KR101084668B1 - Mono cell type flexible connecting device with excellent adhesive power - Google Patents

Abstract

PURPOSE: A mono-cell type expansion joint system having excellent adhesive power with concrete is provided to control noise when a vehicle travels by preventing gaps between wavy adhesive protrusions and post-placed concrete from being generated. CONSTITUTION: A mono-cell type expansion joint system(M) having excellent adhesive power with concrete comprises wavy adhesive protrusions(10), a replaceable mono-cell(20), and a fixed mono-cell(30). The wavy adhesive protrusions are consecutively formed on the outer surface of upper plates in a longitudinal direction and are integrally interlocked with post-placed concrete. The replaceable mono-cell has a pair of upper plates(21), upper side plates(24), and an upper expansion material(25). The upper side plates are integrally attached on the bottom of the upper plates. The upper expansion material is fixed between the upper side plates. The fixed mono-cell has a pair of lower side plates(32) and a lower expansion material(33). The lower expansion material is fixed between the lower side plates.

Description

Mono cell type flexible joint device with excellent adhesive power

The present invention increases the adhesion between the top plate and the futa concrete of the monocell type expansion joint installed in the joint of the bridge to reinforce structural strength as well as suppress the noise generation, the monocell type expansion joint is damaged after construction When it is old, it relates to a technology that can easily replace only the damaged part.

In general, the joints of the upper plate structure constituting the bridge are expanded and contracted due to temperature change, creep, shrinkage and rotation of the vehicle during rotation, and such joints are usually provided with expansion joints. It compensates for the smooth traffic of the vehicle, and prevents rainwater from entering the substructure to prevent aging of the bridge.

The expansion joint device directly affects the safety and durability of the corresponding structure, and is the most frequent element of breakage and replacement among the entire structure of the structure, and should be able to exhibit excellent performance.

As a representative example of such expansion joints, monocell type expansion joints have been proposed, and the monocell type expansion joints are made of rubber, so that the shock absorbing effect is very good and the flow is narrow, providing excellent driving performance. There is a characteristic.

As shown in FIG. 8, the conventional monocell expansion joint device 1 includes a pair of side plates 3 on both bottom surfaces of the road surface rubber 2 having a V-shaped expansion groove 2a formed at the center thereof. Inserted and installed, the lower rubber 4 is connected to the lower inner side of the side plate 3, a plurality of anchor bars (5) on the outer surface of the side plate 3 in a configuration that is welded or screwed at intervals Is done.

Conventional monocell type expansion joint device (1) having such a configuration is placed in the joint between the spaced apart bridge top plate and then reinforcing the rebar welded to the installation portion of the anchor bar (5), the sequential cement By placing (7), the bridge deck is connected.

However, in the conventional monocell type expansion joint 1, both sides of the road surface rubber 2 are formed in a straight plane, respectively, as shown in FIG. 9, so that the adhesion force with the futa concrete 7 is very weak, so that the futa concrete 7 ) Gap between the road surface rubber and the road surface rubber, and this gap creates a very large noise during driving of the vehicle, and the road surface rubber (2) is easily damaged by lifting upwards, and its structural strength is weak. Problem is caused.

In addition, the monocell-type expansion joint device (1) is frequently worn and damaged, and after a period of about 5 to 10 years after construction is required to be repaired or replaced at any time, in the prior art, the Futa concrete (7) as a whole, completely crushed After dismantling, the entire existing monocell type expansion joint (1) must be removed, which takes much time and money due to replacement work and causes noise pollution and traffic obstacles, causing enormous social and economic losses and inconveniences. This is caused.

In addition, the monocell-type expansion joint device (1) is usually installed in various lengths according to the width of the bridge, it is usually necessary to connect continuously in the longitudinal direction, conventionally the device for connecting the monocell-type expansion joint device in the longitudinal direction is It is not properly presented.

The present invention is to actively solve all the problems of the monocell type expansion joint according to the prior art described above, while the corrugated attachment protrusion formed on the outer surface of the top plate and the futa concrete interlocking to increase the adhesion between each other It is to be an object of the invention.

In addition, the present invention is to solve the problem that only the replacement monocell assembled to the upper part of the fixed monocell can be replaced partly quickly and easily.

In addition, the present invention provides a simple method of assembling the connecting brackets attached to both sides of the side plate of the monocell type expansion joint device integrally with each other so that the monocell type expansion joint can be continuously connected in the longitudinal direction. do.

As a means for solving the above problems, the present invention seeks a technique for continuously forming the corrugated protrusions on the outer surface of the pair of upper plates on both sides of the monocell type expansion joint.

In addition, the present invention is attached to each of the upper side plate on the bottom of the upper plate, but each of the bottom of the upper side plate formed recessed grooves, between the upper side plate between the upper and the elastic material formed in the upper and lower elastic groove integrally crimp fixed fixed In the meantime, the replacement monocell and the fixed monocell assembled with the replaceable monocell are integrated between the pair of lower side plates spaced apart from the lower elastic member having the elastic groove formed at the bottom thereof. Press-fixed and fixed to the upper end of the lower side plate to find a technique for protruding the binding projection to be fitted into the binding groove.

In addition, the present invention devises a technique of integrally attaching the connecting brackets to each of the longitudinal side of the lower side plate, the connecting brackets integrally with other adjacent connecting brackets.

According to the present invention, the corrugated attachment protrusions formed on the outer surface of the upper plate make continuous interlocking with the futa concrete, thereby reinforcing the structural strength by remarkably increasing the mutual strength, thereby improving durability, and improving the durability with the futa concrete and the corrugated attachment protrusion. Since there is no gap between them, it provides the effect of suppressing noise generation when the vehicle is running.

In addition, when the monocell expansion joint is damaged or aging after construction, only the replacement monocell can be replaced quickly and easily, thereby drastically reducing the time and cost associated with the replacement operation of the expansion joint, and reducing noise pollution and traffic obstacles. Provides the effect of minimizing.

In addition, by simply and continuously connecting the mono-cell expansion and contraction in the longitudinal direction provides an effect of improving the workability and construction quality that can be tailored to fit the width of the bridge.

1 is an exploded perspective view of a monocell type expansion joint applied to the present invention
Figure 2 is a plan view of the construction state of the present invention monocell type expansion joint device
Figure 3 is a longitudinal cross-sectional view of the present invention monocell expansion joint device
Figure 4 is an enlarged cross-sectional view of the separation state of the replaceable monocell and the fixed monocell of the present invention
5 is an enlarged cross-sectional view of a state in which the replacement monocell of the present invention partially replaced construction
Figure 6 is a perspective view separated in the longitudinal direction of the present invention monocell type expansion joint device
Figure 7 is a longitudinal cross-sectional side view of the present invention monocell type expansion joint device
8 is a perspective view of a conventional monocell type expansion joint device
9 is a plan view of the construction state of a conventional monocell expansion joint device

Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

Looking at the overall technical configuration of the mono-cell expansion joint (M) according to a preferred embodiment of the present invention based on the accompanying drawings, the mono-cell expansion joint is installed on the joint 6 between the bridge top plate ( In M),

Waveform attachment protrusions 10 are continuously formed on the outer surface of the upper plate 21 of the monocell type expansion joint M in the longitudinal direction, respectively, and the waveform attachment protrusions 10 are integrated with the futa concrete 7. It can be seen that the interlocking is performed continuously.

Hereinafter, the present invention having the above-described schematic configuration will be described in more detail for facilitating the implementation.

The corrugated attachment protrusion 10 has a very weak adhesive force with the futa concrete 7 when the outer surface of the upper plate 21 is formed in a straight plane, so that a gap is generated between the futa concrete 7 and the upper plate 21. In order to effectively prevent the box, as formed continuously on the outer surface of the upper plate 21 as shown in Figs. 1 to 2 to achieve the interlocking integrated with the futa concrete (7) and at the same time the contact area between each other is expanded The adhesion can be increased.

Therefore, the upper plate 21 is prevented from being lifted to the upper part, thereby enhancing the overall structural strength and improving durability, as well as preventing the occurrence of a gap between the futa concrete 7 and the corrugated attachment protrusion 10. It provides a special effect to reduce noise when driving.

On the other hand, the monocell-type expansion joint device (M) of the present invention is additionally grafted with a technical configuration to partially replace the replacement monocell 20 corresponding to the part that is actually aged or damaged by being exposed to the road surface. , Monocell type expansion joint device (M) for this is composed of an organic coupling configuration of the replaceable monocell 20 and the fixed monocell (30).

As shown in FIGS. 1 to 4, the replaceable monocell 20 has a pair of top plates 21 spaced apart from each other, but the anchor plates 22 are spaced in the front and rear directions in the top plate 21. The upper side plate 24 is formed integrally attached to the bottom surface of the upper plate 21, the recessed groove 23 is formed in the lower end.

In addition, the upper elastic member 25 having the V-shaped elastic groove 25a formed on the upper end is integrally compressed between the upper side plates 24 so that the upper elastic member 25 is stretched according to the elastic action of the upper elastic member 25. ) And the upper side plate 24 are free to move horizontally, respectively.

Here, the pair of top plates 21 are formed to have a noise reduction waveform projection 26 on the inner surface facing each other to avoid the inner surface is formed in a straight line, the noise reduction waveform projection 26 is in the interlocking state Since the upper plate 21 moves inward, the noise is reduced and the shock generated during the contact is reduced by being formed to face each other.

In addition, the anchor fixing hole 22 is fitted with a known strong anchor 8 embedded in the bridge top plate 5 as shown in FIG.

The fixed monocell 30, which is assembled and assembled with the replaceable monocell 20 up and down integrally, has a pair of lower side plates protruding from an upper end of the binding protrusion 31 fitted into the binding groove 23. 32 is spaced apart from each other, and the lower elastic member 33, which is formed at the lower end between the lower side plate 32 and the mountain-shaped expansion grooves 33a are integrally compressed and fixed to the elastic action of the lower elastic member 33. Accordingly, the lower side plate 32 is free to move horizontally.

Therefore, through the organic assembly between the binding protrusions 31 and the binding grooves 23, the replacement monocell 20 and the fixed monocell 30 can be newly constructed by maintaining the unity with each other. Only replaceable monocell 20 can be partially replaced as shown in FIG.

In addition, the upper elastic member 25 and the lower elastic member 33 may be molded using a good elastic rubber as the raw material, or urethane as the raw material.

In addition, a plurality of anchors 35 are integrally attached to the outer surface of the lower side plate 32 at intervals so that the anchors 35 remain embedded in the futa concrete 7 as the anchoring mono. The cell 30 can sustain a more firm anchoring force.

The monocell type expansion joint device (M) of the present invention having such a configuration is further provided with expansion joint connecting means 40 to be easily connected continuously along the longitudinal direction of each other.

6 and 7, the connecting means 40 for this purpose is integrally formed with an angled connection bracket 41 on both sides in the longitudinal direction of the lower side plate 32 constituting the fixed monocell 30, as shown in FIGS. The fastening bolt 42 penetrates the connecting bracket 41 while being in close contact with the connecting bracket 41 attached to another adjacent fixed monocell 30. The nut is connected to the fastening bolt 42. Combination of the 43 makes it possible to maintain mutually solid integrity.

Therefore, the monocell type expansion joint (M) according to the width of the bridge to provide an effect that can be connected more quickly and simply in a tailored construction along the longitudinal direction.

M, 1: Monocell type expansion joint 5, 35: Anchor bar
5: Bridge deck 7: Futa concrete
8: strong anchor 10: corrugated protrusion
20: replaceable monocell 21: top plate
22: anchor fixing hole 23: binding groove
24: upper side plate 25: upper stretch material
26: noise reduction waveform projection 30: fixed monocell
31: binding protrusion 32: lower side plate
33: lower elastic member 40: expansion joint connecting means
41: Connecting bracket 42: Tightening bolt

Claims (5)

In the monocell type expansion joint device M provided in the joint portion 6 between the bridge top plates 5,
On the outer surface of the upper plate 21 of the monocell type expansion joint (M), the corrugated attachment protrusions 10 are continuously formed along the longitudinal direction, respectively, and the corrugated attachment protrusions 10 are integrated with the futa concrete 7. Monocell type expansion joint excellent in adhesion with concrete, characterized in that the interlocking (continuous).
The method of claim 1,
Monocell type expansion joint (M),
A plurality of anchor fixing holes 22 are formed at intervals on the pair of upper plates 21 spaced apart from each other, and an upper side plate 24 having recessed grooves 23 recessed at a lower end of the upper plate 21 is formed at an interval. A monolithic replaceable monocell 20, which is integrally attached to each other, and between the upper side plates 24, an upper elastic member 25 having an elastic groove 25a formed on an upper end thereof is integrally crimped;
A pair of lower side plates 32 formed at the upper end of the binding protrusions 31 fitted into the binding grooves 23 are spaced apart from each other, and an elastic groove 33a is formed at the lower end between the lower side plates 32. Monocell type expansion joint having excellent adhesion with concrete, characterized in that the lower elastic member 33 is made of a fixed monocell 30, which is fixed and crimped integrally.
The method of claim 2,
The pair of upper plate 21 is monocell type expansion joint having excellent adhesion with concrete, characterized in that the noise reduction waveform projections 26 facing each other in engagement with the inner surface facing each other integrally formed.
The method of claim 2,
The upper elastic member 25 and the lower elastic member 33 is a monocell type expansion joint having excellent adhesion with concrete, characterized in that molded from rubber or urethane as a material.
The method of claim 2,
The fixed monocell 30 has an angled connection bracket 41 integrally attached to both sides of the lower side plate 32 in the longitudinal direction, and the connection bracket 41 is connected to another adjacent fixed monocell 30. A monocell type expansion joint having excellent adhesion with concrete, characterized in that the expansion joint is connected to the coupling bracket 41 and the fastening bolts 42 and are integrally assembled.

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