Infrastructure large-load multidirectional vibration isolation and reduction device and disaster prevention method thereof

An infrastructure and multi-directional technology, which is applied in the field of multi-directional vibration isolation devices for large loads of infrastructure, can solve problems such as weak vertical vibration damping capacity, weak carrying capacity, and poor energy consumption capacity, and achieve large carrying capacity and work The effect of stable performance and enhanced structural stability

Active Publication Date: 2021-01-01
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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  • Infrastructure large-load multidirectional vibration isolation and reduction device and disaster prevention method thereof
  • Infrastructure large-load multidirectional vibration isolation and reduction device and disaster prevention method thereof
  • Infrastructure large-load multidirectional vibration isolation and reduction device and disaster prevention method thereof

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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PUM

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Abstract

The invention relates to an infrastructure large-load multidirectional vibration isolation and reduction device and a disaster prevention method thereof. The device comprises an upper end cover, a base, a vertical vibration reduction part, horizontal vibration reduction parts and the like. Under the action of a vertical load, a pressing cylinder of the upper end cover of the device extrudes a belleville spring of the vertical vibration reduction part, a pressing shaft extrudes energy dissipation and vibration reduction blocks of the vertical vibration reduction part, and the belleville springand the energy dissipation and vibration reduction blocks isolate and consume vibration in the vertical direction together. The base is provided with a limiting table to ensure that the vertical displacement of a main structure is within an allowable range. Under the action of horizontal earthquakes, viscoelastic damping materials of the horizontal vibration reduction parts plays a role in energydissipation and damping through compressive deformation. Under the action of torsion or eccentricity, oblique force transmission units ensure that the device does not roll over or overturn through thespatial arrangement of the oblique force transmission units. The device has the advantages of being large in bearing capacity, high in damping and capable of achieving multi-direction vibration isolation and reduction, and good energy dissipation capacity is provided for the device through the use of the energy dissipation vibration reduction blocks.

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 Applications(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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