JP6370189B2 - Water stop member and water stop structure using the same - Google Patents

Description

  The present invention relates to a water stop member and a water stop structure using the same, and more particularly, an expansion joint portion in a concrete structure having a right angle portion such as a wall rail and a ground cover at an end of a bridge. The present invention relates to a water stop member for sealing the gap between the two and a water stop structure using the same.

  In order to prevent water leakage at the expansion joints of concrete structures that have vertical bends from the horizontal, such as wall rails and ground coverings at the ends of bridges, conventionally, a sealing material is filled between the expansion joints. Or a method in which the gap is closed with a rubber plate. However, the sealing materials and rubber plates used in these methods are vulnerable to ultraviolet rays, ozone, and the like, and especially when used in places that are constantly exposed to direct sunlight, such as bridge ends, the progress of deterioration is accelerated and 10 years. If it passes, the water stop performance will be lost.

  Therefore, it is conceivable to use a stainless steel plate that is resistant to salt and UV rays and has excellent weather resistance. Since the gap variation between the play cannot be absorbed, the fixing portion or the like is pushed and pulled along with the gap change between the play, and the water stop is immediately disturbed.

JP 2005-256281 A Utility Model Registration No. 3172036

  As described above, conventionally, as a countermeasure against water leakage of the expansion joint portion of a concrete structure having a portion that bends from the horizontal to the vertical, such as a wall rail and a ground cover at the end of the bridge, a sealing material is filled between the play spaces. The method of fixing the rubber plate has been adopted, but there is a problem that the seal material and the rubber plate have a short life due to lack of weather resistance, and when using a stainless plate having high weather resistance, There was a problem that it could not be a countermeasure for water leakage because it could not cope with the interval fluctuation.

  Therefore, the present invention does not have such a problem, that is, a concrete structure having a portion that bends from the horizontal to the vertical, such as a wall railing and a ground cover at the end of a bridge, which is not weather-resistant and hardly deteriorates at the time of connection. It is an object of the present invention to provide a water-stopping member suitable for use in measures against water leakage between loose joints of objects and a water-stop structure using the same.

The invention according to claim 1 for solving the above problem is a member for sealing a gap between concrete structures having a right-angled portion and the interval of which may vary.
A thin water-stopping material main body comprising a flexible part that can bend and deform in the width direction and expand and contract, and a flat fixing part continuously provided on both sides thereof, and a rubber packing disposed below the fixing part, A metal pressing plate disposed on the upper side of the fixing unit,
The flexible part of the waterstop body has a fold corresponding to a right angle part of the concrete structure, and the flexible part on one side and the flexible part on the other side across the fold. And the water-stopping material body is composed of a substrate and a shape-retaining support plate disposed on the lower side of the substrate, and the shape-retaining support plate, The substrate is a water stopping member made of stainless steel foil .

In one embodiment, prior Kihogata support plate thickness Tedea Ru than the substrate.

Invention of Claim 4 for solving the said subject is water stop in the expansion joint part of a wall rail and a ground cover part constructed using the water stop member in any one of Claim 1 thru | or 3. Structure,
One end in the width direction of the water stop member laminated in the order of the rubber packing, the fixing portion of the water stop main body, and the metal retaining plate from the bottom is the edge of the wall rail / ground cover portion on one side The other end in the width direction is fixed to the edge of the wall rail / ground cover portion on the other side, and the horizontal portion of the wall rail / ground cover portion of the flexible portion of the water stop material body The water stop structure is characterized in that the bulge direction in the bulge direction and the bulge direction in the vertical portion are reversed.

  As described above, the water-stop member according to the present invention includes a thin water-stop material body composed of a flexible portion that can bend and deform in the width direction and expand and contract, and flat fixing portions that are continuously provided on both sides of the flexible portion. Comprising a rubber packing disposed below the fixing portion and a metal retaining plate disposed above the fixing portion, and the flexible portion of the water-stopping material body corresponds to a right angle portion of the concrete structure. A flexible part on one side of the fold and a flexible part on the other side bulge to the opposite side of the front and back. When it is arranged between the play of the expansion joint part of a concrete structure with a part that bends from the horizontal like the ground cover, the flexible part bends and deforms following the interval variation between play, As the folds of the flexible part move in the front-rear direction with fluctuations in the gap between the play, the fluctuations in the gap are absorbed. Rukoto can also I cooperation with a possible weather resistance material is used, there is an effect capable of retaining its water stopping performance over a long term.

  In addition, since the water stop structure according to the present invention uses the water stop member having the above-described effect, even if the interval variation occurs between play points in the construction site, the flexible portion of the water stop material body is bent and deformed, Moreover, since the fluctuation can be absorbed by the movement of the fold, the water stop means is not damaged due to the fluctuation of the interval, and coupled with the use of the weather resistant material. There is an effect that the water stopping performance can be maintained for a long time.

It is a disassembled perspective view of the water stop member which concerns on this invention. It is a perspective view which shows the construction state of the water stop member which concerns on this invention. It is an AA line longitudinal cross-sectional view in FIG. 2 which shows the effect | action of the water stop member which concerns on this invention.

  A mode for carrying out the present invention will be described with reference to the accompanying drawings. The water-stop member 1 according to the present invention is a member mainly for sealing a gap between concrete structures having a right-angled portion and the interval of which may vary, as shown in FIG. A thin water-stopping material body 2 composed of flexible portions 3 and 3a which can bend and deform in the width direction and expand and contract, and flat fixing portions 4 extending on both sides thereof; The rubber packing 5 is arranged, and the fixing plate 4 is mounted on the upper side, and the fixing unit 4 and the metal holding plate 6 for holding down the rubber packing 5 existing below the fixing unit 4 are formed.

  The water-stop material main body 2 includes a substrate 8 and a shape-retaining support plate 9 that has a shape corresponding to the lower portion (lower horizontal portion) of the substrate 8 and is attached to the back side of the substrate 8 (see FIG. 1). . The shape-retaining support plate 9 serves to support and reinforce the lower portion of the substrate 8 from the back side thereof. Like the substrate 8, the shape-retaining support plate 9 includes a flexible portion 10 and fixing portions 11 extending on both sides thereof. The flexible portion 10 is formed so as to bulge to the surface side with the same curvature as the flexible portion 3 of the substrate 8. The flexible portion 10 is slightly longer than the flexible portion 3, that is, its back end protrudes slightly behind the fold 7 that is the boundary between the flexible portion 3 and the flexible portion 3 a. Formed as follows.

  For example, the substrate 8 has a thin thickness of about 0.05 mm, and the shape-retaining support plate 9 that supports the substrate 8 has a thickness of about 0.1 mm, which is twice as large. Typically, a metal foil, particularly a stainless steel foil, is used for the substrate 8 and the shape-retaining support plate 9, but a thin weather-resistant resin material such as a fluororesin sheet can also be used.

  The rubber packing 5 and the pressing plate 6 are each formed in a shape and a length corresponding to the fixing portion 4 of the water blocking material main body 2. The water-stopping material body 2, the rubber packing 5 and the retaining plate 6 can be formed in series, but considering that it is inevitable that a dimensional error occurs in the concrete structure, each is divided into a plurality of parts. It is preferable to form and join together in a series at the time of construction.

  The water blocking material main body 2 (substrate 8), the rubber packing 5 and the retaining plate 6 in the illustrated example are each divided into an upper right angle portion, an intermediate straight portion and a lower right angle portion. The upper right-angled portion corresponds to the right-angled portion at the upper end of the concrete structure (not necessarily in the strict sense), and the horizontal flexible portion 3 bulges to the surface side, and the vertical portion The flexible part 3a is formed so as to bulge to the back side. The lower right angle portion corresponds to the lower right angle portion (same as above) of the concrete structure, the vertical flexible portion 3a bulges to the back surface side, and the horizontal flexible portion 3 bulges to the front surface side. It is formed to come out. Moreover, the flexible part 3a of the intermediate linear part is bulged to the back side.

  The flexible portions 3 and 3a are bent and deformed by receiving a load from the lateral direction, and the bulging shape is generally a semicircular cross section as in the illustrated example, but is not limited thereto. For example, it can be a triangle, a square, or any other bulging shape.

  FIG. 2 shows a state in which the water blocking member 1 having the above-described configuration is applied to the bridge wall height columns 21 and 22 and the expansion joint portions of the ground covering portions 21a and 22a. When the water stop member 1 is constructed, first, the water stop member 1 in which the rubber packing 5, the fixing portion 11 of the shape retaining support plate 9, the fixing portion 4 of the substrate 8, and the metal retaining plate 6 are laminated in this order from the bottom. Is fixed to the edge of the wall height column 21 / ground cover portion 21a on one side, and then the other end portion of the water blocking member 1 laminated in the same manner is fixed to the wall height column 22 / ground cover on the other side. It fixes to the edge of the part 22a. In this case, the end of the water-stopping member 1 can be fixed to the free edge by embedding in the case of a new installation, and by using a fastening means such as an anchor when used in an existing part. Can do.

  Thus, the flexible portions 3, 3 a, and 10 block the gap 23 between the wall height columns 21, 22 and the gap 23 between the ground cover portions 21 a, 22 a (see FIG. 3), and seal that portion with a watertight seal. Prevent rainwater etc. from leaking into the play. In this state, even if a load is applied in the width direction due to the fluctuation in the gap 23 due to the expansion and contraction due to the temperature change of the bridge, the flexible portions 3, 3 a and 10 are bent and deformed to expand and contract in the width direction. Can be absorbed (see FIG. 3), and the water stop performance is not hindered.

  Further, the position of the crease 7 that is the boundary between the vertical flexible portion 3a and the horizontal flexible portion 3 in the lower right-angled portion is not fixed, and the wall height column 22 with respect to the wall height column 21 (ground cover portion 21a). It moves in the front-rear direction following the change in the distance between the fixing portions 4 and 4 caused by the relative displacement of the (ground cover portion 22a). That is, when the interval between the fixing portions 4 and 4 is widened, the fold 7 is advanced by pulling the flexible portion 3, and when the interval between the fixing portions 4 and 4 is narrowed, the flexible portion 3 is pushed from both sides. As a result, the crease 7 moves backward. In this way, the crease 7 moves back and forth, so that it is possible to cope with the interval variation of the play 23. In addition, since the expansion / contraction due to the temperature change of the bridge (change in the interval of the gap 23) is once a year, if it can withstand 50 expansions / contractions, it can simply be said that it has a useful life of 50 years.

  Although the invention has been described in some detail in its most preferred embodiments, it will be appreciated that a wide variety of embodiments can be constructed without departing from the spirit and scope of the invention. Accordingly, the invention is not limited to that particular embodiment, except as limited in the appended claims.

DESCRIPTION OF SYMBOLS 1 Water stop member 2 Water stop member main body 3, 3a, 10 Flexible part 4, 11 Fixing part 5 Rubber packing 6 Stopping plate 7 Fold 8 Substrate 9 Shape retention support plate 21, 22 Wall height column 21a, 22a Ground cover part 23 Yuma

Claims (4)

A member for sealing a gap between concrete structures having a right-angled portion and the interval of which may vary,
A thin water-stopping material main body comprising a flexible part that can bend and deform in the width direction and expand and contract, and a flat fixing part continuously provided on both sides thereof, and a rubber packing disposed below the fixing part, A metal pressing plate disposed on the upper side of the fixing unit,
The flexible part of the waterstop body has a fold corresponding to a right angle part of the concrete structure, and the flexible part on one side and the flexible part on the other side across the fold. And the water-stopping material body is composed of a substrate and a shape-retaining support plate disposed on the lower side of the substrate, and the shape-retaining support plate, The water stop member, wherein the substrate is made of stainless steel foil . The shape retaining support plate has a thickness hand than said substrate, water-shutoff member according to claim 1. The water-stop member according to claim 1 or 2 , wherein the flexible portion of the water-stop material body has a semicircular cross-section and other arbitrary shapes, and is bent and deformed by receiving a load from the lateral direction. . Any one of claims 1 to 3 is applied using water-shutoff member according to, a water stop structure in the expansion joint portion of the wall railings-Jibuku unit,
One end in the width direction of the water stop member laminated in the order of the rubber packing, the fixing portion of the water stop main body, and the metal retaining plate from the bottom is the edge of the wall rail / ground cover portion on one side The other end in the width direction is fixed to the edge of the wall rail / ground cover portion on the other side, and the horizontal portion of the wall rail / ground cover portion of the flexible portion of the water stop material body The water stop structure characterized by the fact that the bulge direction at the vertical portion and the bulge direction at the vertical portion are reversed.

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