JP2000064446A - Water cut-off structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To retain the water cut-off property by bending the middle of a joint material consisting of a lengthy strip elastic material and at least one layer of a stress member buried therein to form a groove-like excessive length part, fitting the excessive length part into the recessed part of the joint part of a skeleton, and fitting it to a wall surface. SOLUTION: A lengthy strip joint material 7 is formed by burying at least one layer of a stress member 9 of natural fiber, synthetic fiber, metal or the like in an elastic body 8 of natural rubber, synthetic rubber, synthetic resin or the like. A groove-like excessive length part 10 having a substantially U-shaped or V-shaped section is formed in the longitudinal middle of the joint material 7, and locking parts 11 and cut-off protruding part 12 are formed on both sides of the excessive length part 10. The excessive length part 10 of the joint material 7 is fitted to a recessed part 14 formed on a joint part 13 by a cut-out 15 continued skeletons 1, and the locking parts 11 on both sides are fastened and fixed to the wall surfaces of the skeletons 1 through presser plate 17 by fixtures 16 such as bolt and nut. Accordingly, when the continued skeletons are inclined by displacement, the excessive length part can be conformed thereto to retain the water cut-off property of the joint part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous concrete body or concrete pipe such as a reservoir or a water purification reservoir for storing domestic water or industrial water, or a waterway for water and sewerage (referred to as a body in the present invention). The present invention relates to a waterproof structure that prevents water leakage at joints.

[0002]

2. Description of the Related Art In order to prevent water from leaking from joints between adjacent bodies, a water-stop structure is used in which the joints are covered with joint materials. As shown in FIG. 4, in the conventional water-stop structure, a water-stop plate 3 is provided behind a joint 2 of a continuous body 1 and the joint 2 is filled with a joint material 4.

As a further different structure, as shown in FIG. 5, a long strip-shaped joint material 5 made of an elastic material such as rubber is slackened in the width direction of the joint 2 so as to close the joints 2 of the continuous body 1 from the inside. 6 is formed so that its side portions are respectively locked to the end portions of the body 1. By forming a slack in the joint material in the width direction of the joint in this way and attaching it, it is possible to obtain durability by ensuring water stoppage in response to unequal subsidence of consecutive bodies and displacement due to earthquakes, etc. ing.

[0004]

According to such a prior art, in the former case, the joint material cannot follow when the body moves largely due to an earthquake or uneven subsidence, and the water blocking plate There is a problem that the joints are damaged and cannot serve the original purpose of the joint, and further, when the body moves, the ends of the body forming the joints hit each other and are damaged.

In the latter case, it is very difficult to attach a long strip-shaped joint material to a body while forming a slack along the joint. There is a problem that it is difficult to form uniformly over the entire length. Further, in the case of a water channel, since the slack is protruding, it receives flow resistance, and the portion that is in contact with the flow is greatly worn, and the stress applied to the mounting location is also large, causing a problem in durability.

Further, since the elastic material has a stress relaxation characteristic in which the compressive force decreases with time during constant displacement, as shown in FIG. 6, the crimping force of the joint portion of the joint material decreases. It will affect the waterproof function in the long term. In addition, the joint of the joint material is soft, and in order to maintain the waterproof property for a long period of time, it is necessary to secure the crimping force between the fixing points with bolts, etc. There is a problem that the sex is very bad.

[0007]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in a waterproof structure for stopping water leakage by closing a joint portion of a continuous body with a joint material, a middle portion of a joint material made of a long belt-shaped elastic material is bent. A joint material formed by molding to form a groove-like extra length portion in the longitudinal direction, and embedding one or more layers of stress material in the elastic material is used as a joint material in the concave portion formed in the joint portion of a continuous body. The extra length of the extra length is accommodated, and the locking parts on both sides of the extra length are fixed to the wall surface of the body.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a state in which a joint material is attached, FIG. 2 is a perspective view of the joint material, and FIG. 3 is a cross-sectional view of the joint material. In the figure, 7 is a long strip-shaped joint material, and natural fibers, elastic rubber 8 made of natural rubber, synthetic resin, etc.
The stress material 9 such as synthetic fiber or metal is embedded in one layer or a plurality of layers, and a groove-shaped extra length portion 10 having a bellows shape such as a U-shape, V-shape, W-shape or the like is formed in the middle in the longitudinal direction. To form the extra length 10
The locking portions 11 are formed on both sides of the. Since this locking portion 11 is required to have strength, it is preferable to increase the stacking amount of the stress material 9 from the extra length portion 10 if necessary.

Further, the stress material 9 may be a chain-like structure or a chain arranged in the longitudinal direction at predetermined intervals in the width direction. In that case, it is advisable to form a gap between the rings forming the chain and to bury the elastic body in the gap. Reference numeral 12 denotes a water-blocking ridge for enhancing the water-blocking effect in a state where the locking portion 11 is locked and fixed to the body 1, and is provided as necessary.

When the joint material 7 thus constructed is attached to the joint portion 13 of the body 1, the groove-shaped extra length portion 10 of the joint material 7 is attached.
A notch 15 is formed in the end of each body 1 to form a concave portion 14 in which the space is accommodated. In addition, if the notch 15 is deep enough to allow the extra length portion 10 to be accommodated with a margin, the notch 1 will move when the body 1 moves due to an earthquake or uneven settlement.
A space can be formed so that the broken pieces can be stored even if the end portions of 5 collide with each other and the portions are broken. Further, the shape of the notch 15 is not limited to the right-angled shape as shown in the drawing, and for example, the shape of the recess 14 is funnel-shaped or U-shaped.
It may have any shape such as a character shape.

Therefore, in order to attach the joint material 7 to the joint portion 13 of the continuous body 1, as shown in FIG. 1, the joint is formed in the recess 14 formed in the joint portion 13 by the notch 15 of the continuous body 1. The extra length 10 of the material 7 is stored, and the locking portions 1 on both sides
1 is attached to the wall surface of the body 1 by means of a locking hole 18 thereof, for example, by tightening and fixing it through a pressing plate 17 with a fixture 16 such as a bolt and a nut.

Further, as described above, since the compression rigidity can be increased by increasing the number of laminated stress members 9 in the locking portion 11, the stress relaxation phenomenon peculiar to the elastic material as shown in FIG. 6 is reduced. In addition, it is possible to suppress a decrease in pressure bonding force due to tightening and fixing, and it is possible to improve water resistance and durability over a long period of time. By attaching the joint material 7 to the joint portion 13 in this way, the extra length portion 10 can cope with the case where the continuous body 1 is tilted due to unequal subsidence or displacement due to an earthquake or the like. It is possible to maintain the water stopping property.

Further, the stress material 9 improves the adaptability when tensile stress is applied to the joint material 7 and is unlikely to be damaged, and the joint portion 13 against displacement due to unequal subsidence of the body 1 or an earthquake. Therefore, the protection of can be surely performed.

[0014]

According to the present invention described in detail above, a groove-shaped extra length portion is formed in the middle of the longitudinal direction of a joint material made of a long belt-shaped elastic material, and a stress material is placed in the elastic material. A joint material made by embedding one or more layers is stored in a recess formed in a joint portion of a continuous body, and the extra length portions are accommodated to fix the locking portions on both sides of the extra length portion to the wall surface of the reinforcement body. When the body to be tilted is tilted due to displacement, it is possible to cope with it by the extra length portion, and it is possible to maintain the water stopping property of the joint portion.

Further, since the extra length portion and the locking portion are formed, the work of attaching to the body is facilitated, and the workability of the construction is improved. Moreover, since the stress material is embedded, the compression rigidity is improved. It becomes higher, and the fixing interval by bolts or the like can be lengthened, which greatly improves the fixing work. Furthermore, since the extra length of the joint material is stored in the recess formed in the joint of the cover, the resistance of water is small when used in the running water part, resulting in reduced wear of the joint material and durability. In addition, when used in a reservoir, etc., the accumulation of residues such as sand and mud will be reduced during dry water.

[Brief description of drawings]

FIG. 1 is a sectional view showing a state in which a joint material is attached according to an embodiment.

FIG. 2 is a perspective view of the joint material.

FIG. 3 is a sectional view of the joint material.

FIG. 4 is an explanatory diagram of a conventional example.

FIG. 5 is an explanatory diagram of a conventional example.

FIG. 6 is a graph showing stress relaxation characteristics.

[Explanation of symbols]

1 body 7 joint materials 8 elastic body 9 Stress material 10 extra length 11 Locking part 12 water stop ridges 13 joints 14 recess 15 notches

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoshio Nishino             1058 Nakao, Uozumi Town, Akashi City, Hyogo Prefecture Shibata             Industry Co., Ltd. (72) Inventor Katsumasa Tokubuchi             1058 Nakao, Uozumi Town, Akashi City, Hyogo Prefecture Shibata             Industry Co., Ltd. (72) Inventor Hisao Abe             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation (72) Inventor Mutsuo Kubo             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation (72) Inventor Tsunehisa Noguchi             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation (72) Inventor Makoto Kamei             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation (72) Inventor Eiji Takada             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation (72) Inventor Katsuyuki Dewa             Shimizu Construction 1-3-2 Shibaura, Minato-ku, Tokyo             Within the corporation F term (reference) 2E109 AA07 AB04 BA06 CA01 CA02                       DB05 FA04

Claims (3)

[Claims] 1. A water-stop structure for closing water leakage by closing joints of joints with joint material to prevent water leakage, and bending the middle part of joint material made of a long band-shaped elastic material to form a groove shape in the longitudinal direction. A joint material is formed by forming an extra length portion and embedding one or more layers of stress material in the elastic material, and the extra length portion of the joint material is accommodated in the concave portion formed in the joint portion of the continuous body. A water-stopping structure characterized in that the locking parts on both sides of the part are fixed to the wall surface of the body. 2. The water blocking structure according to claim 1, wherein the amount of the stress material laminated in the locking portion is set to be larger than that of the extra length portion. 3. The water blocking structure according to claim 1, wherein a water blocking ridge is formed on the locking portion.