung on the protruding material is rotatably fitted to each leg. The latch is connected to a pivot portion provided on one leg so that a horizontal portion extending from the other leg is swingably connected, and between the horizontal portion extending from the one leg and the other horizontal portion. A leaf spring is inserted, and both legs are biased to be close to each other. The driving piece has an inclined surface on one side inclined at the same angle as the inclined surface of the receiving piece assisting tool, and a vertical surface on the other side which extends upward with respect to the inclined surface.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in an exploded perspective view of FIG. 1, a back-filling material according to the present invention has an H-shaped steel 3 (see FIG. 1
0) and the receiving piece 10, the required number of plate-shaped liners 30, 30,.
The space between the H-section steel 3 and the sheet pile 2 is filled by press-fitting the driving piece 40 between the support piece 20 (see FIG. 10) and the receiving piece assisting tool 20. The receiving piece 10 is provided with a locking fitting 60 for hooking the backfill material to the H-shaped steel 3. Receiving piece 10, Receiving piece auxiliary tool 2
0, the plate-shaped liner 30, and the driving piece 40 are made of an aluminum alloy casting for weight reduction. Receiving piece 10
The side facing the receiving piece assisting tool 20 has a concave cylindrical surface 1.
It is molded into 1. An engagement projection 13 having an engagement groove 12 is formed at the center of the upper edge of the concave cylindrical surface 11, and an engagement portion 15 having an engagement groove 14 is formed at the lower edge of the concave cylindrical surface 11.
Are formed along.

The receiving piece 10 has a flat surface 16 on the side facing the plate-shaped liner 30, as shown in FIG. 2, and has dovetail-shaped engaging grooves 17, 1
8 are formed. The upper part of the receiving piece 10 is formed with shoulders 51, 51 which project left and right as shown in the figure. An insertion hole 52 is formed in each shoulder 51, and the insertion hole 52 is opened between a pair of guide pieces 53 and 54 extending below the shoulder 51. The guide part 55 partitioned by the guide pieces 53 and 54 has one side open. As shown in FIG. 3, a side surface 57 provided with two steps 56 is provided on the back side of the guide portion 55. On the upper end surface of the receiving piece 10, a holding member 58 for holding down the plate-shaped liner 30 is provided with a fixing bolt 59.
It is attached so as to be rotatable around.

The receiving piece assisting device 20 includes
Convex cylindrical surface 21 curved with the same curvature as concave cylindrical surface 11
To face the receiving piece 10. As shown in FIG. 4, the opposite side of the receiving piece assisting tool 20 has a flat inclined surface 22 inclined with respect to the convex cylindrical surface 21 so as to spread downward. On the upper edge of the receiving piece assisting tool 20, a sliding convex portion 23 that fits into the engaging groove 12 of the receiving piece 10 is formed with the same curvature as the convex cylindrical surface 21. A sliding groove 24 into which the engaging portion 15 of the receiving piece 10 fits is formed at the lower edge of the receiving piece assisting tool 20 with the same curvature as the convex cylindrical surface 21. When the sliding protrusion 23 and the sliding groove 24 are fitted to the engaging protrusion 13 and the engaging portion 15, respectively, the receiving piece assisting tool 20 is slidably connected to the receiving piece 10 via the cylindrical mating surface. Therefore, when adjusting the positional relationship of the receiving piece assisting tool 20 with respect to the receiving piece 10 along the cylindrical mating surface, the flat inclined surface 22 on the opposite side can be held in an appropriate posture with respect to the sheet pile 2. . Also,
Since the upper and lower edges are engaged with each other, the slidable receiving piece assisting device 20 does not rotate in a vertical plane with respect to the receiving piece 10.

The plate-shaped liner 30 disposed on the side opposite to the receiving piece assisting tool 20 is made of a plate having substantially the same thickness as shown in FIG. On one side of the plate-like liner 30,
Engagement projections 31, 32 that fit into the engagement grooves 17, 18 of the receiving piece 10 are formed on the upper edge and the lower edge. On the opposite surface of the plate-shaped liner 30, engagement grooves 33, 34 similar to the engagement grooves 17, 18 of the receiving piece 10 are formed on the upper edge and the lower edge. In addition, a relief portion (not shown) for fitting into the engagement protrusion 32 as necessary is provided on the upper portion of the engagement groove 34.
Is preferably provided. A similar relief is provided in the engagement groove 18 of the receiving piece 10. Thereby, for example, when the engaging protrusions 31 and 32 of the plate-like liner 30 are aligned with the engaging grooves 17 and 18 of the receiving piece 10 and the plate-like liner 30 is slid downward with respect to the receiving piece 10, The engagement protrusions 31 and 32 are engaged with the mating grooves 17 and 18, respectively, and the plate-shaped liner 30 is connected to the receiving piece 10. Similarly, adjacent plate-shaped liners 30, 30 are connected to each other. Since the upper edge and the lower edge are engaged with each other, the connected receiving piece 10 and the plate-like liner 3 are connected.
0, 30... Do not rotate relative to each other in a vertical plane.

At the upper end surface of the plate-shaped liner 30, a holding member 38 for holding down the adjacent plate-shaped liner 30 is attached. The presser fitting 38 is provided so as to be rotatable about a stop bolt 39, similarly to the presser fitting 58 of the receiving piece 10. Plural plate liners 30, 30
FIG. 6 shows a state in which the receiving piece 10 with which the.
Shown in The plate-shaped liner 30 adjacent to the receiving piece 10 is held down by the holding metal 58 of the receiving piece 10, and the other plate-shaped liners 30 are held down by the holding metal 38 of the adjacent plate-shaped liner 30. As shown in FIG. 7, the holding metal fittings 38 and 58 are provided with the stopper bolt 3 inserted into the bolt hole a formed on the upper surface of the receiving piece 10 and the plate-like liner 30.
9, 59, and has a holding portion b that is slightly upwardly inclined so as to be able to rotate with a fingertip. The fixing bolts 39 and 59 are connected to the receiving piece 10 and the plate-like liner 30.
The nut d is inserted through the loose nut c
Has been stopped. Further, an upward force is always urged against the stop bolts 39, 59 by a spring e inserted into the shafts of the stop bolts 39, 59. Therefore, the holding portion b of the holding metal fittings 38, 58 easily rotates by the force of the fingertip, and holds down the adjacent plate-like liners 30, 30.
As a result, the backing material can be carried as a set without the plate-shaped liners 30, 30,.

The driving piece 40 to be driven between the receiving piece assisting tool 20 and the sheet pile 2 is
Has a flat inclined surface 42 inclined at the same angle as that of the inclined surface 22. The opposite side is a vertical surface 43 that abuts the sheet pile 2, and as shown in FIG.
(The thickness of the driving piece 40) increases upward. In order to reduce the weight of the driving piece 40, a depression 44 (or an opening reaching the opposite inclined surface 42) is formed in the vertical surface 43. Driving piece 40
Has an extension 45 extending from the inclined surface 42 side,
The upper end of the extension 45 is a wide driving head 46. An opening 47 of an appropriate size is also formed in the extension part 45, so that the driving piece 40 can be reduced in weight and can be easily gripped during transportation or the like. In the receiving piece 10 and the plate-like liner 30 shown in FIGS.
The periphery of the engaging portion 15 and the engaging protrusions 31 is solid. However, this is for simplicity of the drawing. For example, when the receiving piece 10 and the plate-shaped liner 30 are manufactured by a casting method, the core punching holes may be formed in the engagement protrusions 13 as necessary.
It is provided near the engaging portion 15 and the engaging protrusions 31. Of course, when the receiving piece 10 and the plate-like liner 30 are manufactured by a casting method by machining, they can be made solid as shown in the figure.

As shown in FIG. 9, the locking fitting 60 has legs 61, 61 which are inserted into insertion holes 52, 52 provided on the left and right of the upper part of the receiving piece 10, and the legs 61, 61.
Locking projections 62, 62 are fixed to the tip of the. One leg 61 has a horizontal portion 63 whose upper portion is bent at substantially a right angle.
Is provided, and the tip of the horizontal portion 63 is connected to the other leg 61.
Are pivotally supported by a pivot portion 64 provided at the center. The other leg 61
Is a horizontal portion 65 which is further extended and bent at a substantially right angle. The tip of the horizontal portion 65 is a slightly bent tip portion 66.
And a stopper 67 is attached to the distal end 66. The stopper 67 faces a projection 68 formed at a corner of one leg 61. A leaf spring 69 is inserted between the horizontal portions 63 and 65, and the leg portions 61 and 61 are close to each other so that the horizontal portion 63 is opened with respect to the horizontal portion 65 by the elastic force of the leaf spring 69. You are being biased to. When the horizontal portions 63, 65 are gripped against the elasticity of the leaf spring 69, one leg 61 swings about the pivotal support 64, and the space between the legs 61, 61 is opened. The relative positional relationship between the legs 61 and 61 can be set to a predetermined relationship by locking the stopper 67 to the projection 68 and changing the height protruding from the receiving piece 10.

A pair of flanges 71, 72 are formed on each of the legs 61, 61. Flange 71
The holes of the bearings 74, 74 provided on the base end side of the locking arms 73, 73 are inserted between the legs 61, 61 between the first arm 72 and the second arm 72. As a result, the locking arms 73, 73
It becomes possible to rotate around 1,61. Locking arm 7
Projections 75 that are hung on the H-section steel 3 are provided downward at the tips of the members 3 and 73. The driving piece 40 is provided between the bearings 74, 74 and the upper flange portions 71, 71.
To reduce the impact applied when hitting
In order to prevent damage to the spring, springs 76, 76 are interposed. When the horizontal portions 63, 65 are gripped against the resilience of the leaf spring 69, the legs 61, 61 open as described above, and engage with the lower or higher steps 56, 56 of the receiving piece 10. The state of engagement with the stop projections 62, 62 is released. And
After adjusting the locking fitting 60 to the required height, the horizontal portions 63, 6
5 is released, the elasticity of the leaf spring 69 causes the leg 6 to move.
1 and 61 approach each other, and the locking projections 62 and 62 engage with different steps 56 and 56 in which the height of the receiving piece 10 is different. In this embodiment having two steps 56, 56,
In accordance with the size of the H-shaped steel 3, the locking fitting 60 can be adjusted to a two-stage height. When a large number of steps 56 are formed, the height of the locking fitting 60 is adjusted in more steps.

Next, an operation of inserting a backfill material into a gap between the sheet pile 2 and the H-section steel 3 (belly material) will be described. As shown in FIG. 10, soil and sand 1
It is earth-retained with a sheet pile 2 (earth retaining material) in order to prevent collapse. The H-shaped steel 3 is applied to the sheet pile 2, and the struts 4 are inserted between the H-shaped steels 3 on both sides. At this time, sheet pile 2
In general, the space between the steel and the H-section steel 3 has a spatial shape that changes at each location. Therefore, a backfill material is set according to this spatial shape. First, according to the gap between the sheet pile 2 and the H-section steel 3, the required number of plate-like liners 30, 3
0... Is connected to the receiving piece 10. As shown in FIG. 6, the receiving piece 10 and each of the plate-like liners 30, 30,... Are held down by holding metal fittings 58, 38, 38,. Mating projections 31,3
Since 2, 31 and 32 are fitted, there is no possibility that the mutual positional relationship is shifted or the receiving piece 10 falls off.

A receiving piece assisting tool 20 is fitted to the receiving piece 10 having a predetermined thickness by connecting the plate-shaped liners 30, 30,. The receiving piece aid 20 is
Since it is slidable along the cylindrical mating surface with respect to the receiving piece 10, the sheet pile 2 can be moved in accordance with the clearance at the construction site.
The inclined surface 22 can be surface-matched to the surface of. For example, when the side surface of the H-section steel 3 is inclined with respect to the surface of the sheet pile 2, the receiving piece assisting tool 2 corresponding to the inclination angle
0, the inclined surface 2 against the surface of the sheet pile 2
2 are parallel to the width direction. In addition, the backing material is attached to the H-shaped steel 3 by hanging the locking fitting 60 on the flange of the H-shaped steel 3. At this time, by adjusting the height of the latch 60 protruding from the receiving piece 10,
The backfill material can be hooked on the H-shaped steel 3 having a different shape.

Between the backing material thus adjusted and the sheet pile 2, the inclined surface 42 of the auxiliary tool 20 is held in contact with the inclined surface 22, and a wedge-shaped driving piece 40 is driven. The backfill material is firmly pressed between the sheet pile 2 and the H-section steel 3 by the wedge action of the driving piece 40. And
Since the sheet contact between the sheet pile 2 and the vertical surface 43 of the driving piece 40 is ensured, the reaction force is ensured by the backing material through the backing material.
It is transmitted to the mold steel 3 and the upholstery material 4, and the collapse of the wall surface is prevented. Driving piece 4 with inclined surfaces 22 and 42 face-to-face
Since 0 is hit, the head 46 of the driving piece 40 is separated from the surface of the sheet pile 2. Therefore, the driving piece 40
Is easily performed without the hammer or the like coming into contact with the sheet pile 2. When dismantling after civil engineering work,
The driving piece 40 is easily pulled out by orbiting the opening 47 and pulling the head 46 with a wire. After the driving piece 40 is pulled out, the receiving piece 10, the receiving piece auxiliary tool 20, the plate-shaped liners 30, 30
Are easily removed from the H-section steel 3 and reused at the next work site.

[0018]

As described above, the backing material of the present invention slidably engages the receiving piece assisting tool with the receiving piece along the cylindrical mating surface. Even if the gap between the earth retaining material such as a sheet pile and the protruding material which are erected in the slope is inclined, the receiving piece assisting tool can be faced to the surface of the earth retaining material. Therefore, the reaction force supporting the groove wall surface is efficiently transmitted to the bulging material and the cutting beam, and the collapse of the wall surface is reliably prevented. Also, since the height of the locking bracket can be adjusted,
It is possible to hook the backfill material even to a bulging material such as H-shaped steel having a different shape. Further, since the individual members are made of a lightweight aluminum alloy and are connected to each other, it is easy to carry. As described above, the backfill material according to the present invention can be used in various different situations depending on the construction site, and is used as an effective backfill material for preventing collapse of a wall surface.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a backfill material according to the present invention.

FIG. 2 is a perspective view showing a receiving piece of backfill material.

FIG. 3 is a front view of a receiving piece to which a locking fitting is attached.

FIG. 4 is a perspective view of a receiving piece assisting tool.

FIG. 5 is a perspective view of adjacent plate-like liners.

FIG. 6 is a plan view of a receiving piece to which a plate-shaped liner is connected.

FIG. 7 is a cross-sectional view of a holding piece provided on an upper end surface of a receiving piece and a plate-like liner.

FIG. 8 is a perspective view of a driving piece.

FIG. 9 is a perspective view of a latch.

FIG. 10: Backfill material inserted between sheet pile (earth retaining material) and H-shaped steel (raveling material)

[Explanation of symbols]

1: earth and sand on the groove wall 2: sheet pile (earth retaining material) 3: H
Shape steel (belly material) 4: Strut material (cut beam) 10: Receiving piece 11: Concave cylindrical surface 12, 1
4, 17, 18: engagement groove 13: engagement protrusion 15: engagement portion 16: flat surface 20: receiving piece auxiliary tool 21: convex cylindrical surface 2
2: Flat inclined surface 23: Sliding projection 24: Sliding groove 30: Plate-shaped liner 31, 32: Engagement projection 3
3, 34: engagement groove 40: driving piece 42: flat inclined surface 43:
Vertical surface 44: Depression 45: Extension 46: Head for driving 47: Opening 51: Shoulder 52: Insertion hole 53, 54: Guide piece 55: Guide 56: Step 57: Side 58: Holder 59: Stop Bolt 60: Locking fitting 61: Leg 62: Locking projection
63, 65: horizontal portion 64: pivot portion 66: tip portion 67: stopper
68: Projection 69: Leaf spring 71, 72: Flange part 73: Locking arm 74: Bearing 75: Projection part 76: Spring a: Bolt hole b: Holding part c: Loose nut
d: Nut e: Spring

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Masamichi Sato 2-2-2 Higashi Shinagawa, Shinagawa-ku, Tokyo Inside Nihon Light Metal Co., Ltd. (56) References JP-A-6-341144 (JP, A) 5-30937 (JP, B2) JP 6-89544 (JP, B2) JP 3-24669 (JP, Y2) JP 415795 (JP, Y2) (58) Field surveyed (Int) .Cl. ⁷ , DB name) E02D 17/04

Claims (3)

(57) [Claims] 1. A backfill material inserted into a gap between a belly material and an earth retaining material, wherein an engagement protrusion and an engagement portion are formed at a center and an upper edge of an upper edge of a concave cylindrical surface on one side. An engagement groove is formed at the center of the upper edge and the center of the lower edge of the flat surface on the other side, shoulders having insertion holes are provided on the upper right and left sides, and are partitioned by a pair of guide pieces and a side face with a step. A guide piece provided below the shoulder, and a convex cylindrical surface curved on one side with the same curvature as the concave cylindrical surface of the receive piece. A receiving piece assisting tool in which a sliding convex portion and a sliding groove respectively meshing with each other are formed at an upper end and a lower portion of the convex cylindrical surface, and the other side is an inclined surface which is spread downward and inclined with respect to the convex cylindrical surface; It has a plate-shaped main body of the same thickness, and the engaging projections that fit into the engaging grooves of the receiving piece have the upper edge central part and the lower part on one surface. An engagement groove having the same shape as the engagement groove of the receiving piece is provided at the center of the upper edge and the lower edge of the other surface, and is formed at the shoulder of the receiving piece. A pair of legs is inserted into the inserted portion, and a locking projection that meshes with a step provided on the side surface of the guide portion of the receiving piece is provided near the tip of each leg, and is hung on a belly material. A locking fitting in which the bearing of the locking arm to be stopped is rotatably fitted to each leg, and one side has an inclined surface inclined at the same angle as the inclined surface of the receiving piece auxiliary tool, and the other side has It is equipped with a driving piece that is a vertical surface that spreads upward with respect to the inclined surface, and connects a number of plate-like pieces according to the size of the gap between the bulging material and the earth retaining material Backfill material. 2. The latch according to claim 1, wherein a horizontal portion extending from the other leg is swingably connected to a pivot provided on one leg, and the horizontal portion extends from the one leg. A back-filling material in which a leaf spring is inserted between the portion and the other horizontal portion, and both legs are biased to be close to each other. 3. The receiving piece and the plate-shaped liner according to claim 1, further comprising a rotatable holding member for pressing and holding an adjacent plate-shaped liner, and a locking bolt for pivotally supporting the holding member is provided by a spring. Backfill material urged upward by elasticity.