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Quasi-static cyclic loading experiment and analysis of double-side slotted steel tube shear damper

Hui Cun, Zhou Zhongyi, Li Yonggang, Jiao Yongkang, Hai Ran

Archives of Civil and Mechanical Engineering

2023

Vol. 23, no. 1

art. no. e45, 2023

The traditional shear type damper is optimized, and a low-cost double-sided slotted steel tube shear damper with steel tube is proposed. The elastic-plastic deformation in the plane of the slotted steel plate on the side of the steel tube is used to absorb the seismic energy to achieve the purpose of vibration reduction. Taking the height, width, joint width and wall thickness of the bending element as the design parameters, four groups of nine double-sided slotted steel tube shear dampers are designed and quasi-static tests are carried out to study the effects of different design parameters on their working performance, energy dissipation capacity and failure characteristics. The test results show that the damper has strong plastic deformation capacity, good seismic performance and energy dissipation capacity. The hysteretic curve is symmetrical and full, which is similar with shuttle shape. The yield displacement is small, but the deformation capacity is strong. Properly increasing the width of bending element and the wall thickness of steel tube is helpful to energy dissipation. The finite element model of the damper is established, and the simulation results are in good agreement with the test results, which verifies the correctness of the finite element model and can provide some reference for related engineering applications.