KR102401516B1 - Expansion jointing apparatus for a bridge - Google Patents

Abstract

An expansion joint apparatus for a bridge is disclosed. The expansion joint apparatus for the bridge comprises: a pair of finger plates formed to extend in the traverse direction of the bridge and provided with surfaces facing each other to be engaged therewith; a pair of support bodies formed to extend in the traverse direction and support, from the lower side, the pair of finger plates respectively; and an inner placement member provided in an inner space formed between the pair of support bodies; and a plurality of anchors which are provided to be spaced at intervals from each other in the traverse direction with respect to each of the pair of support bodies, and in which a tip end of each body is fixated at each of the pair of support bodies, and each head portion is disposed in the direction of being away from each of the pair of the support bodies to be buried on the upper plate of the bridge, wherein an insertion groove, into which at least one portion of traverse reinforcing steel of the upper plate of the bridge can be inserted, is formed to be dented on the circumferential surface of the body of the anchor. The present invention can prevent interference between the anchor and the traverse reinforcing steel.

Description

Expansion joint device for bridges {EXPANSION JOINTING APPARATUS FOR A BRIDGE}

The present application relates to an expansion joint device for a bridge.

In general, in order to smoothly accommodate new construction caused by temperature changes such as winter and summer, drying shrinkage and creep according to the age of concrete, and movement of the upper tank according to live load, a number of bridge decks are continuously installed at a predetermined interval. do.

Accordingly, an expansion joint device including a finger plate is widely used in order to connect a joint between the upper plate and the upper plate of a bridge having a frequently changed interval to allow the vehicle to pass smoothly.

These finger plates are coupled with the bridge top plate by embedding the stud anchors in the bridge top plate. Conventionally, it was necessary to fix the position of the reinforcing bars of the bridge top plate, and it was necessary to prevent the interference between the reinforcing bars and the stud anchors from occurring.

An object of the present application is to provide an expansion joint device for a bridge capable of fixing the position of the reinforcing bars of the bridge top plate and preventing the interference between the reinforcing bars and the stud anchors in order to solve the problems of the prior art.

However, the technical problems to be achieved by the embodiment of the present application are not limited to the technical problems as described above, and other technical problems may exist.

As a technical means for achieving the above technical problem, the expansion joint device for a bridge according to the first aspect of the present application includes a pair of finger plates extending along the transverse direction of the bridge and having surfaces facing each other engaged with each other; a pair of supporters extending along the lateral direction and supporting each of the pair of finger plates from a lower side; an inner arrangement member provided in an inner space formed between the pair of supports; and a plurality of each of the pair of supports are provided at a distance from each other along the lateral direction, the ends of each body are fixed to each of the pair of supports, and each head is separated from each of the pair of supports It includes an anchor disposed to face the direction and embedded in the bridge top plate, and on the circumferential surface of the body of the anchor, an insertion groove into which at least a portion of the transverse reinforcement of the bridge top plate can be inserted may be recessed.

The above-described problem solving means are merely exemplary, and should not be construed as limiting the present application. In addition to the exemplary embodiments described above, additional embodiments may exist in the drawings and detailed description.

According to the above-described problem solving means of the present application, since an insertion groove is formed on the circumferential surface of the body of the anchor in which at least a part of the transverse reinforcement of the bridge top plate can be inserted, the position is fixed by inserting the transverse reinforcement into the insertion groove of the anchor. and interference between the anchor and the transverse reinforcement can be prevented.

1 is a schematic perspective view of an expansion joint device for a bridge according to an embodiment of the present application.
2 is a schematic front view showing the expansion joint device for a bridge according to an embodiment of the present application as viewed from one side in the transverse direction.
3 is a schematic front view showing the expansion joint device for a bridge according to an embodiment of the present application provided with a liquid movement guide member, a linear member, and the like, viewed from one side in the transverse direction.

Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art to which the present application pertains can easily carry out. However, the present application may be implemented in several different forms and is not limited to the embodiments described herein. And in order to clearly explain the present application in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout this specification, when a part is "connected" with another part, this includes not only the case where it is "directly connected" but also the case where it is "electrically connected" with another element interposed therebetween. do.

Throughout this specification, when a member is positioned “on”, “on”, “on”, “on”, “under”, “under”, or “under” another member, this means that a member is positioned on the other member. It includes not only the case where they are in contact, but also the case where another member exists between two members.

Throughout this specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

In addition, terms (upper, upper, upper, lower, transverse direction, longitudinal direction, etc.) related to the direction or position in the description of the embodiment of the present application are set based on the arrangement state of each component shown in the drawings. For example, when looking at FIGS. 1 to 3 , the overall 12 o'clock direction is the upper side, the overall 12 o'clock direction is the upper side, the overall 12 o'clock direction is the upper surface, and the overall 6 o'clock direction is the lower side and the like, and referring to FIG. 1 , the overall 10 o'clock-4 o'clock direction may be the horizontal direction, and the generally 2 o'clock-8 o'clock direction may be the vertical direction, and as another example, FIGS. 2 and 3 . Referring to , in general, the 9 o'clock-3 o'clock direction may be the longitudinal direction.

The present application relates to an expansion joint device for a bridge.

Hereinafter, an expansion joint device for a bridge (hereinafter referred to as 'this device') according to an embodiment of the present application will be described.

1 and 2 , the device includes a pair of finger plates 1 . A pair of finger plates 1 are formed to extend along the transverse direction of the bridge, and surfaces facing each other are provided to be engaged.

Also, referring to FIGS. 1 and 2 , the apparatus includes a pair of supports 2 . Each of the pair of supports 2 is formed to extend in the transverse direction, and supports each of the pair of finger plates 1 from the lower side.

Referring also to FIGS. 1 and 2 , the device includes an inner disposition member 3 . The inner arrangement member (3) is provided in the inner space formed between the pair of supports (1).

Also, referring to FIGS. 1 and 2 , the device includes an anchor (stud anchor) 4 . Anchors 4 are provided in plurality for each of the pair of supports 2 . A plurality of anchors (4) are provided with mutual spacing along the transverse direction for each of the pair of supports (2). In addition, each of the plurality of anchors 4 has an end fixed to each of a pair of supports 2 , and is disposed so that each head faces away from each of the pair of supports 2 to be embedded in the bridge top plate do.

Specifically, referring to FIGS. 1 and 2 , the anchor 4 may include a body 41 and a head 42 . The head 42 may have a circular cross-section. At this time, the anchors 4 provided on the support 2 positioned on one side of the pair of supports 2 are provided at intervals in the lateral direction, each head 42 facing one side and the body 41 of The end (the other end) may be fixed to the support 2 located on one side, and the anchors 4 provided on the support 2 located on the other side are provided at intervals in the transverse direction, each head 42 It faces the other side and the end (one end) of the body 41 may be fixed to the support body 2 located on the other side.

모양의 홈일 수 있다. 또한, 삽입홈(411)은 앵커(4)의 길이 방향으로 간격을 두고 복수 개가 형성될 수 있다. 또한, 횡 방향으로 이웃하는 앵커(4)들은 서로 대응되는 위치에 삽입홈(411)이 형성될 수 있다. 이것은, 앵커(4)에 앵커(4)의 길이 방향으로 간격을 두고 형성되는 복수의 삽입홈(411) 각각이 앵커(4)와 횡 방향으로 이웃하는 이웃 앵커(4)의 복수의 삽입홈(411) 각각과 횡 방향으로 이웃하는 것을 의미할 수 있다. 이에 따라, 앵커(4)의 복수의 삽입홈(411) 중 하나에 삽입되는 횡 방향 철근(9)은 횡 방향(길이 방향)으로 다른 부분들이 앵커(4)와 횡 방향으로 간격을 두고 배치되는 다른 앵커(4) 들의 삽입홈(411) 중 상기 하나의 삽입홈(411)과 대응되는 위치의 삽입홈(411) 들에 삽입될 수 있다. 이에 따라, 횡 방향 철근(9)은 횡 방향으로 복수의 지점(부분) 각각의 적어도 일부가 횡 방향으로 간격을 두고 배치되는 복수의 앵커(4) 각각의 복수의 삽입홈(411) 중 하나의 삽입홈(411) 각각에 삽입될 수 있다. 이때, 하나의 횡 방향 철근(9)의 복수의 지점 각각이 삽입되는 삽입홈(411) 들이 횡 방향으로 서로 대응되는 위치에 형성되므로 횡 방향 철근(9)은 구부러지지 않게 배치될 수 있다.In addition, the anchor 4 is formed with an insertion groove 411 in the circumferential surface of the bridge upper plate at least a portion of the transverse reinforcement 9 can be inserted. For example, the insertion groove 411 may have a U-shape, referring to FIG. 2 . Alternatively, the insertion groove 411 is

It may be a shaped groove. In addition, a plurality of insertion grooves 411 may be formed at intervals in the longitudinal direction of the anchor 4 . In addition, the anchors 4 adjacent to each other in the transverse direction may have insertion grooves 411 formed at positions corresponding to each other. This is, each of a plurality of insertion grooves 411 formed at intervals in the longitudinal direction of the anchor 4 in the anchor 4 is a plurality of insertion grooves ( 411) may mean adjacent to each other in the lateral direction. Accordingly, the transverse reinforcing bar 9 inserted into one of the plurality of insertion grooves 411 of the anchor 4 has other portions in the transverse direction (longitudinal direction) and the anchor 4 and the transverse direction are spaced apart. Among the insertion grooves 411 of the other anchors 4 , it may be inserted into the insertion grooves 411 at positions corresponding to the one insertion groove 411 . Accordingly, the transverse reinforcing bar 9 is one of the plurality of insertion grooves 411 of each of the plurality of anchors 4 in which at least a portion of each of the plurality of points (parts) in the transverse direction is disposed at intervals in the transverse direction. It may be inserted into each of the insertion grooves 411. At this time, since the insertion grooves 411 into which each of a plurality of points of one transverse reinforcing bar 9 are inserted are formed at positions corresponding to each other in the transverse direction, the transverse reinforcing bar 9 may be disposed not to be bent.

As described above, one or more transverse reinforcing bars 9 crossing a plurality of anchors 4 adjacent to each other in the transverse direction can be inserted into one or more insertion grooves 411 formed in each of the plurality of anchors 4 . , the position of the transverse reinforcing bars 9 may be fixed, and when the plurality of transverse reinforcing bars 9 are inserted into one or more insertion grooves 411 formed in each of the plurality of anchors 4, a plurality of transverse direction The position of each of the reinforcing bars 9 is fixed so that a certain interval between the transverse reinforcing bars 9 can be maintained.

In addition, the cross section of the body 41 of the anchor 4 may be rectangular. Accordingly, the insertion groove 411 for the anchor 4 can be easily formed, and the contact area between the inner surface of the insertion groove 411 and the transverse reinforcing bar 9 is higher than when the cross section of the body 41 is circular. It can be stretched to improve the fixation force.

Also, referring to FIG. 2 , the inner arrangement member 3 may include a waterproof member 31 . The waterproof member 31 includes a first side portion 311 provided on one inner surface of the pair of supports 2 and a second side portion 312 provided on the other inner surface of the pair of supports 2 . and an upper surface portion 313 connecting the upper end of the first side portion 311 and the upper end of the second side portion 312 on the lower side of the pair of finger plates 1 .

The waterproof member 31 may be made of a material including rubber. Accordingly, the waterproof member 31 may be made of a stretchable and flexible material. In addition, the waterproof member 31 may have a waterproof function. Accordingly, it is possible to prevent rainwater from flowing between the pair of supports 2 . In addition, the upper surface portion 313 may be bent in a v-shape in the middle of the longitudinal direction. Accordingly, according to the movement of the bridge upper plate, the pair of supports 2 can move in the longitudinal direction, and the upper surface part 313 is the movement of the pair of supports 2 in the longitudinal direction (a pair of supports ( 2) It can be expanded and contracted while accommodating the change in the gap between them.

In addition, referring to FIG. 2 , the inner arrangement member 3 may include a fixing member 32 for fixing each of the first side part 311 and the second side part 312 to each of the pair of supports 2 . have.

The fixing member 32 is provided for each of the pair of supports 2 , and may be provided in plurality at intervals along the lateral direction for each of the pair of supports 2 . In addition, the fixing member 32 includes a fixing plate 321 and a fixing plate 321 disposed on the inner side (on the inner surface) of each of the first side part 311 and the second side part 312, a pair of supporters ( 2) it may include a fixing part 322 fixed to each. The fixing part 322 may include a bolt member. In addition, the fixing part 322 may include a nut member. For example, one end of the bolt member may be screwed to the anchor 4 , passed through the plate 321 , and screwed to the support 2 . Since such a coupling method is obvious to those skilled in the art, a detailed description thereof will be omitted.

In addition, the fixing part 322 may serve to fix the anchor 4 to the pair of supports 2 . In this case, for example, one end of the bolt member is screwed with the anchor 4 , the plate 321 passes through the support 2 , and is arranged to extend, and the other end is a nut positioned inside the fixing plate 321 . It may be screwed to the member. Since such a coupling method is obvious to those skilled in the art, a detailed description thereof will be omitted.

Also, referring to FIG. 3 , the apparatus may include a liquid movement guide member 6 disposed on the upper surface portion 313 . The liquid movement guide member 6 may extend along the transverse direction. Also, the liquid movement guide member 6 may be positioned on the lowest surface of the upper surface portion 313 . For example, the liquid movement guide member 6 may be positioned on a portion bent in a v shape of the longitudinal middle portion of the upper surface portion 313 .

Specifically, the liquid movement guide member 6 may be a tube in which a hollow portion extending in the transverse direction is formed. Further, the liquid movement guide member 6 may be made of polyester fabric. That is, the liquid movement guide member 6 may be one in which a polyester fabric (which may form the outer surface of the liquid movement guide member 6) is provided in the form of a tube having a hollow part. Considering that polyester does not absorb liquid, the liquid falling onto the liquid transfer guide member 6 passes through the outer surface of the liquid transfer guide member 6 (such as between yarns made of polyester of a polyester fabric). through) and may be introduced into the hollow portion of the liquid movement guide member 6 .

In addition, the hollow part may be formed so that the cross-sectional area of each of the transverse direction side part and the transverse direction other side part is smaller than the cross-sectional area of the transverse middle part so that capillary force to each of the transverse direction and the other side in the transverse direction acts on the liquid in the hollow part. .

In the liquid movement guide member 6, the transverse middle portion may be formed between the transverse side portion and the other transverse side portion, and the cross-sectional area of the transverse middle portion of the hollow portion is greater than the cross-sectional area of each of the transverse direction side portion and the transverse direction side portion. can Accordingly, capillary force may act on one side of the transverse direction and the other side in the transverse direction, respectively, on the liquid located in the hollow part. Accordingly, at least a portion of the liquid located in the hollow part is moved to one side in the transverse direction or the other side in the transverse direction. It can be discharged in both directions. In addition, since polyester has a low liquid absorption rate, at least a portion of the liquid in the hollow part can be evaporated and removed.

In addition, since the liquid movement guide member 6 is made of polyester fabric, the weight is not large, and thus the load applied to the upper surface portion may be small compared to a plastic tube or the like. In addition, at least a part of the liquid movement guide member 6 may be fixed to the upper surface portion 313 . For example, it can be fixed by an adhesive (waterproof adhesive, etc.) less affected by liquid, sewing, or the like. In addition, fixing may be performed by various conventional means. Since it is obvious to those of ordinary skill in the art, a detailed description thereof will be omitted. Further, since the liquid movement guide member 6 is made of polyester fabric, it is deformable. Accordingly, the liquid movement guide member 6 can be deformed in response to deformation such as retracting or unfolding of the upper surface portion 313 while being fixed to the upper surface portion 313, and when deformed, the cross section of the hollow portion also corresponds to Although it will be deformed, the hollow part can be maintained, so that the liquid movement guide effect can be maintained.

Also, referring to FIG. 3 , an adsorption part 3131 may be formed on a surface of the upper surface part 313 opposite to each of the pair of finger plates 1 . The adsorption unit 3131 is located on the lower side of the surface of the upper surface portion 313 opposite to each of the pair of finger plates 1 (the upper surface of the portion facing each of the pair of finger plates 1 of the upper surface portion 313). It may be formed in a shape that is recessed into the , and a plurality of such adsorption units 3131 may be formed at intervals along the lateral direction. Accordingly, a portion of the upper surface portion 313 facing each of the pair of finger plates 1 serves as a sucker (adsorption plate) and may have a strong fixing force with respect to the pair of finger plates 1 . The adsorption unit 3131 may be adsorbed by a difference between internal pressure and external pressure, which is obvious to those skilled in the art, and thus a detailed description thereof will be omitted.

Alternatively, a portion of the upper surface portion 313 facing each of the pair of finger plates 1 may be formed of a rubber magnet. In addition, the finger plate 1 may be made of a material that forms a magnetic force between the rubber magnet and the rubber magnet (eg, a material including a metal). Accordingly, a portion of the upper surface portion 313 facing each of the pair of finger plates 1 may have a strong fixing force with the finger plate 1 .

As such, the portion opposite to each of the pair of finger plates 1 of the upper surface portion 313 may have an improved bonding force with respect to the finger plate 1 due to the material made of the suction unit 3131 or the rubber magnet, Accordingly, the load burden by the liquid movement guide member 6 disposed on the upper surface portion 313 is compensated so that the upper surface portion 313 is not separated with respect to the pair of finger plates 1 and maintains a fixed state. can

Referring also to FIG. 3 , the device may comprise a plurality of linear members 7 . Each of the plurality of linear members 7 has one end coupled to one of the pair of supports 2 (the support 2 positioned on one side), and the other end of each of the other ends is the other one of the pair of supports 2 . (The support body 2 located on the other side) may be coupled. In addition, at least some of the plurality of linear members 7 may be provided adjacent to each other at intervals in the transverse direction. In addition, at least some of the plurality of linear members 7 may be provided adjacent to each other at intervals in the vertical direction.

In addition, one end of the linear member 7 is provided while passing through the fixing plate 321 and the first side portion 311 may be screwed to the support (2). In addition, the other end of the linear member 7 is provided while passing through the fixing plate 321 and the second side portion 312 may be screwed to the support (2). For reference, when screwing, if necessary, a bolt or the like may be used.

In addition, the linear member 7 is deformable in a first state that is low temperature based on a preset temperature, and is set to be restored to an initial shape in a second state that is a high temperature based on a preset temperature SMA (Shape Memory Alloy) linear may be absent. Accordingly, the linear member 7 cannot maintain its initial shape when an external force is applied in the first state, which is lower than the preset temperature, and can be deformed according to the applied external force, and in a second state that is higher than the preset temperature, the initial shape is again may have a shape memory effect that is intended to be restored to

Since the bridge deck expands and contracts according to the temperature, the distance between the bridge top plates, that is, the distance between the pair of supports 2, is reduced when the temperature is high, and can be increased when the temperature is low. Accordingly, according to the present device, since the linear member 7 is provided, the linear member 7 returns to its initial shape (initial length) when the temperature is high, and the gap between the bridge top plates (the gap between the pair of supports 2) This can be suppressed from being excessively narrowed, and since the linear member 7 is deformed according to an external force at low temperature, it can be appropriately deformed according to the distance between the bridge top plates (the gap between the pair of supports 2). . That is, the linear member 7 can suppress excessive narrowing of the gap between the bridge top plates at high temperature (the gap between the pair of supports 2 ).

Accordingly, the preset temperature may be set in consideration of the temperature range in which the bridge upper plate is stretched. Preferably, it may be set to the lowest temperature within the temperature range at which the bridge deck is stretched.

Also, referring to FIG. 1 , for reference, in the present device, rivets may be used to join some components (eg, coupled to the support 2 of FIG. 1 and positioned on the outer surface of the support 2 ) The construction may be rivets).

The above description of the present application is for illustration, and those of ordinary skill in the art to which the present application pertains will understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present application. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope of the present application is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present application.

1: finger plate
2: support
3: inner placement member
31: waterproof member
311: first side
312: second side
313: upper surface
3131: adsorption unit
4: Anchor
41: body
411: insertion groove
42: tofu
6: Liquid movement guide member
7: Linear member

Claims (5)

In the expansion joint device for a bridge installed at the joint between the upper plate and the upper plate of the bridge,
a pair of finger plates extending along the lateral direction of the bridge and having surfaces facing each other engaged;
a pair of supporters extending along the lateral direction and supporting each of the pair of finger plates from a lower side;
an inner arrangement member provided in an inner space formed between the pair of supports;
A plurality of each of the pair of supports is provided at a distance from each other along the lateral direction, the ends of each body are fixed to each of the pair of supports, and each head is in a direction away from each of the pair of supports An anchor that is disposed to face and is embedded in the bridge top plate; and
A plurality of linear members each having one end coupled to one of the pair of supports, each other end coupled to the other one of the pair of supports, and spaced apart from each other in the lateral direction,
In the circumferential surface of the body of the anchor, an insertion groove into which at least a portion of the transverse reinforcing bar of the bridge upper plate can be inserted is recessed,
The cross section of the body of the anchor is rectangular,
The inner arrangement member,
A first side provided on one inner surface of the pair of supports, a second side provided on the other inner surface of the pair of supports, and an upper end of the first side under the pair of finger plates and a waterproofing member including an upper surface connecting an upper end of the second side portion; and
A plurality of fixing members are provided along the lateral direction for each of the pair of supports, and include a fixing member for fixing each of the first side and the second side to each of the pair of supports,
The fixing member is
a fixing plate provided on an inner surface of each of the first side and the second side; and
and a fixing part for fixing the fixing plate to each of the pair of supports,
Further comprising a liquid movement guide member extending along the lateral direction on the upper surface portion,
The liquid movement guide member is made of a polyester fabric, a tube in which a hollow portion extending in the transverse direction is formed,
In the hollow part, the cross-sectional area of each of the transverse direction side part and the transverse direction other side part is the cross-sectional area of the transverse direction middle part so that capillary force to each of the transverse direction side and the other transverse direction acts with respect to the liquid in the hollow part. formed smaller,
The linear member is an SMA (Shape Memory Alloy) linear member that is deformable in a first state that is low temperature based on a preset temperature, and is set to be restored to an initial shape in a second state that is high temperature based on the preset temperature. ,
An expansion joint device for a bridge, in which an adsorption part to be adsorbed to the pair of finger plates is formed on a surface of the upper surface part opposite to each of the pair of finger plates. delete delete delete delete

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