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Bispherical seismic isolation support with speed locking device

A technology of speed locking and vibration reduction and isolation, which is applied to bridge parts, bridges, buildings, etc., can solve the problem that the vibration reduction and isolation mechanism cannot be activated immediately, and achieve the effect of simple vibration reduction and isolation mechanism, stable function and guaranteed quality

Inactive Publication Date: 2010-05-19
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a double-spherical shock-absorbing and isolating bearing with a speed locking device, which can meet the requirements of normal use under non-earthquake conditions and the requirements of longitudinal and bridge-direction shock-isolation under earthquake action, so as to solve the existing normal The problem that the double spherical shock-absorbing and isolating bearing used as a movable support cannot immediately start the shock-absorbing and isolating mechanism under the action of an earthquake

Method used

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  • Bispherical seismic isolation support with speed locking device
  • Bispherical seismic isolation support with speed locking device
  • Bispherical seismic isolation support with speed locking device

Examples

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Embodiment 1

[0032] A double-spherical shock-absorbing and isolating support with a speed locking device, the double-spherical shock-absorbing and isolating support adopts SMZ10000DX one-way movable spherical support. Under normal use, the displacement of the longitudinal bridge is ±100mm, and the displacement of the transverse bridge is 0mm; under the earthquake, the total displacement of the longitudinal bridge is ±200mm, and the displacement of the transverse bridge is ±200mm.

[0033] The longitudinal bridge direction speed locking device is installed on the left and right sides of the bottom plate. The speed locking device can displace ±100mm under normal use, and can lock the longitudinal bridge direction relative displacement between the lower support plate and the bottom plate under earthquake action.

[0034] The brake block is made of steel Q345 and is welded to the bottom plate. (see figure 1 , 2 ).

Embodiment 2

[0036] A double-spherical shock-absorbing and isolating support with a speed locking device, the double-spherical shock-absorbing and isolating support adopts SMZ5000DX one-way movable spherical support. Under normal use, the displacement of the longitudinal bridge is ±50mm, and the displacement of the transverse bridge is 0mm; under the earthquake, the total displacement of the longitudinal bridge is ±150mm, and the displacement of the transverse bridge is ±150mm.

[0037] The longitudinal bridge direction speed locking device can be displaced by ±50mm under normal use, and can lock the longitudinal relative displacement between the lower support plate and the bottom plate under earthquake action.

[0038]The brake block is made of steel Q235, and is connected with the bottom plate by bolts. (see image 3 , 4 )

[0039] As a modification of the embodiment of the present invention, the brake block may be made of steel or other metal materials.

[0040] As yet another modif...

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Abstract

The invention relates to a bispherical seismic isolation support with a speed locking devices. The bispherical seismic isolation support comprises a bispherical seismic isolation support, brake blocks, a baseplate and speed locking devices, wherein the baseplate is arranged at the bottom of the bispherical seismic isolation support, and the brake blocks and the speed locking devices are respectively connected with outboard side of the baseplate; the speed locking devices are arranged at one side or two symmetrical sides of the baseplate; both ends of each side of the baseplate are respectively provided with one brake block, and the speed locking devices are arranged between the two blocks positioned at the same side; and the baseplate has a flat sliding surface and forms a horizontal flat frictional pair with a polytetrafluoroethylene plate arranged below a lower support plate of the bispherical seismic isolation support. The bispherical seismic isolation support part can adapt to the normal use of bridges and the vertical bearing and rotation angle requirements under the action of earthquakes. The invention has the advantages of simple seismic isolation mechanism and stable and reliable action.

Description

technical field [0001] The invention belongs to the field of bridge safety, and relates to a structure for ensuring the earthquake safety of a bridge superstructure. Background technique [0002] The falling beam of bridge superstructure under earthquake is one of the main causes of bridge collapse. In order to ensure the seismic safety of the upper structure of the bridge, it is the simplest, direct and economical measure to install a shock-absorbing and isolating bearing between the upper and lower structures of the bridge. [0003] The existing rubber-based shock-absorbing and isolating bearings have a relatively small vertical bearing capacity, and the bearings are often relatively high because they need to adapt to the displacement of the bearing by means of shearing deformation of the rubber. Even if it is used in a medium-span bridge project, the volume, self-weight and plane size of the support are very large, making installation more difficult, and the design of th...

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