KR100658535B1 - Expansion and contraction joint - Google Patents

Abstract

An expansion joint apparatus is provided to fasten an upper plate stably by modifying a key of a lower plate into wedge type, to cope with earthquake or external force by longitudinally and laterally moving a finger part of the upper plate, and to prevent secondary damage by promptly replacing a damaged rubber plate. An expansion joint apparatus includes finger type upper plates(310a,310b) stepped and combined with key parts of lower plates(320a,320b), the lower plate installed in a lower part of the upper plate to support and fix the upper plate and provided with a groove contacted to an end of a rear plate of the finger part of the upper plate, the key part with a projection for flowing rainwater and distributing load and a horizontal plane vertically extended in the key part to support the upper plate, a bolt(331) fixing the upper plate in the lower plate by penetrating the upper plate and the lower plate, an anchor bolt(340) vertically installed or inclined to fix the lower plate in concrete and to adjust height, and a rubber plate(350) installed to the horizontal plane of the lower plate to collect rainwater and foreign matters in a gap of the finger part of the upper plate. Fingers of the upper plates are horizontally and vertically moved with empty spaces.

Description

Expansion joints {Expansion and contraction joint}

1 is a front sectional view showing a structure for a conventional finger joint expansion device.

Figure 1a is a plan view showing the structure of the finger type expansion joint of Figure 1;

Figure 2 is a front sectional view showing a structure for a finger-type expansion joint made by cutting the conventional H-beam.

Figure 3 is a front sectional view showing the structure of the expansion joint according to the first embodiment of the present invention.

Figure 3a is an enlarged cross-sectional view showing only the expansion joint portion according to the first embodiment of FIG.

Figure 3b is a detailed cross-sectional view of the upper plate and the lower plate of the expansion joint according to the first embodiment of FIG.

Figure 4a is a cross-sectional view showing the stress (tensile force, shear force, resistance moment) applied to the nut portion fastened to the anchor bolt against the working load in the conventional expansion joint of Figure 1;

Figure 4b is a cross-sectional view showing the stress (tensile force, shear force, moment of resistance) acting on the lower plate key member against the working load in the expansion joint of Figure 3;

5A to 5D are views illustrating various embodiments of the stepped structure end of the upper plate and the key portion of the lower plate in the expansion joint according to the first embodiment of the present invention.

6A and 6B are plan views showing a state in which longitudinal movement is possible but transverse movement is impossible in a conventional expansion joint apparatus.

7 is a plan view showing a state that allows the longitudinal behavior according to the temperature and the transverse behavior in the present invention.

8a to 8c are plan views showing various embodiments showing a state in which the transverse movement is possible in the expansion joint according to FIG.

Figure 9a is a front sectional view showing an excellent inflow point in the conventional expansion joint.

Figure 9b is a front sectional view showing a state of the protrusion for giving a binding force to rain inlet and futa concrete in the expansion joint device of the present invention.

Figure 10a is a front sectional view showing the structure of the expansion joint according to the second embodiment of the present invention.

Figure 10b is a cross-sectional view showing the structure of the lower plate in the expansion joint according to a second embodiment of the present invention

Figure 10c is a view showing a removable mechanism of the rubber plate member in the expansion joint according to the second embodiment of the present invention.

Figure 10d is a view showing in detail the coupling state of the rubber plate member roller-type wheel and the guide rail member in the expansion joint according to the second embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

101a, 101b, 310a, 310b, 1010a, 1010b ... top 101f, 601f, 310f, 310s ... finger

102,202 ... Anchors 103,203,303,1003 ... Rebar

104,204,350,1050 ... rubber plate member 105,205,360,1060 ... Futa concrete

106,206,306,1006 ... Slab rebar 107,342,346 ... Nut

201 ... Expansion joint body 320a, 320b, 1020a, 1020b ...

320h, 1020h ... horizontal plane 310k, 320k, 1020k ... kibu

320p ... projection 1020v ... vertical

331,1031 ... Bolt 340,1040 ... Anchor bolt

344 Washers

380 ... high strength steel sheet or FRP plate, high strength concrete member

390 Slab concrete 1052 Roller wheels

1052g ... Wheel fixing member 1054 ... Guide rail member

1055 Connection coupling 1070 Reinforcing plate member

The present invention relates to an expansion joint device employed in expansion joints such as bridges and overpasses, and in particular, a finger that stably fixes the binding between the upper cover plate and the lower plate, and moves only in the longitudinal direction of the conventional finger-type upper cover plate. The present invention relates to expansion joints capable of sufficiently coping with external forces such as earthquakes and wind power by changing the structure of the negative to vertical and horizontal directions.

In general, a wide bridge with a large number of bridges divides the top plate of the bridge into several parts in the longitudinal direction of the bridge to cope with the expansion and contraction of the bridge according to temperature changes, and installs expansion joints between the divided top plates. Doing. However, the wide bridges have a lateral behavior according to the temperature, and the fingers 101f (see FIGS. 1 to 1A) interfere with each other, and the fingers 101f are subjected to the interference of futa concrete during the lateral movements. Loads may also act to provide the cause of cracking.

1 to 2 show a conventional expansion joint device for bridges, FIG. 1 is a front sectional view, FIG. 1A is a plan view of FIG. 1, and FIG. 2 is another conventional finger-type expansion and contraction made by cutting an H-beam. This is a sectional front view showing the structure of the joint device.

Referring to FIG. 1, conventional bridge expansion apparatuses are respectively installed to interlock and engage with facing ends of a divided bridge top plate, and are arranged in a finger-type top plate 101a and 101b that stretch and move according to temperature changes. And the anchor 102 for binding and fixing the upper plates 101a and 101b to the futa concrete 105, increasing the binding force between the anchor 102 and the futa concrete 105, and reinforcing the strength of the futa concrete 105. It is composed of a reinforcing bar 103 and the foreign matter and rainwater collecting rubber plate member 104 installed so that its ends are fixed to the both sides of the futa concrete 105, respectively. In FIG. 1, reference numeral 106 denotes a slab reinforcing bar inside the upper plate portion of the bridge, and 107 denotes a nut.

As shown in FIG. 4A, the conventional expansion joint apparatus for bridges having the above-described structure is anchored to the working load and the bending moment due to its own characteristics of the cantilever structure formed by the fingers 101f of the upper plates 101a and 101b. The tension force, shear force, and bending moment, which are working stresses, are concentrated on the 102 or the nut 107, resulting in a situation such as loosening of the nut 107 and cutting of the anchor 102. And this result can drop off the top plate (101a) (101b) of the expansion joint can cause serious traffic accidents on the driving vehicle. In addition, the female and male fingers 101f of the upper plates 101a and 101b have a cantilever structure, which not only affects the safety of the passing vehicle due to sagging and cutting of the fingers 101f, but also damages the durability of the bridge. Can give

In addition, in the conventional expansion joint device as shown in Figure 6a and 6b, in order to reduce the production cost, such as a single cutting of the iron plate in the shape of the finger 101f (601f), a pair is made in a symmetrical structure, cutting cost, etc. It is possible to save a single cutting bar, which allows only the stretching behavior in the traveling direction of the vehicle, and the transverse behavior at the maximum contraction, such as the finger 101f of FIG. 6A or the finger 601f of FIG. 6B. In case of unexpected external forces such as earthquake, wind power, and lateral direction depending on the temperature, the loss of function and expansion joint of the expansion joint due to transverse movement Will cause damage to the structure, such as futa concrete 105 is fixed. In fact, in the case of a large connection lamp with a large curvature of lateral displacement due to temperature, the fingers 101f and 601f facing each other because they cannot accommodate all the lateral displacement appear to interfere with each other. Due to the loss of stretching function and the second damage of the futa concrete is a situation that occurs frequently.

In addition, in the conventional expansion joint as shown in Fig. 9a, the joint surface between the futa concrete 105 and the expansion joint main body which is poured after installation of the expansion joint main body is not tightly attached, so that the vibration of the expansion joint main body when passing through the vehicle Due to the air gaps are generated in the joint surface with the futa concrete 105, rainwater or the like flows into this area, and leakage occurs in the substructure.

On the other hand, referring to Figure 2, which shows another conventional expansion joint device for the bridge, is inserted into the gap facing the divided upper plate portion (slab), and the expansion joint body main body 201 which stretches and acts according to the temperature change And an anchor 202 for fixing the expansion joint body 201 to the futa concrete 205, an increase in the binding force between the anchor 202 and the futa concrete 205, and reinforcement for strengthening the strength of the futa concrete 205. The reinforcing bar 203 and the expansion joint main body 201 are integrally formed with the expansion joint main body 201 together with the rubber plate member 204 for collecting foreign matters installed in the futa concrete 205. Reference numeral 206 denotes slab reinforcing bars inside the top plate of the bridge.

In another conventional bridge joint expansion device having the above configuration, one of the biggest causes of cracking in the futa concrete 205 is that the slab reinforcing bar 206 and the expansion joint are not firmly connected. That is, the welding state for fixing the anchor 202 and the reinforcing bar 203 is uneven, the binding line is not enough, and the expansion joint body swings due to vibration and shock when passing through the vehicle, resulting in futa concrete ( 205 cracks and breaks are generated.

In addition, the conventional conventional expansion joint device for bridges has a problem in that it cannot sufficiently cope with external forces such as earthquake, wind power, and temperature expansion due to its structural characteristics that do not allow lateral behavior.

The present invention has been made in view of the problems in the conventional expansion joint device as described above, the upper and lower coupling mechanism and the upper plate of the expansion joint is securely fixed in one integral structure together with the lower plate, the finger It is an object of the present invention to provide an expansion joint device capable of sufficiently coping with external forces such as earthquakes, wind power, and expansion by temperature by improving the structure of the finger portion of the shape plate in both longitudinal and transverse directions.

In order to achieve the above object, the expansion joint according to the first embodiment of the present invention,

It is installed so as to be interlocked with each other at both ends facing the upper part of the divided upper plate, such as a bridge or overpass, and is a structure capable of longitudinal and lateral movement against external force such as temperature change and earthquake or wind power. The bolt that connects the upper plate and the lower plate has a cantilever structure, so that the coupling part of the lower plate with the key part of the lower plate is wedge-shaped so that the coupling of the upper plate and the lower plate can be connected wedge type for load distribution. Mold tops;

It is installed in the lower part of the upper plate to support and fix the upper plate, a groove is formed on one side of the upper plate to close contact with the stepped structure of the end of the finger plate of the upper plate, the other side is in contact with the futa concrete A lower plate composed of a key portion having projections formed thereon for rainwater inflow and load distribution, and a horizontal surface portion extending perpendicularly to the key portion to support and support the upper plate;

A bolt for fixing the upper plate to the lower plate by a bolt fastening method through the upper plate and the lower plate;

An anchor bolt fixed to the futa concrete and installed vertically or inclined in a structure capable of height adjustment in accordance with site conditions under the horizontal surface portion of the lower plate; And

Its end portions are respectively provided on both horizontal surface portions of the lower plate, characterized in that it comprises a rubber plate member for collecting rainwater and foreign matter introduced into the gap of the finger portion of the upper plate.

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In addition, in order to achieve the above object, the expansion joint according to a second embodiment of the present invention,

It is installed so as to be interlocked with each other at both ends facing the upper part of the divided upper plate, such as a bridge or overpass, and is a structure capable of longitudinal and lateral movement against external force such as temperature change and earthquake or wind power. The bolt type connects the upper plate and the lower plate with the cantilever structure, so that the coupling between the upper plate and the lower plate can be connected by wedge type to distribute the load. Tops;

It is installed in the lower part of the upper plate to support and fix the upper plate, a groove is formed on one side of the body to closely contact with the stepped structure of the finger plate rear plate end of the upper plate, the other side of the body in contact with the futa concrete The lower part which consists of the key part which has the processus | protrusion in which the rainwater inflow and load distribution are formed, the horizontal surface part which extends perpendicularly to the said key part, and supports the upper plate, and the vertical surface part which extends perpendicularly to the horizontal surface part ;

A bolt for fixing the upper plate to the lower plate by a bolt fastening method through the upper plate and the lower plate;

An anchor bolt fixed to the futa concrete and installed vertically or inclined in a structure capable of height adjustment in accordance with site conditions under the horizontal surface portion of the lower plate; And

Both ends of the lower plate are vertically detachable at their ends, and are characterized in that they include a rubber plate member for collecting rainwater and foreign substances introduced into the gap of the finger portion of the upper plate.

Here, a reinforcing plate member for reinforcing the rigidity of the finger portion is further provided on the lower surface portion of the finger portion of the upper plate and the upper end portion of the vertical surface portion of the lower plate to prevent bending or cutting of the finger portion of the upper plate.

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

3 to 3b is a view showing the expansion joint according to the first embodiment of the present invention, Figure 3 is a front sectional view showing the overall structure, Figure 3a is an enlarged view showing only the main part of the expansion joint device, Figure 3b is a partial excerpt detail showing the wedge-bonded state of the upper and lower plates.

3 to 3B, the expansion joint according to the first embodiment of the present invention is a finger-type upper plate 310a (310b), lower plate 320a (320b), bolt 331, anchor bolt 340 It comprises a rubber plate member 350.

The finger-shaped top plates 310a and 310b are respectively installed to engage with each other at opposite ends of the divided top plate portions such as bridges or overpasses, and move vertically and horizontally against external forces such as temperature changes and earthquakes or wind power. As a possible structure, the upper plate 310a (310b) and the lower plate (320a, 320b) is divided into a form, and the upper plate 310a (310b) and the lower plate (320a, 320b) connecting the upper plate (331) 310a) and 310b have a cantilever structure so that all loads are concentrated on the bolts 331 so that the loads are distributed to minimize the damage of the bolts. The upper plate 310a, 310b and the lower plate 320a, 320b are The coupling portion 310k of the key portion 320k of the lower plate 320a and 320b and the coupling portion 310k of the upper plate 310a and 310b are designed and manufactured to have a wedge-shaped connection. Here, each of the fingers 310f of the top plates 310a and 310b may have a predetermined distance (a mm) in the longitudinal and lateral directions of the fingers 310f so as to allow both longitudinal and lateral movements. ) Is designed and manufactured to have as much empty space (see FIG. 7, which will be described later).

The lower plates 320a and 320b are installed under the upper plates 310a and 310b to support and fix the upper plates 310a and 310b, and one side of the upper plates 310a and 310b may have fingers 310f and 310f of the upper plates 310a and 310b. A key part having a groove for fixing and tightly fixing the stepped structure at the rear plate end, and a projection 320p for distributing rainwater and distribution of load on the other side thereof in contact with the futa concrete 360 ( 320k and a horizontal surface portion 320h extending perpendicularly to the key portion 320k to support and support the upper plates 310a and 310b.

The bolt 331 penetrates the upper plate 310a, 310b and the lower plate 320a, 320b to fix the upper plate 310a, 310b to the lower plate 320a, 320b by a bolt fastening method.

The anchor bolt 340 is fixed to the lower plate (320a) (320b) to the futa concrete (360), the height of the lower plate (320a) (320b) to the bottom of the horizontal surface portion (320h) of the height adjustable to the structure of the site to the vertical Or inclinedly installed. In this embodiment, the anchor bolt 340 is installed to be inclined. That is, when there is a need to adjust the overall height of the expansion joint according to the thickness of the concrete slab of the site or the height of the bottom of the top floor, the anchor bolt 340 is formed of a screw thread, so that the height of the anchor bolt is increased. The government washer 344 can be easily changed to the desired position, it is possible to easily adjust the overall height of the expansion joint. As described above, the length of the anchor bolt 340 is adjusted, and the washer 344 is freely movable along the body of the anchor bolt 340 in the diagonal direction along the body of the anchor bolt 340. Are fastened, and nuts 342 and 346 for fixing the position of the washer 344 are fastened before and after the washer 344, respectively. Therefore, when adjusting the length of the anchor, the nut 342, washer 344, and nut 346 are fastened from the lower end of the anchor bolt 340 in order to fix the washer 344 to an appropriate position and then to the outside. The length of the anchor bolt 340 can be easily adjusted by cutting off the remaining portion of the anchor bolt 340 remaining in the lower portion of the nut 346.

The rubber plate member 350 is provided at both ends of the lower surface 320a and 320b of the horizontal surface portion 320h, respectively, and the rainwater flows into the gap between the finger portion 310f of the upper plate 310a and 310b. Collect debris.

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Here, the expansion joint device and the conventional expansion joint device of the present invention as described above will be described once again.

6A and 6B, conventionally, the fingers 101f and 601f of the top plates 101a, 101b, 601a and 601b are symmetrical by one cutting operation in order to reduce manufacturing costs. Made of structure In this way, the cutting cost can be saved and the single cutting is carried out, which allows the expansion joint behavior only in the traveling direction of the vehicle, and there is no lateral movement margin. Accordingly, when unexpected external forces such as earthquake, wind power, and lateral direction depending on temperature are required for future longitudinal and lateral movements, futa retains the function of expansion joint and the expansion joint is fixed. It causes breakage of structures such as concrete 105.

In fact, in the case of a large connection ramp having a large bending direction displacement due to temperature, the fingers 101f and 601f of FIGS. 6A to 6B facing each other because they cannot accommodate all the transverse displacements interfere with each other. In this case, the loss of the stretching function and the damage of the futa concrete 105 which is the secondary damage are frequently generated. The concept of expansion joints up to now has not felt the necessity of lateral behavior, but it has become necessary for expansion joints capable of lateral movement due to earthquakes and wind power. Accordingly, the present invention proposes a expansion joint structure that allows longitudinal and lateral behavior.

That is, as shown in FIG. 7, each of the fingers 310f of the top plates 310a and 310b has a space in the longitudinal direction of the fingers 310f for a predetermined interval so as to be able to move in the longitudinal direction and the transverse direction. It is designed and manufactured to have an empty space as much as the allowable transverse displacement in consideration of earthquake and wind power, according to the predetermined distance ('a' mm or more) or bridge type in the lateral direction with respect to the longitudinal direction. It is produced. It appears that there is no space in the longitudinal direction in Fig. 7 because each of the fingers 310f of the upper plates 310a and 310b shows the state in which the maximum contraction is made in the longitudinal direction (vehicle traveling direction). It is designed and manufactured to allow the amount of expansion and contraction by the longitudinal length interval of the finger 101f also in the longitudinal direction.

Here, such a longitudinal and lateral behavior is not limited to the shape of the finger portion shown in FIG. 7 but can be applied to various types of finger portions as shown in FIGS. 8A to 8C. In Fig. 8B, 310s represents a toothed portion, and in Fig. 8C, 310w represents a wave portion.

In addition, as shown in FIG. 4A, the conventional expansion joint device for bridges may include the anchor 102 or the nut with respect to the working load and the bending moment due to its own characteristics of the cantilever structure formed by the fingers 101f of the upper plate 101b. The tension force, shear force, and bending moment, which are acting stresses, are concentrated and act on the part 107, which causes a situation such as loosening of the nut 107 and cutting of the anchor 102. And these results have caused the top plate of the expansion joint to drop off causing serious traffic accidents on the driving vehicle. In view of the fact that the concentrated load acts on the anchor 102 or the nut 107, the top plates 310a and 310b are not subjected to the concentrated load as in the anchor 102 of FIG. As shown in FIG. 3B, a stepped key portion 310k is formed on the back plate of the finger portions of the upper plate 310a and 310b so that the coupling of the upper plate and the lower plate can be connected to the lower plate, and the lower plate 320a and 320b correspond to each other. If the site is provided with a key portion 320k formed with a groove for tightly fixing the stepped key portion 310k of the upper plate 310a, 310b, all the concentrated load received by the conventional anchor 102 is shown in Figure 4b. As shown, the stepped key portion 310k and the bottom plate grooved key are connected in the longitudinal direction of the expansion joint with stress tensile force, resistance moment, and shear resistance in the grooved key portion 320k of the lower plate 320a, 320b. Since it is received at 320k, the conventional bolt 331 or anchor 102 is resistant to the concentrated load. Yieoteuna concept, the bolt 331 of the present invention is a concept for fastening the top plate (310a), (310b) and the lower panel (320a) (320b).

There are various leak causes in the conventional expansion joints, and one of them is not in close contact with the connection portion between the expansion joint and the futa concrete 105 as shown in FIG. In the present invention to compensate for this, as shown in Figure 9b, the projection 320p is formed to increase the adhesive strength in anticipation of the load distribution effect on the back of the key portion (320k) of the lower plate (320a, 320b). By installing the projection 320p, it effectively responds to the leakage prevention, distributes the stress received from the key portion 320k to the anchor bolt 340, and partially transmits it to the futa concrete 360 through the projection 320p.

In addition, cracks frequently occur in the futa concrete 360 between the key portion 320k of the lower plates 320a and 320b and the slab concrete 390 as described above. When the expansion joints are repaired, the vehicle passes in a state in which the vehicle passes and is not sufficiently cured when the futa concrete 360 is placed for 2 to 3 hours, a crack occurs in the futa concrete 360, and rainwater is introduced. In order to protect the futa concrete 360, a high-strength steel sheet member or FRP plate or high-strength pre-cast concrete member 380 is installed between the key portion 320k of the lower plate and the slab concrete 390 to protect the concrete. do. At this time, irregularities are installed to improve adhesion between the futa concrete 360 and the high strength iron plate member or FRP plate for protecting the futa concrete, and the high strength pre-cast concrete member 380.

On the other hand, Figures 5a to 5d is a view showing the various embodiments of the step portion of the step structure of the upper plate and the key portion of the lower plate in the expansion joint according to the first embodiment of the present invention.

First, in the upper plate 310a and 310b, the shape of the finger portion rear plate end 310k coupled to the lower plate 320a and 320b in a concave-convex (or wedge) shape is as shown in FIGS. 5A and 5B. The lower half protrudes, and the center has a concave groove of the concave shape as shown in FIG. 5C, or the concave groove and the cover are combined as shown in FIG. 5D. It may be formed in the form.

In addition, in the lower plates 320a and 320b, in order to improve adhesion to the futa concrete 360 or the high strength iron plate member (or high strength concrete member) 380 for protecting the futa concrete, the load is received from the key member. The outer shape of the key portion 320k of the lower plates 320a and 320b is formed in a coupling form of a yaw shape and an iron shape as shown in FIGS. 5A to 5D.

10A to 10D illustrate a expansion joint according to a second embodiment of the present invention, and FIG. 10A is a front sectional view showing an overall structure as a state of being installed in expansion joints such as bridges or overpasses, and FIG. Figure 10c is a cross-sectional view showing the structure of Figure 10c is a cross-sectional view showing a state in which the rubber plate member detachably installed, Figure 10d is a view showing a coupling relationship of the rubber plate member, the roller wheel and the guide rail member.

Referring to FIG. 10A, the expansion joint according to the second embodiment of the present invention is similar to the first embodiment of the finger type upper plate 1010a, 1010b, lower plate 1020a, 1020b, bolt 1031, and anchor bolt ( 1040 and a rubber plate member 1050 are basically provided.

The finger-shaped top plates 1010a and 1010b are installed so as to be engaged with each other at opposite ends of the divided top plates, such as bridges or overpasses, in longitudinal and transverse directions against temperature changes and external forces such as earthquakes or wind power. Designed and manufactured to allow for behavior. In FIG. 10A, reference numeral 1003 denotes reinforcement steel, 1006 denotes slab reinforcement, and 1090 denotes slab concrete.

As shown in FIG. 10B, the lower plates 1020a and 1020b are installed under the upper plates 1010a and 1010b to support and fix the upper plates 1010a and 1010b, and the upper plates 1010a and 1010b. A key portion 1020k for tightly fixing the rear plate end portion of the rear plate, a horizontal surface portion 1020h extending to the key portion of the key portion 1020k and supporting the upper plates 1010a and 1010b, and a right angle to the horizontal surface portion 1020h. It consists of a vertical surface portion 1020v formed to extend.

Here, preferably, the fingers of the upper plates 1010a and 1010b over the lower surface portions of the fingers 1010f of the upper plates 1010a and 1010b and the upper ends of the vertical surface portions 1020v of the lower plates 1020a and 1020b. A reinforcement plate member 1070 is further provided to reinforce the rigidity of the finger part to prevent the bending of the part or the cutting of the part. Such a reinforcement plate member 1070 may be used a haunch triangular stiffener plate. The haunch triangular stiffener plate 1070 is provided by welding to the lower surface portion of the finger portion of the upper plate 1010a and 1010b and the vertical surface portion 1020v of the lower plate 1020a and 1020b, respectively. As shown in Figure 10a, the upper plate (1010a) (1010b) occurs because of the characteristic of the cantilever type of the finger-shaped top plate is cut without resisting the lubrication load acting on the vehicle, the load of the top plate is a triangular plate 1070 The load applied to the stiffener plate and the load acting on the triangular stiffener plate are transmitted to the vertical surface portions 1020v of the lower plates 1020a and 1020b to prevent the upper plates 1010a and 1010b from being cut or sag.

The bolt 1031 is fastened through the upper plates 1010a, 1010b and the lower plates 1020a, 1020b to couple and fix the upper plates 1010a, 1010b to the lower plates 1020a, 1020b.

The anchor bolt 1040 is fixed to the lower plate (1020a) (1020b) to the futa concrete (1060), the height of the lower plate (1020a) (1020b) in the structure of the height can be adjusted in accordance with the site conditions to the vertical or inclined structure Is installed. In this embodiment, it is shown that the case is installed obliquely.

The rubber plate member 1050 is detachably installed at both ends of the lower surface portions 1020a and 1020b of the lower surface portions 1020v, respectively. The rainwater flows into the gap between the finger portions of the upper plates 1010a and 1010b. To collect foreign matter. Here, as shown in FIG. 10C to detachably install the rubber plate member 1050, a plurality of roller wheels 1052 are installed at both ends of the rubber plate member 1050 along the edge of the end portion, and the lower plate. Both vertical surface portions 1020v of 1020a and 1020b are provided with guide rail members 1054 that enable fixing and rolling movement of the roller-type wheels 1052.

10D is a view showing in detail the coupling relationship between the rubber plate member 1050, the roller wheel 1052 and the guide rail member 1054 as described above.

As shown in FIG. 10D, a plurality of roller-type wheels 1052 fixed by the wheel fixing member 1052g are installed side by side along the edge of the rubber plate member 1050 at both upper ends of the rubber plate member 1050. In such a state, the roller wheel 1052 is detachably installed between the two vertical ends 1020v of the lower plates 1020a and 1020b via the guide rail member 1054. In FIG. 10D, reference numeral 1055 denotes a coupling coupling connecting the guide rail members 1054 to each other.

As described above, the expansion joint according to the present invention is the coupling mechanism between the upper and lower plates of the expansion joint device of the bolts and nuts disclosed in its patent application Utility Model Registration 0184726-29 and Patent Registration No. 0399277 While inheriting the coupling concept as it is, the upper plate can be more stably fixed by improving the shape of the lower plate key portion fixing the upper plate to the lower plate.

In addition, by designing and manufacturing the structure of the finger portion (projection portion) of the finger-shaped upper plate in the longitudinal and transverse direction, there is an advantage that can sufficiently cope with external forces such as earthquake and wind power.

In addition, in the case of the second embodiment of the present invention, by improving the structure of the rubber plate member for rainwater and foreign matter collection independently of the expansion joint body, the problem of traffic congestion and rapid replacement of the damaged rubber plate member is made There is an advantage that can fundamentally solve the problem of secondary damage to the lower structure due to the lack of support.

Claims (13)

It is installed so as to be interlocked with each other at both ends facing the upper part of the divided upper plate, such as a bridge or overpass, and is a structure capable of longitudinal and lateral movement against external force such as temperature change and earthquake or wind power. The bolt that connects the upper plate and the lower plate has a cantilever structure, so that the coupling part of the lower plate with the key part of the lower plate is wedge-shaped so that the coupling of the upper plate and the lower plate can be connected wedge type for load distribution. Shape plates 310a and 310b; It is installed in the lower part of the upper plate to support and fix the upper plate, the groove is formed on one side of the upper part of the finger plate of the upper plate to closely contact with the stepped structure, the other side is in contact with the futa concrete A lower plate (320a) (320b) formed of a key portion (320k) having projections for rainwater inflow and load distribution, and a horizontal surface portion (320h) extending perpendicularly to the key portion to support and support the upper plate; A bolt 331 penetrating the upper plate and the lower plate to fix the upper plate to the lower plate by a bolt fastening method; An anchor bolt 340 fixed to the futa concrete and installed vertically or inclined in a structure capable of height adjustment in accordance with site conditions under the horizontal surface portion of the lower plate; And End portions are respectively provided on both horizontal surfaces of the lower plate, and the expansion joint device comprising a rubber plate member (350) for collecting rainwater and foreign substances introduced into the gap of the finger portion of the upper plate. The method of claim 1, Each of the fingers 310f of the upper plates 310a and 310b has a predetermined distance (a mm) in the longitudinal and lateral directions of the fingers 310f so as to enable both longitudinal and transverse directions. Expansion joint device, characterized in that designed and manufactured to have an empty space. The method of claim 1, Wedge type coupling end (finger portion rear plate end) (310k) of the upper plate (310a) (310b) and the lower plate (320a) (320b) of the expansion joint, characterized in that formed in the form of the lower half protruding. The method of claim 1, The shape of the wedge-shaped coupling end (finger portion rear plate end) 310k of the upper plates 310a and 310b with the lower plates 320a and 320b is formed in the form of a central concave groove. Expansion joint device characterized in that. The method of claim 1, The wedge-shaped coupling end (finger portion rear plate end) 310k of the upper plate 310a and 310b with the lower plate 320a and 320b has a shape in which a concave groove and a cover of a yaw type are combined. Expansion joint device characterized in that formed as. The method of claim 1, The outer shape of the key portion (320k) of the lower plate (320a) (320b) is an expansion joint device, characterized in that formed in the form of a combination of yaw type and iron type. The method of claim 1, The anchor bolt 340 is to adjust the length of the anchor bolt 340 and to solidify the coupling with the futa concrete 360, along the body of the anchor bolt 340 is freely movable up and down the washer ( 344 is fastened, and the front and rear of the washer 344, the expansion joint device characterized in that the nut 342, 346 for fastening the position of the washer 344 is fastened respectively. delete The method of claim 1, Stretching between the key portion 320k and the slab concrete 390 of the lower plate (320a, 320b) and the high-strength steel sheet member or high-strength concrete member 380 for protection of the futa concrete 360 is further installed Joints. It is installed so as to be interlocked with each other at both ends facing the upper part of the divided upper plate, such as a bridge or overpass, and is a structure capable of longitudinal and lateral movement against external force such as temperature change and earthquake or wind power. The bolt type connects the upper plate and the lower plate with the cantilever structure, so that the coupling between the upper plate and the lower plate can be connected by wedge type to distribute the load. Top plates 1010a and 1010b; It is installed in the lower part of the upper plate to support and fix the upper plate, a groove is formed on one side of the body to closely contact with the stepped structure of the finger plate rear plate end of the upper plate, the other side of the body in contact with the futa concrete Key portion 1020k having projections for rainwater inflow and load distribution at the portion to be made, a horizontal surface portion 1020h extending perpendicularly to the key portion to support the upper plate, and extending vertically to the horizontal surface portion Lower plates 1020a and 1020b composed of vertical surface portions 1020v; A bolt 1031 penetrating the upper plate and the lower plate to fix the upper plate to the lower plate by a bolt fastening method; An anchor bolt 1040 fixed to the futa concrete and installed vertically or inclined in a structure capable of height adjustment under the horizontal surface portion of the lower plate according to site conditions; And End portions are detachably installed at both sides of the lower surface of the lower plate, and the expansion joint device comprising a rubber plate member (1050) for collecting rainwater and foreign substances introduced into the gap of the finger portion of the upper plate. The method of claim 10, Prevention of bending or cutting of the finger portions of the upper plates 1010a and 1010b over the lower end portions of the finger portions of the upper plates 1010a and 1010b and the upper end portions of the vertical surface portions 1020v of the lower plates 1020a and 1020b. And a reinforcing plate member 1070 for reinforcing the rigidity of the finger part. The method of claim 11, The reinforcing plate member (1070) is a expansion joint device, characterized in that the (hunch) triangular stiffener plate (stiffener) plate. The method of claim 10, In order to detachably install the rubber plate member 1050, a plurality of roller wheels 1052 are installed at both ends of the rubber plate member 1050 along the edge of the end, and both vertical surfaces of the lower plates 1020a and 1020b. Expansion joint device (1020v) is characterized in that the guide rail member (1054) is installed to enable the fixed and rolling movement of the roller wheel (1052).

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