JP7182506B2 - Car frame structure and embankment restoration method using the same - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to a car frame structure and an embankment restoration method using the same.

In the past, embankments built by piling up earth and sand on the ground were widely used in order to pass railroad tracks higher than the ground. In such cases, early restoration is important, so temporary restoration will be carried out by piling up large sandbags to quickly secure cross-sections, and trains will be able to resume running. After that, after constructing temporary earth retaining work, the large sandbags are removed, and full restoration is performed by embankment (see, for example, Non-Patent Document 1).

Yamamura, Itsukaichi, Kawanakajima, Fujiwara, "Damage and Restoration Measures from Torrential Rain in the Tohoku Region in August 2013 (Tazawako Line/Hanawa Line)", SED, No. 43, pp. 64-71, JR East Structural Technology Center, 2014.5

However, in the above-described conventional technology, construction of large sandbags as temporary structures, construction of temporary earth retention, and removal of large sandbags are performed as temporary restoration, and then construction of embankments as permanent structures is performed as permanent restoration. Therefore, the construction procedure becomes complicated. In addition, areas where the embankment is damaged may become weak points due to topographical factors, etc., and there is a concern that the damage will be repeated. When carrying out the main restoration, measures such as construction of drainage pipes and reinforcing materials will be taken, but the design and construction of these measures will take time, and the restoration work will be prolonged. For example, it is desirable that the drainage pipe is slanted so that the end on the deep side of the ground is high for drainage, and the reinforcing material However, it takes time to design and construct the drainage pipes and reinforcing members so that they are slanted.

Here, the problems of the conventional technology described above can be solved, and full restoration can be performed without temporary restoration. An object of the present invention is to provide a car frame structure capable of reliably restoring an embankment and a method for restoring an embankment using the same.

To this end, the cage frame structure includes a plurality of cage frames including at least one pipe containing cage frame for containing a pipe, wherein the pipe containing cage frame allows the pipe to pass through. A pipe passage panel capable of forming a pipe passage hole is provided on a front surface and a rear surface, and the pipe passage panel has a first portion having a first opening and a pipe passage hole forming portion capable of forming the pipe passage hole. The pipe passage hole forming part is positioned in contact with the upper end of the second part in an upright posture, and the first part on either the front or the back of the pipe housing cage frame has a The second part is combined in an upright position, and the second part is combined in an inverted position with the first part on the other side of the front or the back , and the front and the back of the pipe housing basket frame are vertically positioned. can be formed such that the pipe passage holes are different.

Further, in another car frame structure, the second portion is formed by combining a large mesh having a large diameter wire and a small mesh having a small diameter wire, and the pipe passage hole forming portion includes the It is one of the large meshes whose periphery is defined by the large diameter wire and which is blocked by the small mesh.

In yet another car frame structure, the pipe passage hole formation is the largest of the large meshes.

In still another car frame structure, the pipe passage hole is formed by cutting a portion of the mesh of the pipe passage hole forming portion.

In still another cage frame structure, the pipes are housed in the pipe housing cage frame in an inclined posture so that the front and rear sides of the pipe housing cage frame are different in vertical position.

In yet another car frame structure, the car frame is also fillable with ground material and stackable in multiple tiers.

In still another car frame structure, the pipe prevents the inflow of the ground material and secures a space through which an insertion member inserted into the ground can pass.

In the embankment restoration method, a plurality of car frames are piled up in multiple stages along the stepped portion of the embankment that has been stepped to construct a car frame structure, wherein the plurality of car frames are: At least one pipe containing cage frame for containing a pipe is provided, the pipe containing cage frame has pipe passage panels capable of forming pipe passage holes through which the pipes can pass, on the front and back sides, and the pipe passage panels are , a first portion having a first opening and a second portion having a pipe passage hole forming portion capable of forming the pipe passage hole are combined to form a second portion in which the pipe passage hole forming portion is in an upright posture. The first portion on one of the front or the back of the pipe containing basket frame is combined in an upright position with the second portion positioned in contact with the upper end of the portion, and the first portion on the other of the front or the back of the pipe containing basket frame is combined with the second portion. The second part is assembled in an inverted position, and the pipe passage holes can be formed such that the front and rear surfaces of the pipe housing basket frame are positioned differently in the vertical direction.

According to the present disclosure, full restoration can be performed without temporary restoration, drainage pipes and reinforcement materials can be installed later, and the embankment can be restored easily and reliably in a short period of time. can.

FIG. 4 is a conceptual diagram showing a restoration method of embankment using the car frame structure according to the present embodiment. FIG. 4 is a conceptual diagram showing an embankment restored using the cage frame structure according to the present embodiment; 4 is a photograph showing a car frame structure in the process of construction in this embodiment. FIG. 2 is a conceptual diagram showing a general reinforcement that has been constructed; It is a conceptual diagram which shows the constructed general drainage pipe. 1 is a perspective view showing the configuration of a car frame structure according to this embodiment; FIG. FIG. 7 is a diagram showing another example of the front and rear mesh plates of the second car frame in the present embodiment; FIG. 5 is a diagram showing a first example of front and rear net plates for sloping hoard pipes of the second car frame according to the present embodiment; FIG. 10 is a view showing a second example of the front and rear mesh plates for tilting the hoard pipe of the second car frame in the present embodiment; FIG. 10 is a diagram showing an example of a second car frame in which an inclined storage pipe in the present embodiment is housed within a second internal space;

Hereinafter, this embodiment will be described in detail with reference to the drawings.

FIG. 1 is a conceptual diagram showing a method of restoring an embankment using a car frame structure according to this embodiment, FIG. 2 is a conceptual diagram showing an embankment restored using a car frame structure according to this embodiment, and FIG. is a photograph showing a cage frame structure in the process of construction in this embodiment, FIG. 4 is a conceptual diagram showing a general reinforcing material that has been constructed, and FIG. 5 is a conceptual diagram showing a general drainage pipe that has been constructed. . In FIG. 1, (a) is a diagram showing the collapsed embankment, (b-1) to (b-3) are diagrams showing each process of restoration of the embankment by the conventional technology, (c-1) to ( c-3) is a diagram showing each process of restoration of embankment in the present embodiment.

In the figure, 31 is an embankment as the ground constructed on the original ground 32 . The embankment 31 extends in a direction perpendicular to the screen of FIG. It may be used for any purpose, but for convenience of explanation here, it is assumed that it is used to support a railroad track, that is, a track.

FIG. 1(a) shows a state in which a portion of the embankment 31 including the slope 33 has collapsed due to heavy rain or an earthquake. In the prior art described in the section "Background Art", the collapsed embankment 31 is restored as shown in FIGS. 1(b-1) to 1(b-3). That is, first, as shown in FIG. 1(b-1), sandbags 34 are piled up to secure the cross section of the embankment 31. Then, as shown in FIG. Subsequently, as shown in FIG. 1(b-2), a temporary earth retaining 36 is constructed and the sandbag 34 is removed. This completes the temporary recovery. Next, as shown in FIG. 1(b-3), the embankment 31 is reconstructed and the slope 33 is also formed. This completes the main restoration.

On the other hand, in the present embodiment, the collapsed embankment 31 is restored as shown in FIGS. 1(c-1) to 1(c-3). That is, first, as shown in FIG. 1(c-1), stepped construction is carried out in which the embankment 31 is cut stepwise. Subsequently, as shown in FIG. 1(c-2), the car frame structure 10 is constructed along the stepped portion of the embankment 31 that has been stepped, and the ground such as crushed stone is placed in the car frame structure 10. Carry out basket work to fill the material. This completes the main restoration. Thereafter, as shown in FIG. 1(c-3), the insertion member 40 is inserted through the car frame structure 10 into the embankment 31 as the ground. This can further improve drainage and earthquake resistance.

In the present embodiment, expressions indicating directions such as up, down, left, right, front, and rear used to describe the configuration and operation of each part of the car frame structure 10 and other members are as follows: It is relative rather than absolute, and is appropriate when each part of the car frame structure 10 and other members are in the postures shown in the drawings, but if the postures change, the postures may change. It should be interpreted with change according to change.

As shown in FIG. 2, the car frame structure 10 according to the present embodiment includes a plurality of stacked first car frames 11 and at least one second car frame 12 as car frames.

Each of the first car frames 11 has a substantially rectangular parallelepiped first internal space 17 in the same manner as a general car frame member. A substantially rectangular bottom net plate 13, which will be described later, a pair of substantially rectangular side net plates 14, which will be described later, which serve as cage members defining left and right side surfaces of the first internal space 17, and the first internal space. It has a pair of substantially rectangular front and rear net plates 15, which will be described later, as cage members that define the front and rear surfaces of the space 17, that is, the front and rear surfaces. Although the upper surface of the first internal space 17 is open in the example shown in the drawing, it may be defined by a net plate (not shown). Further, the first car frames 11 adjacent to each other on the left and right share the side mesh plate 14 , and the first car frames 11 adjacent to each other on the front and back share the front and rear mesh plate 15 . Then, as shown in FIG. 3, the first internal space 17 is filled with ground material such as crushed stone.

Each of the second car frames 12 has a substantially rectangular parallelepiped second internal space 18, and further includes a substantially rectangular bottom net plate 13, which defines the bottom surface of the second internal space 18 and will be described later. , a pair of substantially rectangular side net plates 14, which define the left and right side surfaces of the second internal space 18, and a substantially rectangular shape defining the front and rear surfaces of the second internal space 18, that is, the front and rear surfaces. and a pair of front and rear net plates 15 described later. Although the upper surface of the second internal space 18 is open in the example shown in the drawing, it may be defined by a net plate (not shown). In addition, the second car frame 12 shares the side net plate 14 with the first car frame 11 adjacent to the left and right, and the second car frames 12 adjacent to each other in the front and rear share the front and rear net plates 15 .

As shown in FIG. 3, the second internal space 18 of the second car frame 12 as a pipe housing car frame is filled with ground material such as crushed stone and serves as a pipe extending in the vertical direction. A storage tube 21 is accommodated. The front and rear mesh plates 15 as pipe passage panels are formed with pipe passage holes 19 as pipe passage holes through which the storage pipes 21 can pass. The hole storage pipes 21 are pipes for securing a space through which the insertion member 40 can pass, and do not necessarily need to be densely arranged in the car frame structure 10, but are spaced apart to some extent. It is sufficient if it is provided. Therefore, the second car frame 12 in which the hole storage pipe 21 is housed may also be arranged with a certain interval in the car frame structure 10 as shown in FIG. In other words, any number of second car frames 12 in which the storage pipes 21 are accommodated can be arranged at any position in the car frame structure 10 as required.

Also, the insert member 40 passing through the hole storage pipe 21 is a reinforcing member 41 as shown in FIG. 4 or a drainage pipe 42 as shown in FIG. In order to prevent the mortar from spilling out when filling the inside with mortar, the reinforcing member 41 is preferably inclined so that the end on the far side of the ground (the right end in FIG. 4) is lowered. Moreover, the drainage pipe 42 is inclined so that the deep underground end (the right end in FIG. 5) becomes higher for drainage. Therefore, it is desirable that the hole storage pipe 21 is also inclined according to whether the insertion member 40 is the reinforcement member 41 or the drainage pipe 42 . Note that FIG. 2 shows an example in which the insert member 40 is a reinforcing member 41 .

Next, the configuration of the second car frame 12 will be described in detail. First, an example in which the hole storage pipe 21 is not inclined will be described.

FIG. 6 is a perspective view showing the configuration of the car frame structure according to the present embodiment, and FIG. 7 is a view showing another example of the front and rear mesh plates of the second car frame according to the present embodiment. In FIG. 7, (a) is a diagram showing the lower part, (b) is a diagram showing the upper part, and (c) is a diagram showing a state in which the lower part and the upper part are combined.

In the present embodiment, the bottom net plate 13, the side net plates 14, and the front and rear net plates 15, which serve as cage members, are members formed by forming wire rods made of metal such as carbon steel in a lattice or mesh shape. It may be a perforated plate such as a punching metal in which a large number of holes are punched in a metal plate, or a plate-like member having a large number of openings, and may be made of any material and of any shape. can be anything. Further, the mesh is approximately square with a side length of, for example, about 50 to 200 [mm], but may be of any size and any shape. Further, the bottom mesh plate 13 is, for example, a rectangular member with a widthwise dimension of about 500 to 2000 [mm] and a vertical dimension of about 1000 [mm]. It is a rectangular member with a longitudinal dimension of about 500 mm and a vertical dimension of about 1000 mm. Although it is a rectangular member with a dimension of about 500 to 2000 [mm], it may be of any size and any shape.

As shown in FIG. 6, the front and rear mesh plates 15 of the second car frame 12 are formed by combining a lower portion 15A as a first portion and an upper portion 15B as a second portion. The lower part 15A is formed with a lower concave part 16A as a first opening having a substantially U shape and an open top, and the upper part 15B is formed with a substantially U shape and an open bottom. An upper recessed portion 16B is formed as a second opening, and when the lower recessed portion 16A and the upper recessed portion 15B are combined, the lower recessed portion 16A and the upper recessed portion 16B are combined to have a size through which the storage tube 21 can pass. A pipe passage hole 19 is formed as a substantially circular pipe passage hole.

Here, one type of lower recess 15A having a lower recess 16A including a relatively large arc-shaped portion is prepared, and an arc-shaped portion having a diameter equal to or smaller than the diameter of the arc-shaped portion of the lower recess 16A is prepared. An upper portion 15B having an upper recess 16B including a portion is prepared. It is also possible to prepare a plurality of types of the upper portion 15B having arcuate portions with different diameters. By selectively combining the upper portion 15B with the lower portion 15A, the diameter of the pipe passage hole 19 can be adjusted. Specifically, by selecting the upper part 15B formed with the upper recessed part 16B including the arc-shaped part having a diameter matching the outer diameter of the pore storage tube 21, and combining the upper part 15B with the lower part 15A, The front and rear net plates 15 can be configured as pipe passage panels having pipe passage holes 19 of a size matching the outer diameter of the storage pipes 21 .

As a result, by using only one type of lower part 15A and selecting one of a plurality of types of prepared upper part 15B, the size suitable for storage tube 21 having a plurality of types of outer diameters can be obtained. The front and rear mesh plates 15 having the pipe passage holes 19 can be provided, and the number of parts can be reduced. It should be noted that the second portion having a different arcuate diameter does not necessarily have to be the upper portion 15B, and the second portion having a different arcuate diameter may be the lower portion 15A. For the sake of convenience, only the example in which the first portion is the lower portion 15A and the second portion is the upper portion 15B will be described. Also, there may be three or more types of second portions, but here, for convenience of explanation, the upper portion 15B as the second portion is formed with a relatively small upper concave portion 16B as shown in FIG. An example of an upper portion 15B formed with a large upper portion 15B and an example of an upper portion 15B formed with a relatively large upper recess 16B as shown in FIG. 7 will be described.

In the example shown in FIG. 6, a relatively large lower concave portion 16A is formed in the lower portion 15A. By combining the upper part 15B with the lower part 15A, it is possible to obtain the front and rear mesh plates 15 having the small-diameter pipe passage holes 19 of a size suitable for the outer diameter of the small-diameter hole storage pipes 21 . The small-diameter storage tube 21 is used, for example, to pass a drainage pipe 42 .

On the other hand, in the example shown in FIG. 7B, a relatively large upper concave portion 16B is formed in the upper portion 15B. The lower part 15A as shown in FIG. 7(a) is similar to the example shown in FIG. Then, as shown in FIG. 7(c), when the upper part 15B is combined with the lower part 15A, it has a large-diameter tube passage hole 19 of a size suitable for the outer diameter of the large-diameter storage tube 21. The front and rear mesh plates 15 can be obtained. The large-diameter tube 21 is used, for example, to pass the reinforcing material 41 .

As shown in FIG. 6, when assembling the car members to form the second car frame 12, first, the lower part 15A defining the front and rear of the second internal space 18 is attached. The lower part 15A is temporarily fixed to the front and rear net plates 15 or the side net plates 14 of the first car frame 11 adjacent to the left and right by a plurality of temporary fixing fittings 22 . After the pore-retaining pipe 21 was placed in the second internal space 18 so as to pass through the lower recessed portion 16A, an upper recessed portion 16B having a size matching the outer diameter of the pore-retaining pipe 21 was formed. The upper part 15B is combined with the lower part 15A. As a result, the front and rear mesh plates 15 as pipe passage panels having pipe passage holes 19 of a size matching the outer diameter of the hole storage pipe 21 are constructed. The upper part 15B and the lower part 15A that are combined with each other are fixed to the front and rear mesh plates 15 of the first car frame 11 adjacent to each other on the left and right by connecting coils 23 as connecting fittings. Specifically, as shown in FIG. 7C, the wires extending in the height direction at the left and right ends of the upper portion 15B and the lower portion 15A extend in the front and rear portions of the first car frame 11 adjacent to the left and right. It is fixed by connecting coils 23 to wire rods extending in the height direction at both the left and right ends of the net plate 15 . After that, the space around the storage pipe 21 in the second internal space 18 is filled with ground material such as crushed stone.

The hole storage pipe 21 is a pipe for securing a space through which the insertion member 40 can pass in the second internal space 18 filled with ground material such as crushed stone, and is made of, for example, vinyl chloride, carbon steel, or the like. The pipe may be of any kind of material and of any size.

Next, an example in which the hole storage pipe 21 is inclined will be described.

FIG. 8 is a view showing a first example of the front and rear net plate for tilting the hoard pipe of the second car frame in this embodiment, and FIG. FIG. 11 is a diagram showing a second example of a mesh plate; 8 and 9, (a) shows the lower part, (b) shows the upper part, and (c) shows the combined state of the lower part and the upper part.

Here, a case where the front and rear mesh plates 15 are a combination of the large mesh 25 and the small mesh 27 will be described. Incidentally, the bottom net plate 13 and the side net plate 14 may consist of only the large mesh 25 as in the example shown in FIG. It may be a combination. The large mesh 25 includes large-diameter wires 25a and large meshes 26 arranged in a square lattice. The large-diameter wire 25a is a steel material having a diameter of, for example, about 6 [mm], and the large mesh 26 has a substantially square shape with a side length of, for example, about 50 to 200 [mm]. The small mesh 27 includes small-diameter wires 27a and small meshes 28 arranged in a square lattice. The small-diameter wire 27a is a steel material having a diameter of, for example, about 1 [mm], and the small mesh 28 has a substantially square shape with a side length of, for example, about 10 to 40 [mm]. Thus, since the front and rear net plates 15 include fine meshes 27, the ground material such as crushed stone filled in the first internal space 17 and the second internal space 18 is composed of small-grained materials. Even if it is something, it will not spill out from the front and rear net plate 15 to the outside.

As shown in FIG. 8(a), the lower part 15A as the first part of the front and rear net plate 15 of the second car frame 12 consists only of the large net 25, and the lower part 15A is formed of the large net 25 only. The side recess 16A is generally U-shaped with an open top, but does not include an arcuate portion and is a rectangular recess as a whole.

As shown in FIG. 8(b), the upper part 15B as the second part of the front and rear mesh plate 15 of the second car frame 12 is a combination of the large mesh 25 and the small mesh 27. As shown in FIG. The large meshes 26 of the large meshes 25 have at least one maximum mesh 26a which is a wire-free portion that functions as a pipe passage hole forming portion. In the example shown in the figure, the portion of the large mesh 26 other than the maximum mesh 26a in the large mesh 25 is further divided into a long mesh 26b, a short mesh 26c and a medium mesh 26d. The sizes are set such that 26b>medium mesh 26d>short mesh 26c. The division of the long mesh 26b, the short mesh 26c, and the medium mesh 26d is not necessarily limited to this, and can be changed as appropriate. You can also

For example, when constructing the car frame structure 10 at the site where the embankment 31 is to be restored, the maximum mesh 26a is formed by cutting a part of the small mesh 27 to form pipe passage holes, as shown in FIG. 8(c). 19. As the reinforcing member 41 which is the insertion member 40, it is assumed that the diameter of the reinforcing member 41 is, for example, about 200 [mm] at maximum. is required to be 200 [mm] or more. Therefore, it is desirable that the length of one side of the maximum mesh 26a is set to about 250 [mm] at maximum. As a result, the tube passing holes 19 having diameters corresponding to various storage tubes 21 corresponding to the insertion members 40 having various diameters can be formed in the maximum mesh 26a. In addition, the front and rear mesh plates 15 are portions that receive earth pressure, which is the pressure of ground materials such as crushed stones filled in the second internal space 18. According to empirical rules, one side of the maximum mesh 26a If the length is about 250 [mm] or less, the small mesh 27 corresponding to the maximum mesh 26a can withstand the earth pressure without the large-diameter wire rod 25a of the large mesh 25 and break. I have nothing to do.

Moreover, it is desirable that the maximum mesh 26a be formed in contact with the upper end or the lower end of the upper portion 15B at the center portion in the width direction. In the example shown in FIG. 8(b), the maximum mesh 26a is positioned in contact with the upper end of the upper portion 15B in the upright posture. As a result, as shown in FIG. 8(c), when the upper part 15B and the lower part 15A are combined, the pipe passage hole 19 can be formed in a portion in contact with the upper end of the front and rear mesh plate 15. can. As in the example shown in FIG. 7(c), the large-diameter wire rods 25a extending in the height direction of the large mesh 25 at both the left and right ends of the upper portion 15B and the lower portion 15A are connected to the left and right adjacent second wire rods 25a. Connection coils 23 are fixed to large-diameter wire rods 25 a extending in the height direction at both left and right ends of the front and rear mesh plates 15 of one car frame 11 .

Then, when the upper portion 15B in which the maximum mesh 26a is in contact with the upper end of the upper portion 15B as shown in FIG. The mesh 26a is positioned in contact with the lower end of the upper portion 15B. Further, the lower concave portion 16A of the lower portion 15A is formed to reach the lower end of the lower portion 15A, as shown in FIGS. 8(a) and 9(a). As a result, as shown in FIG. 9(c), the pipe passage holes 19 are inserted into the front and rear mesh plates 15 in a state in which the upper portion 15B and the lower portion 15A in the inverted posture shown in FIG. 9(b) are combined. can be formed in a portion in contact with the lower end of the

Therefore, for example, the front and rear mesh plates 15, which are the front and rear mesh plates 15 as shown in FIG. 9(c), the front and rear mesh plates 15 having the tube passage hole 19 formed in the portion in contact with the lower end of the front and rear mesh plates 15 define the rear surface of the second internal space 18. When constructing the car frame structure 10 by using the second car frame 12 that has been made into the ground, if the second car frame 12 is oriented so that the front face faces the slope 33 side and the back face faces the deep side of the ground, The storage tube 21 can be arranged in an inclined posture so that the end on the middle and innermost side is lowered. When the second cage frame 12 is oriented such that the front surface faces the deep underground side and the rear surface faces the slope 33 side, the storage tube 21 is placed in an inclined posture so that the deep underground end is raised. can be arranged. This allows the pore storage pipe 21 to be inclined according to whether the insert member 40 is the reinforcing member 41 or the drain pipe 42 .

Next, the second car frame 12 in which the slanted hole storage pipe 21 is accommodated in the second internal space 18 will be described.

FIG. 10 is a diagram showing an example of a second car frame in which inclined storage pipes are accommodated in the second internal space according to the present embodiment. In the figure, (a) is a schematic side view, and (b) to (d) are schematic cross sectional views taken along line AA to CC in (a).

The front and rear mesh plates 15, which are the front and rear mesh plates 15 as shown in FIG. 8(c) and have the pipe passage hole 19 formed in the portion in contact with the upper end, define the front surface of the second internal space 18. A second front and rear mesh plate 15 having a tube passage hole 19 formed in a portion in contact with the lower end of the front and rear mesh plate 15 as shown in FIG. When the storage tube 21 is accommodated in the car frame 12, the storage tube 21 is tilted with respect to the substantially horizontal bottom net plate 13 as shown in FIG. The front and back of the frame 12 are arranged in an inclined posture so that the positions in the vertical direction are different. In order to stabilize the posture of the storage tube 21 and to reinforce the second car frame 12, it is desirable to dispose at least one intermediate mesh plate 15C inside the second internal space 18. Although FIG. 10 shows an example in which three intermediate net plates 15C are arranged, the number of intermediate net plates 15C can be set arbitrarily.

The intermediate mesh plate 15C has substantially the same structure as the lower part 15A of the front and rear mesh plates 15 shown in FIGS. , and has a substantially U-shaped shape with an open upper side, but does not include an arc-shaped portion, and has a rectangular concave portion 16C as a whole.

The storage pipes 21 housed in the second internal space 18 of the second car frame 12 are positioned in the recesses 16C of the intermediate mesh plates 15C, define the left and right sides of the recesses 16C, and extend in the height direction. The lateral displacement is regulated by the existing large-diameter wire 25a. In addition, by filling the space between the lower surface of the pore-retaining pipe 21 and the bottom net plate 13 with the filling material 35, the pore-retaining pipe 21 is supported from below, and the pore-retaining pipe 21 is position. As the filling material 35, materials similar to ground materials such as crushed stone can be used.

A preferred method for obtaining the second car frame 12 with the slanted storage tube 21 housed within the second interior space 18, as shown in FIG. 10(a), will now be described.

First, at least one intermediate mesh plate 15C is arranged inside the second internal space 18, and the upper part 15B is removed from the front and rear mesh plates 15 that define the front and rear surfaces of the second internal space 18. As shown in FIG. In this state, the pore-retaining pipe 21 is placed in the second internal space 18, and the space between the lower surface of the pore-retaining pipe 21 and the bottom mesh plate 13 is filled with the filling material 35, thereby 10(a)) is adjusted in the up-down direction, and the hole storage pipe 21 is tilted at a predetermined angle. After the inclination of the pore-storage tube 21 is set to a predetermined angle, a part of the small mesh 27 is placed at a position corresponding to the storage-pore tube 21 in each of the maximum meshes 26a of the upper part 15B attached to the front surface and the rear surface. A tube passage hole 19 is formed by cutting. Then, after the upper part 15B having the pipe passage hole 19 is attached to the lower part 15A of the front and rear surfaces to form the front and rear mesh plates 15, the second internal space 18 is filled with a ground material such as crushed stone. As a result, it is possible to obtain the second car frame 12 in which the slanted pore storage pipes 21 are accommodated in the second internal space 18 and which is filled with ground material such as crushed stone.

Next, a method for constructing the car frame structure 10 according to this embodiment will be described.

As shown in FIG. 2, the car frame structure 10 according to the present embodiment is constructed by assembling the car members so that the first car frame 11 and the second car frame 12 are arranged in a plurality of steps (in the example shown in FIG. 2, , 6 layers) are stacked. In this case, after assembling the cage materials to constitute the first stage and filling the ground material such as crushed stone, the cage materials are assembled thereon to constitute the second stage. When the first stage includes not only the first car frame 11 but also the second car frame 12, a storage pipe 21 is arranged in the second internal space 18 of the second car frame 12 to store the crushed stone. After filling the ground material such as the above, a basket material is assembled thereon to form the second stage. By repeating such an operation, the first car frame 11 and the second car frame 12 are stacked in a stepped manner.

FIG. 3 shows a car frame structure 10 under construction. A first car frame 11 and a second car frame 12 on the uppermost stage are constructed, and a storage pipe 21 is arranged in a second internal space 18 of the second car frame 12, and ground material such as crushed stone is filled. state is indicated.

In this way, by constructing the car frame structure 10 along the stepped portion of the embankment 31 that has been stepped, as shown in FIG. is completed. Furthermore, if it is necessary to improve drainage and earthquake resistance, after the main restoration is completed, the insertion member 40 is passed through the car frame structure 10 and placed in the embankment 31 as shown in FIG. 1(c-3). insert into The construction method adopted for inserting the insertion member 40 into the embankment 31 is, for example, the RRR-C construction method (see, for example, Non-Patent Document 2), but any type of construction method may be used.
http://www.rrr-sys.gr.jp/rrr-c.html.

In FIG. 2, a reinforcing member 41 is selected as the insert member 40 in order to improve the earthquake resistance, and the reinforcing member is inserted through the storage tube 21 arranged in the second internal space 18 of the second car frame 12. An example of inserting 41 into embankment 31 is shown. As described above, the front and rear mesh plates 15, which are the front and rear mesh plates 15 as shown in FIG. As shown in FIG. 9(c), the front and rear mesh plates 15 having the pipe passage hole 19 formed in the portion in contact with the lower end define the rear surface of the second internal space 18. When the second car frame 12 is used, and the front surface of the second car frame 12 faces the side of the slope 33 and the rear surface of the second car frame 12 faces the depth of the ground, as shown in FIG. The storage tube 21 can be arranged in an inclined posture so that the far side end is lowered. A reinforcing member 41 as shown in FIG. The reinforcing member 41 is inserted into the embankment 31 in an inclined posture so that the end on the far side of the ground is lowered in order to prevent mortar from spilling out when the mortar is filled inside. Since the reinforcing member 41 is inserted into the embankment 31 in this way, it is possible to exert a sufficient fixing force with the embankment 31, and the embankment 31, which is the ground, is effectively reinforced. Therefore, it is possible to prevent the slope 33 from collapsing during an earthquake, rainfall, or the like.

Also, instead of the reinforcing member 41, a drainage pipe 42 as shown in FIG. The drain pipe 42 is a perforated metal pipe having a large number of through holes formed in at least a portion of the cylindrical wall surface to be inserted into the embankment 31, and is arranged in the second internal space 18 of the second car frame 12. It is inserted into the embankment 31 through the hole storage pipe 21 that has been formed. As described above, the front and rear mesh plates 15, which are the front and rear mesh plates 15 as shown in FIG. As shown in FIG. 9(c), the front and rear mesh plates 15 having the pipe passage hole 19 formed in the portion in contact with the lower end define the rear surface of the second internal space 18. When the second cage frame 12 is used, and the front surface of the second cage frame 12 faces the deep side of the ground and the rear surface of the second cage frame 12 faces the side of the slope 33, the end of the deep underground side is raised. The storage tube 21 can be arranged in an inclined position. Then, the drainage pipe 42 can be slanted so that the end on the deep side of the earth is higher for drainage. Then, water in the embankment 31 enters the drain pipe 42 through the through hole and is discharged to the outside from the end of the drain pipe 42 that opens to the front and rear mesh plates 15 in front of the second car frame 12 . As a result, water can be discharged from the vicinity of the bottom surface of the embankment 31 . In this way, the pore water pressure in the embankment 31, which is the ground, can be reduced, and the slope 33 can be prevented from collapsing during an earthquake, rainfall, or the like.

Thus, in this embodiment, the car frame structure 10 comprises a plurality of car frames including at least one second car frame 12 that accommodates the storage tube 21 . The second car frame 12 has front and rear mesh plates 15 capable of forming pipe passage holes 19 through which the storage pipes 21 can pass, and the front and rear mesh plates 15 have lower concave portions 16A. and an upper portion 15B having a maximum mesh 26a capable of forming the tube passage hole 19 are combined, and the maximum mesh 26a is positioned in contact with the upper end of the upper portion 15B in an erect posture, The upper part 15B is combined with the lower part 15A of one of the front and back sides of the second car frame 12 in an upright position, and the upper part 15B is combined with the other lower part 15A in an inverted position. It is possible to form the pipe passage holes 19 so that the positions in the vertical direction are different on the front surface and the back surface. Therefore, the pipe passage holes 19 can be formed at the construction site of the car frame structure 10 or the like, and the pipes can be placed at arbitrary positions so that the front and rear sides of the second car frame 12 have different positions in the vertical direction. It is possible to form the passage hole 19 and accommodate the storage tube 21 in an inclined posture. And if it is used for restoration of the embankment 31, the main restoration can be performed without performing temporary restoration, and the embankment 31 can be restored easily and reliably in a short period of time.

In the present embodiment, the embankment 31 restoration method constructs the car frame structure 10 by piling up a plurality of car frames along the stepped portion of the embankment 31 that has been stepped. The plurality of cage frames include at least one second cage frame 12 that accommodates the storage pipe 21, and the second cage frame 12 has a front and rear portion capable of forming a pipe passage hole 19 through which the storage pipe 21 can pass. Front and rear mesh plates 15 are provided on the front and rear surfaces, and the front and rear mesh plates 15 are composed of a lower portion 15A having a lower concave portion 16A and an upper portion 15B having a maximum mesh 26a capable of forming a pipe passage hole 19. The maximum mesh 26a is positioned in contact with the upper end of the upper part 15B in the upright position, and the upper part 15B is combined with the lower part 15A on either the front or the back of the second car frame 12 in the upright position. The upper part 15B is combined with the other lower part 15A in an inverted posture, and the pipe passage holes 19 can be formed so that the front and rear surfaces of the second car frame 12 have different positions in the vertical direction. Therefore, in restoring the embankment 31, the main restoration can be performed without performing temporary restoration, and the embankment 31 can be restored easily and reliably in a short period of time.

It should be noted that this disclosure describes features of preferred exemplary embodiments. Various other embodiments, modifications and variations within the scope and spirit of the claims appended hereto will naturally occur to those skilled in the art upon reviewing the disclosure herein. be.

INDUSTRIAL APPLICABILITY The present disclosure can be applied to a car frame structure and an embankment restoration method using the same.

10 Car frame structure 12 Second car frame 15 Front and rear mesh plate 15A Lower part 15B Upper part 16A Lower recess 19 Tube passage hole 21 Storage tube 25 Large mesh 25a Large diameter wire rod 26a Extra large mesh 27 Small mesh 27a Small-diameter wire rod 31 Embankment 40 Insertion member 41 Reinforcement member 42 Drainage pipe

Claims (8)

A cage frame structure comprising a plurality of cage frames including at least one pipe containing cage frame for containing pipes,
The pipe housing basket frame has pipe passage panels on the front and back surfaces capable of forming pipe passage holes through which the pipes can pass,
The pipe passage panel is formed by combining a first portion having a first opening and a second portion having a pipe passage hole forming portion capable of forming the pipe passage hole,
The pipe passage hole forming portion is positioned in contact with the upper end of the second portion in the upright posture,
The first portion on one of the front surface and the back surface of the pipe housing basket frame is combined with the second portion in an upright posture, and the first portion on the other of the front surface and the back surface of the pipe housing basket frame is combined with the second portion in an inverted posture. A car frame structure characterized in that the pipe passage holes can be formed so that the positions in the vertical direction are different between the front face and the rear face of the pipe housing car frame. The second portion is formed by combining a large mesh having a large diameter wire and a small mesh having a small diameter wire. 2. A car frame structure according to claim 1, which is one of the large meshes closed by the mesh. 3. The car frame structure according to claim 2, wherein said pipe passage hole forming portion is the largest of said large meshes. 4. The car frame structure according to claim 2, wherein the pipe passage hole is formed by cutting a part of the mesh of the pipe passage hole forming portion. 5. The pipe according to any one of claims 1 to 4, wherein the pipes are accommodated in the pipe-accommodating cage frame in an inclined posture such that the front and the rear of the pipe-accommodating cage frame are vertically positioned differently. A cage frame structure. The car frame structure according to any one of claims 1 to 5, wherein the car frame can be filled with ground material and can be stacked in multiple stages. 7. The car frame structure according to claim 6, wherein the pipe prevents the inflow of the ground material and secures a space through which an insertion member inserted into the ground can pass. An embankment restoration method for constructing a car frame structure by stacking a plurality of car frames along a stepped portion of a stepped embankment, comprising:
The plurality of cage frames includes at least one pipe housing cage frame that houses a pipe,
The pipe housing cage frame has pipe passing panels on the front and back sides capable of forming pipe passing holes through which the pipes can pass,
The pipe passage panel is formed by combining a first portion having a first opening and a second portion having a pipe passage hole forming portion capable of forming the pipe passage hole,
The pipe passage hole forming portion is positioned in contact with the upper end of the second portion in the upright posture,
The first portion on one of the front surface and the back surface of the pipe housing basket frame is combined with the second portion in an upright posture, and the first portion on the other of the front surface and the back surface of the pipe housing basket frame is combined with the second portion in an inverted posture. The embankment restoration method is characterized in that the pipe passage holes can be formed so that the positions in the vertical direction are different between the front surface and the rear surface of the pipe housing basket frame.

Images