Three-dimensional isolation device

Abstract

The invention provides a three-dimensional isolation device, which belongs to the field of the vibration control of a civil engineering structure. The three-dimensional isolation device is characterized by mainly comprising a lead-laminated rubber shock isolator, a combined disc spring, a guiding shaft of the combined disc spring, a diamond steel plate damper and the like, wherein the lead-laminated rubber shock isolator is positioned at the lower part of the device, and a lower joint plate and a middle joint plate of the device are both fixed with a slide guide, a slide block and a crossed high-strength cable respectively; a fixed steel plate at the lower end of the guiding shaft of the disc spring is fixed on the middle joint plate by a bolt, the compound combined disc spring is sleeved on the guide shaft and the top end of the guide shaft is provided with an anti-pull baffle and an anti-pull bolt; and the diamond steel plate damper is positioned horizontally, and the two ends thereof are supported on a steel plate support bracket which is fixed on a fixed steel plate of the guiding shaft of the disc spring, and the middle of the diamond steel plate is fixed on an upper joint plate of the three-dimensional isolation device by a screw and a nut. The three-dimensional isolation device has enough vertical bearing force and provides proper vertical and horizontal rigidity and dampness; and key parts are connected reliably and horizontal limiting and vertical anti-pull measurements are provided.

Description

technical field [0001] The invention belongs to the field of vibration control of civil engineering structures and the field of shock isolation technology, and relates to a novel three-dimensional shock isolation device with sufficient vertical bearing capacity and three-dimensional suitable stiffness and damping, which can realize three-dimensional shock isolation of civil engineering structures or equipment at the same time , suitable for seismic isolation of industrial and civil buildings, bridges, subway projects and important equipment and other projects. Background technique [0002] Seismic isolation technology is currently one of the most mature and widely used structural control schemes in the world, and the building seismic design codes of various countries have also incorporated the relevant content of seismic isolation technology. However, most of the current seismic isolation technologies can only achieve horizontal seismic isolation effects, and basically have ...

AI Technical Summary

Problems solved by technology

Although this technical solution considers simultaneously isolating three-dimensional earthquake motions including vertical ones, if under the action of a sudden large three-dimensional earthquake motion, the upper connecting plate may jump out of the combined disc spring guide shaft and directly cause the three-dimensional vibration isolation system to be damaged. failure, and did not take into account that sudden large vertical earthquakes and the overturning of high-rise buildings may cause tensile damage to the lower lead-core laminated rubber isolator

On November 30, 2005, the State Intellectual Property Office disclosed an invention patent for a three-dimensional shock-absorbing and energy-absorbing support with variable curvature self-resetting protection, publication number: CN1702248A. The technical solution disclosed in this patent application is to use variable curvature friction sliding Horizontal shock isolation is carried out by shifting the shock isolation, and vertical shock isolation is carried out by combining the damping material between the disc spring and its laminated parts and the central shaft barrel damper. This technical solution also has a sudden large vertical jump that will cause the entire Possibility of support failure, and the vertical damping energy dissipation capacity may be insufficient

However, this technical solution does not take into account that ordinary lead rubber shock isolators do not have self-limiting and strong tensile capacity, and the vertical energy dissipation capacity provided by the friction between the combined disc spring pieces is very limited. , in the event of a large sudden vertical earthquake, the pressure sleeve may break away from the guide cylinder of the combined disc spring, resulting in failure of the support

[0004] According to the existing technical research background, the ordinary lead core laminated rubber shock isolator has suitable horizontal stiffness and energy dissipation capacity, but it does not have its own limit function, and its vertical tensile capacity is poor

The disc spring has a small structural space, but it can withstand a large axial pressure. A reasonable combination of multiple disc springs can obtain a suitable axial stiffness, but the combined disc spring does not have tensile capacity, and provides very limited damping

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