Variable stiffness shock absorption device with embedded connecting beam and working method thereof

Abstract

The invention discloses a variable stiffness shock absorption device with an embedded connecting beam and a working method thereof. The device comprises a U-shaped joint, a T-shaped joint, hyperbolicspring steel sheets located at the upper end and lower end of the joints, and internal and external connecting elements for connecting the two joints, wherein the U-shaped joint and the T-shaped jointare respectively connected to cut-off connecting beams on two sides; a slotted hole of the U-shaped joint and a bulge of the T-shaped joint are matched with each other; and the misalignment displacement of the U-shaped joint and the T-shaped joint is restricted by the hyperbolic spring steel sheets at the upper ends and lower ends of the joints and the internal and external connecting elements. The device can passively adjust the stiffness and damping characteristics of the connecting beam greatly and accurately, optimally controls the dynamic response of high-rise structures for different environmental excitations such as earthquakes and wind vibrations, does not need plastic deformation and external energy, and has relatively high application prospect.

Description

technical field [0001] The invention mainly relates to the field of structural vibration control, in particular to a variable stiffness damping device embedded with connecting beams and a corresponding working method. Background technique [0002] The beam-shear wall structure is the most massive and wide-ranging structural form of multi-story structures in my country. It has high lateral stiffness and strength, but poor deformation capacity, and the effect of dampers based on interstory displacement energy dissipation and shock absorption is limited. Scholars have found that an effective way to control its dynamic response is to apply energy dissipation coupling beams. In order to take into account the differential environmental excitation of the structure under wind vibration and earthquake action of different regression periods, it is required that the energy-dissipating coupling beams have significantly different stiffness and damping characteristics under different work...

AI Technical Summary

Problems solved by technology

[0004] However, the space of the coupling beam is small and the stress state is complex, so there are relatively strict requirements on the bearing capacity, reliability, and adjustable range of stiffness of the energy dissipation device of the coupling beam.

However, the existing devices may require external energy and complex control devices, or it is difficult to avoid plastic damage caused by yield energy consumption, and repair and replacement are rarely required after earthquakes, which cannot fully meet the needs of high-rise structures for energy dissipation and shock absorption.

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