Reinforcing member

Abstract

To provide a novel reinforcing member to be installed between a structure and the ground near the structure.SOLUTION: A reinforcing member is disposed between a vertical wall and a slope, and includes a filler disposed in the space between the vertical wall and the slope, and a first anchor extending from the vertical wall to an inside of the filler.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a reinforcing member. [Background technology]

[0002] Patent Document 1 discloses a filler filled between the deck of a bridge and the substructure of the deck. This filler is filled around a building installed in the space below the deck. The filler reinforces the deck of the bridge while protecting the building. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-041499 A Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned filler is not limited to being filled between the deck and substructure of a bridge, but may also be filled between a structure and the ground on which the structure is built. In such cases, the filler may peel off from the surrounding structure or ground and deform due to aging or earthquakes. Therefore, there is a demand for preventing such deformation of the filler.

[0005] An object of the present invention is to provide a novel reinforcing member to be provided between a structure and the ground near the structure. [Means for solving the problem]

[0006] A reinforcing member according to one embodiment of the present disclosure is a reinforcing member arranged between a vertical wall and a sloped surface, and includes a filler arranged in the space between the vertical wall and the sloped surface, and a first anchor extending from the vertical wall to an inside of the filler.

[0007] A reinforcing member according to another aspect of the present disclosure is a reinforcing member arranged between a vertical wall and a horizontal wall that is continuous with and intersects the vertical wall, and includes a filler arranged in the space between the vertical wall and the horizontal wall, a first anchor extending from the vertical wall to an inside of the filler, and a second anchor extending from the horizontal wall to an inside of the filler. Effect of the Invention

[0008] The present disclosure can provide a novel reinforcing member that is provided between a structure and the ground near the structure. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a cross-sectional view showing a reinforcing member according to the first embodiment of the present disclosure. [Diagram 2] FIG. 2 is a side view illustrating a schematic configuration of a reinforcing member according to the first embodiment of the present disclosure. [Diagram 3] 4 is an explanatory diagram showing a load applied to a reinforcing member of the present disclosure. [Figure 4] FIG. 6 is a cross-sectional view showing a reinforcing member according to a second embodiment of the present disclosure. [Diagram 5] FIG. 11 is a top view illustrating a schematic configuration of a reinforcing member according to a second embodiment of the present disclosure. [Figure 6] 6A to 6C are explanatory views showing a method for manufacturing a reinforcing member according to a second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings.

[0011] First Embodiment As shown in FIG. 1, a reinforcing member 1 according to a first embodiment of the present disclosure is provided between a bridge 20 and an embankment 30 behind the bridge 20 to reinforce the bridge 20.

[0012] The bridge 20 comprises a deck 21 and a substructure 22 that supports the deck 21. The substructure 22 has a pier 22a extending vertically (in the direction of the arrow Z in FIG. 1) and a footing 22b, which is a foundation portion provided on the lower part of the pier 22a. The footing 22b is formed to be wider than the pier 22a and extends in a direction intersecting with the pier 22a.

[0013] The embankment 30 has a slope S, which is an inclined surface facing the back surface of the bridge 20. The slope S is formed so as to satisfy the angle of repose, which is the maximum angle of a slope at which the embankment can stand stably without collapsing.

[0014] The reinforcing member 1 is disposed in a space 10 between the vertical wall W1 and the slope S. The vertical wall W1 is the back surface of the pier 22a.

[0015] The reinforcing member 1 includes a filler 2, a plate member 3 disposed on an upper portion of the filler 2, and a first anchor 4.

[0016] The filler 2 is a foamed resin molded body that is filled into the space 10. The filler 2 of the present embodiment is a so-called foamed-in-place resin molded body that is foamed by injecting and mixing a liquid foaming raw material into the space 10 at the construction site of the reinforcing member 1.

[0017] A foam that is foamed on-site (hereinafter referred to as an in-situ foam) is foamed by injecting liquid foaming raw material into a space 10 surrounded by the ground or existing structures at the construction site. Furthermore, the in-situ foam can be extruded and shaped by spraying. Therefore, the in-situ foam can be foamed freely according to the shape of the space 10. This gives the in-situ foam excellent workability during construction and ability to follow the shape of the space 10.

[0018] Examples of the in-situ foam that can be used include formed cement banking (FCB), stabilized light soil (SLS), foamed polyurethane resin, etc. In particular, polyurethane resin is preferred in terms of workability and light weight during construction.

[0019] The filler 2 of this embodiment is a hard polyurethane foam that is foamed in situ by mixing two liquids, a polyol component and a polyisocyanate component. The polyol component is, for example, a polyol having a group that reacts with isocyanate, an amine compound, etc., and further includes a catalyst, a flame retardant, a foaming agent, etc. The foaming agent is not particularly limited, but may include water, carbon dioxide, and a hydrocarbon, etc. It is preferable to use a polyol that reacts with isocyanate, an amine compound, and water as raw materials from the viewpoint of adhesion to a structure surrounding the foaming space.

[0020] The filler 2 may be formed by combining a plate-shaped or block-shaped foam and an in-situ foam. In particular, when the volume of the space 10 is large, a plate-shaped or block-shaped foam may be placed in the space 10, and the in-situ foam may be discharged and molded around it. It is preferable that the in-situ foam is discharged and molded in the area in contact with the bridge 20 and the embankment 30.

[0021] As the plate-shaped or block-shaped foam, a foamed resin molded product obtained by foaming synthetic resin such as polystyrene (PS), polyethylene (PE), polypropylene (PP), polyurethane (PU), polyvinyl chloride (PVC), etc. can be used. Such a foamed resin molded product has a density of 30 kg / m 3 ~70kg / m 3 (JIS A9511), compressive strength 60kN / m 2 More than 60kN / m 2 to 200 kN / m 2 (JIS A9511) degree.

[0022] The filler 2 is formed of rigid polyurethane foam in the space 10 between the bridge 20 and the embankment 30, is formed integrally with the bridge 20 or the embankment 30, and is in contact with the substructure 22. The above-mentioned spray discharge process can also be divided into multiple injections, and the foamed resin molded body can be layered in multiple layers.

[0023] The plate member 3 is disposed on top of the filler 2. The plate member 3 of this embodiment is bridged between the bridge 20 and the embankment 30, and forms an approach section which is a road surface leading to the bridge 20. The plate member 3 may have a roadbed which covers the top of the filler 2, and a pavement which covers the roadbed and forms a flat road surface. The roadbed may be formed by compacting cement, lime, earth and sand, etc. The pavement may be formed of asphalt or concrete.

[0024] The first anchor 4 extends from the vertical wall W1 toward the inside of the filler 2. In this embodiment, the first anchor 4 has a first rod member 41, a return portion 42, and a fixing portion 43.

[0025] The first rod member 41 has a first end 41a, a second end 41b, and an intermediate portion 41c between the first end 41a and the second end 41b. The first end 41a is one end of the first rod member 41 and is disposed inside the substructure 22. The second end 41b is the end of the first rod member 41 opposite to the first end 41a and is disposed inside the filler 2. The vertical wall W1 is disposed between the first end 41a and the second end 41b in the direction in which the first rod member 41 extends (the direction of the arrow X in FIG. 1). The first rod member 41 does not penetrate the filler 2 in the length direction (the direction of the arrow X in FIG. 1) and does not reach the slope S.

[0026] The first rod member 41 in this embodiment is a reinforcing bar with a first end 41a and a second end 41b threaded. The first end 41a of the first rod member 41 is inserted into an insert provided in the pier 22a and fixed to the pier 22a with an adhesive. In this way, the first rod member 41 is disposed at W1. Not limited to this, the first end 41a may be provided with a hook shape to prevent it from coming off the pier 22a.

[0027] The return portion 42 is a plate disposed at the second end portion 41b of the first bar member 41. The return portion 42 is disposed inside the filler 2. The return portion 42 in this embodiment is a circular steel plate. However, the shape of the return portion 42 is not limited to this, and may be an elliptical shape, a polygonal shape including a square, or the like.

[0028] The fixing portion 43 fixes the barb portion 42 near the second end portion 41b of the first rod member 41. The fixing portion 43 in this embodiment is a nut and a washer.

[0029] FIG. 2 is a schematic diagram showing the positions of a plurality of first anchors 4 arranged on the vertical wall W1. As shown in FIG. 2, the plurality of first anchors 4 are arranged at predetermined intervals in the width direction (arrow Y direction in FIG. 2) and height direction (arrow Z direction in FIG. 2) of the vertical wall W1. The first anchors 4 are arranged so that the interval between adjacent first anchors 4 is smaller at the upper part of the vertical wall W1 than at the lower part of the vertical wall W1. For example, the interval between adjacent first anchors 4 in the up-down direction (arrow Z direction in FIG. 2) may be smaller at the upper part of the vertical wall W1 than at the lower part of the vertical wall W1. Also, the interval between adjacent first anchors 4 in the left-right direction (arrow Y direction in FIG. 2) may be smaller at the upper part of the vertical wall W1 than at the lower part of the vertical wall W1. That is, the density of the first anchors 4 arranged on the vertical wall W1 is higher at the upper part of the vertical wall W1 than at the lower part of the vertical wall W1.

[0030] In this embodiment, the multiple first anchors 4 are arranged in the up-down direction of the vertical wall W1 (the direction of arrow Z in FIG. 2) such that the interval h1 between the first anchors 4 arranged at the top of the vertical wall W1 and adjacent to each other in the up-down direction is narrower than the interval h2 between the first anchors 4 arranged at the bottom and adjacent to each other in the up-down direction. Furthermore, the interval between the first anchors 4 adjacent to each other in the up-down direction becomes narrower toward the top of the vertical wall W1.

[0031] In this embodiment, the first anchors 4 are arranged at equal intervals in the width direction (direction of arrow Y in FIG. 2) along the width direction of the vertical wall W1. However, the first anchors 4 may be arranged sparsely or densely in the width direction of the vertical wall W1, or may be arranged at equal intervals across the height and width directions of the vertical wall W1.

[0032] As described above, the reinforcing member 1 of this embodiment includes the first anchor 4 that extends into the filler 2. The reinforcing member 1 receives a load from a heavy object such as a vehicle passing over the bridge 20. FIG. 3 is an explanatory diagram that shows a schematic diagram of the load received by the reinforcing member 1 and a reinforcing member 201 of a second embodiment described later. In FIG. 3, the first anchor 4 is omitted. As shown in FIG. 3, the filler 2 of the reinforcing member 1 receives a load P from a vehicle C traveling through the approach section leading to the bridge 20. In particular, the filler 2 at the connection point A between the bridge 20 and the approach section receives a load so as to be compressed downward (in the opposite direction to the arrow Z in FIG. 3) (in the direction of compression). Therefore, a step may occur at the connection point A between the bridge 20 and the approach section.

[0033] In addition to the repeated loads from heavy objects such as vehicles as described above, the reinforcing member 1 may be subjected to horizontal inertial forces (in the direction of arrow X in Fig. 1) due to earthquakes. In this case, due to the difference in behavior between the filler 2 and the substructure 22 of the bridge 20, the reinforcing member 1 receives a force in the direction away from the vertical wall W1 (in the direction of arrow X in Fig. 3) as shown by the black arrow in Fig. 3, that is, a force that tries to peel off the filler 2 from the vertical wall W1.

[0034] The first anchor 4 extends from the vertical wall W1 to the inside of the filler 2. As a result, the first anchor 4 can suppress deformation of the filler 2 against a force that tries to peel the filler 2 from the vertical wall W1. Therefore, the first anchor 4 can prevent the filler 2 from peeling off from the vertical wall W1. As a result, the reinforcing member 1 can prevent a step from occurring at the connection point A between the bridge 20 and the approach section.

[0035] Furthermore, a plurality of first anchors 4 are provided on the vertical wall W1, and are arranged such that the interval between adjacent first anchors 4 in the up-down direction is smaller at the upper part of the vertical wall W1 than at the lower part. This makes it possible for the first anchors 4 to more reliably suppress deformation of the filler 2 near the connection point A where the force attempting to peel the filler 2 from the vertical wall W1 is at its maximum.

[0036] Moreover, the first anchor 4 has a barbed portion 42. As a result, the barbed portion 42 acts to prevent the filler 2 from slipping out, and can suppress deformation of the filler 2.

[0037] Furthermore, the reinforcing member 1 includes a plate member 3 disposed on the upper part of the filler 2. The plate member 3 covers the upper part of the filler 2. The plate member 3 can protect the upper part of the filler 2 from deterioration due to ultraviolet rays, flying stones, and the like.

[0038] <Second embodiment> Next, the second embodiment of the present disclosure will be described focusing only on the differences from the first embodiment. As shown in Fig. 4, the reinforcing member 201 of the second embodiment differs from the reinforcing member 1 of the first embodiment in that a filler 202 is disposed between the vertical wall W1 and the horizontal wall W2, and in that a second anchor 205 is further provided.

[0039] The horizontal wall W2 is continuous with the vertical wall W1 and intersects with the vertical wall W1. In this embodiment, the horizontal wall W2 is the upper surface of the footing 22b. The filler 202 is disposed in a space 210 surrounded by the vertical wall W1, the horizontal wall W2, the slope S, and the plate member 3.

[0040] The second anchor 205 of the reinforcing member 201 extends from the lateral wall W2 toward the space 210. That is, the reinforcing member 201 of this embodiment includes a first anchor 4 and a second anchor 205 that extend in directions intersecting each other.

[0041] In this embodiment, the second anchor 205 is simply the second rod member 251. However, the present invention is not limited to this, and the second anchor 205 may have a barb fixed to the second rod member, similar to the first anchor 4. The second anchor 205 does not penetrate the filler 202 in the height direction (the direction of the arrow Z in FIG. 4) and does not reach the plate member 3.

[0042] Fig. 5 is a schematic diagram showing the positions of the multiple second anchors 205 arranged on the lateral wall W2. As shown in Fig. 5, the multiple second anchors 205 are arranged at predetermined intervals in the length direction (arrow X direction in Fig. 5) and width direction (arrow Y direction in Fig. 5) of the lateral wall W2. The multiple second anchors 205 in this embodiment are arranged at equal intervals in both the length direction and the width direction.

[0043] The intervals between the multiple second anchors 205 may be different in the length direction and width direction of the lateral wall W2.

[0044] The first anchor 4 of this embodiment may have the same length as the second anchor 205. More specifically, the length of the first rod member 41 of the first anchor 4 protruding from the vertical wall W1 may be the same as the length of the second rod member 251 protruding from the horizontal wall W2. This allows the contact areas between the first anchor 4 and the filler 202, and between the second anchor 205 and the filler 202 to be approximately equal. Therefore, the reinforcing member 201 allows the frictional forces that the filler 202 receives from the first anchor 4 and the second anchor 205 to be approximately equal. As a result, a bias occurs in the reaction force that the filler 202 receives from either the first anchor 4 or the second anchor 205 against the filler 202 that is about to deform under the load P (see FIG. 3), and this prevents the filler 202 from being unexpectedly deformed.

[0045] Moreover, the first anchor 4 may be shorter than the second anchor 205. More specifically, the length of the first rod member 41 of the first anchor 4 protruding from the vertical wall W1 may be shorter than the second rod member 251 of the second anchor 205 protruding from the horizontal wall W2. This allows the contact area between the first anchor 4 and the filler 202 to be larger than the contact area between the second anchor 205 and the filler 202. Therefore, the reinforcing member 201 can make the frictional force that the filler 202 receives from the first anchor 4 larger than the frictional force that the filler 202 receives from the second anchor 205. As a result, the reinforcing member 201 can suppress deformation of the filler 202 in a direction away from the vertical wall W1.

[0046] Furthermore, the first anchor 4 may be longer than the second anchor 205. More specifically, the length of the first rod member 41 of the first anchor 4 protruding from the vertical wall W1 may be longer than the second rod member 251 of the second anchor 205 protruding from the horizontal wall W2. This allows the contact area between the second anchor 205 and the filler 202 to be larger than the contact area between the first anchor 4 and the filler 202. Therefore, the reinforcing member 201 can make the frictional force that the filler 202 receives from the second anchor 205 larger than the frictional force that the filler 202 receives from the first anchor 4. As a result, the reinforcing member 201 can suppress deformation of the filler 202 in a direction away from the vertical wall W1 and suppress compression downward (opposite to the arrow Z in FIG. 3).

[0047] As described above, the filler 202 may be disposed in the space 210 between the vertical wall W1, the horizontal wall W2, and the slope S. The reinforcing member 201 may include a second anchor 205 extending from the horizontal wall W2 to the inside of the filler 202. In this way, the second anchor 205 can suppress deformation of the filler 202 near the horizontal wall W2.

[0048] Next, a manufacturing method of the reinforcing member 1, 201 will be described with reference to Fig. 6. As shown in Fig. 6(a), the reinforcing member 1 (201) is provided between a bridge 20 and an embankment 30 behind the bridge 20.

[0049] 6(b), a plurality of first anchors 4 are arranged on the vertical wall W1. In the manufacturing method of the reinforcing member 201, in addition to the first anchors 4, a plurality of second anchors 205 are arranged on the horizontal wall W2.

[0050] Furthermore, as shown in FIG. 6(c), the filler 2 is filled into the space 10 surrounded by the vertical wall W1 and the slope S. In this embodiment, two liquids, a polyol component and a polyisocyanate component, of the foaming raw material are mixed inside the space 10 and sprayed out. Therefore, the foaming raw material is filled while conforming to the surface shapes of the vertical wall W1 and the slope S. As a result, the filler 2 is filled into the space 10 without leaving any gaps. At this time, the filler 2 is filled while wrapping the first anchor 4 exposed in the space 10 inside, covering the periphery of the first anchor 4 and bonding and integrating it with the structure and its accessories.

[0051] In the manufacturing method of the reinforcing member 201, the space 210 surrounded by the vertical wall W1, the horizontal wall W2, and the slope S is filled with the filler 202 in the same manner as in the manufacturing method of the reinforcing member 1. At this time, the filler 202 is filled while wrapping around the first anchor 4 and the second anchor 205 exposed in the space 210, covering the periphery of the first anchor 4 and the second anchor 205, and bonding and integrating with the structure and its accessories.

[0052] In the manufacturing method of the reinforcing member 1 (201), the filler 2 (202) may be formed in layers by repeatedly spraying the foaming raw material in a horizontal direction. Also, prior to the formation of the filler 2 (202), a waterproof primer may be applied to the surface of the slope S. Alternatively, a drainage material layer may be provided between the filler 2 (202) and the slope S of the embankment 30.

[0053] Finally, as shown in Fig. 6(d), a plate member 3 is placed on top of the filling material 2 (202) to form an approach section to the bridge 20. The plate member 3 is placed across the deck 21 of the bridge 20 and the upper surface of the embankment 30.

[0054] The manufacturing method of the reinforcing member 1 (201) employs on-site foamed rigid polyurethane foam for the filler 2 (202), so that the reinforcing member 1 (201) is formed integrally with the bridge 20 and / or the embankment 30. As described above, the manufacturing method of the reinforcing member 1 (201) can install the reinforcing member 1 (201) without pouring concrete or curing the slope S, or reinforcing the supporting ground of the bridge 20 or the embankment 30. As a result, the manufacturing method of the reinforcing member 1 (201) can realize construction in a short period of time in places where it is difficult for large heavy machinery to enter.

[0055] In addition, the filler 2 (202) made of hard polyurethane foam hardens in about one day after foaming begins, and can obtain a desired strength. This means that no curing is required after construction, and construction time can be shortened.

[0056] As described above, according to the reinforcing member 1 (201) of the present disclosure, a novel reinforcing member that is provided between a structure and the ground near the structure can be provided.

[0057] Although the embodiment of the present disclosure has been described above, the present disclosure is not limited to the above embodiment, and various modifications are possible without departing from the gist of the invention. In particular, the multiple modifications described in this specification can be arbitrarily combined as necessary.

[0058] For example, in the above embodiment, the first anchor 4 has one return portion 42, but the present disclosure is not limited to this. That is, the first anchor 4 may be provided with a plurality of return portions 42 depending on the load received by the filler 2 (202). For example, among the plurality of first anchors 4 arranged in the vertical wall W1, the return portion 42 of the first anchor 4 arranged in the upper part of the vertical wall W1 may be provided more than the return portion 42 of the first anchor 4 arranged in the lower part of the vertical wall W1.

[0059] In the above embodiment, the length of the first anchor 4 arranged on the vertical wall W1 is constant regardless of the position at which it is arranged, but the present disclosure is not limited to this. That is, the length by which the first anchor 4 protrudes into the space 10 (210) may be changed depending on the load received by the filler 2 (202) at the position at which the first anchor 4 is arranged. For example, the length by which the first anchor 4 arranged on the upper part of the vertical wall W1 protrudes into the space 10 (210) may be longer than the length by which the first anchor 4 arranged on the lower part of the vertical wall W1.

[0060] Furthermore, in the above embodiment, the manufacturing method of the reinforcing member 1 (201) has been described using an example in which the filler 2 (202) is filled into the space 10 (210) using in-situ foamed rigid polyurethane foam, but the present disclosure is not limited thereto. That is, the filler 2 (202) may be formed by combining an in-situ foamed resin foamed body with a plate-shaped or block-shaped foamed body. In particular, when the volume of the space 10 is large, a plate-shaped or block-shaped foamed body may be placed in the space 10, and an in-situ foamed resin foamed body may be formed around it. It is preferable that the in-situ foamed resin foamed body is extruded and molded onto at least the first anchor 4 (204) and the surfaces of the bridge 20 and embankment 30 surrounding the space 10. [Explanation of symbols]

[0061] 1 (201): Reinforcing member 2 (202): Filler 3: Plate member 4: First anchor 205: Second anchor 20: Bridge 21: Deck 22: Substructure 22a: Pier 22b: Footing W1: Vertical wall W2: Horizontal wall 30: Embankment S: Slope 10(210): Space

Claims

1. A reinforcing member disposed between the vertical wall and the inclined surface, A filler disposed in a space between the vertical wall and the inclined surface; a first anchor extending from the vertical wall to an interior of the filler; A reinforcing member comprising:

2. A reinforcing member disposed between the vertical wall and a horizontal wall that is continuous with the vertical wall and intersects with the vertical wall, a second anchor extending from the lateral wall into the filler material; The filler is disposed in the space between the vertical wall, the horizontal wall, and the slope. The reinforcing member according to claim 1 .

3. A reinforcing member disposed between a vertical wall and a horizontal wall that is continuous with the vertical wall and intersects with the vertical wall, A filler material disposed in a space between the vertical wall and the horizontal wall; a first anchor extending from the vertical wall to an interior of the filler; a second anchor extending from the lateral wall into the filler material; A reinforcing member comprising:

4. The interval between adjacent first anchors is smaller in the upper portion of the vertical wall than in the lower portion of the vertical wall. The reinforcing member according to claim 1 or 3.

5. The vertical wall is the back surface of the substructure supporting the deck of the bridge, The horizontal wall is the upper surface of the footing which is the foundation part of the substructure, A plate member is placed on top of the filler and forms a road surface leading to the bridge. The reinforcing member according to claim 3 .

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