Self-adaptive frequency modulation and inertia force gain vibration reduction space structure system

Abstract

The invention discloses a self-adaptive frequency modulation and inertia force gain vibration reduction space structure system. The vibration reduction space structure system is mainly composed of a metal round rod, a ball joint, a hollow ball joint, a metal rope, a spherical mass block, a support, a hollow metal round rod, a self-adaptive frequency modulation device and an inertia force gain energy consumption device. The self-adaptive frequency modulation device generates pushing force under the action of a piezoelectric actuator to enable an axial deformation rod to deform, the rigidity of an elastic round rod attached to the spherical mass block is changed, and therefore the vibration frequency of the spherical mass block is adjusted in real time. Under the normal condition, a vibration reduction device in the vibration reduction space structure system does not play a role. Under the action of wind load or earthquake excitation, the two ends of the inertia force gain energy consumption device generate relative displacement, and a screw rotates, so that the rotating inertia force is amplified, and a viscous medium is cut through a fan-shaped flywheel to dissipate motion energy. According to the system, vibration energy input by the outside can be fully dissipated, and the damage degree of a space structure under the action of an external load is effectively reduced.

Description

technical field [0001] The invention relates to a vibration-reducing space structure system with self-adaptive frequency modulation and inertial force gain, and belongs to the technical field of wind resistance, shock resistance and vibration reduction control of space structures. Background technique [0002] In recent years, with the continuous improvement of people's living standards, the continuous vigorous development of industrial production and cultural and sports undertakings, the existing architectural structure types are difficult to meet the spiritual and material cultural needs of the people. The space structure is widely used in buildings with different functions such as factories, factory warehouses, gymnasiums, and exhibition halls because of its advantages such as light weight, low cost, and large internal space. [0003] Space structures generally include thin shell structures, space grid structures, reticulated shell structures, suspension cable structures,...

AI Technical Summary

Problems solved by technology

The vibration reduction measures for long-span spatial structures cannot be completely and simply borrowed from traditional multi-high-rise building vibration reduction and isolation methods

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