Railway bridge double spherical surface shock absorption and separation mount

A double-spherical, shock-absorbing and isolation technology, which is applied in bridges, bridge parts, bridge construction, etc., can solve the problems that the shock-absorbing and isolating bearings cannot be applied, the seismic force and energy are large, and the shear stiffness is small, and the working principle is simple. Clear, good earthquake period, and reduce the effect of vertical displacement

Active Publication Date: 2008-03-26
CHINA RAILWAY ENG CONSULTING GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, most railway bridges use seamless lines, which require high flatness and require small vertical displacement of the shock-absorbing and isolating bearings. Existing shock-absorbing and isolating bearings cannot be applied on railway bridges
In addition, the force of the railway bridge under the action of the train is relatively complicated. Due to the relatively small shear stiffness of the existing shock-absorbing and isolation bearings, harmful Vibration, short working life

Method used

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  • Railway bridge double spherical surface shock absorption and separation mount

Examples

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no. 1 example

[0018] Fig. 1 is a schematic structural diagram of the first embodiment of the present invention. As shown in Figure 1, the double-spherical seismic isolation bearing of the railway bridge in this embodiment includes an upper bearing plate 1, a middle bearing plate 2 and a lower bearing plate 3, and the upper surface of the lower bearing plate 3 is set as a concave spherical surface 31 , the lower surface of the middle support plate 2 is set as a convex spherical surface 21, and the concave spherical surface 31 and the convex spherical surface 21 have the same large radius of curvature, and a polytetrafluoroethylene sliding plate 5 is arranged between them to form a spherical sliding friction surface, which is used in earthquakes. Provide the displacement that consumes the seismic energy, and provide the required self-resetting ability through the self-weight of the structure, so that the upper structure returns to its original position. The lower surface of the upper support ...

no. 2 example

[0025] Fig. 2 is a schematic structural diagram of the second embodiment of the present invention. This embodiment is a movable support formed by adding a translational friction surface on the basis of the technical solution of the fixed support of the first embodiment shown in Fig. 1 . As shown in Figure 2, the double-spherical shock-absorbing and isolation bearing of the railway bridge in this embodiment includes an upper bearing plate 1, a middle bearing plate 2, a lower bearing plate 3, a top basin 6 and a polytetrafluoroethylene slide plate 5 arranged therebetween , the lower support plate 3 is fixedly connected with a shear component 4, the concave spherical surface 31 on the upper surface of the lower support plate 3 and the convex spherical surface 21 on the lower surface of the middle support plate 2 form a spherical sliding friction surface, and the lower surface of the upper support plate 1 The concave spherical surface 12 and the convex spherical surface 22 on the u...

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Abstract

The double spherical shock absorbing and insulating bearer for railroad bridge includes an upper bearing plate, a middle bearing plate and a lower bearing plate superposed successively and sliding teflon plates set between bearing plates. The lower bearing plate has fixed shearing force member. The middle bearing plate has an upper spherical surface in small curvature radium for connection to the upper bearing plate through spherical spin friction, and a lower spherical surface in great curvature radium for connection to the lower bearing plate through spherical sliding friction. In addition, there are also a top basin on the upper bearing plate and a sliding teflon plate in between. the present invention has obvious shock absorbing and insulating effect, easy control and regulation, capacity of ensuring structural safety and lowering engineering cost, and other features.

Description

technical field [0001] The invention relates to a bridge support, in particular to a railway bridge double-spherical shock-absorbing and isolation support applied to railway bridges. Background technique [0002] Since the 1980s, in order to reduce the damage of bridge structures caused by earthquakes, scholars from various countries have conducted extensive and in-depth research on the shock absorption and isolation of bridge structures, and have made great progress in theoretical research and engineering applications. After nearly 30 years of research, vibration-absorbing and isolating bearings such as laminated rubber bearings, lead rubber bearings, and high-damping rubber bearings have been developed, and energy-dissipating bearings with viscous, viscoelastic, metal yielding, and frictional characteristics have been developed. device. [0003] For bridge structures, the seismic isolation design is mainly realized by prolonging the structural period and dissipating the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/04
Inventor 辛兵李建中刘俊徐升桥王淑兰高静清彭天波
Owner CHINA RAILWAY ENG CONSULTING GRP CO LTD
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