JP2008231720A - Reinforced pipe with pressure receiving panel, method for preventing collapse of ground surface, and method for reinforcing slope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stabilize a slope by preventing a ground surface for stone walls and retaining walls from being collapsed without impairing the stability of a ground and reinforcing a slope such as natural slopes and bank slopes by a simple originality and ingenuity. <P>SOLUTION: The opening end of a reinforced pipe body 1 is inserted into the center hole of a pressure retaining plate 7. A tapered member 8 is fitted onto the reinforced pipe body 1 from the small diameter side, and wedged to the flat plate-like locking part 13 of the pressure retaining plate 7. A tightening member 9 is clamped to the reinforced pipe body 1. When the reinforced pipe body 1 is buried in a ground 2, the pressure retaining plate 7 is pressed against the ground surface 3 as shown by the arrow B, and the ground surface 3 is restrained by the pressure retaining plate 7. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a reinforcing tube with a pressure receiving plate, a ground surface collapse prevention method, and a slope reinforcing method, and more specifically, a reinforcing tube with a pressure receiving plate in which a pressure receiving plate is attached to a reinforcing tube body embedded in the ground, BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground surface collapse prevention method and a slope reinforcement method for preventing the ground surface from collapsing and reinforcing the slope using a reinforcing pipe with a pressure plate.

  Conventionally, long drainage pipes and ground reinforcement pipes (hereinafter, both are simply referred to as “reinforcement pipes”) are buried 3 to 5 m from the ground surface in the ground, and groundwater is drained from the reinforcement pipes to the outside. Reinforcing the shearing force in the ground has been done to stabilize the ground.

  However, if the ground surface is made up of stone walls or retaining walls, for example, the reinforcement pipes are only buried in the ground, and holes are opened in the stone walls and retaining walls around the reinforcement pipes. Therefore, the strength becomes rather weak, and the surfaces of these stone walls and retaining walls cannot be restrained and may be peeled off. Therefore, in such a case, even if the ground can be stabilized, the ground surface cannot be stabilized.

  In addition, even on slopes such as natural slopes and embankment slopes, by embedding the reinforcement pipes in the ground, there is a reinforcing effect on the inside of the ground, but the surface soil has no binding force, and the ground surface is sufficiently stabilized. It is in the present situation that we cannot aim at.

  As a construction method for stabilizing the ground surface, for example, a method called a rock bolt construction method as shown in FIG. 11 has been conventionally known (Non-Patent Document 1).

  In this lock bolt method, a lock bolt 102 fitted with a rust-proof sheath 101 is embedded in the ground, a square washer 104 is brought into contact with the ground surface 103, and a lock bolt 102 is attached with a nut 106 via a washer 105. Fastened and closed with a cap 107. In addition, the cap 107 is filled with a rust preventive material 108 and assembled in a universal joint format, and a certain degree of angle adjustment is possible depending on the installation location such as a retaining wall or a slope.

  Moreover, as another prior art, as shown in FIG. 12, the earth retaining wall construction method of a cut land mountain is known (patent document 1).

  In this Patent Document 1, while inserting the lock bolt 112 inserted through the rust-proof deformed sheath 111 into the ground from the cut surface 113, around the portion protruding from the cut surface 113 of the preventive deformed sheath 111, It is covered with a hardening material 114 containing mortar as a main component, thereby forming a pressure receiving pad 115 to stabilize the cut surface.

JP-A-11-310925 Civil engineering method catalog "Bellcap", [online], February 10, 2007, Okabe Corporation Civil Engineering Division, Internet <URL: https://isabou.net/sponsor/okabe/okabe2.asp>

  However, the construction method described in Non-Patent Document 1 has a large number of parts and requires a rust preventive material 108, resulting in high construction costs. In addition, since the lock bolt is embedded in the ground and the ground surface 103 is pressed by the square washer 104, the pressure contact area is small and there is a limit in preventing the ground surface from collapsing. In addition, the rock bolt method as in Non-Patent Document 1 cannot structurally provide a drainage function of groundwater, and cannot cope with an abnormal increase in groundwater pressure.

  In addition, Patent Document 1 has the same problems as Non-Patent Document 1, and the pressure receiving pad 115 must be formed manually, and the curing material 114 constituting the pressure receiving pad 115 is exposed on the surface. Therefore, it is easy to be affected by the weather, etc., and there is a difficulty in workability.

  The present invention has been made in view of such circumstances, and prevents the collapse of the ground surface such as stone walls and retaining walls without impairing the stability of the ground with simple ingenuity. It is an object to provide a reinforcing pipe with a pressure receiving plate that can reinforce a slope such as a pressure receiving plate, a ground surface collapse prevention method using the reinforcing tube with a pressure receiving plate, and a slope reinforcing method And

  In order to achieve the above-mentioned object, the reinforcing pipe with a pressure receiving plate according to the present invention is a reinforcement with a pressure receiving plate in which a pressure receiving plate is attached to a reinforcing pipe main body embedded in the ground from an inclined or vertical surface. The reinforcing tube main body is formed with a female screw portion in the vicinity of an open end exposed from the ground surface, and the pressure receiving plate is provided with a center hole through which the reinforcing tube main body can be inserted, and A pressure bearing plate with a locking portion erected on the edge of the center hole, and a substantially cylindrical shape whose outer periphery is tapered and whose inner diameter on the small diameter side is fitted to the outer diameter of the reinforcing pipe body A tapered member having a shape and a cylindrical fastening member formed with a male screw portion, and the open end of the reinforcing tube body is inserted into the center hole of the bearing plate, and the tapered member is The engagement of the bearing plate by being externally fitted to the reinforcing pipe body from the small diameter side And the fastening member is fastened to the reinforcing pipe main body, and when the reinforcing pipe main body is buried in the ground, the bearing plate is pressed against the ground surface. It is said.

  In the reinforcing tube with a pressure receiving plate of the present invention, the female screw portion is formed with a plurality of concave spiral portions at predetermined intervals, and the male screw portion is formed of a convex spiral portion.

  Furthermore, the reinforcing tube with a pressure receiving plate of the present invention is characterized in that the reinforcing tube main body has a plurality of holes formed in the longitudinal direction.

  The ground surface collapse prevention method according to the present invention includes a reinforcing tube main body having a female screw portion formed in the vicinity of an open end, a center hole through which the reinforcing tube main body can be inserted, and an edge of the central hole. A pressure-bearing plate having a locking portion erected, and a substantially cylindrical taper member having an outer periphery formed in a taper shape and an inner diameter on the small-diameter side fitted with an outer diameter of the reinforcing tube body; And a cylindrical fastening member having a male screw portion, and the reinforcing tube main body is driven into the ground so that the open end is exposed on the surface, and the entire flat portion of the bearing plate is in contact with the ground surface. The reinforcing tube main body is inserted through the center hole, the taper member is externally fitted to the reinforcing tube main body from the small diameter side, the fastening member is fastened to the reinforcing tube main body, and the taper member is supported by the support member. The bearing plate is pressed against the ground surface by being wedged on the locking portion of the pressure plate. It is characterized by constraining the 該地 surface with the bearing capacity plate.

  Further, the slope reinforcing method according to the present invention is provided with a reinforcing pipe body having a female thread portion formed in the vicinity of an open end, a center hole through which the reinforcing pipe body can be inserted, and an edge of the center hole. A pressure bearing plate with a stop portion erected, a substantially cylindrical taper member whose outer periphery is formed in a tapered shape and whose inner diameter on the small diameter side is fitted to the outer diameter of the reinforcing tube main body, A cylindrical fastening member having a threaded portion, and driving the reinforcing tube body into the slope so that the open end is exposed on the surface, so that the entire flat portion of the bearing plate abuts the slope surface layer surface. The reinforcing tube main body is inserted into the central hole, the taper member is fitted onto the reinforcing tube main body from the small diameter side, the fastening member is fastened to the reinforcing tube main body, and the taper member is attached to the bearing plate. The pressure plate is pressed against the surface of the inclined surface by being wedged on the locking portion of So, it is characterized in that to restrain the slope in the bearing capacity plate.

  According to the reinforcing pipe with a pressure receiving plate, the open end of the reinforcing pipe main body is inserted into the center hole of the supporting pressure plate, and the taper member is externally fitted to the reinforcing pipe main body from the small diameter side so that the locking of the supporting pressure plate is performed. When the fastening member is fastened to the reinforcing pipe body and the reinforcing pipe body is embedded in the ground, the bearing plate is pressed against the ground surface, so that the ground surface is supported. It will be restrained by the pressure plate, and these ground surfaces can be prevented from collapsing or peeling off.

  In addition, since the female screw portion of the reinforcing tube body is formed with a plurality of concave spiral portions at predetermined intervals, and the male screw portion of the fastening member is formed of a convex spiral portion, the male screw portion and the female screw portion are It can be easily produced by press working without requiring cutting, can be handled with a thin reinforcing tube body and a fastening member, and has excellent workability.

  In addition, since the reinforcing pipe main body has a large number of holes in the longitudinal direction, it also has a function of draining groundwater, and can prevent slope collapse and the like more effectively.

  Further, according to the above-mentioned ground surface collapse prevention method, the reinforcing pipe body is placed in the ground so that the open end is exposed to the surface, and the flat surface of the bearing plate is placed in the center hole so that the entire surface is in contact with the ground surface. The reinforcing tube main body is inserted, the taper member is externally fitted to the reinforcing tube main body from the small diameter side, the fastening member is fastened to the reinforcing tube main body, and the taper member is wedged on the engaging portion of the bearing plate. Since the bearing plate is brought into pressure contact with the ground surface and the ground surface is restrained by the bearing plate, the ground surface is restrained by the bearing plate and effectively prevents the ground surface from collapsing and falling off. Can do.

  Further, according to the slope reinforcing method, the reinforcing pipe body is placed in the slope so that the open end is exposed on the surface, and the flat surface of the bearing plate is placed in the center hole so that the entire surface of the bearing plate contacts the slope surface layer. The reinforcing tube main body is inserted, and the taper member is externally fitted to the reinforcing tube main body from the small diameter side, the fastening member is fastened to the reinforcing tube main body, and the taper member is wedged to the engaging portion of the bearing plate. The pressure bearing plate is brought into pressure contact with the slope surface layer and the slope is restrained by the pressure bearing plate, so that the slope can be effectively reinforced. In particular, by installing a reinforcing pipe with a pressure receiving plate over the entire slope, deformation of the slope is suppressed, and the entire slope can be reinforced.

  As described above, according to the reinforcing pipe with a pressure receiving plate and the ground surface collapse preventing method and the slope reinforcing method according to the present invention, it is possible to effectively prevent the ground surface from collapsing without damaging the stability of the ground by a simple ingenuity. And can effectively reinforce the slope. In addition, since the bearing plate is brought into contact with the ground surface or the slope, it can flexibly cope with an arbitrary inclination angle, and can be easily applied to a ground surface or slope having an inclined or vertical shape. In addition, no hardener or the like is used, the number of parts is small, and construction can be performed easily and inexpensively.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a front view showing an embodiment of a reinforcing pipe with a pressure receiving plate according to the present invention. The reinforcing pipe with a pressure receiving plate is provided on the ground surface 3 side of a reinforcing pipe main body 1 embedded in the ground 2. A pressure receiving panel 4 is attached.

  The reinforcing tube main body 1 has a large number of holes 5 penetrating in the longitudinal direction. In the present embodiment, the holes 5 are formed in a long hole shape and are arranged in a staggered manner in the circumferential direction. Further, the reinforcing pipe main body 1 has an open end on the ground surface 3 side, and the tip end portion 6 is crushed flat and closed in a substantially sharp shape.

  And the reinforcement pipe | tube main body 1 can be easily embed | buried in the ground 2 from the ground surface 3 side by using placement apparatuses, such as a concrete breaker. Further, since the reinforcing pipe body 1 is provided with a large number of holes 5..., Groundwater can be drained to the outside through these holes 5. It is possible to prevent slope failures caused by

  2 is an enlarged view of part A of FIG. 1, and FIG. 3 is a cross-sectional view of FIG.

  That is, the pressure receiving plate 4 includes a pressure bearing plate 7 through which the reinforcing pipe body 1 is inserted, a taper member 8 that is externally fitted to the reinforcing pipe body 1, and a fastening member 9 that is fastened to the reinforcing pipe body 1. As shown by an arrow B, the bearing plate 7 is in pressure contact with the ground surface 3.

  4A and 4B are diagrams showing the main part of the reinforcing tube main body 1, in which FIG. 4A is a front view and FIG. 4B is a view taken along the line XX of FIG.

  That is, the reinforcing tube main body 1 has an open end 10 so that the ground surface 3 side is exposed as described above. A plurality of concave spiral portions 11 are formed at predetermined intervals on the outer periphery in the vicinity of the open end 10, and female threads are formed by the concave spiral portions 11.

  5A and 5B are views showing the bearing plate 7, in which FIG. 5A is a front view and FIG. 5B is a right side view of FIG. 5A.

  That is, the bearing plate 7 is formed in a circular shape having a sufficient size so as to abut on the ground surface 3, and a substantially elliptical center hole 12 is penetrated so that the reinforcing tube body 1 can be inserted. Further, a pair of left and right flat-plate-shaped locking portions 13 are erected on the edge of the substantially straight portion of the center hole 12. The locking portion 13 is formed in a substantially trapezoidal shape, and the locking member 13 can hold the taper member 8 in a wedge shape.

  6A and 6B are diagrams showing the taper member 8, in which FIG. 6A is a front view and FIG. 6B is a right side view.

  That is, the taper member 8 has a substantially cylindrical shape with an outer periphery 14 formed in a taper shape, and is formed so that the inner diameter D of the small diameter side 15 is fitted to the outer diameter of the reinforcing tube body 1. A circular outer casing 17 is provided on the large diameter side 16.

  7A and 7B are views showing the fastening member 9, in which FIG. 7A is a front view and FIG. 7B is a right side view.

  That is, the fastening member 9 is formed in a cylindrical shape whose both ends are open ends, and a hexagonal outer flange portion 18 is formed at one end portion. A convex spiral portion 19 is formed on the outer periphery, and the convex spiral portion 19 constitutes a male screw portion.

  The reinforcement pipe with a pressure receiving plate having such a component is constructed on the ground surface 3 as shown in FIG.

  That is, first, using a placing device such as a concrete breaker, the reinforcing pipe body 1 is embedded in the ground 2 so that the open end 10 of the reinforcing pipe body 1 is exposed from the ground surface 3. Next, the reinforcing tube body 1 is inserted into the center hole 12 of the bearing plate 7 so that the entire flat surface of the bearing plate 7 contacts the ground surface 3. Next, the taper member 8 is externally fitted to the reinforcing tube main body 1 from the small diameter side 15 and is sandwiched between the locking portions 13 of the pressure bearing plate 7 in a wedge shape. Further, the convex spiral portion 19 of the fastening member 8 and the concave shape of the reinforcing tube main body 1. The fastening member 8 is fastened to the reinforcing tube body 1 by screwing the spiral part 11. At this time, the taper member 8 is wedged to the engaging portion 13 by the fastening force of the fastening member 8 to the reinforcing tube body 1, whereby the force in the direction of the arrow B acts on the bearing plate 7 and the ground surface 3. The ground surface 3 is restrained by the support plate 7.

  As a result, the ground surface 3 can be prevented from collapsing. In particular, when the ground surface 3 is composed of stone walls or retaining walls, when the reinforcing pipe body 1 is placed in the ground 2, holes are opened in the stone walls and retaining walls located around the reinforcing pipe body 1. As a result, the strength becomes weak and the ground surface 3 tends to collapse, but in the present embodiment, the ground surface 3 is restrained by the support plate 7, thereby preventing the ground surface 3 from collapsing. Yes.

  Further, since the bearing plate is brought into contact with the ground surface, it is possible to flexibly cope with an arbitrary inclination angle, and the workability is also good. In addition, no hardener or the like is used, the number of parts is small, and construction can be performed easily and inexpensively.

  Furthermore, by using the above-mentioned reinforcing pipe with pressure plate, not only the ground surface 3 formed in an inclined shape or a vertical shape such as a stone wall or a retaining wall, but also a natural slope or an embankment slope or the like is substantially the same. For the reason, it is possible to prevent the surface soil and the like from sliding down, to reinforce the slope, and to stabilize the slope.

  FIG. 9 is a perspective view schematically showing a construction example in which the reinforcing pipe with the pressure receiving plate is installed vertically and horizontally on the slope 21.

  In this construction example, after a large number of reinforcing pipe bodies 1 are placed vertically and horizontally from the slope surface layer surface 22 into the slope 21, the pressure receiving plate 4 is attached by the method described above.

  Thus, by installing a number of reinforcing pipes with pressure receiving panels in the vertical and horizontal directions of the slope surface layer 22, the deformation of the slope surface layer 22 is restrained, and the entire slope 21 is reinforced, thereby stabilizing the slope 21. Can be planned.

  Needless to say, the present invention is not limited to the above-described embodiment, and can be changed without departing from the scope of the invention. In the above embodiment, the reinforcing tube main body 1 has a large number of holes 5 penetrating in the longitudinal direction so as to ensure the drainage function. However, the reinforcing tube main body 23 is, for example, shown in FIG. As shown in FIG. 4, it may be a simple cylindrical shape. Further, the length dimension and the diameter dimension of the reinforcing tube main bodies 1 and 23 are not particularly limited, and it goes without saying that any one can be used depending on the construction site.

  Further, the outer shape of the pressure plate 7 is not limited to a circular shape, and may be a square shape. Also, the shape of the engaging portion 13 of the pressure plate 7 is such that the taper member 8 is held in a wedge shape. As long as it can be wedged like this, it is not limited to the shape of the above embodiment.

  Further, the material of each constituent member of the reinforcing pipe with pressure receiving plate is not particularly limited, and may be any metal such as iron or aluminum, or resin such as vinyl chloride resin.

It is a front view which shows one Embodiment of the reinforcement pipe with a pressure board which concerns on this invention. FIG. 2 is an enlarged view of a part A in FIG. 1. FIG. 3 is a cross-sectional view of FIG. 2. It is a principal part enlarged view of a reinforcement pipe body, Drawing 4 (a) is a front view, and Drawing 4 (b) is an XX arrow line view of Drawing 4 (a). FIG. 5A is an enlarged view of a main part of the bearing plate, FIG. 5A is a front view, and FIG. 5B is a right side view of FIG. It is a principal part enlarged view of a taper member, Comprising: Fig.6 (a) is a front view, FIG.6 (b) is a right view. FIG. 7A is an enlarged view of a main part of the fastening member, and FIG. 7A is a front view and FIG. 7B is a right side view. It is an exploded view which shows the assembly procedure of the reinforcement pipe with a pressure board. It is the perspective view which showed typically the example of construction in which the reinforcement pipe with a pressure board was installed in the slope vertically and horizontally. It is a front view which shows other embodiment of the reinforcement pipe with a pressure board which concerns on this invention. It is sectional drawing of the rock bolt construction method described in the nonpatent literature 1. It is sectional drawing of the construction method described in patent document 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reinforcement pipe body 2 Ground 3 Ground surface 4 Pressure receiving plate 7 Bearing plate 8 Taper member 9 Fastening member 10 Open end 11 Concave spiral portion (female screw portion)
12 Center hole 13 Locking part 14 Outer periphery 15 Small diameter side 19 Convex spiral part (male thread part)
21 Slope 22 Slope surface 23 Reinforcing pipe body

Claims (5)

A reinforcing pipe with a pressure receiving plate in which a pressure receiving plate is attached to a reinforcing pipe main body embedded in the ground from a ground surface formed in an inclined or vertical shape,
The reinforcing tube main body is formed with a female screw portion in the vicinity of the open end exposed from the ground surface.
The pressure receiving plate is provided with a center hole through which the reinforcing tube main body can be inserted and a supporting plate having an engaging portion standing at an edge of the center hole, and an outer periphery is formed in a taper shape and a small diameter side. A substantially cylindrical taper member formed so that an inner diameter is fitted to the outer diameter of the reinforcing tube body, and a cylindrical fastening member formed with a male screw part,
The open end of the reinforcing pipe body is inserted into the center hole of the pressure bearing plate, and the taper member is externally fitted to the reinforcing pipe body from the small diameter side to the locking portion of the pressure supporting plate. And the fastening member is fastened to the reinforcing pipe body,
When the reinforcing tube main body is embedded in the ground, the supporting plate is pressed against the ground surface.   2. The reinforcing pipe with pressure receiving plate according to claim 1, wherein the female screw portion includes a plurality of concave spiral portions formed at predetermined intervals, and the male screw portion includes a convex spiral portion.   3. The reinforcing tube with a pressure receiving plate according to claim 1, wherein the reinforcing tube main body has a plurality of holes formed in a longitudinal direction. A reinforcing tube body having a female screw portion formed in the vicinity of the open end, a support hole plate provided with a center hole through which the reinforcing tube body can be inserted, and a locking portion standing at the edge of the center hole; Is provided with a substantially cylindrical taper member formed so that the inner diameter on the small diameter side is fitted to the outer diameter of the reinforcing tube body, and a cylindrical fastening member having a male screw portion. ,
The reinforcing pipe body is driven into the ground so that the open end is exposed on the surface, and the reinforcing pipe body is inserted into the center hole so that the entire flat portion of the bearing plate is in contact with the ground surface. A taper member is externally fitted to the reinforcing tube main body from a small diameter side, the fastening member is fastened to the reinforcing tube main body, the taper member is wedged to the engaging portion of the pressure supporting plate, and the pressure supporting plate is A ground surface collapse prevention method, characterized in that the ground surface is pressed against the ground surface and the ground surface is restrained by the bearing plate. A reinforcing tube body having a female screw portion formed in the vicinity of the open end, a support hole plate provided with a center hole through which the reinforcing tube body can be inserted, and a locking portion standing at the edge of the center hole; Is provided with a substantially cylindrical taper member formed so that the inner diameter on the small diameter side is fitted to the outer diameter of the reinforcing tube body, and a cylindrical fastening member having a male screw portion. ,
The reinforcing pipe body is placed in the slope so that the open end is exposed on the surface, and the reinforcing pipe body is inserted into the center hole so that the entire flat portion of the bearing plate is in contact with the slope surface layer, The taper member is externally fitted to the reinforcing tube main body from the small diameter side, the fastening member is fastened to the reinforcing tube main body, and the taper member is wedged to the engaging portion of the pressure supporting plate to thereby attach the pressure supporting plate. A slope reinforcing method, wherein the slope surface layer is pressed against the slope and the slope is restrained by the bearing plate.

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