Dual-vibration table model test device capable of independently providing single-degree of freedom vertical torsional vibration load

Abstract

The invention belongs to the technical field of structural engineering and seismic engineering and particularly relates to a dual-vibration table model test device capable of independently providing single-degree of freedom vertical torsional vibration load, which is composed of two sets of parallel vibration table systems capable of providing vertical torsional load. Each set of system is composed of parts such as a base, a fixing support, an actuator, a hinge system, a torsion transfer device and an acceleration sensor, and the two sets of parallel systems are connected and fixed through a connection auxiliary base. An actuator fixing support and a hinge support are welded on the base, one end of the actuator is provided with an acceleration control sensor, the other end is connected with the torsion transfer device, and thus, a vertical single-degree of freedom torsion function of a table surface can be realized. Two main body structures of a test object need to be firmly fixed on the table surfaces of the two vibration tables, the two actuators set output excitation forms, and through the collaborative effects of the whole device, the structural response, the mechanical properties and the damage form of the whole structure of the test object under effects of differential vertical torsional vibration can be 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 vertical torsional vibration loads. Background technique [0002] In addition to the translational vibration of the building structure under the action of the earthquake, some buildings have two or more main structures, such as bridges, twin towers and other buildings. The torsional difference, or the existence of seismic zone faults between the two main structures, the seismic response during an earthquake is very complex, which deserves attention. At present, there have been some studies on the response of structures under two-way seismic waves, but there are very few studies on the torsional component of vertical seismic motion. This is mainly because the current observation level is limited, and it is difficult to obtain t...

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Problems solved by technology

At present, there have been some studies on the response of structures under two-way seismic waves, but there are few studies on the torsional component of vertical ground motion. This is mainly because the current observation level is limited, and it is difficult to obtain the torsional component. The research on the seismic effect of buildings with two main structures caused by vertical torsion difference is even more immature. At present, this phenomenon cannot be simulated by theoretical explanation or numerical method. Experimental research is needed to study the mechanism of the experimental device. Inadequately developed

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