JP2006070472A - Slope stabilizing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To carry out extremely easy construction for stabilizing a slope which needs stability. <P>SOLUTION: A slope stabilizing device comprises a steel rod 1 anchored into a predetermined position of a slope A; a recess 4 of bowl shape provided on the slope around the steel rod; a pressure receiving member 7 of bowl shape with a grounding collar 6 fitted into the recess, with the steel rod passing through a center through hole 5 in the bottom face; a pressure receiving plate 9 dropped into the pressure receiving member, with the steel rod passing through a center through hole 8; a resilience imparting member 10 such as a plate spring fittingly mounted to the steel rod and placed on the pressure receiving plate; a nut 12 screwed from the ground projecting end of the steel rod to compress the resilience imparting member; bearing members C of the slope radially extended with the ends mounted to the round projecting end side of each steel rod through mounting means; and tension members E for connecting front-rear and right-left mounting means to each other. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  This invention is, for example, mounting a pressure receiving material on the ground protruding end of a tension member that performs an anchor function fixed on a slope such as an inclined slope facing an expressway or various facilities, or an inclined slope that may collapse, The present invention relates to a slope stabilizer that transmits a tension force applied to a tension member to a slope to stabilize the slope.

  As shown in Patent Document 1, as a prior art of the slope stabilization method of the method of attaching a pressure receiving material to the ground protruding end of the tension member fixed on the slope and transmitting the tension applied to the tension member to the slope, The concrete pressure receiving block produced in the factory is carried to the work site.

  On the other hand, at each position where the pressure receiving block is fixed on the slope of the site, after drilling from the slope into the ground and inserting the tensile member into the drilled hole, the tensile member is inserted while injecting the grout material into the hole. To settle.

  Thereafter, the pressure receiving block is carried to the fixing position of the tension member, and the ground protruding end of the tension member is passed through the through hole of the center of the carried pressure receiving block.

Thereafter, the slope is stabilized while the pressure receiving block is pressed against the slope while the nut is screwed from the ground protruding end of the tension member.
JP-A-6-330526

  According to the slope stabilization method as described above, since the pressure-receiving block produced in the factory is used, it is bulky, requires a large space for storage, and is difficult to handle due to its large weight.

  Then, when a heavy machine is required to carry it to the site and carry the pressure-receiving block that has been carried to the fixing position, and when it cannot be carried using the heavy machine, it is slid using a wire or a rod that is pulled by a wire. In addition to this, it is necessary to pay attention to avoid collision and the pressure receiving block slid and the ground protruding end of the tension member that has been fixed.

  There is also a problem that a great deal of labor is required to allow the ground protruding end of the tension member to pass through the through hole of the pressure receiving block that has been carried.

  In particular, when a pressure receiving block of concrete product is placed on the slope, if the slope has irregularities, the entire lower surface of the protruding portion protruding in each direction (four directions) of the pressure receiving block does not contact the slope. That is, a contact portion and a non-contact portion can be formed by the unevenness.

  For this reason, the pressure applied to the slope by the entire lower surface of the pressure receiving block cannot be applied, resulting in a disadvantage that the intended slope stability is impaired.

  Furthermore, if there is a standing tree on the ground contact part of the protruding part of the pressure receiving block, the standing tree is cut out so as not to get in the way, so there is also a problem of deteriorating the environment.

  Therefore, the present invention is to provide a slope stabilizing device that solves each of the problems described above.

  In order to solve the above-mentioned problems, the present invention provides a steel rod fixed at a predetermined position on a slope, a bowl-shaped recessed portion provided on the slope around the steel rod, and a central through hole on a bottom surface. A rod-shaped pressure-receiving material with a grounding rod that is inserted through the recessed portion through a steel rod, a pressure-receiving plate that is dropped into the pressure-receiving material by passing the steel rod through a central through hole, and the steel rod An elastic force imparting member such as a disc spring fitted on the pressure receiving plate, a nut that is screwed from the ground protruding end of the steel rod and compresses the elastic force imparting member, and the ground protruding end of each steel rod A configuration is adopted which comprises a pressure bearing member of the slope that spreads radially with a terminal attached to the side, and a tension member that connects the front and rear and left and right attachment means.

  Then, the elastic member such as a disc spring is compressed by screwing the nut and pressure is applied to the pressure-receiving material with a hook through the pressure-receiving plate to apply a certain pressure to the ground, and the ground is also stabilized by the supporting member. At the same time, the steel rods are connected by the tension members connecting the front and rear and left and right attachment means, and the stability of the slope A is greatly improved.

  In addition, a configuration may be employed in which a nut is screwed from the ground protruding end of the steel rod to apply a pressing force, and a pressure receiving member that applies a vertical pressure to the ground is provided to each supporting member.

  Then, the pressure supporting member is pressed against the natural ground via the pressure receiving member.

  Furthermore, the structure which connected the opposing front-end | tips of the said bearing member through the suitable connection means may be employ | adopted.

  Then, the support member is not moved or lifted.

  Moreover, the structure which connected the both ends of the tension | tensile_strength diagonally to the said right and left high side attachment means and low place side attachment means may be employ | adopted.

  This will further stabilize the natural ground by connecting the steel bars.

  Furthermore, a steel rod fixed at a predetermined position on the slope, a bowl-shaped recessed portion provided on the slope around the steel rod, and the steel rod penetrated through a central through hole on the bottom surface and fitted into the recessed portion. A rod-shaped pressure-receiving material with a grounding bar, a pressure-receiving plate that has the steel rod penetrated through a central through hole and dropped into the pressure-receiving material, and is fitted on the steel rod and placed on the pressure-receiving plate A resilient spring member such as a disc spring, a nut that is screwed in from the ground protruding end of the steel rod and compresses the elastic force imparting member, and a terminal is attached to the ground protruding end side of the steel rod via attachment means to spread radially. And the structure which consists of the tension member which connected the opposing front-end | tip via the expansion-contraction adjustment means is employ | adopted.

  Then, the elastic member such as a disc spring is compressed by screwing the nut and pressure is applied to the pressure receiving material with a brace through the pressure receiving plate to apply a certain pressure to the ground, and the steel rods are connected by the tension member. To stabilize the slope significantly.

  Moreover, the structure which provided the insulating layer in the underground predetermined range from the lower side of the surrounding surface pressure receiving material of the said steel rod may be employ | adopted.

  Then, the steel bar and the grout material are insulated.

  As described above, according to the slope stabilizing device of the present invention, since the slope is stabilized while being assembled very easily on the slope, it is possible to carry in a secondary concrete product (pressure-receiving material produced in a factory) or after In addition to eliminating the inconvenience of significantly increasing the cost of heavy equipment and heavy labor for installation, it also compresses the elastic member such as a disc spring by screwing the nut into a bowl shape in the recess Since the pressure-sensitive material is pressed and the ridge-shaped pressure-sensitive material is pressed against the ground surface, in addition to constantly applying a constant pressure to the ground and increasing the shear resistance of the ground, it is possible to stabilize the slope. For grounds where there is a risk of collapse, a pressure receiving material is installed on the ground protruding end side of the steel rod, and the compression applying member such as a disc spring is compressed and tensioned by screwing the nut, so effective reverse winding Construction Can safety can be improved.

  And since each supporting member is pressed onto the slope through the restoring force of the pressure deformation while pressing and deforming the pressure receiving member that spreads radially and the pressure receiving member as the nut is screwed, the vertical pressure acting on the sliding surface through the ground Greatly increase.

  The result is a significant increase in soil shear strength.

  In addition, the natural ground can be integrated by connecting the opposite ends of the bearing members via the connecting means or by connecting the steel rods via the tension member, and the stability of the slope can be further improved.

  Furthermore, since the insulating layer is provided from the lower side of the circumferential surface pressure receiving material of the steel bar to a predetermined range in the ground, the steel bar and the grout material are insulated.

  Then, the pressure loaded by the elastic force applying means such as a disc spring when there is no insulating layer is transmitted only to the ground surface, but the above-mentioned insulating layer has a function of transmitting from the installation position of the pressure receiving material to the lower ground. There is also an effect of increasing the shear strength of the surface layer (collapse) of natural ground.

  Embodiments of the present invention will be described with reference to the accompanying drawings.

In the first embodiment of the present invention, as shown in FIG.
A steel rod 1 having an upper portion protruding from the slope A is fixed at a predetermined position.

  As shown in FIGS. 1 and 2, the dotted fixation of the steel rod 1 is performed by inserting the steel rod 1 into the hole 2 obtained by drilling while drilling from the slope A toward the ground. 2 is filled with grout material 3.

  Further, around the steel rod 1, a bowl-shaped recessed portion 4 is provided by excavation from the slope A to the ground.

  In the recessed portion 4, a metal pressure member 7 with a metal rod 6 that penetrates the steel rod 1 is inserted into the through hole 5 at the center of the bottom surface, and the flange 6 comes into contact with the slope A along with the fitting.

  The pressure receiving material 7 is a reinforced type using an anchor material with a thick member for the purpose of increasing the pressure receiving area or by adding a reinforcing material to increase the diameter to about 1.5 m and increase the proof stress. It can be.

  Next, the steel rod 1 is passed through the central through hole 8 and the pressure receiving plate 9 is dropped into the pressure receiving material 7.

  The pressure receiving plate 9 that has been dropped comes into contact with the inner surface of the pressure receiving material 7 and the pressure receiving plate 9 stops at the bottom of the pressure receiving material 7.

  Thereafter, the elasticity applying member 10 such as a disc spring and the washer 11 are sequentially fitted from the ground protruding end of the steel bar 1, and the elasticity applying member 10 is placed on the pressure receiving plate 9.

  The function of the pressure receiving plate 9 can be provided by increasing the thickness of the inner surface of the bottom of the pressure receiving material 7 and forming a flat portion on which the elasticity applying member 10 is placed.

  In the case shown in the figure, a disc spring that is effective in the spring effect of the applied preceding load is used for the elasticity applying member 10, but a coil spring or the like may be used as a spring that achieves the same purpose.

  Thus, the flange 6 is pressed against the slope A and the pressure receiving material 7 is pressed against the recessed portion 4 while compressing the elasticity applying member 10 by tightening the nut 12 screwed from the ground protruding end of the steel rod 1.

  The pressure in the vertical direction due to the compression is transmitted to the pressure receiving material 7 through the pressure receiving plate 9, and this transmitted pressure increases the vertical pressure acting on the slip surface through the ground, resulting in an increase in the shear strength of the soil. .

  After that, as shown in FIG. 2 to FIG. 4, the ends of the supporting members C that spread radially on the slope A are attached to the ground protruding end side of the steel rod 1 via the attachment means B.

  In the case shown in the drawing, the mounting means B includes a disk 14 placed so that the peripheral edge overlaps the flange 6 while passing the steel rod 1 through the central through hole 13, and the ground protruding end of the steel rod 1. Screw the nut 15 to be screwed and press the disc 14 onto the flange 6, the screw hole 16 provided at the peripheral edge of the disc 14 at a predetermined interval, and the through hole 17 provided at the end of the support member C. The bolt 18 that is screwed into the hole 16 is used. However, the end of the bearing member C may be attached to the steel rod 1 side by other attachment methods (means).

  The upper exposed portion of the steel bar 1 from the disk 14 is covered with a cap 19.

  As is well known, the cap 19 is formed on the threaded portion of the outer peripheral surface of the washer 28 disposed below the upper ring 20 fitted on the steel rod 1 below the nut 15. Screw in the screw part at the lower edge of the circumference.

  At that time, leakage of rust preventive oil filled in the cap 19 is prevented by compressing the O-ring mounted on the entire lower surface of the cap 19 against the upper surface of the disk 14.

  As the above-mentioned supporting member C, as shown in FIGS. 1 to 5, an attachment fitting 22 having through holes 17 attached to both ends of one or two square pipes 21 via fasteners 101 is appropriately used. Or through-holes attached to both ends of a wooden bar 23 (for example, using thinned wood for the purpose of waste material) via fasteners 101 as shown in FIGS. There is one in which a mounting bracket 22 having 17 is connected by an appropriate method, and both ends of the bearing member C are attached to the discs 14 of the left and right, upper and lower steel bars 1.

  At that time, as shown in the figure, a metal brazing material 25 is fitted into the groove 24 along the outer peripheral axis (longitudinal direction) of the thinned bar 23 and both ends of the brazing material 25 are attached via the fasteners 101. As a result, the strength can be significantly increased.

  Moreover, as shown in FIG.10 and FIG.11, only the terminal of the bearing member C made from the porous steel plate 27 may be attached to the disc 14. FIG. And the said porous steel plate 27 can increase an intensity | strength by overlapping two sheets.

  In that case, it connects via the turnbuckle as the connection means 26 which connects the opposing front ends of the bearing members C and C, and it is in a tension state.

  Then, the slope A is stabilized by the bearing member C in contact with the slope A.

  In 2nd Embodiment of this invention, as shown in FIG.12 and FIG.13, the nut 31 is screwed into the ground side protrusion part of the steel bar 1 of 1st Embodiment from the ground protrusion end of the steel bar 1. As shown in FIG. A pressure receiving member D is provided to apply a vertical stress to the ground (slope A) to each supporting member C while applying a pressure.

  In the illustrated case, the pressure receiving member D is formed by passing the steel rod 1 through the through hole 30 at the center of an inverted dish-like plate 29 made of a spring steel plate having a certain degree of elasticity, and the upper surface of each pressure supporting member C. The plate-like plate 29 is brought into contact with the peripheral edge of the plate-like plate 29, and then the plate-like body 29 is moved down by tightening the nut 31 screwed from the ground protruding end of the steel rod 1, and the supporting members C are moved by the peripheral edge of the plate-like body 29 It comes to hold down.

  Then, a vertical pressure is applied to the slope A via the pressure receiving member D which is bent to each supporting member C and generates a spring effect, thereby increasing the shear resistance of the natural ground.

  For this reason, the stability of the slope A is greatly increased.

  The fixing and working effect of the steel rod 1 and the pressure receiving material 7, the mounting and working effect of the bearing member C, and the installation of the cap 19 for preventing rust covering the upper steel rod 1 of the dish-like body 29 are the first. The explanation is omitted because it is the same as the embodiment.

  In the third embodiment of the present invention, as shown in FIGS. 3, 4, 10, 12, 13, 14, 15, etc., the left and right high-side attachment means B of the first and second embodiments and the lower Both ends of the tension member E are connected to the place-side attachment means B and to the upper and lower attachment means B.

  In the illustrated case, the tension member E includes a pair of iron rods 36 and 36 whose opposite ends are connected to each other via a turnbuckle 35 so as to be adjustable, and an annular portion 37 as an attachment portion at the ends of both iron rods 36 and 36. The bolt 18 inserted into the annular portion 37 is screwed into the screw hole 16 of the disk 14 and attached, but it may be attached by other methods.

  For this reason, the stabilization of the slope A is significantly improved by the connection by the tension members E between the steel bars 1.

  In the fourth embodiment of the present invention, as shown in FIGS. 10, 12, 14, and 15, the steel bar 1 is fixed on the slope A through the same procedure as that of the first embodiment, and then the concave of the slope A is obtained. The pressure receiving material 7 is fitted into the insertion portion 4, the pressure receiving plate 9 is dropped into the pressure receiving material 7, and the elastic member 10 such as a disc spring on the pressure receiving plate 9 is compressed by screwing the nut 12, and the pressure receiving material 7 is applied to the slope A. To fix.

  Thereafter, the end of the tension member F is obliquely attached to the ground side attachment means B of the steel bar 1, and the opposite ends of the tension member F are connected via the expansion / contraction adjustment means G.

  The tension member F is the same as the tension member E of the third embodiment, and the same applies to the turnbuckle of the expansion / contraction adjusting means G, and the description thereof is omitted.

  Further, the effects of fixing the steel rod 1, the pressure receiving material 7, the pressure receiving plate 9, the elasticity applying member 10, and the screwing of the nut 12 are the same as in the first embodiment, and the description thereof is omitted.

  Then, similarly to the tension member E, the stabilization of the slope A is greatly improved by the connection of the planar X-shaped tension members F of the steel bars 1 (each adjacent steel bar 1).

  In 5th Embodiment of this invention, as shown in FIG. 17, the insulating layer H is provided in the underground predetermined range from the lower side of the outer periphery pressure receiving material 7 of the steel bar 1 of 1st and 4th embodiment. is there.

  The insulating layer H is provided by fitting a tape or a polyvinyl chloride tube around the outer periphery of the steel rod 1 with a thickness of, for example, about 0.5 m to 5 m, or a coating film.

  Then, since the steel rod 1 and the grout material 3 are insulated, the pressure applied by the elastic member 10 such as a disc spring when the insulating layer H is not provided is transmitted only to the ground surface, but is received by the insulating layer H. Since there is a function to be transmitted from the installation position of the material 7 to the natural ground below, there is an effect of increasing the shear strength of the surface layer of the natural ground.

  In the figure, reference numeral 41 denotes a mortar filled in the pressure receiving material 7.

  In addition, as shown in FIG. 18, if a half-broken joint portion 201 (such as a pin joint in the drawing) is provided at a midway required position (one or more locations) of the bearing member C, the surface of the natural ground Even if there are irregularities, the bearing member C can be along the surface of the natural ground.

Partially cutaway side view showing the first embodiment of the present invention Longitudinal enlarged front view showing the main part Plan view Expanded plan view Perspective view of bearing member Plan view with bearing members installed Expanded plan view Longitudinal enlarged front view showing the main part Longitudinal enlarged front view of bearing member Plan view of other bearing members Longitudinal front view The top view which shows 2nd Embodiment Longitudinal enlarged front view The top view which shows arrangement | positioning of the tension member of 3rd, 4th embodiment An enlarged plan view showing the main part of the above Same vertical enlarged front view Longitudinal front view showing the main part of the fifth embodiment An enlarged plan view showing another example of a supporting member

Explanation of symbols

A slope B mounting means C bearing member D pressure receiving member E tension member F tension member G expansion / contraction adjustment means H insulating layer 1 steel rod 2 hole 3 grout material 4 recessed portion 5 through hole 6 鍔 7 pressure receiving material 8 through hole 9 pressure receiving plate DESCRIPTION OF SYMBOLS 10 Elasticity imparting member 11 Washer 12 Nut 13 Through-hole 14 Disc 15 Nut 16 Screw hole 17 Through-hole 18 Bolt 19 Cap 20 Upper ring 21 Square pipe 22 Mounting bracket 23 Bar material 24 Groove 25 Brace material 26 Connection means 27 Steel plate 28 Washer 29 Dish plate 30 Through hole 31 Nut 35 Turnbuckle 36 Iron bar 37 Annular part 38 Bolt 41 Mortar 101 Fastening tool

Claims (6)

A steel rod fixed at a predetermined position on the slope, a bowl-shaped recessed portion provided on the slope around the steel rod, and the steel rod penetrated through the center through hole on the bottom surface and fitted into the recessed portion. A saddle-shaped pressure receiving material with a grounding bar, a pressure receiving plate that has been passed through the center through hole and dropped into the pressure receiving material, and is fitted on the steel rod and placed on the pressure receiving plate. An elastic member such as a disc spring, a nut that is screwed from the ground protruding end of the steel rod and compresses the elastic member, and is radially spread with a terminal attached to the ground protruding end side of each steel rod via an attachment means A slope stabilizer comprising the slope support member and a tension member connecting the front and rear and left and right attachment means. 2. The slope stabilizing device according to claim 1, wherein a pressure receiving member is provided to apply a pressure force by screwing a nut from a projecting end of the steel rod and to apply a vertical pressure to the ground to each supporting member. The slope stabilizing device according to claim 1, wherein the opposing tips of the bearing member are connected to each other through appropriate connecting means. The slope stabilizing device according to claim 1, wherein both ends of the tension member are obliquely connected to the left and right high-side mounting means and the low-side mounting means. A steel rod fixed at a predetermined position on the slope, a bowl-shaped recessed portion provided on the slope around the steel rod, and a grounding that is inserted into the recessed portion by passing the steel rod through the center through hole on the bottom surface A bowl-shaped pressure-receiving material with a brace, a pressure-receiving plate that has the steel rod penetrated through a central through hole and dropped into the pressure-receiving material, and a dish that is fitted on the steel rod and placed on the pressure-receiving plate An elastic force imparting member such as a spring, a nut that is screwed from the ground protruding end of the steel rod and compresses the elastic force imparting member, and a terminal is attached to the ground protruding end side of the steel rod via an attaching means and spreads radially. A slope stabilizing device comprising a tension member in which opposite ends are connected via expansion / contraction adjusting means. The slope stabilizing device according to claim 1 or 5, wherein an insulating layer is provided on a peripheral surface of the steel rod in a predetermined range in the ground from the lower side of the pressure receiving material.

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