JP5188949B2 - Bearing plate, slope stabilization structure and slope stabilization method - Google Patents

Description

  The present invention relates to a bearing plate, a slope stabilization structure, and a slope stabilization method.

  2. Description of the Related Art Conventionally, a bearing plate that is installed on a slope where the soil surface or the like is exposed and supports the ground of the slope so as to suppress the collapse of the slope, and a slope stabilization method using the same are known (for example, Patent Documents). 1).

In Patent Document 1, a plurality of bearing plates installed in a predetermined arrangement on a slope are fixed to the ground surface of the slope with anchor bolts, and a wire rope is stretched between the respective bearing plates in a mesh shape. It is shown that the slope is stabilized by supporting the ground of the slope with a bearing plate and a wire rope.
Japanese Patent No. 3702335

  However, the technique disclosed in Patent Document 1 requires an anchor bolt for fixing the bearing plate to the ground of the slope, which increases the number of members necessary for stabilizing the slope.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a bearing plate, a slope stabilization structure, and a slope stabilization capable of stabilizing the slope while reducing the number of members. It is to provide a chemical method.

  In order to achieve the above-mentioned object, the bearing plate according to the present invention is fixed by embedding one end of a plurality of cord-like bodies in a common fixing point of the ground of the slope, and these cord-like bodies are arranged along the slope. Used for slope stabilization structures wired in different directions, provided at the fixed location to restrain the cable-like bodies to the slope and to support the slope, A lead-out through hole for guiding a portion of the cord-like body extending from the ground surface to the front side of the bearing plate, and each cord-like body led out from the lead-out through-hole to the slope A support portion for supporting at a position separated from the support hole, and a position where the support portion supports the respective cord-like bodies outwardly from the lead-out through-holes. Position closer to the slope than the support position by the part And a restraining portion for restraining the.

  In this bearing plate, each cord-like body extending on the slope from the ground of the slope is guided to the front side of the bearing plate through the lead-out through-hole, and each cord-like body is supported at a position separated from the slope by the support portion. In addition, at a position away from the support position of each cord-like body by the support portion outward of the lead-out through hole, each cord-like body is constrained to a position closer to the slope than the support position by the support portion. be able to. Therefore, if each cord-like body is stretched with a predetermined tension along the slope, the tension of the portion from the portion supported by the support portion to the restraint portion of each cord-like body causes the support portion to be inclined. It has a directional component that presses to the side. As a result, the entire bearing plate is pressed and fixed to the slope side, and each cord-like body is stably restrained near the slope by the restraining portion of the bearing plate. That is, in this configuration, the pressure bearing plate can be pressed to the slope side by using the tension of the cords stretched on the slope without using anchor bolts as in the prior art. It can be constrained in the vicinity, and the slope can be well supported by the bearing plate and the cord-like body. Therefore, in this bearing plate, it is possible to stabilize the slope while reducing the number of members.

  In the bearing plate, a restraint is provided at a position away from the support position of each cord-like body by the support portion outwardly of the lead-out through hole, and guides each cord-like body to the back side of the bearing plate. A through hole for use, and the restraining portion is composed of a portion outside the through hole for restraint with respect to the through hole for lead out, and this portion sandwiches each cord-like body with the inclined surface. Is preferred.

  If comprised in this way, since the part outside a through-hole for restraint among support plates can be used as a restraint part, the number of members is reduced compared with the case where a restraint part of another member is attached to a support plate. However, the cord-like body can be restrained at a position closer to the slope than the support position by the support portion.

  In the bearing plate, it is preferable that the support portion is a cylindrical body that rises from a peripheral edge of the lead-out through hole.

  According to this structure, each cord-like body led out from the lead-out through-hole can be extended in a direction away from the slope through the cylindrical body of the support portion, and each cord-like body is inclined at the end of the cylindrical body. It can support in the position away from. In this configuration, since the support portion is provided over the entire circumference of the lead-through hole, all of the cord-like bodies led out from the lead-through hole are extended in different directions. Can be supported by the support portion. That is, in this structure, since a support part can be integrated compared with the case where a support part is provided for every cord extending in a different direction, compared with the case where a support part is provided for each cord extending in a different direction. With a simple configuration, a plurality of cords extending in different directions can be supported at positions away from the slope.

  In this case, it is preferable that the portion from the inner surface of the cylindrical body constituting the support portion to the end surface in the axial direction is formed as a convex surface that is curved so as to spread to the outer side of the cylindrical body.

  According to this structure, when each cord-like body is passed through the cylindrical body of the supporting portion and is bent and extended to the outside of the cylindrical body through the end surface of the cylindrical body, each cord-like body is connected to the inner surface of the supporting portion. Can be gently bent along the end face. Thereby, the stress concentration in the bent part of each cord-like body can be relieved and damage to the cord-like body resulting from the stress concentration can be suppressed.

  In the bearing plate, it is preferable that the constraining portions are spaced apart from each other in four directions of the lead-out through hole with the lead-out through hole as a center.

  If comprised in this way, four cord-like bodies are extended on the slope from the ground of a slope, and each cord-like body is guided to the front side of the bearing plate through the lead-out through-hole, and supported in the four directions. The cords can be bent and restrained by the restraining portions disposed on the four sides of the lead-out through hole. Thereby, a support plate can be stably pressed to the slope side by four cord-like bodies.

  A slope stabilization structure according to the present invention is a slope stabilization structure provided with the above-mentioned pressure bearing plate and used for stabilizing a slope, and one end of each is embedded in a common fixed portion of the ground of the slope. A plurality of main ropes arranged in different directions along the slope, and a portion of each main rope extending from the ground of the slope to the slope is the support. The pressure plate is guided to the front side of the pressure plate through the lead-out through hole, supported by the support portion of the pressure plate at a position separated from the inclined surface, and further supported by the support portion by the restraining portion of the pressure plate. It is restrained at a position closer to the slope than a support position by the support portion at a position away from the position outward of the lead-out through hole.

  In this slope stabilization structure, the bearing plate is moved to the slope side by using the tension of the main rope extending on the slope without using anchor bolts as in the conventional case, by the same action as the above bearing plate. The main rope-like body can be restrained near the slope, and the slope can be favorably supported by the bearing plate and the main rope-like body. Therefore, in this slope stabilization structure, it is possible to stabilize the slope while reducing the number of members.

  In the slope stabilization structure, a plurality of the fixed portions of the main rope-like body are provided at intervals on the slope, and the support plate is provided at each of the fixed portions, and the predetermined fixed portions are provided. The main cord-like body that is led out through the lead-out through hole of the corresponding bearing plate and supported by the support portion of the bearing plate and further restrained by the restraining portion of the bearing plate is adjacent to The main cord-like body that is led out from the fixed portion through the lead-out through hole of the corresponding bearing plate and supported by the support portion of the bearing plate, and further restrained by the restraining portion of the bearing plate, is in tension with each other. It is preferable to be connected in a connected state.

  If it comprises in this way, since it can install in the state where the main rope-like object which adjoined was strained, while pressing each bearing plate to the slope side using the tension of the main rope-like body, the main rope-like object A specific structure that can be restrained in the vicinity of the slope can be configured.

  In the slope stabilizing structure, the main ropes are arranged so as to form a grid vertically and horizontally on the slope, and positions of the intersections so as to extend in four directions from the intersections of the grids. Embedded in the ground of the slope and fixed, and the support plate is disposed at a position corresponding to each intersection of the lattice, and in each of the support plates, the restraining portion is centered on the lead-out through hole. The constraining portions are arranged to be spaced apart from each other in the four directions of the lead-out through-holes, and the constraining portions constrain the main cord-like bodies extending in the four directions at positions closer to the slope than the support positions by the support portions. It is preferable.

  If comprised in this way, the slope stabilization structure which has the main rope-like body arranged by the grid | lattice form on the slope, and the several bearing plate arrange | positioned at each intersection of the grid | lattice can be comprised. The concrete structure of the slope stabilizing structure capable of stably supporting the slope can be configured.

  In this case, it is preferable to provide a plurality of sub-cord-like bodies that are stretched between those located on the diagonal of the lattice among the support plates.

  If comprised in this way, in addition to the main rope-like body, the slope can be supported also by a secondary rope-like body that is diagonally stretched in the diagonal direction of the lattice, so that the slope can be further stabilized. .

  Furthermore, in this case, it is preferable that each of the sub-cord-like bodies is stretched over the support portion of each of the bearing plates.

  If comprised in this way, since a sub-cord-like body can be stretched using the support part of each bearing plate, it is not necessary to provide separately the member for stretching a sub-cord-like body in a bearing plate. For this reason, it is possible to further stabilize the slope by stretching the sub-cord-like body while preventing the configuration from becoming complicated.

  The slope stabilization method according to the present invention includes a plurality of cord-like bodies and a plurality of bearing plates, each supporting plate passing through the bearing plate in the vertical direction, and a front and back of the bearing plate. A support portion capable of supporting the cord-like body at a position spaced upward from the back surface of the bearing plate with the direction being the vertical direction, and the support portion supporting the cord-like body outward from the lead-out through hole A slope stabilization structure having a restraining portion provided at a distant position and capable of restraining the cord-like body at a position spaced downward from a support position of the cord-like body by the support portion in the vertical direction. A slope stabilization method for stabilizing the slope, and a fixing hole forming step of providing a plurality of fixing holes at a predetermined interval in the ground of the slope, and a predetermined number of cords among the plurality of cords And bundle one end of each bundle of cords A cord fixing step for fixing the respective cords to the slope by embedding them in the fixing holes, and a supporting plate arrangement for arranging the bearing plates at locations corresponding to the fixing holes on the slope. A step extending from the ground surface of the slope to the slope side of the cable body through the lead-out through hole of the corresponding bearing plate and the support of the bearing plate A routing step in which the support portion is supported at a position spaced apart from the slope, and is then restrained by the restraining portion of the support plate at a position closer to the slope than the support position by the support portion and extended to the outside of the support plate. And a step of pulling the cords extending from the adjacent pressure bearing plates with a predetermined tension and coupling the cords to each other in this state.

  In this slope stabilization method, the cords extending from the adjacent bearing plates can be coupled to each other in a state of being pulled with a predetermined tension, and the cords can be stretched with a predetermined tension. Thereby, the tension | tensile_strength of the part from the part supported by the support part of the bearing plate to the restraint part has the direction component which presses a support part to a slope side. For this reason, as in the case of the above-mentioned bearing plate, each bearing plate can be pressed to the slope side by using the tension of each cord-like body stretched on the slope without using anchor bolts as in the prior art. Each cord-like body can be restrained in the vicinity of the slope, and the slope can be favorably supported by each supporting plate and each cord-like body. Therefore, in this slope stabilization method, it is possible to stabilize the slope while reducing the number of members.

  As described above, according to the present invention, it is possible to stabilize the slope while reducing the number of members.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view of a bearing plate 2 according to an embodiment of the present invention, and FIG. 2 is a front view of the bearing plate 2. First, with reference to these drawings, the structure of the bearing plate 2 according to an embodiment of the present invention will be described.

  The bearing plate 2 according to the present embodiment is used for a slope stabilization structure 10 to be described later, and the main rope-like body 12 of the slope stabilization structure 10 is a slope (an inclined ground made by cut or embankment). It is provided at a fixed location fixed to a slope (slope part), and restrains each main rope 12 to the slope and supports the slope. The main cord 12 is included in the concept of the cord of the present invention.

  Specifically, the bearing plate 2 includes a bearing plate main body 4 and a support portion 6 as shown in FIG.

  The bearing plate main body 4 is formed of a substantially rectangular flat plate and is installed so as to cover a fixed portion of a main rope-like body 12 (to be described later) on a slope. The bearing plate main body 4 includes a lead-out through hole 4a (see FIG. 2), a restricting through hole 4b, and a restricting portion 4c.

  The lead-out through hole 4a is for guiding a portion of the main rope-like body 12 described later extending from the ground surface of the slope to the top side of the bearing plate 2 (the bearing plate body 4). The lead-out through-hole 4a is disposed in the center of the pressure-bearing plate main body 4, and is formed as a circular hole that penetrates the pressure-bearing plate main body 4 (the pressure-bearing plate 2) from the front side to the back side in the vertical direction. The diameter of the lead-out through hole 4a is set to a diameter through which four main rope-like bodies 12 described later can be inserted simultaneously.

  A support portion 6 is provided in the bearing plate main body 4 coaxially with the lead-out through hole 4a. The support portion 6 is for supporting the main rope-like body 12 led out from the lead-out through hole 4a at a position separated from the inclined surface in a substantially vertical direction. In other words, the support portion 6 can support the main rope-like body 12 at a position spaced upward from the back surface of the bearing plate 2 with the front and back direction of the bearing plate 2 being the vertical direction. And this support part 6 consists of a substantially cylindrical body which stands | starts up from the periphery of the through-hole 4a for derivation | leading-out, and the peripheral wall gradually radial direction, curving as it goes to both ends from the axial center part of the said support part 6 It spreads outward. That is, the portion from the inner surface of the support portion 6 to both end surfaces in the axial direction is formed as a convex surface that is curved so as to gradually spread outward in the radial direction. The support portion 6 supports the main cord-like body 12 at the end opposite to the bearing plate main body 4. Further, the inner diameter of the support portion 6 is the smallest at the center portion in the axial direction of the support portion 6, and the inner diameter at the center portion is smaller than the diameter of the lead-out through hole 4 a. On the other hand, the inner diameter at both ends in the axial direction of the support portion 6 is slightly larger than the diameter of the lead-out through hole 4a.

  The constraining through hole 4b is for guiding the main rope-like body 12 extending through the lead-out through hole 4a to the front side of the support plate 2 to the back side of the support plate 2 (support plate main body 4). The constraining through hole 4b is provided at a position away from the position where the main rope-like body 12 is supported by the support portion 6 to the outside of the lead-out through hole 4a, and the lead-out through hole 4a is led out. The four through holes 4a are spaced apart from each other. Each constraining through-hole 4 b is formed in a circular shape, and is arranged on each straight line from the center of the bearing plate main body 4 to the four corners of the bearing plate main body 4. The distances between the restricting through holes 4b and the leading through holes 4a are equal to each other. Further, the main rope-like body 12 which will be described later hits the edge of the restraining through-hole 4b in a state where the main rope-like body 12 is guided to the back side of the bearing plate 2 through the restricting through-hole 4b. In order to prevent this, the edge of the constraining through hole 4b on both the front and back surfaces of the bearing plate body 4 is chamfered.

  The restraining portion 4c extends to the front side of the bearing plate 2 through the lead-out through hole 4a and the space in the support portion 6, and is supported by the support portion 6 and extends to the outside to be described later. It is restrained at a position closer to the slope than the support position by. In other words, the restraining portion 4c can restrain the main rope-like body 12 at a position spaced downward from the support position of the main rope-like body 12 by the support portion 6 with the front and back direction of the bearing plate 2 being the vertical direction. ing.

  Specifically, the restraining portion 4c is a portion of the bearing plate body 4 that is outside the restraining through holes 4b with reference to the lead-out through holes 4a. In other words, the restraining portion 4c is provided at a position away from the support position of the main rope-like body 12 by the support portion 6 to the outside of the lead-out through hole 4a. The four through holes 4a are spaced apart from each other. Specifically, each restricting portion 4c is arranged on a straight line extending from the leading through hole 4a to each restricting through hole 4b. And each restraint part 4c restrains the main rope 12 by pinching the main rope 12 between the back surface and the slope.

  FIG. 3 is a plan view partially showing the slope stabilizing structure 10 according to the embodiment of the present invention. FIG. 4 is a partial view of the vicinity of a predetermined bearing plate 2 in the slope stabilizing structure 10. FIG. 5 is a cross-sectional view taken along the line V-V in FIG. 4. FIG. 6 is a partially enlarged view of the vicinity of the predetermined bearing plate 2 located at the end of the slope stabilization structure 10 in the left-right direction of the slope. Next, the configuration of the slope stabilizing structure 10 according to an embodiment of the present invention will be described with reference to the above drawings.

  The slope stabilization structure 10 according to this embodiment is installed on a slope and used to stabilize the slope, and a plurality of the pressure bearing plates 2 are used.

  Specifically, as shown in FIG. 3, the slope stabilizing structure 10 includes a plurality of the supporting pressure plates 2, a main rope 12, and a sub rope 14.

  The main rope-like body 12 is arranged so as to form a grid vertically and horizontally along the slope, and supports the slope together with the bearing plate 2.

  Specifically, one end of each of the four main ropes 12 is embedded and fixed at each intersection of the lattice. Each of the four main cords 12 is composed of one cord, specifically, one wire rope. As shown in FIG. Each is doubled. The doubled portions of the wire ropes are bundled into one and the sleeve 12a is caulked at the tip portion, thereby integrating the tip portions.

  In addition, another structure is also possible as a structure for bundling the front-end | tip part of the double part of each wire rope. That is, the sleeves are extrapolated from the base end side in a state where the doubled portions of the wire ropes are bundled. Since the tip of the doubled portion of each wire rope is wider than the portion on the proximal end side than that, the portion on the proximal end of the doubled portion of each wire rope is the sleeve. Use the one with the inside diameter that can be inserted, but the portion where the tip of the doubled portion of each wire rope is gathered is not pulled out, and the sleeve is the tip of the doubled portion of each wire rope Slide it to a position where it can move toward and fix it. In this way, the ends of the doubled portions of the wire ropes may be bundled and integrated with the sleeve.

  Then, a doubled portion of each wire rope, that is, one end side of each main rope-like body 12 is inserted into a fixing hole 50 provided at the intersection of the lattice on the ground surface of the slope and the fixing hole 50. The portion is fixed in the fixing hole 50 by the grout filled.

  Each main rope 12 fixed to the ground of the slope in this way extends in four directions from each intersection of the lattice as shown in FIG. Each main rope 12 extending in the four directions from the fixed hole 50 at the intersection of the predetermined grids is in tension with the main rope 12 extending from the fixed hole 50 at another grid adjacent in the extending direction. In this state, they are coupled by the sleeve 12b. Thereby, each main rope-like body 12 is stretched with a predetermined tension. A ring is formed at the end 12c of the main rope-like body 12 located at the end of the slope stabilizing structure 10 in the vertical direction of the slope, and the ring at the end 12c is formed by an anchor not shown. It is designed to be fixed to the ground of the slope.

  The plurality of pressure bearing plates 2 are respectively disposed on the slopes at positions corresponding to the intersections of the lattices, that is, at fixed positions of the main cord-like bodies 12. Specifically, as shown in FIG. 5, each support plate 2 is installed on the slope so that the lead-out through hole 4 a is positioned on the fixed hole 50. A sheath tube 52 is inserted in a range of a predetermined depth from the inlet of the fixing hole 50 so as to slightly protrude from the inlet, and a bearing plate is attached to an end of the sheath tube 52 protruding from the fixing hole 50. When the two lead-out through holes 4a are fitted, the bearing plate 2 is positioned in the direction along the slope.

  The sheath tube 52 may be embedded only in the fixing hole 50 for fixing the bearing plate 2 positioned at the peripheral edge of the slope stabilizing structure 10, or in addition to the fixing hole 50 at the peripheral edge, It may be embedded in a predetermined fixing hole 50 located in the inner region of the stabilization structure 10 or may be embedded in all the fixing holes 50.

  If the sheath tube 52 is embedded in the fixing hole 50 corresponding to the peripheral portion of the slope stabilizing structure 10 and the bearing plate 2 is positioned by the sheath tube 52, the position of the slope stabilizing structure 10 with respect to the slope is roughly determined. Since it can fix, even if it does not position the bearing plate 2 located in the inner area | region of the slope stabilization structure 10 by the sheath pipe 52, a problem does not arise in tensioning the main rope-shaped body 12. On the contrary, the merit of cost reduction can be obtained by omitting the unnecessary sheath tube 52 in the inner region of the slope stabilization structure 10. In addition, when there is a place where the slope stabilization structure 10 is difficult to fix, for example, when the ground is soft and the slope stabilization structure 10 is difficult to fix, the peripheral portion of the slope stabilization structure 10 If the sheath tube 52 is embedded in each of the fixing holes 50 provided in a place where it is difficult to fix the ground in addition to the fixing hole 50, the bearing plate 2 can be securely fixed to the place. Moreover, if the sheath pipe | tube 52 is embed | buried in all the fixing holes 50 and the bearing plate 2 is fixed to each sheath pipe | tube 52, the slope stabilization structure 10 can be more stably installed in a slope.

  A portion of each main cord 12 extending from the ground surface of the slope to the slope is led to the front side of the bearing plate 2 through the corresponding through hole 4a of the bearing plate 2 and the space in the support portion 6. The support portion 6 of the support plate 2 is supported at a position separated from the inclined surface by the end portion on the opposite side of the support plate body 4. Further, the portion of the main rope-like body 12 extending outward from the support position by the support portion 6 is guided to the back side of the bearing plate 2 through the corresponding restricting through hole 4b and is sandwiched between the restricting portion 4c and the inclined surface. As a result, it is restrained at a position closer to the slope than the support position by the support section 6 at a position away from the support position by the support section 6. And the main rope-like body 12 restrained by the restraint part 4c and extending outward is restrained similarly by the restraint part 4c of the adjacent bearing plate 2 and is in tension with the main rope-like body 12 extending outward. Connected with As a result, a predetermined tension is applied to each main rope-like body 12, and the tension of the portion from the portion supported by the support portion 6 to the portion restrained by the restraint portion 4c in the main rope-like body 12 is supported. It has a direction component which presses the part 6 to the slope side. As a result, the bearing plate 2 is pressed to the slope side, and the main rope 12 sandwiched between the restraining portion 4c of the bearing plate 2 and the slope is also pushed to the slope side. The inclined surface is supported by the bearing plate 2.

  Each main rope-like body 12 guided to the front side of the bearing plate main body 4 through the lead-out through hole 4a is supported along a curved surface extending from the inner surface of the supporting portion 6 to the end surface opposite to the bearing plate main body 4. It bends gently to the outside of 6 and extends toward the corresponding restraint 4c.

  As shown in FIG. 3, the sub-cord-like body 14 is stretched between the support plates 2 arranged on the slopes, which are located on the diagonal of the lattice. The sub-cord-like body 14 enhances the integrity of the bearing plates 2 over which the sub-cord-like body 14 is stretched, and supports the ground surface of the slope together with the main rope-like body 12.

  Specifically, a plurality of sub-cord-like bodies 14 made of wire ropes are stretched in a zigzag manner on each supporting plate 2 adjacent in the diagonal direction of the lattice in the left-right direction of FIG. That is, the sub-cord-like body 14 is stretched in order on the respective supporting plates 2 that are obliquely adjacent in the left-right direction in FIG. As shown in FIG. 5, each sub-cord-like body 14 is hung on the outer surface of the support portion 6 of each support plate 2, and is arranged symmetrically with respect to the support portion 6 of one support plate 2. Two sub-cords 14 are hung. And each cord-like object 14 cross | intersects in the center of the said grating | lattice, and is bound by the binding member 14b in the crossing location. Further, as shown in FIG. 6, a ring is formed at the end portion 14c of the sub-cord-like body 14 located at the end portion of the slope stabilizing structure 10 in the left-right direction perpendicular to the up-down direction of the slope. The ring of the end portion 14c is fixed by being hung on the support portion 6 of the corresponding bearing plate 2.

  7 and 8 are views showing a process of joining adjacent main ropes 12 in the slope stabilization method according to one embodiment of the present invention, and FIG. 9 shows an auxiliary tool 60 used in the joining process. It is a figure which shows the fixed state of the main rope-shaped body 12 with respect to the slide member 64. FIG. 7 and 8, the fixing bolt for fixing the main rope 12 to the auxiliary tool body fixing portion 62c and the fixing bolt for fixing the main rope 12 to the slide member fixing portion 64c are omitted. It shows. Next, a slope stabilization method according to an embodiment of the present invention that is performed using the slope stabilization structure 10 will be described with reference to the respective drawings.

  First, in the slope stabilization method according to the present embodiment, the fixing holes 50 are respectively provided in the ground corresponding to the intersections of the grids on the ground of the slope. In each fixing hole 50, a sheath tube 52 is embedded in a range of a predetermined depth from the entrance. The sheath tube 52 is installed so that the upper end portion slightly protrudes on the slope.

  Next, the main rope-like bodies 12 bundled by binding the ends of the doubled portions as described above by the sleeve 12 a are inserted into the respective fixing holes 50. At this time, a grout filling tube (not shown) is simultaneously inserted into the fixing hole 50, and then the grout is filled into the fixing hole 50 through the tube. Then, waiting for the grout to solidify, the main rope 12 is fixed to the fixing hole 50 by the solidified grout.

  Next, the support plate 2 is disposed at a position corresponding to each intersection of the lattice on the slope, that is, at each fixing hole 50. At this time, the support plate 2 is positioned by fitting the lead-out through hole 4 a of the support plate 2 to the end of the sheath tube 52 protruding from the fixing hole 50.

  And when setting each bearing plate 2 on a slope in this way, in each fixed hole 50, the four main rope-like bodies 12 extended on the slope from the ground of the slope are connected to the through holes 4a for leading out the bearing plate 2 and It extends to the front side of the support plate 2 through the space in the support portion 6. Thereafter, the four main ropes 12 are bent in four directions from the inner surface of the support portion 6 along the end face, and the main ropes 12 are respectively passed through the corresponding through holes 4b for restraint. Extend to the back. And each of these main rope-like bodies 12 is extended outside through between each corresponding restraint part 4c and a slope.

  Next, the ends of the main cord-like bodies 12 extending in the direction approaching each other from the adjacent fixing holes 50 are pulled with a predetermined tension, and in this state, the ends of the main cord-like bodies 12 are coupled to each other. At this time, an auxiliary tool 60 as shown in FIGS. 7 and 8 and a pulling machine (not shown) are used.

  Specifically, the auxiliary tool 60 includes an auxiliary tool main body 62 and a slide member 64.

  The auxiliary tool main body 62 includes a cylindrical straight pipe portion 62a, and an auxiliary tool main body leg portion 62b that protrudes perpendicularly to the axial direction of the straight pipe portion 62a from the outer surface of one end of the straight pipe portion 62a. And an auxiliary tool main body fixing portion 62c attached to the tip of the auxiliary tool main body leg portion 62b.

  The auxiliary tool main body fixing portion 62c includes an insertion portion 62d, a nut portion 62e, and a fixing bolt (not shown). The insertion part 62d is a cylindrical member and is disposed in a posture extending in parallel with the straight pipe part 62a. The end portion of one main rope-like body 12 to be coupled to each other is inserted through the insertion portion 62d. The insertion portion 62d is provided with a through hole (not shown) that penetrates the inside and outside of the insertion portion 62d. The nut portion 62e is attached to the outer surface of the insertion portion 62d so that the screw hole just overlaps the through hole of the insertion portion 62d. ing. The fixing bolt (not shown) has a substantially T-shape and is configured in the same manner as a fixing bolt 64g of a slide member fixing portion 64c described later. The unillustrated fixing bolt is screwed into the nut portion 62e, and the one main rope-like body 12 is sandwiched between the front end of the fixing bolt and the inner surface of the insertion portion 62d. The body 12 is fixed to the auxiliary tool main body fixing part 62c.

  The slide member 64 includes a cylindrical slide member main body 64a, a slide member leg 64b projecting perpendicularly to the axial direction of the slide member main body 64a from the outer surface of one end of the slide member main body 64a, The slide member fixing portion 64c is attached to the tip of the slide member leg portion 64b, and the latching portion 64d is projected from the outer surface of the other end portion of the slide member main body 64a.

  The slide member main body 64a is externally attached to the straight tube portion 62a of the auxiliary tool main body 62 so as to be slidable in the axial direction. The slide member leg portion 64b is shorter in length than the assisting device main body leg portion 62b, and the slide member fixing portion 64c extends from the straight pipe portion 62a in a state where the slide member main body 64a is externally inserted into the straight pipe portion 62a. Is shorter than the distance from the straight pipe portion 62a to the auxiliary tool main body fixing portion 62c. The slide member fixing portion 64c includes an insertion portion 64e, a nut portion 64f, and a fixing bolt 64g (see FIG. 9) similar to the assisting device main body fixing portion 62c. And in this slide member fixing | fixed part 64c, the edge part of the other main rope-shaped body 12 combined with the said one main rope-shaped body 12 is penetrated by the insertion part 64e similarly to the case of the auxiliary tool main body fixing | fixed part 62c. At the same time, the other main rope-like body 12 is fixed to the slide member fixing portion 64c by being sandwiched between the tip of the fixing bolt 64g screwed into the nut portion 64f and the inner surface of the insertion portion 64e. Thereby, as shown in FIG. 7, one main rope-like body 12 and the other main rope-like body 12 are overlapped.

  As described above, the end of one main rope-like body 12 is fixed to the auxiliary tool main body fixing portion 62c, and the other main rope-like body 12 is fixed to the slide member fixing portion 64c before fixing both ends thereof. Two sleeves 12b are extrapolated to a portion where the main cord-like bodies 12 are overlapped, that is, a portion located between the both fixed portions 62c and 64c of both the main cord-like bodies 12.

  Then, in a state where both the main cord-like bodies 12 are fixed to the auxiliary tool main body fixing portion 62c and the slide member fixing portion 64c, respectively, the end portion of the straight pipe portion 62a opposite to the auxiliary tool main body leg portion 62b, and the slide member A tensioner (not shown) is set so as to straddle the 64 latching portions 64d, and the sliding member 64 is placed on the opposite side of the straight body portion 62a to the auxiliary equipment body leg portion 62b by the tensioner as shown in FIG. Pull towards the edge. As a result, the two main ropes 12 are attracted to each other, and tension is applied to each main rope 12. In this state, one sleeve 12b is caulked in the vicinity of the slide member fixing portion 64c, and the other sleeve 12b is caulked in the vicinity of the auxiliary device main body fixing portion 62c. To unite. Thereafter, the fixing portions 62c and 64c are removed from the corresponding main rope-like bodies 12, respectively.

  Next, the sub-cord-like body 14 is zigzag over the support portion 6 of the bearing plate 2 that is obliquely adjacent in the left-right direction in FIG. Thereafter, the sub-cords 14 intersecting each other are bound by the binding member 14b at the intersection position. In this way, the slope stabilization structure 10 is installed on the slope, and the slope is supported by the bearing plate 2, the main rope 12 and the sub rope 14 of the slope stabilization structure 10.

  As described above, the slope stabilization method according to the present embodiment is performed.

  As described above, in the present embodiment, each main cord-like body 12 extending on the slope from the ground of the slope is guided to the front side of the support plate 2 through the lead-out through hole 4a of the support plate 2, and The cord-like body 12 can be supported at a position separated from the inclined surface by the support portion 6 of the bearing plate 2, and further, from the support position of each main cord-like body 12 by the support portion 6 to the outside of the lead-out through hole 4a. At a distant position, each main rope-like body 12 can be restrained at a position closer to the slope than the support position by the support portion 6. For this reason, if each main rope 12 is stretched with a predetermined tension along the slope, the tension of the part extending from the portion supported by the support 6 to the restraint 4c in each main rope 12 However, it comes to have a direction component which presses the support part 6 to the slope side. As a result, the entire support plate 2 is pressed and fixed to the inclined surface side, and the support plate can support the inclined surface, and a portion of each main cord 12 that is restrained by the restraining portion 4c is Each main rope 12 can be favorably supported on the slope by being pushed toward the slope by the restraining portion 4c. That is, in the present embodiment, the support plate 2 can be pressed to the slope side by using the tension of the main rope-like body 12 stretched on the slope without using an anchor bolt as in the prior art. The rod-like body can be pressed to the slope side, and the slope can be favorably supported by the bearing plate 2 and the main rope-like body 12. Therefore, in this embodiment, it is possible to stabilize the slope while reducing the number of members.

  Further, in the present embodiment, the restraining portion 4c of the bearing plate 2 is composed of a portion of the bearing plate main body 4 outside the restraining through hole 4b with respect to the outlet through hole 4a as a reference. Compared with the case where the part is attached, the main rope-like body 12 can be constrained to a position closer to the slope than the support position by the support part 6 while reducing the number of members.

  Moreover, in this embodiment, since the support part 6 of the bearing plate 2 consists of a cylindrical body which stands | starts up from the periphery of the through-hole 4a for extraction, the support part 6 can be provided over the perimeter of the through-hole 4a for extraction. . As a result, even when the main ropes 12 led out from the lead-out through-holes 4a extend in the four directions toward the outside, all the main ropes 12 can be supported by the support portion 6. That is, in this embodiment, since a support part can be integrated compared with the case where a support part is provided for every main rope 12 extended in a different direction, a support part for every main rope 12 extended in each direction. The main cord-like bodies 12 extending in the four directions can be supported at positions away from the slope with a simple configuration as compared with the case of providing them.

  Moreover, in this embodiment, the part from the inner surface of the cylindrical body which comprises the support part 6 of the bearing plate 2 to the end surface of an axial direction is formed in the convex surface curved so that it may spread to the radial direction outer side of the said cylindrical body. Therefore, when each main rope-like body 12 passes through the support portion 6 and bends and extends to the outside of the support portion 6 through the end face of the support portion 6, each main rope-like body 12 is connected to the inner surface of the support portion 6. Can be gently bent along the end face. Thereby, the stress concentration in the bent part of each main rope 12 can be relieved, and the damage of the main rope 12 caused by the stress concentration can be suppressed.

  Further, in the present embodiment, the restraining portion 4c of the bearing plate 2 is disposed so as to be spaced apart from each other on the four sides of the lead-out through hole 4a with the lead-out through hole 4a as a center. The four main ropes 12 extending to the front are guided to the front side of the support plate 2 through the space in the lead-out through hole 4a and the support part 6, and each of the four main ropes 12 is supported by the support part 6. While being bent in four directions and being restrained by the corresponding restraining portions 4c, the four main cord-like bodies 12 can stably press the pressure bearing plate 2 to the slope side.

  Moreover, in this embodiment, the slope stabilization structure 10 which has the main rope-like body 12 arranged by the grid | lattice form on the slope, and the several bearing plate 2 arrange | positioned at each intersection of the grid | lattice is comprised. Therefore, the slope can be favorably supported by the slope stabilization structure 10.

  Moreover, in this embodiment, since the sub-cord-like body 14 is stretched | interposed between what is located in the diagonal of the said grating | lattice among each bearing plate 2 which comprises the slope stabilization structure 10, the main rope-like body In addition to 12, the sub-cord-like body 14 can support the slope, and the slope can be further stabilized.

  Further, in the present embodiment, since each sub-cord-like body 14 is stretched over the support portion 6 of each support plate 2, it is not necessary to separately provide a member for stretching the sub-cord-like body 14 on the support plate 2. . For this reason, it is possible to further stabilize the slope by stretching the sub-cord-like body 14 while preventing the configuration from becoming complicated.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes meanings equivalent to the scope of claims for patent and all modifications within the scope.

  For example, the constraining through hole 4b and the constraining portion 4c do not have to be disposed on the four sides of the lead-out through hole 4a as described above.

  Further, the restraining portion may be provided as a separate member from the bearing plate main body 4.

  In addition, as long as the support portion can support the main rope-like body 12 at a position separated from the inclined surface, those having various configurations other than the cylindrical body as described above may be used. For example, the support portion may be disposed away from the lead-out through hole 4a. Moreover, the support part corresponding to each restraint part 4c may be provided on the bearing plate main body 4 separately.

  Further, the four main rope-like bodies 12 extending on the slope from a predetermined fixing point of the slope do not have to be composed of two wire ropes as described above. Each of the bodies 12 may be different.

It is a top view of the bearing plate by one Embodiment of this invention. It is a front view of the bearing plate shown in FIG. It is a top view which shows partially the slope stabilization structure by one Embodiment of this invention. It is the figure which expanded and showed the predetermined bearing plate vicinity among the slope stabilization structures shown in FIG. It is sectional drawing along the VV line in FIG. 4 of the slope stabilization structure by one Embodiment of this invention. It is the figure which expanded and showed the predetermined bearing plate vicinity located in the edge part of a slope stabilization structure in the left-right direction of a slope. It is a figure which shows the process of joining adjacent main rope-like bodies in the slope stabilization construction method by one Embodiment of this invention. It is a figure which shows the process of joining adjacent main rope-like bodies in the slope stabilization construction method by one Embodiment of this invention. It is a figure which shows the fixed state of the main rope with respect to the slide member of the auxiliary tool used for the coupling | bonding process of main ropes.

Explanation of symbols

2 Supporting plate 4a Deriving through-hole 4b Restraining through-hole 4c Restraining portion 6 Supporting portion 10 Slope stabilization structure 12 Main cord (cord)
14 Paracorticoids

Claims (11)

One end of a plurality of cable-like bodies are embedded and fixed at a common fixed location on the ground of the slope, and these rope-like bodies are used for slope stabilization structures that are routed in different directions along the slope. A support plate for supporting the inclined surface while restraining each cord-like body to the inclined surface provided at the fixed portion,
A lead-out through-hole for guiding a portion extending from the ground surface of the slope to the front side of the bearing plate among the cords,
A support portion for supporting each cord-like body led out from the lead-out through hole at a position spaced from the slope;
Provided at a position away from the support position of each cord-like body by the support portion outward of the lead-out through hole, and restrains each cord-like body at a position closer to the slope than the support position by the support portion. A bearing plate having a restraining portion to perform. A restraining through hole is provided at a position spaced outward from the lead-out through-hole from a position where the cord-like body is supported by the support portion, and guides the cord-like body to the back side of the bearing plate. ,
The said restraining part consists of a part outside the said through-hole for restraint on the basis of the said through-hole for extraction, and this part pinches | interposes each said cord-like object between the said slopes. Supporting plate.   3. The bearing plate according to claim 1, wherein the support portion includes a cylindrical body that rises from a peripheral edge of the lead-out through hole.   The pressure bearing plate according to claim 3, wherein a portion from an inner surface of the cylindrical body constituting the support portion to an end surface in the axial direction is formed as a convex surface that is curved so as to spread outward of the cylindrical body.   5. The bearing plate according to claim 1, wherein the constraining portions are spaced apart from each other in four directions of the lead-out through hole with the lead-out through hole as a center. A slope stabilization structure comprising the bearing plate according to claim 1 and used for stabilizing the slope,
One end is respectively embedded and fixed in a common fixed portion of the ground of the slope, and includes a plurality of main ropes arranged in different directions along the slope,
A portion of each main cord-like body extending from the ground surface of the slope to the slope is led to the front side of the bearing plate through the lead-out through hole of the bearing plate, and by the support portion of the bearing plate. It is supported at a position separated from the inclined surface, and further on the inclined surface than the supporting position by the supporting portion at a position away from the supporting position by the supporting portion outwardly of the lead-out through hole by the restraining portion of the bearing plate. A slope stabilization structure that is constrained to a nearby position. A plurality of the fixed portions of the main cord-like body are provided at intervals on the slope, and the bearing plate is provided at each of the fixed portions,
The main cord-like body which is led out from the predetermined through-hole of the corresponding bearing plate through the lead-out through hole, is supported by the support portion of the bearing plate, and is restrained by the restraining portion of the bearing plate. Is led out from the adjacent fixed portion through the lead-out through hole of the corresponding bearing plate, supported by the support portion of the bearing plate, and further restrained by the restraining portion of the bearing plate. The slope stabilization structure according to claim 6, wherein the slope stabilization structure is connected to the state body in a tensioned state. Each main cord-like body is routed so as to form a grid vertically and horizontally on the slope, and is embedded in the ground of the slope at the position of each intersection so as to extend in all directions from each intersection of the grid. Fixed,
The bearing plate is disposed at a position corresponding to each intersection of the lattice,
In each of the support plates, the restraining portions are disposed apart from each other in four directions of the lead-out through hole with the lead-out through hole as a center, and each of the restraint portions extends in the four directions. The slope stabilizing structure according to claim 6 or 7, wherein each is restrained at a position closer to the slope than a support position by the support portion.   The slope stabilizing structure according to claim 8, comprising a plurality of sub-cord-like bodies that are stretched between the support plates arranged at diagonal positions of the lattice.   The slope stabilization structure according to claim 9, wherein each of the sub-cord-like bodies is stretched over the support portion of each of the bearing plates. A plurality of cord-like bodies, and a plurality of bearing plates, each of the bearing plates having a through-hole for penetrating through the bearing plate in the vertical direction, and the direction of the bearing plate being up and down A support part capable of supporting the cord-like body at a position spaced upward from the back surface, and provided at a position away from the support position of the cord-like body by the support part to the outside of the lead-out through hole; Slope stabilization using a slope stabilizing structure having a restraining part capable of restraining the cable-like body at a position spaced downward from a support position of the cable-like body by the support part in a direction A chemical method,
A fixing hole forming step of providing a plurality of fixing holes at a predetermined interval in the ground of the slope;
Bundling a predetermined number of cords out of the plurality of cords and fixing each cord to the slope by embedding one end of each bundle of cords in the fixing holes. A cable fixing process,
A supporting plate arrangement step of disposing the supporting plate at a position corresponding to each of the fixing holes in the inclined surface;
A portion of each cord-like body extending from the ground surface of the slope to the slope is guided to the front side of the bearing plate through the lead-out through hole of the corresponding bearing plate, and the support portion of the bearing plate has the support portion. A routing step of supporting at a position separated from the slope, and then constraining at a position closer to the slope than the support position by the support by the restraining portion of the bearing plate and extending to the outside of the bearing plate;
A slope stabilization method comprising: a step of pulling the cords extending from the adjacent pressure bearing plates with a predetermined tension and coupling the cords to each other in this state.

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