Multi-dimensional seismic reduction and isolation device for storage tank

Abstract

The invention relates to the technical field of lifeline engineering, and specifically relates to a multi-dimensional seismic reduction and isolation device for a storage tank. The multi-dimensional seismic reduction and isolation device for the storage tank comprises a horizontal first-dimensional damping system, a horizontal second-dimensional damping system, a vertical damping system, an anti-torsion damping system, a circular guide rail system and a ball screw system, wherein the horizontal first-dimensional damping system and the horizontal second-dimensional damping system provide horizontal damping in two directions; and the vertical damping system and the anti-torsion damping system provide vertical damping and torsion damping separately. The device is capable of generating dampingin four directions, the damping is mutually independent and has no influence with each other, and in the case of a seism, the functions of seismic reduction and seismic isolation can be realized through the device in the horizontal direction and the vertical direction, and even with regard to a generated seismic force with a torsion quantity, so that damage to similar large LNG storage tanks in the multi-dimensional seism is greatly reduced, and the generated secondary hazards are reduced; and in addition, the device is convenient to install, simple to use, and free from special maintenance in a running process.

Description

technical field [0001] The invention relates to the technical field of lifeline engineering, in particular to a multi-dimensional shock-absorbing and isolating device for storage tanks. Background technique [0002] In the area of ​​large LNG storage tanks, a large earthquake can cause buckling, damage, collapse or even explosion of LNG storage tanks. In addition to the losses caused by storage tanks, serious secondary disasters such as fires will also occur. In addition to losses, it will also cause a large number of casualties. [0003] In order to reduce the impact of earthquakes on LNG storage tanks, rubber isolation bearings are generally installed at the bottom of large LNG storage tanks at present, which can reduce the damage caused by earthquakes and protect the safety of the upper equipment. However, the current rubber isolation bearings are only applied to isolation in two horizontal directions, and have little effect on vibration absorption in the vertical and ho...

AI Technical Summary

Problems solved by technology

However, the current rubber isolation bearings are only applied to isolation in two horizontal directions, and have little effect on vibration absorption in the vertical and horizontal torsional directions. From the seismic records measured in previous major earthquakes, vertical earthquakes in The whole seismic energy occupies a lot of weight, and at the same time, it also contains part of the torsion weight. As a major lifeline project, how to reduce the damage of large LNG storage tanks in multi-dimensional earthquakes has always been a topic worth studying.

Images