JP6661091B1 - Assembling reaction body, slope stabilization structure, and slope stabilization method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an assembly-type reaction force body, a slope stabilizing structure, and a slope stabilizing method which are lightweight and easy to carry, and in which installation and positioning of a bearing plate are extremely easy. SOLUTION: The slope stabilization method includes a step S3 of inserting the reinforcing material into the ground in a state where a part of the rod-shaped reinforcing material remains above the ground, and a fixing member is installed in a part of the reinforcing material. The method includes a fixing step S4 of forming a reinforcing material assembly and fixing the reinforcing material assembly to the ground, and a step S5 of installing a pressure support plate on the reinforcing material assembly to form an assembled reaction force body. The fixing step S4 includes a step S4d of installing a connection socket on the reinforcing material assembly. In the pressure bearing plate installation step S5, a hollow hole having a shape corresponding to the connection socket is installed in the pressure bearing plate, and the connection socket is inserted into the hollow hole, whereby the pressure bearing plate is installed and positioned on the reinforcing material assembly. The feature is that they are performed at the same time. [Selection diagram] FIG.

Description

  The present invention relates to an assembling reaction force body and a slope stabilizing structure for pressing a plurality of cords arranged along a slope of the ground from top to bottom (ground) in order to stabilize the ground. It relates to the body and slope stabilization method.

  Conventionally, rock bolts and support plates for supporting these grounds are sometimes installed on natural slopes or cut slopes where collapse is a concern. Patent Literatures 1 and 2 are known as slope stabilization methods using such lock bolts and support plates.

  The support plates disclosed in Patent Documents 1 and 2 are very heavy because they are rigid flat metal bodies that can press the ground having a certain area. Therefore, it is difficult for the worker to independently carry the support plate along the slope.

  Further, the construction methods disclosed in Patent Documents 1 and 2 include a step of finally positioning and fixing a slope stabilizing structure including a lock bolt and a pressure plate to the ground. In other words, it has been necessary to place the support plate once on the ground where the installation is to be performed, lift it up again, and then tighten the heavy support plate while adjusting the positional relationship with other reinforcing members such as lock bolts.

In addition, the construction methods disclosed in Patent Documents 1 and 2 disperse a large number of support plates on a slope to be stabilized, and connect them with a cord-like body such as a rope to stabilize the ground over a wider area. I am aiming.
More specifically, a support plate is placed at each position corresponding to the apex of the triangle, and the three support plates are connected to each other by hanging a rope at the center.

  Therefore, the manner in which the rope is hung is limited as described above, and when a pair of supporting plates at a triangular position and a pair of supporting plates at another adjacent triangular position are hung with a rope, it is not easy. If you don't do it well, you will end up hanging the rope twice on one side of the same triangle. In other words, for workers, rope hanging was a complicated, very tedious and time-consuming task.

  In addition, both ends of the rope need to be fixed to the ground at a different position from the support plate using a terminal member (not shown) different from the support plate. As a result, the number of parts required on site increases, and the number of parts and time carried by the worker also increase.

  In addition, the support plate is tied with a rope, so that the force of the support plate pressing against the ground can be further enhanced.How to tie the rope to the support plate and how to tie it There was still room for improvement.

JP 2014-118732 A JP 2000-282474 A

  The present invention has been made in view of such circumstances, and is a light-weight, easy-to-carry assembly type reaction force body, a slope stabilization structure, and a slope stabilization method, in which installation and positioning of a pressure plate are extremely easy. The purpose is to provide.

  Another object of the present invention is to provide an assembling reaction force member that facilitates hanging a rope on each support plate and further strengthens the force of each support plate pressing against the ground by tightening a rope to each support plate. , A slope stabilization structure, and a slope stabilization method.

  The present inventors have conducted intensive studies and divided the slope stabilization method of the present invention into a work of fixing a portion including a reinforcing material (a reinforcing material assembly) to the ground and a work of installing a support plate portion. It was conceived that the fixing work of the reinforcing material was completed using the minimum necessary members prior to the installation of the support plate. As a result, as will be described later, the burden on the worker's body is small, and an efficient support plate installation operation can be realized in a short time.

That is, the present invention has, for example, the following configurations and features.
(Aspect 1)
A step of inserting the reinforcing material into the ground while a part of the rod-shaped reinforcing material remains above the ground,
Fixing a fixing member to the part of the reinforcing material to form a reinforcing material assembly, and fixing the reinforcing material assembly to the ground;
Installing a support plate on the stiffener assembly to form an assembled reaction force body;
And
In the fixing step, a connection socket is installed in the reinforcing member assembly,
In the supporting plate installing step, a hollow hole having a shape corresponding to the connection socket is installed in the supporting plate, and the connection socket is inserted into the hollow hole, whereby the supporting plate is placed on the reinforcing member assembly. Simultaneous installation and positioning of
A slope stabilization method characterized by the following.
(Aspect 2)
Arranging the plurality of support plates in a staggered manner on a slope,
Connecting the support plate with the wire rope so that two wire ropes intersect at the support plate to form a rhombus pattern.
The slope stabilization method according to aspect 1, characterized in that:
(Aspect 3)
The method further includes a step of fixing an end and an intermediate portion of the wire rope with the support plate.
The slope stabilization method according to aspect 2, characterized in that:
(Aspect 4)
The method further includes a step of additionally tensioning the intermediate portion of the wire rope with the support plate.
The slope stabilization method according to aspect 3, which is characterized in that:
(Aspect 5)
A prefabricated reaction force body used in the slope stabilization method according to any one of aspects 1 to 4,
The support plate is provided with a reinforcing rib and a base, and
The reinforcing ribs and the base are provided with holes for weight reduction,
An assembling reaction force body characterized in that:
(Aspect 6)
Wherein the reinforcing rib includes a hole for respectively fixing the terminal and intermediate portions of the wire over the rope connecting the adjacent bearing capacity plate, a rope fixing device corresponding to each hole is further provided,
The assembled reaction force member according to aspect 5, characterized in that:
(Aspect 7)
The reinforcing rib is further provided with a tensioning device capable of additionally tensioning the intermediate portion of the wire rope.
The assembled reaction force member according to aspect 6, characterized in that:
(Aspect 8)
Slope stabilization in which the assembled reaction members according to the sixth or seventh embodiment are arranged in a staggered manner on a slope, and the assembly surfaces are connected and fixed by the wire rope to stabilize the slope. Structure.

  The method of the present invention having the above-described features is divided into a fixing member fixing step and a support plate setting step, and the reinforcing member assembly fixing step is completed prior to the supporting plate setting step. Then, since the supporting plate installation process is performed through the connection socket provided in the reinforcing member assembly, the installation and positioning of the supporting plate are performed at the same time, which is an extremely easy operation.

  In addition, the supporting plate of the present invention has a base and reinforcing ribs, and since these constituent members are provided with a large number of holes for the purpose of weight reduction and rope insertion / fixation, compared with the conventional supporting plate. Lightweight and easy to carry. Further, since the hollow hole formed in the support plate of the present invention may be formed in a shape corresponding to the connection socket, it is not necessary to increase the diameter and the like more than necessary compared to the conventional product.

  Further, in the slope stabilization method of the present invention, it is not necessary to fix the terminal or the intermediate portion of the wire rope to the ground or the like at a place other than the place where the supporting plate is installed, and it is not necessary to provide an additional device for fixing. In other words, the assembled reaction force body of the present invention not only fulfills its original function as a pressure receiving plate of the reinforcing material, but also has a rope hook (crossing of the rope with the supporting plate as a base point), and a fixing of the terminal or the intermediate portion of the rope. Various functions such as additional tension of the rope can all be performed in the area of the reaction body.

  Further, according to the construction method of the present invention, it is possible to easily hang a rope on each support plate, and to further increase the force of each support plate pressing the ground by binding the rope to each support plate.

It is the flowchart which showed each process of the conventional slope stabilization method. It is an outline (illustration) of a conventional supporting plate installation method. It is the flowchart which showed each process of the slope stabilization method of this invention. 1 is a schematic view (illustration) of a supporting plate installation method of the present invention. (A) shows an exploded perspective view of a stiffener assembly, (b) shows a perspective view and a sectional perspective view of a spherical washer, (c) shows a perspective view and a sectional perspective view of a connecting socket, and (d) shows a perspective view. The perspective view of a rust prevention cap is shown. (A) and (b) are exploded perspective views of the assembled reaction force body, and (c) is a perspective view of the assembled reaction force body in an assembled state. It is a figure showing an example and a modification of a reinforcement rib. (A) And (b) is a perspective view and an exploded perspective view of a terminal fixing bracket, and (c) is a figure explaining a method of fixing a rope end to a support plate using a terminal fixing bracket. (A) is a figure explaining the method of fixing the middle part of a rope to a reinforcement rib using a middle part fixing bracket, and (b) is a middle part fixing bracket (modification example) corresponding to a reinforcement rib (modification example). It is a figure explaining the method of fixing with, and (c) is an exploded perspective view of an intermediate part fixing bracket (modification). It is the figure which showed the rope connection layout (connection state between assembly type reaction force bodies). It is the figure which showed the exploded perspective view and the perspective view of the rope tension fitting. It is a figure explaining the method of carrying out additional tension of the rope on a support plate using a rope tension fitting.

  Hereinafter, the present invention will be described based on the following specific embodiments with reference to the accompanying drawings, but the present invention is not limited to these embodiments. For example, in the embodiments described below, a connection structure in which a component (for example, a connection socket described below) is “screwed” to another component (for example, a reinforcing member assembly) is illustrated, but the present invention is not necessarily limited thereto. Known connection structures such as “coupling”, “engagement”, “adhesion”, “welding”, and “connection (which may be any of physical, chemical, and magnetic connections)” may be used. In addition, the term "slope" used in the present invention such as "slope stabilizing structure" includes not only natural slopes but also artificial slopes such as cut slopes and slopes, and is slopes including partially flat surfaces. You may.

(Conventional method for installing a prefabricated reaction body)
FIG. 1 is a flowchart showing each step of a conventional slope stabilization method for installing an assembling reaction force body including a support plate on the ground. FIG. 2 shows an outline (illustration) of a conventional supporting plate installation method.

(Hole drilling, grouting, reinforcing material insertion)
In this conventional method, first, a vertical hole 2 is formed in the ground 1 from the ground surface to the ground using a drill or the like (not shown) (step S101, see also FIGS. 1 and 2). Next, grout 3 is injected so as to fill the space in the vertical hole 2 (step S102). The grout is a fluid liquid injected to fill cavities, voids, gaps, and the like in construction work and ground reinforcement work. For the grout 3, a cement (mortar) type, a glass type, a synthetic resin, or the like is used. Thereafter, a reinforcing material (steel material such as a lock bolt) 4 is inserted into the vertical hole 2 so as to pass through the central axis of the vertical hole 2 (step S103).

(Temporary placement and position adjustment of the support plate)
The support plate 110 is prepared, and is temporarily placed on the ground surface while the reinforcing member 4 is inserted through the central hole in the hollow cylinder 111 provided at the center (step S104). Then, the position of the support plate 110 is adjusted such that the central axis of the central hole coincides with the axis of the reinforcing member 4 (step S105).

(Installing washers and spherical washers, screwing nuts and rust prevention caps)
One end of the reinforcing member 4 protrudes above the hollow cylinder 111 of the support plate 110. A washer 112 and a spherical washer 113 are installed above the hollow cylinder 111 so as to cover the central hole (Step S106a and Step S106b).

  At this time, each hole of the washer 112 and the spherical washer 113 is inserted into one end (upper end) of the reinforcing member 4. One end of the reinforcing member 4 is further screwed with a nut 114 and a rust prevention cap 115 (step S106c and step S106d). That is, the support plate 110 and the reinforcing member 4 are integrated by these members 112 to 115 (step S106). The above steps S101 to S106 are repeated, and the plurality of supporting plates 110 are arranged in a staggered manner on the slope to be stabilized (step S107).

  A wire rope (not shown, hereinafter, also simply referred to as “rope”) is hung on each support plate 110 to connect the adjacent support plates 110 (step S108). At this time, ropes are hung on each support plate 110 so that the three surrounding support plates 110 form the vertices of a triangle. The wire rope between the support plates 110 is generally connected to a tension device (not shown) such as a turnbuckle installed at an intermediate position between the support plates 110, and tightens the tension device. Thus, the rope can be tensioned (step S109).

(Problems of the conventional method)
In the conventional method, at the time of step S105, as shown in FIG. 2, the worker has to adjust the center position and direction while lifting the heavy supporting plate 110 from the ground surface. Further, the worker needs to prevent the displacement and rotation of the support plate 110 with respect to the reinforcing member 4 during the period from the temporary placement of the support plate 110 on the slope (step S104) to the permanent fixing by screwing the nut (step S106). There is.

(Normal support plate and center hole)
Generally, the support plate 110 has various shapes. Roughly classified, it is divided into a circle, a square, and a triangle. Basically, a hole (for example, a central hole in the hollow cylinder 111) is provided at the center thereof for inserting the reinforcing material 4 (for example, a steel material such as a lock bolt).

(Diameter of center hole)
In most cases, the size of the reinforcing member 4 is φ19 mm to φ25 mm, and in order to easily store the reinforcing member 4 in the center of the support plate 110, if the size of the hole is flat, φ45 mm is usually used. It is. In addition, as the hole diameter becomes closer to the diameter of the reinforcing member 4, the reinforcing member 4 fits in the center of the support plate 110. However, since the natural slope is not flat and the reinforcing member 4 is erected in an inclined manner, if the hole has a diameter of less than φ45 mm, the reinforcing member 4 interferes with the inner wall of the hole and the support plate 110 cannot be installed. Occurs. Therefore, φ45 mm or more is the mainstream.

(Weight of support plate)
The flat supporting plate 110 has a larger size and thickness in proportion to the load received by the supporting plate 110, and has a greater weight in proportion to the load. As a countermeasure, as shown in FIG. 2, the supporting plate 110 having a shape in which the flat steel is provided with a rib 120 for keeping the strength flat by thinning the flat steel is used to integrate the rib 120 with the flat steel base 130. A hollow cylinder 111 is required at the center. If the diameter of the hollow cylinder 111 is kept at the above-mentioned diameter of 45 mm, the slanting reinforcing material 4 easily contacts and interferes with the inner wall of the hollow cylinder 111. In order to avoid this, it is more desirable to double the cylinder diameter, but the weight of the support plate 110 also increases extremely.

(Summary of problems of the conventional method using a normal support plate)
As described above, according to the conventional method, even after the heavy supporting plate 110 is transported to the site, it is temporarily placed (step S104) and fully fixed (step S106). It is necessary to adjust the position of the support plate 110 including the deviation (step S105). As described above, since a sufficient gap is formed between the reinforcing member 4 and the central hole through which the reinforcing member 4 is inserted, it is necessary to perform a position adjustment operation of shifting the supporting plate 110 to the side at the site. It's a very laborious job for the staff.

  The present inventors have found that in the conventional method, most of the components of the assembly type reaction force body, including the reinforcing member 4 and the supporting plate 110, are permanently fixed only after these components are mounted in a later process. We noticed that there was a problem with this fixed system. After that, the present inventors conceived of a novel construction method using another fixing method described later instead of this fixing method.

(Slope stabilization method of the present invention)
The slope stabilization method of the present invention capable of solving the above-mentioned problems of the conventional method will be described in detail below. In this method, the fixing of the portion containing the reinforcing material 4 (the reinforcing material assembly 40) to the ground and the installation of the supporting plate portion are divided into two, and the fixing process of the reinforcing material 4 using the minimum necessary members ( The point is that a step S4 to be described later is completed prior to the installation of the support plate 10 (step S5 to be described later). As a result, as described later, it is possible to realize an operation in which the burden on the worker's body is small in a short time.

  FIG. 3 is a flowchart showing each step of the slope stabilization method of the present invention. FIG. 4 shows an outline (illustration) of the supporting plate installation method of the present invention. FIG. 5A is an exploded perspective view of the reinforcing member assembly 40, and FIGS. 6A and 6B are exploded views of the assembled reaction force body 6 including the reinforcing member assembly 40 and the support plate 10. FIG. FIG. 6C is a perspective view of the assembled reaction force body 6 in a state where components other than the rope are assembled.

  In the method of the present invention, some steps in the first part are the same as the conventional method. That is, as shown in FIG. 3, a vertical hole 2 is formed from the surface of the ground 1 to the ground (step S1), grout 3 is injected so as to fill the space in the vertical hole 2 (step S2), and the vertical hole 2 is formed. The reinforcing member 4 (for example, a steel material such as a lock bolt) is inserted into the vertical hole 2 so as to pass through the central axis of the step (step S3).

(Fixing of reinforcing material to ground (Step S4))
Next, the fixing plate 41 is passed through the reinforcing member 4 and installed on the ground so as to cover the opening of the vertical hole 2 (step S4a). A spherical washer 42 is passed through the reinforcing member 4 on the fixing plate 41 and screwed with a nut 43 (step S4b and step S4c). In the present invention, the above-described members of the fixing plate 41, the spherical washer 42, and the nut 43 are also referred to as a fixing member for the reinforcing member 4, and a state where the members are assembled to the reinforcing member 4 is also referred to as a reinforcing member assembly 40. That is, only the assembly portion of the reinforcing member 4 (that is, the reinforcing member assembly 40) is fixed to the ground 1 in advance. As a result, it is possible to first execute a confirmation test for fixing or tilting of only this portion.

(Connection socket installation)
Then, the hollow cylindrical connection socket 44 is installed on the upper end of the reinforcing member 4 (step S4d). Here, a left side portion of FIG. 5B is a perspective view of the spherical washer 42, and a right side portion of FIG. 5B is a perspective view (that is, a cross-sectional state) of one half portion 42H when the spherical washer 42 is broken. . Similarly, a left side portion of FIG. 5C shows a perspective view of the connection socket 44, and a right side portion of FIG. 5C shows a perspective view (that is, a sectional state) of one half 44H when the connection socket 44 is broken. . As shown in FIGS. 5B and 5C, corresponding thread shapes 42 a and 44 a are formed on the outer peripheral surface of the spherical washer 42 and the lower portion of the inner peripheral surface of the connection socket 44. Is fixed to the reinforcing member assembly 40 in a state of being erected on the fixing plate 41 and is integrated therewith.

(Installation of support plate (Step S5))
Thereafter, as shown in FIGS. 6A and 6B, the support plate 10 having the hollow cylinder 11 is set on the reinforcing member assembly 40 (step S5). The hollow cylinder 11 is provided with a center hole 12 having an inner diameter (slightly larger) corresponding to the outer diameter of the connection socket 44. Thus, the connection socket 44 of the reinforcing member assembly 40 fixed to the ground 1 can be inserted into the central hole 12, and the supporting plate 10 can be reliably set on the reinforcing member assembly 40.

(Advantages of the present invention when installing a support plate)
As described above, since the connection socket 44 screwed to the spherical washer 42 provided on the reinforcing member 4 is used as a guide member for installing the supporting plate 10 on the ground, the reinforcing member is provided at the center of the supporting plate 10. 4 (stiffener assembly 40) automatically and securely fits. Therefore, the worker does not need to adjust the support plate 10 (for example, to adjust the installation position, the inclination, the degree of rotation, and the like) at all. In other words, the support plate installation step S5 of the present invention is characterized in that the support plate 10 is installed and positioned on the reinforcing member assembly 40 simultaneously.

(Lightweight bearing plate)
The reinforcing ribs 20 and the base 30 formed on the support plate 10 of the present invention are provided with a large number of holes 21 and 31 for reducing the weight as shown in FIG. FIG. 7A shows the reinforcing rib 20 of the first embodiment, and FIGS. 7B and 7C show the reinforcing ribs 20A and 20B according to the modification.

(Lightweight base)
The base 30 has a flat plate shape in which a through hole having a size corresponding to the center hole 12 of the hollow cylinder 11 is formed at the center, and the reinforcing ribs 20 and the hollow cylinder 11 are provided on the upper surface of the base 30 (for example, , Welding). In order to further reduce the weight of the support plate 10, the outer peripheral portion of the base 30 is formed with a hole 31 for reducing the weight in the flat plate region 32 between the reinforcing ribs 20 (that is, the portion where the reinforcing rib 20 is not installed). It is preferable to form a cut-off portion 33 whose outer peripheral edge is removed or curved toward the center. In addition, it is preferable that a rotation preventing hole 34 is provided at an outer edge portion of the flat plate region 32 near the cutout portion 33. By piercing the ground 1 while inserting an elongated metal bar (not shown) into the rotation prevention hole 34, for example, the rotation of the support plate 10 including the base 30 is suppressed. .

(Lightweight reinforcement rib)
In addition, a large number of holes 22, 23, 24 for inserting and attaching the wire rope 5 are formed in the reinforcing rib 20, as described later. Therefore, the supporting plate 10 of the present invention is extremely light in weight as compared with the conventional product, and is easy to transport and handle for the worker.

(Installation of multiple support plates on a slope)
The above steps S1 to S5 are repeated, and the plurality of supporting plates 10 are arranged in a staggered manner on the slope to be stabilized (step S6).

(Rope hanging and fixing / tensioning of rope)
The ropes 5 are hung on a plurality of adjacent support plates 10, and the support plates 10 are connected by a rope (step S7). Thereafter, the ropes are fixed while the ropes 5 are tightened by the support plates 10 (step S8a). Note that these steps S7 and S8a will be described later in detail.

  When the above-described step S8a is completed, each bearing plate 10 is securely fixed to the slope, and a bearing effect for stabilizing the slope is provided. After this, it is preferable to take measures against rust on each support plate 10 (step S9). Specifically, rust prevention oil (for example, grease) (not shown) is filled in the central hole 12 in the support plate 10. As shown in FIG. 6B and FIG. 6C, a cap base 13 is installed to cover the upper end of the central hole 12 which is likely to overflow with the rust-preventive oil (step S9a). 14, and screwed into the connection socket 44 (specifically, the screw groove 44b at the upper end) (step S9b). The outer peripheral edge of the cap base 13 is seated at an engagement end 27 (see, for example, FIG. 7A) cut out in the reinforcing rib 20 so as to receive the cap base.

  Further, a screw hole 14a may be further provided in the head of the rust prevention cap 14, and a cap screw 15 may be further screwed into the screw hole 14a. Thus, when the rust prevention cap 14 is screwed into the connection socket 44 and tightened, the rust prevention oil filled in the center hole 12 more than necessary (the rust prevention oil 14 is separated by the rust prevention cap 14 and the center hole 12). Rust prevention oil having a volume larger than the space can be discharged to the outside of the rust prevention cap 14 through the screw holes 14a. Thereby, the head of the reinforcing member 4 is sealed by the central hole 12 and the rust prevention cap 14 completely filled with the rust prevention oil, and the rust prevention performance is further enhanced. In addition, a perspective view showing the rust prevention cap 14 and the cap screw 15 from the outside is shown on the left side of FIG. 5D, and a perspective view showing the rust prevention cap 14 from the inside is shown on the right side of FIG. The screw groove 14b provided inside the rust prevention cap 14 is screwed into the screw groove 44b at the upper end of the connection socket 44.

  In the slope stabilizing structure of the present invention, the load acting on the reinforcing member 4 is the spherical washer 42, the connecting socket 44 and the hollow cylinder 11, the rust prevention cap 14, the cap base 13, the reinforcing rib 20, the support plate base 30 In order of stabilization of the slope. Further, since the head of the reinforcing member 4 does not protrude to the outside of the support plate 10, the possibility of direct hits such as falling rocks is reduced, and the reinforcing member 4 itself is less likely to be broken or damaged.

(Structure of reinforcing rib)
Next, referring to the drawings, a description will be given of a structure of the assembling reaction force member 6 that can realize the above-described method. As shown in FIG. 6C, the supporting plate 10 is provided with a total of six thin plate-like reinforcing ribs 20. Specifically, the reinforcing rib 20 is disposed on the base 30 such that one end (base end) abuts the hollow cylinder 11 and the other end (tip) extends radially (radially outward) from the hollow cylinder 11 as a base point. Have been.

  Each reinforcement rib 20 is provided with a plurality of holes 22, 23, and 24 for inserting or fixing the rope 5 (see FIG. 7A). More specifically, a first hole 22 for fixing a terminal 51 of the rope 5, a second hole 23 for fixing an intermediate portion 53 of the rope 5, a plurality of ribs 20 are provided on the base end side, and A third hole 24 for inserting the rope 5 around the hollow cylinder 11 is provided in the reinforcing rib 20. The reinforcing ribs 20 are also provided with lightening holes 21 for reducing the weight of the reinforcing ribs 20 and thus the assembled reaction force body 6 including these.

(Various rope fixing functions with support plate)
As described above, the support plate 10 of the present invention not only functions as a pressure receiving plate for the reinforcing member 4 but also includes the reinforcing rib 20 having the above-described structure. Provides various fastening and tying functions.

(Fix the rope terminal using the first hole)
The terminal 51 of the rope 5 can be fixed to the first hole 22 of the reinforcing rib 20 by using, for example, a terminal fixing bracket 60 as shown in FIG. As shown in FIG. 8B, the terminal fixing bracket 60 includes two bolts 61, two washers 62, two fixing plates 63 having holes 63a through which the bolts 61 are inserted, and a hollow cylinder. It can be constituted by two spacers 64 forming a shape, a disc spring washer 65, and a nut 66.

(Attachment procedure of terminal fixing bracket to supporting plate)
Next, a procedure for attaching the terminal fixing bracket 60 to the reinforcing rib 20 of the support plate 10 will be described with reference to FIG. First, the bolt 61 is inserted into the washer 62, the one fixing plate 63, and the spacer 64 (64a) in this order to be integrated. Then, the one integrated spacer 64 a is inserted into the first hole 22 on the tip (outer edge) side of the reinforcing rib 20. Then, in this state, the distal end side of the spacer 64a is inserted through the other fixing plate 63 and the disc spring washer 65 in this order, and finally the nut 66 is screwed. The terminal fixing bracket 60 can be attached to the reinforcing rib 20 by such a procedure.

(Attachment procedure of rope terminal using terminal fixing bracket)
The spacer 64b other than the spacer 64a inserted into the first hole 22 of the terminal fixing bracket 60 attached to the reinforcing rib 20 has a shape protruding from the support plate 10 in the outer peripheral direction. Therefore, as shown in FIG. 8C, if the rope terminal 51 having the winding grip 52 is used, a part of the terminal fixing bracket 60 is once disassembled, and the spacer 64 b is attached to the ring portion of the winding grip 52. After the insertion, the disassembled parts are attached again to connect the rope terminal 51 and the terminal fixing bracket 60 attached to the reinforcing rib 20, and thus the rope 5 and the supporting plate 10 are connected via the terminal fixing bracket 60. Can be connected.

(Efficient installation of rope terminals in a short time)
When transporting / installing the support plate 10 to the site (the ground 1), it is preferable that the fixed terminal fitting 60 is attached to the reinforcing rib 20 of the support plate 10 in advance. Accordingly, at the site, it is only necessary to perform the mounting work of the above-described rope terminal 51 (the ring portion of the winding grip 52), so that the mounting work is efficient in a short time.

(Fixing of the middle part of the rope using the second hole)
In the method of the present invention, the intermediate portion 53 of the rope 5 can be fixed using the second hole 23 of the reinforcing rib 20. As shown in FIG. 9A, in the method of the present invention, the rope 5 is temporarily drawn into the outer peripheral portion of the hollow cylinder 11 of the support plate 10 from the direction of arrow T, and the direction is changed (curved) at this outer peripheral portion. T), the rope 5 can be installed on the support plate 10 so as to be pulled out in the direction of arrow D.

  Specifically, one end (end 51) of the rope 5 is moved closer to the outer peripheral portion of the cylinder 11 along the reinforcing rib 20 extending in the direction of the arrow T, and the third reinforcing rib 20 adjacent to the reinforcing rib 20 is moved to the third position. The terminal 51 is inserted through the hole 24, the terminal 51 is pulled out along the reinforcing rib 20 adjacent to the last inserted reinforcing rib 20 and extending in the direction of arrow D, and the rope 5 is tensioned with a predetermined tension. It is installed on the reinforcing rib 20.

(Installation procedure of the middle part of the rope using the middle part fixing bracket)
After the rope 5 is hung on the reinforcing rib 20, the intermediate portion 53 of the rope 5 is attached to the reinforcing rib 20 by using an intermediate fixing member 70 (see FIG. 9A) composed of members 71 to 74 described later. Can be fixed.

  Specifically, as shown in FIG. 9A, a U-bolt 71 and a pedestal 72 having a hole through which the tip of the U-bolt 71 can be inserted are prepared. Each end of the U-bolt 71 is inserted into the second hole 23 of the reinforcing rib 20 while sandwiching the intermediate portion 53 of the rope 5 with. Then, the tip of the U-bolt 71 is inserted into a disc spring washer 73 arranged on the side opposite to the side where the intermediate portion 53 of the rope 5 exists, and a nut 74 is screwed to the tip. In the case of the embodiment shown in FIG. 9A, the fixing portions of the intermediate portion 53 of the rope 5 in each supporting plate 10 are four places for one rope (two places for one reinforcing rib 20). However, the present invention is not necessarily limited to this, and may be two or six places.

(Rope arrangement pattern 1 (diamond))
By using the above-described fixing method for the intermediate portion 53 of the rope 5, the supporting plates 10 adjacent to each other can be connected and fixed by the rope 5 with the rope arrangement shown in each of FIGS. Become. In the embodiment shown in FIG. 10A, the support plates 10 (assembled reaction force members 6 including the support plates 10) are arranged in a staggered manner, and two ropes 5 intersect one support plate 10. The support ribs 10 can be fixed to the reinforcing ribs 20 of the support plates 10 with the intermediate fixing metal fittings 70. That is, the intersection of the ropes 5 results in a rope arrangement in which a rhombic pattern (a pattern in which the support plate 10 is disposed at each vertex of the rhombus and the rope 5 is disposed on each side) is continuous.

(Rope arrangement pattern 2 (triangle))
Further, as in the embodiment shown in FIG. 10 (b), the support plates 10 may be arranged in a staggered manner, and three ropes 5 may be hung so as to intersect each support plate 10. In this case, a triangle is used. The pattern is a continuous rope arrangement.

  As a specific rope hanging method of this modified example, first, two ropes 5 (solid lines shown in FIG. 10B) are used in the same manner as in the above-described embodiment, and the rhombic pattern shown in FIG. After the rope array is formed, each supporting plate 10 (assembly type including the supporting plate 10) is passed so that another additional rope 5a (broken line shown in FIG. It is only necessary to hang the additional rope 5a on the force body 6). In this way, even for a beginner worker, the rope hanging work is simple and clear, and can be completed in a short time. Further, in the present modification, the region passing through each half of each rhombus is also tied with the additional rope 5a, so that the ground bearing effect and the stabilization of the slope in the region where the support plate 10 is laid can be further promoted.

(Modified example of rope fixing method (rope fixing in compressed deformation state))
The method of fixing the rope 5 to the support plate 10 and the fixing device are not limited to the above-described embodiment. Next, another suitable modification will be introduced. FIGS. 7B and 7C show reinforcing ribs 20A and 20B according to a plurality of modified examples. The third holes 24A and 24B of the reinforcing ribs 20A and 20B are not limited to the round holes 24 as in the first embodiment, but may be cutouts that open upward. In the case of the modified example having this notch, the operation of passing the terminal 51 of the rope 5 through the third hole 24 which is indispensable in the first embodiment (that is, the insertion operation) is not necessary. It is only necessary to hang the rope 5 (the middle part 53) on the outer peripheral side of the central cylinder 11 from above (that is, the mounting work).

  Since the above-described engagement ends 27 are formed near the openings of the notches (third holes) 24A and 24B, when the cap base 13 and the rust-prevention cap 14 are installed in the hollow cylinder 11, Since these are covered so as to close the opening, the rope 5 is securely restrained even near the outer periphery of the hollow cylinder 11 and does not escape upward.

Further, a second hole 23B for fixing the intermediate portion 53 of the rope 5 is also provided in the reinforcing rib 20B according to the second modification. However, the second hole 23B of the second embodiment is different from the second hole (circular hole) 23 according to the first embodiment, the long hole shape 23B (more preferably, two long holes _23B 1, 23B ₂ are at the center (“+” Shaped hole shape orthogonal to each other).

  Also, as shown in FIG. 9C, an intermediate part fixing bracket 70B according to a modification corresponding to the reinforcing rib 20B includes a U bolt 71B, a pedestal 72B through which the tip of the U bolt 71B can be inserted, and two pedestals 72B. And a nut 74B. In the case of this modification, the intermediate portion 53 of the rope 5 is sandwiched between the U bolt 71B and the reinforcing rib 20B as shown in FIG. 9B. The tips of the U bolts 71B protruding to the opposite side of the reinforcing ribs 20B are passed through holes of the pedestal 72B, and nuts 74B are screwed to the respective tips protruding from these holes.

  By doing so, a part of the rope 5 is compressed (enters) and deforms into a “U-shape” in the elongated hole 23B (see FIG. 9B). Can be more firmly fixed to the reinforcing ribs 20B. Therefore, when a tensile force is applied to the rope 5 due to the fluctuation of the ground 1, a large resistance force is generated by the intermediate fixing metal 70B, so that the slope can be stabilized.

(Modification of rope fixing method (additional tension of rope with rope tension jig))
In the method of the present invention, it is preferable that the rope 5 hung on the support plate 10 be additionally tensioned using the rope tensioning jig 80 shown in FIG.

(Rope tension jig)
The rope tensioning jig 80 has, for example, a jig main body 81 as shown in each of FIGS. The jig main body 81 has two flat disks 82 provided with a center hole 82a, and a bearing 83 forming a hollow cylindrical body that separates the flat disks 82 in parallel.

(Structure inside the jig body)
A protruding plate 82b extending radially outward is formed on each of the right and left sides of the flat disk 82, and a column-shaped rope holding body for connecting the opposing flat disks 82 is provided at the tip of the protruding plate 82b. 84 are provided. Further, inside the outer peripheral edge of one flat disk 82 (the portion where the protruding plate 82b is not provided), the flat disk 82 penetrates along the virtual circumference having a virtual radius shorter than the radius of the flat disk 82. A plurality of positioning holes 82c (in the drawing, three on one radial direction side of one flat disk 82 and three on the other radial side (that is, corresponding positions of line symmetry)) are provided. Outside the flat disk 82, a rotary knob 85 having a cubic shape having a center hole 85a is provided.

  As the jig main body 81 composed of the members 82 to 85, an integrated jig may be used.

  The rope tensioning jig 80 further includes, in addition to the jig main body 81, a rotation shaft bolt 86a and a nut 86b corresponding thereto, a positioning shaft bolt 87a and a nut 87b corresponding thereto.

  Here, the rotation shaft bolt 86a is inserted into the jig main body 81. Specifically, the distal end side of the rotating shaft bolt 86a is inserted through the center hole 85a of the rotary knob 85, the center hole 82a of one flat disk 82, the inside of the bearing 83, and the center hole 82a of the other flat disk 82 in this order. Then, the rotary shaft bolt 86a is inserted into the jig main body 81 until the head 86h comes into contact with the rotary knob 85. Then, a nut 86b is screwed to the tip of the rotation shaft bolt 86a protruding from the jig body 81. Further, the positioning shaft bolt 87a is inserted through a positioning hole 82c provided in one flat disk 82, and a nut 87b is screwed to a tip end side thereof.

(Attaching the rope tension jig to the reinforcing rib)
Next, a method of attaching the rope tension jig 80 having the above configuration to the reinforcing rib 20B will be described. The reinforcing rib 20B provided on the support plate 10 is provided with a fourth hole 25 (see FIGS. 7C and 9B) for additional rope tension. The fourth hole 25 includes a shaft insertion hole 25a and a plurality of (12 in the figure) positioning holes 25b spaced apart along the circumference of a virtual circle centered on the shaft insertion hole 25a. Is provided.

  The tip of the rotation shaft bolt 86a of the rope tensioning jig 80 is inserted into the shaft insertion hole 25a, and the jig main body 81 is applied to one surface of the reinforcing rib 20B. A nut 86b is screwed to the tip of the shaft bolt 86a from the opposite side of the applied surface. Thereby, the rope tensioning jig 80 is rotatably attached to the reinforcing rib 20B (see FIG. 12D).

(Additional rope tension using a rope tension jig)
A method of additionally tensioning the rope 5 hung on the support plate 10 using the rope tensioning jig 80 will be described. FIG. 12A shows a state in which only the rope 5 is attached to the support plate 10 before the rope tension jig 80 is used. As can be seen from FIG. 12A, since the rope 5 floats from the ground (ground 1), the effect of supporting the slope (the effect of the rope 5 pressing the ground via the supporting plate 10) is more than expected. There are concerns that cannot be expected. When an extremely long rope 5 is used, there is a possibility that the rope is not sufficiently tensioned in the horizontal direction.

  Therefore, in the present embodiment (modification), as shown in FIG. 12D, the rope 5 is hung around the reinforcing rib 20B on the support plate 10 as described above, and a lever block (not shown) is used. A predetermined tension is applied to the rope 5 using a registered trademark or the like. Then, the intermediate portion 53 of the rope 5 is fixed to the reinforcing rib 20B using the intermediate portion fixing bracket 70B. Then, a part of the rope 5 crossing the fourth hole 25 of the reinforcing rib 20B is pressed downward (to the ground side) by the bearing 83 of the rope tensioning bracket 80 to be deformed, and the rotation shaft bolt 86a of the rope tensioning bracket 80 is changed. Through the fourth hole 25 of the reinforcing rib 20B. As a result, a part of the rope 5 is disposed below the rope pressing body 84 and the bearing 83, so that the rope 5 is gradually bent.

  Thereafter, the rotary knob 85 is rotated using a torque wrench or a pipe wrench (not shown). At this time, the rope holding body 84 on the inner side (the base end side of the reinforcing rib 20B) moves from the horizontal position to a lower position, and the rope holding body 84 on the outer side (the distal end side of the reinforcing rib 20B) moves to a position above the horizontal position. Knob 85 is rotated as described above.

  As a result, the intermediate portion 53 of the rope 5 extending between the intermediate portion fixing bracket 70B and the inner rope holding member 84 is in a state of being further bent downward. In other words, since the tension in the rope 5 is increased by the amount of bending of the rope 5 and the gap between the bent portion of the rope 5 and the ground 1 is substantially eliminated, the rope 5 can be sufficiently extended in the ground direction. A large bearing effect will be exhibited. From another viewpoint, it can be said that the rope tensioning member 80 is a device for further reinforcing the fastening force between the rope 5 and the supporting plate 10 by the intermediate portion fixing member 70B.

  The method of the present invention having the above-described features is divided into a fixing member fixing step and a support plate setting step, and the reinforcing member assembly fixing step is completed prior to the supporting plate setting step. Then, since the supporting plate installation process is performed through the connection socket provided in the reinforcing member assembly, the installation and positioning of the supporting plate are performed at the same time, which is an extremely easy operation.

  In addition, the supporting plate of the present invention has a base and reinforcing ribs, and since these constituent members are provided with a large number of holes for the purpose of weight reduction and rope insertion / fixation, compared with the conventional supporting plate. Lightweight and easy to carry. Further, since the hollow hole formed in the support plate of the present invention may be formed in a shape corresponding to the connection socket, it is not necessary to increase the diameter and the like more than necessary compared to the conventional product.

  Further, in the slope stabilization method of the present invention, it is not necessary to fix the terminal or the intermediate portion of the wire rope to the ground or the like at a place other than the place where the supporting plate is installed, and it is not necessary to provide an additional device for fixing. That is, the assembled reaction force body of the present invention not only fulfills the original function of the pressure-receiving plate of the reinforcing material, but also rope hanging (crossing of the rope with the supporting plate as a starting point), fixing of the terminal or intermediate portion of the rope, It can perform various functions such as additional tension on the rope.

  Further, according to the construction method of the present invention, it is possible to easily hang a rope on each support plate, and to further increase the force of each support plate pressing the ground by binding the rope to each support plate.

  Thus, the present invention is particularly suitable for stabilizing slopes and slopes where collapse is a concern, and has extremely high industrial applicability and utility value.

DESCRIPTION OF SYMBOLS 1 Ground 2 Vertical hole 3 Grout 4 Reinforcement material 5 Wire rope 6 Assembled reaction body 10 Support plate 11 Hollow cylinder 12 Central hole 20, 20A, 20B Reinforcement rib 21, 22, 23, 24, 25 Light-weight hole, 1st hole, 2nd hole, 3rd hole, 4th hole 30 Base 40 Reinforcement assembly 44 Connecting socket 60 Terminal fixture 70, 70B Intermediate fixture 80 Rope tension jig S1 Drilling process (process of forming a vertical hole in the ground)
S2 Grout injection step S3 Step of inserting reinforcing member into vertical hole S4 Step of fixing reinforcing member assembly to ground S4d Setting step of connecting socket to reinforcing member assembly S5 Setting step of supporting plate S6 Multiple supporting plates on slope (assembly) S7 Step of connecting the supporting plates with a rope S8 Step of fixing the rope with the supporting plate S9 Rust prevention step

Claims (8)

A step of inserting the reinforcing material into the ground while a part of the rod-shaped reinforcing material remains above the ground,
Fixing a fixing member to the part of the reinforcing material to form a reinforcing material assembly, and fixing the reinforcing material assembly to the ground;
Installing a support plate on the stiffener assembly to form an assembled reaction force body;
And
In the fixing step, a connection socket is installed in the reinforcing member assembly,
In the supporting plate installing step, a hollow hole having a shape corresponding to the connection socket is installed in the supporting plate, and the connection socket is inserted into the hollow hole, whereby the supporting plate is placed on the reinforcing member assembly. Simultaneous installation and positioning of
A slope stabilization method characterized by the following. Arranging the plurality of support plates in a staggered manner on a slope,
Connecting the support plate with the wire rope so that two wire ropes intersect at the support plate to form a rhombus pattern.
The slope stabilization method according to claim 1, wherein: The method further includes a step of fixing an end and an intermediate portion of the wire rope with the support plate.
The slope stabilization method according to claim 2, wherein: The method further includes a step of additionally tensioning the intermediate portion of the wire rope with the support plate.
The slope stabilization method according to claim 3, wherein: An assembly type reaction force body used in the slope stabilization method according to any one of claims 1 to 4,
The support plate is provided with a reinforcing rib and a base, and
The reinforcing ribs and the base are provided with holes for weight reduction,
An assembling reaction force body characterized in that: Wherein the reinforcing rib includes a hole for respectively fixing the terminal and intermediate portions of the wire over the rope connecting the adjacent bearing capacity plate, a rope fixing device corresponding to each hole is further provided,
The assembly type reaction body according to claim 5, characterized in that: The reinforcing rib is further provided with a tensioning device capable of additionally tensioning the intermediate portion of the wire rope.
The assembly-type reaction body according to claim 6, wherein: The assembled reaction elements according to claim 6 or 7 are arranged in a staggered manner on a slope, and the assembly reaction elements are connected and fixed by the wire rope to stabilize the slope. Slope stabilizing structure.

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