JPH08144287A - Sloped form and execution method thereof and form for forming sloped form - Google Patents

Abstract

PURPOSE: To conduct the execution of works safely and surely, and to improve profitability and shorten the term of works. CONSTITUTION: In cross-shaped forms constituted in such a manner that arm sections being projected in all directions and having approximately inverted U-shaped cross sections are formed and reinforcing materials are installed into each arm section while the reinforcing materials 3 are exposed from two lateral arm sections 22 for forming a sloped form in the lateral direction, the lateral arm sections 22 are placed in the lateral direction of a slope and fixed temporarily by anchors 4, and the reinforcing materials 3 exposed from the lateral arm sections 22 of a plurality of cross-shaped forms mounted on a slope are connected mutually. A solidifying material is poured into the cross-shaped forms, the solidifying material is hardened, and the anchors 4 are stretched again, thus fixing the cross-shaped forms on the slope.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method frame for stabilizing slopes, a method of constructing the method frame, and a method frame forming frame.

[0002]

2. Description of the Related Art In the construction of roads, railways, etc., a legal framework is constructed to prevent the collapse of slopes and to maintain the scenery. The conventional method frame is generally constructed on a slope in a vertical and horizontal lattice pattern. Further, as a conventional method of constructing a method frame, a concrete frame construction method of cast-in-place or a plurality of cross-shaped precast concrete frames or concrete plates are set respectively on the heads of anchors provided on the slopes, and tension is applied to each anchor. A construction method for stabilizing the slope by giving it is known.

[0003]

[Problems to be Solved by the Invention] The above-mentioned conventional method frame and its construction method have the following problems. <B> Since the vertical frame is continuous in the vertical direction on the slope, it is necessary to excavate a large cross section at a time and build a large-scale legal frame in order to reduce the number of seams of concrete due to strength problems. There is. Therefore, there is a risk that the upper excavation slope will collapse during the work. <B> Since the vertical frames are continuous, the vertical frame cross-section is the same, and the amount of concrete placed is unnecessarily large, which is uneconomical. <C> The cross-shaped concrete frame or concrete plate is
Since it is an independent structure, the individual frames or plates are not continuous, and there is no adhesion to the ground, so the concrete frame with the anchor broken during an earthquake etc. may fall off the slope. is there. <D> Since the cross-shaped concrete frame is made of precast, the bottom surface cannot follow the unevenness of the site slope, and the ground reaction force applied to the frame concentrates on the ground contact part, so the frame body must withstand this reaction force. It is uneconomical to increase the cross-section thickness. <E> Further, since the frame and the ground are not in close contact with each other, the ground below the frame is eroded by raindrops and the like, and the slope becomes unstable. <F> The cast-in-place concrete frame requires a long construction period, and since the entire slope is excavated before construction starts, there is a risk of slope collapse and there is a problem with safety.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to carry out the construction safely and surely and to improve the economical efficiency and shorten the construction period. It is possible to provide a legal frame, a method for constructing the legal frame, and a formwork for forming the legal frame.

[0005]

The present invention is a legal frame characterized by comprising a lateral frame continuous in the lateral direction of a slope and a cantilevered vertical frame intersecting the lateral frame. Further, it has an arm portion having a substantially inverted U-shaped cross section that projects in all directions, and a reinforcing material is attached to each arm portion, and the reinforcing material is exposed from the two lateral arm portions for forming the lateral frame. The cross-shaped formwork is positioned in the lateral direction of the slope and temporarily fixed with an anchor, and the reinforcing members exposed from the crossarms of the cross-shaped formwork installed on the slope are connected to each other. Then, a solidifying material is poured into the inside of the cross-shaped mold, and after the solidified material is hardened, the anchor is tensioned again to fix the cross-shaped mold on the slope, which is a method of constructing a method frame. . Further, it has an arm portion having a substantially inverted U-shaped cross-section that projects in four directions, and a reinforcing material is attached to each arm portion, and the reinforcing material is exposed from the two lateral arm portions for forming the lateral frame. It is a formwork for forming a legal frame, which is characterized in that

[0006]

Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings.

<A> Method frame (FIG. 1) The method frame 1 of the present invention is a horizontal frame 11 continuous in the lateral direction of the slope.
And a cantilevered vertical frame 12 that intersects the horizontal frame 11, and the vertical frame 12 is formed in a tapered shape. Horizontal frame 11
, Are arranged laterally on the slope, and therefore bending moments act, so it is necessary to form them in the same cross-sectional shape. However, since the vertical frame 12 does not act bending moments, only tensile force acts. The cross-sectional shape can be tapered and reduced, and the amount of concrete and the amount of reinforcing steel can be saved, which is economical.

<B> Method for applying method frame [1] Form for method frame (FIGS. 1, 2 and 3) The method frame 2 for forming a method frame according to the present invention has a lateral arm portion 22 in the left-right direction from a central portion 21. And has a cross shape in which a vertical arm portion 23 is formed in a direction orthogonal to the horizontal arm portion 22. When the method frame forming mold 2 is a buried mold, it is made of concrete or the like, and when it is a demolding mold, it is made of wood, steel or the like. Also the central part 2
1. Forming frame 1 for forming a legal frame, which includes a horizontal arm portion 22 and a vertical arm portion 23.
A reinforcing material 3 such as a reinforcing bar is arranged in advance in the inside of.

(A) Center part (FIGS. 1, 2, and 3) The center part 21 is a part located at the center of the form forming frame 2 for forming the normal frame. An anchor through hole 211 is provided in the center of the center portion 21 for installing the legal form forming mold 2 on the head of the anchor 4.

(B) Lateral arm portion (FIGS. 1, 2, and 3) The lateral arm portion 22 is a frame body that continuously extends in the left-right direction from the above-described center portion 21, and is a lateral normal frame on the slope 5. Is for forming. The cross section of the lateral arm portion 22 is substantially U-shaped, and the central arm portion 21 to the distal end portion 221 have the same sectional structure.

(C) Vertical arm portion (FIGS. 1, 2 and 3) The vertical arm portion 23 extends vertically from the center portion 21 of the form forming frame 2 perpendicularly to the above-mentioned horizontal arm portion 22. It is a body and is for forming a vertical normal frame on the slope 5. The vertical arm portion 23 has a substantially inverted U shape similar to the horizontal arm portion 22 described above.
Although it has a V-shaped cross-sectional structure, it has a cross-sectional structure that tapers from the central portion 21 toward the tip portion 231. In addition, one end portion 231a (the slope mountain side) of the vertical arm portion 23 is opened to form the opening 232, and the other end portion 231b (the slope valley side) is closed to form the closing portion 233. The tip 23
It is also possible to form both 1a and 231b open.

(D) Solidifying material inlet (FIGS. 2 and 3) The solidifying material inlet 24 is appropriately formed in the central portion 21, the lateral arm portions 22, and the vertical arm portions 23. The solidified material injection port 24 is preferably formed in a portion where it is difficult to completely fill the solidified material when the method frame forming mold 2 is arranged on the slope 5. FIG.
3 shows an example in which the solidified material injection port 24 is formed on the mountain side surface of the lateral arm portion 22.

(E) Reinforcing material (FIG. 4) Center portion 21, lateral arm portion 22, vertical arm portion 2 of the formwork 2 for forming a method frame
A reinforcing member 3 such as a reinforcing bar is attached inside the 3 in a cross shape.
At this time, the reinforcing material 3 is applied from both the end portions 221 of the lateral arm portion 22.
Is exposed for the required length. Further, since the vertical arm portion 23 is tapered, it is possible to reduce the reinforcing material 3 attached to the vertical arm portion 23. As an example of a method of attaching the reinforcing member 3, a supporting member 26 such as a rod-shaped bolt is installed between the holes 25 provided at the opposite positions of the side plates of the arm portions 22 and 23 of the method frame forming form 2, It is conceivable to connect the supporting member 26 to the supporting member 26 by a known means such as binding the reinforcing member 3 with a steel wire.

[2] Slope excavation (FIG. 2) The site slope 5 is excavated laterally with a width that allows the form forming frame 2 to be installed. Hereinafter, the installation and excavation of the formwork 2 for forming the method frame is repeated below the slope 5 to perform the reverse winding method.

[3] Anchor fixing (FIG. 1) The anchors 4 are fixed on the excavated slope 5 with a required number of anchors at a predetermined interval. The head of the anchor 4 is left with the tension member exposed.

[4] Arrangement of Formwork for Forming Method Frame (FIGS. 1 and 2) Formwork 2 for forming method frame is arranged on the head of each anchor 4. The procedure for arranging the form 2 for forming the legal frame is as follows. First, each of the method frame forming molds 2 is carried into the site with the reinforcing material 3 arranged in advance inside. Each of the frame forming molds 2 carried in has an anchor through hole 211 formed in the center portion 21.
The heads of the anchors 4 are placed on the slope 5. At this time, the horizontal arm part 22 of the form forming frame 2 is positioned in the lateral direction of the slope 5, and the closing part 233 of the vertical arm 23 is positioned on the valley side of the slope 5. After the method frame forming mold 2 is arranged, the anchor 4 is tensioned to temporarily fix the method frame forming mold 2 on the slope 5.

[5] Connection of Exposed Reinforcing Materials (FIGS. 1 and 2) Reinforcing materials 3 exposed in advance from the front end portions 221 of the lateral arm portions 22 of the frame forming mold 2 adjacent to each other on the slope 5 are connected. To do. The reinforcing material 3 can be connected by a known connecting method such as welding or winding a wire through the connecting material.

[6] Pouring of Solidifying Material (FIG. 5) A mold is simply assembled only on the exposed portion of the reinforcing material 3, and a solidifying material such as concrete is poured into the mold 2 for forming the method frame. The solidifying material is injected from the opening 232 of the vertical arm portion 23 and the solidifying material injection port 24 formed in the method frame forming mold 2. At this time, when the front end portion 231b of the vertical arm portion 23 is opened, a plate frame or the like is attached and closed. Since the bottom surface of the form forming frame 2 is open, the solidifying material adapts to the natural shape of the slope 5. Thereby, the slope 5 of the form 2 for forming the normal frame
The groundability to the ground is greatly increased.

[7] Fixing of Forming Form (FIG. 1) After curing and hardening the solidified material injected into each forming frame 2, each anchor 4 is fully tensioned. The head of the anchor 4 that has completed the main tension is cut, rust-proofed, and covered with a known cap 41 or the like. The form 2 for forming a legal frame is buried. By repeating the above-mentioned steps, the form 2 for forming the normal frame is arranged in a predetermined range on the slope 5.

[0020]

[Embodiment 2] In the above-mentioned embodiment, an example in which the vertical frame 12 of the legal frame 1 and the vertical arm portion 23 of the legal frame forming mold 2 are formed to have a tapered cross section has been described.
Not limited to this, the vertical frame 12 and the vertical arm portion 23 may be formed to have the same cross section as the horizontal frame 11 and the horizontal arm portion 22.

[0021]

[Third Embodiment] The above embodiment has been described with respect to an example in which the method frame forming mold 2 is buried. However, after the hardening of the solidified material, the method frame forming mold 2 is released from the mold and the anchor 4 is tensioned again. Then, the legal frame 1 may be fixed on the slope.

[0022]

[Embodiment 4] In the above embodiment, an example in which the bottom surface of the method frame forming mold 2 is completely opened has been described. It is also conceivable to attach the flexible sheet member 6 having pores to the extent that the solidifying material such as fine fish nets and flexible wire nets exudes. As the sheet member 6, when a sheet member 6a for closing the bottom surface of the method frame forming mold 2 in a bag shape as shown in FIG. 5 is used, a velcro tape, a chuck, a belt are provided in the central portion like the sheet member 6b of FIG. Connecting means 6 such as a hook
In the case where 1 is attached and can be opened and closed on both sides, as in the sheet member 6c of FIG. 7, it is attached in a strip shape to the bottom portion of the form forming frame 2 for folding, and is folded into the arm portion so that a pin etc. There may be a case where the fixing member 62 is used for fixing. This allows
Even if the viscosity of the solidifying material injected into the formwork 2 for forming the legal frame is low, the gap between the bottom surface of the formwork 2 for forming the legal frame and the ground slope 5 is closed by the sheet member 6, so that the solidifying material is removed. It does not flow out of the form 2 for forming a legal frame. Further, since the sheet member 6 easily follows the unevenness of the ground slope 5 due to the injection of the solidifying material, there is no occurrence of a non-land portion between the method frame forming mold 2 and the ground slope 5. Further, since the solidified material oozes out from the sheet member 6, the adhesion with the ground slope 5 is improved.

[0023]

[Embodiment 5] As shown in FIG. 8, a plurality of molds 2 for forming a method frame are preliminarily connected to each other in the lateral direction and carried into the site, and the slope 5
It is also conceivable to fix it in.

[0024]

Since the present invention is as described above, the following effects can be obtained.

<B> Since the vertical frame is a cantilever type and is not continuous vertically, it is sufficient to excavate a narrow area between both ends of the vertical frame in the horizontal direction, and there is no risk of slope collapse as in the conventional case. <B> Further, since the vertical frame can be formed in a tapered shape, the solidifying material and the reinforcing material can be largely saved. <C> Since the horizontal frame of the slope has a continuous frame structure,
Since the proof stress becomes larger than that of the independent frame, the frame cross section can be made smaller, which is very economical. <D> Since a plurality of frame bodies are continuous in the lateral direction, even when the anchor is broken, the individual frame bodies do not slip on the slope. <E> Since the formwork for forming the method frame has an approximately inverted U-shaped cross section and the bottom is open, the concrete poured inside adheres to the ground, so the ground at the bottom of the method frame is washed with raindrops. Never be taken. <F> In addition, because it becomes a frame that closely contacts the unevenness of the ground,
The ground reaction force applied to the frame becomes uniform. <G> Since it can be done by reverse winding construction, the construction period can be greatly shortened and high construction safety can be secured. <H> As the prefabricated frame structure is assembled,
Work on the slope of the site is greatly saved. <Re> By adopting concrete formwork, almost no wooden formwork is used, which will lead to the protection of forests that has become popular in recent years.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment of a legal framework of the present invention.

FIG. 2 is an explanatory diagram of a method of constructing a method frame according to the first embodiment.

FIG. 3 is an explanatory view of a form forming frame for forming a method frame according to the first embodiment.

FIG. 4 is an explanatory view of a form forming frame for forming a method frame according to the first embodiment.

FIG. 5 is an explanatory diagram of a seat member according to a fourth embodiment.

FIG. 6 is an explanatory view of a sheet member of Example 4.

FIG. 7 is an explanatory diagram of a seat member according to a fourth embodiment.

FIG. 8 is an explanatory diagram of a continuous formwork of Example 5.

Claims (9)

[Claims] 1. A method frame for stabilizing a slope, which is constructed on a slope, comprising a horizontal frame continuous in the horizontal direction of the slope and a cantilevered vertical frame intersecting with the horizontal frame. , Legal frame. 2. A method frame for stabilizing a slope constructed on a slope, comprising a horizontal frame continuous in the lateral direction of the slope and a cantilevered vertical frame intersecting with the horizontal frame, wherein the vertical frame is tapered. A legal frame characterized by being formed into a shape. 3. A method of constructing a slope frame for stabilizing a slope, comprising arm portions each having a substantially inverted U-shaped cross section that projects in four directions, and a reinforcing material is mounted in each arm portion, and for forming a horizontal slope frame. Of 2
A cross-shaped frame formed by exposing the reinforcing material from the two lateral arms, and the cross-shaped frames placed on the slope with the lateral arms positioned in the lateral direction of the slope and temporarily fixed with an anchor. The reinforcing materials exposed from the lateral arms are connected to each other, the solidifying material is poured into the cross-shaped mold, and after the solidifying material is cured, the anchor is tensioned again to fix the cross-shaped framework on the slope. The method of construction of the legal framework, which is characterized by that. 4. A method of constructing a method frame for stabilizing a slope, wherein the method has an arm portion having a substantially inverted U-shaped cross section that projects in four directions, and a reinforcing material is attached to each arm portion and for forming a lateral method frame. Of 2
A cross-shaped frame is formed by exposing two reinforcing arms from one lateral arm portion and forming two vertical arm portions for forming a vertical normal frame in a tapered shape. Position and temporarily fix with anchors, connect the reinforcing members exposed from the lateral arm portions of a plurality of cross-shaped molds installed on the slope, pour a solidifying material into the cross-shaped molds, and solidify the solidifying material. After hardening, the anchor is tensioned again to fix the cross-shaped formwork on the slope. 5. The method for constructing a method frame according to claim 3 or 4, wherein after the solidifying material is hardened, the cross-shaped form is released from the mold, and the anchor is tensioned again so that the cross-shaped form is on the slope. A method of constructing a legal framework characterized by being fixed to 6. The method for constructing a legal frame according to claim 3, wherein a sheet member is attached to the bottom of the cross-shaped mold, and the gap between the bottom of the cross-shaped mold and the slope is formed into the sheet member. A method of constructing a method frame, characterized in that the solidified material is poured into the cross-shaped mold by closing with. 7. A form forming frame used for a method of constructing a slope for stabilizing slopes, comprising arm portions having a substantially inverted U-shaped cross section that projects in all directions, and a reinforcing material is attached to each arm portion. A formwork for forming a method frame, characterized in that a reinforcing material is exposed from two lateral arm portions for forming a method frame in the lateral direction. 8. A method frame forming form used for a method of constructing a method frame for stabilizing slopes, which has arm portions having a substantially inverted U-shaped cross section protruding in all directions, and a reinforcing material is attached to each arm portion. The reinforcing material is exposed from the two lateral arm portions for forming the lateral direction frame, and the two vertical arm portions for forming the longitudinal direction frame are formed in a tapered shape. Formwork for forming legal frame. 9. The formwork for forming a method frame according to claim 7 or 8, wherein a sheet member is attached to a bottom portion of each of the arm portions.