A new three-dimensional seismic isolation device with large vertical static stiffness

Abstract

The present invention relates to the field of seismic isolation technology of construction engineering and bridge engineering, in particular to a novel three-dimensional seismic isolation device with relatively large vertical static stiffness, which includes a horizontal seismic isolation component, a transitional steel structure platform, and a vertical seismic isolation component. Horizontal shock-isolation components and vertical shock-isolation components are respectively arranged on the top and bottom of the transitional steel structure platform, and also include vertical damping elements and vertical static supports. The bottom of the structural platform is set in parallel with the vertical isolation components. The device can perform isolation functions in both the horizontal and vertical directions, and the horizontal and vertical isolations are decoupled from each other without being involved with each other and have high safety; The vertical damping member can further reduce the vertical seismic action through energy dissipation, and the vertical static support can provide a large vertical static compressive stiffness, and at the same time provide a certain tensile strength during vertical earthquakes, ensuring the superstructure Safe, easy to manufacture, easy to install and maintain.

Description

technical field [0001] The invention relates to the field of construction engineering and bridge engineering seismic isolation technology, in particular to a novel three-dimensional seismic isolation device with relatively large vertical static stiffness. Background technique [0002] Laminated rubber isolation technology plays an important role in alleviating the damage caused by horizontal earthquakes to buildings and bridge structures. It has good horizontal deformation capacity and energy dissipation effect, and can effectively isolate buildings and bridges in isolation layers. The damage to buildings and bridges caused by the horizontal vibration of earthquakes has been well tested in many actual earthquakes in recent years. However, the disadvantage of the laminated rubber isolation bearing is that it does not have the function of shock absorption in the vertical direction. From the seismic records measured in previous major earthquakes, the vertical earthquake occupie...

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Problems solved by technology

However, the disadvantage of the laminated rubber isolation bearing is that it does not have the function of shock absorption in the vertical direction. From the seismic records measured in previous major earthquakes, the vertical earthquake occupies a lot of weight in the entire seismic energy. How to solve the problem of vertical vibration? Seismic isolation in the vertical direction, especially in the field of vertical seismic isolation for some very important buildings, bridges and important equipment and equipment, has always been a major problem that plagues the entire seismic isolation field.

[0003] If the vertical seismic isolation needs a better seismic isolation effect, a smaller vertical dynamic stiffness is required, but for the larger weight of the upper part of the support, for the sake of safety, a larger vertical static stiffness is generally required. As far as the three-dimensional seismic isolation bearing is concerned, the vertical seismic isolation bearing presents a relatively contradictory concept, which requires both a large vertical static stiffness and a small vertical dynamic stiffness. How to solve this problem has become a three-dimensional An important bottleneck in the development of seismic isolation bearings

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