Saturated sand liquidation damper device
A technology of damper and sandy soil, which is applied in the direction of building components and anti-seismic, etc. It can solve the problems of limited damping, restriction, and narrow frequency modulation range of vibration damping control in buildings, and achieve large frictional resistance, high vibration damping efficiency, and dynamic stickiness The effect of large coefficient
Inactive Publication Date: 2014-08-13
TSINGHUA UNIV
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Problems solved by technology
At present, the usual damper setting method is to add an additional damper device to the structure, which usually needs to occupy the space used by the building; while the FM mass damper and FM liquid damper device need to set up mass blocks or water tanks on special floors
In addition, for the frequency-tuned mass damper and the frequency-tuned liquid damper, in addition to setting floor position and quality restrictions, the frequency modulation range of the vibration damping control is narrow, and it is difficult to adapt to the strong earthquake environment
Therefore, the traditional damper setting method is very limited, and it is also very limited to improve the damping of buildings, especially for large-volume buildings such as water conservancy projects, there is currently no reliable shock-absorbing measure
Method used
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[0016] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0017] Such as figure 1 and figure 2 As shown, a saturated sand liquefaction damper device of the present invention includes a water tank 1 and saturated sand 2 filled in the water tank 1 .
[0018] Such as figure 1 As shown, as a preferred embodiment of the present invention, the bottom plate of the water tank 1 protrudes a predetermined length along the periphery, and holes are opened in the protruding part, so as to facilitate fixing with shock-absorbing buildings.
[0019] The implementation process of the present invention is: at first water tank 1 is fixed on the building that needs shock absorption; Then the sandy soil that is preferably easy to liquefy is filled in the water tank 1, and water is injected into the water tank 1 filled with sandy soil to make the sandy soil The soil is in a saturated state, forming saturated sandy soil 2; fina...
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The invention discloses a saturated sand liquidation damper device which comprises a water tank and saturated sand filling the water tank, wherein the saturated sand liquidation damper device is fixedly arranged on a construction which needs vibration damping and can vibrate together with the construction. The saturated sand liquidation damper device has special vibration damping performance, i.e., the sand is in a liquidation state during an undrained vibration process; compared with a traditional viscous liquid condenser, the coefficient of kinematic viscosity of the saturated sand liquidation damper device is large, the saturated sand liquidation damper device is high in kinematic viscosity coefficient and high in vibration damping efficiency, and is especially suitable for anti-knock needs of high-volume constructions for civil and water conservancy.
Description
technical field [0001] The invention belongs to the technical field of shock absorption of civil engineering and water conservancy building structures, and in particular relates to a shock absorption device for a saturated sand liquefaction damper. Background technique [0002] As a frontier research field of disaster prevention and mitigation, engineering structure seismic control has attracted the attention of scholars at home and abroad in the past 30 years. Passive control of engineering structures is a relatively mature structure damping control technology, including seismic isolation, energy dissipation and vibration absorption schemes, and has formed a variety of new systems for building structure damping. [0003] Compared with the seismic isolation technology, the natural vibration period of the building is extended by the use of seismic isolation devices, and the transmission of seismic energy into the building is reduced. The energy dissipation shock absorption an...
Claims
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Inventor 刘天云金峰李庆斌
Owner TSINGHUA UNIV