KR101415335B1 - Disk type elastomeric bearings - Google Patents

Abstract

Disclosed is a disk type elastic bearing. The disk type elastic bearing of the present invention comprises an upper plate which is fixed to the upper part of a bridge and has a slanted flow hole on the center; a lower plate which is fixed on a pier of the bridge and has a flow hole corresponding to the flow hole of the upper plate; an elastic disk which has an installation hole on the center and is installed between the upper and lower plates; and a negative reaction combining unit which is installed by passing through the flow holes and the installation hole and combines the upper and lower plates with the elastic disk therebetween. The negative reaction combining unit is composed of a shear key member which has screw threads on both areas except a center part positioned at the installation hole and is installed by passing through each flow hole and the installation hole such that the center part is positioned at the installation hole; and negative reaction nuts each of which has a circular arc-shaped curved part on one side of the end part corresponding to the slanted inner side of each flow hole and is fastened with each screw thread of the shear key member in each flow hole such that the negative reaction nuts are in point-contact with or in line-contact with the inner side of each flow hole. According to the present invention, negative reaction resistance can be generated when the upper and lower plates vertically move and rotate, and the upper and lower plates smoothly perform vertical movement and rotation in an allowable range since the circular arc-shaped curved parts are formed in the negative reaction nuts to make the negative reaction nuts be in point-contact with or in a line-contact with the inner side of each flow hole, thereby maintaining the negative reaction resistance.

Description

Disk type elastic bearing {DISK TYPE ELASTOMERIC BEARINGS}

More particularly, the present invention relates to a disk type elastic bearing which is capable of preventing breakage of an elastic disk while having a negative rebound structure and capable of smoothly moving the shear pin The present invention relates to a disk type elastic support which can be made.

Generally, bridges are installed on a plurality of bridge bridges or alternations, which constitute roads, railways, sidewalks, etc., and bridges between the bridge bridges and bridges or alternations are provided with bridges for transferring loads by bridges do.

The bridge supports absorbs the deformation caused by the temperature change of the bridge top plate and the deformation due to the impact and transfers it to the piers or alternately by transmitting the load of the bridge top plate alternately or alternately.

On the other hand, according to the railway design standard established by the Ministry of Construction and Transportation, the bridge support is specified to be designed for the generation of negative reaction force. The Up-Lifting Force acts on the bridge due to external factors such as the earthquake and overturning of the train. If it can not control it properly, Is a very important issue linked to many human casualties.

In addition, even if the calculation reaction force does not act, it should be constructed so as to resist the negative reaction force (upward force) of 10% of the fixed load reaction force.

However, in the design of railway bridges, disc type bridge supports are not prepared for the negative reaction force. Therefore, instead of using the resilient supports which are recognized as excellent in durability, workability and economy, a steel bearing made of cast iron ) Is used.

The above-mentioned disk type elastic support absorbs the impact of the upper load by the elastic disk formed between the upper plate and the lower plate to reduce the reaction force of the support and reduce the fatigue damage of the connection plate. It is more advantageous than constructing with other bridge supports such as steel supports. Furthermore, since the disk type elastic bearing is less expensive than the steel bearing in terms of cost, it has a merit that the construction cost can be greatly reduced.

Therefore, a technique for a disk type elastic bearing having a negative-reaction force control structure for applying a disk-type elastic bearing to a railway bridge, which is advantageous in many respects compared to a steel bearing, has been disclosed.

As a prior art, a disk type bridge support is disclosed in Korean Patent Registration No. 10-1161173 (Published on July 02, 2012). The disk type bridge support is provided with a disk for receiving a vertical load, a rotational force, and a horizontal force between the lower and upper structures provided at the bridge and the lower and upper answers, And a shear key that receives the load, the rotational force, and the horizontal force generated from the structure.

That is, as shown in FIG. 1, in the disk type bridge support, the active groove 212 (222) having a shape corresponding to the head shape of the flat head bolt is formed in each of the up and down answers 210 and 220 And an arm shear key nut 234 including fastening bolts 232 and 235 in the form of flat head bolts are formed in the shear key holes 211 and 221, A nut hole 236 is formed in the arm shear key nut 234 so that the shear key 230 can be engaged with the male shear key bolt 231. A nut hole 236 is formed in the male shear key bolt 231, And a bolt 233 fastened to the bolt 233 is formed.

However, such a disk type bridge support has the following problems.

First, the shear key is composed of the arm shear-key nut and the male shear-key bolt, and the hook portion is formed in a flat head shape, so that the shear key is closely attached to the inclined motion groove, .

Second, when the shear key contacts the connecting portion between the arm shear-key nut and the male shear-key bolt and the inner circumferential surface of the disk and the edge portion of the shear-key hole of the reverse and the reverse is in contact with the disk, .

Third, the connection between the arm shear-key nut and the male shear-key bolt has a cross-sectional loss at the central part of the shear key, and the horizontal shear bolt can be broken when the horizontal force is applied.

Korean Registered Patent No. 10-1161173 (Notification Date: July 02, 2012)

It is an object of the present invention to provide a disk type elastic support which can prevent the elastic disk from being damaged by the front end key or the edge of the upper and lower plates at the same time as the disk type elastic support is repeatedly repeated, So that the vertical and rotational movements can be smoothly performed.

Another object of the present invention is to provide an apparatus capable of increasing the horizontal force resistance by integrating the shear keys with a single member.

According to the present invention, there is provided a bridge structure comprising: an upper plate fixed to an upper plate of a bridge and having a wide upper portion and a lower narrower inclined lower portion; An elastic disk provided between the upper plate and the lower plate and having a mounting hole formed at the center thereof, and an elastic disk provided so as to penetrate each of the flow holes and the mounting hole, Wherein the sub-reaction force combining means includes threads formed on both regions except the intermediate portion located in the installation hole, and the intermediate portion is formed in each of the flow holes, A shear key member installed through the installation hole; And an arcuate curved portion is formed at one end of each of the flow holes corresponding to an inclined inner surface of the flow hole, And each of the sub-reaction force nuts fastened to the respective threads of the disk type elastic support.

According to another aspect of the present invention, there is provided a bridge structure comprising: an upper plate fixed to an upper plate of a bridge; a synthetic resin plate disposed on a lower surface of the upper plate; a coupling hole formed at a center of the lower plate; And a lower plate fixed to the pier, wherein the upper plate is coupled to the bottom plate with the synthetic resin plate interposed therebetween, a lower plate corresponding to the lower plate, An elastic disk formed between the intermediate plate and the lower plate and having a mounting hole formed thereon and an elastic disk provided between the intermediate plate and the lower plate and coupled to the fastening hole through the flow hole and the mounting hole to couple the intermediate plate and the lower plate, Wherein the sub-reaction force combining means includes threads formed in both regions except the intermediate portion located in the installation hole, A front-end key member having one thread passing through the flow hole and the installation hole and being fastened to the fastening hole so as to be positioned in the additional installation hole; And an arc-shaped curved portion formed at one end portion corresponding to the inclined inner surface of the flow hole, wherein the other threaded portion of the shear-keying member inside the flow hole is brought into point contact or line contact with the inner surface of the flow hole, And a sub-reaction force nut fastened to the disc-type elastic support.

Wherein an inner diameter of the mounting hole is provided with a cylindrical protective member so that the inner circumferential surface of the mounting hole of the elastic disk is not damaged by the edge of the flow hole when the upper and lower plates are in motion, And the lower end of the lower plate may be supported on the upper surface of the lower plate around the flow hole of the lower plate.

Wherein an inner diameter of the mounting hole is provided with a cylindrical protective member so that the inner circumferential surface of the mounting hole of the elastic disk is not damaged by the edge of the through hole and the fastening hole when the upper and lower plates are in motion, And the lower end portion may be supported on the upper surface of the lower plate around the flow hole of the lower plate.

The protection member may be made of a metal material or a synthetic resin material.

The protection member is divided into upper and lower members so that the upper region and the lower region can move independently of each other when the upper and lower plates are moving, and an elastic body having self-elasticity and stretchability is provided between the upper and lower members .

The elastic body may be integrated with the upper and lower members, or may be independently installed between the upper and lower members.

According to the present invention, since the upper and lower plates of the disk-type bridge elastic support are coupled by the sub-reaction force combining means including the shear-key member having the threads formed at both ends thereof and the sub-reaction force nut fastened to each thread of the shear key member, And an arc-shaped curved portion is formed in the sub-reaction force nut, so that the upper and lower plates smoothly behave in an allowable range by making point contact or line contact with the inner surface of each flow hole. It is possible to provide the effect of maintaining the negative reaction force resistance.

1 is a cross-sectional view showing a conventional disk type elastic bearing.
2 is an exploded perspective view showing a disc type elastic support according to a first embodiment of the present invention.
3 is a cross-sectional view of the disk type elastic support shown in FIG.
4 is an exploded perspective view showing a disc type elastic support according to a second embodiment of the present invention.
FIG. 5 is a perspective view of the coupled state of the disk type elastic bearing shown in FIG. 4. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

FIG. 2 is an exploded perspective view illustrating a disc type elastic support according to a first embodiment of the present invention, and FIG. 3 is a sectional view of the disc type elastic support shown in FIG. 2 in an engaged state.

2 to 3, the disk-type elastic bearing includes an upper plate 10 fixed to the upper plate of the bridge and having inclined flow holes 12 at the center thereof, a lower plate 10 fixed to the bridge, An elastic disk 30 provided between the upper and lower plates 10 and 20 and having a mounting hole 32 formed at the center thereof and a lower plate 20 having a flow hole 22 corresponding to the flow hole 12 of the upper plate 10, And auxiliary reaction force combining means 40 installed through the respective flow holes 12 and 22 and the installation hole 32 to couple the upper and lower plates 10 and 20 with the elastic disk 30 interposed therebetween .

This will be described more specifically.

The top plate 10 is fixedly coupled to the top plate of the bridge, and the anchors are coupled to the top corner area. At the center, a flow hole (12) having an upwardly projecting structure is formed. Such a flow hole 12 is formed in an inverted conical shape, that is, an oblique shape in which the upper side is wide and the lower side is a narrow oblique contraction shape.

The lower plate 20 is fixedly coupled to the pier, and anchors are provided in the bottom corner area. At the center, a flow hole 22 having a shape opposite to the flow hole 12 of the top plate 10 is formed. That is, the flow holes 12 having a conical shape (narrow on the top and inclined in the shape of the broad-side downward light) are formed to be symmetrical with the flow holes 12 of the top plate 10.

The elastic disk 30 is installed between the top plate 10 and the bottom plate 20 and is formed in a disk shape and an installation hole 32 is formed at the center thereof.

At this time, the inner diameter of the installation hole 32 is formed to be larger than the inner diameter of each of the flow holes 12 and 22. Here, the inner diameters of the respective flow holes 12, 22 mean the inner peripheral surfaces of the respective regions except for the inclined inner peripheral surfaces of the respective flow holes 12, 22.

The engaging means 50 engages the upper plate 10 and the lower plate 20 with the elastic disk 30 interposed between the flow holes 12 and 22 and the mounting hole 32, 42 and 42B are formed in both regions except for the intermediate portion 42C located at the center portion 42 and the intermediate portion 42C is positioned at the installation hole 32. In addition, Arc-shaped curved portions 44A and 44B are provided at one ends of the shear-key member 42 corresponding to the inclined inner surfaces 12A and 22A of the respective flow holes 12 and 22, And the respective threads 42A and 42B of the shear key member 42 in the respective flow holes 12 and 22 are formed so as to be in point contact or line contact with the inner side surfaces 12A and 22A of the respective flow holes 12 and 22. [ And 42B, respectively. As shown in FIG. The curved portions 44A and 44B of the sub-reaction force nut 44 described above are for maintaining the negative reaction resistance while permitting the rotational behavior of the top plate 10 and the bottom plate 20 when the elastic support rotates. That is, the upper plate 10 and the lower plate 20 can be smoothly rotated or rotated.

On the other hand, the inner surface of the mounting hole 32 of the elastic disk 30 is pressed against the edges 12A, 12B of the flow holes 12, 22 by the rotational motion of the upper and lower plates 10, 22B so as not to be damaged. That is, the protective member 50 serves to prevent the edges 12A and 22B of the flow holes 12 and 22 from coming into contact with the inner diameter of the installation hole 32.

The upper end of the protective member 50 is supported on the lower surface of the upper plate 10 around the flow hole 12 of the upper plate 10 and the lower end of the protective member 50 is supported on the upper surface of the lower plate 20, 22). The inner diameter of the installation hole 32 is larger than the inner diameter of each of the flow holes 12 and 22 and is larger than the outer diameter of the shear key member 42. Therefore, A space is formed between the outer diameters. A protective member 50 is provided in the space, the upper end thereof is supported on the bottom surface of the upper plate 10, and the lower end is supported on the upper surface of the lower plate 20.

Meanwhile, the protection member 50 may be made of a metal material or a synthetic resin material. The protective member 50 can move independently of the upper and lower regions when the upper and lower plates 10 and 20 are rotated or horizontally moved. In order to prevent the protection member 50 from being damaged, (52, 54). This is because, when they are integrally formed, the behavior of the upper and lower plates 10 and 20 may be restricted or interfered with the behavior. 3, when the elastic disk 30 is compressed or the elastic disk 30 is deformed due to the rotational motion, the protective member 50 is inserted into the upper plate 10 or the lower plate 20 So that damage to the elastic disk 30 can be prevented without interfering with it. To this end, an elastic body 56 having self-elasticity and stretchability is provided between the upper and lower members 52, Such an elastic body 56 prevents the upper member 52 and the lower member 54 from friction with each other during the vertical and rotational movements of the upper and lower plates 10 and 20, 52 and the lower member 54 can be adjusted.

That is, as the elastic body 56 is deformed, the gap between the upper member 52 and the lower member 54 is adjusted in the vertical and rotational motion of the upper and lower plates 10 and 20.

The elastic members 56 may be integrated with the upper and lower members 52 and 54, or independently installed between the upper and lower members. In this embodiment, the description will be made on the basis that the upper and lower members 52 and 54 are provided independently.

The operation of the present invention configured as above will be described.

The upper plate 10 and the lower plate 20 are coupled to each other with the elastic disk 30 interposed therebetween by the engaging means 40 so that various factors (loads) 10 and 20, the upper and lower plates 10 and 20 behave horizontally, vertically, or rotate within a range allowed by the elastic disk 30.

Particularly, since the shear key member 42 penetrates through the flow holes 12 and 22 of the upper and lower plates 10 and 20 and the sub-reaction force nut 44 is fastened in the flow holes 12 and 22 The upper and lower plates 10 and 20 receive the negative reaction force resistance, and the negative reaction force control becomes possible.

Since the arc-shaped bent portions 44A and 44B are formed in the respective sub-reaction force nuts 44, they are in point contact or line contact with the inner surfaces 12A and 12B of the respective flow holes 12 and 22, (10, 20) can be smoothly performed within the allowable range.

Since the cylindrical protecting member 50 having an inner diameter larger than that of each of the flow holes 12 and 22 is provided between the installation hole 32 and the shear key member 42, The sharp edges 12B and 22B of each of the flow holes 12 and 22 are prevented from interfering with the inner surface of the installation hole 32 to prevent the installation hole 32 from being damaged.

That is, a cylindrical protective member 50 is provided between the inner diameter of the installation hole 32 and the outer diameter of the shear-key member 42 so that the edges 12B and 22B are not in contact with the inner surface of the installation hole 32 The damage of the elastic disk 30 can be prevented.

The protection member 50 is formed by dividing the upper member 52 and the lower member 54 and the elastic member 56 is provided between the upper member 52 and the lower member 54, 10 and 20, the elastic disk 30 can be smoothly deformed within an allowable range, the protective member 50 is not damaged, and the interference when the elastic disk 30 is deformed It will not cause it.

FIG. 4 is an exploded perspective view illustrating a disc type elastic support according to a second embodiment of the present invention, and FIG. 5 is a perspective view illustrating an assembled state of the disc type elastic support shown in FIG.

4 and 5, the second embodiment according to the present invention is the same as the above-described embodiment except that the disk type elastic support is configured as a one-way movable type. That is, the intermediate plate 14 and the synthetic resin plate 16 are provided between the top plate 10 and the elastic disk 30 and the upper end thread 42B of the shear key member 42 is engaged with the bottom surface of the intermediate plate 14 And the fastening hole 14A formed in the fastening hole 14A.

At this time, a sub-reaction force wedge 18 for controlling the intermediate plate 14 to behave only in one direction and having a negative reaction force resistance is provided at both side edges of the bottom surface of the top plate 10.

5, the vertical upper end is bolted to the bottom surface of the upper plate 10, and the lower horizontal end is connected to the bottom edge of the middle plate 14 Respectively. Therefore, the intermediate plate 14 is coupled with the lower plate 20 by the engaging means 40 only in one direction, and is also subjected to negative reaction resistance.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

10: upper plate 12, 22:
12A, 22A: inner side 12B, 22B: edge
14: intermediate plate 16: synthetic resin plate
18: sub reaction force wedge 20: bottom plate
30: elastic disc 32: installation hole
40: engaging means 42: shear key member
42A, 42B: thread 42C: middle part
44: sub-reaction force nut 44A, 44B:
50: protective member 52: upper member
54: lower member 56: elastic body

Claims (7)

An upper plate fixed to the upper plate of the bridge and having a wide upper portion and a lower lower portion inclined to a narrow shape at the center, and a flow hole fixed to the pier and narrowed in the upper and lower portions to correspond to the flow holes of the upper plate An elastic disk provided between the upper plate and the lower plate and having a mounting hole formed at the center thereof; and a sub-reaction force coupling unit which is installed through the flow holes and the mounting hole, Means,
Wherein the sub-
A shear member formed on both sides except the intermediate part located in the installation hole and penetrating the respective flow holes and the installation hole such that the intermediate part is positioned in the installation hole; And
Wherein each of the flow holes has an arcuate curved portion formed at one end thereof corresponding to an inclined inner surface of each of the flow holes, And each of the sub-reaction force nuts fastened to each of the threads.
Disc type elastic bearing. A synthetic resin plate disposed on a bottom surface of the upper plate, a fastening hole formed in a central portion of the bottom surface, and acting only in one direction by a negative reaction force wedge, An intermediate plate coupled to a bottom surface of the plate; a lower plate corresponding to the fastening hole, the upper plate being narrow and the downwardly inclined to a wide shape and being fixed to the pier, and a mounting hole formed at the center, And a sub-reaction force coupling means which penetrates through the flow hole and the installation hole and is coupled to the coupling hole to couple the intermediate plate and the lower plate with the elastic disk interposed therebetween,
Wherein the sub-
A shear key member in which threads are formed in both areas except the intermediate part located in the installation hole and one thread is passed through the through hole and the installation hole so that the intermediate part is positioned in the installation hole; And
Wherein an arc-shaped curved portion is formed at one end portion corresponding to an inclined inner surface of the flow hole, and an arc-shaped curved portion is formed on the other thread of the shear-key member inside the flow hole so as to be in point contact or line contact with the inner surface of the flow hole And a sub-reaction force nut to be fastened.
Disc type elastic bearing. The method according to claim 1,
In the inner diameter of the installation hole,
Wherein a cylindrical protective member is provided to prevent the inner circumferential surface of the mounting hole of the elastic disk from being damaged by the edge of the flow hole when the upper and lower plates are in motion,
Wherein an upper end portion of the protection member is supported at a periphery of the flow hole of the upper plate at a bottom surface of the upper plate and a lower end portion is supported at a periphery of a flow hole of the lower plate at an upper surface of the lower plate.
Disc type elastic bearing. 3. The method of claim 2,
In the inner diameter of the installation hole,
Wherein a cylindrical protective member is provided on an inner circumferential surface of the mounting hole of the elastic disk so as not to be damaged at the edge of the through hole and the through hole when the upper and lower plates are in motion,
Wherein an upper end portion of the protection member is supported on the periphery of the fastening hole at the bottom surface of the intermediate plate and a lower end portion is supported around the flow hole of the lower plate at an upper surface of the lower plate.
Disc type elastic bearing. The method according to claim 3 or 4,
Wherein,
Characterized in that it is made of a metal material or a synthetic resin material.
Disc type elastic bearing. 6. The method of claim 5,
Wherein,
Wherein the upper and lower regions are divided into upper and lower members so that the upper region and the lower region move independently of each other when the upper and lower plates are moving,
Characterized in that an elastic body having self-elasticity and stretchability is provided between the upper and lower members,
Disc type elastic bearing. The method according to claim 6,
Wherein the elastic body is integrally joined to the upper and lower members or is independently provided between the upper and lower members.
Disc type elastic bearing.

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