JP2898512B2 - Slope protection method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slope protection method for an inclined road facing an expressway or various facilities constructed by an open-cut method or a steep slope which may collapse.

[0002]

2. Description of the Related Art As shown in FIG. 8, a conventional slope protection method employs a formwork comprising a pair of left and right side plates 1, 1 and a connecting frame 2 connecting the both side plates 1, 1. As shown in FIG. .

The material of the pair of left and right side plates 1, 1 is a hard plastic plate, a thick plate, a metal lath, a crimped wire mesh, or the like.

The connecting frame 2 has two vertical bars 4 made of the same material disposed at appropriate intervals between two upper and lower horizontal bars 3 made of thin steel bars. Are joined by means such as welding.

[0005] When the side plate 1 is a wire mesh, both ends of each side bar 3 are formed into a ring-shaped bent portion 5 when the side plate 1 is a wire mesh.
The bent portion 5 is rotatably engaged with a vertical or horizontal wire rod of the wire mesh.

[0006] In addition to the above, a method of dropping a retaining member from above into a bent portion of both ends of a horizontal bar penetrating through the side plate may be adopted.

[0007] The protection method using the above-configured formwork is as follows.
After arranging the two lower main reinforcing bars 6, 6 at the formwork setting location on the site, the left and right side plates 1, 1 are outside the lower main reinforcing bars 6, 6 from above, and the lower horizontal bar 3 and the vertical bar The formwork is installed so that the portion intersecting with 4 is located outside the lower main reinforcing bars 6, 6.

Next, the lower main reinforcing bars 6 and 6 are tied together at the intersections of the lower horizontal bar 3 and the vertical bar 4 using the tie wires 7.

After that, the upper main reinforcing bars 8 are arranged on the horizontal bar 3 at the intersection of the upper horizontal bar 3 and the vertical bar 4, and the binding wires 7 are formed.
To unite.

Thereafter, mortar or concrete is poured into the formwork.

[0011]

When the above-described protection method is adopted, first, the lower main reinforcing bar is arranged, and then, when the form is arranged, the lower main reinforcing bar is disposed outside the lower main reinforcing bar when the form is arranged. Since it is necessary to arrange the vertical bars, that is, to make the lower main rebar fit between the two vertical bars, it takes a lot of trouble,
When the lower main reinforcing bar does not fit inside the vertical bar, there was a problem that the formwork had to be lifted to correct the arrangement position of the lower main reinforcing bar.

Also, when the lower main reinforcing bar is bound, the lower main reinforcing bar is lifted upward, so that there is a problem that the binding operation is extremely troublesome.

SUMMARY OF THE INVENTION It is an object of the present invention to arrange a main reinforcing bar very easily and to work efficiently.

[0014]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is to dispose a pair of left and right side plates in parallel at a predetermined interval in front and rear, and And a connecting frame having both sides attached to the lower part by appropriate means and a connecting frame opened between both sides of the upper surface is arranged at a predetermined position on the slope, and then each of the U-shaped lower stirrups is appropriately attached to the connecting frame. Then, the lower main rebar is dropped into the lower stirrup from the upper surface opening of the connection frame and arranged, and is fixed to the lower stirrup by an appropriate method. After engaging both ends of the width regulating member with the upper ends on both sides of the lower stirrup or the upper ends on both sides of the connecting frame, the upper main rebar is placed on the width regulating member and arranged, and fixed by an appropriate method. Followed by a U-shaped upper stirrup With arranging crowded dropped, then fixed with an appropriate method, employing a protection method of slope, characterized in that it has Da設 mortar or concrete to the mold.

[0015]

The lower main reinforcing bar is dropped into the connecting frame by using the opening on the upper surface and arranged.

After the lower main reinforcing bars are arranged, both ends of the width regulating member are engaged with the upper portions on both sides of the connection frame, and the upper main reinforcing bars are arranged and placed on the width regulating member.

Further, the lower stirrup is attached to the connecting frame by an appropriate method, the lower main reinforcing bar is dropped into the connecting frame from the upper opening, and the lower main reinforcing bar is arranged in the lower stirrup.

After the lower main reinforcing bars are arranged, the upper ends of the width regulating members are engaged with the upper ends on both sides of the connection frame or both upper ends of the lower stirrup, and the upper main reinforcing bars are placed on the width regulating members.
Arrange the bars, and then drop the upper stirrup and place it.

[0019]

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

A shown in FIGS. 1 and 2 is a mold.

The above-mentioned formwork A includes a pair of left and right side plates 21 and 2.
1 and a connection frame 22 arranged side by side at predetermined intervals in the front and back, and both sides of which are attached to the upper and lower sides of both side plates 21, 21 and which are open between both sides of the upper surface. .

In the case shown in the drawing, the connecting frame 22 has a horizontal connecting rod 23 having both ends attached to both side plates 21, and is located just above both ends of the connecting rod 23 and attached to the side plates 21, 21. A horizontal rod 24 having an end of the orientation,
A vertical rod 25 whose upper and lower ends are fixed to the middle of the connecting rod 23 and the end of the connecting rod 23 by welding or the like. The upper end of the connecting frame 12 is opened (opened) between the inward ends of both horizontal rods 24.

B is a width regulating member that locks both ends on the upper part of the vertical rod 25 on both sides.

As shown in FIG. 3, the width regulating member B has a band iron 26 and a light transmitting member 27 through which a vertical rod 25 penetrates both ends of the band iron 26 (it may pass through a lower stirrup). And a steel rod 2 as shown in FIG.
8 and an annular portion 2 provided at both ends of the steel rod 28 by bending.
9 and a steel rod 30 as shown in FIG.
And a projecting portion 31 which is bent at both ends of the steel bar 30 and which fixes the projecting portion 31 to the connecting frame 22 via a wire.

The material of the pair of left and right side plates 21, 21 is as follows.
There are hard plastic plates, thick plates, metal laths, and clamp steel.

The attachment of the connecting frame 22 to the side plates 21, 21 is performed, as shown in FIG.
The rotary bends 32 provided at the outer ends of the side plates 2
1 is rotatably engaged with the vertical or horizontal wire rod of the steel forming 1, but may be attached by a method other than the above.

The above-mentioned formwork A pushes both side plates 21, 21.
I spread it out and put it in the formwork setting place as shown in FIGS.
In addition , a U-shaped lower stirrup 44 is disposed on one of the front and rear sides of each connection frame 22, and the lower stirrup 44 is fixed to the connection frame 22 via a clip (not shown) or the binding wire 42.

After that, the lower main reinforcing bar 41 is arranged in the lower slap 44, and the lower main reinforcing bar 41 is fixed to the lower stirrup 44 via the binding wire 42.

Thus, the width regulating member B is attached, the upper main reinforcing bar 43 is arranged, and the width is fixed via the binding wire 42.

Thereafter, the upper stirrup 45 is fitted, and the upper stirrup 45 is fixed to the connecting frame 22 via the binding wire 42. Then, mortar or concrete is poured between the side plates 21, 21.

[0031]

Since the slope protection method according to the present invention is implemented as described above, the lower main reinforcing steel can be dropped and arranged in the connecting frame or the lower stirrup after the installation of the formwork.

Therefore, the work of arranging the rebar becomes extremely easy, and the work of fixing the lower main rebar becomes easy.

Further, since the width regulating member is used, the disadvantage that the upper portions of both side plates are widened by the cast concrete is eliminated, and the width of the cast concrete becomes uniform.

[Brief description of the drawings]

FIG. 1 is a perspective view of a mold used in the method of the present invention.

FIG. 2 is a longitudinal enlarged front view of the above.

FIG. 3 is a perspective view of a width regulating member.

FIG. 4 is a perspective view of another width regulating member.

FIG. 5 is a perspective view of another width regulating member.

FIG. 6 is a front view showing an enforced state;

FIG. 7 is a side view of the above.

FIG. 8 is a front view showing a conventional formwork.

[Explanation of symbols]

 Reference Signs List A Form frame B Width regulating member 21 Side plate 22 Connection frame 23 Connection rod 24 Horizontal rod 25 Vertical rod 26 Band iron 27 Light transmission 41 Lower main reinforcing bar 42 Binding wire 43 Upper main reinforcing bar 44 Lower stirrup 45 Upper stirrup

Claims (1)

(57) [Claims] 1. A pair of left and right side plates and a pair of side plates are arranged side by side at predetermined intervals in front and rear, and both upper and lower sides of the both side plates are attached to each other by appropriate means. After arranging the formwork constituted by the connecting frame at a predetermined position on the slope, each U-shaped lower stirrup is fixed to the connecting frame by an appropriate method, and then the lower star is connected from the upper opening of the connecting frame. A lower main reinforcing bar is dropped into the wrap and arranged, and is fixed to the lower stirrup by an appropriate method. Thereafter, a width regulating member is provided on both upper ends of the lower stirrup or both upper ends of the connection frame. After engaging both ends, the upper main reinforcing bar is placed and arranged on this width regulating member, and is fixed by an appropriate method, and then the U-shaped upper stirrup is dropped and arranged. After fixing by an appropriate method, A slope protection method characterized by placing mortar or concrete in a frame.