JP4409151B2 - Embankment reinforcement device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an embankment reinforcement device for firmly forming a wall surface of embankment, and more particularly, a wall surface reinforcing frame, which is a flexible structure, and an embankment reinforcement member are easily and quickly connected by a connecting member, and the embankment and the foundation. The present invention relates to an embankment reinforcement apparatus suitable for preventing the wall from protruding and damage to a connecting portion by the embankment reinforcement member following the ground subsidence.
[0002]
[Prior art]
Conventionally, a reinforced soil wall surface has been constructed as a retaining wall that strengthens the wall surface facing a road or residential land. Various methods for constructing such a reinforced soil wall surface have been proposed. A concrete block-like wall surface block is stacked up and down and left and right to construct a wall surface, and a grid-like reinforcing bar frame is substantially L-shaped. There is a direction in which a wall surface is constructed by a so-called flexible structure that connects a wall reinforcing frame formed by bending in a vertical and horizontal direction. The method of rigidly connecting the wall blocks is strong but lacks flexibility and is vulnerable to settlement of embankments and foundation ground. On the other hand, the construction method using the wall reinforcing frame for constructing the flexible structure has an advantage that it can moderately follow and buffer between the wall reinforcing frames against the settlement of the embankment or foundation ground.
[0003]
Therefore, to explain the general reinforced earth wall construction method for constructing a flexible structure, first, after excavating and leveling, the ink is drawn, and the work of tensioning, pile driving, etc. is performed to determine the installation position and slope of the wall reinforcement frame. To clarify. Thereafter, a plurality of wall reinforcement frames are provided on the left and right at predetermined positions, and the installation gradient is confirmed and connected to each other. Subsequently, a sheet-like embankment reinforcement member is fastened and laid on the embankment side of these wall surface reinforcement frames, and fixed with fixing pins or the like. The cut soil is sprinkled on the embankment reinforcing member and compacted flatly while rolling to construct an embankment of about 30 cm. By stacking this level of embankment one more time, the first embankment is constructed.
[0004]
Next, in order to construct a second-layer embankment, a embankment reinforcing member is connected to the embankment-side lower end portion of the wall reinforcing frame and laid on the first-layer embankment. The embankment reinforcing member plays a role of preventing settlement, movement, runoff, and the like of embankment and foundation ground, and a role of fixing the wall reinforcing member to the surface layer portion of the embankment. Then, the embankment reinforcing member is expanded and fixed with a fixing pin. Thereafter, the cut soil is sprinkled again on the embankment reinforcing member and compacted flatly while rolling, and a second layer is constructed by stacking approximately 30 cm of embankment. The same work is repeated for the third and subsequent layers to complete the bank wall of a predetermined height.
[0005]
[Problems to be solved by the invention]
The general reinforced earth wall construction method for constructing the flexible structure described above is highly flexible and safe for the settlement of the embankment after the embankment is completed. However, when the embankment is compacted during construction, particularly when the work of rolling the wall is performed, the earth pressure acting on the wall reinforcing frame becomes very high, and there is a problem that it is pushed out. That is, there is a so-called bulge problem that the wall surface protrudes. Although this is not a problem in safety, it is not preferable because it is anxious in appearance and the aesthetics are impaired.
[0006]
On the other hand, the wall reinforcement frame and the embankment reinforcement member are connected by a coupling member, but not only during the construction work of the reinforcement soil wall, but also after the construction, due to the pressure caused by the rolling of the embankment and the pressure due to the weight of the upper layer of the embankment In some cases, the embankment reinforcing member that has been laid horizontally is pulled downward over time. When the embankment reinforcing member is pulled downward, tensile stress or shearing stress is applied to the connecting portion between the wall surface reinforcing frame and the embankment reinforcing member, and there is a risk of breakage.
[0007]
On the other hand, in Japanese Patent Laid-Open No. 2001-131979, in a reinforced soil wall construction method using a concrete block-like wall block, the embankment reinforcing member can slide in the vertical direction in order to cope with the settlement of the embankment and the foundation ground. The invention described above is described. Specifically, a technique is described in which a connecting rod is attached to the back side of the wall block, and a connecting metal fitting attached to the embankment reinforcing member is slidably connected to the connecting rod. According to the present invention, when the embankment reinforcing member is displaced downward, the connecting bracket slides downward along the connecting rod in accordance with the displacement, so that a load applied to the connecting portion is reduced and damage to the connecting portion is prevented. It can be done.
[0008]
However, in the connection structure described in the above publication, when connecting using a connecting metal fitting, it must be fastened using bolts, nuts, or the like, which requires considerable labor and time for the connection work. Further, in order to slidably engage the connecting member, it is necessary to separately attach a connecting rod to the back surface of the wall reinforcing member, resulting in an increase in manufacturing work and cost increase.
[0009]
The present invention has been made in order to solve such problems, and does not use bolts or nuts for connecting the wall reinforcing frame and the embankment reinforcing member, and separately attaches a member such as a connecting rod. It is possible to complete the connection work very easily and quickly without any problems, and prevents the projecting from being squeezed out during or after construction, and follows the movement even if the embankment reinforcement member moves due to settlement of the embankment or foundation ground. It aims at providing the embankment reinforcement apparatus which can reduce the stress which arises in a connection part by carrying out or rotating.
[0010]
[Means for Solving the Problems]
The embankment reinforcement device according to the present invention is characterized in that the wall surface side frame of the wall reinforcement frame has a plurality of upper and lower bar-shaped portions arranged in parallel along the vertical direction of the embankment wall surface, and a plurality of the upper and lower bar-shaped portions intersect with each other. The horizontal U-shaped part which comprises the left and right bar-shaped parts arranged side by side, the connecting member is substantially U-shaped in a horizontal plane and slidably engages with the upper and lower bar-shaped parts, and the horizontal U-shaped part is opened. It is in the point comprised by the vertical U-shaped part which is integrally formed in one of the edge parts, and makes | forms a substantially U shape in a vertical surface. Here, the shape of the horizontal U-shaped portion and the vertical U-shaped portion of the connecting member is substantially U-shaped, and this shape includes a so-called hook shape in which the open end is curved inwardly. Defined as
[0011]
By adopting such a configuration, the connecting member is formed in a deformed S-shape consisting of a horizontal U-shaped portion and a vertical U-shaped portion, and is detachably hooked at both ends. Therefore, when connecting the wall reinforcing frame and the embankment reinforcing member, simply hook the horizontal U-shaped part on the upper and lower bar-shaped parts of the wall reinforcing frame and hook the vertical U-shaped part on the side end of the embankment reinforcing member. The connecting operation can be completed. Further, when the embankment reinforcing member moves up and down, the horizontal U-shaped portion of the connecting member slides along the upper and lower bar-shaped portions of the wall surface reinforcing frame, and can further rotate along the U-shape. The earth pressure generated on the wall surface is reduced to prevent the protrusion, and the load and stress applied to each connecting portion can be reduced to prevent the connecting portion from being damaged.
[0012]
Further, in the present invention, the upper and lower bar-shaped portions and the left and right bar-shaped portions in the wall reinforcing frame are overlapped so that the upper and lower bar-shaped portions are inside and the left and right bar-shaped portions are outside when used as reinforcement of embankment. It is preferable that it is welded. According to this, the earth pressure generated on the embankment side received by the upper and lower bar-shaped parts is dispersed by the left and right bar-shaped parts, and further, the welded part with the upper and lower bar-shaped parts even if subjected to earth pressure because the left and right bar-shaped parts are located outside Is difficult to peel off.
[0013]
Furthermore, in the present invention, of the upper and lower bar-shaped parts, the diameter of the upper and lower bar-shaped parts with which the connecting member slidably engages is formed larger than the diameter of the other upper and lower bar-shaped parts, and the diameter is 10 mm to 20 mm. It is desirable to be formed in the range. According to this, among the upper and lower bar-shaped parts, the strength is increased by forming the upper and lower bar-shaped parts that receive a large stress, particularly when the connecting member is hooked, so that the diameter thereof is increased. Moreover, if the diameter of the upper and lower bar-shaped portions is too large, the horizontal U-shaped portion of the connecting member will be formed larger, and the contact area between them will be larger. This increases the frictional resistance that resists sliding in the vertical direction. Therefore, by keeping the outer diameter of the upper and lower bar-shaped parts within a range of about 10 mm to 20 mm, the horizontal U-shaped part and the upper and lower bar-shaped parts of the connecting member It is formed so that the frictional resistance does not become too large.
[0014]
In the present invention, the embedding reinforcement member horizontally laid in the embankment is engaged with the vertical U-shaped portion of the connecting member, and the horizontal U-shaped portion is engaged with a substantially central position in the longitudinal direction of the upper and lower bar-shaped portions. It is characterized by. According to this, in order to attach the connecting member at a substantially central position in the vertical direction of the wall reinforcement frame, in addition to the resistance at the embankment side frame of the embankment reinforcement frame against the earth pressure applied to the wall reinforcement frame from the inside of the embankment, the center Resistance can be achieved even at the position, and so-called protrusion, in which the wall surface protrudes due to earth pressure, can be effectively prevented.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the embankment reinforcing device 1 according to the present invention will be described with reference to the drawings.
[0016]
FIG. 1 is a diagram showing a state in which a reinforced earth wall is constructed using a bank reinforcement device 1 according to an embodiment of the present invention, and FIG. 2 is a front view of one layer of the bank reinforcement device 1 as viewed from the front side. FIG. 3 is a perspective view of the connecting member 5 constituting the embankment reinforcing device 1.
[0017]
As shown in FIGS. 1 to 3, the embankment reinforcement device 1 in this embodiment includes a wall surface reinforcement frame 2 and a bank reinforcement member 6 connected to the wall surface reinforcement frame 2 via a connection member 5. . The wall reinforcing frame 2 is stacked vertically and horizontally along the wall surface of the embankment, and mainly protects the embankment wall surface firmly. The embankment reinforcement member 6 is laid in layers at predetermined intervals in the embankment, and mainly prevents sinking, movement, and runoff of the embankment, and prevents the wall reinforcement frame 2 from protruding from the wall surface. It has become.
[0018]
The wall surface reinforcing frame 2 includes a wall surface side frame 3 formed along the wall surface, and a banking side frame 4 extending horizontally from the lower end portion of the wall surface side frame 3 to the banking side. In the present embodiment, the wall surface side frame 3 and the embankment side frame 4 are formed by connecting metallic thin bars in a lattice shape at predetermined intervals and bending them at predetermined positions according to the design gradient. In the wall surface side frame 3, a plurality of metal thin bars arranged side by side along the vertical direction of the wall surface are defined as upper and lower bar portions B 1, and a plurality of metal thin bars arranged in parallel so as to be orthogonal to these upper and lower bar portions B 1. Let it be a left and right bar-shaped part B2. In the present embodiment, the embankment-side frame 3 is formed by extending the upper and lower bar portions B1 at appropriate positions, and the left and right bar portions B2 are connected to the upper and lower bar portions B1. The metal rod used for the wall reinforcing frame 2 is lightweight and is formed of a metal material having suitable strength, elasticity, rust prevention, and other properties suitable for application to wall materials.
[0019]
Further, as shown in FIGS. 3 and 4, the upper and lower bar portions B1 and the left and right bar portions B2 of the wall reinforcing frame 2 are arranged on the wall surface of the embankment so that the upper and lower bar portions B1 are inside the left and right bar shapes. It is overlapped and welded so that part B2 may become the outside. According to this, the earth pressure from the embankment side is mainly received by the upper and lower bar portions B1, and the earth pressure is distributed by the left and right bar portions B2. At this time, since the left and right bar-like portions B2 are welded so as to be outside, the welded portion becomes the back side of the upper and lower bar-like portions B1 that receive earth pressure, and even if the welded portion receives earth pressure, it becomes difficult to peel off. Yes.
[0020]
Moreover, the depth length of the embankment side frame 4 is formed to a length that can resist the pressure generated from the embankment side to the wall surface side by the rolling operation when the wall surface reinforcing frame 2 is arranged in the embankment. Even if it does not attach a support member to a wall surface reinforcement frame, it can stand now stably.
[0021]
Further, among the upper and lower bar portions B1, the diameter of the upper and lower bar portions B1a with which the connecting member 5 is slidably engaged is formed larger than the diameter of the other upper and lower bar portions B1, and the diameter is about 10 mm. It is formed in a range of ˜20 mm. This is to ensure strength while reducing the weight and cost of the member, and the upper and lower bar portions B1a with which the connecting member 5 is engaged have a greater force than the other members via the embankment reinforcing member 6. Since it acts, it is formed in a size that can resist it. However, if it is too thick, the contact area with the connecting member 5 is increased and the frictional resistance is increased, which prevents the connecting member 5 from sliding up and down. Therefore, in this embodiment, the diameter of the connecting upper and lower bar portions B1a is 13 mm, and the diameter of the other upper and lower bar portions B1 is 6 mm. Thereby, sufficient tolerance can be acquired also with respect to the tensile stress received through the connection member 5 with the settlement of the embankment mentioned later.
[0022]
In addition, in this embodiment, the resistance performance with respect to the earth pressure of embankment is equalize | homogenized by making all the space | interval of each upper-and-lower bar-shaped part B1 and each left-right bar-shaped part B2 into equal intervals. The upper and lower bar portions B1a for connection are welded adjacent to the upper and lower bar portions B1 having a diameter of 6 mm arranged at equal intervals.
[0023]
As shown in FIG. 1, a vegetation mat 10 is attached to the wall surface side frame 3 of the wall surface reinforcing frame 2 in order to improve resistance to earth pressure and to harmonize with a natural landscape.
[0024]
Next, as shown in FIG. 3 and FIG. 4, the connecting member 5 has a substantially U shape in a horizontal plane and a horizontal U shape portion 5 a that is slidably engaged with the upper and lower rod-like portion B 1, and the horizontal U shape portion 5 a. The vertical U-shaped portion 5b is formed integrally with one of the open ends and is substantially U-shaped on the vertical surface. In other words, it has a shape obtained by rotating one end of a substantially S-shaped metal member by 90 degrees. By forming into such a shape, the connection with the wall surface reinforcement frame 2 and the embankment reinforcement member 6 becomes very simple, and the operation can be completed quickly.
[0025]
On the other hand, the embankment reinforcing member 6 that engages the embankment side of the connecting member 5 is formed in a net shape and a lattice shape using a material made of a reinforcing fiber, a polymer material, a synthetic resin, or the like. The side end portion of the embankment reinforcing member 6 that engages with the connecting member 5 is folded back to form a bag shape, and a long hook metal rod 9 is inserted inside the bag shape. The vertical U-shaped portion 5 b of the connecting member 5 is engaged with the engaging metal rod 9.
[0026]
Next, a procedure for constructing a reinforced soil wall by the embankment reinforcing device 1 of the present embodiment will be described with reference to FIG.
[0027]
As shown in FIG. 1, when constructing a reinforced earth wall by the embankment reinforcing apparatus 1 in the present embodiment, first, at a desired site, cutting of vegetation, removal of stumps by excavation, removal of topsoil, pressurization of rollers, etc. Leveling flatly while rolling by means. This work improves finishing accuracy and shortens the construction period.
[0028]
After the above leveling work, the construction position of each layer S1 to S6 of the embankment is confirmed. In this work, the installation position and the wall slope are clarified by applying water thread for each layer, drawing ink, staking, and pile driving. As a result, work efficiency is improved, and the finish of the reinforced soil wall surface becomes even more beautiful.
[0029]
Next, the embankment reinforcing device 1 is placed on the base 11 while confirming that the gradient of the wall surface reinforcing frame 2 and the design gradient of the reinforcing earth wall coincide. And the wall surface reinforcement frame 2 is fixed to the base | substrate 11 with the fixing pin 7 formed with steel etc. FIG. Here, as shown in FIG. 1, the head of the fixing pin 7 has a hook shape, and the wall is reinforced by striking it in a state of being hooked on the upper and lower bar portions B1 or the left and right bar portions B2 of the embankment side frame 4. 2 is fixed to the base 11.
[0030]
In the present embodiment, the slope drainage material 8 is laid on the upper surface side of the embankment side frame 4 after the wall surface reinforcing frame 2 is placed and fixed. Thereby, especially in the ground with a lot of spring water, it is possible to prevent an increase in the moisture content of the bank and damage to the bank frame 4 due to the spring water.
[0031]
Next, a banking material such as excavated soil is spread out on the back side of the wall surface side frame 3 and spread. The amount of the embankment material used at this time takes into account the finished thickness of each embankment layer after compaction. Usually, an embankment layer having a height of about 30 cm is formed and repeatedly stacked. Further, the spreading is performed from the wall reinforcing frame 2 side to the inside of the embankment, and the finishing accuracy and the stability of the embankment are improved by leveling so as to be flat.
[0032]
The embankment material spread and spread as described above is compacted flatly and uniformly so as to be free of irregularities while being pressed by a pressing means such as a roller. Thereby, the first layer S1 of the embankment is formed. Since this compaction work has a significant effect on the stability and durability of the reinforced soil walls, the compaction rules are set so as to satisfy the soil constants used in the design, and this is done very carefully under those rules. It is preferable.
[0033]
After the formation of the embankment layer S1, the connecting member 5 is engaged with the upper and lower bar portions B1a of the wall reinforcing frame 2. Specifically, as shown in FIGS. 1 and 4, the horizontal U-shaped portion 5a of the connecting member 5 is interposed between two left and right rod-like portions B2 that intersect in the vicinity of the substantially central portion of the vertical length of the upper and lower rod-like portion B1a. Hook. And in this embodiment, as shown to (a) of FIG. 4, the connection member 5 engages with the upper-and-lower rod-shaped part B1a in the state which contact | connects the upper left-right rod-shaped part B2a substantially. As a result, as shown in FIG. 4B, it is possible to slide downward to follow the settlement of the embankment.
[0034]
On the other hand, the embankment reinforcing member 6 is engaged with the vertical U-shaped portion 5 b of the connecting member 5. As the embankment reinforcing member 6, a material having sufficient tensile strength characteristics, creep characteristics, impact resistance, friction characteristics with the embankment material, weather resistance, chemical resistance, cold resistance, heat resistance and flexibility is appropriately selected. It is preferable. In the present embodiment, a mesh sheet made of reinforced resin is used.
[0035]
The connection between the connecting member 5 and the embankment reinforcing member 6 is performed via a hooking metal rod 9. Specifically, the edge of the embankment reinforcing member 6 is wound around the hook metal rod 9, and the vertical U-shaped portion 5 b is hooked on the hook metal rod 9 through the mesh of the embankment reinforcing member 6. Thereby, the connection member 5 and the embankment reinforcement member 6 can be connected by a simple means. Subsequently, the embankment reinforcing member 6 is laid on the embankment layer S1, and the fixed pin 7 is driven into the embankment layer S1 in a stretched state and fixed.
[0036]
After that, the embankment material is spread out on the embankment reinforcing member 6, spread, and rolled to form the second layer S2. Then, a new wall reinforcing frame 2 is arranged at the upper end of the wall reinforcing frame 2 and joined by a joining member (not shown), and then the above-described operations are repeated to form the third layer S3 to the sixth layer S6 and the banking layer sequentially. And build a reinforced soil wall.
[0037]
As described above, the reinforced soil wall surface constructed using the embankment reinforcement device 1 according to the present embodiment is configured so that the connecting member 5 moves up and down following the settlement even if the embankment or foundation ground sinks during or after the construction. Sliding in the direction and absorbing the distortion can reduce the protrusion of the wall surface. In addition, since the connecting member 5 slides up and down along the upper and lower bar portions B1a and rotates along the U-shape, the tensile stress and shear stress received by embankment and ground subsidence are reduced, and the connecting portion is damaged. Can be prevented.
[0038]
Further, the connecting member 5 is composed of a horizontal U-shaped portion 5a and a vertical U-shaped portion 5b, so that the engaging operation with the upper and lower bar portions B1a of the wall surface reinforcing frame 2 and the engaging operation with the embankment reinforcing member 6 can be performed easily and quickly. Can proceed.
[0039]
Furthermore, since the embankment reinforcing member 6 is hooked at a substantially central portion in the longitudinal direction of the upper and lower bar portions B1 of the wall surface side frame 2, the embankment at the lower end portion of the wall surface reinforcement frame 2 against the earth pressure from the embankment side. It can resist at the center position together with the side frame 4, and in particular, against the earth pressure generated by the rolling work near the wall surface, the protrusion of the wall surface can be surely suppressed, and a stable embankment can be constructed.
[0040]
In addition, each structure in this embodiment is not limited to embodiment mentioned above, It can change suitably.
[0041]
For example, in the present embodiment, in order to secure the strength while suppressing the cost, the wall reinforcing frame 2 is of the same standard regardless of the position. However, as the wall surface reinforcing frame 2 arranged in the lower layer, one having a low wall surface side frame 3 or one having larger diameters of the upper and lower bar parts B1 and the left and right bar parts B2 is adopted. Also good. Thereby, it is possible to realize a high load resistance with respect to the earth pressure of the embankment that is further increased on the lower layer side.
[0042]
Further, the horizontal U-shaped portion 5a and the vertical U-shaped portion 5b of the connecting member 5 in this embodiment are formed in a hook shape that is curved inward, although the U-shaped open end portion is straight open. By doing so, it is good also as a shape where engagement is hard to come off. Furthermore, a stopper member that is biased by a spring and closes the open end can be attached to the open end so that the structure is more difficult to drop off.
[0043]
Further, in this embodiment, the embankment reinforcing member 6 is a net-like or lattice-like material using a material made of reinforcing fiber, polymer material, synthetic resin, etc., but is not limited to this, and the connecting member 5 Various general-purpose embankment reinforcing members 6 can be used as long as the vertical U-shaped portions can be engaged with each other.
[0044]
In addition, the upper and lower bar portions and the left and right bar portions of the wall reinforcing frame in the present embodiment use round bars having a circular cross section, but the present invention is not limited thereto, and square bars having a rectangular cross section may be used as appropriate. May be.
[0045]
【The invention's effect】
As described above, according to the present invention, the connecting operation between the wall surface reinforcing member and the embankment reinforcing member can be performed extremely simply and quickly without using bolts or nuts or separately attaching a member such as a connecting rod. It can be completed and prevented from sticking out during or after construction, and even if the embankment reinforcement member moves due to settlement of the embankment or foundation ground, it will follow its movement or rotate to the connection part The generated tensile stress and shear stress can be reduced.
[Brief description of the drawings]
FIG. 1 is a view showing a state in which a reinforced earth wall is constructed using a bank reinforcement device according to the present invention.
FIG. 2 is a front view of one layer of the embankment reinforcing device according to the present invention as seen from the front side.
FIG. 3 is a perspective view of a connecting member constituting the embankment reinforcing device according to the present invention.
FIG. 4 is a perspective view showing a state (a) in which the connecting member of the embankment reinforcing device according to the present invention is engaged at the upper end and a state (b) engaged at the lower end.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Embankment reinforcement apparatus 2 Wall surface reinforcement frame 3 Wall surface side frame 4 Embankment side frame 5 Connection member 6 Embankment reinforcement member 7 Fixing pin 8 Slope drainage material 9 Metal rod 10 for latching Vegetation mat 11 Base B1 Vertical bar-shaped part B1a Engagement with a connection member Upper and lower bar parts B2 Left and right bar parts B2a Upper left and right bar parts B2b Lower left and right bar parts

Claims (4)

Wall surface reinforcement composed of a wall surface frame formed along the wall surface in order to strengthen the wall surface of the embankment, and a embankment frame extending horizontally from the lower end of the wall surface frame to the embankment side. The embankment reinforcing apparatus having a frame and a connecting member for connecting the wall reinforcing frame and the embankment reinforcing member laid on the embankment side,
The wall surface side frame of the wall reinforcing frame includes a plurality of upper and lower bar-shaped portions arranged in parallel along the vertical direction of the wall surface, and a plurality of left and right bar-shaped portions arranged in parallel so as to intersect with the upper and lower bar-shaped portions. It consists of
The connecting member is substantially U-shaped in a horizontal plane, slidably engages with the upper and lower bar-shaped parts, and is substantially in contact with the upper one of the left and right bar-shaped parts that intersect the upper and lower bar-shaped parts during construction. The horizontal U- shaped portion that engages with the rod-shaped portion, and the vertical U-shaped portion that is formed integrally with one of the open ends of the horizontal U-shaped portion and has a substantially U-shape on the vertical surface. The embankment reinforcement device.   2. The upper and lower bar-shaped portions and the left and right bar-shaped portions in the wall reinforcing frame according to claim 1 are overlapped so that the upper and lower bar-shaped portions are on the inner side and the left and right bar-shaped portions are on the outer side when used as reinforcement for embankment. The embankment reinforcement device characterized by being welded.   In Claim 1 or Claim 2, the diameter of the upper-and-lower bar-like part which the above-mentioned upper-and-lower bar-like part engages so that the connecting member can slide is formed larger than the diameter of the other upper-and-lower bar-like part, and the The embankment reinforcing apparatus, wherein the diameter is in a range of about 10 mm to 20 mm. In any one of Claims 1-3, while making the embankment reinforcement member laid horizontally in embankment to the vertical U-shaped part of the said connection member, a horizontal U-shaped part in the longitudinal direction of the said up-and-down bar-shaped part The embankment reinforcement apparatus characterized by engaging with the upper left and right bar-shaped portions of the two left and right bar-shaped portions intersecting at a substantially central position.

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