JP2004211426A - Connecting member for slope face reinforcing unit, banking reinforcing structure and banking reinforcing construction method using this connecting member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connecting member for a slope face reinforcing unit, a banking reinforcing structure and a banking reinforcing construction method using this connecting member for surely excluding the possibility of slipping-out of a banking reinforcing member with a simple structure. <P>SOLUTION: This connecting member 1 mutually connects slope face reinforcing units 2 and 3 arranged on a face of slope of banking and the banking reinforcing member 6 buried in the banking, and is composed of a hooking part 1C with the slope face reinforcing units 2 and 3, a connecting part 1D with the banking reinforcing member 6 and a body part 1E between the parts. The hooking part 1C is formed in the shape of extending in the upward direction of the slope face reinforcing units 2 and 3, and the connecting part 1D is formed in the shape of allowing the tip to reach up to the body part 1E by being folded back in the upward direction. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a connection member of a slope reinforcing unit installed on an embankment slope to maintain the shape of the embankment, an embankment reinforcement structure using the same, and an embankment reinforcement method.
[0002]
[Prior art]
Conventionally, various embankment reinforcement structures have been employed to prevent embankment collapse. In particular, an embankment reinforcement structure in which a slope reinforcement unit is arranged to maintain the shape of the slope has been adopted in recent years, since the stability of the embankment and the greening and protection of the slope can be integrated. That is, as shown in FIG. 5, the embankment is reinforced by a slope reinforcing unit 12 made of expanded metal or the like and an embankment reinforcing member 16 called geotextile. For connecting the slope reinforcing unit 12 and the embankment reinforcing member 16, a connecting member 11 as shown in FIG. 6 is used, and is fixed at a connecting portion 11 </ b> D bent in a mountain shape or a semicircle (for example, see Patent Reference 1).
[0003]
[Patent Document 1]
JP 2001-11865 A (page 4, FIG. 4)
[0004]
[Problems to be solved by the invention]
However, in the chevron connection part 11D shown in FIGS. 6A and 6B, the upper surface of the embankment reinforcement member 16 and the chevron inner surface of the connection part 11D are formed so that the embankment reinforcement member 16 does not come off. The connecting rod 17 must be inserted into the gap. On the other hand, in the semicircular connecting portion 11D shown in FIGS. 6C and 6D, the connecting rod is unnecessary, but when the embankment reinforcing member 16 is strongly pulled by the earth pressure or the like, the connecting portion 11D is There was a possibility that the semicircle opened and became linear, and the embankment reinforcing member 16 could easily come off.
[0005]
Therefore, the present invention provides a connecting member for a slope reinforcing unit that can reliably eliminate the possibility of the embankment reinforcing member coming out with a simple structure, an embankment reinforcing structure using the connecting member, and an embankment reinforcing method. It is the purpose.
[0006]
[Means for Solving the Problems]
The present invention has been made to solve the above problems, the gist of which is a hook portion with a slope reinforcing unit, a connecting portion with an embankment reinforcing member, and a main body portion therebetween, The hooking portion has a shape extending in the upward direction of the slope reinforcing unit, and the connecting portion has a shape in which the connecting portion is folded upward and has a tip reaching the main body portion. Preferably, one end of each of the plurality of vertical bars is bent into an L shape to form a hook portion, and the other ends are each bent into a circular shape to form a connection portion, and adjacent main body portions are fixed to each other by a horizontal bar. The present invention relates to a connecting member for a slope reinforcing unit.
[0007]
Also, the connection member, a slope reinforcing unit having an L-shape in side view, a tension bar for connecting and reinforcing an L-shaped vertical side portion and a bottom side portion of the slope reinforcing unit, and a mesh shape. The embankment reinforcing member according to the embankment reinforcing structure, wherein the body of the connecting member is inserted into the opening of the vertical side of the slope reinforcing unit, and the mesh of the embankment reinforcing member is inserted into the connecting portion of the connecting member. Preferably, the present invention relates to an embankment reinforcing structure in which a connecting portion of a connecting member is located inside a triangle formed by a slope reinforcing unit and a tension bar. A connecting rod may be inserted into a gap formed between the upper surface of the mesh of the embankment reinforcing member inserted into the connecting portion of the connecting member and the inner surface of the connecting portion.
[0008]
Furthermore, in the embankment reinforcement method using the above-described connecting member, after filling the earth and sand with the opening at the upper end left inside the lower slope reinforcement unit to be the lower stage, the lower end of the slope reinforcement unit to be the upper stage. The openings are installed inside the lower slope reinforcement unit, and the openings are aligned with each other. Subsequently, the hooks of the connecting member are inserted into both the openings from the inside, and the upper and lower slope reinforcement units are inserted. The present invention relates to an embankment reinforcing method for constructing an embankment by sequentially connecting slope-reinforcement units.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
In the present invention, the connecting member interconnects the slope reinforcing unit installed on the slope of the embankment and the embankment reinforcing member embedded in the embankment. Here, the slope reinforcing unit is installed on the slope of the embankment to maintain the shape of the embankment, and is connected vertically and horizontally to reinforce the embankment. The embankment reinforcing member is laid to reinforce the embankment itself, and is made of a net-like synthetic resin embedded in the embankment.
[0010]
As the connecting member, for example, one end of each of the plurality of vertical bars is bent into an L shape to form a hook. Further, the other ends are each bent upward in a circular shape so that the front ends reach the main body to form connection portions. Furthermore, the adjacent main body portions of the plurality of vertical bars are fixed to each other with a horizontal bar to form a set. The upper and lower slope reinforcing units are connected by inserting the hooks of the connecting members into the openings from the inside. That is, since the slope portion of the slope reinforcing unit is generally made of a net member, it has a plurality of openings including upper and lower ends. Therefore, the opening at the lower end of the slope reinforcing unit at the upper stage and the opening at the upper end of the slope reinforcing unit at the lower stage are matched to form one opening, and the hook of the connecting member is obliquely inserted into this opening. After inserting (reducing the substantial height of the L-shaped vertical side) and returning it to its original state, the hook will not fall out of the opening and the upper and lower slope reinforcement units will be connected. It is done.
[0011]
In addition, the hook portion not only bends one end of the vertical bar upward, but also has an L-shape in side view due to welding of another member, rotatable connection, punching, etc. Any shape may be used as long as it can be inserted into the opening of the slope reinforcing unit by folding or folding the vertical side of the character. Further, a plurality of hook portions are provided in one-to-one correspondence with the opening pitch of the opening portions or at intervals of several.
[0012]
On the other hand, the other end of the connecting member serves as a connection portion with the embankment reinforcing member. The shape of the connection portion is a shape (for example, a circular shape) that is folded upward and has a tip reaching the main body portion. Then, the mesh of the embankment reinforcing member is inserted into the connecting portion from above, and the mesh is hooked on the folded back end, so that the embankment reinforcing member is connected so as not to come off. Therefore, according to the connecting member of the present invention, when the embankment reinforcing member is strongly pulled by the earth pressure or the like, the pulling force acts in the direction in which the connection portion is folded back (in the case of a circular shape, the direction in which the diameter is reduced). Therefore, the folded portion of the connection portion does not open, and the possibility of the embankment reinforcing member falling out is reliably eliminated.
[0013]
Note that the folded back end may be hooked by the embankment reinforcing member, and does not necessarily have to be in contact with the main body. Also, in order to further secure the connection between the slope reinforcing unit and the embankment reinforcing member and prevent the embankment reinforcing member from coming off from above the connecting portion of the connecting member, the upper surface of the mesh of the embankment reinforcing member and the connecting portion are connected. The connecting rod can also be inserted into the gap formed between the inner surface of the connecting rod.
[0014]
In addition, by using the connecting member of the present invention, an embankment reinforcing structure can be easily constructed. That is, the slope reinforcing unit having an L-shape in side view is vertically connected as described above, and the embankment reinforcing member is connected, and tension is applied between the L-shaped vertical side portion and the bottom side portion of the slope reinforcing unit. They are connected by bars. Here, the reason why the tension bar is used is that the slope side reinforcing unit as a whole forms a triangle in a side view due to the tension bar, and is excellent in strength against earth pressure and the like. However, it is preferable that the connecting portion of the connecting member is located inside a triangle formed by the slope reinforcing unit and the tension bar. This is because interference between the connecting portion of the connecting member and the tension bar can be prevented without special measures.
[0015]
Here, various net members can be used as the slope reinforcing unit. In other words, welded metal nets manufactured by plating or resin coating, etc., turtle shell wire nets, rhombic wire nets, wire meshes such as expanded metal, etc. formed by connecting the intersections of wire rods in a twisted manner, or various types of gratings etc. Among the lattice members, among them, it is preferable to use an expanded metal that is bent to have an L shape in side view. This is because it is possible to easily stand alone and economically obtain a slope reinforcing unit excellent in strength. In this case, the opening into which the connecting member is inserted is a mesh located at the upper end or the lower end.
[0016]
Depending on the mesh, the slope can be greened by the slope reinforcing unit itself. However, when the mesh is large or when it is desired to green more quickly, a vegetation sheet may be provided inside. In this case, by making the vegetation sheet finer than the mesh of the slope reinforcing unit, stability of the embankment and greening and protection of the slope are integrated. In addition, it is preferable to install an embankment holding member made of a nonwoven fabric or the like inside the slope reinforcing unit.
[0017]
Next, an embankment reinforcing method using the above-described connecting member will be described. First, the slope reinforcing unit is made to stand by itself using the L-shaped bottom of the slope reinforcing unit, and soil is laminated approximately every 25 cm to 30 cm inside the slope reinforcing unit, and the soil is rolled by a vibrating roller or the like. The lower slope reinforcement unit will be installed. At this time, the soil is laminated while leaving only the opening at the upper end of the slope reinforcing unit.
[0018]
Subsequently, the upper-side slope reinforcement unit is allowed to stand on the laminated soil inside the lowermost slope-side reinforcement unit. At this time, the openings of the upper and lower slope reinforcement units are aligned. Then, the hook of the connecting member is inserted and hooked from the inside of the opening, and the upper and lower slope reinforcing units are connected. Thereafter, the embankment reinforcing member is fixed to the connection portion of the connecting member, and the embankment reinforcing member is pulled so that the hook portion of the connecting member does not loosen. Finally, the soil is laminated on the inside of the upper-side slope reinforcing unit and on the embankment reinforcing member, and the reinforced embankment is constructed by repeating the same method as described above.
[0019]
【Example】
Hereinafter, specific examples of preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an example of a connecting member for a slope reinforcing unit of the present invention. As shown in FIG. 1, the connecting member 1 is formed by welding a vertical bar 1A and a horizontal bar 1B so as to intersect with each other. One end of the vertical bar 1A is bent upward to form a hook portion 1C. The side view is L-shaped between the main body 1E. The hook 1C can be inserted into the opening of the slope reinforcing unit (not shown), and the interval between the vertical bars 1A is one-to-one corresponding to the opening of the slope reinforcing unit. . On the other hand, the other end of the vertical bar 1A is folded upward and its tip reaches the main body 1E to form a connecting portion 1D bent in a circular shape.
[0020]
FIGS. 2 and 3 are cross-sectional views showing a method of connecting the lower sloping unit 2 and the upper sloping unit 3 using the connecting member 1 of the embodiment shown in FIG. In FIG. 2, first, a lower-side slope reinforcing unit 2 in which an expanded metal is bent so as to have an L-shape in side view is self-supported on the ground 4. At the same time, the S-shaped tension bar 5 in side view is hooked between the L-shaped vertical side portion and the bottom side portion of the slope reinforcing unit 2 for reinforcement. It should be noted that three or four tension bars 5 are attached at intervals of 2 m in the width direction of the slope reinforcing unit 2.
[0021]
Next, the embankment is filled inside the slope reinforcing unit 2 while leaving the upper end opening 2A (for convenience, the embankment is not shown). After that, the slope reinforcing unit 3 is similarly made to stand on the embankment. At this time, the opening 2A of the slope reinforcing unit 2 and the opening 3A of the slope reinforcing unit 3 are matched. Note that the tension bar 5 is attached in the same manner as described above.
[0022]
Subsequently, the connecting member 1 is inclined so that the substantial height H of the hook portion 1C is lower than the opening width W of the openings 2A and 3A, and inserted as shown by the arrow. The state after insertion is as shown in FIG. That is, when the connecting member 1 is returned horizontally, the tip of the hook portion 1C is hooked on the openings 2A and 3A, and the slope reinforcing member 2 and the slope reinforcing member 3 are connected.
[0023]
In FIG. 3, one end of the embankment reinforcing member 6 is fixed to the connecting portion 1D of the connecting member 1. On the other hand, the other end of the embankment reinforcing member 6 is fixed on the embankment with an anchor (not shown). Therefore, the upper end of the hook 1C of the connecting member 1 comes into contact with the upper part of the opening 2A, and the slope reinforcing member 2 and the slope reinforcing member 3 are firmly fixed between the hook 1C and the embankment, They are connected (however, in FIG. 3, for convenience, the hook portion 1C, the slope reinforcing unit 2, and the slope reinforcing unit 3 are not abutted).
[0024]
FIG. 4 is a side view and a top view showing a state in which a mesh-like synthetic resin embankment reinforcing member 6 is fixed to the connecting member 1 of the embodiment shown in FIG. That is, as shown in FIGS. 4A and 4B, the mesh 6A of the embankment reinforcing member 6 is fitted over the connecting portion 1D of the connecting member 1 and fixed. Then, the mesh 6A is hooked on the distal end side of the circular connection portion 1D. In this state, when the embankment reinforcing member 6 is pulled by earth pressure or the like, a tensile force acts in a direction to reduce the diameter of the circular connection portion 1D. Therefore, the folded portion of the connection portion 1D does not open, and the embankment reinforcing member 6 does not come off. As shown in FIGS. 4C and 4D, the connecting rod 7 is inserted into a gap formed between the upper surface of the mesh 6A of the embankment reinforcing member 6 and the inner surface of the connecting portion 1D of the connecting member 1. The embankment reinforcing member 6 can also be prevented from falling off from above the connection portion 1D.
[0025]
In addition, as the slope reinforcement unit, in addition to the expanded metal, a metal round bar having a wire diameter of 6 mm is set at a predetermined position, the whole is welded in a grid shape, and a welding wire mesh manufactured by performing plating or resin coating. A diamond wire mesh having a wire diameter of 4.0 mm and a mesh of 100 mm (diagonal length in the horizontal direction is 160 mm), a wire mesh of a wire diameter of 4.0 mm or 3.2 mm, and a mesh of 80 mm or 100 mm may be used. it can.
[0026]
Further, as the embankment reinforcing member, a net-type sheet or the like coated with a special synthetic resin by combining polyester yarns in a lattice shape can be used. The net-type sheet has a mesh structure, so that it can be easily blended with soft ground or embankment, and can exhibit large frictional resistance by mixing the upper and lower earth and sand appropriately. Furthermore, since it has high strength, is lightweight and has weather resistance, it can save labor and cost, and is most suitable for embankment reinforcement work.
[0027]
【The invention's effect】
As described above, the connecting member for a slope reinforcing unit of the present invention includes a hook portion with the slope reinforcing unit, a connecting portion with the embankment reinforcing member, and a main body portion therebetween. The shape of the surface reinforcement unit extends in the upward direction, and the connection part is folded upward and the tip reaches the main body, making it possible to pull out the embankment reinforcement member with a simple structure. Can be reliably eliminated. In addition, by using the connecting member for a slope reinforcing unit of the present invention, an embankment reinforcing structure and an embankment reinforcing method which are simple in construction and particularly excellent in reliability can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a connecting member for a slope reinforcing unit of the present invention.
FIG. 2 is a sectional view showing a method of connecting upper and lower slope reinforcement units using the connecting member of the embodiment shown in FIG. 1;
FIG. 3 is a cross-sectional view showing a state where upper and lower slope reinforcing units are connected using the connecting member of the embodiment shown in FIG. 1;
FIG. 4 is a side view and a top view showing a state where an embankment reinforcing member is connected to the connecting member of the embodiment shown in FIG. 1;
FIG. 5 is a perspective view showing an example of an embankment reinforcing structure.
FIG. 6 is a perspective view showing a conventional connecting member for a slope reinforcing unit.
[Explanation of symbols]
1 {Connecting Member 1A} Vertical Bar 1B {Horizontal Bar 1C} Hook 1D {Connector 1E} Body 2} Lower Slope Reinforcing Unit 2A {Opening 3} Upper Slope Reinforcing Unit 3A {Opening 4} Ground 5 ‥ tension bar 6 ‥ embankment reinforcing member 6 A ‥ mesh 7 ‥ connecting rod 11 ‥ connecting member 11 D ‥ connecting portion 12 ‥ slope reinforcing unit 16 ‥ embankment reinforcing member 16 A ‥ mesh 17 ‥ connecting rod H 実 質 substantial height of hook portion W W opening width

Claims (6)

A connecting member (1) for interconnecting a slope reinforcing unit (2, 3) installed on a slope of an embankment and an embankment reinforcing member (6) embedded in the embankment, the slope being a slope. A hook portion (1C) with the reinforcing units (2, 3), a connection portion (1D) with the embankment reinforcing member (6), and a main body portion (1E) therebetween, and the hook portion (1C) The surface reinforcing unit (2, 3) has a shape extending upward, and the connecting portion (1D) is folded upward and has a shape whose tip reaches the main body portion (1E). Connecting member for slope reinforcement unit. One end of each of the plurality of vertical bars (1A) is bent into an L-shape to form a hook portion (1C), and the other ends are each bent into a circular shape to form a connection portion (1D), and adjacent main body portions (1E) are connected to each other. The connecting member for a side surface reinforcing unit according to claim 1, wherein is fixed by a horizontal bar (1B). The connecting member (1) according to claim 1 or 2, a side surface reinforcing unit (2, 3) having an L-shaped side view, and an L-shaped vertical side portion of the side surface reinforcing unit (2, 3). Bar (5) which connects and reinforces between the base and the bottom, and a mesh-like embankment reinforcing member (6), and has openings (2A, 3A) The embankment reinforcing structure wherein the main body (1E) of the connecting member is inserted into the connecting member, and the mesh (6A) of the embankment reinforcing member (6) is inserted into the connecting portion (1D) of the connecting member. The embankment reinforcing structure according to claim 3, wherein the connecting portion (1D) of the connecting member is located inside a triangle formed by the slope reinforcing units (2, 3) and the tension bar (5). . The connecting rod (7) is inserted into a gap formed between the upper surface of the mesh (6A) of the embankment reinforcing member (6) inserted into the connecting portion (1D) of the connecting member and the inner surface of the connecting portion (1D). The embankment reinforcing structure according to claim 3 or 4, wherein the embankment reinforcing structure is provided. An embankment reinforcing method using the connecting member (1) according to claim 1 or 2, wherein earth and sand are piled up inside a lower surface slope reinforcing unit (2), leaving an opening (2A) at an upper end. After that, the opening (3A) at the lower end of the upper side slope reinforcing unit (3) is aligned with the opening (2A, 3A) inside the lower side slope reinforcing unit (2). It installs, and subsequently, the hook part (1C) of the connection member (1) is inserted into both opening parts (2A, 3A) from the inside, and the upper and lower slope-reinforcement units (2, 3) are connected. An embankment reinforcement method characterized by constructing an embankment by stacking the slope reinforcement units (2, 3).

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