JPH0412149Y2 - - Google Patents

Description

[Detailed description of the invention] a. Industrial application field The present invention relates to a propulsion hume tube.

b. Prior Art Huyum pipes are generally used as concrete pipes for the propulsion method. Huium pipes are reinforced with reinforcing bars and the concrete is sufficiently compacted by centrifugal force, so they are dense, highly watertight, and have high strength.

Conventionally, propulsion hume tubes have been designed with impact resistance,
In order to improve wear resistance, concrete pipes are reinforced by rigidly connecting resin concrete pipes to both ends.

c Problems to be solved by the invention However, in such propulsion fume pipes, because the expansion rates of the concrete pipe and the resin concrete pipe are different, the problem arises that the contact surfaces may separate due to temperature changes, etc. Ta.

If separation occurs between the concrete pipe and the resin concrete pipe section, there will be an inconvenience that leaks will occur from the gap into the inside and outside of the pipe.

d. Means for solving the problem The present invention is an attempt to solve the above problem, and its gist is to provide a propulsion fume pipe in which resin concrete pipe parts are rigidly connected to both ends of a concrete pipe. , the propulsion fume pipe is provided with a leakage prevention means at a joint between the concrete pipe and the resin concrete pipe portion.

The concrete pipe used in this invention is a reinforced concrete pipe compacted and formed by centrifugal force.
What was traditionally used as sewage pipes, etc.
It can be applied as is.

Ordinary resin concrete can be applied as is to the resin concrete pipe section. Resin concrete generally uses resin as a binder.
This is a pipe in which aggregate is bonded using chisel, and no Portland cement is used. In this invention,
Select the type of resin and aggregate to be used depending on the purpose of use of the propulsion hume tube. That is, a liquid resin such as unsaturated polyester, epoxy, furan, or polyurethane can be used as the resin, and river gravel, river sand, crushed stone, etc. can be used as the aggregate. Furthermore, fillers such as cement, calcium carbonate, and silica can also be added to this.

In the propulsion fume pipe of the present invention, the resin concrete pipe portions may be provided at both ends of the concrete pipe with a width of, for example, about 10 to 40 cm at each end.

The rigid connection means for joining or connecting the concrete pipe and the resin concrete pipe section is not particularly limited, and methods commonly used in the art can be applied. For example, there is a method of using anchor reinforcing bars. Another method is to fit a collar with an anchor ring on the inner surface to the outer periphery of the joint between the concrete pipe and the resin concrete pipe.

In the propulsion fume pipe of the present invention, the concrete pipe and the resin concrete pipe section may be directly joined, or another member such as a resin may be interposed between the connecting surfaces of the concrete pipe and the resin concrete pipe section. You can leave it there.

In the present invention, leakage prevention means both preventing the liquid flowing inside the hume tube from flowing out of the tube and preventing the liquid outside the hume tube from flowing into the tube.

The leak prevention means of the present invention has the following aspects.

When directly connecting a concrete pipe and a resin concrete pipe section by rigidly connecting them with an anchor, a stretchable resin is interposed between the connecting surface of the concrete pipe and the connecting surface of the resin concrete pipe section. According to this leakage prevention means, even if the gap between the concrete pipe and the resin concrete pipe section widens due to the difference in their expansion rates, the resin expands and spreads throughout the gap, allowing water to flow inside the pipe. will not flow out of the pipe.

When a concrete pipe and a resin concrete pipe section are rigidly connected by a collar joint having anchor reinforcement, swellable rubber is interposed between the concrete pipe and the collar joint, and between the resin concrete pipe section and the collar joint. According to this leakage prevention means, even if a gap is created between the concrete pipe and the resin concrete pipe section and water flows into this gap, the water flowing in is dammed up by the swellable rubber interposed therebetween.

A joint is formed at the joint between the concrete pipe and the resin concrete pipe to release expansion, contraction, and vibration, and a joint sealant for leakage prevention is filled in the joint. According to this means, the joint sealant prevents water from flowing out within the pipe.

A water stop band is buried at the joint between the concrete pipe and the resin concrete pipe. The water stop band has good adhesion to concrete and resin concrete, and has a valve action (the water stop band deforms due to movement of concrete and water pressure action, maintaining watertightness), so this leak prevention means is effective. This can prevent water from flowing out of the pipe.

A void is formed in the connecting surface of the resin concrete pipe section, and water-swellable rubber is placed in this void.
According to this leakage prevention means, when water enters the gap, the water-swellable rubber swells and comes into close contact with the connecting surface of the concrete pipe, thereby preventing water from flowing out.

e. Effect In the propulsion fume pipe of the present invention, the concrete pipe and the resin concrete pipe section are rigidly connected using anchor bars, etc., but even so, the concrete pipe and the resin concrete pipe section have different expansion rates, etc. It may peel off.

However, even in such a case, the leakage prevention means provided at the connection between the concrete pipe and the resin concrete pipe prevents the liquid flowing inside the pipe from flowing out of the pipe and the liquid outside the pipe from flowing into the pipe. Ru.

f Example The present invention will be explained below based on the drawings.
The present invention is not limited thereto.

FIG. 1 is a sectional view of a propulsion fume pipe 1, in which the central part is formed of a normal concrete pipe 2, and resin concrete pipe parts 3,
3 are connected, and a collar 4 for connecting another propulsion fume tube 1 is attached to one end of the tube section.

FIG. 2 is a partial cross-sectional view showing a connecting portion between the concrete pipe 2 and the resin concrete pipe section 3 of the propulsion fume pipe 1 shown in FIG. The concrete pipe 2 and the resin concrete pipe part 3 are rigidly connected by an anchor 5 whose one end is buried in the concrete pipe 2 and the other end is buried in the resin concrete pipe part 3. A stretchable resin 7 is placed between the connecting surfaces 6 and 6.
is interposed.

In this propulsion fume pipe, the space between the connecting surfaces 6, 6 between the concrete pipe 2 and the resin concrete pipe part 3 is widened due to the difference in expansion rate or external force due to the interposed elastic resin 7. Even in this case, the resin 7 expands and fills the gap between the connecting surfaces 6, 6, so that water will not flow out from this gap.

FIG. 3 is a partial sectional view of a propulsion hume tube with another leakage prevention means. In the propulsion fume pipe 1 of this embodiment, a concrete pipe 2 and a resin concrete pipe part 3 are connected by an anchor 5,
Further, the concrete pipe 2 and the collar joint 8 are connected by anchor rings 9, 9, and the concrete pipe 2 and the collar joint 8 are connected by anchor rings 9, 9. Swellable rubber 10 is interposed in the joint 8 and in the gap between the resin concrete pipe portion 3 and the collar joint 8 as leakage prevention means.

In the propulsion fume pipe of this embodiment, even if the gap between the connecting surfaces 6, 6 between the concrete pipe 2 and the resin concrete pipe section 3 becomes large, water passing through this gap will be absorbed by the swelling rubber 10, 10. Since the pipe is dammed by the pipe, the water inside the pipe will not flow out of the pipe.

FIG. 4 is a partial cross-sectional view of the propulsion fume pipe 1 provided with yet another water-stopping means.

The propulsion fume pipe 1 of this embodiment has joints 11, 11 formed at the connecting part between the concrete pipe 2 and the resin concrete pipe part 3, and the joints 11, 11 are provided with water-stop properties as a leakage prevention means. A certain type of joint filler 12, 12 is filled. This joint sealant prevents water from flowing inside the pipe and water from flowing outside the pipe.

Figure 5 shows a water stop band 1 as a leak prevention means.
FIG. 3 is a partial cross-sectional view of a propulsion hume tube 1 using No. 3.

In the fume pipe of this embodiment, the concrete pipe 2 and the resin concrete pipe part 3 are connected by anchors 5, 5, and a water stop band 13 is used as a leakage prevention means, similar to the fume pipe of the first embodiment. This is what is being done. One end 14 of the water stop band 13 is buried in the concrete pipe 2, and the other end 15 is buried in the resin concrete pipe section 3.

According to the propulsion fume pipe of this embodiment, the water stop band 13 is in close contact with the concrete and resin concrete and acts as a valve, so even if the connecting surfaces 6, 6 are separated, the water inside the pipe will not flow out. do not have.

Figure 6 shows water-swollen rubber 1 as a leakage prevention means.
6 is a partial cross-sectional view of a propulsion hume tube 1 using

Similar to the hume pipe of Example 1, the hume pipe 1 of this embodiment has a concrete pipe 2 and a resin concrete pipe portion 3 connected by anchors 5, 5, and a connecting surface with the resin concrete pipe portion 3. A void 17 is formed in 6, and a water-swellable rubber 16 is disposed in this void 17.

In the propulsion fume tube 1 of this embodiment,
When water in the pipe enters the gap 17 formed in the connecting surface 6 of the resin concrete pipe section 3, the rubber 16 swells until it comes into close contact with the concrete pipe, and the gap between the concrete pipe 2 and the resin concrete pipe 3 is closed. , water is prevented from flowing out of the pipe.

g. Effects The propulsion fume tube of the present invention is provided with a leakage prevention means, so that the liquid flowing inside the tube is prevented from flowing out of the tube, and the liquid flowing outside the tube is prevented from flowing into the tube.

According to the present invention, the conventional problems with humid pipes reinforced with resin concrete pipe sections are solved.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of a propulsion hume tube according to the present invention, and FIGS. 2 to 6 are partial sectional views of the propulsion hume tube according to the present invention. In the figure, 1...propulsion fume pipe, 2...concrete pipe, 3...resin concrete pipe section, 4...
...Color, 5...Anchor, 6...Connection surface, 7...
... Resin, 8 ... Color joint, 9 ... Anchor ring, 10 ... Swellable rubber, 11 ... Joint part, 1
2...Glut sealant, 13...Water stop band, 16...Water-swellable rubber.

Claims (1)

[Scope of utility model registration request] A propulsion fume pipe formed by rigidly connecting a resin concrete pipe section to both ends of a concrete pipe, characterized in that a leakage prevention means is provided at a joint between the concrete pipe and the resin concrete pipe section. tube.