JP2920851B2 - Repair method of concrete wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing a concrete wall of an inner peripheral wall of an aged water channel or the like.

[0002]

2. Description of the Related Art As is well known, methods for repairing the inner peripheral wall of an aged waterway include spraying concrete onto an existing concrete wall, applying mortar, spraying resin mortar, adding polymer concrete or steel fiber concrete, Pipe-in-pipe made of reinforced plastic composite pipes or cast iron pipes, special foam material that is impregnated with resin and thermoset, and steel plate processed into required shape and welded on site to form a pipe on the inner circumference A steel sheet lining method and the like are known.

[0003]

[SUMMARY OF THE INVENTION However, in the conventional repair method, either, poor workability, waterways sectional greatly decreases greatly reduced gone by passing water, the inner surface of the crude There is a problem that the degree coefficient increases, the abrasion resistance is not enough and the durability is poor,
It has been desired to provide an effective repair method.

[0004]

SUMMARY OF THE INVENTION In view of the above circumstances, a first aspect of the present invention provides a panel made of resin concrete on an existing wall surface.
A new wall is formed by attaching the new wall and the existing wall.
Injecting backfill material with self-hardening into the gap between
Repairs existing concrete walls on the inner peripheral wall of waterways, etc.
First, a positioning tool is placed on the bottom of the existing wall.
Install and position the resin
Install the bottom panel made of concrete, and then
Position the gin concrete panel with other positioning tools.
Arrange and attach and connect the panels
And seal them between the panels.
A new wall is formed by interposing, and between this new wall and the existing wall
Is characterized by injecting a self-hardening backfill material into the voids .

[0005] The invention according to claim 2 is a method for registering an existing wall.
A new wall is formed by attaching concrete panels
The gap between this new wall and the existing wall has self-hardening
By injecting backfill material,
A method for repairing a REIT existing wall, first Rejinko
By connecting concrete pillars with each other
Assemble the shape along the existing wall and inside the existing wall
And the gap between the support and the existing wall
Is adjusted by the spacers and connected to the support
Therefore, a resin concrete bottom
Attach the outer panel and then the other resin concrete
Panels from the support and the bottom panel
A new wall is formed by connecting each other, and this new wall
Backfill material with self-hardening in the gap between the surface and the existing wall
It is characterized by injection .

[0006]

Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment will be described with reference to FIGS. FIG. 1 shows a canal tunnel having a circular cross section repaired by the method of the present embodiment. Reference numeral 1 denotes an existing wall of aged concrete to be repaired, and 2 denotes a new wall provided inside the existing wall 1. The wall surface 3 is a backfill material injected into the gap between the existing wall surface 1 and the new wall surface 2 and solidified. The above-mentioned new wall 2 has a plurality of resin-concrete panels 4 which have been processed into a predetermined shape and size corresponding to the shape and size of the tunnel to be repaired. It is formed by being connected in directions. In this embodiment, since the tunnel has a circular cross section, the panel 4 (4a, 4b, 4c, 4d) in which the cylindrical surface is divided into six in the circumferential direction is employed.

The procedure for assembling each panel 4 in the tunnel is as follows. First, the bottom panel 4a is positioned and attached to the bottom of the tunnel using the positioning tool 5 as shown in FIGS. The positioning tool 5 is a steel plate-shaped plate curved in accordance with the curvature of the existing wall surface 1. Bolts 7 are passed through elongated holes 6 formed at both ends, so that the bottom of the tunnel is located at the bottom. A predetermined gap is secured between the positioning tool 5 and the existing wall surface 1 by a spacer bolt 8 provided on the back side and accurately positioned and fixed at a predetermined position.

The bottom panel 4a is positioned by supporting both ends of the bottom panel 4a on the positioning tool 5, and is supported by stoppers 9 provided at both ends of the positioning tool 5 for tunneling. The lower end of another panel 4b mounted and positioned on the inner side is positioned, and the upper end of the panel 4b is positioned by a positioning tool 10 shown in FIG. The positioning tool 10 has a disk 12 fixed to the head of a bolt 11 screwed into the existing wall surface 1.
As shown in FIG. 5, the corners of the four adjacent panels 4 are simultaneously positioned by appropriately adjusting the distance from the existing wall surface 1. Also, another panel 4c to be attached further up in the tunnel
As shown in FIG. 6, a hook 13 (positioning tool) fixed to the existing wall 1 is hooked with a locking metal 13 attached to the panel 4c in advance, and a nut is tightened. It is good to temporarily fix and position.

As described above, the panels 4 are sequentially assembled in the tunnel in the circumferential direction and the length direction,
2, 4 and 5, the panels 4 are connected to each other using a connecting plate (connecting tool) 20 and a fastening bolt 21 to form a new wall 2 inside the existing wall 1. A sealing material (not shown) is attached to a gap between the panels 4, and then the backfill material 3 is injected under pressure between the new wall surface 2 and the existing wall surface 1. As the backing material 3, a self-hardening material such as mortar or resin is used. When the backfill material 3 is injected, the backfill material 3 is filled in the entire gap by removing air from air holes formed at appropriate positions. At this time, the injection pressure of the backfill material 3 is applied to each panel 4, but since the resin concrete panel 4 itself has sufficient strength and is connected to form a circle, Thus, there is no possibility that each panel 4 bulges inward and is damaged.

When a predetermined time has elapsed after the injection, the backfill material 3
Then, the new wall surface 2 and the existing wall surface 1 are integrated and the repair is completed.

According to the above-mentioned method, the new wall surface 2 can be efficiently formed in a state where the new wall surface 2 is surely integrated with the deteriorated existing wall surface 1. Since the panel 4 made of resin concrete has sufficient strength of course be excellent in durability, water flow resistance increases after refurbishment since roughness factor of the surface is sufficiently small It is possible to minimize the reduction of the cross section due to the repair.

Incidentally, reference numeral 25 in FIG. 2, FIG. 4, and FIG.
Reference numerals 30 and 31 in FIG. 2 denote fixing plates attached to both the back side of each panel 4 and the existing wall surface 1. The new wall surface 2 and the existing wall surface 1 are firmly integrated via the backing material 3 by the anchors 30 and 31. Further, it is needless to say that the forms of the positioning tools 5, 10, the locking metal 13, the hook 14, the connecting plate (connecting tool) 20 and the like are not limited to the above-described embodiment and may be appropriately changed. Instead of the above-described positioning tool 5 shown in FIG. 2, a positioning tool 35 as shown in FIG. 7 is used to position one corner of the bottom panel 4a, or can be operated from inside the panel 4 as shown in FIG. The distance between each panel 4 and the existing wall surface 1 may be adjusted by a simple spacer bolt 36.

The first embodiment has been described above. Next, the second embodiment will be described with reference to FIGS. FIG.
Shows a waterway tunnel having a circular cross section repaired by the method of the second embodiment. In the second embodiment,
The same resin concrete panels 4 as those in the first embodiment are used, and the panels 4 are
Similarly, it is connected to a pillar 50 made of resin concrete.

As shown in FIG. 13,
The convex portion 51 formed at one end is fitted into the concave portion 52 formed at the other end, and is connected to each other by a fastening bolt 53 (see FIG. 12) so as to form an annular shape along the inner surface of the tunnel. Spacer bolts ( spacer ) 54 formed in advance on the connecting portion
(See FIGS. 11 and 12), the distance from the existing wall surface 1 is appropriately adjusted and arranged at a predetermined position in the tunnel. As shown in FIGS. 9 and 10, the columns 50 are arranged at intervals in the length direction of the tunnel, and each panel 4 is mounted between the columns 50. In the connecting portion of each support 50,
A holding plate 55 for positioning and fixing the panel 4 by sandwiching the end of the panel 4 is attached.

In the second embodiment, the pillar 50 is assembled in a ring shape in the tunnel and is built at a predetermined position, and is supported by the pillar 50 to first position and attach the bottom panel 4a to the bottom of the tunnel. Next, the panel 4 is attached to the inside of the existing wall surface 1 over the entire circumference by assembling while connecting the other panel 4 to the bottom panel 4 a and the column 50. Then, another column 50 is further erected on the near side of the panel 4 assembled in this way to form the new wall surface 2 sequentially in the length direction of the tunnel, and thereafter, as in the case of the first embodiment. By injecting a backfill material 3 having self-hardening property between the new wall surface 2 and the existing wall surface 1 under pressure, the new wall surface 2 and the existing wall surface 1 are integrated and the repair is completed.

Also in the second embodiment, since the columns 50 and the panels 4 made of resin concrete are used, the first embodiment is used.
The same effect as that of the embodiment can be obtained, and
0, the assembling strength of the new wall 2
The number can be increased more than in the embodiment, and the assembling work can be performed more efficiently.
If necessary, an anchor bolt or an earth anchor for anchoring the new wall surface 2 to the ground may be employed to fix the new wall surface 2 to the columns 50.

Although the first and second embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various design modifications and applications are possible. For example, the present invention can be applied not only to a waterway tunnel having a circular cross-section
16 can be applied to a horseshoe-shaped section as shown in FIG. 4 or a rectangular section as shown in FIG.
The present invention can be similarly applied to an open channel as shown in FIG. In that case, it goes without saying that the shapes and dimensions of the panels and the columns may be appropriately set according to the existing wall surface to be repaired. In addition, the present invention can be widely applied not only to the repair of the inner wall surface of a general tunnel but also to the repair of an aged concrete wall surface, not limited to a waterway. Further, when assembling the panels and the columns, no particular support is required by using the various positioning tools as exemplified above, but until the panels and the columns are connected, for example, as shown in FIG. Such a shoring 60 may be appropriately adopted as necessary.

[0018]

As described above in detail, according to the present invention, a new wall is formed inside an existing concrete wall by using a resin concrete panel alone or in combination with a column. The backfill material is injected into the gap between the new wall and the existing wall and solidified, so that the new wall and the existing wall are surely integrated, and the resin concrete panel is sufficient by itself. durable since they have such strength, also roughness factor of the surface is sufficiently small that the rather also as hydraulic resistance increases because it further, also cross-sectional reduction due renovation It has an excellent effect that it can be minimized. In the present invention, each panel
Is positioned by the positioning tool, and each panel is connected.
Connect with a tool, attach a seal material between each panel,
The columns are connected by fitting each other, and the
The gap between the support post and the existing wall is adjusted
Can be performed quickly, reliably and accurately.
Noh.

[Brief description of the drawings]

FIG. 1 is a perspective view of a waterway tunnel repaired by the method of the first embodiment of the present invention.

FIG. 2 is a partial front view of a positioning tool used in the same method.

FIG. 3 is a partial perspective view of the positioning tool.

FIG. 4 is a front view showing another positioning tool used in the method.

FIG. 5 is a partial elevation view showing a connecting portion between panels.

FIG. 6 is a front view of a hook and a hook used in the method.

FIG. 7 is a view showing another example of a positioning tool used in the same method.

FIG. 8 is a view showing an example of a spacer bolt used in the method.

FIG. 9 is a perspective view of a waterway tunnel repaired by the method of the second embodiment of the present invention.

FIG. 10 is a side sectional view of the tunnel.

FIG. 11 is a partial cross-sectional view showing a connecting portion of a column used in the method.

FIG. 12 is a partial cross-sectional view showing a connecting portion of the column.

FIG. 13 is a perspective view showing the shape of the end of the support.

FIG. 14 is a front sectional view showing a state in which a tunnel having a horseshoe-shaped section is repaired.

FIG. 15 is a front sectional view showing a state in which a tunnel having a rectangular section is repaired.

FIG. 16 is a front sectional view showing a state where repair is performed on the open channel.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Existing wall surface 2 New wall surface 3 Backing material 4 Panel 4a Bottom panel 5 Positioning tool 10 Positioning tool 14 Hook bolt (Positioning tool) 20 Connecting plate (Connecting tool) 35 Positioning tool 50 Prop 54 Spacer bolt (Spacer)

Continued on the front page (72) Inventor Kenji Koishihara 7-18 Yoshio-cho, Iizuka-shi, Fukuoka Prefecture Inside Aso Cement Co., Ltd. (72) Inventor Kazuo Sato 7-18 Yoshio-cho, Iizuka City, Fukuoka Prefecture Inside Aso Cement Co., Ltd. (56) References JP-A-64-17937 (JP, A) JP-B-27-2389 (JP, B1) (58) Fields investigated (Int. Cl. ⁶ , DB name) E21D 11/04

Claims (2)

(57) [Claims] 1. A panel made of resin concrete on an existing wall.
A new wall is formed by attaching the new wall and the existing wall.
Injecting backfill material with self-hardening into the gap between
Repairs existing concrete walls on the inner peripheral wall of waterways, etc.
First, a positioning tool is placed on the bottom of the existing wall.
Install and position the resin
Install the bottom panel made of concrete, and then
Position the gin concrete panel with other positioning tools.
Arrange and attach and connect the panels
And seal them between the panels.
A new wall is formed by interposing, and between this new wall and the existing wall
A method for repairing a concrete wall, characterized by injecting a self-hardening backfill material into the voids . 2. A panel made of resin concrete on an existing wall surface.
A new wall is formed by attaching the new wall and the existing wall.
Injecting backfill material with self-hardening into the gap between
Repairs existing concrete walls on the inner peripheral wall of waterways, etc.
First, the resin concrete struts are interconnected.
By fitting and connecting to the shape of the existing wall
Assemble and install inside the existing wall,
Adjust the gap between the column and the existing wall with the spacing tool
And connecting it to the support, the bottom of the existing wall
Attach the resin concrete bottom panel to the
Then, attach another resin concrete panel to the support
And the bottom panel
To form a new wall, and the space between this new wall and the existing wall
A method for repairing a concrete wall surface, which comprises injecting a self-hardening backfill material into a gap .