JP2009545687A - Seismic expansion joint - Google Patents

Abstract

To provide an earthquake-resistant expansion joint that can be installed and dismantled more easily and can handle triaxial behavior. The earthquake-resistant expansion joint includes a hinge shaft support member attached to one end of one of the bottom plates constituting the bridge or the elevated road, and slides in the lateral direction of the bridge or the elevated road along the central axis of rotation. A hinge finger plate member that is pivotally connected to the hinge shaft support member and is hinged to the hinge shaft support member at one end thereof, and is engaged with the other end of the hinge finger plate member at one end thereof. A finger plate member that corrects a gap between the bottom plates according to the variation of the gap, and further, the finger plate member contacts one bottom plate so that the finger plate member slides in a lateral direction of a bridge or an elevated road. A finger plate support member fixed to another bottom plate and slidably supporting the finger plate member.

Description

The present invention relates to an earthquake-resistant expansion joint, and more particularly, to an earthquake-resistant expansion joint that can perform a three-axis operation by applying a hinge structure to a finger-type expansion joint, thereby reducing damage to an elevated road or a bridge due to an earthquake. .

In general, a relatively long bridge having a plurality of piers includes a plurality of bottom plates divided in the longitudinal direction in order to cope with expansion and contraction of the bridge caused by temperature fluctuations, and expansion joints installed between the bottom plates. have.

As shown in FIGS. 1 and 2, the conventional expansion joint for a bridge includes upper cover plates 101a and 101b which are connected to each other and installed at both ends of the bottom plate so as to be developed in response to temperature fluctuations. An anchor bolt 102 for fastening the upper cover plates 101a and 101b to the hardened concrete 105 and a fastening force between the anchor bolt 102 and the hardened concrete 105 are increased to reinforce the strength of the hardened concrete 105. And a rainwater / foreign material recovery rubber waterproofing member 104 fixed to each of the hardened concrete 105 on both sides thereof. Reference numeral 106 designates a reinforcing bar arranged on the bottom plate of the bridge.

In the event of an earthquake, the conventional expansion joint for bridges having the above structure can be moved in the vehicle movement direction within the expansion range, but the expansion joint can be moved laterally, that is, perpendicular to the vehicle movement direction. Impossible. In addition, when the waist wall of the abutting part moves in the vertical direction when an earthquake occurs, the expansion joint cannot move in the longitudinal direction, so the bottom plate installed on the bridge, the beam, and other structures to which the expansion joint is connected Objects can be damaged by earthquakes. As a result, the bottom slab may be separated from the bridge.

Further, the rubber waterproofing member 104 is connected to the concrete bottom slab by anchor bolts 102 before the upper cover plates 101a and 101b are installed. Next, the upper cover plates 101a and 101b are installed, and a nut is tightened on the anchor bolt 102, thereby completing the installation of the expansion joint. Therefore, when the rubber waterproof member 104 is damaged, the damaged rubber waterproof member 104 must be replaced by removing the upper cover plates 101a and 101b after traffic control. In addition, the damaged rubber waterproofing member may cause water leakage, thereby causing further damage and reducing the structure.

Accordingly, the present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide an earthquake-resistant expansion joint that moves in three axial directions and responds to an earthquake.

Another object of the present invention is to provide an earthquake-resistant expansion joint that is easy to install and can replace a rubber waterproofing member.

Other objects and advantages of the present invention will be understood by the following description, and become apparent with reference to embodiments of the present invention. It will be apparent to those skilled in the art that the objects and advantages of the present invention can be realized by the means recited in the claims and combinations thereof.

According to one aspect of the present invention, an earthquake-resistant expansion joint is provided, and the earthquake-resistant expansion joint includes a hinge shaft support member attached to one end of one bottom slab constituting a bridge or an elevated road, and its rotation A hinge finger plate member pivotally connected to the hinge shaft support member so as to slide laterally along a central axis along a bridge or an elevated road, and hinged to the hinge shaft support member at one end thereof; A finger plate member that engages with the other end of the hinge finger plate member at one end thereof and corrects a gap between the bottom plates according to a change in the gap, and further, the finger plate member is a bridge or an elevated road A finger plate support member fixed to another bottom plate that contacts one bottom plate so as to slide in the lateral direction and slidably supporting the finger plate member.

In the earthquake-resistant expansion joint according to the present invention, when the bottom plate moves in the X-axis direction (longitudinal direction), Y-axis direction (lateral direction), and Z-axis direction (vertical direction) of the bridge due to the earthquake, it corresponds to the problem caused by the earthquake. Therefore, the gap between the hinge finger plate member and the finger plate member is adjusted, and the hinge finger plate member and the finger plate member are rotated or slid in the X-axis direction, the Y-axis direction, and the Z-axis direction. To prevent.

In addition, the hinge fingerboard member and the fingerboard member are divided into sections and fixed by connecting members for easy assembly and disassembly, thereby reducing working time.

Further, when an earthquake occurs, the sliding plate of the rubber waterproof member slides along the inner guide rail or deforms the pleated portion of the rubber waterproof plate to prevent the rubber waterproof member from being damaged. . Further, since the outer guide rail is fixed by the adhesive, it can be easily installed and disassembled, thereby shortening the working time.

The above and other objects and features of the present invention will become more apparent from the following description of preferred embodiments in conjunction with the accompanying drawings.

It is a top view of the conventional expansion joint.

It is sectional drawing of the said conventional expansion joint.

1 is a plan view of a seismic expansion joint according to an exemplary embodiment of the present invention.

It is sectional drawing of the earthquake-proof expansion joint shown in FIG.

It is sectional drawing along the AA line shown in FIG.

It is a figure which shows the behavior of the longitudinal direction of the earthquake-proof expansion joint described in FIG.

It is a figure which shows the behavior of the horizontal direction of the earthquake-proof expansion joint of the said FIG.

It is a figure which shows the behavior of the orthogonal | vertical direction of the earthquake-resistant expansion joint shown in FIG.

It is a perspective view of the rubber waterproofing member shown in FIG.

It is sectional drawing which shows the rubber member inserted in order to prevent the foreign material permeation into the hinge groove | channel shown in FIG.

Hereinafter, an earthquake-resistant expansion joint according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a plan view of the earthquake-resistant expansion joint according to the exemplary embodiment of the present invention, FIG. 4 is a cross-sectional view of the earthquake-resistant expansion joint shown in FIG. 3, and FIG. FIG. 6 is a cross-sectional view taken along line A, FIG. 6 is a diagram illustrating the behavior in the longitudinal direction of the seismic expansion joint shown in FIG. 4, and FIG. 7 is a cross-sectional view of the seismic expansion joint shown in FIG. FIG. 8 is a diagram illustrating the behavior in the vertical direction of the earthquake-resistant expansion joint shown in FIG. 4, and FIG. 9 is a perspective view of the rubber waterproof member shown in FIG.

As shown in the drawings, the earthquake-resistant expansion joint according to an exemplary embodiment of the present invention is an apparatus for connecting a plurality of bottom plates 1 and 2 constituting a bridge or an elevated road to each other. A hinge shaft support member 10 mounted on one end of the bottom plate 1 and a hinge finger plate member 20 which is pivotally connected to the hinge shaft member 10 and hinged at one end thereof so as to be slidable along the rotation center axis. And a finger plate member 30 connected to the hinge finger plate member 20 and fixed to another bottom plate 2 in contact with the bottom plate 1 and sliding the finger plate member 30 in the horizontal direction, that is, in the lateral direction of the bottom plate 2. A fingerboard support member 40 that is freely supported and a rubber waterproofing member 50 that is installed between the opposed bottom plates 1 and 2 to prevent intrusion of rainwater and contaminants are included.

More specifically, the hinge shaft support member 10 is arranged in series at one end of the bottom slab 1 in the lateral direction, and fixed thereto with an anchor bolt. The hinge shaft support member 10 having a circular hinge groove 11 recessed in the exposed upper surface is mounted on the bottom plate 1, where the hinge groove 11 extends in the longitudinal direction thereof.

The hinge fingerboard member 20 is formed of a plate member having a predetermined width and length and covering a part of a gap between the bottom plates 1 and 2, and is formed at one end of the hinge fingerboard member 20, A pivot shaft 21 that is pivotably and slidably mounted in the hinge groove 11 and functions as a pivot center axis, and a finger portion that is formed at the other end and protrudes at a predetermined interval Hinge fingers 22 forming The rotating shaft portion 21 has a cylindrical shape that is detachable from the hinge finger plate member 20, is inserted into the hinge groove 11, and is fixed to one end of the hinge finger plate member 20 with a bolt for integration. Is done. As shown in FIG. 10, in order to prevent rainwater and foreign matter from entering the hinge groove 11 from above, the rubber member 26 is narrowed between the rotating shaft portion 21 and the hinge shaft support member 10. You may enter. A lower part of the rubber member 26 is inserted into a groove 21 a formed in the rotating shaft part 21, and an upper part of the rubber member 26 has a dharma-shaped sectional view in contact with the inner wall of the hinge shaft support member 10.

The finger plate member 30 has a predetermined width and length and is formed of a plate member that covers a part of the gap between the bottom plates 1 and 2, protrudes from one end thereof, and corresponds to the hinge finger portion 22. And a rail portion 32 protruding from the other end and having an enlarged cross section at the protruding end portion. The rail portion 32 extends in the longitudinal direction. In addition, the hinge fingerboard member 20 and the fingerboard member 30 are arranged in the lateral direction of the bottom plates 1 and 2 and are divided into a plurality of parts in the longitudinal direction. The hinge finger member 20 and the finger plate member 30 separated from each other are connected to connecting members 24 and 34, respectively. As shown in FIG. 5, the insertion grooves 24a and 34a that are recessed to a predetermined depth have the hinge finger plate member 20 and the finger plate member so that the connection members 24 and 34 are inserted therein. 30 is formed at the connection portion between the two. With the connection members 24, 34 inserted into the insertion grooves 24 a, 34 a, bolts 25, 35 penetrating both ends of the connection members 24, 34 are connected to the hinge finger plate member 20 and the finger plate member 30. Thus, the hinge fingerboard member 20 and the fingerboard member 30 can be kept in a state of being arranged in series.

The finger plate support member 40 is formed of a plate member bent vertically at one end thereof, and is slidably engaged with a fixing plate 41 fixed to the bottom plate 2 by an anchor bolt and the rail portion 32, and a bolt And a guide block 42 having a guide portion 42a fixed to the fixed plate 41 by 43, and a fixed bushing 44 fixed to the fixed plate 41 to which a bolt 43 is fastened. In addition, a vibration isolating member 45 and an antiseptic plate 46 are disposed between the finger plate member 30 and the finger plate support member 40. The anti-vibration member 45 is made of a rubber material that absorbs an impact sound generated when the vehicle passes, and preferably has a sufficient area to cover the upper end portion of the fixed plate 41. The antiseptic plate 46 has an area sufficient to cover the upper end portion of the vibration isolating member 45, and prevents corrosion of the finger plate member 30 and other components due to intrusion of rainwater.

The rubber waterproofing member 50 is a rubber having a hook 51a having a plate shape and a fold-like portion formed at the central portion corresponding to expansion and contraction in the lateral direction and enlarged cross sections formed at both ends thereof. A rubber waterproof plate 51 made of a material, a sliding plate 52 surrounding the hook 51a and extending along the hook 51a to reduce frictional force, and a cross section surrounding the sliding plate 52 And an inner guide rail 53 disposed in the lateral direction of the bottom plates 1 and 2, and a cross-section surrounding the inner guide rail 53, and the inner guide rail 53 is connected to the inner guide rail 53. And an outer guide rail 54 that removes the level difference of the connecting parts and adheres to both sides of the bottom plates 1 and 2 with an adhesive. The outer guide rail 54 may be attached to the side surface of the bottom plate 1 or the side surface of the hinge shaft support member 10.

The operation of the earthquake-resistant expansion joint having the above structure will be described below.

As shown in FIG. 6, when the bottom plate moves in the longitudinal direction of the bridge, the earthquake-resistant expansion joint according to an exemplary embodiment of the present invention causes the hinge finger portion 22 and the finger portion 31 to approach or separate from each other. Corresponds to expansion and contraction of the bottom plate. That is, when the gap between the bottom plates 1 and 2 is widened, the length of the overlapping portion of the hinge finger portion 22 and the finger portion 31 is shortened, and when the gap between the bottom plates 1 and 2 is narrowed, The length of the overlapping portion is increased, thereby correcting the expansion and contraction of the bottom plate. At this time, the pleated portion of the rubber waterproof plate 51 of the rubber waterproof member 50 is deformed in accordance with the expansion and contraction of the bottom plate in the longitudinal direction to prevent intrusion of rainwater and contaminants.

As shown in FIG. 7, when the bottom plates 1 and 2 move in the lateral direction of the bridge, the pivot shaft 21 of the hinge finger plate member 20 slides along the hinge groove 11 of the hinge shaft support member 10. Since it moves in the lateral direction of the bridge, it corresponds to the position movement of the bottom slabs 1 and 2. At the same time, the rail portion 32 of the finger plate member 30 slidably supported by the guide portion 42a of the guide block 42 slides along the guide portion 42a to correspond to the position movement of the bottom plates 1 and 2. . That is, as the bottom plates 1 and 2 move in the lateral direction of the bridge, the rail 21 slidably supported by the rotating shaft 21 slidably inserted into the hinge groove 11 and the guide portion 42a. The part 32 slides to correspond to the position movement.

As shown in FIG. 8, when the bottom slabs 1 and 2 are moved in the vertical direction of the bridge by the vibration generated in the vertical direction of the bridge, the rotating shaft portion 21 fixed to the hinge groove 11 is rotated. It moves to respond to fluctuations in its height. That is, when one bottom plate 1 moves and becomes higher than the other bottom plate 2, the hinge finger plate member 20 rotates downward around the rotation shaft portion 21 and the end of the finger portion 22 and the finger The contact state with the finger part 31 of the plate member 30 is maintained. Therefore, it is possible to cope with fluctuations in the height so that the vehicle can pass smoothly. When the other bottom plate 2 moves and becomes higher than one bottom plate 1, the hinge finger plate member 20 rotates upward around the rotation shaft portion 21 and the end portion of the finger portion 22 and the finger plate member 30 to maintain contact with it, thereby responding to variations in its height.

As described above, in the earthquake-resistant expansion joint according to the exemplary embodiment of the present invention, the bottom slabs 1, 2 are caused by the earthquake in the X-axis direction (longitudinal direction), Y-axis direction (lateral direction), and Z-axis direction ( When moving in the vertical direction), the length of the overlapping portion of the hinge finger portion 22 and the finger portion 31 varies, and does the hinge finger plate member 20 and the finger plate member 30 slide in the Y-axis direction? Alternatively, the hinge fingerboard member 20 rotates around the rotation shaft portion 21, thereby dealing with a problem caused by an earthquake.

In addition, the sliding plate 52 of the rubber waterproofing member 50 slides along the inner guide rail 53, or the pleated portion of the rubber waterproofing plate 51 is deformed to deal with a problem caused by an earthquake. Prevents foreign material from entering. Furthermore, since the outer guide rail 54 is fixed by an adhesive, it can be easily installed and disassembled.

Although the invention has been described with reference to specific exemplary embodiments, it is not intended that the invention be limited by the embodiments, but only by the appended claims. It will be appreciated by those skilled in the art that changes or modifications may be made to the embodiments without departing from the scope and spirit of the invention.

Claims (8)

This is an earthquake-resistant expansion joint that slides in the lateral direction of the bridge or elevated road along the pivot axis of the hinge shaft support member attached to one end of one of the bottom slabs constituting the bridge or elevated road. A hinge finger plate member that is pivotally connected to the hinge shaft support member and is hinged to the hinge shaft support member at one end thereof, and is engaged with the other end of the hinge finger plate member at one end thereof. A finger plate member that corrects a gap between the bottom plates according to the variation of the gap, and further, the finger plate member contacts one bottom plate so that the finger plate member slides in a lateral direction of a bridge or an elevated road. A seismic expansion joint, comprising: a finger plate support member fixed to another bottom plate and slidably supporting the finger plate member. 2. The earthquake-resistant expansion joint according to claim 1, wherein the hinge finger plate member is rotatably and slidably supported by the hinge shaft support member to form a rotation center axis, and the bottom plate. And a hinge finger portion that extends so as to cover a gap between them and forms a finger portion so as to engage with the finger plate member at the other end. 3. The earthquake-resistant expansion joint according to claim 2, wherein the pivot shaft portion is separated from the hinge finger plate member so as to be inserted into a hinge groove formed in the hinge shaft support member, and a bolt is pivoted. An earthquake-resistant expansion joint, wherein the pivot shaft is fastened to a shaft portion and the hinge shaft support member to connect the rotating shaft to the hinge shaft support member. 2. The earthquake-resistant expansion joint according to claim 1, wherein the finger portion projects from one end of the finger plate member so that the finger portion engages with the hinge finger portion of the hinge finger plate member, and the rail portion slides with the finger plate support member. An earthquake-resistant expansion joint that protrudes from the other end in a stepped manner so as to be freely supported. 5. The earthquake-resistant expansion joint according to claim 4, wherein the fingerboard support member includes a fixed plate fixed to the bottom plate and a guide portion that engages with the rail portion, and slidably supports the rail portion. And a guide block fixed to the fixed plate by a bolt, and a fixed bushing fixed to the bottom plate to which the guide block is fixed by tightening the bolt. . 6. The earthquake-proof expansion joint according to any one of claims 1 to 5, wherein the vibration-proof member is interposed between the finger plate member and the finger plate support member and absorbs vibration and noise generated by a passing vehicle. And an antiseptic plate that is mounted between the vibration isolating member and the finger plate member to easily slide the finger plate member and prevent corrosion caused by rainwater. Seismic expansion joint. The earthquake-resistant expansion joint according to any one of claims 1 to 5, wherein the hinge fingerboard member and the fingerboard member are each divided into a plurality in the longitudinal direction thereof, and both ends of the hinge fingerboard member and the The fingerboard member is connected by a connecting member tightened by a bolt, and an insertion groove is formed in the hinge fingerboard member and the fingerboard member so as to insert the connecting member. Seismic expansion joint. The seismic expansion joint according to any one of claims 1 to 5, further comprising a rubber waterproofing member interposed between the bottom plates and collecting rainwater and foreign matter, wherein the rubber waterproofing member forms a plate shape. The rubber waterproof plate is provided with a hook having an enlarged cross section at both ends thereof, a sliding plate that surrounds the hook of the rubber waterproof plate and reduces the frictional force, and the sliding plate is slidable. An inner guide rail that is disposed in the lateral direction of the bottom slab, and is connected to both side surfaces of the bottom slab with an adhesive by connecting a connecting portion of the inner guide rail without a step. And an earthquake-resistant expansion joint characterized by including.

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