JPH08277531A - Disposable form block for protection of slope and application thereof - Google Patents

Abstract

PURPOSE: To provide a disposable form block for protection of a slope and the application method thereof, which is not required to remove, although it is constructed at site and which has a large pressure-receiving area even though the preparation of the slope is rough and further, which is reliable in the protection of the slope. CONSTITUTION: A bottom support frame 13 in which a pipe 15 for inserting an anchor is vertically fixed on the bottom plate 13a, is arranged in a hollow block frame body provided with side faces 3 as a unit and opened at the bottom face, in such a state that the bottom plate 13a is projected from the lower edge of the side faces 3. A form 16 for structural reinforcements contained in the hollow inside space is fixed to the bottom support frame 13 and opened bottom face 4 is covered with a loose sheet material 18. The side edge of the sheet material is fixed to the side faces 3. A disposable form block for the protection of a slope is placed on the slope through the bottom support frame 13 and an anchor material is temporarily tensed and concrete is placed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slope protection scrap block used for protecting slopes when constructing tracks, roads, residential land development, dams, and slopes using the blocks. Related to the construction method of.

[0002]

2. Description of the Related Art As is well known, when protecting slopes for constructing roads, etc., it is common to directly install factory-produced concrete blocks on the slopes or to use concrete directly on the slopes on site. Is installed and a protection block is constructed. Then, as disclosed in, for example, Japanese Patent Laid-Open No. 6-212639, a concrete placing space is constituted by a top plate, side plates and a bottom sheet, and a formwork in which a reinforcing bar is incorporated is used as a slope on the site. It has been proposed a method of protecting the slope by installing it via an anchor, placing concrete in the casting space of the formwork, and removing it after curing and curing.

[0003]

However, in the above-mentioned conventional slope protection construction method, since the construction is carried out on site using the formwork, concrete is cured and hardened on the slope in a mountainous area, etc., and then removed from the mold. The work is extremely troublesome and the construction period is long, and especially on a large area slope or dam site where a large area is to be constructed, it is extremely dangerous work and a lot of time is required for demolding after curing the concrete. It will be.
Therefore, there is a demand for a protective block and a construction method thereof which are on-site construction but do not require demolding and have a large pressure receiving area on the slope and are reliable in slope protection. On the other hand, in order to obtain a large pressure receiving area, the ground must be leveled flat, and this leveling work is troublesome and
It was dangerous. The present invention has been proposed in view of the above, there is no need to remove the mold while being on-site construction, and even if the slope is rough, the pressure receiving area is large and the slope is highly reliable in slope protection. It is an object of the present invention to provide a protection formwork block and a construction method thereof.

[0004]

In order to achieve the above-mentioned object, the present invention comprises a bottom support frame body having an anchor insertion pipe mounted upright on a bottom plate in the longitudinal direction of the bottom surface of the open hollow block frame body.ゞ A structure in which the bottom plate is projected from the lower edge of the side part at the center or at the crossing part where the vertical part and the horizontal part intersect in a cross shape, and is housed in the hollow inside of the hollow block body. The reinforcing bar frame is fixed to the bottom support frame, the open bottom surface of the hollow block frame is covered with a loose sheet material, and the side edge of the sheet material is fixed to the side surface of the hollow block body. The present invention relates to a straight or cruciform slope protection dead frame block that is fastened via attachment means and a method of constructing the same.

[0005]

According to the present invention, by using the scrap frame block for slope protection, the pressure receiving area is large and the reliability is high even if the slope is not leveled well without demolding during on-site construction. Achieve high slope protection. Further, when the scrap frame block is placed on the slope and the anchor is temporarily tensioned, no load is applied to the side edge portion of the scrap frame block, so that there is no risk of damage.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 7 show a first embodiment of the present invention, in which a horizontally long sloped surface protection scrap frame 1 extends downward from an upper surface portion 2 and side edges of the upper surface portion 2. It is a hollow block frame body 5 having an inverted U-shaped cross section in which the left and right side surfaces 3, 3 are integrally provided and the bottom surface 4 is open.

The hollow block frame 5 has a through hole 8 for inserting an anchor, which will be described later, formed in the central portion 7 of the upper surface portion 2, and one side surface portion 3, that is, a slope of a slope during construction. When installed along the side, the side wall 3 located on the upper side of the slope is provided with pouring openings 9 and 9 for the fresh concrete and insertion openings 10 and 10 for the vibrator on the left and right, and an air vent 11 at an appropriate position. Is the configuration that was opened. The hollow block frame 5 has a tapered shape in which the height gradually decreases from the central portion 7 toward both ends, and both ends are closed. It should be noted that connecting metal fittings 12 for connecting the adjacent hollow block frame bodies 5 may be provided on both ends as needed. Further, in the illustrated embodiment, a groove portion 8a into which a supplemental steel plate 31 described later can be inserted is formed around the through hole 8.

The central portion 7 of the hollow block frame 5
A bottom support frame 13 is provided on the open bottom surface 4, in other words, on the bottom surface 4 approximately at the center in the longitudinal direction. As shown in FIG. 7, the bottom support frame 13 includes a bottom plate 13a made of a substantially rectangular iron plate having an insertion hole for providing an anchor insertion pipe 15 to be described later in the center, and is made of metal on four sides surrounding the insertion hole. The angle-shaped mold member 14 is provided upright, and the top plate 13b having an insertion portion for providing an anchor insertion pipe is fixed to the upper end of the mold member 14. In addition, the bottom plate 1
An anchor insertion pipe 15 is erected upright between the 3a and the top plate 13b so as to connect the insertion hole and the insertion portion. Incidentally, for fixing the above-mentioned respective members, an appropriate means such as welding is used.

Further, a mounting nut 32 for mounting a supplemental steel plate 31 to be described later is welded to an appropriate position of the top plate 13b, for example, four places surrounding the anchor insertion pipe 15.

The bottom support frame 13 constructed as described above is disposed on the bottom surface 4 of the central portion 7 where the bottom plate 13a projects downward from the lower edge of the side portion 3, and the central portion 7 is provided. The auxiliary steel plate 31 capable of bearing the load of the anchor described later is inserted into the groove portion 8a formed on the upper surface of the base plate, and the mounting long bolt 33 is screwed into the mounting nut 32 of the top plate 13b, whereby the bottom support frame. The body 13 is a hollow block frame body 5
Attach to In this state, the anchor insertion pipe 15 and the through hole 8 provided in the central portion 7 communicate with each other so that the anchor can be inserted.

On the other hand, the structural rebar frame 16 housed inside the hollow of the hollow block frame 5 is fixed to the bottom support frame 13. The structural reinforcing bar frame 16 has a horizontally long structure in which a horizontal reinforcing member and a vertical reinforcing member are combined and fixed by welding or the like, and is fixed to the bottom support frame 13 by welding via a separator 17 or the like described later. Also, this separator 1
7 are arranged at appropriate intervals between the side surfaces 3 and 3 facing each other.

Further, the bottom surface 4 of the hollow block frame 5 is covered with a slackened sheet material 18, and the side edge portion of the sheet material 18 is fastened by an appropriate fastening means. The above-mentioned sheet material 18 is made of a relatively thick synthetic resin sheet, cloth, non-woven fabric or the like, has high flexibility, and is a material that allows water to penetrate but does not allow mortar components and fine aggregates to pass through. The vertical width and the horizontal width are sufficiently longer than the bottom surface 4 of 5. Therefore, when all the side edge portions of the sheet material 18 are fixed to the side surface portion 3 via the fixing means described later, the scrap frame 1
The bottom surface 4 which is open can be closed in a loosened state.

In the fastening means, as shown in FIG. 9, for example, a high nut 42 is attached to an end portion of the separator 17 which is inserted into a tapered hole 41 formed in the side surface portion 3 at an appropriate interval, and the high nut 42 is attached. A bolt 43 is attached to the device 42. That is, the side edge portion of the sheet material 18 is sandwiched and sandwiched by the bolts 43. According to the illustrated embodiment, the side edge portion of the sheet material 18 is folded back to form the bag-shaped batten insertion portion 18a. On the other hand, the auxiliary metal piece 44 as a batten that is inserted into the batten insertion portion 18a is a long metal material and has fastening holes 45 formed at intervals corresponding to the intervals of the tapered holes 41 of the side surface portion 3. . Then, the auxiliary metal piece 44 is inserted into the batten insertion portion 18a, and the washer 46 is attached to the high nut 42 attached to the separator 17 described above.
The sheet material 18 is fixed to the hollow block frame body 5 by tightening with the bolts 43 via the.

Although the horizontally elongated scrap frame 1 according to the first embodiment of the present invention has the above-described structure, in the second embodiment of the present invention shown in FIG. 10, the scrap frame 1'is vertically long. It is shaped and has a configuration in which a pouring port 19 for ready-mixed concrete is opened at the upper end.
Since other configurations are almost the same as those of the first embodiment, the same reference numerals are given and detailed description will be omitted.

In order to manufacture the scrap frame 1 of the first embodiment and the scrap frame 1'of the second embodiment described above, the inner surface shape corresponding to the outer shape of the side surface portion 3 of the scrap frame 1 is used. The outer formwork having the outer formwork and the inner formwork having the outer form shape that matches the inner formwork of the waste formwork 1 are used, the inner formwork is installed inside the outer formwork, and the outer formwork and the inner formwork are provided. If necessary, reinforced reinforcing bars are placed in the inverted U-shaped space surrounded by, and ready-mixed concrete is placed, and the top surface is shaped to match the top part 2 of the scrap frame 1 and ready-mixed concrete Cure and cure. The hollow block frame body 5 can be manufactured by curing the green concrete and removing it from the mold when it hardens.

Next, the structural rebar frame body 16 and the bottom support frame body 13 are arranged on the bottom surface 4 of the central portion 7, and the bottom support frame body 13 is arranged.
To the mounting nut 32 of the top plate 13b fixed to the auxiliary plate 31
The mounting long bolt 33 that is passed through the mounting hole is screwed into the bottom support frame 13 and the hollow block frame 6 to be integrated. In addition, the separator 1 is provided in the tapered holes 41 opened at appropriate intervals.
Wear 7. Then, the structural rebar frame 16 is housed inside and the bottom support frame 13 is located on the bottom surface 4 of the central portion 7 to form the scrap frame 1, so that the sheet material is loosened around the periphery of the open bottom surface 4. By fixing 18 to each other, the scrap frame 1 can be manufactured.

Next, a construction method using the scrap frame 1 having the above structure will be described. In order to construct and protect the scrap frame 1 of the first embodiment of the present invention or the scrap frame 1'of the second embodiment on the slope, as shown in FIGS. The anchor a that is driven in is arranged laterally in the scrap frame 1 of the first embodiment, and the anchor insertion pipe 15 of the bottom support frame 13 is inserted to temporarily tension the anchor a. The blank frame 1'is arranged in the vertical direction, and the anchor a is inserted into the anchor insertion pipe 15 of the bottom support frame 13 to temporarily tension the frame. At this time, the load of the anchor a is borne by the bottom support frame body 13 which is partially projected from the scrap frames 1 and 1 '.
The lower edge of the side surface part 3 is not damaged.

As described above, the scrap frame 1 of the first embodiment of the present invention is arranged in the horizontal direction, and the scrap frame 1'of the second embodiment is arranged in the vertical direction and temporarily tensioned by the anchor a. Once installed on the slopes in a grid pattern, in the scrap frame 1, raw concrete is filled into the scrap frame 1 from the left and right pouring ports 9 and the left and right insertion ports 1
From 0, a vibrator is inserted to compact the fresh concrete, and in the case of the scrap 1 ', the fresh concrete is filled into the scrap 1 through the pouring port 19 at the upper end.

As described above, when the inside of the scrap frame 1 and the scrap frame 1'is filled with fresh concrete to fill it, moisture of concrete permeates from the sheet material 18 at the bottom,
Since the sheet material 18 adapts to the ground surface of the slope due to the filling pressure of the concrete, even if the ground surface is wavy or uneven, the entire bottom surface of the discarding frame 1 comes into contact with the ground. Then, when the concrete inside the scrap frame 1 is cured and hardened, the scrap frame 1 and the inside concrete are integrated, and the pressure receiving area of the scrap frame 1 with respect to the slope is significantly widened.

After the concrete inside the scrap frame 1 is hardened, the scrap frame 1 is firmly tensioned and fixed by the anchor a, whereby the scrap frame 1 and the scrap frame 1'having a grid shape on the slope.
Can be configured and protected. Further, when the concrete in the inside is hardened, the above-mentioned sheet material 18 becomes unnecessary and is removed. That is, the bolt 43 is removed and the auxiliary metal item 44 is pulled out from the batten insertion portion 18a of the sheet material 18. Then, since the batten insertion portion 18a and its periphery become free ends, the portion exposed from the slope is cut off. Then, if the taper hole 41 is filled with mortar or the like and the finishing process is performed, the appearance is improved. Further, the sloped surface can be protected more firmly by planting trees inside the scrap frame 1 and the scrap frame 1'and filling with gravel or the like. Incidentally, the auxiliary metal piece 44 and the bolt 43 can be reused.

12 to 20 show a third embodiment of the present invention, in which the scrap frame 1 of the first embodiment and the scrap frame 1'of the second embodiment are integrated. It is a cross-shaped scrap frame 1 ″. The concrete structure of the scrap frame 1 ″ of the third embodiment is a hollow block frame in which a horizontal portion 21 and a vertical portion 22 having an inverted U-shaped cross section are crossed. The body 23 is formed, and the horizontal portion 21 has the pouring port 9 and the insertion port 1 in the same manner as the scrap frame 1 of the first embodiment.
0 and the air vent 11 and the like, and the setting port 19 is opened at the upper end of the vertical portion 22. Further, other configurations are almost the same as those of the first embodiment described above, and therefore, the same reference numerals are given and detailed description thereof will be omitted.

Then, a bottom support frame 13 having the same structure as that of each of the above-described embodiments is arranged at a hollow crossing portion 24 where the horizontal portion 21 and the vertical portion 22 intersect and the bottom surface is open. At the same time, the cross-shaped structural rebar frame 16 ″ is housed inside the scrap frame 1 ″.

The scrap frame 1 "of the third embodiment of the present invention has a cruciform structure in which the hollow block frame 23 is preliminarily molded with concrete alone or with reinforced concrete as in the above embodiments. The bottom support frame body 13 to which the reinforcing bar frame body 16 ″ is fixed is installed at the open bottom portion of the intersecting portion 24. At this time, the bottom plate 13 a of the bottom support frame 13 slightly projects downward from the lower edge of the side surface part 3.

Even when the scrap frame 1 "is applied to the slope, the scrap frame 1" placed on the slope by the bottom support frame 13 is temporarily pretensioned by the anchor a, and left and right driving is performed. Mouth 9
While filling the lower part of the vertical portion 22 and the left and right horizontal portions 21 with fresh concrete from the insertion opening 10, it is tampered with by a vibrator, and when the horizontal portion 21 is filled, an appropriate lid member is placed on the pouring opening 9 Then, after applying and closing the insertion port 10, fresh concrete is further filled from the pouring port 19 at the upper end of the vertical portion 22 to fill it. When the ready-mixed concrete inside the scrap frame 1 ″ is cured and hardened, the scrap frame 1 ″ is fixed on the slope by the anchor a. The lid member may be removed after hardening the concrete.

As described above, the scrap frames 1 ″ are continuously installed on the slope in the front, rear, left, and right directions, and the scrap frames 1 ″ are adjacent to each other in the front, rear, left, and right.
By connecting the connecting metal fittings 12 with each other, it is possible to construct a grid-shaped protective structure. In particular, the scrap frame 1 ″ is opened by the sheet material 18 with a loose bottom surface, and the concrete surface has a sloped surface. Since the pressure-receiving area is significantly widened by fixing and the slope is firmly protected, it is possible to significantly reduce the risk of demolding work and labor. Even if the ground surface has irregularities, the side surface part 3 of the scrap frame 1 ″ is not damaged.
Even in the embodiment using the scrap frame 1 ″, the unnecessary sheet material 18 is cut out as in the embodiment using the scrap frame 1 and the scrap frame 1 ′. Further, as shown in FIG. It is advisable to fill the recessed portion of the connecting portion with a filling material 51 such as mortar.

Although the present invention has been described above based on the embodiments of the drawings, the present invention is not limited to the above embodiments, and can be carried out in any manner as long as the configuration described in the claims is not changed. be able to.

[0027]

In summary, according to the present invention, the bottom support frame body in which the anchor insertion pipe is mounted upright on the bottom plate is provided at the center of the bottom surface of the hollow block frame body in the longitudinal direction, which is open,
Or at the crossing part where the vertical part and the horizontal part cross in a cross shape,
The bottom plate is arranged so that the bottom plate projects from the lower edge of the side surface portion, and the structural rebar frame body housed in the hollow inside of the hollow block body is fixed to the bottom support frame body to open the hollow block frame body. The straight or cruciform slope protection is obtained by covering the bottom surface of the hollow sheet with a loose sheet material, and fixing the side edge of the sheet material to the side surface of the hollow block through fastening means. The present invention relates to a waste formwork block and a construction method thereof.

Therefore, the scrap frame block for slope protection of the present invention can be manufactured consistently in the production plant, and the reinforcing bar frame can be incorporated therein, so that a stable and reliable scrap frame block can be provided. Therefore, it is possible to save labor on the construction site and shorten the construction period. In addition, since the load of the scrap frame block and the load of the anchor are supported by the bottom support frame during the construction of the slope, the side surface is not damaged. Further, since it is sufficient that the ground is not strictly leveled, it is possible to reduce work labor, work time and avoid danger. On the other hand, the sheet material allows concrete to adhere to uneven slopes, and temporary tension is applied by anchors to place fresh concrete, and the concrete is cured and set in the hardened state, which results in The pressure receiving area for can be made extremely wide, and a strong slope can be protected based on the ideal load distribution. In addition, the sheet material can prevent concrete from flowing out due to the slope at the construction site on the slope, and moreover, excess water contained in the concrete can be rapidly discharged, so that breathing is reduced,
Not only is it possible to achieve a remarkable effect due to the early development of strength of concrete, but it is also possible to achieve reliable and reliable slope protection with concrete filling and compaction. Furthermore, since it is not necessary to remove the mold after hardening the concrete during construction, it is possible to greatly reduce the labor and time required for the work based on the mold removal, and it is also possible to use the reverse winding method, which is practical. It will be extremely valuable.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of the present invention with a sheet material removed.

FIG. 2 is a plan view showing the first embodiment of the present invention.

FIG. 3 is a perspective view showing a first embodiment of the present invention with a sheet material removed.

4 is a sectional view of the first embodiment of the present invention, FIG.
3 is a cross-sectional view taken along line AA of FIG.

5 is a cross-sectional view of the first embodiment of the present invention, FIG.
3 is a cross-sectional view taken along line BB of FIG.

FIG. 6 is a bottom view of the first embodiment of the present invention.

FIG. 7 shows a bottom support frame, (A) is a plan view, (B)
Is a front view, and (C) is a cross-sectional view taken along line CC of (B).

FIG. 8 is a schematic perspective view showing a second embodiment of the present invention.

FIG. 9 is a cross-sectional explanatory view of a mounting portion of a sheet material according to the present invention.

FIG. 10 is a schematic front view of a construction state of the first and second embodiments of the present invention.

FIG. 11 is a schematic side view of a construction state of the first and second embodiments of the present invention.

FIG. 12 is a plan view showing a third embodiment of the present invention.

FIG. 13 is a sectional view of an intersecting portion according to a third embodiment of the present invention.

FIG. 14 is a side view showing a third embodiment of the present invention.

FIG. 15 is a front view showing a third embodiment of the present invention.

FIG. 16 is a cross-sectional view showing a third embodiment of the present invention in a state where the scrap frame is inverted.

FIG. 17 is a bottom view showing the third embodiment of the present invention.

FIG. 18 is a cross-sectional view showing a third embodiment of the present invention, in which the scrap frame is inverted and the reinforcing bar frame is mounted.

FIG. 19 is a bottom view showing the third embodiment of the present invention in a state where the scrap frame is inverted and the reinforcing bar frame is mounted.

FIG. 20 is a schematic side view of a construction state of the third embodiment of the present invention.

[Explanation of symbols]

 1,1 ′, 1 ″ Waste frame 2 Top part 3 Side part 4 Bottom surface 5,23 Hollow block frame body 7 Central part 8 Through hole 9,19 Placing port 10 Insertion port 11 Air vent port 12 Coupling bracket 13 Bottom support frame Body 14 Angled shape material 15 Anchor insertion pipe 16, 16 "Structural rebar frame body 17 Separator 18 Sheet material 24 Crossing part

Front page continuation (71) Applicant 391005891 BLS Japan Co., Ltd. 3-226 Nishishinjuku, Shinjuku-ku, Tokyo Tachibana Shinjuku Building (72) Inventor Takashi Nakanishi 1-chome, Kamikotakaido, Suginami-ku, Tokyo 7th-16th Ozawa Concrete Industry Co., Ltd.

Claims (4)

[Claims] 1. A hollow block frame body having an inverted U-shaped cross section in which an upper surface portion and a side surface portion extending downward from an edge portion of the upper surface portion are integrally provided, and a bottom surface is open, for anchor insertion into a bottom plate. A bottom support frame having pipes mounted in an upright state is arranged in a state where the bottom plate is projected from a lower edge of a side face at a substantially central portion in a longitudinal direction of a bottom surface of the hollow block frame which is opened. The structural reinforcing bar frame housed in the hollow inside of the hollow block body is fixed to the bottom support frame body, the open bottom surface of the hollow block frame body is covered with a loose sheet material, and the side of the sheet material A scrap frame block for slope protection, in which an edge portion is fixed to a side surface portion of a hollow block body by a fixing means. 2. A hollow in which a vertical portion having an inverted U-shaped cross section and a horizontal portion which are integrally provided with a top surface portion and a side surface portion extending downward from an edge portion of the top surface portion and open at the bottom surface cross each other in a cross shape. A block frame body, in which a bottom support frame body in which an anchor insertion pipe is vertically attached to a bottom plate is provided at an open bottom portion of a crossing portion between a vertical portion and a horizontal portion of the hollow block frame body, and a bottom portion of a side surface portion. The bottom plate is arranged so as to project from the edge, and the cross-shaped structural rebar frame body housed in the hollow inside of the hollow block body is fixed to the bottom support frame body to open the hollow block frame body. A scrap frame block for protecting slopes, the bottom surface of which is covered with a slackened sheet material, and the side edge portions of the sheet material are fixed to the side surface portions of the hollow block body by fastening means. 3. A sheet in which an open lower surface of a hollow block frame body having an inverted U-shaped cross section in which an upper surface portion and a side surface portion extending downward from an edge portion of the upper surface portion are integrally provided and the lower surface is opened is slackened. The bottom support frame, which is covered with a material and has an anchor insertion pipe attached to the bottom plate in an upright state, is arranged inside with the bottom plate protruding from the lower edge of the side part, and the structural rebar frame is also inside. A scrap frame block for slope protection
It is placed on the slope with the bottom support frame and temporarily fixed to the slope by an anchor and fixed, and concrete is poured into the hollow inside of the scrap frame block for slope protection at the construction site to prepare the sheet material. A method for constructing a slope protection structure, characterized in that a protection block body is constructed on a slope by closely adhering to the ground of the surface and curing and curing, and the protection block body is firmly fixed by an anchor. 4. A hollow in which a vertical portion having an inverted U-shaped cross section and a horizontal portion, which are integrally provided with an upper surface portion and a side surface portion extending downward from an edge portion of the upper surface portion and whose lower surface is open, cross in a cross shape. Cover the open bottom surface of the block frame with a loose sheet material,
Inside the intersecting portion of the vertical portion and the horizontal portion, a bottom support frame body in which an anchor insertion pipe is attached to the bottom plate in an upright state is arranged with the bottom plate protruding from the lower edge of the side surface portion,
A scrap frame block for slope protection, which houses a cross-shaped structural rebar frame, is placed on the slope with the bottom support frame and temporarily fixed to the slope by an anchor. Immerse concrete in the hollow inside of the scrap frame block for surface protection at the construction site to adhere the sheet material to the ground of the slope and cure and harden to construct a protection block body on the slope, and use the anchor to A method for constructing a slope protection structure, characterized in that a protection block is firmly fixed.