KR200222499Y1 - Elastomeric Bearing of Restrained Side Expansion for Bridge Bearing - Google Patents

Abstract

The present invention relates to an elastic support that is installed between the upper and lower structures of the upper beam or structure of the bridge to support the load,

The general phenomenon of elastic pads used for seismic bearings and seismic bearings is that the lateral free surface swelling phenomenon intensifies as the upper load increases, which significantly reduces the function of the elastic bearings. The sheet is formed into an integral form by integrating and reinforcing cylindrically in and out of the elastic pad of the rubber material and surroundings, thereby forming an elastic support composed of lateral reinforcement elastic pads, and perfectly restraining the lateral expansion phenomenon to support a larger load. At the same time, the buckling phenomenon is improved, and the lateral expansion suppression for seismic and impact mitigation is greatly reduced, which reduces the production, transportation, and construction costs by preventing the aging by the protection of the outer surface of the elastic pad and simplifying the manufacturing, installation, and maintenance process. It is an elastic bearing.

Description

Elastomeric Bearing of Restrained Side Expansion for Bridge Bearing}

The present invention relates to a side expansion preventing elastic support of a bridge bridge device used for the purpose of mitigating vibration or impact applied between the base and the main body of a bridge or building structure, more specifically, by the continuous load of the supporting object It relates to having a reinforcing function for suppressing the phenomenon that the side free surface of the support bulge as the tissue of the base sinks.

Typically, the support applied to bridges and general buildings is composed of a steel support or an elastic support of rubber material, wherein the elastic support is a continuous load on the upper steel plate 10 by the support object as shown in FIG. In this case, as the load is increased, the elastic rubber pad 60 causes the swelling portion 61 in which the lateral free surface is pushed out at the same time as the settlement of the tissue due to compression, thereby reducing the bearing capacity of the elastic support. Of course, there was a problem that could not be performed properly, as well as the cause of large accidents,

In order to suppress this, a typical method of preventing expansion of elastic bearings is a method of manufacturing and using a steel sheet insertion reinforcement elastic bearing pad formed by integrally inserting a reinforcing steel plate horizontally in the upper and lower and middle portions of the elastic pad. By restraining the deformation of the elastic pad to prevent the swelling phenomenon to some extent and to improve the restraint suppression to the upper load.

However, precise cutting, processing, and assembly processes of reinforcing steel plates are required, and rubber raw materials are filled between the reinforcing steel plates at tight intervals to precisely shape, compress, process, and produce vulcanization and steam heating processes. This has led to many problems such as the complexity of the awards and the dramatic increase in lead times and costs.

Therefore, there is a real need for the improvement of the above problems, the simplification of the manufacturing process, the improvement of the function of the elastic support and the cost reduction, and the development of more improved technologies and construction methods that are easy to manufacture and install.

Therefore, the purpose of the present invention is to ensure the stability of the support state by maintaining a solid support force without physical deformation of the support even if the load of the support target for a long time in the installation of the elastic support of bridges and structures, etc. Of course, it is to provide a new structure of the elastic support to facilitate the ease of manufacture and manufacturing cost. In order to achieve the above object, the present invention inserts a high strength chemical fiber sheet such as carbon fiber, glass fiber or aramid fiber into the outer circumferential surface or inside and outside of a known elastic pad, and is molded in an integrated form, thereby providing lateral reinforcement functions. It is to be able to suppress the lateral expansion phenomenon by configuring the elastic support with the elastic pad.

Figure 1a is a perspective view showing an embodiment of the present invention,

Figure 1b is a longitudinal cross-sectional view of Figure 1a,

Figure 2a is an exploded perspective view showing another configuration example of the present invention,

Figure 2b is a longitudinal cross-sectional view of Figure 2a,

Figure 3 is a perspective view of the main incision showing another configuration example of the present invention.

Figure 4 is a side view showing the expansion of the lateral free surface generated in the elastic support of the existing structure.

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

10: upper iron plate 20: lower iron plate

30: elastic pad 40: outer peripheral surface reinforcement member

40a: internal reinforcing member 40b: external reinforcing member

50: reinforcement elastic pad 50a: internal reinforcement pad

50b: external reinforcement pad 50c: rubber coating layer

60: rubber pad 61c: rubber pad bulge

Hereinafter, the technical configuration of the present invention with reference to the drawings as follows.

The present invention is to apply a cylindrical side-expansion inhibiting member using a high-strength chemical fiber sheet such as carbon fiber to the outer circumferential surface of the high-strength elastic body, other lead rods, etc. to the elastic support,

1A and 1B illustrate carbonization and crystallization of an acrylic fiber by heat-treating acrylic fibers at an appropriate temperature in order to suppress side swelling and reinforce a supporting function in constructing an elastic support. As a fiber, a high strength chemical fiber sheet such as carbon fiber or aramid fiber, which is light, has a high Young's modulus, and has high rigidity, is attached to the outer peripheral surface of a known elastic pad 30 in a cylindrical manner. The outer circumferential surface reinforcing member 40 is applied to configure the reinforcement elastic pad 50,

When the load from the upper steel plate 10 is applied, the high-strength outer circumferential reinforcing member 40 that surrounds the outer surface of the side swelling output generated from the elastic pad 30 is supported to settle the elastic pad 30 and It is possible to suppress the bulge on the side.

2a and 2b is another configuration example of the present invention, the outer circumferential surface of the elastic pad 30 constitutes an outer reinforcing member 40b having the same function as the outer circumferential surface reinforcing member 40 and the outer reinforcing member 40b therein. Compared to the internal reinforcing member (40a) of a cylindrical shape having a relatively small diameter compared to the integrated configuration, the internal reinforcing pad (50a) is formed inside the outer reinforcing pad (50b) is formed so that the elastic pad (30) Is composed of two pads having independent functions. When the load from the upper steel plate 10 is applied, the deformation force applied to the elastic pad 30 is applied to the external reinforcing member 40b and the internal reinforcing member 40a. Since it is to be blocked and supported in a double, it is possible to completely suppress the settlement (沈 下) and lateral bulge shape generated in the elastic pad (30). In addition, FIG. 3 is a rubber coating layer 50c formed on the outer circumferential surface of the elastic pad to which the chemical fiber of FIG. 1A or 2A is applied as another configuration example of the present invention. In addition to improving, it prevents the inflow of foreign substances such as dust and moisture. On the other hand, in the above, the arrangement of the high-strength reinforcing means such as carbon fiber, in addition to the structure to reinforce only the outer peripheral surface of the elastic pad 30 in the cylindrical shape, such as the outer peripheral surface reinforcing member 40 in Figures 1a and 1b, 2a and 2b, the outer reinforcing member 40b and the cylindrical inner reinforcing member 40a having a relatively small diameter are additionally inserted into the elastic pad 30 to be integrally configured to form a plurality of external parts having different diameters. And internal reinforcing pads 50a and external reinforcing pads 50b through the internal reinforcing members 40b and 40a, respectively, and the like. Replaced with cylindrical lead or other high-strength elastic body to improve the load bearing capacity and the effect of isolating base, as well as the deflection deformation of the bridge due to the different configuration of the center and the outer part of the load supporting point. It is possible to respond. Although the embodiment of the present invention only shows the most effective cylindrical elastic support, the technology of the present invention is also applicable to the elastic support of various shapes, such as other polygonal support.

As such, the present invention, unlike the elastic bearings attempting to suppress lateral expansion by stacking and joining conventional horizontal reinforcing steel plates inside the elastic bearings of bridges and structures, inserts a reinforcing member using a high-strength chemical fiber sheet such as carbon fiber into a cylindrical shape. By reinforcing and integrating the elastic pad that can restrain the physical deformation of the side by reinforcing, it is possible to suppress the swelling of the side of the elastic support even when a long period of load pressure is applied, as well as a cylindrical lead or other high strength By reinforcing and replacing the elastic body, it is possible to reduce the area of the base, improve the isolation and support functions, simplify the manufacturing installation and maintenance process of the base, and reduce the production cost.

Claims (4)

A circular or polygonal elastic support used for seismic support, earthquake-proof support, etc. is composed of a reinforcement elastic pad 50, but the reinforcement elastic pad 50 is An elastic pad 30 having an elastic material disposed between the upper iron plate 10 and the lower iron plate 20; Composed of an outer circumferential reinforcing member 40 composed of a high-strength chemical fiber sheet attached to a cylindrical shape integrally to the outer circumferential surface of the elastic pad 30 so as to restrain the swelling of the lateral free surface of the elastic pad 30. Lateral expansion inhibition elastic support of the bridge device for bridges characterized in that. The method of claim 1, The internal reinforcement pad 50a and the external reinforcement pad 50b are configured to be integrally inserted into the internal reinforcing member 40a having a smaller diameter than the external reinforcing member 40b so as to be integrally formed inside the elastic pad 30. Lateral expansion inhibiting elastic bearing of the bridge device for bridges characterized in that. The method of claim 2, Lateral expansion inhibiting elastic bearing of the bridge device for the bridge, characterized in that the internal reinforcement pad (50a) is composed of a rod-like rod body. The method according to any one of claims 1 to 3, Lateral expansion inhibiting elastic bearing of the bridge bridge device, characterized in that to form a rubber coating layer (50c) for corrosion and anti-aging integrally on the outer peripheral surface of the elastic pad to which the sheet-like reinforcing member is applied.