Double-shake table model test device capable of independently providing single DOF horizontal torsional vibration load

Abstract

The invention belongs to the structural seismic engineering experimental technology field and particularly relates to a double-shake table model test device capable of independently providing a singleDOF horizontal torsional vibration load. The test device comprises a foundation and two sets of shake table systems, wherein the two sets of shake table systems comprise actuators, shake table surfaces, sliding rail sliding blocks, bayonet devices, torsion transmission devices and acceleration sensors, the actuators are fixed on the foundation through a fixing support, the shake table surfaces realize free rotation through the sliding rail sliding block system, one end of each of the actuators is connected with an acceleration sensor, the other end of each of the actuators is hinged with thetorsion transmission device, and the DOF torsion function of the two shake table surfaces is realized. The test device is advantaged in that two main structures of a test object are respectively fixedon the two shake table surfaces, setting excitation is respectively outputted by the two actuators, through the cooperation effect of the whole device, and structural response characteristics, node mechanical property and structural damage forms of the two main structures under different torsion vibration levels are measured.

Description

technical field [0001] The invention belongs to the technical fields of structural engineering and earthquake engineering, and in particular relates to a double shaking table model test device capable of independently providing single-degree-of-freedom horizontal torsional vibration loads. Background technique [0002] In addition to the translational vibration of the building structure under the action of the earthquake, there will also be two or more main structures in some buildings, such as bridges, twin towers and other buildings. If there is a relative torsion difference, or there is a seismic zone fault between the two main structures, the seismic response during an earthquake is very complex, which deserves attention. At present, the research on the seismic effect of buildings with two main structures due to the torsion difference caused by ground motion is not yet mature enough. It is not yet possible to use theoretical explanations or numerical methods to simulate ...

AI Technical Summary

Problems solved by technology

At present, the research on the seismic effect of buildings with two main structures due to the torsion difference caused by ground motion is not yet mature enough. It is not yet possible to use theoretical explanations or numerical methods to simulate this phenomenon. Experimental research is needed to study this phenomenon. Insufficient development of a mechanism test device

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