JP6792981B2 - Water-stop structure and construction method of the water-stop structure - Google Patents

Description

The present invention relates to a waterproof structure for preventing the ingress of water and a method for constructing the waterproof structure.

The water stop device closes the openings formed in structures including buildings such as buildings, houses, and warehouses by opening and closing bodies when water overflows due to heavy rain, etc., and prevents water from entering the structures. This is to prevent (see, for example, Patent Document 1).
As illustrated in FIG. 8, the conventional water stop device includes a rectangular frame-shaped frame 101 and an opening / closing body 102 that rotates in an arc shape within the frame 101, and is located near the inner edge of the frame 101. When water pressure is applied to the closed opening / closing body 102 from the outside, the receiving piece receives the outer edge of the back surface (downstream side surface in the water pressure direction) of the opening / closing body 102 via the water blocking rubber 105. 101a is provided.
Then, in the water stopping structure using the conventional water stopping device, a plurality of reinforcing bars a2 are welded to the anchor bolts a1 driven into the inner edge of the opening a on the downstream side of the frame body 101, and these reinforcing bars a2 A flat plate bracket 104 extending rearward from the side surface of the frame 101 is welded to the tip of the frame 101. The mortar a3 is injected and hardened into the closed space around the reinforcing bar rod a2 and the closed space on the back side of the frame 101.
That is, in the conventional installation structure of the water stop door, the inner edge of the opening a and the side surface of the frame body 101 are connected via the reinforcing bar a2, the flat plate bracket 104, and the like, and the back side of the frame body 101 is mortar. Received only by.

JP-A-2015-148906

In the conventional structure, when the opening / closing body 102 receives a strong water pressure, this water pressure is applied to the mortar on the back side of the frame 101, and further to the flat plate bracket 104, the reinforcing bar a2, and the like. Therefore, the mortar may collapse, the flat plate bracket 104 may be deformed, the welded portion between the flat plate bracket 104 and the reinforcing bar rod a2, or the welded portion between the reinforcing bar rod a2 and the anchor bolt a1 may come off. is there.

In view of such problems, the present invention has the following configurations.
An annular frame having a receiving piece on the inner edge side and a water blocking device provided with an opening / closing body that is fitted into the frame and pressed watertightly against the receiving piece are fitted and fixed in the opening of the structure. In the water-stopping structure, a long base material continuous along the circumferential direction of the frame is fixed to the inner edge of the opening, and the base material is attached to the back side of the receiving piece with respect to the receiving surface. water shut-off structure supporting support member which Ru undergoing downstream face, characterized in that it is more secured at intervals in the circumferential direction of the.

Since the present invention is configured as described above, it is possible to improve the connection strength of the frame body in the water stop door.

It is a perspective view which shows the main part of the water stop structure which concerns on this invention. It is a front view which shows an example of a water stop device. It is a rear view of the water stop device. It is a vertical cross-sectional view which shows an example of the water stop structure which concerns on this invention which provided the same water stop device. It is an enlarged sectional view which shows the lower end side part in FIG. 4, and the mortar is omitted. It is a cross-sectional view which shows an example of the same water stop structure. It is an enlarged cross-sectional view which shows the lower end side part in FIG. 6, and the mortar is omitted. It is sectional drawing which shows an example of the conventional water-stopping structure.

In this embodiment, an invention having the following features is disclosed.
The first feature is that a water blocking device including an annular frame having a receiving piece on the inner edge side and an opening / closing body fitted in the frame and pressed watertightly against the receiving piece is provided in the opening of the structure. In the water blocking structure that is fitted and fixed to the water stop structure, a support member is fixed to the inner edge of the opening so as to receive the downstream side surface of the receiving piece on the back side with respect to the receiving surface (FIGS. 4 and 6). reference).
According to this configuration, since the receiving piece to which the force in the downstream direction due to the water pressure is locally applied is received by the support member from the back side thereof, deformation, breakage, detachment, etc. of each part are unlikely to occur.

The second feature is that in order to further improve the strength, workability, etc., a long base material continuous along the circumferential direction of the frame is fixed to the inner edge of the opening, and the support member. Are provided at intervals in the circumferential direction, and are fixed to the base material.

The third feature is that a plurality of mounting pieces corresponding to the plurality of support members are connected to the downstream side surface of the receiving piece in order to further improve the strength and workability, and the plurality of mounting pieces are connected to the plurality of mounting pieces. , The support member is overlapped and connected to the downstream side surface thereof, respectively.

The fourth feature is that the support member is an angle steel having a first piece and a second piece intersecting with the first piece in order to further improve the strength and workability. The first piece is connected to the base material, the second piece is connected to the mounting piece, and mortar is provided around the support member and the mounting piece.

The fifth feature is the method of constructing the water blocking structure, in which the base material is fixed to the inner edge of the opening, and the frame body to which the mounting piece is welded is fitted into the opening. The first piece of the support member is welded to the base material, and the second piece of the support member is welded to the mounting piece.

<Specific embodiment>
Next, a specific embodiment having the above characteristics will be described in detail with reference to the drawings.
1 to 3 show a water stop device A used as an example of the water stop structure B according to the present invention.
In the following description, the upstream side means the side in the direction in which water flows. Further, the downstream side means the side in the direction in which water flows. In the illustrated example, the upstream side of the water stop device A is the outdoor side, and the downstream side of the water stop device A is the indoor side.

The water stop device A includes an endless rectangular annular frame body 10 having a receiving piece 11 on the inner edge, and an opening / closing body 20 that is fitted into the frame body 10 and is watertightly pressed against the receiving piece 11 of the frame body 10. Be prepared.
This water blocking device A is installed in an opening a of a structure S including a building, a house, a warehouse, a tunnel, or an underpass, and is a water blocking structure that blocks the passage of water through the opening a. Consists of B.

The frame body 10 is formed in an integral rectangular frame shape having a central portion opened by the upper and lower horizontal frame members 10a and 10a and the left and right vertical frame members 10b and 10b.
Each of the horizontal frame member 10a and the vertical frame member 10b is formed by bending a metal material such as a steel plate, and is recessed toward the downstream side (upper side according to FIG. 7) on the inner edge side thereof and inside the frame (according to FIG. 7). It has a substantially concave receiving piece 11 projecting to the left side).
Each receiving piece 11 receives the outer edge side portion of the opening / closing body 20 from the downstream side thereof.

Further, a four-sided frame 12 is connected and fixed to the tip side of each receiving piece 11 so as to project to the downstream side.
The four-sided frame 12 is a rectangular frame made of sheet metal that surrounds the passage in the frame from the top, bottom, left, and right on the downstream side of the frame 10.
The four-sided frame 12 is fitted to the receiving piece 11 of the frame body 10 and is fastened by a well-known fastening means (for example, welding, screwing, etc.).

The front end side of the four-sided frame 12 projects forward from the receiving surface of the receiving piece 11. Therefore, the front end side of the four-sided frame 12 and the receiving piece 11 are configured to have a concave cross section (see FIGS. 5 and 7) having an open front. This concave portion is continuous in an endless rectangular ring along the inner edge of the frame body 10, and a seal rubber 1 and a waterproof rubber 2 are fitted inside the concave portion so that the tip portion faces upstream. There is.

The back surface side of the frame body 10 and the four-sided frame 12 is reinforced by the reinforcing piece 14. A plurality of the reinforcing pieces 14 are provided at intervals in the longitudinal direction of each horizontal frame member 10a, and a plurality of reinforcing pieces 14 are further provided at intervals in the longitudinal direction of each vertical frame member 10b.
Each reinforcing piece 14 is formed by bending a strip-shaped sheet metal material into a cross-sectional crank shape, and is a portion between the frame body 10 and the square frame 12 and the inner edge of the opening a on the upstream side of the receiving piece 11 in the frame body 10. , The receiving piece 11 and the four-sided frame 12 are fastened to the rear end side portion by a fastening means such as welding (see FIGS. 5 and 6).

Further, the seal rubber 1 is continuously provided over the entire circumference of the endless rectangular annular receiving piece 11, and is in a closed position where the opening / closing body 20 closes the opening in the frame body 10 with the downstream side surface of the opening / closing body 20. It is sandwiched between the receiving pieces 11 and elastically deformed to suppress the passage of gas, the flow of water, and the like.
The seal rubber 1 is formed of, for example, an elastomer resin, another elastic resin material, synthetic rubber, or the like, and is formed with a hollow cross section according to the illustrated example.

The water blocking rubber 2 is continuously provided inside the frame with respect to the seal rubber 1 over the entire circumference of the endless rectangular annular receiving piece 11, and the opening / closing body 20 closes the opening in the frame body 10 and is slightly downstream. In the moved water stop position, it is sandwiched between the downstream side surface of the opening / closing body 20 and the receiving piece 11 and elastically deformed to prevent the ingress of water.
Although the seal rubber 1 described above also has a slight effect of blocking the ingress of water, the water stop rubber 2 has a stronger water stop action than the seal rubber 1.
The waterproof rubber 2 is formed of, for example, an elastomer resin, another elastic resin material, a synthetic rubber, or the like, and according to the illustrated example, is formed in a solid cross section, and is more flexible and stronger than the seal rubber 1. Has the power.
As another example of the waterproof rubber 2, it can be formed from a soft resin material having closed cells, a sponge-like soft resin material, a soft resin material having a hollow portion, or the like.

Further, in the receiving piece 11 of the frame body 10, the downstream side surface located on the back side with respect to the receiving surface is in the circumferential direction of the frame body 10 (vertical direction in the vertical frame member 10b, substantially horizontal direction in the horizontal frame member 10a). A plurality of mounting pieces 13 are fixed at intervals.
The mounting piece 13 is a rectangular flat plate-shaped member made of a steel material, and is fixed to the back surface of the receiving piece 11 so that one end side protrudes from the receiving piece 11 toward the outside of the frame (to the right according to FIG. 7). ing. The fixing means may be, for example, bolt tightening or welding.

Further, the opening / closing body 20 is a double door type door body in which one is a child door 21 and the other is a parent door 22.
Here, the child door 21 means the door body that is closed first, and the parent door 22 means the door body that is closed after the child door 21. The magnitude relationship between the width dimensions of the child door 21 and the parent door 22 is substantially the same according to the illustrated example, but one of them may be larger than the other.

The child door 21 is formed in a substantially rectangular plate shape, and one of the left and right side portions (left side according to FIG. 2) is hinged with respect to one vertical frame member 10b of the frame body 10. It is supported through 3.
The child door 21 is fully closed before the main door 22 even if the main door 22 is closed first by a well-known closing order regulating device (not shown) provided on the upper horizontal frame member 10a. The door.
A flat plate-shaped receiving portion 21b is provided on the door end side of the child door 21 so as to overlap the door end side of the main door 22 from the downstream side (see FIG. 6).

The main door 22 is formed in a substantially rectangular plate shape, and the other side (right side according to FIG. 2) of the left and right side portions is hinged with respect to the other vertical frame member 10b of the frame body 10. It is supported through 3.
The main door 22 is fully closed after the child door 21 by the well-known closing order regulating device (not shown) described above.
A waterproof rubber 22a is provided on the door end side of the main door 22 so as to overlap the receiving portion 21b on the door end side of the child door 21 (see FIG. 6).

The biaxial hinge 3 is a well-known axial support device including two rotating shafts and a link member or the like pivotally supported by these rotating shafts. The biaxial hinge 3 opens and closes by rotating each of the child door 21 and the main door 22 with one rotation axis closer to the vertical frame member 10b as a fulcrum. Further, in the closed position where the child door 21 and the main door 22 are fully closed, the child door 21 and the main door 22 are rotated around the other rotation axis as a fulcrum to move them substantially in parallel to the downstream side. By this parallel movement, the child door 21 and the main door 22 elastically crush the water blocking rubber 2 described above to reach the water stopping position.

Next, the construction method of the water stop structure B in which the water stop device A having the above configuration is installed in the opening a of the structure S will be described in detail.

First, a long base material 32 continuous along the circumferential direction of the frame 10 is fixed to the inner edge of the concrete opening a of the structure S. In detail, the substrate 32 are respectively provided, et al are above and below the horizontal plane forming an opening a the inner edge, respectively provided to the left and right sides.
Each base material 32 is a long strip-shaped member made of a steel material, and is immovably fixed by a plurality of anchor bolts 31 driven into the inner edge of the opening a.

Next, a plurality of support members 33 are fixed to each base material 32 at intervals in the longitudinal direction thereof. The arrangement of the plurality of support members 33 corresponds to the positions of the plurality of mounting pieces 13 on the frame body 10 side.
In each support member 33, the first piece portion extends downstream from the second piece portion, and the extended portion is anchored to the base material 32.
According to the illustrated example, each support member 33 is a short angle steel (equipval angle steel according to the illustrated example) having a first piece portion and a second piece portion substantially orthogonal to the first piece portion. It is cut into pieces.
The first piece is fixed to the base material 32 by fillet welding from the downstream side in a state of being in surface contact with the surface of the base material 32.
Further, the second piece portion is fixed to the back surface of the mounting piece 13 by fillet welding from the downstream side in a state where the second piece portion is in surface contact with the back surface (downstream side surface) of the mounting piece 13. In FIGS. 5 and 7, reference numeral W indicates a fillet welded portion.
As another example of each support member 33, a T-shaped steel in which the second piece portion rises from the central portion of the first piece portion may be used.

Next, a plurality of reinforcing bars 34 are fixed between the lower horizontal frame member 10a and the inner edge of the facing opening a, and between the upper horizontal frame member 10a and the inner edge of the facing opening a. To.
One end of each reinforcing bar 34 is fixed to the surface of the base material 32 by welding from the downstream side, and the other end side is fixed to the downstream end of the reinforcing piece 14 by welding from the downstream side. (See FIG. 5).
These reinforcing bar rods 34 prevent the downstream side of the four-sided frame 12 from tilting in the vertical direction due to water pressure, the weight of a passing object, or the like.

Further, between the outer surface of the frame body 10 and the opening a, a waterproof packing 35 made of an elastic body is mounted in a multi-layered manner with respect to the water intrusion direction.
Then, the mortar M is filled and solidified around the support member 33 (see FIGS. 4 and 6). In this filling work, the mortar M is poured between the plurality of support members 33 at intervals, so that the work efficiency is good.
This construction method is the same on the upper side and the lower side of the frame body 10 (see FIGS. 4 and 5) and on the left side and the right side of the frame body 10 (see FIGS. 6 and 7), respectively.

In FIGS. 1 to 3, reference numeral 6 is an opening / closing knob for opening / closing the main door 22, and reference numerals 7 and 8 are rotated to move the main door 22 in the closed position to the water stop position. The operated Gremon handles, reference numerals 4 and 5, are Gremon handles that are rotated to move the child door 21 in the closed position to the water stop position.

Therefore, next, the characteristic action and effect of the water-stopping structure B having the above-mentioned structure and the construction method of the water-stopping structure B will be described in detail.
When the Gremon handles 4, 5, 7, and 8 are operated at the closed positions of the opening / closing body 20 (parent door 22 and child door 21), the parent door 22 and the child door 21 compress the seal rubber 1 and the waterproof rubber 2. By deforming the door, the water blocking rubber 22a on the front side of the main door 22 is pressed against the receiving portion 21b on the front side of the child door 21, and the inside and outside of the opening / closing body 20 are kept watertight.
In this state, when water pressure caused by water damage or the like is applied to the outdoor side of the water stop device A, the opening / closing body 20 is pressed in the downstream direction by the water pressure (see FIGS. 4 and 6), and the opening / closing body 20 is further pressed. The frame body 10 received by the receiving piece 11 is also pressed in the downstream direction.
The pressing force at this time is locally applied to the portion of the receiving piece 11 and is received by the plurality of mounting pieces 13 directly behind the receiving piece 11 (see FIGS. 5 and 6).
The rear side of the mounting piece 13 has the robust fixing structure described above. That is, each mounting piece 13 is connected to the support member 33 by fillet welding. Further, each of the plurality of support members 33 is connected to the elongated base material 32 by fillet welding. Then, the base material 32 is fixed to the structure S by a plurality of anchor bolts 31, and mortar M is solidified around them.
Therefore, according to the water blocking structure B, deformation of each part due to water pressure is unlikely to occur, and the fixed structure on the downstream side of the frame body 10 is damaged, the welded portion is disengaged, the mortar M is collapsed, and the like. Can be prevented and good water stopping performance can be maintained.

According to the above embodiment, the support member 33 is fastened to the mounting piece 13 after being fastened to the base material 32, but the fastening order can be reversed.

Further, according to the above embodiment, the downstream side surface of the frame body 10 on the back side of the receiving piece 11 is received by the support member 33 via the mounting piece 13, but as another example, the downstream side surface is directly supported by the supporting member. It is also possible to have a structure that receives by 33.

Further, according to the above embodiment, the upstream side of the water stop device A is the outdoor side, and the downstream side of the water stop device A is the indoor side. However, depending on the installation status of the structure S, the upstream side is a shop. It is also possible that the inside and the downstream side are the outdoor side. In such a case, the water stop device A may be installed with the thickness direction opposite to that shown in the drawing. That is, the opening / closing body 20 is directed toward the indoor side, and the opening / closing body 20 is received from the outside by the receiving piece 11 of the frame body 10.

Further, according to the above embodiment, the double door type water stop door is configured as the water stop device A, but as another example, a single door type water stop door, a sliding door type water stop door, or the like is configured. Is also possible.

Further, the present invention is not limited to the above-described embodiment, and can be appropriately changed without changing the gist of the present invention.

10: Frame body 10a: Horizontal frame member 10b: Vertical frame member 11: Receiving piece 20: Opening and closing body 21: Child door 22: Parent door 31: Anchor bolt 32: Base material 33: Support member 34: Reinforcing bar A: Water stop Equipment B: Water-stop structure M: Mortar S: Structure W: Welded part a: Opening

Claims (4)

An annular frame having a receiving piece on the inner edge side and a water blocking device provided with an opening / closing body that is fitted into the frame and pressed watertightly against the receiving piece are fitted and fixed in the opening of the structure. In the waterproof structure
A long base material continuous along the circumferential direction of the frame is fixed to the inner edge of the opening .
Water shut-off structure into the substrate, the supporting support member which Ru undergoing downstream side of the back side with respect to the receiving surface of the receiving piece, characterized in that it is more secured at intervals in the circumferential direction. A plurality of mounting pieces corresponding to the plurality of support members are connected to the downstream side surface of the receiving piece, and the support member is superimposed and connected to the downstream side surface of each of the plurality of mounting pieces. The water-stop structure according to claim 1, wherein the water-stopping structure is provided. The support member is angle steel integrally having a first piece portion and a second piece portion intersecting the first piece portion, and the first piece portion is connected to the base material, and the second piece portion is connected to the base material. The water-stop structure according to claim 2, wherein is connected to the mounting piece, and a mortar is provided around the support member and the mounting piece . After fixing the base material to the inner edge of the opening and fitting the frame body to which the mounting piece is fastened to the opening, the first piece of the support member is used as the base material and the support member is used. The method for constructing a waterproof structure according to claim 3, wherein the second piece portion of the above is welded to the mounting piece .

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