JP3921507B2 - Water stop structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention prevents water leakage in joints of continuous concrete bodies and concrete pipes (referred to as "body" in the present invention) such as reservoirs, water purification ponds, water supply and sewerage channels for storing domestic water, industrial water, and the like. It relates to the water stop structure.
[0002]
[Prior art]
In order to prevent water leakage from the joints of the corpses, a water-stopping structure is used to seal the joints with joint materials.
In the conventional water stop structure, as shown in FIG. 4, a water stop plate 3 is provided in the back of the joint 2 of the continuous housing 1, and the joint 2 is filled with the joint material 4.
[0003]
As a different structure, as shown in FIG. 5, a long strip-shaped joint material 5 made of an elastic material such as rubber is formed in the width direction of the joint 2 so as to block the joint 2 of the continuous casing 1 from the inside. In this manner, the side portions are respectively engaged with the end portions of the housing 1.
In this way, by forming a slack in the joint width direction on the joint material and attaching it to the joint material, it is possible to obtain durability by ensuring waterproofness in response to unequal settlement of the continuous frame or displacement due to earthquakes, etc. ing.
[0004]
[Problems to be solved by the invention]
According to such prior art, in the former case, the joint material cannot follow when the frame moves greatly due to an earthquake or unequal subsidence, etc., and the water stop plate is damaged and the original function of the joint is achieved. There is a problem that it cannot be applied, and when the casing moves, there is a problem that the ends of the casing forming the joints collide with each other and are damaged.
[0005]
In the latter case, attaching a long strip-shaped joint material to the housing while forming a slack along the joints is very unsatisfactory, and a uniform slack is uniformly distributed over the entire length in the vertical direction. There is a problem that it is difficult to form. Further, in the case of a water channel, since the slack protrudes, the resistance of the flow is received, the wear of the portion hitting the flow is large, and the stress applied to the attachment portion is also large, resulting in a problem in durability.
[0006]
Furthermore, since the elastic material has a stress relaxation characteristic in which the compressive force decreases with time at a constant displacement, as shown in FIG. The water function will be affected. Furthermore, in order to keep the joints of the joint material soft and to keep the water-stopping performance for a long time, it is necessary to secure the crimping force between the fixing points with bolts, etc. For that purpose, it is necessary to shorten the fixing interval. There is a problem that the nature is very bad.
[0007]
[Means for Solving the Problems]
Therefore, the present invention provides a water-stopping structure in which the joint portion of a continuous box is closed with a joint material to stop water leakage, and the middle part of a long strip made of an elastic material is bent to form a groove-like extra length in the longitudinal direction. part to form the ends of the elastic material in the stress material is embedded one or more layers constitutes the eyes Chizai, the notches each box-body to form a recess elongated portion grooved in the joint member fits formed in part, characterized in that to fix the Rutotomoni excess length portion opposite sides of the locking portion pay extra length portion of the joint member in a recess formed in the joint portion on the wall surface of a box member by a notch contiguous box-body And
[0008]
DETAILED DESCRIPTION OF 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 joint material attached thereto, 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 belt-like joint material, and one or more layers of stress material 9 such as natural fiber, synthetic fiber, metal, etc. are embedded in an elastic body 8 such as natural rubber, synthetic rubber or synthetic resin. In the middle of the longitudinal direction, a groove-like surplus portion 10 having a cross-sectional shape of approximately U, V, W, etc. is formed, and locking portions 11 are formed on both sides of the surplus portion 10. To do. Since the locking portion 11 is required to be strong, it is preferable to increase the amount of the stress material 9 stacked over the extra length portion 10 as necessary.
[0009]
In addition, the stress material 9 may be one in which chains are arranged in the width direction at a predetermined interval in a net shape or in the longitudinal direction. In that case, it is good to embed so that a clearance gap may be formed between each ring which comprises a chain, and an elastic body may exist also in the clearance gap.
Reference numeral 12 denotes a water stopping ridge for increasing the water stopping effect in a state where the locking portion 11 is locked and fixed to the housing 1 and is provided as necessary.
[0010]
When attaching the joint material 7 as described above to the joint portion 13 of the housing 1, a notch 15 is formed at the end of each housing 1 to form a recess 14 in which the groove-like extra length portion 10 of the joint material 7 is received. Keep it.
In addition, if this notch 15 is deepened so that the extra length portion 10 can be accommodated with sufficient margin, when the housing 1 moves due to an earthquake or unequal subsidence, the ends of the notches 15 collide with each other. Even if the battery breaks, a space can be formed so that the broken pieces can be stored. Further, the shape of the notch 15 is not limited to a right-angled shape as shown in the figure, and may be any shape such as a shape in which the concave portion 14 has a funnel shape or a U-shape.
[0011]
Therefore, in order to attach the joint material 7 to the joint portion 13 of the continuous casing 1, as shown in FIG. 1, the joint material 7 is inserted into the recess 14 formed in the joint portion 13 by the notch 15 of the continuous casing 1. The surplus length portion 10 is accommodated, and the locking portions 11 on both sides are attached to the wall surface of the housing 1 by, for example, the locking holes 18 by tightening and fixing the bolts and nuts and the like through the pressing plate 17.
[0012]
Further, as described above, if the number of the stress members 9 stacked on the engaging portion 11 is increased, the compression rigidity can be increased. Therefore, the stress relaxation phenomenon peculiar to the elastic material as shown in FIG. It is possible to suppress a decrease in the pressure-bonding force due to, and to improve the water stoppage and durability over a long period of time.
By attaching the joint material 7 to the joint portion 13 in this way, when the continuous frame 1 is inclined due to unequal subsidence or displacement due to an earthquake or the like, the extra length portion 10 can cope with it, and the joint portion 13 The water-stopping property can be maintained.
[0013]
In addition, the stress material 9 improves the response capability when a tensile stress is applied to the joint material 7 and is not easily damaged, and protects the joint portion 13 against displacement due to unequal settlement of the housing 1 or an earthquake. It can be done reliably.
[0014]
【The invention's effect】
According to the present invention described in detail above, a groove-like surplus portion is formed in the middle in the longitudinal direction of the joint material made of a long belt-like elastic material, and one or more stress materials are embedded in the elastic material. The continuous frame is displaced by placing the extra length part in the recess formed in the joint part of the continuous case and fixing the locking parts on both sides of the extra part to the wall surface of the case. Can be accommodated by the extra length portion, and the water stoppage of the joint portion can be maintained.
[0015]
In addition, because the extra length part and the locking part are formed, the attachment work to the housing becomes easy, the workability of the work is improved, and the compression rigidity is increased by embedding the stress material, 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 housed in a recess formed in the joint part of the frame, the resistance to water is small when used in a 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 is reduced when the water is dry.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a joint material with a joint material attached thereto according to an embodiment. FIG. 2 is a perspective view of the joint material. FIG. 3 is a cross-sectional view of the joint material. 5] Illustration of conventional example [FIG. 6] Graph showing stress relaxation characteristics [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Frame 7 Joint material 8 Elastic body 9 Stress material 10 Surplus length part 11 Locking part 12 Water stop protrusion 13 Joint part 14 Recessed part 15 Notch

Claims (3)

In the water stop structure that stops the water leakage by closing the joints of the continuous box with joints,
Forming a surplus length portion of the groove-like longitudinally middle elastic member made of a long strip by bending mold, constitute the eye Chizai with stress material is embedded one or more layers in the elastic member, A notch that forms a recess that accommodates the groove-like extra length of the joint material is formed at the end of each box, and the extra length of the joint material is formed in the recess formed in the joint by the notch of the continuous box. water shut-off structure characterized in that Rutotomoni excess length portion opposite sides of the locking portion pay a part sticking to the wall of a box body. The water stop structure according to claim 1, wherein a stacking amount of the stress material in the locking portion is larger than that of the extra length portion. The water stop structure according to claim 1, wherein a water stop ridge is formed on the locking portion.

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