KR20000042890A - Bridge system for damping vibration - Google Patents

Abstract

PURPOSE: A vibration damping bridge system is provided not to give overstress to a bridge by decreasing displacement generated upon the reaction of excessive horizontal pressure. CONSTITUTION: Upon displacement such as earthquake, elastic rolls(44) contacting with a steel bar(11) are pushed toward a narrow part within a taper recessed groove(43), attached to the steel bar before rotating. Herein, since the outer circumference of the elastic rolls is stuck to the inner circumference of the taper recessed groove, the steel bar is more held. Accordingly, a sole plate(4) moves integrally with an upper plate(1). Further, a pad(3) is made up of a compressed rubber(31) inserted with a bridge(7) reinforcing plate(32) receives the displacement and is deformed. Then, the contact between the upper plate and the bridge is properly kept so that the damage of the bridge is prevented from earthquake.

Description

Base isolation device

The present invention relates to a bridge device that properly supports the top plate placed on the pier in bridges installed in rivers, shores, etc., in particular, feces generated when an excessive lateral pressure such as a small displacement and earthquake acting by constant temperature changes Above is an invention relating to a seismic isolation device for attenuating them into a specialized structure so as not to overload the piers.

Bridge device is a device that is installed to ensure that the top plate, which is the slab structure of the bridge, is properly placed on the pier supporting it, and has various forms and functions depending on the specifications and the supporting load of the bridge. Many bearing-type bridge devices with free ends have been used. However, there are no seismic bridge devices for adaptation to earthquakes, but Korea is no longer safe from earthquakes. As the perception that it is impossible, the research on this is being activated.

Teaching devices with a seismic isolation function include Japanese Special Raids No. 63-35792 (August 18, 88) and Special Publication No. 1-23633 (August 8, 89). So 63-35792 says, "There is a low friction material on the lower surface between the mounting board on which the base of the installation is mounted and the fixed board fixed to the foundation. It is composed of a seismic isolator which encloses the outer side with a hollow park rubber and encloses a viscous fluid to fill the gap therein, which has a seismic isolation function by damping vibration by using the viscosity of the fluid. Korean Patent Publication No. 1-23633 also differs in construction, but there are no balances in the technical idea of seismic isolation using fluids.

However, in order for the above-mentioned inventions to have a seismic isolation effect with a fluid, a container containing a fluid must be sealed. It has a disadvantage that it is difficult to obtain durability.

In addition, as a selection of the first patent application No. 97-1591, as shown in Fig. 6 "In the seating apparatus that transfers and supports the load of the top plate to the pier side between the bridge deck and the piers, the enemy is inserted into the top plate Upper plate (1); as a container having a constant volume of the upper flange is formed, the lower outer peripheral portion is formed with a brace, the inner surface of the container is a lubricating surface 42 is sealed by the upper plate (1) and mounted on the piers A rubber pad 31 having a fixed plate integrally formed on the upper surface of the case having a shape spaced apart from each other at the same center of the case by a fixed plate that can be attached to the upper plate 1, and horizontally in the rubber pad 31 A plurality of reinforcing plates 32 to be loaded, a lower surface of stainless steel in contact with the lubricating surface 42 of the case, a connection spring surrounding the outer circumference of the rubber pad 31, and the connection It consists of a three-pressure bar consisting of a plurality of damping means installed between the spring and the case ", and another applicant's utility model No. 97-737 is" appropriately mounted on the top plate of the bridge as shown in FIG. A pad 3 made of compressed rubber 31 having a reinforcing plate 32 inserted therebetween is inserted between the upper plate 1 and the lower plate 2 to be seated on the piers and the upper and lower plates 1 and 2. In the teaching device comprising a bearing device comprising a smooth plate 14 attached to the upper plate 1 and a fluorine resin plate 35 attached to a support protrusion protruding from the lower plate 2 opposite to the upper plate 1, Between the brackets attached to the upper and lower plates 1 and 2 or the support, respectively, slightly spaced apart from the pad 3 or the bearing device on both or four sides, and the bracket set corresponding to the upper and lower plates 1 and 2, respectively. Bracket angle And a shock absorber made of an elastic material inserted into and partially inserted into both ends of the support bolts protruding from the same. "The above-mentioned inventions and proposals have improved seismic and anti-vibration capability over conventional Japanese inventions. The meaning is great.

Therefore, the above-mentioned inventions consisted of a structure that can properly support the device even under large deformation, but this structure is appropriately supported only for large deformation caused by an earthquake or the like, which can sometimes occur due to the urine type, for example, a temperature difference. Due to the contraction / expansion of support or deformation due to impact load such as a traffic vehicle, the absorbing ability of the deformation force due to the strong bearing force is lowered. Especially, the selection techniques of the Japanese country were developed for the earthquake-prone areas like Japan. Therefore, there is a limit to apply it as it is even in an area close to zero earthquake frequency like Korea.

The present invention has been completed in order to solve the above problems, which is to be able to configure a dedicated buffer system integrally so as to absorb not only the small strain, which is always strain, but also the large strain caused by the earthquake. The structure is to be easily installed in a predetermined position of the bridge as in the conventional bridge device, and also to minimize the manufacturing and installation cost thereof as described in detail according to the drawings as follows.

1 is a schematic cross-sectional view of the installation state of the present invention,

2 is a configuration diagram of the present invention;

3 is a cross-sectional view taken along the line A-A of FIG.

4 is another configuration diagram of the present invention;

5 is a cross-sectional view taken along the line B-B of FIG.

6 is a configuration diagram of a conventional invention;

7 is another configuration state diagram of the conventional invention.

* Explanation of symbols for the main parts of the drawings

1 --- upper plate

11 --- Steel bar 12 --- Anchor bolt

13 --- bolt

2 --- lawer plate

22 --- anchor bolt 23 --- bolt

3 --- Pad

31 --- Compressed rubber 32 --- Reinforcement plate 33 --- Steel plate

34 --- Steel plate 35 --- Fluorine resin plate

4 --- Sol plate

41 --- recessed part 42 --- lubricating surface

43 --- Taper groove 44 --- Elastic roll

45 --- Coverplate 46 --- Tanger Spring

47 --- Spring Guide

5 --- buffer cylinder

51 --- Piston 52 --- Small Hole

53 --- Piston Rod 54 --- Support Rod

6 --- tops

61 --- P.C Beam

7 --- Piers

1 is a schematic cross-sectional view schematically showing a state in which a bridge device of the present invention is installed on a bridge, and FIG. 2 is a state diagram showing one configuration of a bridge device for isolating the present invention in a perspective state, and FIG. It is sectional drawing cut | disconnected by AA line.

The present invention, as shown in the figure, between the upper plate (1) and the lower plate (2) and the upper and lower plates (1, 2) that are suitably installed at a predetermined position between the upper plate (6) and the bridge (7) of the bridge In a teaching device comprising a pad (3) inserted into the; The sole plate 4 attached to the lower end of the upper plate 6 is formed with a recessed portion 41 which is recessed at a predetermined depth at the inner center thereof, and the lower surface of the recessed portion 41 is a lubricating surface 42. A tapered groove 43 is formed on each side of the plate 4 so that the elastic rolls 44 whose diameters sequentially increase in the tapered groove 43 are inserted to be spaced apart by the same distance; The pad 3 is coupled to the upper plate 1 having the fluorine resin plate 35 attached to the upper surface thereof, and positioned at the center of the recess 41 of the sole plate 4. Ends each of which is attached to the steel bars 11 and extended to both sides are configured to insert between the elastic rolls 44 in the tapered groove 43.

In the above-described configuration, the pad 3 comprises upper and lower plates 33 and lower plates 34, which are iron plates of a predetermined thickness, on the upper and lower surfaces thereof, and each of the upper and lower plates 1 and 2 and the bolt ( 13, 23) is preferably fastened and attached.

4 is a configuration diagram showing still another configuration of the chair apparatus of the present invention, and FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4.

According to the present invention, an upper plate (1) and a lower plate (2) and pads (3) inserted between the upper and lower plates (1, 2) that are suitably installed at a predetermined position between the upper plate (6) and the bridge (7) of the bridge. In the teaching device consisting of; Forming a sole plate (4) mounted at an insertion position of the upper plate (1) in the form of a two-stage channel and making the inside thereof a lubricating surface (42); A buffer cylinder (5) having a plurality of small holes (52) perforated therein and filled with a high viscosity fluid therein is attached inside both ends of the sole plate (4); An upper plate having one end of the support rod 54 to which the piston rods 53 and 53, which are installed to face the inner side of the piston 51, is attached to the upper plate 33 of the pad 3. 1), the other end is characterized in that the lubricating surface 42 formed on the inner surface of the second stage channel of the sole plate 4 and the fluorine resin plate 35 which is properly slipped are attached to the upper end thereof.

In the drawings, reference numerals 12 and 22 are the same as those of the conventional configuration in which the upper and lower plates 1 and 2 are embedded and supported on the PC beam 61 and the piers 7 at the bottom of the upper plate 6 by anchor bolts, respectively. , 45, 46 and 47 are further described as the cover plate, the spring spring and the spring guide to assist the elastic rolls 44 to be positioned in position.

The present invention configured as described above works as follows.

In the invention according to claim 1, the present invention is a compression reinforced by upper and lower plates 1 and 2 and a reinforcing plate 32 therein (which may be omitted depending on the load scale) in the same manner as the conventional invention as a whole. Composed of the pad 3 made of rubber 31, the overall action is acted so as to suitably eliminate microdisplacement, deformation, and the like as in the conventional invention. That is, the sole plate 4 is interposed between the upper plate 6 and the upper plate 1, and the sole plate 4 forms a recessed portion 41 having a lubrication surface 42 at the center thereof. In addition, the fluorine resin plate 35 of the upper plate 1 was brought into contact with each other so as to be able to slide smoothly.

In addition, tapered grooves 43 are formed on both sides of the sole plate 4, and a plurality of pairs of elastic rolls 44 are inserted therein, and steel bars 11 attached to both sides of the upper plate 1 are provided. Respectively positioned between the pair of elastic rolls (44, 44) in the tapered grooves 43 on both sides, which is a configuration in which the pair of elastic rolls (44, 44) are in contact with each other up and down the steel bar (11). When the upper plate 6 changes its relative position from the piers 7, the position between the sole plate 4 and the upper plate 1 attached thereto changes, respectively, the elastic rolls 44 and 44 rotate only in their original positions. This allows the steel bar 11 to be displaced to the left or right in the tapered groove 43 of the sole plate 4 without friction with the steel bar 11, and the displacement is smoothed with stainless steel as described above. The smooth sliding between the lubricating surface 42 and the fluororesin plate 35 can be eliminated. In addition, since the relative position is rapidly changed between the upper plate 6 and the piers (7) during a large displacement, such as an earthquake, this means a sudden position change between the sole plate (4) and the upper plate (1), in this case the steel bar ( 11) the elastic rolls 44 and 44 contacting the steel bar 11 are pushed to the narrow side in the tapered groove 43 before being rotated, so that the outer circumference of the elastic rolls 44 and 44 is tapered groove. The 43 is in close contact with the inner circumferential surface of the steel bar 11 will be sure to ask. Accordingly, the sole plate 4 and the upper plate 1 are integrally moved by the above action. In this case, the pad 3 made of the compressed rubber 31 into which the reinforcing plate 32 is inserted is deformed by the displacement. While maintaining the connection between the top plate 6 and the bridge 7 properly, it is possible to prevent the bridge from being damaged even in an earthquake or the like. At this time, both ends of the sole plate 4, for example, the cover plate 45 is attached to both ends of the tapered groove 43 to prevent the tapered groove 43, such as bolts or welding, and the spring protruding toward the elastic roll 44 on the inner surface When the elastic roll 44 is supported by the finger spring 46 inserted into the guide 47, the above-described action can be performed at all times, and it is apparent that such deformation does not deviate from the scope of the present invention. .

In the invention according to claim 2, the seismic isolation device of the present invention is capable of supporting displacement of heavy loads more than the conventional device, and this function is performed by the pad 3, and the pad 3 is As a well-known technique, the reinforcement plate 32 may be planted with a steel plate in a rubber cube, or one or more soft metals such as lead may be planted in a vertical strut, and the rubber forming the rubber cube may be It is customary to use a compression rubber (31) that greatly enhances the compressive strength. Therefore, the pad 3 as described above can properly receive a large load displacement such as an earthquake, even if the pad (3) is used, the relative deformation force applied between the upper plate (6) and the pier (7) as it is pad (3). It must be delivered to the side to perform the above functions. In the present invention, the upper and lower steel plates 33 and 34, which are iron plates having a predetermined thickness, are integrally formed on the upper and lower sides of the pad 3, and the upper and lower steel plates 33 and 34 and the upper and lower plates 1 and 2, respectively. The bolts 13 and 23 were joined to achieve a firm bond. At this time, the number of bolts (13, 23) used for the coupling is generally installed in each of the four corners as shown in the cross-sectional view of Figure 3 again, but the plate (1, 2) and the iron plate ( 33, 34) can be determined in consideration of the combined area and load.

In the invention according to claim 3, the upper plate 1 is placed on a two-stage channel, and a buffer cylinder 5 is attached to the flanges at both ends thereof, and the buffer cylinder 5 has a plurality of pores 52 perforated. The piston 51 is connected to the support rod 54 through the piston rod 53, one end of the support rod 54 is coupled to the upper plate 1 and the other end is attached to the fluororesin plate 35 Since the surface is interviewed with the lubricating surface 42 of the inner surface of the upper plate 1, the normal microdisplacement is eliminated by the smooth sliding between the lubricating surface 42 and the fluorine resin plate 35. In addition, in the event of a large displacement such as an earthquake, both buffer cylinders 5 act as shock absorbers until one end of the support rod 54 slides to the step of the upper plate 1 formed in two stages. The deformation force is alleviated, and further displacement can be solved again by deformation of the pad 3. At this time, the attachment between the rear of the buffer cylinder (5) and the flanges on both ends of the upper plate (1) may be any known means, such as welding or bolting, but bolting, etc., which is easy to combine and detach in later repair and reconstruction, is preferable. .

As described above, the present invention can provide a seismic isolation device capable of professionally responding to small displacements and large displacements by additionally configuring the conventional teaching device, and therefore, the manufacturing cost thereof is relatively low and the installation is also related to the conventional inventions. It is economical because there is no overcarriage, and in particular, it is a useful invention that can be easily used as a countermeasure for the already installed bridges by easily replacing the already installed bridge devices with the bridge device of the present invention.

Claims (3)

A bridge comprising an upper plate 1 and a lower plate 2 and pads 3 inserted between the upper and lower plates 1 and 2 that are suitably installed at a predetermined position between the upper plate 6 and the bridge 7 of the bridge. In an apparatus; The sole plate 4 attached to the lower end of the upper plate 6 is formed with a recessed portion 41 which is recessed at a predetermined depth at the inner center thereof, and the lower surface of the recessed portion 41 is a lubricating surface 42. A tapered groove 43 is formed on each side of the plate 4 so that the elastic rolls 44 whose diameters sequentially increase in the tapered groove 43 are inserted to be spaced apart by the same distance; The pad 3 is coupled to the upper plate 1 having the fluorine resin plate 35 attached to the upper surface thereof, and positioned at the center of the recess 41 of the sole plate 4. Ends are attached to each side of the steel bar (11) attached to each of the ends of the tapered groove grooves 43, characterized in that configured to insert between the elastic rolls 44 to be inserted. The upper and lower plates of the upper and lower plates 33 and 34 are formed of upper and lower plates 1 and 2 and bolts, respectively. 13, 23) seismic isolation device characterized in that it is fastened and attached. A bridge comprising an upper plate 1 and a lower plate 2 and pads 3 inserted between the upper and lower plates 1 and 2 that are suitably installed at a predetermined position between the upper plate 6 and the bridge 7 of the bridge. In an apparatus; Forming a sole plate (4) mounted at an insertion position of the upper plate (1) in the form of a two-stage channel and making the inside thereof a lubricating surface (42); A buffer cylinder (5) having a plurality of small holes (52) perforated therein and filled with a high viscosity fluid therein is attached inside both ends of the sole plate (4); An upper plate having one end of the support rod 54 to which the piston rods 53 and 53, which are installed to face the inner side of the piston 51, is attached to the upper plate 33 of the pad 3. 1), the other end is lubricating surface 42 formed on the inner surface of the two-stage channel of the sole plate 4 and the fluorine resin plate 35, which is properly slipped is attached to the upper end, characterized in that Device.