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Multi-directional vibration isolation device and disaster prevention method for infrastructure with large load

An infrastructure and multi-directional technology, applied in the field of large-bearing multi-directional vibration isolation and damping devices for infrastructure, can solve the problems of weak vertical vibration damping capacity, large vertical stiffness, weak bearing capacity, etc. The effect of stable performance, good vibration isolation performance and energy dissipation capacity

Active Publication Date: 2022-02-22
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lead-core rubber bearing can well consume the horizontal seismic action, but the vertical stiffness is relatively large, and the vertical vibration damping ability is weak
The spiral steel spring vibration isolation bearing can isolate heavy equipment and prevent vibration from being transmitted to the main structure to a certain extent, but its damping is relatively small, energy dissipation capacity is poor, rigidity is low, and the bearing capacity is weak

Method used

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  • Multi-directional vibration isolation device and disaster prevention method for infrastructure with large load
  • Multi-directional vibration isolation device and disaster prevention method for infrastructure with large load
  • Multi-directional vibration isolation device and disaster prevention method for infrastructure with large load

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Such as figure 1 , figure 2 and image 3 As shown, what the present invention describes is a multi-directional vibration isolation and damping device for large loads of infrastructure. Partial composition. The vertical vibration damping part 3 is located at the center of the base 2 and plays a role of vertical vibration damping. The horizontal shock absorbing parts 4 are arranged in pairs in the horizontal direction, evenly distributed outside the vertical shock absorbing parts 3 , and connected to the base 2 through bolts 6 and fixed end plates 7 . The helical steel spring 5 is sleeved on the horizontal shock absorbing part 4, and jointly plays the role of shock absorbing in the horizontal direction.

[0081] Such as figure 1 and figure 2 As shown, the upper end cover 1 includes a top plate 1-1, a pressing shaft 1-2, a pressing cylinder 1-3 and a reserved connecting piece 1-4.

[0082] The finale shaft 1-2 is located at the center of the top plate 1-1 and is T...

Embodiment 2

[0097] In this embodiment, the helical steel spring 5 is omitted.

Embodiment 3

[0099] In this embodiment, the horizontal shock-absorbing part 4 is replaced by a single-tube compression form, and the slide rail 2-4, the support base 2-5, the first ball joint 4-3 and the The above-mentioned spiral steel spring 5; the second spherical hinge 4-4 and the reserved connecting piece 1-4 are all replaced by slide grooves and connected by bolts, which provides a certain level and vertical support for the device while ensuring effective displacement transmission. to the deformation space, such as Figure 6 , Figure 7 and Figure 8 shown.

[0100] In the working method of the device of this embodiment, the working method of the device to bear the vertical force is the same as that of Embodiment 1, the difference is that when it is vibrated in the horizontal direction,

[0101] When the device is subjected to a certain horizontal earthquake action, the upper end cover 1 drives the horizontally arranged cylindrical damping unit 4-1 through the connecting arm to ge...

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Abstract

The invention relates to a large load bearing multi-directional vibration isolation device for infrastructure and a disaster prevention method thereof. The device includes an upper end cover, a base, a vertical vibration damping part, a horizontal vibration damping part and the like. Under the action of vertical load, the pressure cylinder of the upper end cover of the device squeezes the disc spring of the vertical vibration damping part, and the final shaft squeezes the energy dissipation vibration damping block of the vertical vibration damping part. The disc spring and the energy dissipation vibration damping block work together Isolate and dissipate vibrations in the vertical direction. The base is equipped with a limit platform to ensure that the vertical displacement of the main structure is within the allowable range. Under the horizontal earthquake action, the viscoelastic damping material of the horizontal shock absorbing part exerts energy dissipation and vibration damping effect through compression deformation. Under the action of torsion or eccentricity, the oblique force transmission unit ensures that the device does not roll over or overturn through its spatial arrangement. The invention has the characteristics of large load, high damping, and multi-directional vibration isolation and vibration reduction, and the use of energy-dissipating vibration-damping blocks provides the device with good energy dissipation capability.

Description

technical field [0001] The invention belongs to the technical field of disaster prevention and vibration reduction for infrastructures such as rail transit and nuclear power plants, and in particular relates to a multi-directional vibration isolation device and a disaster prevention method for large loads of infrastructures. Background technique [0002] Important infrastructures such as rail transit and nuclear power plants are subject to large dynamic loads during operation, including vertical dynamic loads caused by trains, generator sets and other equipment and horizontal excitations caused by earthquakes. High-speed railways and urban rail transit generally adopt a slab track structure. When the train is running, track irregularities and other wheel-rail disturbances cause track and train vibration, which affects the safety and comfort of train operation. In addition, vibration energy and noise along the track structure It is transmitted downward, causing secondary vibr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/02F16F15/04
CPCF16F15/022F16F15/04
Inventor 徐赵东崔可萌黄兴淮杜彦良吉伯海
Owner SOUTHEAST UNIV
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