JPH01111922A - Natural ground reinforcing structure and formwork therefor - Google Patents

Abstract

PURPOSE:To simplify operations by a method in which frame bars formed by hardening light-weight, corrosion resistant fiber bundles impregnated with a resin of high corrosion resistance are integrated with a netted material to form a formwork, and the formworks are set in parallel on the natural slope ground and concrete is placed into the formworks to bury them. CONSTITUTION:A frame bar 2 formed by hardening light-weight, strong, and corrosion-resistant fiber bundles of a thermal expansion coefficient similar to steel materials, which are impregnated with a resin, is combined with a netted material 3 to form a formwork 1. In this case, the frame bar of large size and the netted material 3 of small size are combined and their crossing points X are bound. The formworks 1 serving as reinforcing bars are set by mutually facing at a given interval on the sloped ground 4, spacing bars 5 are laid between the upper frame bars 2, and connectors 6 for anchor are set. An anchor 7 is fixed to the connectors 6 and then to the ground 4, and concrete 8 is sprayed onto the formworks 1 to bury them. The construction work can thus be attained at low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an underground reinforcement structure implemented to protect a sloped ground and a formwork used therein.

[Conventional technology]

One of the reinforcement methods for slopes and other elevated ground is to install concrete slope structures, but recently, in order to simplify and streamline construction, steel structures have been installed on slopes. Formwork or W4 mesh formwork is erected, reinforcing bars are placed between the formworks, the reinforcing bars are fixed to the slope with anchor bolts, and concrete is poured between the formworks to create a slope structure. A method of constructing things (
-For example, Japanese Patent Publication No. 53-46361, Japanese Patent Publication No. 54
-26801) has been implemented.

[Problem that the invention seeks to solve]

However, in the conventional construction method as mentioned above, construction materials are
Because it is made of steel, it is heavy, and it is difficult and inefficient to assemble formwork and rebar, especially on slopes where workability is poor. The drawback is that the formwork and reinforcing bars rust and corrode as time passes before pouring. Also, this allows 617 'l! ! 41 ; Existing things are g4 in them
Because concrete materials are buried, concrete
Due to insufficient zebraness, cracks in concrete, etc.
GI4 materials corrode and expand due to natural influences such as rainwater and man-made environmental influences such as exhaust gas.
There is a problem that the structure deteriorates and the original purpose cannot be achieved.11 The present invention was made to solve these problems. By using a special formwork made of superior materials that also serves as reinforcing, workability is extremely good, and it is possible to construct slope structures with high efficiency. The purpose is to provide a mountain reinforcement structure and a formwork for use therein.

[Means for solving problems]

In the ground reinforcement structure of the first invention, the axial reinforcement 2 and the net-like body 3 are integrally formed using a fiber bundle in which A-fibers having high strength in flt are impregnated with a highly corrosion-resistant resin material. harden to form a formwork 1, arrange the formwork 1 in parallel on the slope ground 4,
Place concrete ff8 between those formworks 1.1,
It is characterized in that the formwork 1, (1) is installed in concrete (M8).

In addition, the formwork used in the ground reinforcement method invented by @2 is made of corrosion-resistant and high-strength fibers! It is characterized by using A-fiber bundles bound with a fatty material, and forming an axial muscle 2 made of a thick fiber bundle and a reticular body 3 made of a thin A-zaki by intersecting each fiber bundle and integrally molding and hardening. That is.

〔Example〕

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

In the present invention, a formwork 1 that also serves as reinforcement is used. As shown in FIG. 3, the formwork 1 is formed of axial reinforcements 2.2 arranged in parallel at intervals and a mesh body 3 disposed between the axial reinforcements 2.2. The shaft bars 2 and the mesh body 3 that make up the formwork 1 are made of a resin material, which is impregnated with a bundle of corrosion-resistant fibers that are lightweight and have high strength and have a coefficient of thermal expansion comparable to that of iron or wood. The material is molded and hardened, and the intersections x, There is. As the above-mentioned fibers, lath fibers and carbon lt miscellaneous materials are suitable, but other materials such as
For example, synthetic resin fibers, ceramic fibers, or a suitable combination of these fibers can be used. *Ta,
As the resin material for binding the fibers, it is preferable to use vinyl ester resin, which has good adhesion to the fibers and has sufficient strength by itself, such as vinyl ester resin, unsaturated polyester resin, epoxy resin, phenol resin, etc. etc. can be mentioned.

In the structure of the present invention, the formwork 1.1, which is formed as described above and also serves as reinforcement, is placed on the ground 41 of the slope, facing each other at a required interval, and both formworks 1.1 are placed between them. Interlocking members 5.5 are installed at various places between the shaft reinforcements 2.2 in the E portion of the frame 1.1 to connect and assemble them. As shown in the figure, an anchor connecting material 6 is installed at a position corresponding to the intersection of the legal frames in [5], and an anchor 7 is installed on it.
are combined and fixed to the ground 4.

Next, concrete (concrete, mortar, etc.) J1t8 is sprayed between the formwork 1.1, and the formwork 1.1 is buried in concrete M8.

Generally speaking, in the reinforcement method for sloped ground, as shown in Figure 3, it is common to construct a so-called slope framework in the form of a lattice of beam-shaped concrete structures. In such a case, the formworks 1.1 will be assembled in a crosswise manner at the intersection of the legal frames. In addition, the thickness of each side of the frame varies depending on the construction conditions.The formwork 1 used in the construction site is manufactured as a fixed object with a length suitable for transportation, so at the site, It is then cut to the required length or added to the required length, and then assembled to the predetermined dimensions. In addition, when constructing a legal framework as shown in Figure 3, the anchor 7 facility is driven into the ground at the intersection of the legal framework, or in the case of hard ground, holes are drilled with a drilling machine and anchor bolts, etc. Insert it to connect it with the ground. Also,
Anchor 7 is the above idiot 1t71. As shown in Figure 3, the upper shaft bar 2.21rA passes through the intersection.
It is also possible to connect the formwork 1.1 and the ground 4 by erecting an anchor connecting member 6 and connecting the anchor 7 thereto.

In this way, since the anchor 7 is supported by the connecting member 6, a reliable resistance force can be obtained regardless of the size of the frame.

Note that the present invention is not limited to the above-mentioned legal framework;
For example, it can be widely applied to concrete structures such as beam-shaped or column-shaped structures that reinforce sloped ground.

tlS5 and 6 respectively show embodiments of the pond of the formwork 1 in the present invention, and the mesh body 3 of the formwork 1 is
As shown in the figure, a combination of upright members 3a and diagonal members 3b may be used, or as shown in FIG. 6, diagonal members 3c and 3c may be formed in a net shape by intersecting each other.

In short, as long as the mesh body 2 of the formwork 1 is capable of connecting the shaft reinforcements 2.2, acting as shear reinforcing bars, and preventing the poured concrete 8 from flowing out, the structure itself is suitable. There is no limit to the number of ships.

Further, FIG. 7 shows still another embodiment of the formwork 1, in which the formwork 1 does not place the shaft reinforcement 2.2 and the mesh body 3 on the same plane, but from the mesh body 3. The axial reinforcements 2.2 are positioned at intervals in the transverse direction of the plane. In this case, the net-like body 3 is formed without the axial reinforcement 2.2, and the axial reinforcement 2.2 is formed separately from the net-like body 3.

That is, the axial reinforcement 2.2 is formed by integrally connecting its upper and lower ends with a large number of connecting reinforcements 9.9 made of U-shaped thin fiber bundles bent in the same direction. Then, as shown in the figure, attach the connecting bars 9.9 to the mesh body 3 and use PA fat! ! Binding material 10 such as wire rod
．． 10. In the formwork 1 of this embodiment, as shown in Figure tjSB, when the formwork 1.1 is assembled, the shaft reinforcement 2.2 can be positioned considerably inward from the mesh body 3.3. Therefore, since the shaft reinforcement 2.2 is buried sufficiently deep from the surface of the poured concrete 8, there is no problem even if the concrete cover of the mesh body 3.3 is small, so that the formwork 1, Concrete 8 to 1 room
After the pouring of the formwork (1.1M)
It becomes possible to reduce or omit the spraying of t, which makes it possible to simplify layer construction and reduce costs.

As shown in this embodiment, the formwork 1 in which the shaft reinforcement 2.2 can be positioned outside the mesh body 3 is shown in FIG.
An example shown in FIG. 10 can also be considered. That is, the example in FIG. 9 is
The net-like body 3 is bent in such a manner that its upper and lower parts protrude inwardly 11.11, and an axial reinforcement 2.2 is integrally connected to the protruding end thereof. In addition, in the example shown in FIG.
The shaft reinforcement 2.2 is located in the middle of the two.

FIGS. 11 and 12 show still another embodiment of the formwork, in which the shaft reinforcement 2.2 is formed separately from the mesh body 3 and is connected with the binding material 10.10. This embodiment is similar to the embodiment shown in FIG. 7, but in this embodiment, the opposing lower axial reinforcements 2.2 are integrally connected by a thin horizontal reinforcement 13.13.

In this example, when assembling the formwork 1.1, the shaft reinforcement 2
．． There is no need for a temporary stopper 5 to connect the molds 1.1 to each other, and the formwork 1.1 can be assembled more efficiently.

In each of the embodiments described above, two shaft reinforcements 2 are provided at the upper and lower sides, but the number of shaft reinforcements 2 can be increased or decreased as appropriate.

〔Effect of the invention〕

As explained above, the earth reinforcement structure of the present invention integrates the shaft reinforcement and the net-like body using a fiber bundle made of lightweight, high-strength fibers impregnated with a highly corrosion-resistant resin material. The method is characterized in that the formwork is formed by molding and hardening to form a formwork, the formwork is arranged in parallel on a slope, a concrete neck is poured between the formworks, and the formwork is buried in concrete. Since the formwork is also used as reinforcement,
Assembling the formwork can be done immediately with reinforcement, greatly simplifying the work of assembling the formwork and arranging the reinforcement.
Compared to conventional construction steel materials, it is arranged with a corner from the net in the direction transverse to the plane of the net and the shaft reinforcement and the net are connected by horizontal connecting reinforcements. Very! ! It is a plate, which greatly reduces work, especially on slopes where workability is poor, and enables efficient and inexpensive construction.

In addition, the buried formwork that also serves as reinforcement is corrosion-resistant, and almost no W491 material is required, so it is less susceptible to natural influences such as rainwater and artificial color pipes such as exhaust gas. There is no fear that the buried material will corrode and deteriorate the structure, and the structure can be stabilized over a long period of time.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, so Figure 1 is a cross-sectional view, Figure 2 is a cross-sectional view seen from the side of Figure 1, and Figure #S3 is a plan cross-section showing the state of the facility of the legal frame according to the present invention. Figure, fjS4
The figure is a perspective view showing one embodiment of the formwork used in the present invention, FIGS. 5, 6, and tjST diagrams are respectively perspective views showing other embodiments of the same formwork. A sectional view and fJSS diagram showing a construction example using the formwork, Fig. 10 is a slope view showing another example of the same formwork, and Fig. 11 is an example in which shaft bars of opposing formworks are integrally connected to each other. FIG. 12 is a sectional view showing a construction example using the same formwork. 1... Formwork 2... Axial reinforcement 3... Reticular body 4... Earth 7... Anchor, 8
...Concrete 9...Connection bar Fig. 1 Fig. 3

Claims (4)

[Claims] (1) Using a fiber bundle made of lightweight, high-strength fibers impregnated with a highly corrosion-resistant resin material, the shaft reinforcement and the net-like body are integrally molded and hardened to form a formwork. A ground reinforcement structure characterized in that formwork is arranged in parallel on the slope ground, concrete is cast between the formworks, and the formwork is buried in the concrete. (2) Using fiber bundles made of lightweight, high-strength fibers impregnated with a highly corrosion-resistant resin material, the axis of thick fiber bundles and the network of thin fiber bundles are integrated by crossing each fiber bundle. A formwork used for ground reinforcement structures, which is characterized by being specially formed and hardened. (3) Axial bars, which are reinforcing bars for concrete, are arranged at intervals from the plane of the net-like body forming the formwork plate, and are integrated via connecting bars that connect the said axis bars and the net-like body. The formwork according to claim 2, characterized in that the formwork is (4) The formwork according to claim 3, wherein the axial reinforcements of the opposing formworks are integrated through transverse reinforcements that connect them.