KR100760678B1 - Expansion joint apparatus for bridge structure - Google Patents

Abstract

An expansion joint apparatus for a bridge structure is provided to prevent problems due to excessive tightening or loosening by controlling the fastening degree of a longitudinal supporting member by a guide member properly. An expansion joint apparatus for a bridge structure installed between bottom plates comprises a lateral beam member(200), a longitudinal supporting member(300), a guide member(400), a supporting box(500), and an expansion transmission member(600). The lateral beam member is placed in the direction perpendicular to the throttle. The longitudinal supporting member supporting the lateral beam member is placed under the lateral beam member in the direction of the throttle. The guide member guides the lateral beam member to move along the longitudinal supporting member in the direction of the throttle when the bottom plate is expanded to be combined to the lower part of the lateral beam member. The supporting box is installed at the both ends of the longitudinal supporting member. The expansion transmission member is installed at the lower part of the lateral beam member to transmit the expansion of the bottom plate to the lateral beam member, to move the lateral beam member and a finger plate along the longitudinal supporting member in the direction of the throttle. The guide member is composed of a vertical unit(401) attached to the lower surface of the lateral beam member to surround the side surface of the longitudinal supporting member, a horizontal unit(402) assembled to the end of the vertical unit to control the fastening degree of the longitudinal supporting member, and a movement range restriction member(700) for the lateral beam member. The movement range restriction member includes a longitudinal slot(701) to which a projection(405) of the guide member is fitted.

Description

Expansion Joint Apparatus for Bridge Structure}

1 is a perspective view showing a schematic configuration of an expansion joint according to an embodiment of the present invention.

FIG. 2 is a perspective view schematically showing a state where the expansion joint shown in FIG. 1 is viewed from below. FIG.

Figure 3 is an enlarged exploded view showing an enlarged circle C portion of Figure 2 to show the combined state of the protrusion of the movement range limiting member and the guide member provided in the expansion joint device of the present invention.

Figure 4 is a partial cross-sectional view according to the line D-D of Figure 3 showing a configuration in which the protrusion is inserted into the slot in the state in which the elastic bushing is fitted as an embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

100 fingerplates

200 transverse beam members

300 longitudinal support members

400 guide member

500 support box

600 telescopic transfer member

The present invention relates to a new expansion joint device for bridges, and more particularly to a new expansion and contraction operation is made smoothly, the new expansion bridge construction configured so that the expansion gap is evenly distributed without excessive expansion joint device It relates to a joint device.

Between the bottom plates of the bridge, expansion joints are installed to allow movement along the expansion and contraction of the bottom plates. The expansion joint device includes a rail-type expansion joint device having a plurality of lateral beam members disposed at right angles to the axial direction of the bridge bottom plate, and a finger plate provided on the lateral beam member. There is a finger plate type expansion joint to engage. In the expansion joint device, when the bottom plate is moved by the expansion and contraction, the gap between the transverse beam members is widened or narrowed to allow expansion and contraction, thereby preventing the gap between the bottom plates. Of course, in the finger plate type expansion joint device, expansion and contraction occurs while the finger plates are engaged with each other. The finger plate may be provided in plurality.

However, in the conventional finger plate type expansion joint device, breakage occurs frequently due to large tensile stress acting on the lower surface of the rail member supporting the finger plate.

In addition, when there is an inclination of the bottom plate in the axial direction, there is a problem that the step is present in the expansion joint, so that the noise and vibration occurs when the vehicle passes, and the finger plate is easily worn or damaged. exist.

In particular, in the conventional expansion joint device, the movement of the lateral beam member is not smooth, and the expansion and contraction action is often insufficient, and the interval between the plurality of lateral beam members is uneven during the expansion and contraction action. Therefore, there is a problem that the distance between the transverse beam members is excessive, which is a risk factor for traffic.

In addition, it is pointed out that the impact caused to the transverse beam member due to the traffic of the vehicle causes vibration and noise.

The present invention was developed in order to solve the problems of the conventional expansion joint device as described above, the transverse beam member of the expansion joint device to move smoothly so that the stretching action is sufficient, a plurality of transverse It is an object of the present invention to provide an expansion joint device in which an interval between the directional beam members is uniformly generated and at the same time an excessively large gap is not generated between the lateral beam members.

In addition, the present invention is to prevent the impact of the finger plate as well as the transverse beam member at the bottom of the vehicle passage, and to prevent the generation of vibration and noise according to, and the wear of the finger plate even if there is an inclination in the axial direction And it is an object of the present invention to provide an expansion joint device that can minimize damage and to prevent excessive tensile stress acting on the transverse beam member to prevent the transverse beam member from being broken.

In order to achieve the above object, in the present invention, the expansion joint is installed between the bottom plate and the bottom plate, the transverse beam member disposed in the direction perpendicular to the axial axis, and disposed in the axial direction at the lower portion of the transverse beam member The lateral beam member supports the lateral beam member and is coupled to a lower portion of the lateral beam member in a form of wrapping the longitudinal support member and the longitudinal support member so that the lateral beam member is adapted to support the longitudinal support member. A guide member for guiding movement in the axial direction, a support box installed at both ends of the longitudinal support member and embedded at an end of the bottom plate, and a lower portion of the transverse beam member between the adjacent transverse beam members. Installed to transfer the expansion and contraction of the bottom plate between the transverse beam member so that the transverse beam member and its finger plate along the longitudinal support member Including the new transmission member so that the axial expansion and contraction movement in the direction, and; The guide member may be attached to a lower surface of the transverse beam member to cover a side of the longitudinal support member and to adjust the tightening degree of the longitudinal support member while supporting the lower surface of the longitudinal support member. The expansion joint is provided, characterized in that composed of a horizontal portion assembled to the end of the vertical portion.

In the present invention, as an embodiment of the expansion joint device, the expansion member is provided with a movement range limiting member for limiting the expansion and movement range of the transverse beam member in the guide member.

In addition, in the present invention, as another embodiment of the expansion joint device, the movement limiting member has a longitudinal slot having a length corresponding to the elastic movement range to be limited, and the movement range limiting member is a side of the guide member. Provided is an expansion joint device, characterized in that the protrusion formed in the guide member is installed in the state fitted to the slot. In such a configuration, the protrusion may be fitted in the slot in a state in which an elastic bushing for maintaining a constant distance between the end portion and the vertical portion of the protrusion by elastic force is fitted to the outside thereof.

In addition, in the present invention, as another embodiment of the expansion joint device, in the above-described configuration, the lateral beam member is an expansion joint device comprising an "I" shaped cross section having an upper flange, a web and a lower flange. Is provided. A finger plate may be coupled to an upper portion of the lateral beam member. In this case, the finger plate may be made of an aluminum alloy, and the finger plate may include a countersunk head bolt having an inclined lower surface of the head and a transverse ring. Preferably, the bolt is assembled to the upper surface of the directional beam member. In particular, when the finger plate is provided as above, the lateral beam member is made of an "I" -shaped cross section having an upper flange, a web and a lower flange, the thickness of the lower flange is preferably thicker than the thickness of the upper flange. Do.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the configuration and effect of the stretching device according to a preferred embodiment of the present invention. In the following description, the present invention is described by taking a finger plate type expansion joint device having a finger plate installed on an upper portion of the lateral beam member as an example, but the present invention is not limited to the finger plate type expansion joint device, but is in the transverse direction. The same applies to rail type expansion joints in which the finger plate is not installed in the beam member.

1 is a perspective view showing a schematic configuration of a finger plate type expansion joint device 1 according to an embodiment of the present invention, Figure 2 is a view looking up from the expansion joint device 1 shown in FIG. It is a schematic perspective view.

As shown in the figure, the finger plate type expansion joint 1 has a finger plate 100a, 100b, and in the direction perpendicular to the axis of the finger plate 100b (cross direction) (arrow B direction in FIG. 1). A transverse beam member 200 arranged to support the finger plate 100b and a transverse direction (longitudinal direction) (arrow A direction in FIG. 1) at a lower portion of the transverse beam member 200 and arranged in the transverse direction. Longitudinal support member 300 for supporting the beam member 200, and coupled to the lower portion of the lateral beam member 200 in the form of wrapping the longitudinal support member 200, the lateral beam member 200 The guide member 400 for guiding the movement in the axial direction along the longitudinal support member 300, and the support box is installed at both ends of the longitudinal support member 300 and embedded in the structure at the expansion joint ( 500) and installed on the transverse beam member 200 to transversely stretch the structure. It has a configuration including a stretchable transmission member 600 for transmitting between the direction beam member 200. In the drawing, the member number 800 is a dirt receiver 800 for receiving dirt or sewage flowing between the finger plates 100. As described above, the present invention can be carried out in the form of a rail-type expansion joint device by omitting the finger plate 100.

The finger plate 100 is composed of an outer finger plate (100a) and the inner finger plate (100b) is disposed on the outside, the outer finger plate (100a) is coupled to the support box 500, respectively, the bottom plate end of the structure The inner finger plate 100b fixed to and disposed therebetween is integrally coupled with the lateral beam member 200, respectively. The finger plates 100 are formed with protruding fingers 110 so as to face each other. In the present invention, the number of the finger plates 100 and the number of the lateral beam members 200 coupled thereto are not limited thereto and may be appropriately changed to suit the site conditions.

Steel may be used as the finger plate 100, and the use of an aluminum alloy may not only increase durability, but also when the step is caused by a wide space between the finger plates 100 or a gradient in the axial direction. In addition, the wear and tear of the vehicle is naturally reduced according to the gradient, thereby reducing the noise and vibration of the vehicle. On the other hand, in the structure of assembling the finger plate 100 to the lateral beam member 200, as shown in the figure, the lower head of the head is inclined countersunk bolt 120 and the urethane or rubber material fitting When the ring 130 is used, the fitting ring 130 prevents the countersunk head bolt 120 from being loosened, thereby making a strong assembly between the finger plate 100 and the lateral beam member 200, and the fitting ring. Not only the vibration and shock absorbing effect is exerted by the 130, but also the watertight sealing of the bolt ball of the finger plate 100 can prevent the penetration of water through the bolt hole of the finger plate 100. The effect that there is is exerted.

In the present invention, the lateral beam member 200 is disposed in the direction perpendicular to the axial axis in the lower portion of the finger plate 100 to support the finger plate 100 while the finger plate 100 in accordance with the expansion and contraction of the bridge bottom plate ) Can move along the longitudinal support member 200 in the axial direction. The cross-sectional shape of the lateral beam member 200 is not particularly limited, but as shown in the figure, the lateral beam member 200 coupled with the inner finger plate 100b includes the upper flange 210 and the web 230. And a "I" shaped cross section having a lower flange 220. At this time, it is particularly preferable that the thickness of the lower flange 220 is thicker than the thickness of the upper flange 210. Because in the state where the finger plate 100 is coupled to the upper flange 210, the thickness of the lower flange 220 and the thickness of the coupling cross section of the upper flange 210 and the finger plate 100 become similar, resulting in excessive tensile stress. This is because deformation and destruction of the lower flange 220 can be prevented.

In addition, the upper surface of the upper flange 210 is preferably formed in a flat surface so that the finger plate 100 is in close contact and coupled, the lower surface of the lower flange 220, even if the angle to which the load is applied can be stably supported. It is preferable that it is formed in a curved surface. As described above, the horizontal beam member 200 having the "I" -shaped cross section can be easily made by inverting the existing railroad rail and properly cutting the left and right widths. However, as described above, the lateral beam member 200 is not limited to the "I" -shaped cross-section member as described above, it may be made of a member having a rectangular cross section or other cross-section of various shapes.

Between the transverse beam members 200 adjacent to each other, a telescopic transmission member 600 for transferring the telescopic movement of the bridge bottom plate to each of the transverse beam members 200 is provided over the two transverse beam members 200. It is. As shown in FIG. 2, the stretchable transmission member 600 is provided between the mounting plate 601 and the mounting plate 601 attached to protrude on the lower surfaces of the horizontal beam members 200 adjacent to each other. It is composed of an elastic member 602 provided.

A longitudinal support member 300 is disposed below the lateral beam member 200 in the axial direction. Both ends of the longitudinal support member 300 are positioned to allow movement in the axial direction in the support box 500. Each support box 500 is integrally embedded in the bottom plate by a stud member 501 or the like.

On the other hand, the longitudinal support member 300 is a guide function such as a rail when the transverse beam member 200 moves in the axial direction. Specifically, in a state in which the transverse beam member 200 is disposed vertically on the longitudinal support member 300 disposed in the axial direction, that is, in the perpendicular direction of the axial direction, the guide member 400 is the longitudinal support member 300. Wrapping is attached integrally to the lower surface of the transverse beam member 200. That is, the upper end of the guide member 400 is integrally attached to the lower surface of the lateral beam member 200 while the guide member 400 surrounds the longitudinal support member 300.

In the U-shaped configuration of the guide member 400 as described above, in the present invention, as shown in the figure, is attached to the lower surface of the lateral beam member 200 to surround the side of the longitudinal support member 300 The U-shaped guide member 400 is formed by a vertical portion 401 and a horizontal portion 402 assembled to an end of the vertical portion 401 while supporting the lower surface of the longitudinal support member 300. Shock absorbing to absorb shock between the lower surface of the longitudinal support member 300 and the upper surface of the horizontal portion 402, and between the upper surface of the longitudinal support member 300 and the lower surface of the transverse beam member 200. The member 403 is interposed. In the horizontal portion 402 is assembled to the end of the vertical portion 401, in the present invention has a configuration that can adjust the degree of tightening the guide member 400 wraps around the longitudinal support member (300). For example, as shown in the figure, when the horizontal portion 402 is assembled to the end of the vertical portion 401 by a bolt, by adjusting the tightening degree of the bolt guide member 400 is the longitudinal support member 300 You can adjust the strength of tightening.

As such, when the guide member 400 adjusts the strength of tightening the longitudinal support member 300, the degree of friction when the lateral beam member 200 moves along the longitudinal support member 300 can be easily adjusted. Will be. As described above, the transverse beam member 200 moves along the longitudinal support member 300 in the state where the shock absorbing member 403 is interposed, and if the guide member 400 is too tight, the transverse beam Since the member 200 cannot move along the longitudinal support member 300 smoothly, the stretching action is not properly exhibited. On the other hand, when too loosely tightened or a space is created between the longitudinal support member 300 and the shock absorbing member 403, the vertical support member 300 when a vehicle or the like passes over the expansion joint and acts as a vertical load. The impact is applied to, and as a result, noise and vibration are generated, as well as fatigue failure may occur in the longitudinal support member 300.

By the way, in the present invention, the guide member 400 is manufactured as the vertical portion 401 and the horizontal portion 402 as described above, and by having a configuration that can adjust the tightening degree of the horizontal portion 402, in the field situation and use state By appropriately adjusting the tightening degree of the horizontal portion 402 can be prevented in advance such problems as the occurrence of noise / vibration, and the fatigue load on the longitudinal support member (300).

In addition, when the shock absorbing member 403 is worn out or damaged due to long-term use, it is necessary to replace the shock absorbing member 403 after separating the horizontal part 402 assembled to the vertical part 401. Can be replaced. As described above, in the present invention, since the shock absorbing member 403 can be easily replaced with a simple operation, maintenance is easy.

On the other hand, if the two lateral beam members 200 are moved to be excessively far apart from each other, the distance between the upper finger plate 100 is too large, thereby impacting the vehicle passing therethrough It will adversely affect the back. In particular, it is very disadvantageous that the spacing between the finger plates 100 is uneven so that only a certain spacing is excessively large. Therefore, it is necessary to limit the telescopic movement range of the lateral beam member 200 so that the space between some of the lateral beam members 200 is not excessively widened and the spacing between the lateral beam members 200 is evenly overall. have. To this end, in the present invention, the movement range limiting member 700 for limiting the stretching movement range of the transverse beam member 200 is provided in the guide member 400.

3 is an enlarged exploded view showing an enlarged portion of circle C of FIG. 2, as in the embodiment shown in the drawing, the moving range limiting member 700 has a length that fits the stretching range. It has a slot 701, the protrusion 405 formed on the side of the guide member 400 is installed to fit in the slot 701. Therefore, the neighboring lateral beam members 200 are prevented from spreading apart from each other beyond the length of the slot 701, thereby exhibiting the effect of limiting the amount of stretch movement within the required range.

Meanwhile, in installing the protrusion 405 installed on the guide member 400 to be inserted into the slot 701 of the moving range limiting member 700, an elastic bushing 406 for maintaining the gap outside the protrusion 405. ), The protrusion 405 is preferably inserted into the slot 701 in a state of being fitted.

4 is a partial cross-sectional view taken along the line D-D of FIG. 3 showing a configuration in which the protrusion 405 is fitted into the slot 701 in the state in which the elastic bushing 406 is fitted as described above. As shown in the figure, as an example of a method of forming the protrusion 405, there is a method of bolting the bolt to the vertical portion 401 of the guide member 400, the bolt is elastic made of an elastic material such as urethane It can be configured to fit in the slot 701 of the moving range limiting member 700 in the state inserted through the bushing 406.

If the protruding portion 405 is installed in close contact with the vertical portion 401 while being inserted into the slot 701, the guide member 400 may be caused by friction between the moving range limiting member 700 and the vertical portion 401. May not move smoothly or severe friction noise may occur. However, when the elastic bushing 406 is provided as above, a constant distance is maintained between the end portion of the protrusion 405 and the vertical portion 401 by the elastic force of the elastic bushing 406, and thus the protrusion 405 as described above. Excessive friction between the moving range limiting member 700 and the vertical portion 401 due to the close installation of the movement and the resulting difficulty of movement, it is possible to prevent the occurrence of problems, such as noise. In the present invention, the installation position and the number of the moving range limiting member 700 are not limited to those shown in the drawings and may be changed as necessary.

Next will be described the operation of the expansion joint device 1 according to the present invention having the configuration as described above.

Since both sides of the support box 500 are embedded at the end of the bottom plate, when the bottom plate is stretched, the support box 500 is stretched along the end of the longitudinal support member 300. For example, when the bottom plate is shrunk in a direction approaching each other, the support box 500 is also approached to each other, the outer finger plate 100a is attached to the support box 500, so that the expansion of the support box 500 Accordingly, the outer finger plate 100a also moves in the direction of the neighboring inner finger plate 100b. Between the transverse beam member 200 supporting the outer finger plate 100a and the transverse beam member 200 supporting the neighboring inner finger plate 100b and the transverse direction supporting the inner finger plate 100b. The elastic member 601 is provided between the beam members 200, and the elastic member 601 is contracted by the elastic member 601. The distance between the members 200 and the finger plate 100 is narrowed. At this time, the lateral beam member 200 is moved to be narrowed with each other along the longitudinal support member 300 by the guide member 400.

When the lateral beam member 200 is moved along the longitudinal support member 300, in the present invention, it is provided with a configuration that can adjust the tightening degree of the longitudinal support member 300 by the guide member 400, In the state in which the tightening degree of the longitudinal support member 300 is not too loose or tight, the first support member 200 may smoothly move along the longitudinal support member 300. Therefore, it is possible to prevent the occurrence of impact on the longitudinal support member 300 due to too tight tightening of the guide member 400, or the occurrence of noise / vibration and fatigue breakage due to the tightening of the guide member 400 in advance. It becomes possible.

On the other hand, when the bottom plate is extended in a direction away from each other, the outer finger plate 100a is also moved away from the neighboring inner finger plate 100b, at this time, the elastic member 601 of the stretchable transmission member 600 is elastic By expanding, the lateral beam members 200 are moved evenly apart from each other, so that the finger plate 100 is disposed in an unfolded state in accordance with the gap between the bottom plates that are separated from each other. At this time, in the present invention, because the movement range limiting member 700 is provided in the guide member 400, the distance between the transverse beam member 200 is limited by the movement range limiting member 700, and thus the bottom plate The total elongation distance of is evenly distributed between each lateral beam member 200, the effect of the finger plate 100 is arranged at even intervals therebetween.

As described above, according to the present invention, in the present invention, the tightening degree of the longitudinal support member 300 through the configuration that can adjust the tightening degree of the longitudinal support member 300 by the guide member 400 Can be adjusted properly, and difficulty moving due to excessive tightening. It is possible to prevent the occurrence of shock, noise / vibration and fatigue breakdown caused by excessive looseness.

In addition, if necessary, it is possible to easily replace the shock absorbing member 403 by removing the horizontal part 402 assembled to the vertical part 401, so that the effect of facilitating the maintenance of the shock absorbing member 403 is easy. Is exerted.

In addition, in the present invention, it is possible to limit the distance between the transverse beam member 200 through the moving range limiting member 700 provided in the guide member 400, and thus the gap between the finger plate 100 is excessively widened. It can be prevented, so that the finger plate 100 is arranged at even intervals, it is possible for the vehicle or the like to pass through the expansion joint securely.

In addition, when the finger plate 100 is made of an aluminum alloy, durability is enhanced, and even if a step is caused by a wide space between the finger plates 100 or a gradient in the axial direction, the step is made through natural wear. By reducing, the effect which can remarkably reduce the noise and vibration of a vehicle is exhibited.

In addition, the assembling of the finger plate 100 to the transverse beam member 200 by using the inclined countersunk bolt 120, and the fitting ring 130 of urethane or rubber material and transverse to the finger plate 100 As well as the rigid assembly between the directional beam member 200, the effect of preventing vibration and shock absorption, and moisture penetration through the bolt hole of the finger plate 100 is exerted.

In addition, a transverse beam member having an upper flange 210, a web 230, and a lower flange 220, the lower flange 220 has an "I" cross section thicker than the thickness of the upper flange (210) When using the 200, when the finger plate 100 is coupled to the upper flange 210, the thickness of the lower flange 220, the thickness of the coupling cross-section of the upper flange 210 and the finger plate 100 is similar, The effect of preventing deformation and destruction of the lower flange 220 due to excessive tensile stress is exerted. In particular, if the lower surface of the lower flange 220 is formed in a curved surface it is possible to enjoy the effect that can be stably supported even if the angle to which the load is applied.

Claims (8)

Expansion joint is installed between the bottom plate and the bottom plate, A transverse beam member 200 disposed in a direction perpendicular to the axial axis; It is disposed in the axial direction in the lower portion of the transverse beam member 200 to support the transverse beam member 200 and the longitudinal support member 300, The transverse beam member 200 is axially oriented along the longitudinal support member 300 when the bottom plate is stretched by being coupled to the lower portion of the transverse beam member 200 in a form of wrapping the longitudinal support member 200. A guide member 400 for guiding movement in the direction, A support box 500 installed at both ends of the longitudinal support member 300 and embedded in an end of the bottom plate; It is installed under the lateral beam member 200 across the adjacent lateral beam member 200 to transfer the expansion and contraction of the bottom plate between the lateral beam member 200 and the lateral beam member 200 and its upper portion. The finger plate 100 includes an elastic transfer member 600 for stretching in the axial direction along the longitudinal support member 300; The guide member 400 is attached to the lower surface of the lateral beam member 200, the vertical portion 401 to surround the side of the longitudinal support member 300 and the longitudinal support member 300 It is composed of a horizontal portion 402 is assembled to the end of the vertical portion 401 to adjust the tightening degree of the longitudinal support member 300 in a state supporting the lower surface, The guide member 400 is provided with a moving range limiting member 700 for limiting the stretching range of the transverse beam member 200, The moving range limiting member 700 has a longitudinal slot 701 having a length that fits the stretching range. The movement range limiting member 700 is installed in the guide member 400 so that the protrusion 405 formed on the side surface of the guide member 400 is fitted to the slot 701. delete delete The method of claim 1, The protrusion 405 is inserted into the slot 701 in a state in which an elastic bushing 406 is fitted to the outside of the protrusion 405 to maintain a constant distance between the end of the protrusion 405 and the vertical portion 401 by elastic force. Expansion joint device characterized in that the loss. The method of claim 1, The lateral beam member 200 is an expansion joint device, characterized in that made of "I" -shaped cross section having an upper flange 210, the web 230 and the lower flange 220. The method of claim 1, Stretch joint device, characterized in that the finger plate 100 is coupled to the upper portion of the horizontal beam member (200). The method of claim 6, The finger plate 100 is made of an aluminum alloy, The finger plate 100 is the expansion joint device characterized in that the bolt is assembled to the upper surface of the transverse beam member 200 by the countersunk head bolt 120 and the fitting ring 130, the lower surface of the head . The method of claim 7, wherein The lateral beam member 200 is made of an "I" type cross section having an upper flange 210, a web 230 and a lower flange 220, The lower flange 220 has a thickness of the expansion joint, characterized in that thicker than the thickness of the upper flange (210).

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