Large-load high-frequency-response electro-hydraulic servo vibration device working under highly-centrifugal field

Abstract

The invention discloses a large-load high-frequency-response electro-hydraulic servo vibration device working under a highly-centrifugal field. The vibration device is mounted on a hanging basket of arotating arm of a centrifuge and driven by a hydraulic system; the vibration device comprises a model box, a bottom plate, a vibration table top and a hydraulic cylinder, and the hydraulic system comprises a high-pressure oil pump, a main oil inlet energy accumulator, a main oil return energy accumulator, a secondary oil inlet energy accumulator and a secondary oil return energy accumulator; thelarge-load high-frequency-response electro-hydraulic servo vibration device working under the highly-centrifugal field can be an electro-hydraulic servo vibration device with high load and frequency response under the highly-centrifugal field; the device effectively overcomes the defects of vibration devices and ground vibration devices based on other principles and has the advantages of high driving load capacity, high response frequency, large frequency response range, high response precision and the like, and the requirement of seismic simulation experiments of soil structures under the centrifugal field can be well met.

Description

technical field [0001] The invention relates to the field of vibration simulation tests, in particular to a large-load high-frequency-response electro-hydraulic servo vibration device working under a high centrifugal field. Background technique [0002] The vibration simulation test of the model under the centrifugal field is a high-tech research on the occurrence and failure mechanism of geotechnical engineering earthquakes. At present, this technology has been used in the anti-seismic deformation of dams, the anti-seismic stability of slopes, and the interaction between rock and soil structures under earthquake conditions. , soil liquefaction, etc. A large number of tests have shown that the vibration test results under the centrifugal field can well reproduce the engineering structure condition and failure mechanism, and it has great significance in the analysis of earthquake damage mechanism, seismic technical calculation and numerical model verification. Superiority. ...

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Problems solved by technology

The vibrating tables with different principles above cannot be widely used due to their own defects, and it is very difficult to implement the technology under the centrifugal field. The large electromagnetic actuator of the electromagnetic vibrating device has a large weight and volume, a small load, and is affected by the centrifugal force. The effective load of the machine is limited. The above-mentioned principle vibration table is mainly used on the ground. The ground vibration device cannot accurately simulate the strain field of the prototype soil and cannot accurately reproduce the real earthquake due to its shortcomings such as small drive, small load, and low vibration frequency. Occurrence and Destruction Mechanism

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