KR20210002153A - Expansion and contraction joint apparatus for bridge - Google Patents

Abstract

The present invention relates to an expansion joint for a bridge, which is installed between adjacent bridge slabs. The expansion joint comprises: a support unit combined along an upper side of an end part in a width direction of each of the bridge slabs, and including upper plates located opposite each other with a separation space laid therebetween, and a support plate combined with a lower part of the upper plates and combined with a side of an end part a bridge slab to support the upper plates; a drain sheet located in a lower part of the separation space to lead water falling from the separation space to be drained to the outside of an upper bridge structure, installed along an end part in a widthwise direction of the bridge slab, and having both end parts combined with the support plate; and a fixing unit combined with the drain sheet and the support plate to fix the drain sheet to the support plate. Accordingly, since an end part of the drain sheet is combined with the support plate on a side of the bridge slab, the expansion joint can prevent a deterioration in the durability in the drain sheet by preventing hot deformation or friction with a bridge structure.

Description

Expansion joint apparatus for bridge {Expansion and contraction joint apparatus for bridge}

The present invention relates to an expansion joint device for a bridge, and more particularly, to an expansion joint device for a bridge capable of preventing a decrease in durability of a drainage sheet from friction or hot deformation, and minimizing damage to the upper structure of the bridge. will be.

In general, bridges are divided into several spans in the longitudinal direction of the bridge between the bridge decks in order to cope with the expansion of the bridge due to temperature changes, and expansion joints are installed between the divided bridge decks for safe vehicle passage.

At this time, a drainage sheet is installed at the lower part of the expansion joint to prevent corrosion and deterioration of the bridge structure including the bridge support by blocking the passage of road surface water and various foreign substances under the bridge gap.

As an example of the technology for such a bridge expansion joint, Korean Patent No. 10-1538793 is applied to the lower side of the expansion joint installed on the bridge, and is formed in an uneven shape to provide elasticity to prevent rain and foreign matter from flowing into the pier. In the drainage sheet for an expansion joint having a fixing piece that is fitted between the upper plate of a bridge and a finger member on both sides of a drainage part, a metal fixing washer having the same height as that of the fixing piece is placed on the fixing piece at a position where the fixing bolt is coupled A drainage sheet for an expansion joint, characterized in that the upper and lower surfaces of the metal fixing washers are interviewed on a support body coupled to the finger member and the upper plate by inserting so that the fixing piece is firmly fixed without pressure has been disclosed.

On the other hand, the conventional drainage sheet for the expansion joint, the upper surface of the finger plate is embedded and fixedly coupled to the bridge upper plate by perforation.

However, such a conventional drainage sheet for an expansion joint has a problem in that durability is deteriorated, such as damage to the end or hot deformation while friction between the finger plate and the bridge upper slab occurs by a vehicle moving to the upper part of the bridge.

In addition, since the conventional drainage sheet for expansion joint is a structure that is fixed by anchor pins after drilling the bridge deck slab, it not only causes damage to the bridge deck structure, but also promotes such damage every time the drainage sheet is replaced. There was a problem of causing damage to the upper structure.

Korean Patent Registration No. 10-1538793

An object of the present invention is to provide an expansion joint device for a bridge capable of preventing damage or hot deformation of a drainage sheet, thereby preventing a decrease in durability of a drainage sheet, and minimizing damage to a bridge deck structure.

The present invention, in the expansion joint device for a bridge installed between neighboring bridge decks, the upper plate coupled along the upper surface of each end of the bridge in the width direction, and positioned to face each other with a spaced space therebetween, A support unit configured to include a support plate coupled to a lower portion of the upper plate and coupled to an end side surface of the bridge upper plate to support the upper plate; A drainage sheet located below the separation space to allow water falling from the separation space to be drained to the outside of the bridge upper structure, installed along the widthwise end of the bridge upper plate, and having both ends coupled to the support plate ; It is coupled to the support plate and the drainage sheet, it provides an expansion joint device for a bridge, characterized in that it comprises a fixing unit for fixing the drainage sheet to the support plate.

Here, the drainage sheet may be formed of an elastic material, and a vertical cross section may be bent in a'U' shape.

In addition, the drainage sheet may be installed to be inclined downward toward an end side in the width direction of the bridge top plate, and configured to drain the water toward the other side.

The fixing unit may include an anchor member that penetrates the drainage sheet and is fixed to the support plate.

The support unit may further include a protective cover coupled to the support plate so as to be positioned above the fixing unit to protect the exposed end of the drain sheet and the fixing unit from falling water.

In detail, the protective cover is bent in a'L' shape, and one end is coupled to the side surface of the support plate and extended in a horizontal direction, and one end is coupled to the other end of the upper cover. The end may be configured to include a downwardly bent side cover.

The expansion joint for the bridge is installed between the support units so as to be slidable along the spaced space, and the lower surface contacts the upper surface of the drainage sheet and scrapes the upper surface of the drainage sheet according to the sliding movement. It may be configured to further include a scraper device for removing the foreign matter and the water deposited on the drainage sheet.

Here, the scraper device is formed to be exposed to the upper portion of the support unit, the lower portion is inserted into the spaced space, the upper body configured to allow the operator to slide along the spaced space, and the lower portion of the upper body In combination, it is located below the support unit, is installed on the upper surface of the drain sheet so that the lower surface is in contact with the upper surface of the drain sheet, it may be configured to include a lower body to scrape the upper surface of the drain sheet when sliding.

Further, in the scraper device, the upper body portion may be detachably coupled to the lower body portion by a detachable unit.

The detachable unit may further include a detachable bolt having an upper end coupled to the upper body and a lower end detachably screwed into a screw groove formed on the upper surface of the lower body.

The lower body portion may be formed with a plurality of drainage slits to allow the water to pass through and drain when sliding.

On the other hand, the scraper device is formed to be exposed to the upper portion of the support unit, the lower portion is fitted into the spaced space, the upper body portion configured to allow the operator to slide along the spaced space, and the lower portion of the upper body portion A first lower body coupled to the lower part of the support unit and a second lower part connected to the lower part of the first lower body and having a lower surface in contact with the upper surface of the drain sheet to scrape the upper surface of the drain sheet when sliding A lower body including a body, and installed between the first lower body and the second lower body to connect the first lower body and the second lower body, and the first lower body faces the drainage sheet It may be configured to include an elastic unit so that the elastic force is exerted so that the first lower body is in close contact with the drainage sheet.

In this case, the elastic unit may be composed of an elastic spring.

Alternatively, the scraper device is formed to be exposed to the upper portion of the support unit, and the lower portion is fitted into the spaced space to allow the operator to slide along the spaced space, and an upper body portion, and a lower portion of the support unit And a rectangular guide hole into which the lower end of the upper body is inserted so that the coupling position with the upper body is moved, and the lower part is installed on the upper surface of the drainage sheet to scrape the upper surface of the drainage sheet by sliding movement. It may be configured to include a body.

Here, a fitting part inserted into the guide hole may be provided at a lower end of the upper body part, and the upper body part may be configured to be movable in the width direction of the drainage sheet along the guide hole.

The expansion joint device for a bridge according to the present invention provides the following effects.

First, by coupling the end of the drainage sheet to the support plate on the side of the bridge top plate, it is possible to prevent the reduction of durability of the drainage sheet by preventing friction or hot deformation with the bridge structure.

Second, unlike the conventional method in which the drainage sheet is punched into the bridge deck structure, and the drainage sheet is coupled to the support unit, damage to the bridge deck structure can be prevented even when the drainage sheet is repeatedly replaced.

Third, it is economical since it is possible to easily remove foreign matter accumulated on the upper surface of the drainage sheet using a scraper device without disassembling and assembling the support unit, thereby reducing the work time and manpower consumption.

Fourth, since foreign matter deposited on the drainage sheet can be quickly and easily removed through the scraper device, the drainage sheet sediment can be easily removed periodically without the burden of disassembling and assembling the upper plate and the support plate. And the durability of the upper structure of the bridge can be prevented.

1 is a perspective view showing an expansion joint for a bridge according to an embodiment of the present invention.
Figure 2 is a cross-sectional view showing the expansion joint for the bridge of Figure 1;
3 is a cross-sectional view showing another embodiment of a support unit coupled with a protective cover in the expansion joint for a bridge of FIG. 2.
4 is a cross-sectional view showing the configuration of a scraper device in the expansion joint device for a bridge of FIG. 1.
5 is a view showing the operation of the scraper device of FIG. 4.
6 is a perspective view of another embodiment of a scraper device in the expansion joint device for a bridge of FIG. 4.
7 is a perspective view showing another embodiment of a scraper device including an elastic unit in the scraper device of FIG. 6.
8 is a cross-sectional view showing a cross-section and operation of the scraper device of FIG. 7.
9 is a plan view of another embodiment of a scraper device configured to slide along a zigzag-shaped spaced space by the scraper device of FIG. 4.
10 is an exploded perspective view showing the configuration of the scraper device of FIG. 9.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, the expansion joint device for a bridge according to an embodiment of the present invention is installed between neighboring bridge decks 10 and configured to respond to the expansion and expansion of the bridge, and the bridge deck ( 10) It serves to protect the upper structure of the bridge from foreign matter or water flowing from the spaced space 20 between them. The expansion joint device for a bridge according to the present invention is configured to include a support unit 100, a drainage sheet 200, and a fixing unit 300.

First, the support unit 100 is coupled along the width direction end of each of the neighboring bridge decks 10, and is positioned to face each other with a spaced space 20 therebetween in consideration of the extension of the bridge deck 10 do.

In detail, the support unit 100 may include an upper plate 110 and a support plate 120.

The upper plate 110 is coupled along the width direction end of each bridge top plate 10, and the upper plates 110 adjacent to each other face each other with a spaced space 20 therebetween so as to correspond to the extension of the bridge. It is located.

The upper plate 110 is configured to form a space 20 by protruding from the end of the bridge upper plate 10 with the lower surface in contact with the upper surface of the widthwise end of the bridge upper plate 10 in a plate shape. .

Here, the separation space 20 is formed in a straight shape so that the scraper device 400 to be described later can reciprocate and slide in a straight line, but this is an embodiment, and the separation space 20 has various shapes such as a zigzag shape. Of course, it can be formed. On the other hand, in the case where the spaced space 20 has a zigzag shape, the scraper device 400 that slides along the spaced space 20 may be configured in consideration of the shape of the spaced space 20, and detailed description thereof Will be described later.

The support plate 120 is vertically erected by coupling the upper end to the lower bottom surface of the upper plate 110, and one side is coupled to be in contact with the end side of the bridge upper plate 10, thereby shaking the upper plate 110 It serves to prevent and support the back.

Meanwhile, the support unit 100 may be coupled to the bridge top plate 10 by a known anchor pin, and the anchor pin penetrates the upper plate 110 and is fixedly fixed to the top surface of the bridge top plate 10 or , If the purpose of fixing the support unit 100 can be achieved, such as which can be fixedly fixed to the side of the bridge top plate 10 through the support plate 120, various configurations may be applied.

The drainage sheet 200 is located below the separation space 20 and is installed along the widthwise end of the bridge top plate 10, and the water falling from the separation space 20 passes through the drainage passage 401 It serves to block water from entering the upper structure of the bridge by draining it to the outside of the structure.

The drainage sheet 200 is fixedly coupled to the support plate 120 at both ends through the fixing unit 300, and has a vertical cross section of a'U' shape so that it can be folded and unfolded in response to the extension of the bridge top plate 10. Is formed by bending.

The drainage sheet 200 may be installed to be inclined downward toward an end side in the width direction of the bridge top plate 10, so that falling water may be more easily drained toward the other side.

For example, the drainage sheet 200 may be formed to be inclined downward from one side in the width direction of the bridge top plate 10 to the other side, or it is formed to be inclined downward from the central part of the bridge top plate 10 toward both sides in the width direction. Can be configured. The drainage sheet 200 may have various downward slopes in consideration of installation space and drainage performance.

The drainage sheet 200 is preferably formed of a waterproof and stretchable material, and various materials such as rubber may be used.

On the other hand, in the conventional drainage sheet 200, since both ends are inserted between the bridge upper plate structure and the upper plate 110 and fixedly coupled by an anchor pin, the upper plate 110 and the bridge Since friction with the upper slab occurs, end breakage and hot deformation occur, thereby deteriorating durability.

In addition, since the conventional drainage sheet 200 is fixed and fixed to the bridge deck slab, there is a problem of causing damage to the bridge deck structure due to inevitability to damage the bridge deck 10 during replacement.

However, since the drainage sheet 200 according to the present invention is coupled to the support plate 120, not the bridge deck structure, it is possible to prevent friction with the bridge deck slab or hot deformation due to this, and when replacing the bridge deck The damage to the structure can be minimized.

In addition, since the drain sheet 200 is coupled by the fixing unit 300 in a state where the end portion is seated on the outer surface of the support plate 120 as shown, when the fixing unit 300 is separated, the drain sheet Since 200 can be separated as it is, it can be easily replaced without disassembling the upper plate 110 and the support plate 120.

The fixing unit 300 is coupled to the drain sheet 200 and the support plate 120 and serves to fix the drain sheet 200 to the support plate 120.

Here, the fixing unit 300 may be applied to the anchor member 310 fixed to the support plate 120 through the drainage sheet 200, a plurality of installation along the longitudinal direction of the support plate 120 Can be.

Meanwhile, the fixing unit 300 may be configured to fix the drainage sheet 200 as shown, as well as the support plate 120 to be fixed to the bridge top plate 10 so that the position thereof can be fixed.

In other words, the expansion joint device for the bridge achieves the above objectives through the fixing unit 300 without separately configuring a configuration for fixing the support plate 120 and a configuration for fixing the drainage sheet 200 respectively. can do.

To this end, the fixing unit 300 is configured to pass through the drainage sheet 200 and the support plate 120 so that the insertion end is fixed to the bridge top plate 10 slab, as shown, and supports the drainage sheet 200 The plate 120 can be fixedly coupled to the bridge top plate 10 at the same time.

3 is a view showing another embodiment of the support unit 100.

Referring to the drawings, the support unit 100 includes a protective cover 320 coupled to the support plate 120 so as to be positioned above the fixing unit 300, and is fixed with the exposed end of the drain sheet 200 It may be configured to prevent corrosion by protecting the tip of the unit 300 from falling water.

In detail, the protective cover 320 may be bent in a'L' shape to include an upper cover 321 and a side cover 322.

The upper cover 321 serves to protect the upper portion of the fixing unit 300 and the drain sheet 200 from falling water by being spaced apart from the top of the ends of the fixing unit 300 and the drain sheet 200 .

The upper cover 321 is formed with one end coupled to the side surface of the support plate 120 and extending in a horizontal direction. At this time, the upper cover 321 is horizontally extended to protect the upper side of the drainage sheet 200 and the fixing unit 300 from falling water, and the disassembly of the fixing unit 300 in the spaced space 20 is It is preferable that the horizontal length is set to be located inside the end of the upper plate 110 for ease.

The side cover 322 has one end coupled to the other end of the upper cover 321 and the other end is bent downward to prevent falling water from flowing into the side of the drainage sheet 200 and the fixing unit 300 Plays a role.

Here, the side cover 322, as well as to protect the sides of the drainage sheet 200 and the fixing unit 300 from falling water, and to set the length to facilitate the disassembly of the fixing unit 300 It is preferable that the length of the fixing unit 300 is formed downward to the upper side of the fixing unit 300 so that the fixing unit 300 is exposed to the outside as shown.

On the other hand, in the expansion joint for a bridge, foreign substances are deposited on the upper surface of the drainage sheet 200 when several days pass. However, the foreign matter deposited on the drainage sheet 200 in this way blocks the drainage of water, so that the water cannot be drained to the outside of the bridge and overflows to the bridge substructures, including abutments and piers, which corrodes the substructure of the bridge for durability. It causes a deterioration, and further causes damage of the drainage sheet 200 due to the load of the accumulated foreign matter.

For this reason, such an expansion joint for a bridge requires a series of maintenance work for the drainage sheet 200 to periodically remove foreign substances deposited on the drainage sheet 200.

Thus, in the prior art, after dismantling the entire finger portion installed in the entire section in the width direction of the bridge, the foreign matter accumulated on the drain sheet 200 is removed, and after the work is completed, the drain sheet 200 is reassembled through the finger portion. The foreign matter deposited in the was removed.

However, in such a conventional case, in order to remove the foreign matter deposited on the drainage sheet 200, there is a problem in that the operation is difficult as it is necessary to assemble the entire finger part after disassembling, and it takes a lot of work time and manpower. Since it takes a lot of work time and manpower, there is a burdensome problem in periodically removing the sediment from the drainage sheet 200.

Accordingly, the expansion joint device for a bridge according to the present invention, including the scraper device 400, allows the operator to easily remove foreign substances deposited on the drainage sheet 200 without disassembling and assembling the support unit 100 as in the prior art. By making it possible to remove, it is possible to provide an economical effect by reducing the work time and required manpower accordingly.

Hereinafter, the above-described scraper device 400 will be described.

4, the scraper device 400 is installed between the support units 100 so as to be movable along the width direction of the sliding drainage sheet 200 along the spaced space 20, and the bottom surface is drained. It is configured to contact the upper surface of the sheet 200 and scrape the upper surface of the drain sheet 200 according to the sliding movement to remove foreign matter and water deposited on the drain sheet 200.

In detail, the scraper device 400 may include an upper body portion 420 and a lower body portion 410.

First, the upper body part 420 is formed so as to be exposed to the upper part of the support unit 100 so that the operator can manipulate it, and the lower part is inserted into the spaced space 20 so that the operator can follow the spaced space 20. It is configured to be able to slide.

The lower body portion 410 is coupled to the lower portion of the upper body portion 420 and located under the support unit 100, and the lower body portion 410 is placed on the upper portion of the drain sheet 200 so that the lower surface contacts the upper surface of the drain sheet 200 It is installed, and is configured to scrape the upper surface of the drainage sheet 200 during sliding movement.

Here, the lower body part 410 may be formed with a plurality of drainage slits 414 so that water can pass through and drain when sliding.

The drainage slit 414 is formed through the lower body portion 410 in the sliding movement direction, and is formed to the lower surface, so that effective drainage can be achieved during the sliding movement. Here, the drainage slit 414 may variously set the drainage width and number in consideration of the size of the lower body part 410, foreign matter, and drainage performance.

Meanwhile, various embodiments may be applied to the scraper device 400, and a detailed description thereof will be described later.

FIG. 5 is a view showing an operation of the scraper device 400 and a process of removing foreign matter deposited on the drain sheet 200 accordingly, and the operation of the scraper device 400 will be described with reference to the drawings.

First, as shown in (a), when it is determined that foreign matter (1) is deposited on the upper surface of the drainage sheet 200 and needs to be removed, the operator slides the scraper device 400 from one side to the other as shown in (b). By moving, the foreign matter 1 of the drainage sheet 200 is scraped and removed according to the sliding movement.

That is, the scraper device 400, when the upper body portion 420 and the lower body portion 410 are slid and moved by the operator's operation, the lower body portion 410 is scraped the upper surface of the drain sheet 200 As a result, foreign matter deposited on the drainage sheet 200 is removed.

Hereinafter, various embodiments of the scraper device will be described.

First, referring to Figure 6, the scraper device (400a), the upper body portion (420a) is detachably coupled to the lower body portion (410a), the upper body portion (420a) only during the scraping operation It is configured to be bonded to the part 410a to be scraped.

This is because, as the upper body portion 420a is protrudingly coupled to the upper portion of the upper plate 110, vehicle traffic and safety problems may occur.

In other words, the scraper device 400a separates the upper body part 420a from the lower body part 410a when the scraper device 400a does not scrape foreign substances so that the upper surface of the upper plate 110 is flat, and when scraping is required The upper body portion (420a) is configured to be combined with the lower body portion (410a) to remove foreign substances.

To this end, in the scraper device 400a, the upper body part 420a and the lower body part 410a are separated, and the upper body part 420a is detachable from the lower body part 410a by the detachable unit 430 Can be configured to

The detachable unit 430 is a detachable bolt that has an upper end coupled to the upper body 420a and a lower end screwed detachably into a detachable groove 415 formed on the upper surface of the lower body 410a, as shown (431) can be applied. However, this is an exemplary embodiment, as long as the upper body portion 420a and the lower body portion 410a are configured to be detachably coupled to each other, various configurations such as a snap configuration may be applied.

Meanwhile, since the scraper device 400b is configured to scrape in contact with the drainage sheet 200, the scraping effect may be improved as the scraper device 400b comes into close contact with the drainage sheet 200. Accordingly, in the case of the scraper devices 400 and 400a of FIGS. 4 and 6, the operator applies the scraper device 400b to the drain sheet 200 so that the lower body portion 410b is more closely contacted to the drain sheet 200 in order to improve the scraping effect. ), and while maintaining the pressed state, the scraper device 400b can be slid and moved to perform the scraping operation.

However, in the above-described case, since the operator must maintain the pressurized state during the scraping operation, it is more difficult to work, and when the pressing force is excessively applied, the drainage sheet 200 may be rather damaged.

Accordingly, in consideration of the above points, the scraper device 400b allows the lower body portion 410b to be in close contact with the upper surface of the drainage sheet 200 without pressure by the operator, so that foreign matter deposited on the drainage sheet 200 is more prevented. It is configured to be effectively scraped, and the pressing force of the lower body portion 410b toward the drainage sheet 200 may be configured to prevent damage to the drainage sheet 200 and to be uniform.

On the other hand, referring to FIGS. 7 and 8, the scraper device 400b may be configured such that the lower body portion 410b and the drain sheet 200 are in close contact with each other by using the elastic force of the elastic unit 413.

In detail, the scraper device 400b may include an upper body part 420b, a lower body part 410b, and an elastic unit 413.

The upper body is formed so as to be exposed to the upper portion of the support unit 100, and the lower portion is inserted into the spaced space 20 to allow the operator to slide along the spaced space 20.

The lower body portion 410b is coupled to a lower portion of the upper body portion 420b, and is configured to scrape the drainage sheet 200 by being positioned under the support unit 100.

Here, the lower body portion 410b is coupled to the upper body portion 420b so as to be detachable, as shown in FIG. 6. However, the lower body portion 410b may be integrally coupled with the upper body portion 420b as shown in FIG. 4, and for convenience, the detachable configuration of FIG. 6 is illustrated as an example.

On the other hand, the lower body portion 410b, including the first lower body 411 and the second lower body 412, is configured to be separated into two configurations.

Here, the first lower body 411 is coupled to the lower portion of the upper body portion 420b and is positioned under the support unit 100.

In addition, the second lower body 412 is connected to the lower portion of the first lower body 411 and the lower surface is in contact with the upper surface of the drainage sheet 200 and is configured to scrape the upper surface of the drainage sheet 200 when sliding. .

Here, it is preferable that the first lower body 411 is configured such that an accommodation space with an open bottom surface is formed so that the upper portion of the second lower body 412 is slidably inserted. This is because water or foreign matter may be introduced into the gap between the first lower body 411 and the second lower body 412 to prevent damage and operation of the elastic unit 413.

Meanwhile, in the drawing, the scraper device 400b has a configuration in which the second lower body 412 is inserted by forming an accommodation space on the bottom of the first lower body 411, but as described above, the first lower body Various embodiments are possible as long as it is a configuration capable of achieving the purpose of preventing foreign matter from flowing into the gap between the body 411 and the second lower body 412.

The elastic unit 413 is installed between the first lower body 411 and the second lower body 412 to connect the first lower body 411 and the second lower body 412, and the first lower body The first lower body 411 is in close contact with the drainage sheet 200 so that the elastic force 411 is exerted toward the drainage sheet 200.

The elastic unit 413 may be constructed of an elastic spring, and may be erected and installed to exert an elastic force in the direction of the drainage sheet. The elastic unit 413 may have various configurations such as a plate spring, as long as it can exert an elastic force other than the elastic spring described above.

The elastic unit 413 may be configured by varying the number or modulus of elasticity of elastic springs in consideration of adhesion to the drainage sheet 200.

On the other hand, the lower body portion (410b), in order to combine with the elastic spring, the elastic spring can be formed to protrude the fitting protrusion on the lower surface of the first lower body (411) and the upper surface of the second lower body (412). However, this is possible in various embodiments if the elastic unit 413 can be coupled to one embodiment.

9 and 10 are views showing still another embodiment of the scraper device 400c.

First of all, prior to looking at this, the spacing space 20a is formed in a straight shape, and the scraper device 400c is configured to slide in a linear direction.

However, by design or the like when installing a bridge, the spaced space 20a may be variously formed in a zigzag shape, such as a sawtooth shape or a wave shape instead of a straight shape.

In this case, the scraper device 400c not only moves in the left-right direction from right to left along the separation space 20a, but also moves according to the shape of the zigzag-shaped separation space 20a.

In other words, when the spaced space 20a is formed in a zigzag shape, the scraper device 400c reciprocates along the uppermost and lowermost parts of the spaced space 30.

Accordingly, the scraper device 400c according to the present invention, as shown in FIG. 9, is configured by separating the upper body portion 420c and the lower body portion 410c from each other, and the upper body portion 420c is zigzag-shaped. It may be configured to slide along the separation space (20a).

Hereinafter, the scraper device 400c will be described in detail. The scraper device 400c includes an upper body portion 420c and a lower body portion 410c.

First, the upper body portion (420c) is formed to be exposed to the upper portion of the support unit (100), the lower portion is fitted into the separation space (20a) is configured to allow the operator to slide along the separation space (20a).

In addition, the lower body part 410c is similarly located under the support unit 100 and connected to the lower part of the upper body part 420c. At this time, the lower body portion 410c is installed on the upper surface of the drainage sheet 200 so that the lower surface thereof contacts the upper surface of the drainage sheet 200 and is configured to scrape the upper surface of the drainage sheet 200 by sliding movement. Here, the configuration of the upper body portion 420c and the lower body portion 410c corresponds to the configuration of the upper body portion 420c and the lower body portion 410c separated from each other in FIG. 6 described above.

However, the scraper device 400c in the above-described embodiment is configured to be movable with respect to the lower body portion 410c so that the upper body portion 420c can move along the zigzag-shaped spaced space 20a.

Referring to FIG. 10, first, the upper body part 420c is formed to be exposed to the upper part of the support unit 100, and the lower part is inserted into the spaced space 20a to allow the operator to slide along the spaced space 20a. It is structured to be able to.

In addition, the lower body portion 410c is located under the support unit, is installed on the upper surface of the drain sheet, and is configured to scrape the upper surface of the drain sheet by sliding movement.

Here, the lower body portion 410c has a rectangular guide hole 416 in which the lower end portion of the upper body portion is inserted so that the coupling position with the upper body portion is moved. Here, the length of the guide hole 416 may be set in consideration of the moving distance of the upper body portion 420c in correspondence with the zigzag shape of the spaced space 20a.

Meanwhile, the upper body portion 420c may be detachably coupled to the guide hole 416 of the lower body portion 410c through a detachable unit 430a. In the drawing, a fitting part 432 inserted into the guide hole 416 is provided at the lower end of the upper body with the detachable unit 430a, and the upper body moves along the guide hole 416 in the width direction of the drainage sheet. It can be configured as possible.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those of ordinary skill in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical scope of the present invention should be determined by the technical spirit of the appended claims.

10: bridge top 100: support unit
110: upper plate 120: support plate
200: drainage sheet 300: fixing unit
310: anchor member 320: protective cover
321: upper cover 322: side cover
400,400a,400b,400c: scraper device
410,410a,410b,410c: lower body part
411: first lower body
412: second lower body 413: elastic unit
414: drain slit 415: detachable groove
416: guide hole 420,420a,420b,420c: upper body
430,430a: detachable unit 431: detachable bolt
432: fitting part

Claims (11)

In the expansion joint for bridges installed between neighboring bridge decks,
The upper plate is coupled along the upper surface of each end of the bridge in the width direction and positioned opposite to each other with a spaced therebetween, and the upper plate is coupled to the lower part of the upper plate and coupled to the end side of the bridge upper plate. A support unit comprising a support plate for supporting;
A drainage sheet located at the bottom of the spaced space to allow water falling from the spaced space to be drained to the outside of the bridge upper structure, installed along the widthwise end of the bridge upper plate, and having both ends coupled to the support plate ;
It is coupled to the support plate and the drainage sheet, characterized in that it comprises a fixing unit for fixing the drainage sheet to the support plate expansion joint device for a bridge.
The method of claim 1,
The drainage sheet,
An expansion joint device for bridges, characterized in that it is formed of an elastic material, and the vertical section is bent in a'U' shape.
The method of claim 1,
The drainage sheet,
Extension joint device for a bridge, characterized in that it is installed inclined downward toward the end side in the width direction of the bridge upper plate, and configured to drain the water toward the other side.
The method of claim 1,
The fixing unit,
An extension joint device for a bridge, characterized in that it comprises an anchor member fixed to the support plate through the drainage sheet.
The method of claim 4,
The support unit,
An expansion joint device for a bridge, characterized in that it further comprises a protective cover coupled to the support plate so as to be located above the fixing unit to protect the exposed end of the drain sheet and the fixing unit from falling water.
The method of claim 5,
The protective cover,
It is bent in a'a' shape, one end is coupled to the side surface of the support plate and the upper cover extending in a horizontal direction,
One end is coupled to the other end of the upper cover, and the other end is an expansion joint device for a bridge, characterized in that it comprises a side cover bent downward.
The method of claim 1,
It is installed between the support units so as to be slidable along the spaced space, and the lower surface contacts the upper surface of the drain sheet and scrapes the upper surface of the drain sheet according to the sliding movement, and the foreign matter deposited on the drain sheet and the Extension joint device for bridges, characterized in that it is configured to further include a scraper device to remove water.
The method of claim 7,
The scraper device,
An upper body portion formed to be exposed to the upper portion of the support unit and configured to allow a worker to slide along the spaced space by inserting a lower portion into the spaced space,
It is coupled to the lower part of the upper body part and located under the support unit, and is installed on the upper part of the drain sheet so that the lower surface contacts the upper surface of the drain sheet, and includes a lower body part that scrapes the upper surface of the drain sheet when sliding. Expansion joint device for bridges, characterized in that it is constructed by using.
The method of claim 8,
The scraper device,
An expansion joint for a bridge, characterized in that the upper body portion is detachably coupled to the lower body portion by a detachable unit.
The method of claim 9,
The detachable unit,
An extension joint device for bridges, characterized in that the upper end portion is coupled to the upper body portion, and the lower portion further comprises a detachable bolt that is screwed detachably into a screw groove formed on the upper surface of the lower body portion.
The method according to any one of claims 8 to 10,
The lower body part,
An expansion joint device for a bridge, characterized in that a plurality of drainage slits are formed to allow the water to pass through and drain when sliding.

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