JPH11200658A - Modification lining method and modification lining structure for wall of concrete building frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lining method for the wall of a concrete building frame, capable of showing permanently excellent anticorrosion and allowing simple construction at a lower cost. SOLUTION: Mortar 11 is applied to the wall 2 of a concrete building frame to form a frame mount 10 and a thermoplastic hard synthetic resin panel supporting frame 30 is fixed to the frame mount 10 with a concrete nail 12. A lining panel 20 formed of the same material as that of the panel supporting frame 30 is welded at both edges thereof to the panel supporting frame 20, lining material including concrete is filled between the wall 1 of the concrete building frame and the lining panel 20 to be cured and hardened in the condition that the lining panel 20 is restrained to the wall of the building frame by a temporary restraining means 41 and then the temporary restraining means 41 is withdrawn.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a repair lining method and a repair lining structure for a concrete frame wall in a concrete liquid tank such as a sewage or sludge accumulation tank.

[0002]

2. Description of the Related Art Liquid tanks such as sewage treatment tanks are generally constructed of reinforced concrete and are buried underground and installed. Due to the effects of volatile components from sewage and the like stored in the inside thereof, particularly sulfuric acid and other oxide components generated by bacteria, such a liquid tank causes internal corrosion within a short period of time, which is more than expected, and A situation occurs in which the structure is broken and the structural strength is impaired.

[0003] Accordingly, it is strongly recommended that a concrete liquid tank or the like which has been corroded as described above is repaired later for safety and desirably, the corrosion can be prevented permanently thereafter. It has been demanded.

Under such circumstances, a number of lining panel construction methods have conventionally been proposed in which a large number of hard synthetic resin lining panels are fixed to the wall surface of the concrete frame to be renovated via a new concrete layer. Have been.

For example, in the lining panel method disclosed in Japanese Patent Application Laid-Open No. 8-34017, a large number of panel mounting metal frames provided with a plurality of panel locking openings at predetermined intervals along the length direction are used. A technique for constructing a lining panel using the lining panel is disclosed. In this method, anchor bolts are fixedly planted on the concrete skeleton wall to be rehabilitated, and using the anchor bolts, the large number of metal frames are attached along the concrete skeleton wall,
Attach vertically at predetermined intervals in the horizontal direction.
Then, by locking the lining panel to the predetermined panel locking opening of each metal frame,
After arranging a large number of lining panels in a plane at a predetermined distance from the concrete skeleton wall surface, each lining panel is held in a state where the lining panels are suppressed to the concrete skeleton wall surface side by temporary restraining means.

In the restrained state, the space between the concrete skeleton wall surface and the lining panel is filled with concrete, the concrete is cured and hardened, and then the temporary restraining means is removed.

[0007] In this lining panel method, since the repaired surface is covered with the lining panel made of a hard synthetic resin, it is possible to obtain a permanently excellent anticorrosion property.

[0008]

However, in the conventional lining panel construction method described above, the metal frame for supporting the lining panel has a large number of openings for locking the lining panel at predetermined intervals along its length. Since the metal frame has a very complicated shape in which the portions are formed, it takes time and effort to manufacture a metal frame having such a complicated shape, which causes a problem that the cost is increased.

In the above-mentioned lining method, when the lining panel is fixed to the metal frame, it is necessary to perform a troublesome work of accurately locking a predetermined portion of the lining panel into the opening of the metal frame. Had the problem of being difficult.

[0010] The present invention can solve the above-mentioned problems of the prior art, and can obtain excellent corrosion protection permanently.
It is an object of the present invention to provide a repair lining method and a repair lining structure for a concrete skeleton wall which can be easily constructed and reduce costs.

[0011]

In order to achieve the above-mentioned object, a method for repairing and lining a concrete skeleton wall according to the present invention comprises forming a frame mounting base by applying a smooth finishing material to a predetermined area of the concrete skeleton wall, By fixing a plurality of panel supporting frames made of a long thermoplastic hard synthetic resin molded product to the frame mounting base with fixing members, the panel supporting frames are vertically arranged at predetermined intervals in the horizontal direction along the concrete skeleton wall surface. Then, a plurality of lining panels, each having a buried fixing piece protruding on the back side and made of the same type of thermoplastic hard synthetic resin as the panel support frame, are joined at both side edges thereof to the panel support frame by welding or bonding. Thus, the plurality of linings arranged in a plane at a predetermined interval from the concrete skeleton wall surface, The panel is held in a state where it is restrained on the side of the concrete skeleton by the temporary restraint means. In the holding state, a backing material such as concrete is placed in the space between the concrete skeleton wall and the lining panel. The gist is to fill and fill the embedded fixing pieces with a filling material so as to cure and harden the backing material, and then remove the temporary restraining means.

In the modified lining method of the present invention,
Since the skeleton wall surface is covered with the lining wall composed of the lining panels made of a hard synthetic resin in a planar arrangement, it is possible to obtain a permanently excellent anticorrosion property.

Further, since the lining panel can be fixed to the panel support frame by welding or bonding, it is troublesome to lock a predetermined portion of the lining panel at a predetermined position of the metal frame as in the related art. The lining panel can be fixed more easily than in the case.

Further, the panel supporting frame is made of a long resin molded product, and can be easily manufactured by extrusion molding or the like.

In the method of the present invention, it is preferable that a mortar is used as the smooth finishing material and a concrete nail is used as the fixing tool.

That is, in this case, since the panel supporting frame can be fixed on the frame mounting base by nailing, for example, when anchor bolts or the like are fixedly implanted for fixing the metal frame as in the related art. As compared with the above, the panel supporting frame can be fixed easily and reliably.

On the other hand, in the modified lining structure of the concrete skeleton wall of the present invention, a frame mounting base made of a smooth finishing material is formed in a predetermined region of the concrete skeleton wall, and a plurality of long thermoplastic hard synthetic resin molded products are formed. The panel support frames are fixed to the frame mounting base by fixing tools, respectively, so that the panel supporting frames are vertically arranged at predetermined intervals in the horizontal direction along the concrete skeleton wall surface, and embedded fixing pieces project from the back side. A plurality of lining panels made of the same kind of thermoplastic hard synthetic resin as the panel supporting frame are provided, and both side edges thereof are joined to the panel supporting frame by welding or bonding, so that a predetermined number of lining panels are formed from the concrete skeleton wall surface. The plurality of lining panels arranged in a plane at intervals and arranged in a plane The between the concrete framework wall Urakomi material such as concrete is cured filled, it is summarized as that the fixedly embedded pieces therein Urakomi member is formed by fixedly embedded.

This modified lining structure specifies a structure obtained by performing the above-mentioned modified lining method.

In the present invention, if the lining panel and the panel supporting frame can be fixed to each other by welding or bonding, they are made of the same kind of material.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a modified lining method according to an embodiment of the present invention will be described with reference to the drawings.

First, the configurations of the lining panel (20) and the panel support frame (30) used in the method of this embodiment will be described.

As shown in FIGS. 1 and 8, the lining panel (20) is formed of a molded article of a thermoplastic resin such as a hard vinyl chloride resin, a polyethylene resin, or polyvinylidene fluoride. This lining panel (20)
Has a plate-shaped panel body (21) and a plurality of embedded fixing pieces (22) integrally formed in a protruding manner on the back surface thereof.

In this embodiment, the embedded fixing piece (22)
Is a hook-like member that extends in the direction of the back surface of the panel body (21) and is bent laterally. The hook-like shape is continuous in the up-down direction and is arranged at predetermined intervals in the width direction. Of course, in the present invention, the arrangement state and shape of the buried fixing pieces (22) are not limited.

On the other hand, as shown in FIG. 1, the panel support frame (30) is made of a long resin molded product having a rectangular cross section obtained by extrusion molding, and is made of the same material as the lining panel (20), namely, It is made of a thermoplastic hard synthetic resin such as a hard vinyl chloride resin.

In the present embodiment, as described below, the repair work of the wall surface of the concrete body such as the sewage treatment tank is performed by using a large number of the lining panels (20) and the panel support frames (30) having the above-described configurations. Things.

First, as shown in FIGS. 1 and 2, in the tank to be repaired, the wall (2) of the corroded concrete skeleton (1) is often in a rough state. After removal using a suitable scraping tool or the like, the surface is subjected to substrate adjustment.

Next, a smooth finishing material (11) such as mortar is applied to the wall surface (2) at predetermined intervals in the horizontal direction so as to be continuous in the vertical direction. Then, by curing the smooth finishing material (11), a plurality of frame mounts (10) continuous in the vertical direction are formed at predetermined intervals in the horizontal direction. In addition, each frame mounting base (10)
The base surfaces are finished flat, and each base surface is finished so as to be arranged in a vertical plane parallel to the body wall surface (2).

Next, as shown in FIGS. 1 and 3, a panel supporting frame (30) is arranged on each frame mount (10), and in that state, the panel supporting frame (30) is placed.
To the frame mount (1) with concrete nails (12).
0).

Thus, a large number of panel supporting frames (3
0) are vertically arranged at predetermined intervals in the horizontal direction along the frame wall surface (2).

Subsequently, as shown in FIGS. 1 and 4, the lining panel (20) is connected to the adjacent panel support frame (3).
0), and lining panel (2
The resin material (51) of the same material as the panel (20) and the frame (30) is melted and solidified between the both side edges of the back surface side of (0) and the corresponding panel support frame (30), Connect both side edges of the panel (20) to the frame (3
0) is fixed by welding.

Thus, a large number of panel supporting frames (3
0), a plurality of lining panels (2
0) are arranged side by side in the vertical direction, and as shown in FIG. 5, a large number of lining panels (20) are formed in a plane parallel to the wall (2) at a predetermined distance from the wall (2) of the concrete frame. Deploy.

When the lining panel (20) is welded to the panel support frame (30), the materials of the panel (20) and the frame (30) are melted without using a resin material (51) such as a welding rod. It is also possible to solidify.

Next, as shown in FIGS. 1 and 6, a restraining panel (41) made of veneer plywood or the like is arranged so as to overlap almost the entire surface of the lining panel (20) arranged in a plane. Then, a restraining bar (not shown) is assembled to the restraining panel (41) to form a large number of lining panels (2).
0) is held so as to be pressed against the concrete skeleton wall surface (2) side.

As means for assembling the restraining bar to the restraining panel (41), for example, an anchor bolt may be fixedly planted on the bottom surface or the like, and the restraining bar may be fixed appropriately using the anchor bolt as a fulcrum. However, in the present invention, the fixing method of the temporary restraining means such as the restraining bar is not particularly limited, and may be fixed by any method.

Thus, the lining panel (20) is provided by the temporary restraining means such as the restraining panel (41) and the restraining bar.
Of the concrete skeleton (1) and the lining panel (2) in a state where the
A backing material (5) such as concrete is cast in the space between the above (0). At this time, the embedded fixing piece (22) of the lining panel (20) is embedded inside the backing material (5).

Subsequently, as shown in FIG. 7, after the backing material (5) has cured and hardened, the restraining bar and the restraining panel (4) are cured.
Remove temporary deterrence measures such as 1).

Thereafter, the adjacent lining panels (2
0), the gap between the panel (20) and the frame (30)
The resin material (52) of the same material is melted and solidified and welded to fill the space between the lining panels (20).

Thus, the repair work of the concrete skeleton wall surface (2) in this embodiment is completed, and the repair lining structure in this embodiment is formed.

As described above, according to the lining method of this embodiment, the skeleton wall (2) is covered with the lining wall composed of the group of lining panels (20) made of hard synthetic resin in a planar arrangement. Therefore, it is possible to obtain excellent corrosion protection permanently, and the lining wall can have excellent surface smoothness. And the flow-down characteristics can be improved.

Further, the panel support frame (30) can be easily fixed by nailing on the frame mounting base (10) formed by mortar coating.
For example, the mounting of the panel support frame (30) and the construction work can be easily performed as compared with the conventional case where the anchor bolt is fixedly planted and the metal frame (panel support frame) is fixed to the bolt.

Furthermore, in the present embodiment, the lining panel (20) is fixed by welding to the panel support frame (30). Since it does not require the troublesome work of locking in position,
Construction work can be performed easily.

Moreover, the panel support frame (30) of the present embodiment is made of a long resin molded product having a rectangular cross section, and can be easily manufactured by extrusion molding, so that mass production is possible and cost reduction is possible. Can be planned.

In the above embodiment, when the panel supporting frame (30) is made of a conductive material obtained by mixing, for example, carbon powder or metal powder into the material thereof, about 50 KV is required. Pinhole check of the welded part by the high voltage generator becomes possible. That is, if there is no defective portion such as a pinhole in the welded portion, the discharge light from the high-voltage generator is applied to the lining panel (20).
However, if there is a defective portion, the discharge light is discharged to the panel support frame (30) through the defective portion, so that the position of the defective portion can be easily and accurately specified. Therefore, it is possible to quickly and appropriately repair a defective portion, and to form a highly complete lining wall.

In the above embodiment, the lining panel (20) is fixed to the panel support frame (30) by welding. However, the present invention is not limited to this, and the lining panel (20) is fixed using an adhesive. May be.

[0045]

As described above, according to the repair lining method of the concrete frame wall of the present invention, the rigid synthetic resin panel support frame is fixed on the frame mounting base formed by coating the smooth finishing material. After fixing the hard synthetic resin lining panel to the frame by welding or bonding, between the lining panel and the concrete skeleton,
Because the backing material such as concrete is filled and hardened, the skeleton wall is covered with a lining wall made of a group of lining panels made of hard synthetic resin in a planar arrangement, so that it is possible to obtain permanent excellent corrosion protection. Can be. Further, the lining panel can be easily fixed to the panel support frame by welding or bonding, so that the construction work can be easily performed. Further, the panel support frame is made of a long resin molded product, and can be easily manufactured by extrusion molding or the like, and has an effect that cost can be reduced.

In the present invention, when mortar is used as a smoothing finish and concrete nails are used as fasteners, the panel supporting frame can be easily fixed to the frame mounting base by nailing. Therefore, there is an advantage that the repair work can be performed more easily.

On the other hand, the modified lining structure of the concrete skeleton wall of the present invention specifies the structure obtained by performing the above-mentioned modified lining method, and the same effects as described above can be obtained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a modified lining structure constructed by a construction method according to an embodiment of the present invention.

FIG. 2 is a horizontal cross-sectional view showing a state immediately after a smooth finishing material is applied in the method of the embodiment.

FIG. 3 is a horizontal sectional view showing a state immediately after a panel support frame is attached in the method of the embodiment.

FIG. 4 is a horizontal sectional view showing a state immediately after a predetermined lining panel is attached in the method of the embodiment.

FIG. 5 is a horizontal sectional view showing a state immediately after all lining panels are attached in the method of the embodiment.

FIG. 6 is a horizontal sectional view showing a state immediately after filling a backing material in the method of the embodiment.

FIG. 7 is a horizontal sectional view showing a modified lining structure of the embodiment.

8A and 8B are diagrams showing a lining panel applied to the embodiment, wherein FIG. 8A is a rear view, FIG. 8B is a side view, and FIG. 8C is a plan view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Concrete frame 2 ... Frame wall 5 ... Backing material 10 ... Frame mounting base 11 ... Mortar (smooth finishing material) 12 ... Concrete nail (fixing tool) 20 ... Lining panel 22 ... Embedded fixing piece 30 ... Panel support frame 41 ... Deterrence panel (temporary deterrence means)

Claims (3)

[Claims] 1. A frame mounting base is formed by applying a smooth finishing material to a predetermined area of a concrete skeleton wall, and a plurality of panel supporting frames made of a long thermoplastic hard synthetic resin molded product are mounted on the frame mounting base. By fixing them to the panel, they are vertically arranged at predetermined intervals in the horizontal direction along the wall of the concrete frame, and buried fixing pieces are protrudingly provided on the back side, and the same type of thermoplastic material as the panel supporting frame is used. A plurality of lining panels made of a hard synthetic resin are welded or bonded to the panel support frame at both side edges thereof, so that the lining panels are arranged in a plane at a predetermined distance from the concrete skeleton wall surface, and arranged in a plane. The plurality of lining panels thus provided are held in a state where they are restrained by the temporary restraint means on the side of the concrete skeleton wall, and the protection is performed. In the state, a backing material such as concrete is injected and filled in the space between the concrete body wall surface and the lining panel so as to embed the embedded fixing pieces by the backing material, and the backing material is cured and cured. The method for repairing a lining of a concrete skeleton, wherein the temporary restraining means is removed after the lining is completed. 2. The method according to claim 1, wherein a mortar is used as the smooth finishing material, and a concrete nail is used as the fixing tool. 3. A frame mounting base made of a smooth finishing material is formed in a predetermined area of a concrete body wall surface, and a plurality of panel support frames made of a long thermoplastic hard synthetic resin molded product are fixed to the frame mounting base. By being fixed respectively by the fixtures, they are vertically arranged at predetermined intervals in the horizontal direction along the concrete frame wall surface, embedded fixing pieces are protruded on the back side, and the same type of heat as the panel support frame. A plurality of lining panels made of a plastic hard synthetic resin are arranged in a plane at a predetermined interval from the concrete skeleton wall by joining both side edges of the lining panels to the panel support frame by welding or bonding. A backing material such as concrete is provided between the plurality of lining panels and the concrete skeleton wall. A modified lining structure for a concrete skeleton wall, wherein the lining material is filled and hardened, and the buried fixing piece is buried and fixed inside the backing material.