JP2001011865A - Connection member for slope reinforcement, filling reinforcing structure using it, and filling reinforcing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce work man-hours and a material cost by vertically piling up a slope reinforcing unit folding an expand metal or the like in the form of L-shape, inserting a lattice-like connection member in a connection part, and performing filling while performing rolling compaction. SOLUTION: The vertical side part and base part of a side view L-shaped slope reinforcing unit 2 are connected by a tension bar 4 to form a triangle, and strength for earth pressure or the like is improved. The slope reinforcing unit 2 is self-supported on ground, earth is layered on the inside into prescribed thickness, rolling compaction is performed by a vibration roller or the like, and the lowermost slope reinforcing unit 2 is installed. Then, only the opening part 2A of the upper end of the unit 2 is left to be layered. Next, an upper stage reinforcing unit 3 is piled up thereon, a lattice-like connection member 1 having a hook part 1c is inserted in both the opening parts 2A, 3A to be connected. In this state, earth is layered as well as a lower stage, and filling is constructed in the same method. Thereby filling can be efficiently constructed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting member of a slope reinforcing unit installed on an embankment slope to maintain the shape of the embankment, an embankment reinforcing structure using the same, and an embankment reinforcing method.

[0002]

2. Description of the Related Art Conventionally, various types of embankment reinforcing structures have been employed to prevent the embankment from collapsing. In particular, embankment reinforcement structures in which a slope reinforcement unit is arranged to maintain the shape of the slope have been employed in recent years, because they can integrate the stability of the embankment with greening and protection of the slope. That is, as shown in FIG. 6, the embankment is reinforced by a slope reinforcing unit 11 made of expanded metal or the like and an embankment reinforcing member 12 called a geogrid. The upper and lower slope reinforcing units 11 and 11 are connected by the embankment reinforcing members 12 and 12, respectively. , 11 are fixed and the slope reinforcing unit 11 and the embankment reinforcing member 12 are also fixed.

[0003]

However, in the case of the winding method, the embankment reinforcing member 12 must be laid in advance in consideration of the unwinding allowance at the time of construction. It requires a lot of man-hours, because it is necessary to raise the construction and construct it. In addition, the used amount of the slope reinforcing member 12 is wasted by the amount of rewinding, resulting in an economic loss. Furthermore, there is also a problem that, when open burning is performed, the rolled-up portion of the embankment reinforcing member 12 is burned, and the connecting force between the upper and lower slope reinforcing units 11 is damaged.

Accordingly, an object of the present invention is to provide a connecting member for a slope reinforcing unit which can reduce the number of construction steps and the amount of material used, an embankment reinforcing structure and an embankment reinforcing method using the same. It is assumed that.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its gist is to provide an opening at a lower end of a slope reinforcing unit as an upper stage and a slope reinforcement as a lower stage. It has a hook portion that can be inserted into both of the openings at the upper end of the unit, and a connection portion for the embankment reinforcing member buried in the embankment, and has a L-shaped side view between the hook portion and the connection portion. Made, and at least a hook portion relates to a connection member for a side surface reinforcing unit provided at a plurality of intervals at a distance matching the opening of the side surface reinforcement unit, preferably, the connection member is a vertical bar and a horizontal bar A vertical bar is bent upward at one end to form a hook portion, and the other end is bent into a chevron or semicircle to provide a connection member for a slope reinforcing unit. Things.

In addition, the above-mentioned connecting member, a slope reinforcing unit having an L-shape in side view, and a tension bar for connecting and reinforcing an L-shape vertical side portion and a bottom side of the slope reinforcing unit are provided. ,
According to an embankment reinforcement structure comprising a mesh-shaped embankment reinforcement member, the upper and lower slope reinforcement units are connected to each other by a hook portion of a connection member, and the embankment reinforcement member is attached to a connection portion of the connection member. Preferably, the slope reinforcing unit is formed by bending expanded metal so as to have an L-shape in a side view, and the slope reinforcing unit adjacent to the left and right has the L-shape. The present invention relates to an embankment reinforcing structure in which a coil-shaped connecting member is inserted and connected across the vertical side of the embankment.

Further, in the embankment reinforcing method using the above-mentioned connecting member, the earth and sand are piled inside the lower slope reinforcing unit as a lower stage, leaving an opening at an upper end, and then the upper slope reinforcing unit as an upper stage. The opening at the lower end of the lower side is installed inside the lower side slope reinforcement unit and the openings are aligned with each other. The present invention relates to an embankment reinforcement method for constructing an embankment by connecting the surface reinforcement units one after another to form a fill.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a connecting member connects upper and lower slope reinforcing units to each other and simultaneously connects an embankment reinforcing member. 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 for reinforcing the embankment itself, and is made of a net-like synthetic resin embedded in the embankment.

As the connecting member, for example, a vertical bar and a horizontal bar are formed in a lattice shape, and one end of the vertical bar is bent upward to form an L-shaped hook portion in side view. Then, the hook portion is inserted into the opening of the slope reinforcing unit and connected. 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 reinforcement unit, which is the upper stage, and the opening at the upper end of the slope reinforcement unit, which is the lower stage, are made to be one opening, and the hook of the connecting member is inclined at this opening. After inserting it (by lowering the substantial height of the L-shaped vertical side), if it is returned to its original state, the hook will not fall out of the opening, and the upper and lower slope reinforcement units will be connected. Because

The hook portion is not only bent up at one end of the vertical bar but also formed into an L-shape in side view by welding, rotatable connection, punching, etc. of another member and obliquely forming the whole. Alternatively, any device may be used as long as it can be inserted into the opening of the slope reinforcement unit by folding the L-shaped vertical side or the like. Also, a plurality of hooking portions are provided one-to-one with the opening pitch of the opening portions or in accordance with several intervals.

On the other hand, the other end of the connecting member serves as a connecting portion with the embankment reinforcing member. Although the shape of the connection portion depends on the shape of the embankment reinforcing member, for example, the other end of the vertical bar is bent into a mountain shape or a semicircle. And Yamagata (or semicircle)
Is inserted into the mesh of the embankment reinforcing member, and the connecting rod (round bar, pipe, square bar, etc.) is passed through the inside of the chevron and above the mesh, so that the embankment reinforcing member is connected so as not to come off. is there. In addition, it is not necessarily limited to a mountain shape or the like, and the connection portion may be folded to insert a mesh of the embankment reinforcing member.

Further, by using the connecting member of the present invention, an embankment reinforcing structure can be easily constructed. That is, the side surface reinforcement unit having an L-shape in side view is vertically connected as described above, and the embankment reinforcing member is connected, so that tension is applied between the L-shaped vertical side portion and the bottom side portion of the slope surface reinforcement unit. They are connected by bars. Here, the reason why the tension bar is used is that the slope side reinforcement unit forms a triangle in a side view as a whole by the tension bar, and is excellent in strength against earth pressure and the like.

Here, various net members can be used as the slope reinforcing unit. That is, welded wire mesh manufactured by performing plating or resin coating, etc.
It is a wire mesh such as a tortoise wire net, a rhombus wire net, other expanded metal, or various lattice members such as a grating formed by connecting the crossing portions of the wire in a twisted manner. It is preferable to use an L-shaped one. 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.

Further, although the slope reinforcing units are connected vertically and horizontally according to the scale of the embankment, it is also necessary to link the slope reinforcing units adjacent to the left and right. In this case, the connection can be easily performed using the coil-shaped connection member. That is, if the coil is rotated over the L-shaped vertical side of the adjacent slope-reinforcement unit, the coil is easily inserted and the connection is completed. However, it is not limited to the coil, and it is sufficient that the L-shaped vertical side portions can be bound together. For example, the L-shaped vertical side portion is fitted in the space of a spring material having a ω-shaped or σ-shaped cross section. It can also be connected by being inserted, sandwiched by a pair of U-shaped bodies that can be fitted together, fixed by a band, or sandwiched between openable and closable metal rings.

Depending on the mesh, it is possible to green the slope with 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. Further, it is preferable to install an embankment holding member made of a nonwoven fabric or the like inside the slope reinforcing unit.

Next, an embankment reinforcing method using the above-described connecting member will be described. First, the slope reinforcement unit is made to stand by itself using the L-shaped bottom of the slope reinforcement unit, and soil is laminated on the inside of the slope reinforcement unit approximately every 25 cm to 30 cm. 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.

Subsequently, the upper-side slope reinforcement unit is made 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 into the opening from the inside and hooked to connect the upper and lower slope reinforcing units. 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, stack the soil on the inside of the upper slope reinforcement unit and on the embankment reinforcement member,
A reinforced embankment is constructed by repeating the same method as above.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing 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 in a lattice shape, and bending one end of the vertical bar 1A upward to form a hook 1
C, and the other end is bent into a mountain shape to form a connection portion 1D. Therefore, the side view is L-shaped between the hook portion 1C and the connection portion 1D. The hook portion 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. .

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 present invention. In FIG. 2, first, the expanded metal is bent and the side view is L.
The slope-reinforcement unit 2 at the lower stage in the shape of a letter is made to stand on the ground 4 independently. 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.

Next, the embankment is buried inside the slope reinforcing unit 2 except for the opening 2A at the upper end (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 3 </ b> A of the slope reinforcing unit 3. Incidentally, the tension bar 5 is attached in the same manner as described above.

Subsequently, the connecting member 1 is tilted so that the hook portion 1C
Is made smaller than the opening width W of the openings 2A and 3A, and inserted as shown by the arrows. 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.

In FIG. 3, the connecting portion 1 of the connecting member 1 is shown.
One end of the embankment reinforcing member 6 is fixed to D via a connecting rod 7. 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 connecting member 1
The upper end of the hook portion 1C is in contact with the upper part of the opening 2A, and the slope reinforcing member 2 and the slope reinforcing member 3 are connected to the hook portion 1C.
C and the embankment are firmly fixed and connected (however, in FIG. 3, for convenience, the hook portion 1C, the slope reinforcing unit 2, and the slope reinforcing unit 3 are not brought into contact).

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 present invention. That is, as shown in FIGS. 4A and 4B, the connecting portion 1 </ b> D of the connecting member 1 is formed in a mountain shape, and the mesh 6 </ b> A of the embankment reinforcing member 6 is covered and fitted, and then the connecting rod 7 is fitted.
Insert and secure. 4 (A) and 4 (B), the connecting rods 7 are alternately skewed on the mesh 6A of the embankment reinforcing member 6, but are merely on the embankment reinforcing member 6 and have a chevron shape of the connecting portion 1D. It may just be inserted in between. Also, FIG.
(C) and (D) show another fixing state of the embankment reinforcing member 6, in which the connecting portion 1D is bent and the mesh 6A of the embankment reinforcing member 6 is hooked and fixed.

The slope reinforcing unit is manufactured by setting a metal round bar having a wire diameter of 6 mm at a predetermined position in addition to the expanded metal, welding the whole in a grid, and performing plating or resin coating. Welded wire mesh, 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 diameter of 4.0 mm or 3.2 mm.
It is also possible to use, for example, a turtle net with a mesh of 80 mm or 100 mm.

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 pattern can be used. Because the net-type sheet has a mesh structure, it is well compatible with soft ground and embankment,
Also, the upper and lower earth and sand can be mixed appropriately to exhibit a large frictional resistance. 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.

FIG. 5 is a perspective view showing an embankment reinforcing structure using the connecting member 1 of the present invention. Slope reinforcement unit
The expanded metal is bent so as to have an L-shape in side view, and the lower-side slope reinforcing unit 2 and the upper-side slope reinforcing unit 3 are connected by the method shown in FIGS. 2 and 3. (However, hook portion 1C of the connecting member
Are omitted for convenience). The side surface reinforcement units adjacent to each other on the left and right are connected by a coil-shaped connecting member 8. The left and right connecting portions 8A of the upper sloping reinforcement unit 3 are arranged in a staggered manner so as not to overlap with the connecting portion 8B of the lower tier.

[0027]

As described above, the connecting member for the slope reinforcing unit of the present invention can connect the upper and lower slope reinforcing units at one end and connect the embankment reinforcing member at the other end. Since the embankment reinforcing member does not need to be involved in the slope reinforcing unit, the number of construction steps can be reduced, and
Material usage can be reduced. 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 excellent in workability and productivity can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a connecting member for a slope reinforcing unit of the present invention.

FIG. 2 is a cross-sectional view showing a method of connecting upper and lower slope reinforcing units using the connecting member of the present invention.

FIG. 3 is a cross-sectional view showing a state in which upper and lower slope-reinforcing units are connected using the connecting member of the present invention.

FIG. 4 is a side view and a top view showing a state in which an embankment reinforcing member is connected to the connecting member of the present invention.

FIG. 5 is a perspective view showing an embankment reinforcing structure using the connecting member of the present invention.

FIG. 6 is a side view showing a connection state of upper and lower slope reinforcement units in a conventional method.

[Explanation of symbols]

 1 Connecting Member 1A Vertical Bar 1B Horizontal Bar 1C Hook 1D Connection 2 Lower Slope Reinforcement Unit 2A Opening 3 Upper Slope Reinforcement Unit Upper 3A Opening 4 Ground 5 Tension Bar 6 ‥ embankment reinforcing member 6A ‥ mesh 7 ‥ connecting rod 8 連結 coiled connecting member 8A, 8B ‥ connecting portion 11 ‥ slope reinforcing unit 12 ‥ embankment reinforcing member H ‥ substantial height of hook portion W ‥ opening width

Claims (6)

[Claims] 1. A member for interconnecting slope reinforcement units installed vertically on a slope of an embankment, the opening at the lower end of the slope reinforcement unit being an upper stage and the slope reinforcement being a lower stage. It has a hook portion that can be inserted into both of the openings at the upper end of the unit, and a connection portion for the embankment reinforcing member embedded in the embankment, and has a L-shaped side view between the hook portion and the connection portion. A connection member for a slope reinforcing unit, wherein a plurality of hook portions are provided at intervals corresponding to openings of the slope reinforcing unit. 2. The connecting member, wherein a vertical bar and a horizontal bar are formed in a lattice shape, and one end of the vertical bar is bent upward to form a hook portion, and the other end is formed into a chevron or semicircle. 2. A connection part which is bent.
4. The connecting member for a slope reinforcing unit according to item 1. 3. The connecting member according to claim 1 or 2, a side surface reinforcing unit having an L-shaped side view, and an L-shaped vertical side portion and a bottom side portion of the side surface reinforcing unit. The reinforcement bar is composed of a tension bar for reinforcement and a mesh-shaped embankment reinforcement member, and the upper and lower slope reinforcement units are connected to each other by a hook portion of the connection member, and the embankment reinforcement member is attached to the connection portion of the connection member. Embankment reinforcement structure characterized by the fact that: 4. The embankment reinforcement structure according to claim 3, wherein the slope reinforcing unit is formed by bending an expanded metal so as to have an L shape in a side view. 5. The side face reinforcing unit adjacent to the left and right sides is connected by inserting and connecting a coil-shaped connecting member across its L-shaped vertical side portion. The embankment reinforcement structure described. 6. An embankment reinforcing method using the connecting member according to claim 1 or 2, wherein earth and sand are piled up inside the lower side slope reinforcing unit, leaving an upper end opening. The opening at the lower end of the slope reinforcing unit to be installed is located inside the lower slope reinforcing unit at the lower stage, and the openings are aligned with each other, and then, the hooks of the connecting member are inserted into the two openings from the inside. By inserting and connecting the upper and lower slope reinforcement units,
An embankment reinforcement method characterized by constructing an embankment by stacking slope reinforcement units sequentially.