Structure and construction method for structure

Abstract

To simplify construction of a structure.SOLUTION: A structure includes: reinforcement embankments which contain an embankment and a reinforcement material covering the embankment, and is laminated in at least two layers in a vertical direction; a support member which has a horizontal position fixed to the reinforcement embankments, and includes a projection projecting from the front faces of the reinforcement embankments; a cover face member covering the front faces of the two or more reinforcement embankments; a fixing part for fixing the projection of the support member in the two or more reinforcement embankments, and the cover face member; and a rigid wall including at least the cover face member, and the reinforcement material at the front faces of the reinforcement embankments therein.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a structure and a method for constructing a structure. [Background technology]

[0002] Reinforced embankments, which are structures with rigid walls on their surfaces, have been widely used as earth retaining walls for railways because of their high earthquake resistance.

[0003] For example, Patent Document 1 discloses a method for constructing a reinforced soil retaining wall in which an embankment with a vertical or nearly vertical gradient is constructed by combining divided wall surfaces or sandbags, etc., and then an integrated wall surface with overall rigidity is cast in place in front of the embankment. The construction method in Patent Document 1 is a conventional, general procedure in which the reinforced embankment is first constructed, and then the rigid wall surface is constructed. Since the reinforced embankment settles due to the compaction load and its own weight during construction, constructing the rigid wall surface after the settlement has subsided results in a highly stable structure. When constructing the rigid wall surface, scaffolding is set up in front of the reinforced embankment, formwork is installed, concrete is poured into the formwork, and the formwork is then removed.

[0004] Such embankment structures usually have an internal formwork structure to prevent deformation of the formwork due to lateral pressure when concrete is poured. For example, a separator attached to the back of the formwork is welded to an L-shaped steel beam, and the L-shaped steel beam is completely fixed by welding to the welded wire mesh of the reinforced embankment using metal fittings for fixing the outer formwork (see Non-Patent Document 1).

[0005] Patent Document 2 discloses a method for constructing a reinforced embankment in which frames forming the slopes of the embankment and formwork are connected by extendable spacer rods.

[0006] Patent Document 3 discloses a construction method for integrating wall blocks using a covering member that is a net or sheet. To secure the covering member, encasing concrete is provided above the ground and foot protection concrete is provided below the ground, and the ground is tightened by tightening the covering member.

[0007] Patent Document 4 discloses a construction method that improves the stability of wall panels against earth pressure by using multiple wall panels erected on the entire surface of the ground and anchor materials connected to the back of the panels. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 1-21122 [Patent Document 2] Japanese Patent Application Publication No. 4-108915 [Patent Document 3] Japanese Patent Application Laid-Open No. 2014-133971 [Patent Document 4] Japanese Patent Application Publication No. 2023-23931 [Non-patent literature]

[0009] [Non-Patent Document 1] RRR-B Method Design and Construction Manual Construction method for reinforced embankment with rigid wall surface Summary of the Invention [Problem to be solved by the invention]

[0010] However, after extensive research, the present inventors have found that the conventional structures or construction methods described in the above patent documents have the following problems.

[0011] In the construction method of Patent Document 1, the L-shaped steel beams, metal fittings for fixing the outer formwork, separators, and other materials used as structures within the formwork are temporary materials for pouring concrete into rigid walls. These temporary materials must be installed within the formwork where concrete is to be poured, avoiding reinforcing bars and other materials that contribute to structural strength, which inevitably complicates the structure within the formwork. Furthermore, if welding of temporary materials is required, the number of steps increases.

[0012] Furthermore, in the construction method of Patent Document 2, the timing for installing the spacer rods is limited to when assembling the formwork after the construction of the embankment. The spacer rods must be installed within the formwork where concrete is to be poured, avoiding reinforcing bars and other elements that contribute to the structural strength, making the installation process complicated.

[0013] Furthermore, with regard to the construction method of Patent Document 3, reinforced embankments that are installed in multiple stages in a substantially vertical direction may partially or entirely protrude horizontally due to the effects of earthquakes, etc. When the covering members of Patent Document 3 are applied to such reinforced embankments, horizontal protrusion is suppressed only by fastening the covering members with concrete above and below the ground, so it is thought that there is room for improvement in suppressing protrusion.

[0014] Furthermore, the construction method of Patent Document 4 is intended to improve the stability of wall panels, but is not thought to improve the stability of reinforced embankments that are installed in multiple stages in a substantially vertical direction. Therefore, when the construction method of Patent Document 4 is applied to such reinforced embankments, there is thought to be room for improvement in terms of suppressing the horizontal protrusion of the reinforced embankments.

[0015] The present invention has been made in view of the above circumstances, and has as its object to simplify the construction of structures. [Means for solving the problem]

[0016] One aspect of the present invention for solving the above problem is a structure comprising: reinforced embankments including embankments and reinforcing material covering the embankments, stacked in two or more layers in the vertical direction; support members whose horizontal position relative to the reinforced embankments is fixed and which include protrusions protruding from the front surfaces of the reinforced embankments; covering members which cover the front surfaces of two or more of the reinforced embankments; fixing parts which fix the protrusions of the support members and the covering members in the two or more reinforced embankments; and a rigid wall which contains at least the covering members and the reinforcing material on the front surfaces of the reinforced embankments.

[0017] The reinforced embankment may include a welded wire mesh provided between the embankment and the reinforcing material, and the support member may include an engaging portion that engages with the welded wire mesh.

[0018] The support member may include a claw portion that extends in a direction different from the front-to-rear direction of the reinforcing embankment and is embedded in the embankment.

[0019] The cover member may have a mesh structure, and the fixing portion may include a plate on the outer surface side of the cover member that is larger than the mesh size of the mesh structure, and may fix the plate to the protrusion of the support member.

[0020] Another aspect of the present invention is a method for constructing a structure, comprising the steps of laying reinforcing material and installing a welded wire mesh inside the reinforcing material; engaging a support member with the welded wire mesh; pouring embankment material inside the reinforcing material and compacting it to construct a reinforced embankment with the protruding portions of the support members protruding from the front surface; repeating the steps from laying the reinforcing material to constructing the reinforced embankment to construct at least one other reinforced embankment above the reinforced embankment with the protruding portions of the support members protruding from the front surface; attaching a covering member by fixing the covering member to the protruding portions of two or more support members so as to cover the front surfaces of two or more of the reinforced embankments; and spraying concrete from the outside of the covering member.

[0021] Another aspect of the present invention is a method for constructing a structure, comprising the steps of laying reinforcing material and pouring embankment material inside the reinforcing material; installing support members so that the claws of the support members are buried inside the embankment and the protruding portions of the support members protrude from the front surface of the reinforcing material; compacting the embankment to construct a reinforced embankment in which the protruding portions of the support members protrude from the front surface; repeating the steps from laying the reinforcing material to constructing the reinforced embankment to construct at least one other reinforced embankment above the reinforced embankment in which the protruding portions of the support members protrude from the front surface; attaching a covering member by fixing the covering member to the protruding portions of two or more support members so as to cover the front surfaces of two or more of the reinforced embankments; and spraying concrete from the outside of the covering member. [Effects of the Invention]

[0022] According to the present invention, construction of structures including reinforced embankment structures can be simplified. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is a partial perspective view showing a configuration example of a reinforced embankment structure according to a first embodiment. [Figure 2] FIG. 1 is a partial cross-sectional view showing a configuration example of a reinforced embankment structure according to a first embodiment. [Figure 3] FIG. 1 is a partial front view showing a configuration example of a reinforced embankment structure according to a first embodiment. [Figure 4] FIG. 2 is an explanatory diagram showing an example of the operation of the reinforced embankment structure according to the first embodiment. [Figure 5] FIG. 2 is an explanatory diagram showing an example of a construction method for a reinforced embankment structure according to the first embodiment. [Figure 6] FIG. 10 is a partial cross-sectional view showing a configuration example of a reinforced embankment structure according to a second embodiment. [Figure 7] FIG. 10 is an explanatory diagram showing an example of a construction method for a reinforced embankment structure according to a second embodiment. [Figure 8] FIG. 10 is a partial cross-sectional view showing a configuration example of a reinforced embankment structure according to a third embodiment. [Figure 9] FIG. 10 is a partial front view showing a configuration example of a reinforced embankment structure according to a third embodiment. [Figure 10] FIG. 10 is an explanatory diagram showing an example of a construction method for a reinforced embankment structure according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this specification and the drawings, elements having substantially the same functional configurations are designated by the same reference numerals, and redundant description will be omitted.

[0025] <Reinforced embankment structure according to the first embodiment> The following describes a reinforced embankment structure 1 according to a first embodiment, which is an example of a structure. Figures 1 and 2 show an example of the reinforced embankment structure 1 according to this embodiment, with Figure 1 being a partial perspective view of the reinforced embankment structure 1, Figure 2 being a partial cross-sectional view of the reinforced embankment structure 1, and Figure 3 being a partial front view of the reinforced embankment structure 1. Note that the rigid wall 20 is not shown in Figure 3.

[0026] In this specification, the rigid wall 20 side (outside) as viewed from the embankment 10 is referred to as the front of the reinforced embankment structure 1, and the embankment 10 side is referred to as the rear, with the front of the reinforced embankment structure 1 being the positive X-axis direction and the rear being the negative X-axis direction. Furthermore, the left-right direction as viewed from the rigid wall 20 side is the longitudinal direction of the reinforced embankment structure 1, with the right side in the longitudinal direction being the positive Y-axis direction and the left side in the longitudinal direction being the negative Y-axis direction. Furthermore, the vertically upward direction is referred to as the positive Z-axis direction and the vertically downward direction is referred to as the negative Z-axis direction.

[0027] The reinforced embankment structure 1 according to the first embodiment is constructed by stacking two or more reinforced embankments 2 in the vertical direction, as shown in Figure 2. Each reinforced embankment 2 includes an embankment 10 made of a predetermined embankment material, a wire mesh 11 provided on the outside of the embankment 10, and a reinforcing material 12 that covers the embankment 10 and the wire mesh 11 from the outside.

[0028] The reinforcing material 12 covers the embankment 10 and the wire mesh 11 on at least the front surface (hereinafter referred to as the "front surface 2a") of the reinforced embankment 2. The reinforcing material 12 in this embodiment further covers a portion of the upper surface and the entire lower surface of the reinforced embankment 2. The reinforcing material 12 is, for example, a mesh-like member.

[0029] The wire mesh 11 is used to temporarily hold down the embankment 10 so that it does not spill out when the reinforced embankment 2 is constructed. From this perspective, a welded wire mesh can be used, in which vertical and horizontal bars are arranged and welded in a roughly L-shape in cross section (side view) as shown in Figures 1 and 2. In addition to the temporary holding down aspect, hooks 21, which will be described later, are engaged with the wire mesh 11 according to this embodiment.

[0030] In the reinforced embankment structure 1, a rigid wall 20 is provided in front of the stacked reinforced embankments 2. The rigid wall 20 is made of concrete, and in this embodiment, it is sprayed concrete. In this specification, concrete is used to include mortar. The interior of the rigid wall 20 includes a portion of the reinforcing material 12 covering the front surface 2a of each reinforced embankment 2, a hook 21 as a support member according to the present disclosure that engages with the wire mesh 11, a net 22 as a covering member according to the present disclosure that covers the front surface 2a of two or more reinforced embankments 2, a plate 23 provided on the opposite side of the net 22 from the reinforced embankments 2, and a nut 24 as a fixing part that tightens and fixes the hook 21 to the plate 23. Note that "included inside the rigid wall 20" includes the above-mentioned components being surrounded by the rigid wall 20 in a cross-sectional view and also includes at least a portion of the above-mentioned components being in contact with the rigid wall 20.

[0031] As shown in Fig. 2, the hook 21 is a generally J-shaped member in cross section (side view) that includes a protruding portion 21a and an engaging portion 21b. As shown in Fig. 3, two or more hooks (two hooks per reinforcing embankment 2 in this embodiment) are provided at intervals in the longitudinal direction for each reinforcing embankment 2. The protruding portion 21a of the hook 21 protrudes forward from the front surface 2a of the reinforcing embankment 2. A male thread that screws into a nut 24 is cut at the tip of the protruding portion 21a.

[0032] The engaging portion 21b of the hook 21 is engaged with the horizontal bar of the wire mesh 11. This fixes the horizontal position (position in the X-axis direction) of the hook 21 relative to the reinforcing embankment 2. In other words, the hook 21 moves integrally with the reinforcing embankment 2 in the X-axis direction. The engaging portion 21b of the hook 21 may also be engaged with the vertical bar of the wire mesh 11.

[0033] The net 22 is provided so as to cover the front faces 2a of the two or more reinforcing embankments 2. The net 22 is, for example, a metal net made of woven metal wires. In this embodiment, the net 22 covers the entire front faces 2a of the two or more reinforcing embankments 2 as shown in Figure 3. In one embodiment, the net 22 covers at least the part of the front faces 2a of the reinforcing embankments 2 where the hooks 21 protrude.

[0034] The plate 23 is provided on the outer surface (the surface facing the positive direction of the X-axis) of the net 22. The plate 23 has holes through which the protrusions 21a of the hooks 21 are inserted. The plate 23 is, for example, a metal plate. The mesh size of the plate 23 is at least larger than the mesh size of the net 22.

[0035] The nut 24 is inserted into a hole in the plate 23 and is screwed onto the tip of the protruding portion 21a of the hook 21 that protrudes from the outer surface of the plate 23 (the surface on the X-axis positive side).

[0036] Fastening the hook 21 and the nut 24 tightens and fixes together the wire mesh 11 with which the engaging portion 21b of the hook 21 is engaged and the reinforcing material 12 covering the outside of the wire mesh 11 in the reinforced embankment 2, and the net 22 covering the front surface 2a of the reinforced embankment 2 and the plate 23 provided on the outer surface of the net 22 in the rigid wall 20. In other words, fastening the hook 21 and the nut 24 fixes and integrates the reinforced embankment 2 and the net 22 together.

[0037] FIG. 4 is an explanatory diagram showing a schematic example of the operation of the reinforced embankment structure 1. The reinforced embankment structure 1 according to this embodiment may be subjected to horizontal forces, such as those caused by earthquakes. For example, as shown in FIG. 4, consider the case where a force F1 acts in the positive direction of the X-axis relative to the upper reinforcing embankment 2, causing a shear force to act between the upper reinforcing embankment 2 and the lower reinforcing embankment 2. In this case, the force F1 is first transmitted to the net 22 as a force F2, which pushes the portion of the net 22 fastened to the upper reinforcing embankment 2 in the positive direction of the X-axis. The force F2 pushing the net 22 propagates vertically through the net 22 and is transmitted as a force F3, for example, pushing the portion of the net 22 fastened to the lower reinforcing embankment 2. The net 22 is also fixed to the hooks 21 in the lower reinforcing embankment 2, and the hooks 21 are engaged with the wire mesh 11, fixing its horizontal position relative to the reinforcing embankment 2. As a result, force F3 acts on the lower reinforcing embankment 2, attempting to move it in the positive direction of the X-axis. Meanwhile, due to the weight of the reinforcing embankment 2 and friction with the ground and the reinforcing embankments 2 above and below it, a reaction force G1 acts in the negative direction of the X-axis against force F3, trying to keep the lower reinforcing embankment 2 in place. Force G1 propagates through net 22 and is transmitted to the upper reinforcing embankment 2 as force G2 in the negative direction of the X-axis. The force is also transmitted via net 22 not only to the lower reinforcing embankment 2, but also to the reinforcing embankment 2 above the upper reinforcing embankment 2 and below the lower reinforcing embankment 2, and the reaction forces trying to keep each reinforcing embankment 2 in place are combined into force G2 in the negative direction of the X-axis against the upper reinforcing embankment 2. The force F1 acting in the positive direction of the X-axis on the upper reinforced embankment 2 and the force G2 acting in the negative direction of the X-axis are balanced, thereby suppressing the horizontal protrusion of the upper reinforced embankment 2 due to force F1.

[0038] According to the reinforced embankment structure 1 of this embodiment, horizontal protrusion of the reinforced embankment 2 due to a force such as a predetermined earthquake is suppressed.

[0039] From the viewpoint of achieving the above-mentioned effects, it is preferable that the net 22 has a strength sufficient to prevent it from being destroyed when a force F1 or the like is applied to the reinforced embankment 2. Such strength can be determined by experiment or simulation, assuming the force that would be exerted when a force caused by an earthquake acts horizontally on the reinforced embankment 2 having a predetermined mass.

[0040] In this embodiment, the protrusion 21a of the hook 21 is fastened and fixed using the nut 24, but any other desired fixing means capable of fixing the hook 21 to the plate 23 may be used.

[0041] Furthermore, one plate 23 is provided for one hook 21, but for example, one plate 23 having two or more holes for inserting the protrusions 21a of the hooks 21 may be provided for two or more hooks 21.

[0042] Furthermore, it is sufficient that the hooks 21 are provided in any desired number of reinforced embankments 2, two or more, among the multiple reinforced embankments 2 that make up the reinforced embankment structure 1. In other words, the reinforced embankment structure 1 may include both reinforced embankments 2 in which the hooks 21 are engaged and fixed to the net 22, and reinforced embankments 2 in which the hooks 21 are not engaged.

[0043] Furthermore, although the rigid wall 20 is provided along the vertical direction, it may also be provided at an incline towards the rear side of the reinforcing embankment 2, for example.

[0044] <Construction method of reinforced embankment structure according to the first embodiment> Next, a configuration example of a construction method for the reinforced embankment structure 1 according to the first embodiment will be described with reference to Fig. 5. Fig. 5 is an explanatory diagram showing an outline of a configuration example of a construction method for the reinforced embankment structure 1 according to the first embodiment.

[0045] In the construction method according to this embodiment, first, as shown in FIG. 5(a), reinforcing materials 12 are laid at the location where the reinforced embankment 2 is to be constructed. Next, wire mesh 11 is placed inside the reinforcing materials 12. Next, hooks 21 are engaged with the wire mesh 11. In one embodiment, the lowest level of reinforced embankment 2 is constructed on the ground where a foundation concrete has been laid. Therefore, the reinforcing materials 12 are laid on top of the foundation concrete.

[0046] 5(b), the embankment material that constitutes the embankment 10 is poured inside the reinforcing material 12 and compacted. Next, the reinforcing material 12 is placed over the top surface of the compacted embankment 10.

[0047] Next, as shown in Figure 5(c), the above steps are repeated to build another reinforcing embankment 2 on top of the first reinforcing embankment 2. In one embodiment, one or more reinforcing embankments 2 are further stacked until a desired height is reached.

[0048] Next, as shown in Figure 5(d), the net 22 is installed so as to cover the front surfaces 2a of two or more reinforced embankments 2. At this time, the mesh of the net 22 is set so that the protrusions 21a of the hooks 21 pass through and protrude. Next, the plate 23 is attached so that the protrusions 21a of the hooks 21 pass through holes provided in the plate 23. Next, nuts 24 are attached to the protrusions 21a protruding from the front surface of the plate 23 and tightened.

[0049] 5(e), sprayed concrete is sprayed from the front side of the net 22 to construct a rigid wall 20 that contains inside it a part of the reinforcing member 12, the protruding portion 21a of the hook 21, the net 22, the plate 23, and the nut 24. At this time, by using a mesh member with a predetermined mesh size as the net 22, the sprayed concrete can reach the front surface of the reinforcing member 12 that is inside the net 22, so that at least the front surface of the reinforcing member 12 is contained inside the rigid wall 20.

[0050] The construction method according to the first embodiment eliminates the need for scaffolding, which was previously required for constructing structures, and temporary materials for pouring concrete as rigid walls, including L-shaped steel as formwork or structures within the formwork, metal fittings for fixing the formwork, or separators. This reduces the cost of scaffolding and temporary materials, and shortens the construction period required for constructing the scaffolding and temporary materials, while also enabling the construction of a reinforced embankment structure 1 in which horizontal protrusion of the reinforced embankment 2 due to the force of a specified earthquake or the like is suppressed.

[0051] It should be noted that the hooks 21 may be engaged with the wire mesh 11 in advance before the wire mesh 11 is installed.

[0052] <Reinforced embankment structure according to the second embodiment> A reinforced embankment structure 30 according to a second embodiment, which is an example of a structure, will be described below. Fig. 6 is a partial cross-sectional view of the reinforced embankment structure 30 according to the second embodiment. The front view is omitted because it is the same as that of the first embodiment. Furthermore, in the second embodiment, the same reference numerals are used for the same components as those of the first embodiment, and their description will be omitted.

[0053] The reinforced embankment structure 30 according to the second embodiment is provided with an anchor 31 as a support member. As shown in FIG. 6, the anchor 31 is a generally T-shaped member in cross section (side view) that includes a protruding portion 31a and an embedded portion 31b. The protruding portion 31a of the anchor 31 protrudes forward from the front surface 2a of the reinforced embankment 2. An external thread that engages with a nut 24 is cut at the end of the protruding portion 31a. The nut 24 is attached to and fastened to the protruding portion 31a of the anchor 31. The embedded portion 31b of the anchor 31 is buried in a position near the center of the embankment 10 in the vertical direction. The embedded portion 31b is provided at its end with a claw portion 31c that extends in the vertical direction (Z-axis direction). In one embodiment, a plurality of claw portions 31c are provided in the embedded portion 31b.

[0054] The claws 31c provided on the buried portion 31b of the anchor 31 prevent the anchor 31 from moving in the X-axis direction relative to the embankment 10. This fixes the horizontal position of the anchor 31 relative to the reinforced embankment 2. In other words, the anchor 31 moves together with the reinforced embankment 2 in the X-axis direction.

[0055] Fastening the anchors 31 and nuts 24 tightens and fixes the embankment 10 in which the claws 31c of the anchors 31 in the reinforcing embankment 2 are embedded, as well as the net 22 covering the front surface 2a of the reinforcing embankment 2 in the rigid wall 20 and the plate 23 provided on the outer surface of the net 22. In other words, fastening the anchors 31 and nuts 24 fixes and integrates the reinforcing embankment 2 and the net 22 to each other.

[0056] According to the reinforced embankment structure 30 of the second embodiment, the horizontal protrusion of the reinforced embankment 2 due to a force such as a specified earthquake is suppressed by the same action as described for the reinforced embankment structure 1 of the first embodiment.

[0057] In the second embodiment, wire mesh 11 is used to temporarily hold back the embankment 10 so that it does not spill out, but from this perspective, instead of wire mesh 11, multiple sandbags stacked and arranged to prevent the embankment 10 from spilling out may also be used.

[0058] Furthermore, the anchor 31 may be provided with an engagement portion (not shown) as in the first embodiment, and may be configured to be engaged with the wire mesh 11 at the engagement portion.

[0059] 6, the anchor 31 need not necessarily have a generally T-shaped cross section as long as the claw portions 31c extend a predetermined length in a direction other than the X-axis direction. For example, the anchor 31 may have a generally arrow-shaped cross section in which the claw portions 31c are inclined toward the positive direction of the X-axis.

[0060] <Construction method of reinforced embankment structure according to the second embodiment> Next, a configuration example of a construction method for a reinforced embankment structure 30 according to the second embodiment will be described with reference to Fig. 7. Fig. 7 is an explanatory diagram showing an outline of a configuration example of a construction method for a reinforced embankment structure 1 according to the second embodiment.

[0061] In the construction method according to this embodiment, first, as shown in Fig. 7(a), reinforcing materials 12 are laid at the location where the reinforced embankment 2 is to be constructed. Next, wire mesh 11 is installed inside the reinforcing materials 12. In one embodiment, the lowest level of reinforced embankment 2 is constructed on the ground where a foundation concrete has been laid. Therefore, the reinforcing materials 12 are laid on top of the foundation concrete.

[0062] Next, as shown in Figure 7(b), the embankment material that will make up the embankment 10 is poured inside the reinforcing material 12 and compacted. The embankment material is poured so that when compacted, it will be at about the middle height in the vertical direction of the wire mesh 11. Next, the anchor 31 is installed so that its protruding part 31a protrudes forward from the front surface 2a of the reinforced embankment 2 and its buried part 31b is on top of the poured embankment material.

[0063] Next, as shown in Figure 7(c), additional embankment material is poured on top of the embankment material with the anchors 31 installed and compacted. Next, the reinforcing material 12 is placed over the top surface of the compacted embankment 10. This causes the embedded portion 31b of the anchor 31 to be embedded in the embankment 10.

[0064] Next, as shown in Figure 7(d), the above steps are repeated to build another reinforcing embankment 2 on top of the first reinforcing embankment 2. In one embodiment, one or more reinforcing embankments 2 are further stacked until a desired height is reached.

[0065] Next, as shown in Figure 7(e), the net 22 is installed so as to cover the front surfaces 2a of two or more reinforced embankments 2. At this time, the mesh of the net 22 is set so that the protruding portions 31a of the anchors 31 pass through and protrude. Next, the plate 23 is installed so that the protruding portions 31a of the anchors 31 pass through the holes provided in the plate 23. Next, nuts 24 are attached to the protruding portions 21a protruding from the front surface of the plate 23 and tightened.

[0066] Next, as shown in Figure 7(f), sprayed concrete is sprayed from the front side of the net 22 to construct a rigid wall 20 that includes a portion of the reinforcing material 12, the protruding portion 31a of the anchor 31, the net 22, the plate 23, and the nut 24 inside.

[0067] As with the first embodiment, the construction method according to the second embodiment eliminates the need for scaffolding, formwork or formwork-internal structures, L-shaped steel beams, formwork fixing hardware, separators, and other temporary materials for pouring concrete as rigid walls, which were previously required for constructing structures. This reduces the cost of scaffolding and temporary materials, and shortens the construction period required for constructing the scaffolding and temporary materials, while also enabling the construction of a reinforced embankment structure 30 in which horizontal protrusion of the reinforced embankment 2 due to a force such as a specified earthquake is suppressed.

[0068] <Reinforced embankment structure according to the third embodiment> A reinforced embankment structure 40 according to a third embodiment, which is an example of a structure, will be described below. Fig. 8 is a partial cross-sectional view of the reinforced embankment structure 40 according to the third embodiment, and Fig. 9 is a partial front view of the reinforced embankment structure 40. Note that the rigid wall 20 is not shown in Fig. 9. Furthermore, in the third embodiment, the same components as those in the first embodiment will be designated by the same reference numerals, and their description will be omitted.

[0069] The reinforced embankment structure 40 according to the third embodiment is provided with an anchor 41 as a support member. As shown in FIG. 8, the anchor 41 is a generally L-shaped member in cross section (side view) that includes a protruding portion 41a and an embedded portion 41b. The protruding portion 41a of the anchor 41 protrudes forward from the front surface 2a of the reinforcing embankment 2. An external thread that engages with a nut 24 is formed at the end of the protruding portion 41a. The nut 24 is attached to and fastened to the protruding portion 41a of the anchor 41. The embedded portion 41b of the anchor 41 is disposed on the upper surface of the embankment 10 and is embedded between one reinforcing embankment 2 on which the anchor 41 is provided and another reinforcing embankment 2 above the reinforcing embankment 2. The embedded portion 41b is provided with a claw portion 41c at the end that extends downward (negative Z-axis direction), i.e., in the direction that penetrates into the embankment 10. In one embodiment, a plurality of claw portions 41c are provided in the embedded portion 41b.

[0070] The claws 41c provided on the buried part 41b of the anchor 41 penetrate into the embankment 10, thereby preventing the anchor 41 from moving in the X-axis direction relative to the embankment 10. This fixes the horizontal position of the anchor 41 relative to the reinforced embankment 2. In other words, the anchor 41 moves together with the reinforced embankment 2 in the X-axis direction.

[0071] As shown in FIG. 9, the plate 23 according to the third embodiment is provided on the outer surface of the net 22 between two upper and lower reinforcing embankments 2.

[0072] Fastening the anchors 41 and nuts 24 tightens and fixes the embankment 10 in which the claws 41c of the anchors 41 in the reinforcing embankment 2 are embedded, as well as the net 22 covering the front surface 2a of the reinforcing embankment 2 in the rigid wall 20 and the plate 23 provided on the outer surface of the net 22. In other words, fastening the anchors 41 and nuts 24 fixes and integrates the reinforcing embankment 2 and the net 22 together.

[0073] According to the reinforced embankment structure 40 of the third embodiment, the horizontal protrusion of the reinforced embankment 2 due to a force such as a specified earthquake is suppressed by the same action as described for the reinforced embankment structure 1 of the first embodiment.

[0074] In the third embodiment, wire mesh 11 is used to temporarily hold back the embankment 10 so that it does not spill out, but from this perspective, instead of wire mesh 11, multiple sandbags stacked and arranged to prevent the embankment 10 from spilling out may also be used.

[0075] Furthermore, the anchor 41 may be provided with an engagement portion (not shown) as in the first embodiment, and may be configured to be engaged with the wire mesh 11 at the engagement portion.

[0076] <Construction method of reinforced embankment structure according to the third embodiment> Next, a configuration example of a construction method for a reinforced embankment structure 40 according to the third embodiment will be described with reference to Fig. 10. Fig. 10 is an explanatory diagram showing an outline of a configuration example of a construction method for a reinforced embankment structure 1 according to the third embodiment.

[0077] In the construction method according to this embodiment, first, as shown in Fig. 10(a), reinforcing materials 12 are laid at the location where the reinforced embankment 2 is to be constructed. Next, wire mesh 11 is installed inside the reinforcing materials 12. In one embodiment, the lowest reinforced embankment 2 is constructed on the ground where a foundation concrete has been constructed. Therefore, the reinforcing materials 12 are laid on top of the foundation concrete.

[0078] Next, as shown in FIG. 10(b), the embankment material that constitutes the embankment 10 is poured inside the reinforcing material 12 and compacted. Next, the reinforcing material 12 is placed over the top surface of the compacted embankment 10. Next, the anchor 41 is installed so that its protruding portion 41a protrudes forward from the front surface 2a of the reinforced embankment 2 and its embedded portion 41b is located above the reinforcing material 12 on the top surface of the embankment 10. The claw portion 41c of the anchor 41 is thrust into the embankment 10 on the top surface of the embankment 10 that is not covered by the reinforcing material 12. Alternatively, holes may be formed in the reinforcing material 12 through which the claw portion 41c passes, and the claw portion 41c may be thrust into the embankment 10 so as to pass through the holes.

[0079] In this embodiment, the anchor 41 is installed so that its buried portion 41b is located above the reinforcing material 12 on the top surface of the embankment 10, but the anchor 41 may also be installed so that its buried portion 41b is located between the reinforcing material 12 and the embankment 10. Specifically, first, the embankment material that constitutes the embankment 10 is poured in and compacted. Next, the anchor 41 is installed so that its protruding portion 41a protrudes forward from the front surface 2a of the reinforced embankment 2. Next, the reinforcing material 12 is placed over the top surface of the compacted embankment 10. At this time, a hole may be formed in the reinforcing material 12 through which the protruding portion 41a passes, and the reinforcing material 12 and the anchor 41 may be installed so that the protruding portion 41a passes through the hole.

[0080] Next, as shown in Figure 10(d), the above steps are repeated to build another reinforced embankment 2 on top of the first reinforced embankment 2. In one embodiment, one or more reinforced embankments 2 are further stacked until a desired height is reached.

[0081] Next, as shown in Figure 10(e), the net 22 is installed so as to cover the front surfaces 2a of two or more reinforced embankments 2. At this time, the mesh of the net 22 is set so that the protruding portions 41a of the anchors 41 pass through and protrude. Next, the plate 23 is installed so that the protruding portions 41a of the anchors 41 pass through the holes provided in the plate 23. Next, nuts 24 are attached to the protruding portions 21a protruding from the front surface of the plate 23 and tightened.

[0082] Next, as shown in Figure 10(f), sprayed concrete is sprayed from the front side of the net 22 to construct a rigid wall 20 that includes a portion of the reinforcing material 12, the protruding portion 41a of the anchor 41, the net 22, the plate 23, and the nut 24 inside.

[0083] As with the first and second embodiments, the construction method according to the third embodiment eliminates the need for scaffolding, formwork or formwork-internal structures, L-shaped steel beams, formwork fixing hardware, separators, and other temporary materials for pouring concrete as rigid walls, which were previously required for constructing structures. This reduces the cost of scaffolding and temporary materials, and shortens the construction period required for constructing the scaffolding and temporary materials, while also enabling the construction of a reinforced embankment structure 40 in which horizontal protrusion of the reinforced embankment 2 due to a force such as a specified earthquake is suppressed.

[0084] While the preferred embodiments of the present invention have been described above, the present invention is not limited to these examples. It is clear that those skilled in the art can conceive of various modifications and alterations within the scope of the technical ideas described in the claims, and it is understood that these also fall within the technical scope of the present invention.

[0085] Furthermore, the effects described herein are merely descriptive or exemplary and are not limiting. In other words, the technology according to the present disclosure may achieve other effects that are apparent to those skilled in the art from the description of this specification, in addition to or in place of the above-described effects.

[0086] The following configurations also fall within the technical scope of the present disclosure. (1) A structure: A reinforced embankment including an embankment and a reinforcing material covering the embankment, the reinforced embankment being stacked in two or more layers in the vertical direction; a support member whose horizontal position relative to the reinforcing embankment is fixed and which includes a protruding portion protruding from a front surface of the reinforcing embankment; a covering member for covering the front surface of the two or more reinforced embankments; a fixing portion for fixing the protruding portion of the support member and the covering member in two or more of the reinforced embankments; A rigid wall including at least the covering member and the reinforcing material on the front surface of the reinforced embankment. structure. (2) The reinforced embankment includes a welded wire mesh provided between the embankment and the reinforcing material, The structure described in (1) above, wherein the support member has an engagement portion that engages with the welded wire mesh. (3) A structure as described in (1) or (2) above, wherein the support member has a claw portion that extends in a direction different from the front-to-back direction of the reinforcing embankment and is embedded in the embankment. (4) The masking member has a mesh structure, The structure described in any one of (1) to (3) above, wherein the fixing portion has a plate on the outer surface side of the cover member that is larger than the mesh size of the mesh structure, and fixes the plate to the protrusion of the support member. (5) A construction method for a structure, laying a reinforcement material and installing a welded wire mesh inside the reinforcement material; engaging a support member with the welded wire mesh; a step of constructing a reinforced embankment in which the protruding portions of the support members protrude from the front surface by pouring embankment material inside the reinforcement material and compacting it; repeating the steps from laying the reinforcing material to constructing the reinforced embankment, and constructing at least one other reinforced embankment above the reinforced embankment, with the protruding portion of the support member protruding from the front surface; a step of attaching a covering member by fixing the covering member to the protruding portions of the two or more support members so as to cover the front surfaces of the two or more reinforced embankments; spraying concrete from the outside of the covering member; A method of constructing a structure, including: (6) A construction method for a structure, laying a reinforcing material and pouring an embankment material inside the reinforcing material; a step of installing a support member such that the claws of the support member are embedded in the embankment and the protrusions of the support member protrude from the front surface of the reinforcing material; a step of compacting the embankment to construct a reinforced embankment in which the protruding portions of the support members protrude from a front surface; repeating the steps from laying the reinforcing material to constructing the reinforced embankment, and constructing at least one other reinforced embankment above the reinforced embankment, with the protruding portion of the support member protruding from the front surface; a step of attaching a covering member by fixing the covering member to the protruding portions of the two or more support members so as to cover the front surfaces of the two or more reinforced embankments; spraying concrete from the outside of the covering member; A method of constructing a structure, including: [Industrial Applicability]

[0087] The present invention is useful for simplifying the construction of structures including reinforced embankment structures. [Explanation of symbols]

[0088] 1, 30, 40 Reinforced embankment structure 2. Reinforced embankment 10 Embankment 11 Wire Mesh 12 Reinforcement 20 Hard wall 21 Hook 22 Net 23 Plate 24 Nut 31, 41 Anchor

Claims

1. A structure comprising: a reinforced embankment including an embankment and a reinforcing material covering the embankment, the reinforced embankment being stacked in two or more layers in the vertical direction; a support member whose horizontal position relative to the reinforcing embankment is fixed and which includes a protruding portion protruding from a front surface of the reinforcing embankment; a covering member for covering the front surface of the two or more reinforced embankments; a fixing portion for fixing the protruding portion of the support member and the covering member in two or more of the reinforced embankments; A rigid wall including at least the covering member and the reinforcing material on the front surface of the reinforced embankment. structure.

2. The reinforced embankment includes a welded wire mesh provided between the embankment and the reinforcing material, The structure according to claim 1 , wherein the support member includes an engagement portion that is engaged with the welded wire mesh.

3. 2. The structure according to claim 1, wherein the support member includes a claw portion that extends in a direction different from the front-to-rear direction of the reinforcing embankment and is embedded in the embankment.

4. the cover member has a mesh structure, The fixing portion is provided on the outer surface side of the cover member with a plate having a mesh size larger than that of the mesh structure, and fixes the plate and the protruding portion of the support member. A structure according to any one of claims 1 to 3.

5. A construction method for a structure, comprising: laying a reinforcement material and installing a welded wire mesh inside the reinforcement material; engaging a support member with the welded wire mesh; a step of constructing a reinforced embankment in which the protruding portions of the support members protrude from the front surface by pouring embankment material inside the reinforcement material and compacting it; repeating the steps from laying the reinforcing material to constructing the reinforced embankment, and constructing at least one other reinforced embankment above the reinforced embankment, with the protruding portion of the support member protruding from the front surface; a step of attaching a covering member to cover the front surfaces of the two or more reinforced embankments by fixing the covering member to the protruding portions of the two or more support members; spraying concrete from the outside of the covering member; A method of constructing a structure, including:

6. A construction method for a structure, comprising: laying a reinforcing material and pouring an embankment material inside the reinforcing material; a step of installing a support member such that the claw portion of the support member is embedded inside the embankment material and the protrusion portion of the support member protrudes from the front surface of the reinforcing material; a step of compacting the embankment to construct a reinforced embankment in which the protruding portions of the support members protrude from a front surface; repeating the steps from laying the reinforcing material to constructing the reinforced embankment, and constructing at least one other reinforced embankment above the reinforced embankment, with the protruding portion of the support member protruding from the front surface; a step of attaching a covering member to cover the front surfaces of the two or more reinforced embankments by fixing the covering member to the protruding portions of the two or more support members; spraying concrete from the outside of the covering member; A method of constructing a structure, including:

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