JP2004332445A - Coupling device for reinforced banking - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coupling device for a reinforced banking, by which a coupling workability and the certainty of a coupling can be improved. <P>SOLUTION: In the device coupling a banking reinforcing material 50 and a slope protective material 40, the device is composed of band tools 20 forming a plurality of protruded sections 22a, which can be engaged by an abutting against the material 50, in a row shape while forming a front arm material 23, which can be coupled with the material 40, connecting pins 30 inserted into coupling grooves 22b formed inside the protruded sections 22a of the band tools 20 and a connecting pin 31 inserted into a coupling port 23a formed at the free end section of the front arm material 23 as a closing space. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a reinforced embankment connection device (hereinafter referred to as a "connection device") having excellent workability and connection strength.
[0002]
[Prior art]
A step of placing a slope protection material on the slope side, a step of connecting a net-shaped embankment reinforcing material on the back side of the slope protection material and laying it horizontally, and a step of embankment to the height of the slope protection material Is a cycle, and these steps are repeated to construct a bank body having a predetermined height.
In this reinforced embankment method, a connecting device for connecting one end of a net-shaped embankment reinforcing material to an arbitrary height of a slope protection material is known from Patent Document 1.
As shown in FIG. 8, the connecting device a is welded so as to intersect with the connecting member b arranged in parallel at intervals and to intersect with the longitudinal direction of the connecting member b, and has a uniform length from both long sides of the connecting member b. A plurality of front hooks c and rear hooks d are provided so as to protrude, and the front hook c is hooked on an upright portion constituting the slope protection material e, and the rear hook d is located near an end of the embankment reinforcing material f. It can be hooked and connected.
[0003]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2000-352065 (pages 3 to 5, FIGS. 1 to 4)
[0004]
[Problems to be solved by the invention]
The connection technique using the conventional connection device a has the following problems.
<B> Both the front hook c and the rear hook d of the connecting device a have their hooks formed by bending their free ends into hooks, so that when a large pulling force acts on the hooks, the hooks are opened by deformation. Connection may be disconnected.
In addition, a method of increasing the wire diameter of both hooks c and d to increase the deformation strength of the hook portion is conceivable, but this method still has a problem of an increase in cost and weight.
<B> Even if the hooks c and d are hooked on the slope protection material e and the embankment reinforcing material f, there is a problem that the hook is easily released if the connecting device a is shifted or the embankment reinforcing material f is turned up. .
<C> The main body of the connecting device a has a ladder shape, and the connecting device a does not easily bend in the lateral direction (the direction in which the upright portion of the slope protection material e passes through the upright portion).
For this reason, it is difficult to arrange the connecting device a following the curve when the retaining wall of the embankment is curved in any direction, inside or outside, so that a connecting device suitable for curve construction has been proposed. Is desired.
<D> In actual construction, the surface of the slope protection material e is covered with the curing sheet g to regulate outflow of earth and sand.
In this curing sheet g, the knitting yarns are arranged in a vertical direction, while the hooks of the front hooks c are horizontal in relation to the hooking operation on the slope protection material e.
Therefore, when the front hook c is hung on the slope protection material e, an operator has to push and spread the portion where the curing sheet g is to be penetrated by hand to assist the penetration of each front hook c. It takes a lot of effort and time.
[0005]
The present invention has been made in view of the above points, and an object of the present invention is to provide a reinforced embankment connection device that can improve connection operability and connection reliability.
[0006]
[Means for Solving the Problems]
The invention according to claim 1 is a connection device for reinforcing embankment for connecting between an embankment reinforcing material buried in an embankment and a slope protection material provided on a slope side of the embankment, wherein the embankment reinforcing material and A plurality of raised portions that can be abutted and locked are formed in a row, and a band formed with a forearm material that can be connected to the slope protection material, and a connecting groove formed inside the raised portion of the band. A connecting device for reinforcing embankment, comprising a connecting pin that can be inserted and a connecting pin that can be inserted into a connecting port formed as a closed space at a free end of a forearm member.
The invention according to claim 2 is the invention according to claim 1, wherein the band comprises a base material, a plurality of crosspieces arranged in a direction perpendicular to the base material, and a forearm member formed by projecting from the base material. A connecting device for reinforcing embankment, characterized in that a part of the material is bent in a mountain shape to form raised portions in a row.
The invention according to claim 3 is the reinforcing embankment according to claim 2, wherein both ends of the U-shaped bent forearm material are fixed to the base material, and a connection port is formed inside the forearm material. It is a connecting device.
In the invention according to claim 4, in claim 2, one of the bent ends of the forearm material is fixed to the base material, the other bent end of the forearm material is fixed to the forearm material, and the connection port is provided inside the forearm material. It is a connection device for reinforcing embankment characterized by being formed.
[0007]
Embodiment 1 of the present invention
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0008]
<A> Connecting device As shown in FIGS. 1 and 2, the connecting device 10 is a connecting tool for connecting between the slope protection material 40 and the embankment reinforcing material 50, and is connected to the band 20 and the band 20. And two connecting pins 30 and 31 to be used.
[0009]
<B> Band The band 20 is formed of a bar-shaped or plate-shaped base material 21 and a plurality of bar-shaped crosspieces 22 arranged at equal pitches in a direction orthogonal to the base material 21 and fixing their intersections. A plurality of forearm members 23 are arranged in a direction orthogonal to the member 21 and their intersections are fixed.
The base material 21 has a length substantially equal to the laying width of the slope protection material 40 or the embankment reinforcing material 50, and positions the crosspiece 22 and the forearm material 23 while maintaining a predetermined interval.
[0010]
The middle of each crosspiece 22 is bent in the same direction to form a mountain-shaped ridge 22a, and a connection groove 22b into which the connection pin 30 can be inserted is formed inside the ridge 22a.
The crosspiece 22 is a member that cooperates with the connecting pin 30 to connect between the band 20 and the net-like embankment reinforcing material 50 without using a hook. They are arranged at equal pitches at intervals corresponding to the mesh interval.
The formation width of the raised portion 22a is a dimension that can be inserted into the mesh of the embankment reinforcing material 50, and the raised height of the raised portion 22a is inserted into the mesh from one surface of the embankment reinforcing material 50 and protrudes from the other surface. Dimensions are set.
The combination of the crosspiece 22 having the raised portion 22a and the connection pin 30 as the connecting means with the embankment reinforcing material 50 is used to reliably prevent the opening such as a hook, This is to reduce the wire diameter of the connecting pin 30 to reduce cost and weight. Particularly, since the connecting pin 30 is a pin for restricting the embankment reinforcing material 50 from coming off from the band 20 due to the lifting, the design strength may be smaller than that of the other connecting pin 31.
[0011]
The forearm member 23 is a member for cooperating with the connecting pin 30 to be connected to the rising portion of the slope protection member 40 without using a hook. In this example, the bar is folded in a U-shape, and both ends are formed as bases. The case in which it is fixed to the material 21 is shown.
Inside the forearm members 23 arranged at appropriate intervals, elongated connecting holes 23a into which the connecting pins 31 can be inserted are formed.
The connection opening 23a is made a closed space by fixing both ends of the forearm member 23 to the base material 21 to reliably prevent opening like a hook and to reduce the wire diameter of the forearm member 23 to reduce cost. In addition, the tip of the forearm member 23 is formed in a round shape with a small bend width that allows the insertion of the connecting pin 31 because of the slope protection material 40 covered with the curing sheet 41. This is to reduce the penetration resistance to the upright portion and facilitate the work.
[0012]
<C> Connecting Pins Each connecting pin 30, 31 may be one having a length equal to the entire length of the band 20 in the long side direction, but each pin is divided into a plurality of pins and both sides of the band 20 May be inserted.
[0013]
[Action]
<a> A step of arranging the slope protection material 40 on the reinforcing embankment retaining wall side, a step of connecting and laying the embankment reinforcement material 50 on the back side of the slope protection material 40, The reinforcing embankment method of constructing the embankment of the predetermined height by repeating the step of embankment of the earth and sand 60 to the predetermined height is the same as before.
The slope protection material 40 includes a panel-shaped material as shown in FIG. 4 in addition to a material having an L-shaped cross section as shown in FIG. 3, and the material is also made of expanded metal, welded wire mesh or the like. The embankment reinforcing material 50 includes a known net or a sheet-like material having a large tensile strength such as a geotextile or a geogrid.
[0014]
<B> Connection operation In the present invention, the connection device 10 is used to connect between the upright portion of the slope protection material 40 and the embankment reinforcement 50 in the following manner.
[0015]
[Connection with slope protection material]
First, the forearm 23 side of the band 20 which is a component of the connecting device 10 is directed toward the slope protection material 40, and the raised portion 22a of the band 20 is placed on the ground with its upper surface facing upward.
Then, the plurality of forearm members 23 protruding from the band 20 are inserted into and penetrated by the upright portions of the slope protection material 40 covered with the curing sheet 41.
Since the distal end of the forearm 23 is formed to have a narrow width and the bending direction of the wire constituting the forearm 23 matches the vertical weaving direction of the curing sheet 41, only the pushing operation of the forearm 23 is performed. Thus, it is possible to penetrate the upright portion of the slope protection material 40, and it is not necessary to manually open the curing sheet 41 as in the related art.
One of the straps 20 is connected to the slope protection material 40 by inserting the connection pin 31 into the connection opening 22 a of each forearm member 23 that protrudes through the standing portion of the slope protection material 40.
[0016]
At the time of connection, if the forearm member 23 is made to protrude excessively from the slope protection material 40 and the connection groove 22a is formed to be horizontally long, the connection pin 31 can be inserted with sufficient margin, and the insertion of the connection pin 31 can be performed. If the belt 20 is pulled back to the back side of the slope protection material 40 at the time of completion, the amount of protrusion of the forearm member 23 from the slope protection material 40 can be minimized.
[0017]
Even when the retaining wall is curved, it is possible to simply insert the connecting pin 31 into each connecting groove 22a without bending the connecting pin 31 only by adjusting the amount of projection of the forearm member 23 according to the curvature of the curve.
[0018]
[Connection with embankment reinforcement]
Next, one end of the embankment reinforcing material 50 is put on the upper surface of the band 20, and the raised portion 22 a formed on the crosspiece 22 of the band 20 is projected through the mesh of the embankment reinforcing material 50.
The connecting pin 30 is inserted into the connecting groove 22b of the plurality of raised portions 22a protruding from the upper surface of the embankment reinforcing material 50, and the other of the band members 20 is connected to the embankment reinforcing material 50.
The connection between the slope protection member 40 and the embankment reinforcement member 50 is completed only by performing the above simple operations.
It is needless to say that the embankment reinforcing material 50 may be connected to the band 20 prior to the slope protection material 40.
[0019]
<C> Connecting operation During or after the construction, earth pressure acts on the slope protection material 40, and this force is supported by the embankment reinforcing material 50 via the coupling device 10.
The connection between the slope protection member 40 and the connecting device 10 is maintained by the connection pin 31 inserted into the forearm member 23 of the band 20 being locked to the front surface of the slope protection member 40.
In particular, even if a large tensile force is applied, the both ends of the forearm member 23 are fixed, so there is no fear of opening.
[0020]
The connection between the embankment reinforcing member 50 and the connecting device 10 is maintained by engaging the embankment reinforcing member 50 on one side surface of the raised portion 22 a formed in the group of the crosspieces 22 of the band 20. No tensile force acts directly on the connecting pin 30 inserted between the crosspieces 22 of the band 20.
[0021]
Also, at the beginning of the construction of the curve, even if the forearm member 23 protrudes excessively from the surface of the slope protection material 40, the earth pressure or the like continues to act as a tensile force with the passage of time, so that the connecting device 10 Due to the gradual deformation, the protrusion of the forearm member 23 becomes less noticeable.
[0022]
Embodiment 2 of the present invention
Hereinafter, other embodiments will be described. In the description, the same portions as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0023]
5 and 6 show another embodiment applied to a slope protection material 40a made of a concrete block having a non-mesh structure.
The slope protection material 40 a is formed by integrally forming a plurality of overhangs 43 on the back surface of a rectangular main body 42, and a plurality of through holes 44 are formed in a part of the overhang 43 in multiple stages.
The front surface shape of the main body 42 and the shape and the number of the overhang portions 43 of the slope protection material 40a are not limited to those shown in the drawings, but include various shapes.
[0024]
In the case of this example, the overhang portion of the slope protection material 40a is located such that the forearm member 23 of the band 20 is located on both sides or one side of each overhang portion 43 of the slope protection material 40a as shown in FIG. Only the setting of the arrangement interval of the forearm members 23 according to 43 is a structural difference from the first embodiment.
Further, at the time of construction, the forearm member 23 of the band 20 is positioned and connected to the through-hole 44 of an arbitrary height formed in the overhang portion 43 of the slope protection material 40a by the connection pin 31. The connecting means with the embankment reinforcing member 50 is as described above.
[0025]
In the present embodiment, the connecting device 10 can be used even when the slope protection material 40a is a non-mesh structure, and the connecting operation is simple as in the above-described first embodiment. There is an advantage that the connection does not come off once connected.
[0026]
Third Embodiment of the Invention
The number of rows of the raised portions 22a formed in the crosspiece 22 of the band 20 in the lateral direction is not limited to one row, and a plurality of rows may be formed at a predetermined distance.
In this case, the same number of connection pins 30 as the number of rows of the raised portions 22a are used.
With this configuration, the number of places where the embankment reinforcing member 50 and the band 20 are hooked increases, and the dispersibility with respect to the tensile force is improved, so that the connection strength can be increased.
[0027]
Although the case where the bent end of the forearm member 23 is fixed to the base material 21 has been described above, the bent end of the forearm member 23 is fixed to the forearm member 23 by welding or the like as shown in FIG. It may be formed in a circular or elliptical shape.
The connection port 23a may have a diameter substantially the same as the diameter of the connection pin 31, but it is preferable that the connection port 23a be formed larger than the diameter of the connection pin 31 in consideration of the insertability of the connection pin 31.
[0028]
【The invention's effect】
The present invention has the following specific effects.
<A> Inserting a connecting pin into the forearm material and connecting it to the slope protection material, and connecting the embankment reinforcing material with a simple operation just by inserting the connecting pin into the ridge protruding from the embankment reinforcing material, Connection operability can be improved.
<B> Since the connection port of the forearm member is a closed space, there is no possibility of opening the port like a hook, and the reliability of connection is improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a connecting device according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of a connecting device with a part omitted. FIG. 3 is an explanatory view of an example of a slope protection material. FIG. 5 is an explanatory view of a slope protecting material of a non-mesh structure. FIG. 6 is a plan view showing a connection device applied to the slope protecting material of FIG. 5. FIG. FIG. 8 is an explanatory view of a connecting device based on the present invention, wherein FIG. 8A is a perspective view of the connecting device with a part thereof omitted, and FIG. Explanation of code]
REFERENCE SIGNS LIST 10 connecting device 20 band 21 base material 22 crosspiece 22 a raised portion 22 b connecting groove 23 forearm material 23 a connecting port 30, 31 connecting pin 40 slope protection material 41 curing sheet 50 embankment reinforcing material

Claims (4)

A connection device for reinforcing embankment for connecting between an embankment reinforcing material buried in the embankment and a slope protection material installed on a slope side of the embankment,
A plurality of raised portions that can be locked by contacting the embankment reinforcing material in a row, and a band formed with a forearm material that can be connected to the slope protection material,
A connecting pin that can be inserted into a connecting groove formed inside the raised portion of the band,
A connection pin which can be inserted into a connection port formed as a closed space at a free end of the forearm material,
Connection device for reinforced embankment. In Claim 1, the band comprises a base material, a plurality of crosspieces arranged in a direction perpendicular to the base material, and a forearm member formed by projecting from the base material, and a part of the crosspiece is formed in a mountain shape. A connecting device for reinforcing embankment, characterized in that the raised portions are formed in a row by bending. 3. The connecting device for reinforcing embankment according to claim 2, wherein both ends of the U-shaped bent forearm material are fixed to the base material, and a connection port is formed inside the forearm material. 3. The method according to claim 2, wherein one of the bent ends of the forearm member is fixed to the base material, the other bent end of the forearm member is fixed to the forearm member, and a connection port is formed inside the forearm member. Connection device for reinforced embankment.

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