KR20210009571A - Rail type expansion joint and repair method using of the same - Google Patents

Abstract

The present invention relates to a rail type expansion joint apparatus which enables repair construction for each lane to allow vehicles to pass through other lanes while one lane is repaired, thereby mitigating vehicle passage inconvenience caused by repair construction of a bridge and minimizing a traffic jam. The rail type expansion joint apparatus includes: a fixture fixedly installed on an expansion joint part of the bridge having a joint gap; a pair of profiles arranged on an upper side of the fixture to face each other and including a plurality of profile units spaced apart from each other in a longitudinal direction; an elastic member connecting the pair of profiles; and a plurality of couplers connecting the profile units spaced apart from each other.

Description

Rail type expansion joint and repair method using of the same}

The present invention relates to a rail-type expansion joint device and a repair method thereof, and more particularly, to a rail-type expansion joint device and a repair method thereof installed in the expansion joint of a bridge in which oil gaps are formed.

In general, in relatively large structures such as bridges, deformation stress is applied to various causes such as temperature change, creep, drying and shrinkage, construction errors, loads, earthquakes and ground subsidence, and rotation. In order to solve this problem, a joint gap, which is a gap that is spaced at each predetermined section, is formed, and a separate expansion joint is installed in the joint gap.

In particular, the bridge is composed of a plurality of piers and a plurality of slabs that are seated on the top of the pier to form a road, and a proper clearance to accommodate the dynamic behavior of both top slabs at the connection part between the top slabs and the top slabs. A joint gap is formed with the width of.

In addition, while allowing the vehicle to run in the above joint gap, rainwater or various foreign substances are introduced through the joint gap to safely fall into the lower facilities, and this is called an expansion joint.

Such an expansion joint has an expansion and contraction function and a sealing function, and there are a rail type, a finger type, a mono cell type, etc. depending on the shape.

Here, rail-type expansion joints are widely used in relatively large long bridges where the allowable expansion and contraction amount is large due to the wide gap between the joints, and a pair of bridges installed to face each other. It consists of a profile, a rubber seal in the shape of a V (V) that interconnects the profile, and a reinforcing anchor coupled to the lower side of the profile. According to the above configuration, the rail joint is characterized in that it can absorb the movement and impact that occurs when the dynamic behavior of both upper plates in the left and right directions between a pair of adjacent bridge upper plates.

In this regard, Korean Utility Model No. 20-0418579 (registered on June 5, 2016) discloses a rail-type expansion joint, the rail-type expansion joint is installed in the joint gap of the structure so that the structure is dynamic. A pair of fixed non-shrinkable concrete parts first provided in a rectangular shape at the upper corners opposite the joint gaps and the upper corners of the non-shrink concrete parts on both sides of the joint gap while receiving the behavior It characterized in that it comprises a rail profile and a seal provided between the pair of profiles.

The rail-type expansion joint device as described above is a structure in which a rectangular profile is integrally formed, and during repair work, only the part corresponding to the construction section is cut to perform the repair work, and when the construction is completed, the profile is cut again. The part is welded.

Accordingly, the rail-type expansion joint device as described above has a problem in that it takes a lot of work man-hour and work time due to the cutting and welding work of the profile during maintenance, and the welded profile after one cut is subject to leakage, corrosion, and damage. There is a problem that arises.

The present invention was conceived to solve the problems of the prior art as described above, and an object of the present invention is to provide a rail-type expansion joint device and a repair method thereof, which are easy to repair for some sections of a bridge and repair according to constriction between oils. .

According to an aspect of the present invention, a fixture fixedly installed on the expansion joint of the bridge in which the oil gap is formed; A pair of profiles disposed to face each other on the upper side of the fixture and including a plurality of profile units spaced apart in a longitudinal direction; An elastic member connecting between the pair of profiles; And a plurality of couplers connecting the profile units spaced apart from each other.

In addition, the coupler may be disposed at a boundary between adjacent lanes.

In addition, the coupler may include an insertion support portion inserted between the profile units spaced apart, and a fastening portion connected to the insertion support portion and fastened to the profile unit.

In addition, the insertion support portion may have inclined surfaces on both sides, and the inclined surface of the coupler may be in surface contact with the profile unit.

In addition, the profile unit has a plurality of long holes disposed in the throttling direction, is connected to the profile unit, passes through the long hole, and a connection member that slidably connects the profile unit to the fixture in a throttling direction. It may further include.

In addition, the rail-type expansion joint device may further include a spacer inserted into the inner space of the long hole and disposed on at least one side of the fastening bolt.

In addition, the rail-type expansion joint device may further include a spacer partially inserted into the inner space of the long hole and the other part covering the upper surface of the profile unit adjacent to the long hole.

In addition, in the maintenance method of the rail-type expansion joint device, the steps of dividing both sides of the first section and the second section based on the coupler; A first step of removing futa concrete in the vicinity of the first section and the coupler; A second step of disassembling the coupler from the profile unit; A third step of adjusting the position of the profile unit located in the first section; A fourth step of re-placement of futa concrete in the first section; A fifth step of removing futa concrete in the second section; A sixth step of adjusting the position of the profile unit located in the second section; A seventh step of assembling the coupler to the profile unit; And an eighth step of re-placement of futa concrete in the second section.

In addition, the third and sixth steps may include removing spacers disposed in long holes of the profile unit; Adjusting the position by sliding the profile unit in the throttle direction; And relocating the spacer in the long hole.

In the rail-type expansion joint repair method according to the present invention, it is possible to repair and construct each lane, thereby reducing the inconvenience of vehicle traffic due to the repair and construction of the bridge by allowing the vehicle to pass through another lane while repairing one lane. It can minimize the slip phenomenon.

In addition, the rail-type expansion joint device according to the present invention has a structure in which the profile unit and the inclined surface of the coupler are closely contacted and sealed by a gasket, so that a plurality of profile units can be more firmly connected, and the watertightness of the connection part Can increase.

1 is a plan view of a rail type expansion joint according to an embodiment of the present invention.
Figure 2 is a side view showing a state in which the rail-type expansion joint according to an embodiment of the present invention is installed.
3 is an enlarged perspective view illustrating a state in which a coupler is inserted into a profile unit in a rail-type expansion joint according to an embodiment of the present invention.
4 is an enlarged plan view showing a state in which a coupler is inserted into a profile unit in a rail-type expansion joint according to an embodiment of the present invention.
5 is a side view of FIG. 4.
6 is a plan view showing a coupler of a rail-type expansion joint according to an embodiment of the present invention.
7A is a plan view showing a first example of a spacer of a rail type expansion joint according to an embodiment of the present invention.
7B is a plan view showing a second example of the spacer of the rail-type expansion joint according to an embodiment of the present invention.
7C is a sectional view taken along AA′ of FIG. 7B.
8 is a flow chart showing a maintenance method of the rail-type expansion joint according to an embodiment of the present invention.
9 is a flowchart illustrating detailed steps of steps S300 and S600 in FIG. 8.
10A to 10D are plan views showing a state in which the rail-type expansion joint device is installed in steps shown in FIG. 8.
11A to 11C are side views illustrating a state in which the rail-type expansion joint device is installed in steps shown in FIG. 8.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings. In addition, terms or words used in this specification and claims should not be construed as being limited to a conventional or dictionary meaning, and the inventor appropriately defines the concept of terms in order to describe his own invention in the best way. Based on the principle that it is possible, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention. In addition, in describing the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the subject matter of the present invention will be omitted.

Hereinafter, a rail-type expansion joint device 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7C.

1 is a plan view of a rail-type expansion joint device according to an embodiment of the present invention, Figure 2 is a side view of a rail-type expansion joint device according to an embodiment of the present invention, and Figure 3 is an embodiment of the present invention. Is an enlarged perspective view showing a state in which the coupler is inserted into the profile unit in the rail-type expansion joint device, and FIG. 4 is an enlarged view of a state in which the coupler is inserted into the profile unit in the rail-type expansion joint device according to an embodiment of the present invention. 5 is a side view of FIG. 4, and FIG. 6 is a plan view showing a coupler of a rail-type expansion joint according to an embodiment of the present invention, and FIG. 7A is A plan view showing a first example of a spacer of a rail-type expansion and contraction device, FIG. 7B is a plan view showing a second example of a spacer of the rail-type expansion and contraction device according to an embodiment of the present invention, and FIG. 7C is FIG. 7B. It is a sectional view of AA' of.

Referring to FIG. 1, the rail-type expansion joint device 1 includes a fixture 100, a pair of profiles 200, an elastic member 300, and a coupler 400.

1 and 2, the fixture 100 is installed on the expansion joint of a bridge in which an oil gap is formed. More specifically, the fixture 100 is fixedly installed at corresponding ends of two upper slabs facing each other with a gap of the bridge. The fixture 100 may be illustrated as an anchor member. However, the fixture 100 is a support structure embedded in concrete, and does not limit its shape. It is disposed on a pair of profiles 200 on the upper side of the fixture 100.

Referring to FIG. 2, the pair of profiles 200 are disposed to face each other. In this case, the pair of profiles 200 includes a plurality of profile units 210 spaced apart in the longitudinal direction.

The profile unit 210 may include a horizontal member 2101 facing the fixture 100 and a vertical member 2102 vertically connected to the horizontal member 2101. At this time, the vertical member 2102 may have a wedge formed toward the gap.

The profile unit 210 may have a plurality of long holes 210h disposed in the horizontal member 2101 in the direction of the cross axis. In this case, the profile unit 210 may further include a connection member 211 connected to the fixture 100 while sliding in the long hole 210h. In this case, the profile unit 210 may slide the upper side of the fixture 100 in the direction of the bridge axis.

The profile unit 210 is movable by the length of the long hole 210h in the bridge axis direction, so that even when the gap of the bridge is narrowed, the gap with the facing profile unit 210 may be compensated and adjusted.

The profile unit 210 may further include a spacer 212 inserted into the inner space of the long hole 210h and disposed on at least one side of the connecting member 211. At this time, referring to FIG. 7A, the spacer 212 fixes the position of the connecting member 211 in the inner space of the long hole 210h, and while the concrete is being poured, the concrete is inside the long hole 210h. Prevent entry into In this case, the spacer 212 may be disposed in a long hole 210h located at a portion overlapping with the coupler 400, that is, a long hole 210h formed at an end of the profile unit 210.

Meanwhile, the spacer 213 is partially inserted into the inner space of the long hole 210h, and a part of the spacer 213 covers the upper surface of the profile unit 210 adjacent to the long hole 210h, as shown in FIGS. 7B and 7C. I can. In this case, the spacer 213 may be disposed in a long hole 210h located at a portion not overlapping with the coupler 400.

The elastic member 300 connects the pair of profiles 200 facing each other. At this time, both sides of the elastic member 300 are supported by a wedge formed on the vertical member 2102 of the profile unit 210.

The coupler 400 connects the profile units 210 spaced apart in the longitudinal direction. In this case, the coupler 400 may be inserted and installed between the profile units 210 spaced apart. The coupler 400 may include an insertion support part 410 and a fastening part 420.

The coupler 400 may be disposed between different lanes of the bridge. That is, an n lane may be located on one side of the coupler 400 and an n+1 lane may be located on the other side.

Referring to FIG. 3, the insertion support part 410 is inserted between the profile units 210 spaced apart from each other. In this case, the profile unit 210 may be inclined so that the ends facing each other become closer toward the gap side. Meanwhile, the insertion support part 410 may have inclined surfaces 411 on both sides, and the inclined surface 411 may be in surface contact with the end of the profile unit 210. In this case, it is preferable that the long width of the insertion support part 410 is formed equal to the maximum separation distance of the profile unit 210.

The fastening part 420 is connected to the insertion support part 410 and is coupled to the separated profile unit 210.

5 and 6, the fastening part 420 may include a bending plate 421, a plurality of fastening holes 422, and a plurality of fastening bolts 423. In this case, the bent plate 421 may have an L-shaped shape and may be bonded to one surface of the insertion support part 410. In addition, the plurality of fastening holes 422 may be formed on one surface of the bent plate 421 that is joined to the insertion support part 410. The plurality of fastening bolts 423 may pass through the fastening hole 422 and have ends coupled to the profile unit 210. At this time, one of the plurality of fastening holes 422 may contact any one profile 210 and the other may contact another profile unit 210 adjacent to the profile unit 210.

As such, the coupler 400 and the profile unit 210 are in contact with each other through the inclined surface, so that the coupler 400 and the profile unit 210 may be in close contact with each other. In addition, as shown in FIG. 4, a gasket 430 is disposed between the inclined surfaces 411 on both sides of the coupler 400 and the profile unit 210, thereby forming a gap between the coupler 400 and the profile unit 210. It can be tightly prevented.

In the rail-type expansion joint device 1 as described above, the plurality of profile units 210 are closely contacted by the inclined surface of the coupler 400 and are sealed by the gasket 430. , There is an advantage in that the connection structure of the profile unit 210 is solid and watertightness is increased.

Hereinafter, a method of repairing a rail-type expansion joint according to an embodiment of the present invention will be described with reference to FIGS. 8 to 11C.

8 is a flow chart showing the maintenance method of the rail-type expansion joint device according to an embodiment of the present invention, FIG. 9 is a flow chart showing detailed steps of steps S300 and S600 in FIG. 8, and FIGS. 10A to 10D are It is a plan view showing a state in which the rail-type expansion joint device is installed step by step as shown in FIG. 8, and FIGS. 11A to 11C are side views illustrating a state in which the rail-type expansion joint device is installed step by step as shown in FIG. 8. At this time, for convenience of explanation, reference numerals for the existing futa concrete (C) and the re-placed futa concrete (C2) are given differently, but may actually be made of the same component.

Referring to FIG. 11A, the rail-type expansion joint device may be spaced apart so that a gap between the profiles 200 facing at the time of initial installation corresponds to a gap between the fixtures 100. Thereafter, as shown in FIG. 11B, when the gap between the oils is narrowed, the gap between the facing profiles 200 is narrowed, and the facing surfaces of the profiles 200 may be in contact.

At this time, when the facing profile 200 contacts as described above, or when the interval between the profiles 200 is deformed by a predetermined value or more, repair construction is performed.

First, as shown in FIG. 10A, the extension joint of the bridge is divided into a first section (A) and a second section (B) based on the coupler 400 (S100). In this case, the first section (A) and the second section (B) may include different lanes. Then, the futa concrete (C) of the first section (A) is removed. Here, it is preferable to remove the futa concrete so that the profile unit 210a located in the first section A and the coupler 400 coupled to the profile unit 210a are exposed. At this time, the lane corresponding to the second section B is characterized in that the vehicle can pass.

In addition, by disassembling the coupler 400 from the profile units 210a and 210b, the profile unit 210a located in the first section A and the profile unit 210b located in the second section B are formed. Separate each other (S200).

Next, the profile unit 210a located in the first section A is slid in the orthogonal direction to adjust the position (S300).

In this case, referring to FIG. 9, the step S300 may include a step of removing a spacer (S310), a step of adjusting the position of the profile unit (S320), and a step of relocating the spacer (S330).

First, in the step S310, the spacer 212 disposed in the long hole of the profile unit 210a is removed.

In addition, in step S320, the profile unit 210a is slid in the direction of the bridge axis to adjust the position. In this case, referring to FIG. 11C, by sliding the profile units 210a in a direction spaced apart from each other, a gap in the intersecting direction between the profile units 210a may be secured.

Next, in step S330, the spacer 212 is rearranged in the long hole. In this case, as shown in FIG. 11B, the spacer 212 may be disposed at a position away from the oil gap in the inner space of the long hole.

Then, the futa concrete (C2) is re-placed in the first section (A) (S400). At this time, it is preferable not to re-pure the futa concrete (C2) in the vicinity of the coupler 400. In addition, after the futa concrete (C2) is re-placed in the first section (A), it is preferable that the vehicle can pass through the lane of the first section (A).

Next, the futa concrete (C) of the second section (B) is removed (S500).

Then, the position of the profile unit 210b located in the second section B is adjusted (S600). In this case, the step S600 may include a spacer removing step (S610), a profile unit position adjusting step (S620), and a spacer rearranging step (S630), as shown in FIG. 9. In this case, it is preferable that the position of the profile unit 210b of the second section (B) is adjusted to correspond to the position of the profile unit 210a of the first section (A). Here, steps S610 to S630 may be performed in the same manner as steps S310 to S330 described above.

Next, the coupler 400 is assembled to the profile unit 210 (S700). At this time, one side of the coupler 400 may be coupled to the profile unit 210a located in the first section (A), and the other side may be coupled to the profile unit 210b located in the second section (B). . At this time, in the steps S300 and S600, the profile unit 210a of the first section (A) and the profile unit (210b) of the second section (B) must be positioned at the same interval, and the coupler 400 ) It is easy to assemble.

Finally, the futa concrete (C2) is re-placed in the second section (B) (S800). At this time, it is preferable to pour futa concrete (C2) in the vicinity of the coupler 400.

The maintenance method of the rail-type expansion joint as described above allows the vehicle to pass through the second section (B) when the first section (A) is repaired, and when the second section (B) is repaired and constructed. In the first section (A) by allowing the vehicle to pass, and by completing the construction of all sections of the new joint, it is possible to minimize the vehicle slipping phenomenon due to the repair work of the bridge.

As described above, with reference to the accompanying drawings, a rail-type expansion and contraction joint device and a repair method thereof according to one preferred embodiment of the present invention have been described in detail.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the technical field to which the present invention belongs can make various modifications, changes, and substitutions within the scope not departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings. . The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

C, C2: futa concrete
100: fixture
200: a pair of profiles
210: profile unit
2101: horizontal material
2102: vertical material
210h: long hole
211: connecting member
212,213: spacer
300: elastic member
400: coupler
410: insertion support
411: slope
420: fastening part,
421: bending plate
422: fastening hole
423: fastening bolt
430: gasket

Claims (9)

A fixture fixedly installed on the expansion joint of the bridge in which the oil gap is formed;
A pair of profiles disposed to face each other on the upper side of the fixture and including a plurality of profile units spaced apart in a longitudinal direction;
An elastic member connecting between the pair of profiles; And
Rail-type expansion joint device comprising a plurality of couplers inserted and installed between the spaced apart from the profile units. The method of claim 1,
The coupler,
An insertion support portion inserted between the spaced apart profile units,
Rail-type expansion joint device comprising a fastening portion connected to the insertion support portion and fastened to the profile unit. The method of claim 2,
The insertion support portion has an inclined surface,
The inclined surface of the coupler is a rail-type expansion joint device, characterized in that in surface contact with the profile unit. The method of claim 1,
The pair of profiles,
Rail-type expansion joint device, characterized in that it is installed to be slidable in the direction of the bridge axis from the upper side of the fixture. The method of claim 4,
The profile unit has a plurality of long holes disposed in the orthogonal direction,
A rail-type expansion joint device further comprising a connection member connected to the fixture and passing through the long hole to slidably connect the profile unit to the fixture in a throttling direction. The method of claim 5,
Rail-type expansion joint device further comprising a spacer inserted into the inner space of the long hole and disposed on at least one side of the connecting member. The method of claim 5,
Part of the long hole is inserted into the inner space, the other part rail-type expansion joint device further comprising a spacer covering the upper surface of the profile unit adjacent to the long hole. In the maintenance method of the rail-type expansion joint according to any one of claims 1 to 7,
A first step of dividing both sides into a first section and a second section based on the coupler, and removing futa concrete from the first section;
A second step of disassembling the coupler located in the first section from the profile unit;
A third step of adjusting the position of the profile unit located in the first section;
A fourth step of re-placement of futa concrete in the first section;
A fifth step of removing futa concrete in the second section;
A sixth step of adjusting the position of the profile unit located in the second section;
A seventh step of assembling the coupler to the profile unit; And
A method for repairing a rail-type rail-type expansion joint comprising an eighth step of re-placement of futa concrete in the second section. The method of claim 8,
Step 3 and Step 6,
Removing spacers disposed in long holes of the profile unit;
Adjusting the position by sliding the profile unit in the throttle direction; And
A method of repairing a rail-type expansion joint comprising relocating the spacer in the long hole.

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