Shaking table tests of a steel frame with diagonal self-centering braces and sliding slab spring devices
Journal
Thin-Walled Structures
Journal Volume
228
Start Page
115131
ISSN
02638231
Date Issued
2026-09
Author(s)
Huang, Li-Yu
Abstract
This study experimentally investigates a three-story steel frame that has diagonal self-centering braces (DSCBs) and a precast sliding slab with self-centering spring devices (SCSDs) through a series of shaking table tests. The adoption of a precast sliding floor system eliminates the need for on-site slab reinforcement assembling and concrete casting, thereby accelerating construction and reducing seismic force demands. The primary research objectives were to: (1) evaluate the effectiveness of SCSD in re-centering precast sliding slab; (2) examine the seismic response of the DSCB in reducing residual drift of the frame; and (3) investigate the post-earthquake performance of the DSCB under loading rates ranging from 3 to 240 mm/s after the completion of all shaking table tests. The experimental results confirm the mechanical mechanisms and dynamic stability of both the SCSD and DSCB with disc springs under dynamic and static loading conditions. The proposed system effectively mitigates the residual displacement of the frame at approximately two times the maximum considered earthquake level (=0.61 g), demonstrating its potential for seismic-resilient structural applications.
Subjects
Residual displacement
Self-centering brace
Self-centering spring device
Shaking table tests
Sliding slab
Publisher
Elsevier Ltd
Type
journal article