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Abstract:
This paper proposed a novel self-centering (SC) rocking column with the shape memory alloy slip friction damper (SMASFD). The H-section steel column was employed and the SMASFDs which provide the SC capacity and dissipate energy were installed on both sides of the column flanges symmetrically. The working principle and proof-of-concept tests of the SMASFD were introduced briefly and the emphasis was put on the analytical method of the cyclic behavior of the SC rocking column. In addition, the elaborate finite element (FE) model of the SC rocking column was established in ABAQUS. The flag-shaped hysteretic curves of the SC rocking column are obtained from the analytical method and FE model, and a good agreement can be found between them. The cyclic behavior of the SC rocking column is controlled by the behavior of the SMASFD and the axial-force ratio. The flexural strength of the column will increase with the strength of the SMASFD and increasing the stiffness of the SMASFD will increase the stiffness of the pre-yield and post-yield of the column. Under the premise of stabilization, increasing the axial-force ratio will increase the decompression moment and the strength of the column, however, this will contribute to the negative stiffness caused by the P-Δ effect increase and amplify the plastic strain of the base of the H-section steel column. Moreover, the results of FE models indicate that the side plates can prevent the middle plate from sliding sideways and thus the bending of SMA bolts can be avoided. © 2023 Science Press. All rights reserved.
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Source :
Journal of Building Structures
ISSN: 1000-6869
Year: 2023
Issue: 3
Volume: 44
Page: 39-48
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count: 2
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 6
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