JP2997757B2 - Flexible impermeable joint - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible pipe for connecting a gutter pipe to a parapet wall or a water-impervious wall, particularly for connecting a parapet wall or a water-impervious wall formed for the purpose of water impermeability to a water-permeable sheet pile. Related to impermeable joints.

[0002]

2. Description of the Related Art Gutters and pipes are buried across river embankments (banks) for the purpose of water intake and drainage. The gutter pipe is constructed by connecting a plurality of boxes penetrating in the pipe axis direction. Since the housing is buried in the embankment, water flow due to permeated water flow is likely to occur between the outer peripheral surface of the gutter pipe and the embankment along the pipe axis direction. When the water path is formed, the water path expands and eventually the embankment breaks down. In order to prevent such a break, a waterproofing work is performed. The impervious work is a flange-shaped parapet provided on the outer periphery of the box at a predetermined interval in the axial direction of the gutter pipe.
This is performed by providing sheet piles continuously at the outer edge of the impermeable wall.

[0003]

By the way, especially in soft ground, the sheet pile may fall off from the chest wall or the impermeable wall due to consolidation settlement or the like. Conventionally, such a drop has been provided by providing a beard streak buried at the bottom of the chest wall or the impermeable wall at the upper end of the sheet pile. However, depending on the soil quality, the settlement of the box is larger than the settlement of the sheet pile,
There was a problem that the sheet pile hindered the sinking of the box and cracks occurred in the box. The present invention has been made in view of such a problem, and an object of the present invention is to prevent the occurrence of cracks in a box and to prevent water channels from being promoted by permeated water in a skull. Another object of the present invention is to provide a flexible impermeable joint that can be used.

[0004]

SUMMARY OF THE INVENTION The gist of the present invention is to provide a substantially U-shaped outer contour which is fixed to the bottom and both sides of the chest wall / water barrier with the portion corresponding to the opening facing upward. An inner plate, an outer plate having a substantially U-shaped outer contour, which is located in the same vertical plane as the inner plate, and is attached to the sheet pile so that the portion corresponding to the opening faces upwards so as to be impermeable to water; A flexible water-impervious joint characterized in that the outer edge is provided on the plate, and the outer edge of the inner plate is provided with a water-proof rubber having a substantially U-shape which is attached so as to be impermeable.

[0005] A rubber plate may be provided on a portion of the outer plate which comes into contact with the sheet pile. In addition, in the outer plate, in the installed state, a long hole through which a bolt can be inserted is provided in a portion that will be located on both sides of the chest wall and the impermeable wall, and the longitudinal direction is perpendicular to the longitudinal direction of the long hole. Other slotted holes may be provided in the sheet pile. Further, another engaging member of the truncated pyramid has the upper surface fixed to one side with the inclined surface facing upward so that the inclined surface faces downward and the upper surface can be engaged with the engaging member of the truncated pyramid fixed to the upper part of the sheet pile. Alternatively, the outer plate may be provided with an angle member bolted to a portion of the outer plate that will be located at the bottom of the chest wall or the impermeable wall. Further, the inner plate may have a substantially T-shaped cross section with a portion corresponding to the vertical bar portion facing outward. Further, one end of a reinforcing bar buried in the chest wall or the impermeable wall can be fixed to the inner surface of the inner plate. In addition, the waterproof rubber can also have a substantially M-shaped cross section. Also, the inner plate,
It can be fixed to a box instead of the parapet wall or impermeable wall.

[0006]

The waterproof rubber interposed between the bottom and both sides of the chest wall and the impermeable wall and the sheet pile has flexibility. When the box sinks, the water-stopping rubber is
The part at the bottom of the chest wall and impermeable wall shrinks, and the parts at both sides undergo shear deformation. Therefore, the sheet pile does not prevent the sinking of the box. When sheet piles settle due to consolidation settlement of the ground, the portions of the waterproof rubber at the bottom of the chest wall and impermeable wall are elongated, and the portions at both sides are sheared.
Therefore, the sheet pile does not fall off the parapet wall or impermeable wall.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1, the flexible water-impervious joint 1 according to the present embodiment (shown by oblique lines in FIG. 1) has a substantially U-shaped outer contour, and has the bottom and both sides of the chest wall / water-impervious wall W. And the impermeable sheet pile S, and are fixed to both. In FIG. 1, the flexible water impermeable joint 1 is illustrated in a simplified manner.

The chest wall and the impermeable wall W are made of concrete and formed on the outer periphery of the gutter pipe C at a predetermined interval in the pipe axis direction. The gutter pipe C is constructed by connecting the boxes B in the axial direction. The box B is a concrete frame having a rectangular cross section. The chest wall and the impermeable wall W are provided in a portion different from each connecting portion J between the boxes B. The impervious sheet pile S (steel sheet pile) is provided in a direction perpendicular to the pipe axis of the gutter pipe C so as to be in the same vertical plane as the chest wall and the impervious wall W, and as a whole, the gutter pipe C can penetrate. It has a substantially concave shape.

As shown in FIG. 2, the flexible water-impervious joint 1 is generally constituted by an inner plate 10, an outer plate 20, and a waterproof rubber 30 interposed therebetween.
It is fixed to impermeable wall W (cast-in-place concrete) and impermeable sheet pile S. FIG. 2 is a partially enlarged view of a corner portion of the flexible water impermeable joint 1. The inner plate 10, the outer plate 20, and the waterproof rubber 30 are assembled in a factory and installed at the site.

[0010]

Means for Solving the Problems The gist of the present invention is to provide a flange-shaped chest wall, which is formed at predetermined intervals in the pipe axis direction on the outer periphery of a gutter gate or gutter pipe buried across the embankment body. A flexible water-impervious joint for connecting a water-impervious wall and a sheet pile for water-imperviousness, etc., to be installed in substantially the same vertical plane as the chest wall / water-impervious wall, the portion corresponding to the opening With the chest wall facing upward
An inner plate having a substantially U-shaped outer contour, which is fixed to the bottom portion and both side portions of the impermeable wall, and a portion corresponding to the opening, which is located in the same vertical plane as the inner plate and faces upward. An outer plate having a substantially U-shape outer contour attached to the sheet pile so as to be impermeable to water, an outer edge portion attached to the outer plate, and a substantially U-shaped outer contour having an inner edge portion attached to the inner plate so as to be impermeable. Water-stopping rubber and the other engaging members of the truncated pyramid with the inclined surface facing upward so that the inclined surface faces downward and the upper surface can be engaged with the engaging member of the truncated pyramid fixed to the upper part of the sheet pile. A flexible water impermeable joint having an upper surface fixed to one side and an angled member bolted to a portion of the outer plate that is to be located at the bottom of the chest wall / water impermeable wall.

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

Further, in this embodiment, a horizontal rubber plate 40 is provided on the horizontal portion 21 of the outer plate 20 as shown in FIG.
A vertical rubber plate 50 is attached to the vertical portion 24.
The horizontal rubber plate 40 is attached to the lower surface of the outer plate 20,
The lower surface is in contact with the upper end of the impermeable sheet pile S. The vertical rubber plate 50 is attached to a surface of the outer bent side 26 that comes into contact with the impermeable sheet pile S, and a surface on the adhered side is in surface contact with a mountain portion of the impermeable sheet pile S. Therefore, in a state where the flexible impermeable joint 1 is installed, the outer plate 20 and the impermeable sheet pile S
A horizontal rubber plate 40 and a vertical rubber plate 50 are interposed therebetween. The thickness of the horizontal rubber plate 40 is 20
mm, and the vertical rubber plate 50 is 2 mm. Horizontal rubber plate 40
The vertical rubber plate 50 is formed by laminating a chloroprene rubber 40a and a chloroprene sponge 40b as shown in FIG. FIG. 7 shows only the horizontal rubber plate 40.

Further, as shown in FIG.
An angle member 70 is bolted to the flange 23 of the horizontal portion 21. As shown in FIG. 6, the angle member 70 is a trapezoidal angle steel in which an angle side claw portion (another engaging member) 71 is welded to one side 70a and a bolt hole is drilled in the other side 70b. The angle-side claw portion 71 is fixed with its slope facing in the direction of the corner of the angle material 70 (upward in the installed state), and is provided just below the chest wall / water barrier W (not shown in FIG. 6). It engages with the fixed sheet pile side claw (engaging member) 72 of the water sheet pile S.

As shown in FIG. 6, the sheet pile side claw 72 is also a truncated pyramid, and is fixed by welding to the upper part of the impermeable sheet pile S with the slope facing upward.

The angle members 70 are arranged in a zigzag pattern in plan view so as to be located at the peak of the impermeable sheet pile S as shown in FIG. The sheet pile side claw 72 (not shown in FIG. 3) is also fixed to the peak of the impermeable sheet pile S corresponding to the position of the angle member 70.

Next, a method of installing the flexible water impermeable joint 1 will be described. First, at the factory, the inner plate 10
Then, the flexible waterproof joint 1 assembled with the outer plate 20 is transported to the site. When the cross section of the gutter tube C is large, it may be assembled in a yard near the site. Then
As shown in FIG. 9, the impermeable sheet pile S to be located immediately below the chest wall / impermeable wall W (omitted in FIGS. 9 to 11) is cast on the ground G.

Next, as shown in FIG. 10, impermeable sheet piles S to be located on both sides of the gutter pipe C (omitted in FIGS. 9 to 11) are cast. Among the impermeable sheet piles S, the one closest to the chest wall / impermeable wall W (the impermeable sheet pile S to which the outer plate 20 is fixed) is set in advance according to the horizontal length of the flexible impermeable joint 1. Disconnect. In addition, vertical long hole 2
8 may be perforated before perforating the impermeable sheet pile S or may be perforated after perforating. Further, the sheet pile side claw portion 72 may be fixed before the impervious sheet pile S is driven, or may be fixed after the driving.

Next, as shown in FIG. 11, the flexible water-impervious joint 1 is lifted by a crane or the like and set on the water-impervious sheet pile S. The flexible water-impervious joint 1 is suspended even after positioning.

Next, the outer plate 20 is fixed to the impermeable sheet pile S. Vertical portion 24 of outer plate 20 and chest wall / water barrier W
The bolts inserted into the vertical slots 28 and the horizontal slots 27 are fastened with nuts to the impermeable sheet pile S, which is to be located on both sides. The horizontal portion 21 of the outer plate 20 and the impermeable sheet pile S located at the bottom of the chest wall / impermeable wall W are fixed by an angle member 70. At the time of such fastening, the flexible water-impervious joint 1 is suspended by a crane. The angle member 70 shown in FIG. 6 is temporarily fixed by bolts and nuts at a factory. When the nut is tightened, the angle-side claw portion 71 rises together with the angle material 70, and the upper surface (slope surface 71a) of the upper surface (slope surface 71a) is the lower surface (slope surface 72a) of the sheet pile-side claw portion 72 provided on the upper part of the impermeable sheet pile S.
Engages. When further tightened, the angle side claw portion 71 and the sheet pile side claw portion 72 come into contact with a tension. As a result, the outer plate 20 and the impermeable sheet pile S are fixed.

At least at the time of construction, the construction can be easily performed by temporarily supporting the horizontal portion of the flexible water-impervious joint 1 with the rod-shaped hard rubber 80 shown by the two-dot chain line in FIG. . In addition, for the vertical portion, the inner plate 10 and the outer plate 20 are bolted by a steel temporary fixing angle (not shown). At this time, the water stop rubber 30 is urged so as to contract (so that the M-shape is crushed in the lateral direction) and temporarily fixed.

According to the above steps, the flexible watertight joint 1
Can be installed. After that, the gutter pipe C is constructed by installing the form of the box B, the chest wall and the impermeable wall W, placing concrete or the like in the same manner as in the ordinary process. The inner plate 10 is fixed to the chest wall and the impermeable wall W by embedding the anchor rebar A in the cast concrete. As a result, in the flexible water impermeable joint 1, the chest wall / water impermeable wall W and the water impermeable sheet pile S are connected. When hitting a so-called throw-away container, the flexible water-impervious joint 1 is not buried in concrete.

Next, the operation and effect of the flexible water impermeable joint 1 configured as described above will be described. The waterproof rubber 30 provided between the bottom and both sides of the chest wall / water barrier W and the water shield sheet pile S has flexibility. When the case B sinks, the portion of the waterproof rubber 30 existing at the bottom of the chest wall / water barrier W contracts due to the force of the box B pushing downward through the chest wall / water barrier W, and both sides are contracted. The part existing in the part undergoes shear deformation.
Therefore, the impermeable sheet pile S does not hinder the settlement of the box B. As a result, it is possible to prevent the occurrence of cracks in the box C.

When the impermeable sheet pile S sinks due to the consolidation settlement of the ground G, the portion of the waterproof rubber 30 existing at the bottom of the chest wall and the impermeable wall W is pulled by the impermeable sheet pile S to extend, and both sides are extended. The part existing in is sheared. Therefore, it is possible to ensure the water shielding between the bottom surface of the chest wall / water shielding wall W and the upper end of the water shielding sheet pile S.

Further, since the waterproof rubber 30 can absorb the horizontal displacement of the box B, the occurrence of cracks in the box B can be prevented.

Further, the displacement in the pipe axis direction, that is, the impermeable sheet pile S moves from the front side to the back side of the river centering on the lower end of the impervious sheet pile S
Can be followed by the deformation of the water-stopping rubber 30 even when the shaft is rotated (turned over). Such displacement occurs because the lower part of the impermeable sheet pile S is driven into the ground G having a large N value, and then the upper part is backfilled. In addition, impermeable sheet pile S
In the in-plane direction, i.e., the displacement such that the impermeable sheet pile S is separated from the gutter pipe C, or the in-plane direction such that the upper part is separated from the gutter pipe C about the lower end of the impermeable sheet pile S. It can follow the displacement. As a result, according to the present embodiment, it is not necessary to provide a conventionally used flexible waterproof steel sheet pile.

Further, since the horizontal rubber plate 40 and the vertical rubber plate 50 are interposed at the contact portion between the outer plate 20 and the impermeable sheet pile S, it is possible to prevent water from being generated from the contact portion. Also, it is not necessary to weld the beard to the upper end of the impermeable sheet pile S. Further, since the angle member 70 is used, the horizontal portion 21 of the outer plate 20 and the upper portion of the impermeable sheet pile S can be connected very easily. Further, the angle side claw portions 71 and the sheet pile side claw portions 72 engage with each other so as to attract each other, so that they do not come off after fastening. Further, since bolts are inserted into the vertical elongated holes 28 and the horizontal elongated holes 27 and fastened, even if there is a construction error, the connection between the vertical portion 24 of the outer plate 20 and the edge of the impermeable sheet pile S is established. Can be easier.

In this embodiment, the chest wall and the impermeable wall W
Was cast-in-place, but can be applied to precast concrete. In such a case, the anchor plate A is not provided on the inner surface of the inner plate 10,
It is fixed to the chest wall / water barrier W by a suitable method. Further, the vertical slot 28 may be provided in the impermeable sheet pile S, and the horizontal slot 27 may be provided in the outer plate 20. Further, in this embodiment, the inner plate 10 is fixed to the chest wall and the impermeable wall W, but may be fixed to the gutter pipe C itself instead of the chest wall and the impermeable wall W. Further, the number, position, and the like of the anchor rebar A, the bolts, and the like are not limited to those in the above-described embodiment, and can be set to numbers and positions suitable for carrying out the present invention. Further, in the present embodiment, the gutter pipe C is connected, but in the present invention, it can be connected to a gutter gate.

[0034]

Since the present invention is constructed as described above, the waterproof rubber provided between the bottom and both sides of the chest wall and the impermeable wall and the impermeable sheet pile is deformed to form a housing. Can be absorbed. As a result, it is possible to prevent the occurrence of cracks in the box and the promotion of water channels due to the infiltration water in the fin.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a flexible water-impervious joint attached to a chest wall / water-impervious wall and a water-impervious sheet pile.

FIG. 2 is a partially enlarged view of a flexible water impermeable joint.

FIG. 3 is a sectional view taken along line aa of FIG. 2;

FIG. 4 is a sectional view taken along line bb of FIG. 2;

FIG. 5 is a sectional view taken along the line c-c in FIG. 2;

FIG. 6 is an enlarged view of a part d in FIG. 4;

FIG. 7 is an end view of a horizontal rubber plate.

FIG. 8 is a sectional view taken along the line ee in FIG. 2;

FIG. 9 is a front view showing a process chart.

FIG. 10 is a front view showing a process chart.

FIG. 11 is a front view showing a process chart.

[Explanation of symbols]

 Reference Signs List A anchor reinforcing bar B housing C gutter pipe G ground J connecting part S impermeable sheet pile W chest wall / impermeable wall 1 flexible impermeable joint 10 inner plate 11 web 12 flange 20 outer plate 21 horizontal part 22 web 23 flange 23 vertical Part 25 Inside bent side 26 Outside bent side 27 Horizontal long hole 28 Vertical long hole 30 Waterproof rubber 40 Horizontal rubber plate 40a Chloroprene rubber 40b Chloroprene sponge 50 Vertical rubber plate 60 Fixing plate 70 Angle material 70a One side 70b Other side 71 Angle Side claw 71a Slope 72 Sheet pile side claw 72a Slope 80 Hard rubber

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Chuichi Tobita 1-3-1, Otemachi, Chiyoda-ku, Tokyo Inside the Kanto Regional Construction Bureau, Ministry of Construction (72) Inventor Takemi Kenmochi 1-3-1, Otemachi, Chiyoda-ku, Tokyo No. Within the Kanto Regional Construction Bureau, Ministry of Construction (72) Inventor Takumi Moto, 1-3-1, Otemachi, Chiyoda-ku, Tokyo (72) Within the Kanto Regional Construction Bureau, Ministry of Construction (72) Inventor Soichiro Shimizu 2-7-5 Higashi-Shimbashi, Minato-ku, Tokyo (72) Inventor Shiro Matsumoto 700-70 Tomuro, Atsugi-shi, Kanagawa (56) References JP-A-63-181810 (JP, A (58) Fields investigated (Int. Cl. ⁷ , DB name) E02D 5/02-5/20 E03F 3/00-3/06 E03B 7/00-7 /14

Claims (1)

(57) [Claims] 1. A collar-shaped chest wall / water barrier which is formed at predetermined intervals in the pipe axis direction on the outer periphery of a gutter gate / gutter pipe buried across the embankment, and the chest wall / water barrier. A flexible water-impervious joint for connecting a wall and a sheet pile for the purpose of water-impermeation, etc., to be installed in substantially the same vertical plane, wherein the portion corresponding to the opening is directed upward and the chest wall / water-impervious An inner plate fixed to the bottom and both sides of the wall and having a substantially U-shaped outer contour; and the sheet pile, which is located in the same vertical plane as the inner plate and has a portion corresponding to an opening facing upward. A substantially U-shaped outer plate attached to the outer plate so as to be impermeable to water, and an outer plate having an outer edge portion attached to the outer plate, and an inner edge portion attached to the inner plate so as to be impermeable to water. Water-stopping rubber, and a corner capable of engaging with an engaging member of a truncated pyramid fixed on the upper part of the sheet pile with the upper surface facing up with the slope facing downward. Other engagement member of the platform slopes is fixed to the upper surface upward to one side, the other side is,
A flexible water impervious joint comprising: an outer plate having an angle member bolted to a portion to be located at the bottom of the chest wall / water impermeable wall.