KR200250541Y1 - Pot bearing combined with spring damper device - Google Patents

Abstract

The present invention relates to a port support coupled to the spring damper device (spring damper device), the upper and lower plates respectively inserted by a plurality of anchor bolts embedded in the upper plate and the pier side, the rubber plate inserted into the inner groove of the lower plate In the port support comprising a sealing ring, an intermediate plate, a sliding plate and a fluorine resin plate, the fixing plate is attached to the lower portion of the lower plate by the anchor bolt, the square projection on both sides of the upper plate facing each other And a fixing block is bolted to the upper plate, and a spring damper device having a cylinder and a piston head at both ends between the fixing block, the fixing plate and the upper plate, respectively. It is characterized by being fixed to the fixed plate, it is difficult to install and maintain than when compared to the conventional port support As well as defects, it is possible to reliably restrain the lateral behavior by suppressing the initial pressure at all times, and reduce the seismic force by non-linear hysteretic behavior even during an earthquake, and effectively accommodate the movement in both directions in the event of a load. Seismic performance is greatly improved.

Description

POT BEARING COMBINED WITH SPRING DAMPER DEVICE}

The present invention relates to a port support to which a spring damper device (hereinafter referred to as) is coupled, and more specifically, to solve the installation and maintenance difficulties than the conventional port support, as well as the support at all times In the horizontal direction, the initial pressure can be suppressed to reliably constrain the lateral behavior, and even during an earthquake, nonlinear hysteretic behavior can reduce the seismic force. It also relates to a port bearing combined with an improved spring damper device.

In general, the bridge support is a connecting device that is used in the bridge so that the upper plate of the upper structure is seated on the pier or the alternating structure of the lower structure, and transfers and supports the load applied to the upper plate to the lower structure, and allows the expansion and rotation of the upper structure. It is installed to prevent damage of the upper structure, and various forms such as pot bearing type and elastic bearing type have been developed and applied. Among the bridge bearings, the port bearing type is particularly capable of supporting a vertical load. It is excellent in its ability to adapt to constant temperature shifts and stretching behaviors and is therefore preferred in heavy load bridges.

1 is an exploded perspective view of a conventional pot support. As shown in the drawing, the conventional base support has a rectangular upper and lower plates 4 and 5 respectively inserted by anchor bolts embedded in a plurality of upper plates and piers, and rubber plates inserted into the inner recesses of the lower plate 5. (61), the intermediate plate (63), the sliding plate (64), and the fluorine resin plate (65).

Conventional port support as described above is the upper plate and the pier by the external force acting on the upper plate by the rubber plate 61 and the sliding plate 64 and the fluorine resin plate 65 inserted between the upper and lower plates (4, 5) Even if a relative displacement or abnormal load is generated between the two, due to the buffering action of the rubber plate 61 and the lubrication action between the sliding plate 64 and the fluorine resin plate 65 made of stainless steel, the above displacement and abnormal load are properly received. Minimizes external shocks to the deck and piers.

However, the seismic design standards are being strengthened in the new bridge design standards due to the experience and knowledge of earthquakes. Therefore, the seismic design regulations of new bridges or the existing seismic performances of existing bridges are strengthened. There is a case that does not satisfy. That is, as shown in FIG. 2, the fixed bearing (B) is installed only on the center pier (2), and the movement bearing (C) during the earthquake moves by installing a movement bearing (C). When the seismic force is to be endured only by the fixed support (B) on the middle pier (2), the seismic load design proposed in the seismic design regulations to sufficiently endure the seismic force is increased, so that the seismic design on the pier where the fixed support (B) is installed. There was a problem that excessive seismic loads suggested by the regulation would occur.

Thus, as shown in Figure 3, for the short-term load repeated at high speeds, such as earthquake loads by restraining the upper structure to the piers on which the movable bearing is installed using the impact load locking device (LUD, D) that acts as a rigid body The seismic forces were distributed to the piers so that they could behave safely.

However, there was no economical cost such as installation cost and maintenance cost to install the port support device and LUD device separately, and due to the complexity and difficulty of installation, the effectiveness was hardly achieved.

Accordingly, the present applicant to install the impact load locking device (LUD) having a cross section as shown in Figure 4 in the port support device together as shown in Figure 5 to solve the above problems Utility Model Application No. 2000-35266 Has been filed.

However, the above-mentioned device transmits very small loads to the piers for the movement of super slow structures such as temperature, expansion, creep, etc., and acts as a locking device up to the proposed action force of the device against impact high-speed loads such as earthquakes and vehicle loads. Since it does not play a role of reducing the seismic force acting on the bridge as a whole, the seismic force that the locking device must bear is large, and the size of the supporting base as well as the locking device (LUD) is deformed. . In addition, in the case of bridges with short bridges, when the locking device is installed in the bridges on which the movable support is installed, the overall rigidity of the bridges is greatly increased.

The present invention has been made to solve the above problems, the object of the present invention is to solve the installation and maintenance difficulties as well as when the base is placed in the lateral direction than when the conventional port support and the spring damper device separately. It is possible to restrain the lateral behavior by suppressing the initial pressure at all times, and to reduce the seismic force by nonlinear hysteretic behavior even during an earthquake, and to effectively accommodate the two-way movement in the event of a load, a separate resilience device is not necessary. An improved spring damper device is provided to provide a combined pot rest.

Port base is coupled to the spring damper device of the present invention to achieve the above object is the upper and lower plates respectively inserted by a plurality of anchor bolts embedded in the upper plate and the pier side, rubber plate inserted into the inner groove of the lower plate, sealing In the support base comprising a ring, an intermediate plate, a sliding plate and a fluororesin plate,

A fixing plate is attached to the lower part of the lower plate by the anchor bolts, and both sides of the upper plate are formed with square protrusions facing each other, and a fixing block is bolted to the upper plate under the square protrusions. And a spring damper device having a cylinder and a piston head at both ends between the fixing block, the fixing plate, and the upper plate, respectively, being fixed to the fixing plate.

1 is an exploded perspective view of a conventional pot support,

2 is a view illustrating a problem of a conventional support base,

Figure 3 is an installation configuration of the conventional port bearing,

4 is a cross-sectional view of a conventional impact load lock (lock up device, LUD),

5 is a perspective view of the conventional impact load locking device installed together in the port receiving device,

Figure 6 is an exploded perspective view of the port support coupled to the spring damper device (spring damper device) of the present invention,

7 is an internal sectional view of the spring damper device in the present invention,

8 is a cross-sectional view of the spring damper device in the present invention in a state coupled with the port support,

9 is a view showing the behavior of the spring damper device in the present invention.

※ Explanation of Signs of Major Parts of Drawings

1: top plate 2: pier

3: anchor bolt 4, 5: upper and lower plates

61 rubber plate 62 sealing ring

63: intermediate plate 64: sliding plate

65: fluorine resin plate 7: fixed plate

8: fixing block 9: fastening bolt

10 spring damper device 13 piston head

14: cylinder

Hereinafter, with reference to the accompanying drawings will be described in more detail the configuration and operation of the present invention.

Figure 6 is an exploded perspective view of the port support to which the spring damper device of the present invention is coupled.

As shown in the figure, the port support to which the spring damper device of the present invention is coupled is inserted into each of the upper and lower plates 1 and the anchor bolts 3 inserted into the pier 2, respectively. Including a lower plate (4, 5), a rubber plate 61, a sealing ring 62, an intermediate plate 63, a sliding plate 64 and a fluorine resin plate 65 inserted into the inner groove of the lower plate (5) In the support base made of, the lower plate 5 is attached to the fixing plate (7) by the anchor bolt (3), both sides of the upper plate (4) formed with a square projection (41) facing each other A fixing block 8 is bolted to the lower portion of the square protrusion 41 by the upper plate 4 and the bolt 9, and the fixing block 8, the fixing plate 7, and the fixing block 8 are bolted together. A spring damper device 10 having a cylinder 101 and a piston head 102 at each end between the upper plates 4 is fixedly fixed to the fixing plate 7. The features.

That is, the pot holder of the present invention has a lower plate 5, a rubber plate 61, a sealing ring 62, a piston 63, a fluorine resin plate 65, a sliding plate 64, and an upper portion from the bottom, similar to a general pot holder. It is coupled in the order of the plate (4), the sealing ring 62 not only restricts the plane movement of the rubber plate 61, but also serves to secure the intermediate plate 63 on the rubber plate on the rubber plate, The sliding plate 64 is made of stainless steel that is not rusted. In addition, the fluorine resin plate 65 is preferably a special fluorine resin plate (PTFE; PolyTetrafluoroEthylene) high wear resistance and high pressure strength.

However, unlike the conventional port support, a fixing plate 7 for fixing a spring damper device is attached to the lower part of the lower plate, and the square protrusions 41 are opposed to each other on both sides of the upper plate 4. It is formed, the fixing block (Fixing Block, 8) is attached to the lower portion of the square projection (41).

7 shows an internal cross section of the spring damper device of the present invention, and FIG. 8 shows a cross section of the spring damper device of the present invention in a state coupled with the port support.

As shown in the drawing, the spring damper device 10 includes a piston head 13 and a cylinder 14 at both ends, and the cylinder 14 has a low viscosity at low speed and high viscosity at high speed. The special fluid 19 of the silicone series is contained therein, and the spring damper device 10 includes a piston rod 12 connecting the piston head 13 and the piston rod 12 penetrates the cylinder ( 14 to seal the flange 15, the housing 16 forming the cylindrical surface of the spring damper device 10, the air is formed in the housing 16 to achieve the air pressure in the center of the spring damper device 10 Curved 18 is located between the hole 17, the cylinder 14, the housing 16, the flange 15.

When the structure of the spring damper device 10 moves at a slow speed, such as temperature displacement, the spring damper device 10 is able to move slowly while contacting the space inside the cylinder with the special fluid 16, and an impact load such as an earthquake. If this works, you can move quickly.

However, as shown in FIG. 9, which shows the behavior of the spring damper device, the characteristic of the present invention is that the behavior of the spring damper device 10 according to the present invention is characterized by the use of the compressibility of the special fluid. Spring) can be used as a device, and by adjusting the amount of fluid in the cylinder, it is possible to restrain the displacement to a certain load by appropriately applying the initial load, and has the characteristics of a viscous fluid damper while moving to a load above the initial load. will be.

After the impact load is applied, it is returned to the initial state by the restoring force of the spring damper device, so a separate restoring force device is unnecessary.

Spring damper device used in the present invention may be used in various ways, but preferably the smaller the better.

The port support used in the present invention, in addition to the port support described above, makes the organic support of the port support and the spring damper device of the present invention easy to achieve the effect described below. Of course it can be used.

As described above, the port support to which the spring damper device of the present invention is coupled solves the installation and maintenance difficulty more than when it is separate from the conventional port support, as well as always restrains the lateral behavior by suppressing the initial pressure at all times. It is possible to reduce the seismic force by nonlinear hysteretic behavior even in the case of earthquake and to effectively accommodate the two-way movement in the event of a load, thus eliminating the need for a separate resilience device, and consequently, the seismic performance is greatly improved.

In particular, since a separate restoring force is unnecessary, the railway bridge is excellent in its efficacy.

Claims (1)

Upper and lower plates 4 and 5 respectively inserted by the plurality of anchor bolts 3 embedded in the upper plate 1 and the pier 2, and rubber plates 61 inserted into the inner grooves of the lower plate 5. In the port support comprising a sealing ring 62, the intermediate plate 63, the sliding plate 64 and the fluororesin plate 65, A fixing plate 7 is attached to the lower portion of the lower plate 5 by the anchor bolts 3, and both side surfaces of the upper plate 4 are formed with quadrangular protrusions 41 facing each other. A fixing block 8 is bolted to the upper plate 4 at a lower portion thereof, and between the fixing block 8 and the fixing plate 7 and the upper plate 4, respectively, a cylinder ( And a spring damper device (10) having a piston head (13) and fixedly mounted on said fixed plate (7).