Shock insulation support saddle with transversal elastic-plastic anti-fall girder apparatus

An anti-drop beam, elastic-plastic technology, used in bridges, bridge parts, bridge construction and other directions, to achieve the effect of simple on-site installation, reducing seismic response, and ensuring quality

Inactive Publication Date: 2009-08-05
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a shock-absorbing and isolating support with a transverse elastic-plastic anti-fall beam device, which can meet the requirements of normal use under non-earthquake conditions, transverse elastic-plastic shock-absorbing energy consumption and anti-fall beam requirements under earthquake action, To solve the problems existing in the existing anti-drop beam device

Method used

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  • Shock insulation support saddle with transversal elastic-plastic anti-fall girder apparatus
  • Shock insulation support saddle with transversal elastic-plastic anti-fall girder apparatus
  • Shock insulation support saddle with transversal elastic-plastic anti-fall girder apparatus

Examples

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Embodiment 1

[0032] A shock-absorbing and isolating support with a transverse elastic-plastic anti-drop beam device, the support adopts QZ2000SX two-way movable spherical support. The displacement along the bridge is ±100mm, and the displacement along the bridge is ±150mm.

[0033] The transverse elastic-plastic anti-drop beam device is composed of 12 isosceles triangle cantilever plates of equal thickness, the plate thickness is 30mm, the plate height is 0.3m, and the plate width at the root of the cantilever beam is 0.15m. Made of low-strength, high-ductility metal materials, material σ y =200MPa, E=200GPa, ε max = 0.05. Design maximum displacement = 150mm. (see Figure 1 ~ Figure 2 ).

Embodiment 2

[0035] A shock-absorbing and isolating support with a transverse elastic-plastic anti-drop beam device, the support adopts a QZ2000SX two-way movable spherical support. The displacement along the bridge is ±100mm, and the displacement along the bridge is ±150mm.

[0036] The transverse elastic-plastic anti-fall beam device is composed of 8 cantilever columns whose circular section diameter is proportional to 1 / 3 of the height, the column height is 0.3m, and the circular section radius at the bottom of the column is 0.027m. Made of high-strength metal materials, material [σ] = 1000MPa, E = 200GPa, ε max = 0.05. Design maximum displacement = 150mm. (see Figure 3 ~ Figure 4 ).

[0037] As a modification of the embodiment of the present invention, the support that cooperates with the transverse elastic-plastic anti-fall beam device can also adopt other types and indexes besides the spherical support.

[0038] As another modification of the embodiment of the present invention...

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Abstract

A shock absorption and insulation supporting seat with a transverse elastoplasticity beam falling prevention device comprises the beam falling prevention device, an orbit and a bridge supporting seat which comprises an upper supporting seat plate, a middle supporting seat plate and a lower supporting seat plate which are sequentially connected and fixed. The orbit is a troughlike orbit and is connected to and fixed on the lower supporting seat plate along the direction of a bridge. The beam falling prevention device comprises a plurality of cantilever beams having the same strength, one end of the beam falling prevention device is connected to and fixed on the upper supporting seat plate, and the other end is inserted into the orbit. The middle supporting seat plate of the bridge supporting seat is a spherical supporting seat and also comprises a rotating spherical surface and a sliding surface, the rotating spherical surface is connected to and fixed on the spherical surface structure at the upper part of the middle supporting seat plate, and the sliding surface is connected to and fixed on the spherical surface structure at the lower part of the middle supporting seat plate. The beam falling prevention device has elastoplasticity, prevents a beam body from widthwise shedding from the supporting seat, has the capability for absorbing shock and dissipating energy along the transverse direction of the bridge, and has simple structure and convenient field installation.

Description

technical field [0001] The invention belongs to the field of bridge safety, and relates to an anti-falling beam structure for preventing beams of a bridge superstructure from falling. Background technique [0002] The falling girder of the bridge superstructure is one of the main causes of bridge collapse. If the seismic force acting on the structure is sufficient to cause the support to fail, the superstructure can easily fall off the support. The anti-drop beam system is a new type of anti-seismic design measure, and its main function is to prevent the beam from falling off the support. [0003] The existing horizontal anti-fall beam system mainly adopts the method of brittle concrete stoppers keeping a certain distance from the beam body. The disadvantage of this measure is that under the lateral earthquake action, the beam body will collide with the block, and the brittle concrete block does not have sufficient shear resistance. In this Wenchuan earthquake in Sichuan,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/04
Inventor 彭天波李建中
Owner TONGJI UNIV
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