JPS5930022Y2 - Seal device between structures - Google Patents

Description

[Detailed description of the invention] The present invention relates to a sealing device between a pair of structures connected with their end faces facing each other, and is particularly concerned with a sealing device between a hollow caisson through which a fluid flows, and in a landfill site. This invention relates to a sealing device between structures that is optimal for use as a sealing device between block-shaped caissons that isolate the sea side from the land side.

Conventionally, sealing devices between structures, such as seals used between caissons forming passages for cooling water, water supply and drainage in thermal power plants, etc., or seals used between caissons for reclaimed seawalls, are usually The structures are arranged in series with their end surfaces to be connected in contact with each other, and between the two structures,
This has been achieved by straddling a flexible member whose ends are each watertightly fixed to both structures.

However, in this type of sealing device between structures, the attachment of the flexible member to the structure is done on-site after the structure has been installed in a predetermined position, and due to space limitations and environmental reasons, such as underwater work. Due to reasons such as being subject to restrictions such as
There has been a problem in that attaching the sealing device to a structure is an extremely difficult task.

In order to overcome the problems that existed with the conventional sealing devices between structures mentioned above, the present invention proposes an inflatable sealing device attached to one end face of the structure before the structure is installed in position. A sealing device between structures in which a flexible member is attached, and after installation, the flexible member is inflated with a filler and pressed against the end face of the other structure, thereby easily achieving a seal between the structures. The purpose is to provide

An embodiment of the sealing device between structures of the present invention will be described below with reference to the drawings.

Figure 1 shows the state of the connecting end face of a structure consisting of a caisson 1 through which fluid flows, and the end face 1a of the periphery of the caisson, which requires watertightness, has a shape that follows the end face 1a of the caisson 1. A flexible member 2 is attached.

FIG. 2 shows a cross section of the caisson in the connection direction, and a pair of caissons 1, 1' to be connected are installed with their end faces 1a, 1a' facing each other.

Either caisson 1 of a pair of caisson 1, 1'
A flexible member 2 is attached to an end face 1a of the caissons 1 and 1', and the flexible member 2 is damaged by crushing when excessive relative displacement occurs between the caissons 1 and 1'. A groove-shaped recess 1 is formed as necessary on the end face 1a of the caisson 1 to prevent
b, and is attached to the recess 1b.

The flexible member 2 is made of an elastic material such as rubber or synthetic resin, and as clearly shown in FIG. It includes fixing parts 2b and 2b' extending outward from both ends.

Projected edges are formed at the ends of the fixed parts 2b, 2b' as necessary to prevent the fixed wood from being pulled out.

Inside the elastic material, if necessary, cloth, wire, etc. are embedded to form reinforcements (indicated by dotted lines in FIG. 3).

The fixing parts 2 b and 2 b' are fixed to the end face 1 a of the caisson 1, but this fixation is usually done by applying a contact plate 3 and using tightening means such as a dry pit or an anchor bolt/nut.

The shape of the backing plate 3 is not limited to that shown in the embodiments, and any shape can be used, such as a cross-sectional shape in which the --- piece presses the bent portion 2a.

This fixing is usually done in advance before installing the caisson 1 in a predetermined position, so that a large amount of space can be utilized.

In addition, since it is installed only on the caisson 1 side, that is, it is not installed across the pair of caissons 1 and 1' to be connected, there is no need for on-site installation to match the misalignment between the caissons 1 and 1'. .

When attaching the flexible member '2 to the end face 1a of the caisson 1,
A bent portion 2 of the flexible member 2 extends between the flexible member 2 and the caisson end face 1a and extends between the fixed portions 2b and 2b' of the flexible member 2.
A plate-like member 4 is provided which forms a space 5 between it and a.

The plate member 4 is made of an elastic material such as rubber or synthetic resin from the viewpoint of sealing performance, and is preferably made of the same material as the flexible member 2.

The plate member 4 includes a flexible member 2 and a fixing portion 2b of the flexible member 2,
At 2b', the plate-like member 4 is integrally connected in a liquid-tight manner by adhesion, baking, etc., and is formed into a bag-like shape as a whole.
may be integrally molded with the flexible member 2 to form a bag shape.

The space 5 is filled with a filling member 6 after the caisson 1 is installed at a predetermined position.

This filling may be done by any means, but
For example, as shown in FIG. 3, a sealable injection lower of the filling material 6 may be provided at the bent portion 2a of the flexible member 2, and the filling material 6 may be injected through this.

The filler 6 is a fluid, mainly a liquid, and preferably solidifies after being filled.

Specifically, tar urethane that maintains an elastic body after solidification is desirable.

By filling the filler 6, the bent portion 2a of the flexible portion 2 is brought into close pressure contact with the opposing caisson end face 1a, thereby ensuring a liquid-tight state between the caissons 1, 1', and completing the sealing device.

Fig. 4 shows a state in which the bent portion 2a is fully extended with the valley portion inverted, sealing the gap between the large caissons 1 and 1', and the gap between the opposing caissons 1 and 1'. When the caisson is small, the flexible member 2 is tightly pressed against the opposing caisson end face 1a in an intermediate state between the bent state before filling and the fully extended state.

FIG. 5 shows an example in which a fin-like tongue piece 2C is integrally formed on the bent portion 2a of the flexible member 2, and shows that the flexible member 2 may be formed in this way. There is.

When the tongue 2C is provided, one side of the tongue 2C is placed along the opposing caisson end surface 1a', so when pressure is applied from the other side of the tongue 2C, one side of the tongue 2C is The caisson end faces 1a' are pressed together by pressure such as water pressure, and the watertightness between the caissons 1 and 1' is improved accordingly.

In this embodiment, a tongue-like piece 2C is provided on the peak of the bent portion 2a, but the invention is not limited to this.
A plurality of tongue-like pieces 2C may be provided at appropriate intervals.

Further, the tongue-shaped piece 2C is not limited to the shape of the embodiment, but may have any cross-sectional shape as long as it is effective for sealing.

In the above explanation, the explanation was given to a hollow caisson through which fluid flows, but the sealing device of the present invention
The applicable structure is not limited to offshore caissons,
It goes without saying that the present invention can also be applied to a sealing device between block-shaped caissons used in the construction of reclaimed land such as the sea or river, which isolates the sea or river side from the land side, or a sealing device between structures of the same type.

When using the sealing device between structures according to the present invention, the following various effects can be obtained.

First, the sealing device of the present invention is designed to
Since it can be fixed only to one side and is not fixed directly to both structures, it is not necessary to align and attach it to both structures, making the installation work easier. .

Furthermore, the sealing device can be attached to the structure in advance before the structure is installed at a predetermined position, a large space can be used, and there is no need for underwater installation, so installation can be facilitated.

Furthermore, since the flexible member has a bent section with a wave-like cross section having a plurality of ridges, when the filler is injected and expanded after the structure is installed, the troughs are reversed and can expand greatly. To facilitate the setting of structures by sufficiently absorbing errors regardless of the amount of deviation in installation dimensions between structures and being crimped to the end face of an opposing structure to prevent water leakage. I can do it.

In this case, if a filler that maintains elasticity after solidification is used, even if a relative displacement occurs between the structures after installation, the structure can sufficiently follow the displacement and maintain a watertight state.

Furthermore, if a tongue-like piece is formed at the bent part of the flexible member, the effect of the tongue-like piece coming into close contact with the structure due to water pressure etc. can be utilized, and the watertightness can be improved accordingly. Wear.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the state in which the sealing device of the present invention is attached to one end face of the structure, Fig. 2 is a sectional view showing the state of the structure in the connection direction, and Fig. 3 is a front view showing the state in which the sealing device of the present invention is attached to the end face of one side of the structure. FIG. 4 is a cross-sectional view showing a state in which the bent portion of the flexible member is fully extended, and FIG. 5 is a cross-sectional view showing a modified example of the flexible member. 1.1'...caisson (structure), l a, l
a'... End face, 2... Flexible member, 2
a...Bending part, 2 b, 2 b'...
-Fixing part, 4...Plate member, 6...Filling material.

Claims (1)

[Scope of utility model registration request] A sealing device between a pair of structures connected with their end faces facing each other, comprising rubber, synthetic resin, etc., comprising a bent part with a wave-like cross section having a plurality of ridges, and a fixed part extending on both sides of the bent part. A flexible member made of an elastic material is attached to one end surface of the pair of structures via a plate-like member that extends between both fixed parts of the flexible member and forms a sealed space between the flexible member and the flexible member. It is attached by fixing the fixed part, a filler is sealed in the sealed space formed between the flexible member and the plate-like member, and the bent part of the flexible member is attached to the end face of the other structure. A sealing device between structures, characterized in that they are brought into expansion pressure contact with each other.