Slope protection structures and slope protection methods

Abstract

This invention provides a slope protection structure and method that can achieve high protective strength and reduce construction time by integrating the reinforcing part and filling material inside a fabric formwork. [Solution] A slope protection structure comprising a protective section laid on a slope to protect the slope, and a fixing section that restricts the movement of the protective section relative to the slope, wherein the protective section comprises a bag-shaped cloth formwork having a front surface and a back surface, a reinforcing section housed within the cloth formwork having a plurality of first reinforcing members extending in a first direction and a plurality of second reinforcing members extending in a second direction and intersecting the first reinforcing members, and a filling material filled within the cloth formwork to embed the reinforcing section, wherein the fixing section comprises an anchor material provided so as to protrude a portion from the slope and supporting the intersection of the first reinforcing members and the second reinforcing members, and a fixing member that fixes the intersection to the anchor material.

Description

Technical Field

[0001] The present invention relates to a slope protection structure and a slope protection method for preventing slope collapse and topsoil runoff.

Background Art

[0002] As a conventional slope protection method, for example, as shown in Patent Document 1, a cloth formwork is arranged on the upper surface of a slope, and a solidifying material (filling material) such as mortar or concrete is filled into the cloth formwork and hardened, thereby forming an integral protection part by the solidifying material and the cloth formwork, and a structure for covering and protecting the slope by this is known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the slope protection method disclosed in Patent Document 1, by embedding horizontal reinforcing bars extending in a direction orthogonal or substantially orthogonal to the slope inclination direction (hereinafter referred to as the "lateral direction") in a solidifying material such as mortar or concrete constituting the protection part, these horizontal reinforcing bars function as reinforcing bars, and the strength in the lateral direction is ensured. Also, regarding the direction along the slope inclination direction (hereinafter referred to as the "longitudinal direction"), in order to improve the strength of the protection part in the longitudinal direction, a method of arranging and fixing longitudinal reinforcing bars along the longitudinal direction on the surface side which is the outside of the cloth formwork is adopted.

[0005] According to the slope protection configuration disclosed in Patent Document 1, since the vertical reinforcing bars are located outside the strip formwork, the strength is not adequately ensured by the integration of the reinforcing bars and filling material placed inside the strip formwork, and the effect as internal reinforcement is limited, resulting in the problem that the structure cannot fully exhibit its strength. In addition, since it is necessary to install the vertical reinforcing bars outside the strip formwork, there is a problem that construction is time-consuming.

[0006] This invention has been made in view of the above-mentioned problems, and aims to provide a slope protection structure and slope protection method that can obtain high protective strength and reduce construction time by integrating the reinforcing part and filling material inside the fabric formwork. [Means for solving the problem]

[0007] The slope protection structure according to the present invention comprises a protective part laid on a slope to protect the slope, and a fixing part that restricts the movement of the protective part relative to the slope, wherein the protective part comprises a bag-shaped cloth formwork having a front surface and a back surface, a reinforcing part housed within the cloth formwork having a plurality of first reinforcing members extending in a first direction and a plurality of second reinforcing members extending in a second direction and intersecting the first reinforcing members, and a filling material filled within the cloth formwork to embed the reinforcing part, and the fixing part comprises an anchor member provided so as to protrude a portion from the slope and supporting the intersection of the first reinforcing members and the second reinforcing members, and a fixing member that fixes the intersection to the anchor member.

[0008] Another aspect of the present invention relates to a slope protection structure which has a first housing portion that extends along the first direction and accommodates each of the first reinforcement members, and a second housing portion that extends along the second direction and accommodates each of the second reinforcement members, and is characterized by having a housing portion formed in a grid shape by a plurality of the first housing portions and a plurality of the second housing portions.

[0009] Another aspect of the present invention relates to a slope protection structure in which the fixing portion comprises a cylindrical holding member that penetrates the anchor material and supports the intersection, and the first reinforcement member and the second reinforcement member each have an annular portion with a hole formed therein that penetrates the holding member.

[0010] Another aspect of the present invention relates to a slope protection structure in which the first reinforcement member and the second reinforcement member each have an annular portion and are arranged so as to overlap the annular portions in the direction of penetration of the holding member, and the annular portions of the first reinforcement member and the second reinforcement member each have a curved shape with respect to a plane perpendicular to the penetration direction so as to overlap in a concave-concave

[0011] Another aspect of the present invention relates to a slope protection structure characterized in that the first reinforcement member and the second reinforcement member each have a connecting member forming the annular portion and a reinforcing bar connecting adjacent connecting members.

[0012] Another aspect of the present invention relates to a slope protection structure characterized in that the first reinforcement member and the second reinforcement member have spacers in the reinforcement bars for forming a gap between the surface portion and the back portion.

[0013] The slope protection method according to the present invention is a slope protection method for providing a slope protection structure to protect a slope, and is characterized by comprising the steps of: driving anchor material into the slope in a predetermined arrangement; laying a cloth formwork on the slope while locked to the anchor material, having a plurality of first housing sections extending in a first direction and a plurality of second housing sections extending in a second direction, and having housing sections formed in a grid shape by the plurality of first housing sections and the plurality of second housing sections; arranging a first reinforcing member extending in the first direction in the first housing section and a second reinforcing member extending in the second direction in the second housing section, respectively, and fixing the intersection of the first reinforcing member and the second reinforcing member to the anchor material; and driving a filling material into the housing section of the cloth formwork. [Effects of the Invention]

[0014] The slope protection structure according to the present invention comprises a protective section laid on a slope to protect the slope, and a fixing section that restricts the movement of the protective section relative to the slope, wherein the protective section comprises a bag-shaped cloth formwork having a front surface and a back surface, a reinforcing section housed within the cloth formwork having a plurality of first reinforcing members extending in a first direction and a plurality of second reinforcing members extending in a second direction and intersecting the first reinforcing members, and a filling material filled within the cloth formwork to embed the reinforcing section, wherein the fixing section comprises an anchor member provided so as to protrude a portion from the slope to support the intersection of the first reinforcing members and the second reinforcing members, and a fixing member that fixes the intersection to the anchor member, thereby enabling the reinforcing section and filling within the cloth formwork Material The protective section, formed more integrally, is fixed to the slope by multiple anchor materials, and the slope protection structure constructed in this way can provide high protective strength against the slope.

[0015] According to another aspect of the present invention, the slope protection structure has a first housing portion that extends along the first direction and accommodates each of the first reinforcement members, and a second housing portion that extends along the second direction and accommodates each of the second reinforcement members, and the housing portion is formed in a grid shape by a plurality of the first housing portions and a plurality of the second housing portions, so that a grid-shaped reinforcing bar structure is formed within the housing portion and excellent protective strength can be ensured in all directions.

[0016] According to another aspect of the slope protection structure of the present invention, the fixing portion includes a cylindrical holding member as the fixing member that penetrates the anchor material and supports the intersection, and the first reinforcing member and the second reinforcing member have annular portions with holes that penetrate the holding member, thereby making it possible to maintain a constant height position of the reinforcing members constituting the reinforcement portion from the slope, thereby making it possible to ensure a uniform thickness of the cover of the filling material over the reinforcement portion within the housing portion, and improving the strength and reliability of the overall structure.

[0017] According to another aspect of the slope protection structure of the present invention, the first reinforcement member and the second reinforcement member each have an annular portion and are arranged so as to overlap the annular portions in the direction of penetration of the holding member, and the annular portions of the first reinforcement member and the second reinforcement member each have a curved shape with respect to a plane perpendicular to the penetration direction so as to overlap in an interlocking manner, thereby suppressing an increase in thickness at the intersection of the reinforcement members and the surrounding areas of the reinforcement portion, thereby enabling the formation of a uniform thickness and flat reinforcement frame for the entire reinforcement portion, and enabling the protection portion as a whole to have a uniformly flat structure, thus providing good layability of the protection portion on the slope.

[0018] According to another aspect of the slope protection structure of the present invention, the first reinforcement member and the second reinforcement member each have a connecting member forming the annular portion and a reinforcing bar connecting adjacent connecting members, thereby improving the workability of tying together the members constituting the reinforcement portion and enabling the reinforcement portion to be securely fixed to the fixing portion.

[0019] According to the slope protection structure according to another aspect of the present invention, the first rib member and the second rib member have spacers for forming a gap between the surface portion and the back surface portion on the reinforcing bar, so that the rib members constituting the reinforcing portion are stably positioned at the central portion in the thickness direction of the filling material in the accommodating portion, and are integrated with the filling material while being covered with the filling material having a uniform thickness, thereby improving the strength as a structure.

[0020] According to the slope protection method according to the present invention, it is a slope protection method for providing a slope protection structure for protecting the slope with respect to the slope, the method comprising: a step of driving an anchor material on the slope in a predetermined arrangement; a plurality of first accommodating portions extending along a first direction; and a plurality of second accommodating portions extending along a second direction, the method further comprising: laying a cloth formwork having an accommodating portion formed in a lattice shape by the plurality of first accommodating portions and the plurality of second accommodating portions on the slope in a state of being locked to the anchor material; arranging a first rib member extending in the first direction in the first accommodating portion and a second rib member extending in the second direction in the second accommodating portion, and fixing an intersection portion between the first rib member and the second rib member to the anchor material; and placing a filling material in the accommodating portion of the cloth formwork. By including these steps, a protection portion more integrally formed with a reinforcing portion and a filling Material is fixed to the slope by a plurality of anchor materials, and the slope protection structure thus constructed can obtain a high protection strength with respect to the slope and can save the labor of construction.

Brief Description of the Drawings

[0021] [Figure 1] It is a cross-sectional perspective view showing a slope protection structure according to an embodiment of the present invention. [Figure 2] It is a plan view showing a cloth formwork of a slope protection structure according to an embodiment of the present invention. [Figure 3] It is a schematic cross-sectional view of a cloth formwork of a slope protection structure according to an embodiment of the present invention, (a) is a cross-sectional view taken along line A-A in FIG. 2, and (b) is a cross-sectional view taken along line B-B in FIG. 2. [Figure 4] It is a perspective view showing the configuration inside the protection part of the slope protection structure according to an embodiment of the present invention. [Figure 5] It is a perspective view showing the configuration of the intersection part of the reinforcing members of the slope protection structure according to an embodiment of the present invention. [Figure 6] It is an explanatory view showing the connecting member of the slope protection structure according to an embodiment of the present invention. (a) is a view taken in the direction of arrow A in FIG. 6(c), (b) is a view taken in the direction of arrow B in FIG. 6(c). (c) is a perspective view, and (d) is a plan view. [Figure 7] It is an explanatory view showing the configuration of the intersection part of the reinforcing members of the slope protection structure according to an embodiment of the present invention. (a) is an exploded perspective view, and (b) is a side view. [Figure 8] It is a partial cross-sectional side view showing the configuration of the protection part, the fixing part, and the filling material at the intersection part of the reinforcing members of the slope protection structure according to an embodiment of the present invention. [Figure 9] It is a partial cross-sectional side view showing the steps of the slope protection method according to an embodiment of the present invention. (a) is a side view showing step 1, and (b) is a side view showing step 2. [Figure 10] It is a partial cross-sectional side view showing step 3 of the slope protection method according to an embodiment of the present invention. [Figure 11] It is a partial cross-sectional side view showing step 4 of the slope protection method according to an embodiment of the present invention. [Figure 12] It is a partial cross-sectional side view showing step 5 of the slope protection method according to an embodiment of the present invention. [Figure 13] It is a partial cross-sectional side view showing the steps of the slope protection method according to an embodiment of the present invention. (a) is a side view showing step 6, and (b) is a side view showing step 7.

Mode for Carrying Out the Invention

[0022] The slope protection structure 1 according to this embodiment is configured to form a protective section 3 by enclosing and embedding a reinforcing section 21, which is arranged in a grid pattern within a fabric formwork 11, in a filler material 2 and hardening it, thereby providing high protective strength against the slope S. The shapes of the figures referenced in the following description are conceptual or schematic diagrams for explaining preferred shapes and dimensions, and the dimensional ratios do not necessarily match the actual dimensional ratios. In other words, the dimensional ratios of each component of the slope protection structure 1 according to this embodiment are not limited to the dimensional ratios shown in the drawings.

[0023] The configuration of the slope protection structure 1 will be explained with reference to Figures 1 to 8. In the following, in the slope protection structure 1 provided for the slope S, the direction along the slope direction of the slope S (see Figure 1, arrow A1) will be referred to as the "vertical direction," and the direction along the contour lines of the slope S (a direction perpendicular or nearly perpendicular to the slope direction of the slope S, see Figure 1, arrow A2) will be referred to as the "horizontal direction." Furthermore, in the vertical direction, the shoulder side (upper or higher side) of the slope S will be referred to as "up," and the toe side (downward or lower side) of the slope S will be referred to as "down."

[0024] As shown in Figure 1, the slope protection structure 1 comprises a protective section 3 laid on the slope S to protect the slope S, and a fixing section 4 that restricts the movement of the protective section 3 relative to the slope S.

[0025] The protective section 3 comprises a fabric formwork 11 that covers a predetermined area of ​​the slope S, a reinforcing section 21 housed inside the fabric formwork 11, and a filling material 2 that is filled into the fabric formwork 11 to embed the reinforcing section 21.

[0026] The fabric formwork 11 is formed in a sheet-like manner as a whole, so as to be able to cover the slope S to be protected, and extends in predetermined dimensions in both the longitudinal and transverse directions. As shown in Figures 1 and 2, the fabric formwork 11 is formed in elongated lengths in both the longitudinal and transverse directions. The fabric formwork 11 is made of a flexible material and can be stored by folding it into a strip or rolling it into a cylinder.

[0027] As shown in Figures 2 and 3(a) and (b), the fabric formwork 11 is composed of a rectangular surface fabric 12 having predetermined dimensions in the vertical and horizontal directions, and a backing fabric 13 formed to be the same size and shape as the surface fabric 12. Thus, in this embodiment, the surface portion 12A of the fabric formwork 11 is formed by the surface fabric 12, and the back portion 13A of the fabric formwork 11 is formed by the backing fabric 13. The surface fabric 12 and the backing fabric 13 are overlapped and integrated by sewing their periphery edges together, forming a bag-like structure. As a result, the fabric formwork 11 has a frame space 14 between the surface fabric 12 and the backing fabric 13. A filler material 2 such as concrete or mortar is filled into the frame space 14 through an injection port (not shown) provided in either the surface fabric 12 or the backing fabric 13. In other words, one or more injection ports for injecting the filler material 2 are provided at predetermined locations on the fabric formwork 11.

[0028] Both the surface fabric 12 and the back fabric 13 are made of high-strength synthetic woven fabric, and fabric formwork 11 using this woven fabric, such as Fabriform (registered trademark) and Belter (registered trademark), can be used. These fabric formwork 11 have sufficient resistance to the filling pressure when mortar or concrete is filled as the filler material 2 into the formwork space 14. In addition, the surface fabric 12 and the back fabric 13 maintain the fluidity of the filler material 2 well, allowing it to be filled into the formwork space 14 with a uniform thickness. Furthermore, since only the mixing water can be discharged through the gaps in the woven fabric, the water-cement ratio (W / C) is reduced, the curing time is shortened, and the strength of the filler material 2 can be properly maintained.

[0029] The fabric formwork 11 is composed of a double-woven fabric including a surface fabric 12 and a back fabric 13. The two fabrics are joined together by multiple binding threads 11a, so that the distance between the two fabrics is kept constant. With this configuration, a frame space 14 is formed between the surface fabric 12 and the back fabric 13 in the fabric formwork 11. The frame space 14 is divided (partially divided) in a grid-like manner along the vertical and horizontal directions by the binding threads 11a provided between the surface fabric 12 and the back fabric 13. In the grid-like division of the frame space 14, adjacent squares are connected to each other, so that the filler material 2 injected from the injection port spreads throughout the entire frame space 14.

[0030] In this embodiment, the surface portion 12A and the back portion 13A of the fabric formwork 11 are formed from surface fabric 12 and back fabric 13, respectively. However, the formation structure of the surface portion 12A and the back portion 13A in the fabric formwork 11 is not limited to this embodiment. The fabric formwork 11 may, for example, be constructed by folding a single piece of fabric to form a bag-like surface portion 12A and back portion 13A.

[0031] The fabric formwork 11 is provided with a grid-like storage section 15 as part of the frame space 14. The storage section 15 is made up of the unstitched portions of the surface fabric 12 and back fabric 13 that constitute the fabric formwork 11, that is, the unformed portions of the binding thread 11a, and is formed in a straight line along the vertical and horizontal directions between the two fabrics. In other words, the storage section 15 has a grid-like structure along the vertical and horizontal directions of the fabric formwork 11. The storage section 15 forms grid-like protrusions that project outwards from the general section 20, which is divided into a grid pattern in the frame space 14.

[0032] As shown in Figure 3(a), the storage section 15 has a front opening 16 provided in the surface fabric 12 and a back opening 17 provided in the back fabric 13. The front opening 16 and the back opening 17 are circular openings and are arranged opposite each other. ofShort cylindrical front sleeves 18 and back sleeves 19 are joined to the edges, respectively. The front sleeves 18 and back sleeves 19 extend from the front opening 16 and back opening 17, respectively. The front sleeves 18 and back sleeves 19 become the parts that are folded into the frame space 14 (storage section 15). The front sleeves 18 and back sleeves 19 are made of the same material as, for example, the surface fabric 12 and the back fabric 13. This is just one example, but these sleeves 18 and 19 have dimensions of a width (outer diameter) of 10 to 20 cm and a vertical length of 20 to 30 cm.

[0033] With this configuration, the fabric formwork 11 can be secured to the slope S by inserting the head (upper end portion) of the anchor material 31, which will be described later, into the slope S through the back opening 17 of the back fabric 13. In addition, the components of the reinforcing part 21 and the holding member 41, which will be described later, can be housed inside the fabric formwork 11 by inserting them through the front opening 16 of the surface fabric 12.

[0034] As shown in Figure 3(b), the housing section 15 is formed by pre-cutting the binding threads 11a that connect and restrain the surface fabric 12 and back fabric 13 constituting the fabric formwork 11. This creates a space between the surface fabric 12 and the back fabric 13 that can be expanded in the width and thickness directions relative to the plane, forming the housing section 15, which can accommodate the filler material 2, the components of the reinforcing section 21, and the holding members 41. In the general section 20 of the fabric formwork 11, where a grid of squares is formed, the thickness when the filler material 2 is filled is determined by the binding threads 11a. However, in the housing section 15, there is no restraint by the binding threads 11a, so when the filler material 2 flows in, it expands in the thickness direction compared to other surface areas, forming a convex shape on the surface side of the fabric formwork 11.

[0035] As shown in Figure 4, the reinforcing section 21 has a plurality of first reinforcing members, or vertical reinforcing members 21A, which extend along the first direction, the longitudinal direction, and a plurality of second reinforcing members, or horizontal reinforcing members 21B, which extend along the second direction, the transverse direction, and intersect with the vertical reinforcing members 21A. The vertical reinforcing members 21A and the horizontal reinforcing members 21B are planar reinforcing frame structures arranged within a housing section 15 formed between the surface fabric 12 and the back fabric 13 of the fabric formwork 11. That is, the fabric formwork 11 has a bag-shaped first housing section 15A that extends along the longitudinal direction and accommodates each vertical reinforcing member 21A, and a bag-shaped second housing section 15B that extends along the transverse direction and accommodates each horizontal reinforcing member 21B, and has a housing section 15 formed in a grid pattern by a plurality of first housing sections 15A and a plurality of second housing sections 15B. The first housing section 15A and the second housing section 15B form an intersecting housing section 15C at their intersections.

[0036] As shown in Figures 4 and 5, the vertical reinforcement member 21A and the horizontal reinforcement member 21B each have a reinforcing bar 22 arranged along the extension direction of the housing 15, a spacer 23 attached to the middle of the reinforcing bar 22, and a connecting member 24 that connects adjacent reinforcing bars 22 in the extension direction.

[0037] The reinforcing bar 22 is a solid, rod-shaped member with male threads formed on its outer circumference, and is a threaded deformed reinforcing bar that can be screwed into a connecting member 27 having a female thread portion such as a nut. The reinforcing bar 22 is galvanized on its outer surface. The reinforcing bar 22 consists of a long wire or rod. The length of the reinforcing bar 22 is preferably about 1500 mm. A spacer 23 is attached to the middle of the reinforcing bar 22 in the longitudinal direction.

[0038] The spacer 23 is a component for positioning the reinforcing bar 22 approximately in the center between the surface fabric 12 and the back fabric 13 of the fabric formwork 11. The spacer 23 consists of a plurality of curved frame members 23a that form a spindle shape, and holding parts 23b connected to both ends of the frame members 23a. The plurality of frame members 23a are elongated plate members, with their longitudinal direction being the direction of extension of the reinforcing bar, and have a curved shape that forms an arch from both ends in the longitudinal direction to the center, with both ends in the longitudinal direction connected to the holding parts 23b. The plurality of frame members 23a are arranged at predetermined intervals in the circumferential direction centered on the reinforcing bar 22 when viewed in the axial direction of the reinforcing bar 22, forming an approximately spindle shape. The holding part 23b is a plate member formed in an annular shape to form a hole for holding.

[0039] The spacer 23 is detachably held on the reinforcing bar 22 with the reinforcing bar 22 passing through the holding hole of the holding portion 23b. The spacer 23 is formed to have a smaller diameter than the width and thickness dimensions of the first housing portion 15A and the second housing portion 15B in which the reinforcing bar is housed. The spacer 23 functions to position the reinforcing bar 22 approximately in the center between the surface fabric 12 and the back fabric 13 when housed in the housing portion 15. In other words, the spacer 23 holds the position of the reinforcing bar 22 in the center in the thickness direction of the filling material 2 that is filled in the housing portion 15.

[0040] As shown in Figure 6, the connecting member 24 has a ring-shaped annular portion 25 that forms the hole 25A, and a pair of support shaft portions 26 that extend linearly outward from the annular portion 25 toward the reinforcing bars 22 that are connected to each other. The pair of support shaft portions 26 are located coaxially with the reinforcing bars 22 that are connected to each other by the connecting member 24.

[0041] As shown in Figure 6, the connecting member 24 is formed by welding the ends of two reinforcing bars. More specifically, each reinforcing bar forming the connecting member 24 has a straight section that forms the support shaft section 26 and a roughly semicircular curved section that forms half of the annular section 25. The two reinforcing bars are arranged in a point-symmetric manner with respect to the center of the annular section 25 so that their respective curved sections form the annular section 25, and the ends of the curved sections of each reinforcing bar are fixed from the side to the straight section and the bent section of the other reinforcing bar by welding, thereby forming an integrated connecting member 24. The curved section of each reinforcing bar has a gentle, roughly V-shape (mountain shape) in plan view, and the annular section 25 has a roughly rhombic shape in plan view (see Figure 6(c)). Thus, the annular section 25 is a part formed by connecting two round bar-shaped reinforcing bars by curving parts of each bar to form an annular shape. The two reinforcing bars forming the connecting member 24 are, for example, threaded deformed steel bars similar to reinforcing bar 22.

[0042] The vertical reinforcement member 21A and the horizontal reinforcement member 21B each have an annular portion 25 at the connecting member 24, and are arranged so that the annular portions 25 overlap each other in the vertical direction (perpendicular to the slope S). The annular portions 25 of the vertical reinforcement member 21A and the horizontal reinforcement member 21B have a curved shape with respect to a plane F perpendicular to the vertical direction so that they overlap in a concave-concave engagement state (see Figures 6(a) and (b)). Figure 6(a) is a view in the direction of arrow A in Figure 6(c), and Figure 6(b) is a view in the direction of arrow B in Figure 6(c).

[0043] As shown in Figures 6(a) to 6(d), the annular portion 25 has a gently curved shape (bulging shape) with one side of the annular portion 25 being convex when viewed in the axial direction of the support shaft portion 26 (first direction view), and a gently curved shape (bulging shape) with the other side of the annular portion 25 being convex when viewed in a direction perpendicular to the axial direction of the support shaft portion 26 in a plan view (second direction view). The connecting members 24 that overlap vertically are arranged such that one connecting member 24 is aligned vertically along the axial direction of the pair of support shaft portions 26, and the other connecting member 24 is aligned horizontally along the axial direction of the pair of support shaft portions 26. Furthermore, the connecting members 24 that overlap vertically are arranged such that the convex side of the curved shape of the annular portion 25 is the common side when viewed in the first direction view and the second direction view.

[0044] In this configuration, when the support shaft portions 26 of the two connecting members 24 are aligned in directions that intersect each other and are stacked vertically in a cross shape, the annular portions 25 of the two connecting members 24 come into contact with each other, that is, they engage (concave-concave engagement) by overlapping the curved portions in the first and second views. Due to this engagement configuration of the upper and lower connecting members 24, the pair of support shaft portions 26 of the two connecting members 24 are located on the same plane F. In the example shown in Figures 6(a) and (b), the vertically overlapping connecting members 24 have the centerlines of the pair of support shaft portions 26 located on a common plane F.

[0045] The reinforcing bar 22 and the connecting member 24 are connected via a connecting member 27. The connecting member 27 is a cylindrical member with female threads formed at both ends, and for example, a coupler can be used. The connecting member 27 receives the screw insertion of the end of the reinforcing bar 22 on one side in the longitudinal direction and the screw insertion of the support shaft portion 26 of the connecting member 24 on the other side in the longitudinal direction, thereby connecting the reinforcing bar 22 and the connecting member 24 to each other.

[0046] The vertical reinforcement members 21A and horizontal reinforcement members 21B that constitute the reinforcing section 21 are each comprised of a plurality of straight reinforcing bars 22, spacers 23 that hold each reinforcing bar 22 in a predetermined position within the housing section 15, and connecting members 24 that connect the ends of adjacent reinforcing bars 22 in the extension direction of each reinforcement member. The reinforcing section 21 is constructed as a reinforcement frame in which these reinforcement members are arranged in a grid pattern, resulting in an overall uniform height on a plane.

[0047] As shown in Figures 5 and 7, the fixing portion 4 is provided so as to protrude a portion from the slope S and includes an anchor member 31 that supports the reinforcement member intersection 21C, which is the intersection of the vertical reinforcement member 21A and the horizontal reinforcement member 21B, and a holding member 41 and a fastening member 51 as fixing members 40 that fix the reinforcement member intersection 21C to the anchor member 31. The reinforcement member intersection 21C is the portion where the annular portions 25 of the vertical reinforcement member 21A and the horizontal reinforcement member 21B overlap vertically.

[0048] The anchor material 31 is inserted with its head into the cross-receiving portion 15C of the housing portion 15 through the back opening 17 of the protective portion 3, fixing the protective portion 3 in place. The holding member 41 holds the reinforcing member intersection 21C of the reinforcing portion 21 to the anchor material 31. The fastening member 51 is attached to the head of the anchor material 31 and, together with the holding member 41, fastens the reinforcing member intersection 21C and the fabric formwork 11 to the anchor material 31.

[0049] The anchor material 31 is a solid, rod-shaped member with male threads machined on its outer circumference, and is a threaded deformed steel bar that can be fastened with nuts or the like. The anchor material 31 has a zinc-plated outer surface. In this embodiment, the anchor material 31 is configured to have an outer diameter of 19 to 25 mm and a length of 2000 to 5000 mm, and is installed so that its head protrudes approximately 200 mm from the surface of the slope S.

[0050] The holding member 41 comprises a fixed base 42, an insertion cylinder 43, and a steel pipe 45. The holding member 41 is inserted into the cross-receiving section 15C through the front opening 16 of the fabric formwork 11. The fixed base 42, the insertion cylinder 43, and the steel pipe 45 are arranged concentrically or substantially concentrically so that their central axes coincide or substantially coincide with those of the anchor material 31.

[0051] The fixing base 42 is a cylindrical body of a predetermined length made of a plastic material such as polyvinyl chloride resin. The inner diameter of the fixing base 42 is set to, for example, 125 mm. The fixing base 42 is placed on the slope S via the back cloth 13 of the cloth formwork 11, with the heads of the anchor members 31 protruding from the slope S inserted through it. Inside the fixing base 42, a back sleeve 19 is passed through from the back cloth 13 inward (towards the inside of the cross-receiving section 15C).

[0052] The insertion tube 43 is a cylindrical body that is smaller in diameter than the fixing base 42 and longer than the fixing base 42, and is made of a plastic material such as polyvinyl chloride resin. The inner diameter of the insertion tube 43 is set to, for example, 75 mm. The insertion tube 43 is inserted into the inside of the fixing base 42 and installed on the slope S with the anchor material 31 passing through it. The insertion tube 43 is provided with its upper part protruding upward from the fixing base 42 and its upper end positioned at approximately the same height as the surface cloth 12. The internal space 44 of the insertion tube 43 is filled with a foam U made of a foamed resin material such as polyurethane.

[0053] The insertion tube 43 is inserted into the inwardly folded back sleeve 19, and the back sleeve 19 is positioned inside so as to cover the upper end of the insertion tube 43 at its top. Furthermore, at the top of the insertion tube 43, the front sleeve 18, which is folded inward from the surface fabric 12, is inserted further inside the back sleeve 19 that is folded back towards the inner circumference of the insertion tube 43.

[0054] The steel pipe 45 is a cylindrical member with a smaller diameter than the fixed base 42 and a larger diameter than the insertion tube 43, and is made of a metal material such as steel. The inner diameter of the steel pipe 45 is set to, for example, 100 mm. The steel pipe 45 is positioned above the fixed base 42, with the upper part of the insertion tube 43 inside it, and covers the upper part of the insertion tube 43. The upper end of the steel pipe 45 is positioned at the same or approximately the same height as the upper end of the insertion tube 43. and The back sleeve 19 is positioned in between.

[0055] As described above, the holding member 41, with its fixed base 42, insertion tube 43, and steel pipe 45, forms a cylindrical support tube that allows the anchor material 31 to pass through and supports the reinforcement member intersection 21C. The holding member 41 supports the reinforcement member intersection 21C at a position midway along the central axis direction (axial direction of the anchor material 31) of the cylindrical holding member 41, with the upper and lower annular portions 25, which constitute the reinforcement member intersection 21C, passing through them.

[0056] As shown in Figures 7(a), (b), and 8, the vertical reinforcement member 21A and the horizontal reinforcement member 21B each have an annular portion 25 and are arranged so as to overlap the annular portions 25 in the direction of penetration of the holding member 41. The upper and lower annular portions 25 are supported from below by the fixing base 42, with the insertion cylinder 43, which extends upward from the fixing base 42, passing through them. More specifically, of the upper and lower annular portions 25, the lower annular portion 25 is supported by the fixing base 42 in a state where it is partially in contact with the upper opening end of the fixing base 42 in its circumferential direction. The apex of the lower annular portion 25, which has a downwardly convex curved or bent shape in the axial view of the support shaft portion 26 extending from the upper annular portion 25, is the contact point with the upper opening end of the fixing base 42. The upper annular portion 25 is supported in a state where it overlaps the lower annular portion 25.

[0057] Furthermore, the steel pipe 45 into which the upper part of the insertion cylinder 43 is inserted is supported from below by the upper and lower annular portions 25, which are supported from below by the fixing base 42. The steel pipe 45 is supported in a state where it is in partial contact with the upper annular portion 25 in the circumferential direction. The steel pipe 45 is supported on the upper annular portion 25 with the top of the annular portion 25, which has an upwardly convex curved or bent shape in an axial view of the support shaft portion 26 extending from the lower annular portion 25, in contact with its lower open end. In this way, the holding member 41 supports the upper and lower annular portions 25, which pass through the insertion cylinder 43, by sandwiching them from above and below by the fixing base 42 and the steel pipe 45.

[0058] As described above, the retaining member 41 that supports the reinforcement member intersection 21C is embedded in the filler material 2 together with the vertical reinforcement member 21A and the horizontal reinforcement member 21B. Of the components that make up the retaining member 41, the insertion cylinder 43 is located on the outside of the filler material 2 via the back sleeve 19, and its internal space 44 is a cavity through which the anchor material 31 passes.

[0059] The fastening member 51 includes a bearing member 52, a cover member 53, and a spherical nut 54. The fastening member 51 is attached to the head of the anchor member 31 that protrudes from the slope S. The bearing member 52 and the cover member 53 are arranged concentrically or substantially concentrically with respect to the anchor member 31 so that their central axes coincide or substantially coincide.

[0060] As shown in Figures 7(a), (b) and 8, the bearing member 52 is a metal member composed of a concave spherical seating surface having a circular flange. The bearing member 52 has a cylindrical body portion 52A which is open at the top and bottom and gradually decreases in diameter from the top to the bottom, and a flange portion 52C provided in the middle of the cylindrical body portion 52A. In the bearing member 52, the portion of the cylindrical body portion 52A above the flange portion 52C is a threaded cylinder portion with a threaded portion formed on its outer circumference. The surface of the bearing member 52 may be zinc-plated to improve corrosion resistance. The bearing member 52 has the head of the anchor material 31 passing through the cylindrical body portion 52A. A spherical nut 54 is screwed onto the tip of the anchor material 31 that has passed through the bearing member 52.

[0061] The bearing member 52 is a cylindrical body portion 52A, and is smaller than the flange portion 52C. under The side portion is inserted into the insertion cylinder 43 from above, and the flange portion 52C is supported by the upper open end of the insertion cylinder 43. The lower part of the cylindrical body portion 52A is inserted into the front sleeve 18 which is folded inward from the surface fabric 12 (inside the cross-receiving portion 15C). The front sleeve 18 is located inside the back sleeve 19 which is folded back from the upper end of the insertion cylinder 43, and its tip side (open end side) extends outward (downward) from the open end of the back sleeve 19.

[0062] The cover material 53 is a bowl-shaped member formed in a hemispherical shape and is made of a metal material such as stainless steel. The cover material 53 is positioned with its upper side convex, covering the anchor material 31 and the spherical nut 54 from above. A threaded portion is formed on the inner circumferential surface of the lower part of the cover material 53, and the cover material 53 is fixed to the bearing material 52 by screwing the threaded portion into the threaded cylinder portion of the bearing material 52, thereby closing the upper opening of the bearing material 52.

[0063] The spherical nut 54 has a hemispherical seating surface 54A. The spherical nut 54 is screwed onto the head of the anchor material 31 and is positioned so that its seating surface 53A is in contact with the inner circumferential surface of the lower end of the cylindrical body portion 52A of the bearing material 52. The inner circumferential surface on the lower end side of the cylindrical body portion 52A of the bearing material 52 serves as a receiving surface 52B that receives contact from the seating surface 54A of the spherical nut 54, and is a curved surface that follows the shape of a hemisphere, corresponding to the shape of the seating surface 54A. The spherical nut 54 closes the lower opening of the cylindrical body portion 52A of the bearing material 52 from the inside (top). The spherical nut 54 passes through the anchor material 31, causing the upper end of the anchor material 31 to protrude upward. The spherical nut 54 is surface-treated, such as with fluororesin coating, to improve its durability.

[0064] In the fastening member 51 configured in this way, the cylindrical body portion 52A of the bearing member 52, the cover material 53, and the spherical nut 54 form a sealed or partially sealed hollow portion 55 around the spherical nut 54 (see Figure 13(b)). The hollow portion 55 is filled with foam U. The foam U is a urethane foam formed by foaming a foamed resin material such as polyurethane into the hollow portion 55. An injection hole 53a for injecting the foamed resin material into the hollow portion 55 is formed at the upper end (top) of the cover material 53.

[0065] The fastening member 51 has a spherical shape at the contact surface between the bearing material 52 and the spherical nut 54, allowing for inclination of the anchor material 31 relative to the bearing material 52, while stably fixing the spherical nut 54, anchor material 31, and bearing material 52.

[0066] The slope protection structure 1 according to this embodiment, having the above configuration, is provided with a lattice-shaped housing section 15 on a fabric formwork 11, and vertical reinforcement members 21A and horizontal reinforcement members 21B and holding members 41 that form a reinforcing section 21 are arranged within the housing section 15. The fabric formwork 11 is formed to be flexible and flat, and has a bag-like structure with its ends closed. By filling the fabric formwork 11 with a filler material 2, the reinforcing section 21 is embedded in the filler material 2. Furthermore, because the fabric formwork 11 is formed to be flexible, the filler material 2 spreads with a uniform thickness along the undulations of the slope S within the frame space 14 of the fabric formwork 11, and a protective section 3 can be formed on the slope S in a tight, gap-free state. As a result, the fabric formwork 11 can exhibit an excellent protective effect on the slope S.

[0067] Furthermore, since the slope protection structure 1 according to this embodiment is configured to have a grid-like reinforcing section 21 arranged within the frame space 14 of the fabric formwork 11, it is not necessary to reinforce the fabric formwork by fixing vertical reinforcing bars to its outer surface after filling it with filler material, as in the conventional method, thus improving constructability. By adopting such a fabric formwork 11, a protection section 3 containing a grid-like reinforcing section 21 with appropriate spacing can be formed with a simple work process, eliminating the need for complex formwork assembly work on site and significantly improving construction efficiency.

[0068] Furthermore, in the slope protection structure 1 according to this embodiment, at the intersection 21C of the vertical reinforcement member 21A and the horizontal reinforcement member 21B, two connecting members 24, each having a curved annular portion 25, are arranged stacked vertically. That is, the annular portions 25 of the vertical reinforcement member 21A and the horizontal reinforcement member 21B are curved with respect to a plane perpendicular to the direction of the central axis of the holding member 41 so that they overlap in a state of mutual interlocking. With this configuration, the dimension in the thickness direction (overlapping direction) of the reinforcement member intersection 21C can be reduced. As a result, the entire reinforcement portion 21 has a uniform thickness, and a flat reinforcement frame can be formed, and the protection portion 3 as a whole can be made uniformly flat, thus providing good layability of the protection portion 3 on the slope S.

[0069] Furthermore, in the reinforcement section 21, the increase in thickness at the intersecting portion 21C of the reinforcing members and its vicinity can be suppressed, the workability of the binding work between the members constituting the reinforcement section 21 can be improved, and the reinforcement section 21 can be securely fixed to the fixing portion 4.

[0070] Furthermore, in a configuration in which two connecting members 24 are stacked, from the viewpoint of reducing the overall thickness of the reinforcing portion 21, it is preferable to have a configuration in which the height positions of the support shaft portions 26 of the vertical reinforcement member 21A and the horizontal reinforcement member 21B are positioned on the same plane by the interlocking of the interlocking grooves and grooves of the upper and lower annular portions 25 that overlap each other. With such a configuration, the height position of the reinforcing bars 22 connected to the support shaft portions 26 from the slope S can be kept constant. As a result, the cover thickness of the filler material 2 over the reinforcing bars 22 within the housing portion 15 is stabilized, and the overall strength and reliability of the structure can be improved. In addition, the reinforcing portion 21 configured in this way can be well housed within the fabric formwork 11.

[0071] In particular, the vertical reinforcement member 21A and the horizontal reinforcement member 21B have spacers 23 on the reinforcing bars 22. By utilizing the spacers 23, it is possible to ensure a uniform cover thickness of the filler material 2 on the reinforcing bars 22 within the housing 15.

[0072] In this embodiment, the slope protection structure 1 has a configuration in which a reinforcing section 21 formed in a grid pattern is arranged inside the housing section 15 via a holding member 41, and the entire circumference is covered with a filler material 2 while ensuring an appropriate cover thickness. As a result, the vertical reinforcement members 21A and horizontal reinforcement members 21B constituting the reinforcing section 21 are stably positioned in the center of the thickness direction of the filler material 2 by the holding member 41 and spacer 23, and the strength of the structure is improved by integrating with the filler material 2.

[0073] In this way, the integration of the vertical reinforcement members 21A and horizontal reinforcement members 21B with the filler material 2 forms a lattice-like reinforced concrete structure, which ensures superior protective strength in all directions compared to conventional technology. Furthermore, by suppressing unevenness in internal reinforcement, the overall structural strength of the protective section 3 can be improved.

[0074] In this embodiment, the slope protection structure 1 is configured such that the surface portion of the fabric formwork 11 other than the housing portion 15 is restrained by connecting threads, thereby suppressing unnecessary bulging of the frame space 14. This makes it possible to reduce the amount of filler material 2 used, and thus reduce construction costs.

[0075] Furthermore, by filling the inside of the retaining member 41 and the fastening member 51 with foam U, it is possible to suppress water and dust intrusion into the inside of the retaining member 41 and the fastening member 51, thereby suppressing corrosion of these members and the anchor material 31.

[0076] In this embodiment, the slope protection structure 1, with the above-described configuration, reduces the amount of filler material 2 used, while the reinforcing parts 21 such as reinforcing bars 22 placed within the housing section 15 are completely covered by the filler material 2 and harden, thereby forming a protective section 3 containing a grid-like reinforced concrete structure. This protective section 3 exhibits high structural strength in all directions and can stably protect the entire slope S. Furthermore, since the protective section 3 is pressed from above by the fastening member 51 via the anchor material 31, its integrity against external forces is improved, and stable strength can be provided to the entire slope S.

[0077] Referring to Figures 8 to 13, the method for protecting the slope S by the slope protection structure 1 according to this embodiment will be described. Figure 8 shows a portion of the configuration of the protective part 3, the fixing part 4, and the filler material 2 at the intersection of the reinforcing members. cross section This is a side view. Figures 9 to 13 are schematic diagrams showing the outline of the slope protection method according to the present invention, with Figure 9(a) showing part of step 1 of the method, Figure 9(b) showing step 2, Figure 10 showing step 3, Figure 11 showing step 4, Figure 12 showing step 5, Figure 13(a) showing step 6, and Figure 13(b) showing step 7. cross section This is a side view. Note that in these drawings, the slope S, which has an incline, is depicted as a horizontal plane.

[0078] The slope protection method described below is a method for providing a slope protection structure 1 to protect the slope S. First, the surface of the slope S is pre-shaped by stacking small sandbags or other treatments. Next, workers drive anchor materials 31 into the slope S at predetermined positions. In this embodiment, the anchor materials 31 are driven in at intervals of approximately 1.5 m. At this time, the anchor materials 31 are driven in so that they are perpendicular to the slope S and the heads of the anchor materials 31 protrude approximately 200 mm from the ground surface (see Figure 9(a)). In this way, the process of driving anchor materials 31 into the slope S at predetermined positions is carried out.

[0079] After the anchor material 31 is driven in, the worker installs the fabric formwork 11 that constitutes the protective section 3 along the slope S. At this time, the fabric formwork 11 is first supported at one end on the lower end side of the slope S, and then unfolded toward the shoulder side of the slope, so that the fabric formwork 11 is securely installed along the slope S without any slack.

[0080] As shown in Figure 9(b), with the top edge of the fabric formwork 11 suspended from the top of the slope by ropes or the like, the head of the anchor material 31 is inserted into the fabric formwork 11 through the back opening 17 of the back sleeve 19 provided on the fabric formwork 11, thereby securing the fabric formwork 11 to the slope S and laying it upward.

[0081] In this process, the folded cloth formwork 11 is pulled up from the bottom edge upward along the slope S, and laid sequentially toward the top edge of the slope S, so that the back opening 17 of the cloth formwork 11 is locked onto the head of the anchor material 31. As described above, the cloth formwork 11 is laid on the slope S while being locked onto the anchor material 31. When laying the cloth formwork 11 on the slope S, a reinforcing mat such as a mesh-like woven material (geogrid) made of fibrous material such as aramid fibers may be laid on the slope S.

[0082] After the fabric formwork 11 is installed on the slope S, as shown in Figure 10, the fixing base 42 is inserted through the front opening 16 formed in the surface fabric 12, and the heads of the anchor members 31 protruding from the back opening 17 are inserted into the fixing base 42, thereby installing the fixing base 42 on the slope S via the back sleeve 19.

[0083] As shown in Figure 11, two connecting members 24 are inserted through the front opening 16 formed in the surface fabric 12, and their respective support shafts 26 are crossed perpendicularly and overlapped, so that the two overlapping annular portions 25 are placed on the upper surface of the fixing base 42. At this time, the back sleeve 19 is configured to pass inside the fixing base 42 and the annular portions 25 of the two connecting members 24, and then be pulled out to the outside of the fabric formwork 11 via the inside of the front sleeve 18 formed in the surface fabric 12.

[0084] Reinforcing bars 22 with spacers 23 attached are inserted through the front opening 16 formed in the surface fabric 12 and arranged in a cross shape with the fixing base 42 in the center. The ends of the reinforcing bars 22 facing each other on either side of the fixing base 42 are connected by adjacent connecting members 24 and 27. As shown in Figures 2 and 3, the reinforcing bars 22 and the connecting members 24 are connected to each other via the connecting members 27, forming integral vertical reinforcement members 21A and horizontal reinforcement members 21B, respectively, and these reinforcement members form an integral lattice-like reinforcement section 21. The reinforcement section 21 is held inside the fabric formwork 11.

[0085] As shown in Figure 12, the insertion tube 43 is inserted from the inside of the back sleeve 19, which is pulled out to the outside of the fabric formwork 11 via the inside of the fixing base 42, and the insertion tube 43 is inserted and fitted so that it is inside the front sleeve 18, the fixing base 42, the annular portions 25 of the two connecting members 24 and the back sleeve 19, and installed in the predetermined position.

[0086] The steel pipe 45 is inserted through the front opening 16 formed in the surface fabric 12 via the front sleeve 18, and after the steel pipe 45 is positioned outside the back sleeve 19, it is placed on the upper surface of the annular portion 25 of the two connecting members 24. At this time, the upper parts of the back sleeve 19 and the front sleeve 18 are each bent and pushed into the inside of the insertion cylinder 43.

[0087] As shown in Figures 13(a) and (b), with the head of the anchor material 31 protruding into the insertion cylinder 43 and the through-hole of the bearing material 52 inserted through it, the upper parts of the back sleeve 19 and the front sleeve 18 are bent and pushed into the inside of the insertion cylinder 43, and the bearing material 52 is fitted inside the pushed-in front sleeve 18.

[0088] Subsequently, the spherical nut 54 is screwed onto the head of the anchor material 31 to tighten the fabric formwork 11, the fastening member 51, and the anchor material 31.

[0089] As described above, the vertical reinforcement member 21A is placed in the first housing section 15A of the fabric formwork 11, and the horizontal reinforcement member 21B is placed in the second housing section 15B, and the reinforcement member intersection 21C is fixed to the anchor material 31 by the holding member 41 and the fastening member 51.

[0090] Next, the filler material 2 is filled in through an injection port provided at the top of the fabric formwork 11. Due to the slope of the embankment S, the filler material 2 flows down from top to bottom within the fabric formwork 11 and gradually accumulates in the frame space 14 at the bottom of the fabric formwork 11, thereby uniformly filling the entire fabric formwork 11 with the filler material 2.

[0091] The filler material 2 that flows into the housing section 15 moves smoothly downward around the reinforcing bars 22, filling the fabric formwork 11, as the spacers 23 maintain the distance between the reinforcing bars 22 and the surface fabric 12 and back fabric 13 of the fabric formwork 11. The filling progresses from the bottom upward. In this way, within the housing section 15 where the reinforcing section 21 is housed, the injected filler material 2 is uniformly filled into the frame space 14 formed around the reinforcing bars 22 by the spacers 23, thereby maintaining a uniform thickness of the filler material 2 covering the reinforcing bars 22. The process of pouring the filler material 2 into the housing section 15 of the fabric formwork 11 is carried out as described above.

[0092] With this slope protection method, the fabric formwork 11 is placed along the surface to be constructed, such as the slope S, and the filling material 2 is pressed into the fabric formwork 11. This causes the fabric formwork 11 to expand uniformly and evenly, and the filling material 2 is evenly and uniformly filled into the fabric formwork 11.

[0093] In the containment section 15, as the filler material 2 is pressed in, the gap between the surface fabric 12 and the back fabric 13 widens, and the vertical reinforcement members 21A and horizontal reinforcement members 21B of the reinforcing section 21 positioned between them act as gap-holding members, forming a predetermined bulge shape. Furthermore, as the gap between the surface fabric 12 and the back fabric 13 widens, the reinforcing section 21, held by the holding member 41, is embedded in the filler material 2 at a predetermined position.

[0094] The lower surface of the fabric formwork 11 has a structure that conforms to the slope S shape, and as the filler material 2 hardens, a protective part 3 having the desired shape is formed.

[0095] After the process of forming the protective part 3, as shown in Figure 8, a process of filling and forming the foam U inside the holding member 41 and the fastening member 51 is performed. In this process, first, the cover material 53 is removed from the bearing member 52 and the spherical nut 54 is removed from the anchor member 31. In this state, foam resin material such as polyurethane, which will form the foam U, is filled into the insertion cylinder 43 from the opening on the lower side of the bearing member 52. After that, the spherical nut 54 is attached to the anchor member 31 and the cover material 53 is attached to the bearing member 52, forming the hollow part 55. In this state, foam resin material is filled into the hollow part 55 from the injection hole 53a formed at the top of the cover material 53.

[0096] The cover material 53 can be covered with a plastic cap made of polyvinyl chloride resin or the like, and after installation, the position of the anchor material 31 inside can be confirmed from the outside by the position of the cover material 53.

[0097] With this configuration, the protective section 3, which has hardened on the slope S, is fixed to the slope S by multiple fixing parts 4. Furthermore, once the filler material 2 within the protective section 3 hardens, the protective section 3 is fixed to the slope S by multiple anchor materials 31, and the spacers 23 of the reinforcing bars 22 ensure a gap between the reinforcing bars 22 and the surface fabric 12 and back fabric 13 of the fabric formwork 11, thereby maintaining an appropriate cover thickness and increasing the fluidity of the filler material 2. In addition, the reinforcing bars 22 are embedded within the filler material 2 along the slope S and function as reinforcing bars, so that the constructed slope protection structure 1 can form a slope protection structure with high protective performance in all directions.

[0098] As described above, the slope protection structure 1 and slope protection method according to this embodiment allow for high protective strength to be obtained and construction time to be reduced by integrating the reinforcing part 21 and the filling material 2 inside the fabric formwork 11.

[0099] It should be noted that the present invention is not limited to the embodiments described above, and can be implemented in various forms as long as they fall within the technical scope of the present invention.

[0100] In the embodiment described above, the vertical reinforcement members 21A and horizontal reinforcement members 21B constituting the reinforcing section 21 are arranged along the vertical and horizontal directions with respect to the slope S, respectively. However, the vertical reinforcement members 21A and horizontal reinforcement members 21B only need to be arranged in directions that intersect each other. Therefore, the protective section 3 may have a configuration in which the vertical reinforcement members 21A and horizontal reinforcement members 21B and the first housing section 15A and second housing section 15B that house them are arranged in a diagonal grid pattern. [Explanation of Symbols]

[0101] 1. Slope protection structure 2 Filling material 3 Protective part 4 Fixed part 11. Fabric formwork 11a Binding thread 12 Surface cloth 12A Surface section 13. Backing fabric 13A Back part 14 Frame space 15. Storage Area 15A First containment area 15B Second containment area 15C Cross-situation area 16 Front opening 17 Rear opening 18 front sleeves 19 Back sleeve 20 General section 21 Reinforcement section 21A Vertical reinforcement member 21B Horizontal reinforcement member 21C Intersection of reinforced concrete members 22 Reinforcement bars 23 Spacers 23a Framing material 23b Holding part 24 Connecting member 25 Ring section 25A hole 26 Support shaft part 27 Connecting Members 31 Anchor material 40 Fixing member 41 Retaining member 42 Fixed stand 43 Insertion tube 44 Interior space 45 Steel pipe 51 Fastening member 52 Bearing material 52A Cylindrical main body 52B Flange section 53 Lid material 53a injection hole 54 Spherical Nut 54A Seat 55 Hollow part S slope F plane U-shaped projectile

Claims

1. A protective section laid on the slope to protect the slope, A fixing part that restricts the movement of the protective part relative to the slope, A slope protection structure comprising, The aforementioned protective part is A bag-shaped fabric formwork having a front surface and a back surface, A reinforcing portion having a plurality of first reinforcing members extending along a first direction, and a plurality of second reinforcing members extending along a second direction and intersecting the first reinforcing members, and housed within the fabric formwork, The system comprises a filling material that is filled into the fabric formwork to embed the reinforcing portion, The aforementioned fixing part is An anchor member provided so as to protrude a portion from the slope and supporting the intersection of the first reinforcement member and the second reinforcement member, The system includes a cylindrical holding member that penetrates the anchor material and supports the intersection, The first reinforcement member and the second reinforcement member each have an annular portion with a hole formed therein that penetrates the holding member. The first reinforcement member and the second reinforcement member each have an annular portion and are arranged so as to overlap the annular portions in the direction through which the holding member penetrates, The annular portions of the first and second reinforcing members each have a curved shape relative to a plane perpendicular to the through-direction, such that they overlap in a state of interlocking, concave and concave engagement. A slope protection structure characterized by the following features.

2. A protective section laid on the slope to protect the slope, A fixing part that restricts the movement of the protective part relative to the slope, A slope protection structure comprising, The aforementioned protective part is A bag-shaped fabric formwork having a front surface and a back surface, A reinforcing portion having a plurality of first reinforcing members extending along a first direction, and a plurality of second reinforcing members extending along a second direction and intersecting the first reinforcing members, and housed within the fabric formwork, The system comprises a filling material that is filled into the fabric formwork to embed the reinforcing portion, The aforementioned fixing part is An anchor member provided so as to protrude a portion from the slope and supporting the intersection of the first reinforcement member and the second reinforcement member, The system includes a cylindrical holding member that penetrates the anchor material and supports the intersection, The aforementioned fabric formwork has a frame space formed between the surface portion and the back portion, A housing has a first housing portion that extends along the first direction and accommodates each of the first reinforcement members, and a second housing portion that extends along the second direction and accommodates each of the second reinforcement members, and the housing portion is formed in a grid shape by a plurality of the first housing portions and a plurality of the second housing portions, The portion enclosed by the first and second housing sections is a general section that is partitioned in a grid-like pattern. A slope protection structure characterized by the following features.

3. The first reinforcement member and the second reinforcement member each have a connecting member forming the annular portion and a reinforcing bar connecting adjacent connecting members. The slope protection structure according to feature 1.

4. The first reinforcement member and the second reinforcement member have spacers to form a gap between the surface and the back surface of the reinforcing bar. The slope protection structure according to feature 3.

5. A slope protection method for providing the slope protection structure described in Claim 1 or Claim 2, The process involves driving anchor materials into the slope at predetermined positions, The process of laying the aforementioned fabric formwork on the slope while it is secured to the anchor material, The steps include: arranging the first reinforcement member and the second reinforcement member within the fabric formwork and fixing the intersection to the anchor material; The process includes pouring a filler material into the aforementioned fabric formwork. A slope protection method characterized by the following features.

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