JP2002339364A - Banking reinforcing member and method for forming slope face by using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a banking reinforcing member, by which reinforcing works in the case of the execution of works are made unnecessary by imparting sufficient strength, banking can be compacted sufficiently and there is not accident of the runoff of banking or the like. SOLUTION: The banking reinforcing member is composed of a latticed structure 3 in which a wire gauze in which the intersecting points of a plurality of longitudinal metallic wires 1 and a plurality of lateral metallic wires 2 are welded is bent at an acute angle from a right angle in the vicinity of a center, L-shaped metal fittings 5 fast stuck on the inside of the latticed structure 3 and fasteners fixing the L-shaped metal fittings 5 by pinching both the metal fittings 5 and the longitudinal metallic wires 1 of the structure 3 and having a locking mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embankment reinforcing member made of a metal wire mesh used for constructing an embankment retaining wall and the like, and a slope forming method using the same.

[0002]

2. Description of the Related Art Conventionally, embankment reinforcing members have been used in places where embankments such as road construction and slope formation in mountainous areas and road maintenance in urban areas occur, in order to prevent collapse of the embankment surfaces.

As shown in FIG. 5, a conventional embankment reinforcing member is formed by bending a rectangular wire mesh from a central portion to a substantially right angle from a right angle in accordance with a slope of a slope so as to be substantially L-shaped when viewed from the side. In other words, a wire mesh portion bent upward on the surface side of the slope by embankment was used to support the embankment inside.

[0004] As a method of forming a slope using an embankment reinforcing member, earth is scattered after connecting the embankment reinforcing member and a sheet-like synthetic resin net, and the first embankment is completed by rolling with a machine. The embankment reinforcing member and the synthetic resin net are similarly connected on the first embankment, and the embankment is completed in the same manner as the first embankment to complete the second embankment. To complete the slope by embankment.

[0005] The wire mesh 2 used as the embankment reinforcing member
In general, a steel wire 1 is generally formed by assembling a plurality of steel wires vertically and horizontally to form a lattice structure, and intersections thereof are formed into a wire mesh by welding spots or the like.

[0006] Incidentally, the embankment reinforcing member must withstand the embankment pressure and maintain the slope, and high strength is required. However, the wire mesh formed by assembling the steel wires in a grid and welding the intersections is light. On the other hand, wire mesh 2
The required strength is secured by connecting a bar-shaped bellows member (not shown) extending in the lateral direction to the slope forming portion 1.

In addition, a grid-like structure (for example, expanded metal) in which a wire mesh is integrally formed is used as the wire mesh of the embankment reinforcing member instead of the wire mesh where the intersections of the steel wires are welded, and the required strength can be obtained without using a belly material. There was a way to secure it.

[0008]

However, an embankment reinforcing member using expanded metal has a drawback that it is heavy and requires several people to carry it, and it takes time and effort to perform the construction on site.

On the other hand, a wire mesh 2 in which the intersections of ordinary steel wires are welded.
As described above, in the case of using No. 1, it is necessary to use a bellows material which is a separate member at the time of construction, and there are the following problems in addition to the problem that it takes time and effort.

In other words, in order to maintain the angle of the wire mesh 21 of the embankment reinforcing member at the time of construction, reinforcing bars 22 connecting both ends of the wire mesh from the back side are attached at appropriate intervals as shown in FIG. Reinforcing bars 22 hinder the embankment at the time of embankment, and sufficient compaction work of the embankment cannot be performed at the lower part of the reinforcing rebars 22. As a result, the embankment is insufficiently compacted. Was causing the accident.

On the other hand, if the compaction of the embankment is sufficiently performed in order to eliminate the accident such as the outflow of the embankment, the reinforcing steel bar 22 is bent inward due to the earth pressure at the compaction, and as a result, the wire mesh 21 of the embankment reinforcing member is formed. There was a problem that the angle of the embankment reinforcing member dragged inward and aligned with the slope changed, and the formed slope became uneven.

The present invention solves the above-mentioned problems,
By providing sufficient strength, reinforcement work at the time of construction is unnecessary, and furthermore, the embankment can be sufficiently compacted and an embankment reinforcing member that does not cause an accident such as embankment outflow and use it. An object of the present invention is to provide a method for forming a slope.

[0013]

According to a first aspect of the present invention, an intersection of a lattice-like structure composed of a plurality of vertical metal wires and a plurality of horizontal metal wires is joined by welding. A wire mesh having a structure in which a part of the intersection is sandwiched between two horizontal metal wires before and after a vertical metal wire, a grid-like structure bent from a right angle to an acute angle near the center, and a grid-like structure 1 or 2 or more having an L-shape such that it is in close contact with the lattice-like structure on the inner side forming an acute angle from a right angle, and having a thickness in the front-rear direction equal to or greater than the width of the surface in close contact with the lattice-like structure The L-shaped bracket, the vertical metal wire of the lattice-shaped structure, and the L-shaped bracket can be interposed between the L-shaped bracket so that the L-shaped bracket can be fixed at any place of the lattice-shaped structure, and has a retaining mechanism. It is an embankment reinforcing member consisting of a fastener.

According to a second aspect of the present invention, there is provided the embankment reinforcing member according to the first aspect of the present invention, wherein the vertical metal wire at the lower portion of the lattice structure forms a convex portion bent upward.

According to a third aspect of the present invention, an intersection of a lattice-like structure composed of a plurality of vertical metal wires and a plurality of horizontal metal wires is joined by welding, and a part of the intersection extends before and after the vertical metal wire. A wire mesh with a structure in which two horizontal metal wires are sandwiched, a grid-like structure that is bent from a right angle to an acute angle near the center is placed at the slope formation site of the embankment, and the acute angle from the right angle of the grid-like structure is changed. One or two or more L-shaped fittings having an L-shape such that they are in close contact with the lattice-like structure on the inner side thereof and having a thickness in the front-rear direction equal to or greater than the width of the surface in close contact with the lattice-like structure. The L-shaped fitting can be fixed at any place of the lattice-shaped structure by sandwiching both the vertical metal wire of the lattice-shaped structure and the L-shaped fitting, and a fastener having a retaining mechanism is provided. The embankment reinforcement member is fixed and fixed near the lower end of the embankment reinforcement member. After fixing the resin net, the earth and sand is scattered on the synthetic resin net up to the upper end of the embankment reinforcing member, and the embankment is compacted by compaction. Fixing the metal fittings, fixing the synthetic resin net, and embankment by the same means,
This is a slope forming method of forming a slope by embankment by repeating this.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described.
This will be described with reference to the accompanying drawings.

FIGS. 1 and 2 show an embankment reinforcing member according to the first or second aspect of the present invention, the main parts of which are a plurality of vertical metal wires 1 extending in a vertical direction and a plurality of vertical metal wires 1 extending in a horizontal direction. A grid formed by bending a horizontal metal wire 2 by welding such as spot welding or the like to form an integral metal wire mesh, which is bent from a right angle to an acute angle in the vicinity of the center in accordance with the angle of the slope. Structure 3.

The wire diameter of the metal wires 1 and 2 constituting the lattice structure 3 is about φ4 to φ8, and any material having excellent durability may be used as the material of the metal wire. Preferably, a metal wire obtained by subjecting a steel wire to zinc plating, an alloy plated wire, or the like is used.

Further, the tensile and compressive strength of the lattice structure 3
Or, in order to increase the bending strength, at a part of the intersection of the vertical metal wire 1 and the horizontal metal wire 2, two horizontal metal wires 2
Has a so-called double bar welding (commonly called W bar welding) structure in which the vertical metal wires 1 are arranged so as to be sandwiched between the front and rear and welded by electric welding.

Since the strength of these double stitch welds is twice or more than that of a normal weld, the strength efficiency is high in terms of material, and the welding is performed in less than half of the entire area without using all the welds. The required improvement in strength can be obtained by itself.

The vertical metal wires 1 joined as described above
And a metal wire mesh formed of the horizontal metal wires 2 is bent at an acute angle (90 degrees to 60 degrees) in the vicinity of the center by a press or the like to complete the lattice structure 3.

In FIG. 1, the horizontal metal wire 2 other than the double streak welded portion is arranged outside the vertical metal wire 1, but the present invention is not limited to this arrangement. May be arranged inside the vertical metal wire 1.

The size of the lattice-shaped structure 3 is not particularly limited, but the height and the depth are about 300 to 1000 mm, and the width is not particularly limited, but is relatively long, several m to several tens m. Is preferred.

In the vicinity of the lower edge of the lattice-shaped structure 3, a convex portion 4 is formed by bending the vertical metal wire 1 upward to fix the synthetic resin net. It is formed at a position aligned in the horizontal direction with respect to all the vertical metal wires 1.

The connection between the lattice-like structure and the synthetic resin net may be any method as long as it can be fixed properly, for example, by entanglement of the synthetic resin net around the end of the lattice-like structure having no projections. Any method such as a method of fixing with a rod-like object may be used, but it is preferable to use the lattice-like structure 3 having the projections 4 formed as shown in the figure, so that the construction is easy.
Can be fixed quickly.

The L-shaped fitting 5 is for tightly fixing and reinforcing the lattice-shaped structure 3, and the angle of the L-shaped metal fitting 5 is set so as to be tightly attached to the inside of the lattice-shaped structure 3 at an acute angle from a right angle.
The angle at which the lattice-like structure 3 is formed is set to be the same, and the size thereof is set to be slightly shorter than the height and the depth of the lattice-like structure.

The L-shaped fitting 5 has a length in the depth direction which is equal to or greater than the length in the lateral direction of the contact surface with the lattice structure 3.

That is, since the L-shaped fitting 5 has a width in the front-rear direction that is larger than the width of the contact surface with the lattice-shaped structure 3, the L-shaped fitting 5 receives the embankment pressure applied substantially vertically to the slope surface. Increases resistance.

In the area where the pressure of the embankment increases,
In order to protect the embankment reinforcing member, the L-shaped metal reinforcing bar 6 may be used for some of the L-shaped metal fittings 5, but the length is kept to a minimum length so that the embankment can be sufficiently compacted.

An L-shaped bracket reinforcing bar 6 of the size shown in FIG.
As long as it is used at the base of the sharply bent portion of the L-shaped bracket 5, even when the embankment is sufficiently compacted during construction, the L-shaped bracket reinforcing steel bar 6 hinders the compaction of the soil. Also, the L-shaped metal reinforcing bar 6 does not bend inward and draw the lattice-like structure 3 inward.

FIG. 3A shows a fastener for tightly fixing the L-shaped fitting 5 to the lattice-shaped structure 3.
The fastener includes a U-shaped fastener 7 and a locking tool 8 that engages with the U-shaped fastener 7.

The U-shaped fastener 7 is formed by bending a rectangular metal plate in the vicinity of the center to form a U-shape. At both end portions, engagement pieces 9 which are raised at an angle inside are formed. Is provided.

The U-shaped fastener 7 is formed as shown in FIG.
As shown in the fixed state diagram of the L-shaped bracket 5, its width is equal to the width of the L-shaped bracket 5 and its length is about 5 to 6 cm. 3
Is larger than the sum of the thickness of the intersection of the vertical metal wire 1 and the horizontal metal wire 2, and the engaging piece 9 is provided at a position where its end does not exactly overlap with the L-shaped bracket 5 at the time of mounting. Keep it.

The locking member 8 is formed by bending a rectangular metal plate in the vicinity of the center to form a U-shape. On both sides thereof, there are provided curved portions 10 which are curved inward. The curved portion 10 is configured to fit into the portion where the engaging piece 9 of the U-shaped fastener 7 rises inward, and press the engaging piece 9 inward.

According to the fastener having the above-described structure, the L-shaped fitting 5 can be easily attached to the portion where the vertical metal wire 1 exists, so that the L-shaped fitting 5 can be attached to an arbitrary position of the lattice-shaped structure 3. Any number can be attached, and it is possible to easily cope with the required increase in strength of the embankment reinforcing member.

The fastener of the present invention is not limited to the combination of the U-shaped fastener 7 and the fastener 8, but may be of various shapes as long as it has a retaining mechanism. However, as long as it can be attached and stopped with one touch as in this embodiment, the work efficiency is good and the construction labor is reduced.

Next, a method for forming a slope according to the third aspect of the present invention, which is performed using the embankment reinforcing member according to the first or second aspect of the present invention, will be described.

First, one or a plurality of the lattice-like structures 3 are arranged as necessary at the bottom of the portion where the slope is formed by embankment so as to match the length of the slope.

Next, the L-shaped fitting 5 is attached to an arbitrary place of the lattice-like structure 3 by using a fastener consisting of a U-shaped fastener and a fastener 8. , L
In a state where the metal fitting 5 is in close contact with the vertical metal wire 1 of the lattice-shaped structure 3, the U-shaped fastener 7 is attached to the vertical metal wire 1 and the L-shaped metal fitting 5 from the front side (or lower side) of the slope. It is only necessary to insert the external fitting so as to sandwich it, and to externally insert the locking tool 8 to the U-shaped metal fitting 7 from the back side (or upper side) of the slope, and the mounting operation can be performed smoothly and quickly.

In the mounted state, as shown in FIG. 3B, the L-shaped metal fitting 5 is pressed against the vertical metal wire 1 by the engagement piece 9 of the U-shaped metal fitting 7, and is further locked. It is anticipated that the curved portion 10 of the fitting 8 is fitted with the engagement piece 9 of the U-shaped fastener 7 pushed in inside, and the L-shaped fitting 5 is separated from the lattice structure 3 (vertical metal wire 1). Even if an external strong force is applied, the engagement pieces 9 are not disengaged and the two are closely fixed.

The number and location of the L-shaped fittings 5 are as follows.
It can be arbitrarily determined according to the portion where the embankment reinforcing member is used. In a portion where the earth pressure is large, such as the embankment constituting the lower step, the reinforcement is strengthened by using more L-shaped fittings 5 than in other portions. On the other hand, in a part where the earth pressure is relatively small, such as the embankment of the upper stage, the L-shaped metal fitting 5 can be reduced to reduce the cost.

Next, a synthetic resin net 11 shown in FIG. 4 is attached to the convex portion 4 formed by bending the vertical metal wire 1 formed at the lower portion of the embankment reinforcing member upward. Double fold or cover the end as it is,
The projections 4 are projected upward from between the nets of the synthetic resin net 11.

With the protruding portions 4 of the vertical metal wires 1 protruding from between the nets of the synthetic resin net 11, a relatively durable rod-like object such as a single metal bar is moved from the horizontal direction to all protruding portions. The lower part of the lattice structure 3 and the synthetic resin net 11 are fixed by passing the lower part of the vertical metal wire 1 in the part 4 and the upper side of the synthetic resin net 11.

Next, the embankment 12 is placed on the synthetic resin net 11.
, But the amount of the embankment 12 is an amount until reaching the upper end of the lattice-shaped structure 3 of the embankment reinforcing member.

Thereafter, the embankment 12 is compacted by applying pressure downward by a mechanical rolling operation.
Is in close contact with the lattice-shaped structure 3 and does not hinder the work of solidifying the embankment 12, and the angle of the lattice-shaped structure 3 does not change due to the pressure for compacting the soil.
2, sufficient rolling work can be performed.

After the first-stage embankment 12 is completed by the above-described means, a lattice-like structure is formed on the first-stage embankment 12 by the same means as that used to form the first-stage embankment. Thing 3
, And fix the L-shaped bracket 5 to the synthetic resin net 1.
1 is fixed, and further, the embankment 12 is charged and the embankment 12 is hardened to form the second-stage embankment 12.

Further, an embankment is formed on the second-stage embankment 12 by the same means, and by repeating this,
As shown in FIG. 4, a slope by a plurality of embankments 12 can be formed.

Although the required strength of the embankment reinforcing member changes depending on the height (earth pressure) of the embankment surface, the number of L-shaped fittings 5 that can be attached to an arbitrary position of the lattice structure 3 is adjusted or L
By using the reinforcing metal reinforcing bar 6 or the like, for example, the total weight (earth pressure) of the embankment to be supported becomes lighter in the upper row, so that the number of the L-shaped metal fittings 5 can be reduced or the L-shaped reinforcing steel reinforcing bar 6 can be used.
The strength can be changed by omitting the use of the L-shaped metal fittings 5 and the use of the L-shaped metal fittings 5 and the reinforcing steel reinforcing bars 6 can be reduced, and the cost can be reduced.

It should be noted that the present invention is not limited to the shapes and dimensions in the above-described embodiment, but includes embodiments which are appropriately changed according to the size and shape of the construction slope and other various conditions.

[0050]

As described above, according to the embankment reinforcing member of the first aspect of the present invention, two horizontal metal wires sandwich the vertical metal wire at a part of the intersection of the lattice structure. , And L
Since the metal fitting has a thickness in the front-rear direction equal to or greater than the width of the surface in close contact with the lattice-shaped structure, sufficient strength against the embankment eliminates the need for reinforcement work during construction, and furthermore, L
Since the V-shaped metal fitting is in close contact with the inside of the lattice-shaped structure, the compaction work can be performed sufficiently without being hindered by the compaction of the embankment, and an accident such as outflow of the embankment does not occur.

Further, the L-shaped metal fitting for reinforcement can be attached to an arbitrary position of the lattice-like structure by using the fastener, and can easily cope with the required increase in strength of the embankment reinforcing member. it can.

According to the embankment reinforcing member of the second aspect of the present invention, at the time of connection of the synthetic resin net, all the protrusions of the vertical metal wire are projected from between the nets of the net. By passing one rod-shaped object from the lateral direction between the vertical metal wire and the synthetic resin net, the lower part of the lattice structure and the synthetic resin net can be quickly fixed.

According to the method of forming a slope according to the third aspect of the present invention, by using the embankment reinforcing member of the first aspect of the present invention,
Since the attachment of the L-shaped fitting to the embankment reinforcing member can be easily performed by the fasteners, the construction time can be shortened, the number of workers can be reduced, the cost can be reduced, and sufficient embankment can be input and compaction by compaction can be performed. Therefore, accidents such as embankment runoff do not occur.

[Brief description of the drawings]

FIG. 1 is a side view of an embankment reinforcing member of the present invention.

FIG. 2 is a perspective view of an embankment reinforcing member of the present invention.

FIG. 3A is a perspective view of a fastener, and FIG. 3B is a plan view showing an attached state of an L-shaped bracket by the fastener.

FIG. 4 is a side sectional view of a slope by the embankment reinforcing member of the present invention.

FIG. 5 is a side view showing a conventional reinforcing member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vertical metal wire 2 Horizontal metal wire 3 Lattice structure 4 Convex part 5 L-shaped metal fitting 6 L-shaped metal fitting reinforcement reinforcing bar 7 U-shaped clasp 8 Locking tool 9 Engaging piece 10 Curved section 11 Synthetic resin net 12 Embankment 21 Wire mesh 22 Reinforcing steel

Claims (3)

[Claims] 1. An intersection of a lattice-like structure composed of a plurality of vertical metal wires and a plurality of horizontal metal wires is joined by welding, and a part of the intersection is two horizontal metal wires before and after the vertical metal wire. A wire mesh having a structure sandwiched between the grid-like structure, which is bent from a right angle to an acute angle in the vicinity of the center; One or two or more L-shaped fittings having a thickness in the front-rear direction equal to or greater than the width of the surface in close contact with the lattice-shaped structure, and both the vertical metal wire and the L-shaped fitting of the lattice-shaped structure An embankment reinforcing member comprising an L-shaped metal fitting that can be fixed at an arbitrary position of the lattice-shaped structure by sandwiching the metal element, and a fastener having a retaining mechanism. 2. The embankment reinforcing member according to claim 1, wherein a vertical metal wire at a lower portion of the lattice structure forms a convex portion bent upward. 3. An intersection of a lattice-like structure composed of a plurality of vertical metal wires and a plurality of horizontal metal wires is joined by welding, and a part of the intersection is two horizontal metal wires before and after the vertical metal wire. Arrange a grid-like structure in which a wire mesh sandwiched is bent from a right angle to an acute angle in the vicinity of the center at the place where the slope of the embankment is formed. One or two or more L-shaped fittings having an L-shaped shape that is in close contact with the object and having a thickness in the front-rear direction equal to or greater than the width of the surface that is in close contact with the lattice-like structure are vertically aligned with the lattice-like structure. The L-shaped fitting can be fixed at any place of the lattice-like structure by sandwiching both the metal wire and the L-shaped fitting, and the embankment reinforcing member is fixed by a fastener having a retaining mechanism. And fix a synthetic resin net near the lower end of the embankment reinforcing member. After that, the earth and sand is sprinkled on the synthetic resin net to the upper end of the embankment reinforcing member, and the embankment is compacted by compaction. Then, on the embankment, the lattice-like structure is arranged, the L-shaped metal fitting is fixed, and the synthetic resin is fixed. A slope forming method characterized in that the net making is fixed and the embankment is performed by the same means, and this is repeated to form a slope by the embankment.