KR102461339B1 - A expansion joint water stopper board of concrete structure - Google Patents

Abstract

The present invention relates to an expansion joint water stop of a concrete structure and, more specifically, to an expansion joint water stop of a concrete structure, which can enhance material quality, increase rigidity through reinforcing ribs, and prevent movement from a correct position during concrete pouring through bonding with reinforced rods, thereby improving construction quality. The expansion joint water stop of a concrete structure comprises: a pair of wing parts embedded in one side and the other side of the concrete structures facing each other at the expansion joint of the concrete structure; a hollow elastic part formed between the pair of wing parts to integrate the pair of wing parts and provided to expand according to a change in the width of the gap between the concrete structures; protruding end parts formed on the outermost ends of the wing parts, and protruding from both sides of the wing parts to prevent the wing parts from slipping inside the concrete structure when the elastic part is expanded; a plurality of reinforcing ribs formed between the protruding end part and the elastic part, and protruding from both sides of the wing parts to reinforce rigidity of the wing parts during expansion. The reinforcing ribs are formed to be inclined toward the elastic part. The elastic part includes: a first hollow part; and a second hollow part formed on both wing parts of the first hollow part, based on the first hollow part. The diameter of the first hollow part is formed to be larger than that of the second hollow part.

Description

Expansion joint water stopper board of concrete structure

The present invention relates to an expansion joint stop plate of a concrete structure, and more particularly, a concrete structure that improves rigidity through material improvement and reinforcing ribs, and minimizes breakage by increasing elongation through expansion and contraction parts composed of a plurality of hollow parts It is related to the index plate of the expansion joint.

In general, concrete structures are constructed by placing expansion joints at regular intervals to prevent cracks caused by shrinkage and expansion according to changes in atmospheric temperature or due to uneven settlement imbalance. , random cracks do not occur in the concrete structure itself. For example, when concrete structures such as bridges, subways or underpasses, underground tunnels, agricultural waterway structures, etc. have a wide and thick construction area and long concrete is poured, the construction is carried out with joints at regular intervals. After curing, pour the following interspaces to complete the construction of the entire structure. In the above-mentioned universal inter-interval construction method, after installing a joint filler plate having a certain thickness such as a waterstoper board and a dowel bar at one end, concrete is poured on the surface of the first span. After curing to a certain strength, concrete is poured on the other side of the gap to form the second span surface. In this way, when the concrete is cured in the formwork and it is possible to maintain a certain strength, a universal construction method for connecting the hard steel surfaces is provided.

On the other hand, as described above, the Waterstoper Board (Waterstoper Board, 止水板) installed in areas requiring waterproof construction, such as expansion joints and construction joints of concrete structures, provides an order of magnitude to expansion joints and construction joints when constructing concrete structures. As a member installed for the purpose, it blocks water flowing in and out from the inside or the outside through the gap formed by leaving a certain interval between expansion joints. Although water-repellent plates made of polyvinyl chloride or PVC are widely used, in order to increase leakage prevention efficiency, copper water-repellent plates made by cutting and bending copper plates are installed in important joints of concrete structures. have.

In the expansion joint and construction joint of the concrete structure, as the contraction/expansion of the concrete structure is repeated according to the temperature change of the season, the width of the gap between expansion joints is widened or narrowed repeatedly. The purpose of installation is to block water leakage while interlocking with the movement of the concrete structure according to the change in the gap. On the other hand, as shown in FIG. 1 , the PVC water stop plate has a circular hollow part 20 designed to form a plurality of protrusions 11 on both sides of the generally flat plate-shaped wing part 10 and expand and contract at the center of the water stop plate 20). is formed In order to install the PVC water stop plate at the span expansion joint for the purpose of waterproofing, the water stop plate is interlocked with the half of the water stop plate at the end of the structure constituting the span in the longitudinal direction to install a formwork and pour the span concrete.

On the other hand, in the process of repeating the phenomenon of widening or narrowing the gap of the expansion joint as described above, the PVC water stop plate has weak rigidity, so that the wing portion 10 cannot withstand the low temperature and is damaged such as breaking or tearing. There is a problem of loss of function. In the case of a copper index plate with relatively high rigidity, there is a problem that it is damaged as a result of continuous expansion and contraction action is applied to the bent part, and there is a problem that the material cost is high. In particular, in the conventional PVC water stop plate, since the hollow part 20 is made of one single hollow, there is a problem in that the expansion and contraction action is insufficient.

In addition, the PVC water stop plate has a problem in that it is difficult to position the hollow part 20 in the center of the gap between the expansion joints as it flows by the concrete pouring pressure when pouring concrete after installing the formwork. Accordingly, in the PVC water stop plate, instead of the hollow part 20 for the expansion and contraction action, the wing part 10, which is vulnerable to the expansion and contraction action, is located in the gap of the expansion joint, and the continuous expansion and contraction action is applied to the wing part 10 during the expansion and contraction action of the PVC water stop plate. As it occurs, it is easily damaged and the original function of the PVC index plate is lost.

In addition, underground structures such as subways, underpasses, culverts, and culvert boxes require water plates to be installed all over the top, bottom, left and right. There is a problem in that the entire expansion joint needs to be repaired because it is impossible to find the exact leaking part if a leak occurs at the water stop plate connection part after building the structure.

Republic of Korea Registration No. 20-0304413gh

The present invention has been devised to solve the above problems, and an object of the present invention is to increase the rigidity through NBR material, to form a plurality of hollow parts constituting the expansion and contraction part so that the expansion and contraction action can be effectively performed, and the wing during the expansion and contraction action It is intended to provide an expansion joint water stop plate of a concrete structure that is not easily damaged even if excessive elongation occurs by forming a slope on the reinforcing rib to offset the negative tension.

The present invention, in order to achieve the above object, a pair of wing portions made of embedding construction on one side and the other side of the concrete structure opposed to each other in the expansion joint of the concrete structure; a hollow expansion and contraction part formed between the pair of wing parts to integrate the pair of wing parts and expand and contract according to a change in the gap of the concrete structure; a protruding end formed at the outermost end of the wing, protruding from both sides of the wing to prevent the wing from slipping inside the concrete structure when the expansion and contraction part works; A plurality of reinforcing ribs are formed between the protruding end and the stretchable part, and are formed to protrude from both sides of the wing part to reinforce the rigidity of the wing part during the expansion and contraction action. It is formed of a first hollow part and a second hollow part formed on both wing portions of the first hollow part based on the first hollow part, and the diameter of the first hollow part is larger than the diameter of the second hollow part. Expansion joint stop plate is provided.

At this time, the material preferably includes PVC and NBR (Nitrile Butadiene Rubber).

In addition, it is preferable that binding holes for binding with reinforcing bars are formed at both ends of the wing portion.

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In addition, a connection socket for connecting the water stop plate is provided, and the connection socket includes: a hollow body having connection grooves through which both sides are formed; It is preferable to include a partition for dividing both sides of the connection groove in a direction in which the water stop plate is inserted, wherein the connection groove has a shape corresponding to the outer shape of the expansion and contraction part and the wing part.

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The expansion joint stop plate of the concrete structure according to the present invention has the following effects.

First, the present invention has an effect that the rigidity does not decrease even after long use by being manufactured including PVC (Poly Vinyl Chliride) and NBR (Nitrile Butadiene Rubber) materials.

Second, the present invention can improve elongation by forming the expansion and contraction part formed between a pair of wing parts with a plurality of hollow parts, so that damage such as breakage can be prevented even with the continuous expansion and contraction action. It works.

Third, in the present invention, since binding holes are formed at the ends of both wing portions of the water stop plate, it is possible to restrict the movement of the water stop plate during concrete pouring by arranging the water stop plate inside the formwork. can do. Accordingly, the present invention has the effect that the water stop plate can be installed in the correct position of the structure.

Fourth, the present invention provides a separate connection socket for connection between the water stop plates, thereby preventing the occurrence of a water leakage problem at the joints of the water stop plates, and has the effect of increasing the convenience of connection and construction in the field.

1 is a view showing an expansion joint stop plate of a concrete structure according to the prior art.
2 is a view showing an expansion joint water stop plate of the concrete structure according to the first embodiment of the present invention.
Figure 3a is a perspective view showing a connection socket for connecting the expansion joint water stop plate of the concrete structure according to the first embodiment of the present invention.
Figure 3b is a cross-sectional view showing a connection socket for connecting the expansion joint stop plate of the concrete structure according to the first embodiment of the present invention.
Figure 3c is a perspective view showing a modified example of the connection socket for connecting the expansion joint water stop plate of the concrete structure according to the first embodiment of the present invention.
4 is a view showing an expansion joint water stop plate of a concrete structure according to a second embodiment of the present invention.
5 is a view showing an expansion joint water stop plate of a concrete structure according to a third embodiment of the present invention.
6 is a flowchart illustrating a method of constructing an expansion joint of a concrete structure according to the present invention.

The terms or words used in the present specification and claims are not to be construed as limited in their ordinary or dictionary meanings, and on the principle that the inventor can appropriately define the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention.

Hereinafter, an expansion joint water stop plate (hereinafter referred to as a 'water stop plate') of the concrete structure according to the first embodiment of the present invention will be described with reference to the accompanying FIGS. 2 to 3B.

The water stop plate is installed at the expansion joint of the concrete structure to act as a water barrier, and to flexibly respond to the change in the gap between the expansion joint of the concrete structure, but to increase the rigidity and increase the efficiency of the expansion and contraction operation. It is preferable that the material of the water stop plate includes PVC (Poly Vinyl Chloride) and NBR (Nitrile Butadine Rubber). The water stop plate made of such a material can improve oil resistance, abrasion resistance, aging resistance, and chemical resistance.

As shown in FIG. 2 , the water stop plate includes a stretchable part 100 , a wing part 200 , a protruding end part 300 , and a reinforcing rib 400 .

The expansion and contraction part 100 constitutes the center of the water stop plate, and is configured to expand and contract so that the water stop plate is not damaged when the gap between the expansion joints of the concrete structure is changed. The stretchable part 100 is provided in the form of a hollow in order to increase the efficiency of the stretchable action, as shown in FIG. 2 . As described above, by providing a plurality of hollow expansion and contraction parts 100 , it is possible to effectively prevent the water stop plate from being damaged as well as the water blocking effect even when the distance between the expansion joints of the concrete structure is greatly increased due to excellent elongation. The stretchable part 100 is provided in a pair of the same size, and preferably has an oval shape. When the stretchable part 100 is pulled to both sides in the process of opening the gap of the concrete structure, the pair of stretchable parts 100 expands at the same rate of expansion, so that the expansion tension of the pair of expansion and contraction parts 100 is Since it is dispersed in the part 100, the expansion and contraction action of the water stop plate can be performed smoothly and flexibly.

The wing part 200 constitutes both sides of the water stop plate, and is respectively formed on both sides of the stretchable part 100 . The wing part 200 is a configuration to be embedded in the concrete structure facing each other, and is configured to interlock with the concrete structure when the gap between the concrete structures is changed. The wing portion 200 is preferably formed of a flat panel having a smaller thickness than the inner diameter of the stretchable portion 100 . At this time, binding holes 210 are formed at both ends of the wing portion 200 . The binding hole 210 is a configuration provided for binding with the reinforcing bar, and it is preferable that there are a plurality in the height direction of the wing part 200 . When pouring concrete into a formwork for concrete structure construction, it is important that the water stop plate is guided in the correct position without flowing by the pouring pressure. This is to prevent the index plate from being affected.

The protruding end portion 300 serves to ensure that the wing portion 200 of the water stopper is firmly constructed in the concrete structure, and is formed at each end of the pair of wing portions 200 . The protruding end portion 300 is formed to be thicker than the thickness of the wing portion 200 in order to strengthen the binding force when concrete is poured. When the gap between the expansion joints of the concrete structure is widened, the protruding end 300 is moved together with the concrete structure to provide tension to the water stop plate. In addition, the protruding end portion 300 may prevent the wing portion 200 from slipping when the concrete structure moves according to the change in the gap between the expansion joints of the concrete structure.

The reinforcing rib 400 serves to reinforce the rigidity of the wing 200 and prevent the wing 200 from slipping when the concrete structure moves according to the change in the gap between the expansion and contraction joints of the concrete structure. The reinforcing rib 400 is formed to protrude toward both sides from the wing portion 200 , and a plurality of reinforcing ribs are formed between the stretchable portion 100 and the projecting end portion 300 . As shown in FIG. 2 , the reinforcing rib 400 is preferably composed of an inclined rib 410 and a vertical rib 420 . The inclined rib 410 may increase the binding force with the concrete structure, and may increase the tension of the water stop plate when the gap between the concrete structure is widened. At this time, the inclined rib 410 is inclined toward the stretchable portion 100 . In addition, the vertical rib 420 serves to increase the rigidity of the wing portion 200 together with the inclined rib 410 and to increase the bonding force with the concrete structure. The vertical ribs 420 are preferably formed between the inclined ribs 410 . The reinforcing rib 400 of this configuration allows the inclined ribs 410 to receive more force when the gap between the concrete structures is widened, and allows the vertical ribs 420 to receive more force when the gap between the concrete structures is narrowed. made it possible

Hereinafter, a method of manufacturing the water stop plate having the above configuration will be described as follows. First, a pair of core members are provided, and a synthetic resin is injected into an extrusion mold having a groove corresponding to the exterior of the water stop plate, and an injection pressure is continuously supplied to the synthetic resin injected into the extrusion mold. At this time, the molded water stop plate is discharged through the discharge hole of the extrusion mold. Thereafter, as the series of extrusion processes proceeds, a long panel or a long band-shaped water stop plate is continuously produced and supplied, and a press device is driven toward the continuously supplied stop plate to maintain a constant interval at both ends of the stop plate and bind holes. to mold

Meanwhile, a connection socket 500 for connecting a plurality of water stop plates is provided. The connection socket 500 is a medium that can connect the water stop plate when constructing a concrete structure with a closed slope such as an underpass or a tunnel. That is, as there is a limit to integrating the water stop plate, a plurality of water stop plates can be connected through the connection socket 500 to be constructed. As shown in FIGS. 3A and 3B , the connection socket 500 is preferably composed of a body 510 and a partition 520 . The body 510 forms the exterior of the connection socket 500 and forms connection grooves 511 through which both sides are penetrated. The connection groove 511 is provided for inserting the water stop plate, and the connection groove 511 has a shape corresponding to the outer circumferential surface of the water stop plate along the inner circumferential surface. That is, the connection groove 511 is formed to correspond to the exterior of the water stop plate. The partition 520 serves to guide the position of the water stopper inserted from both sides of the connection socket 500 . That is, the partition 520 is configured to accurately guide the insertion position of the water stop plate while serving as a stopper for limiting excessive insertion of the water stop plate into the connection groove 511 . The partition 520 is formed in the center of the connection groove 511 to partition both sides of the connection groove 511 . Meanwhile, the connection socket 500 may be configured in a 'T' shape as shown in FIG. 3C .

The shape of the water stop plate can be provided in various ways, and the water stop plate according to the second embodiment will be described with reference to FIG. 4 . The same reference numerals are used for the same components as those of the first embodiment.

The water stop plate is configured in plurality in order to increase the expansion and contraction efficiency of the stretchable part 100 , and is provided as the stretchable part 100 with different diameters. The stretchable part 100 is composed of a first hollow part 110 and a second hollow part 120 as shown in FIG. 4 . The first hollow part 110 is formed in the center of the water stop plate, and the second hollow part 120 is formed on both sides of the first hollow part 110 and is formed smaller than the diameter of the first hollow part 110 . By configuring the hollow sizes of the expansion and contraction parts 100 differently in this way, when the gap between the expansion joints of the concrete structure is relatively small, the expansion and contraction action of the second hollow part 120 is covered, and the gap between the concrete structures is relatively large. When it opens, the expansion and contraction action of the water stop plate can be effectively made by making the expansion and contraction action of the first hollow part 110 tolerable.

With reference to FIG. 5, a water stop plate according to a third embodiment of the present invention will be described. The same reference numerals are used for the same components as those of the first embodiment.

As shown in FIG. 5 , a locking protrusion 130 is formed in the expansion and contraction part 100 of the water stop plate. The locking protrusion 130 prevents the expansion and contraction part 100 from expanding more than necessary when the concrete structure opens to both sides as the gap of the concrete structure widens, so that the expansion pressure pulling the water stopper is distributed to the wing part 200 . serves to enable That is, the locking protrusion 130 prevents the expansion and contraction part 100 from being damaged when the expansion tension generated when the gap between the expansion joints of the concrete structure is excessively widened exceeds the elongation of the expansion and contraction part 100 . it is for The locking protrusion 130 is formed to protrude outward from both sides of the stretchable and contractible part 100 , and is preferably formed to correspond to each hollow part.

Hereinafter, a concrete structure construction method using an expansion joint water stop plate of a concrete structure having the above configuration will be described with reference to FIG. 6 . At this time, the concrete structure will be described with an example that the upper part is an open water channel.

In the case of constructing a long concrete structure, the expansion coefficient is taken into account and the concrete structure is divided into intervals and constructed at regular intervals. to prevent

First, the floor plate formwork of the concrete structure is installed, and (S100) reinforcing bars corresponding to the floor plate and the wall are reinforced in the formwork. (S200) At this time, the reinforcing bars are bent in a 'C' shape corresponding to the floor board and the wall. is dispatched

Next, the operator installs the water stop plate at a position corresponding to the expansion joint of the concrete structure. (S300) At this time, the water stop plate is installed along the reinforcing bar in a 'c' shape while being guided by the support frame. Thereafter, the operator binds the binding hole 210 of the water stop plate with the reinforcing bar using a wire to restrict the movement of the water stop plate.

Next, the worker pours concrete into the formwork and cures it. (S400) At this time, the reinforcing bar and the water stop plate are embedded in the bottom plate of the concrete structure and are exposed in a vertical direction to correspond to the wall of the concrete structure. .

Next, the worker erects and installs the formwork on one side and the other side of the wall for the construction of the wall of the concrete structure. (S500)

Next, the operator pours concrete on the sidewall formwork. (S600) At this time, since the water stop plate is bound to the reinforcing bar, even if the concrete pouring pressure occurs, the water stop plate does not move.

After that, the construction is completed by curing the concrete. (S700)

On the other hand, in the case of a concrete structure having a closed perimeter such as an underpass or a tunnel, the operator connects the water stop plate using the connection socket 500 . A worker may connect a plurality of water stop plates by applying adhesive means such as silicone or adhesive to the inside of the connection groove 511 and the water stop plate of the connection socket 500, and then inserting and bonding the water stop plate into the connection groove 511. .

As described so far, the water stop plate at the expansion joint of the concrete structure according to the present invention reinforced the rigidity by improving the material, and the expansion pressure applied to the water stop plate through the reinforcing ribs during the expansion and contraction action of the water stop plate was distributed to prevent damage to the water stop plate. In addition, the present invention binds the water stop plate to the reinforcing bar through the binding hole to prevent movement during concrete pouring, so that the construction quality according to the in-place construction of the water stop plate can be improved.

Although the present invention has been described in detail with respect to the described embodiments, it is obvious to those skilled in the art that various modifications and variations are possible within the scope of the technical spirit of the present invention, and it is natural that such variations and modifications belong to the appended claims.

100: stretchable part 110: first hollow part
120: second hollow 130: locking protrusion
200: wing 210: binding hole
300: protruding end 400: reinforcing rib
410: inclined rib 420: vertical rib
500: connection socket 510: body
511: connection groove 520: partition

Claims (7)

A pair of wing portions in which the embedding construction is made on one side and the other side of the concrete structure opposite to each other at the expansion joint of the concrete structure;
a hollow expansion and contraction part formed between the pair of wing parts to integrate the pair of wing parts and expand and contract according to a change in the gap of the concrete structure;
a protruding end formed at the outermost end of the wing, protruding from both sides of the wing to prevent the wing from slipping inside the concrete structure when the expansion and contraction part works;
A plurality of reinforcing ribs are formed between the protruding end and the stretchable part, and are formed to protrude from both sides of the wing part to reinforce the rigidity of the wing part during the expansion and contraction action,
The reinforcing rib is formed to be inclined toward the stretchable part,
The stretchable part is formed of a first hollow part and a second hollow part formed on both wing portions of the first hollow part based on the first hollow part, and the diameter of the first hollow part is formed to be larger than the diameter of the second hollow part. Expansion joint stop plate of concrete structure. The method of claim 1,
Expansion joint water stop plate of concrete structure, characterized in that the material includes PVC and NBR (Nitrile Butadiene Rubber). 3. The method of claim 1 or 2,
Expansion joint water stop plate of a concrete structure, characterized in that binding holes for binding with reinforcing bars are formed at both ends of the wing. delete 3. The method of claim 1 or 2,
A connection socket is provided for connecting the water stop plate, and the connection socket is
a hollow body having a connection groove through both sides;
It includes a partition dividing both sides of the connection groove in the direction in which the water stop plate is inserted,
The connection groove is an expansion joint water stop plate of a concrete structure, characterized in that it has a shape corresponding to the outer shape of the expansion and contraction part and the wing part. delete delete

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