JPH0587606B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a temporary coffering method for inspecting and repairing a gate section of a water gate.

[Conventional technology]

Conventionally, various construction methods have been adopted for repairing the gutter section that guides the sluice gate. The first method is to close off the waterway 24 with sheet piles 31 and drain the water inside for repair, as shown in FIG.

The second method is described in Japanese Patent Application Laid-open No. 56-125535 and shown in FIG. 6, in which the waterway 24 is closed off by holding down the strip 34 into which water has been press-fitted with the struts 35.

Part 3 is described as a conventional example in Japanese Unexamined Patent Publication No. 16719/1984, and as shown in FIG.
4 is closed off with square timbers 38 using a cut-off construction method.

Part 4 is described in Japanese Patent Application Laid-Open No. 56-16719 as a conventional example, and as shown in FIG.
This construction method closes off the ends of 4 with floating gates 39.

Part 5 is described in Japanese Patent Application Laid-Open No. 16719/1983,
This is a method of repairing the water gate 30 by closing off the water gate 30 shown in FIG. 9 and the concrete surface 17 of the water gate with a closing member 40, forming a partial work space 41 on the upstream side of the water gate 30. be.

Step 6: With the water gate raised and the waterway open, a diver underwater removes the concrete from the gap formed in the door groove of the water gate, cuts the door stop hardware, installs the new door stop hardware, and performs secondary work. This is a construction method that involves constructing concrete forms and pouring concrete.

[Problem that the invention seeks to solve]

The first construction method shown in Figure 5 requires a long construction period (approximately 50 days), and the construction cost is enormous, and ships cannot navigate or pass water during this period.

Parts 2 to 5 shown in Figures 6 to 9
This construction method also does not allow the waterway to be used during construction, which is the same as construction method 1 above, and construction method 3 shown in Figure 7 cannot be applied to old water gates that do not have cut-off equipment.

Method 6 is also dangerous and cannot be carried out while the ship is sailing, so the work must be done at night when the ship is not sailing, resulting in poor work efficiency and safety and quality issues. There are management issues as well, as construction sites can only be seen by specially trained people who can dive. In particular, it is not possible to check the secondary concrete discharge area, and there is a risk of aggregate separation, and it is also necessary to protect door hardware etc. from ship collisions until the secondary concrete hardens. Furthermore, when draining water in each of the above-mentioned construction methods, the amount of drainage was large and it took a long time.

The present invention has been made in view of the above matters,
Inspection and inspection of the gate and groove section of the water gate, which allows the use of the waterway during construction and allows for safe and efficient construction.
The technical challenge is to create a construction method that can be repaired.

[Means for solving problems]

The present invention provides a sealing water stop material 2 on both sides and a lower part of a water stop plate 1, and brings the water stop plate 1 provided with the water stop material 2 into contact with the concrete surface 17 of the water gate.
This abutted water stop plate 1 is pressed against the concrete frame surface 17 using a pressure fitting 8 whose one end is fixed to the concrete frame 15 of the water gate to close off the underwater door groove 18 of the water gate, and then A temporary coffering method was adopted for the door groove of the water gate, in which the water in the door groove 18 is drained, and then the inside of the door groove 18 is inspected or repaired.

[Effect]

In the present invention, the water stop plate 1 provided with the water stop material 2 is brought into contact with the concrete surface 17 of the water gate, and the water gate part 18 of the water gate is closed by pressure-welding with the pressure fitting 8, and drainage inside the water gate part 18 is prevented. Do, and this door ditch part 18
Workers entered the building and inspected and repaired door hardware 20, etc. Further, the water channel 24 is used as usual even during inspection and repair work of the doorstop hardware 20 and the like.

〔Example〕

FIG. 1 and FIG. 2 are diagrams showing an implementation state of an embodiment of the present invention. First, the water gate door (not shown) is pulled up or removed from the water gate after being pulled up. next,
Support piece 11 on the concrete wall 16 of the water gate
If the supporting piece 11 is not attached, a diver drills a hole in the concrete wall 16 of the building frame, buries the anchor bolt 21, and attaches the support piece 11 as a preliminary work.

Then, a water stop material 2a made of a combination of wood, rubber, putty, etc. is attached to both sides of the water stop plate 1, and a water stop material presser 3 is placed in contact with the water stop material 2a to prevent the water stop material 2 from shifting. A water stop material 2b is attached to the bottom surface of the water stop plate 1 and is in contact with the bottom surface 25 of the water channel 24.
bury it.

Next, this water stop plate 1 is suspended by a lifting machine such as a crane using a hanging fitting 5, and brought into contact with the concrete surface 17 of the water gate. 9, Turnbuckle 10,
By the pressure fitting 8 consisting of the support piece 11,
The water stop plate 1 is pulled toward the concrete frame 15 side, the water stop plate 1 is brought into pressure contact with the concrete frame surface 17, and the underwater door groove part 18 of the water gate is closed off.

Next, the water in the door groove 18 is drained by the drain pump 26. Then, a worker enters the door groove section 18 where the water has been drained and inspects and repairs the door stop hardware 20. Then, in order to replace the door stop hardware 20, the concrete of the lifting part 19 is removed, a new door stop hardware 20 is installed, and it is fixed with concrete.

After the concrete has hardened, the pressure fitting 8 is removed, water is poured into the door groove 18, and the water stop plate 1 is removed, completing the repair of the door groove 18 on one side of the water gate.

FIG. 3 shows the lower part of the water stop plate 1 used in another embodiment, and hereinafter similar parts will be designated by the same reference numerals and explanations will be omitted.

This water stop plate 1 has a lower water stop material 2c and a water stop material 2a.
It is installed on the opposite side.

FIG. 4 shows the implementation state of another embodiment, in which the pressure fitting 8 is inserted into the embedded nut 13 and the bottle 12.
The embedded nuts 13 are embedded in the concrete surface 17 of the water gate structure, and the bottles 12 inserted through both sides of the water stop plate 1 are screwed into the embedded nuts 13, and the water stop plate 1 is attached to the concrete structure surface 17 of the water gate. The door groove portion 18 is closed by being pressed against the surface 17.

〔Effect of the invention〕

In the present invention, only the door groove part 18 of the water gate is closed off by the water stop plate 1, so that inspection and inspection of the door groove part 18 and
Even during repairs, the waterway 24 is not closed and can be used for water passage, boat navigation, etc.

In addition, since temporary cofferdams are partial, the construction period is shorter than that of full cofferdams, and large machines and materials are not required, resulting in lower construction costs.

In addition, compared to underwater work, repair work does not require special workers such as divers, and work efficiency is high.
No special mechanical tools required underwater
Since the work area is separated by water stop plates 1, work can be done safely and management is easy.

Furthermore, because the secondary concrete can be placed in a dry state, there is less separation of aggregate compared to underwater concrete.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an implementation state of one embodiment of the present invention, FIG. 2 is a side view seen from the - line, and FIG. 3 is a side view showing a part of an implementation state of another embodiment. FIG. 4 is a plan view showing an implementation state of another embodiment, and FIGS. 5 to 9 are views showing a conventional example. 1... Water stop plate, 2... Water stop material, 8... Pressure fitting, 15... Water gate frame concrete, 16...
Concrete wall of the water gate, 17... Concrete surface of the water gate, 18... Gate section of the water gate, 24...
...waterways.

Claims (1)

[Claims] 1 Water stop material 2 for sealing is provided on both sides and the bottom of the water stop plate 1, and the water stop plate 1 provided with this water stop material 2 is brought into contact with the concrete surface 17 of the water gate skeleton, and this contact is made. The water stop plate 1 is pressed against the concrete surface 17 of the water gate using a pressure fitting 8 whose one end is fixed to the concrete structure 15 of the water gate to close off the underwater door groove 18 of the water gate. A temporary coffering construction method for the door groove of a water gate in which drainage is performed and the interior of the door groove 18 is inspected or repaired.