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Seismic Behavior of Welded Beam-to-Column Joints of High-Strength Steel-Moment Frame with Replaceable Damage-Control Fuses
| 题名： | Seismic Behavior of Welded Beam-to-Column Joints of High-Strength Steel-Moment Frame with Replaceable Damage-Control Fuses |
| 正文语种： | 英文 |
| 作者： | Xuchuan Lin; Yian Chen; Jia-Bao Yan; Yangyang Hu |
| 作者单位： | China Earthquake Administration |
| 关键词： | Damage-control fuses; High-strength steel (HS); Seismic design; Low-damage; Cyclic tests; Analytical models; Moment frame |
| 摘要： | This paper first proposes a high-strength (HS) steel-moment frame structure with replaceable damage-control fuses, which utilized the very large elastic deformation capacity of HS steel and damage-control functions of fuses. The damage is basically concentrated to fuses even under very rare earthquakes, and the damaged fuses can be easily replaced after earthquakes. A test program including 11 full-scale specimens was carried out to study the seismic behavior of HS steel beam-to-column joints either with or without fuses. The investigated parameters include different types of fuses, different thickness of the fuse plate, and different ways to strengthen the out-of-plane stiffness of fuse plates. The failure mode, deformation progress, hysteretic responses, skeleton curves, bending strengths, and energy-dissipation capacity of these full-scale tests were reported, analyzed, and discussed. Test results showed that the HS steel joints with fuses were able to provide large damage-free deformation. The application of proposed fuses in the HS steel-moment frame effectively shifted the damage from beam-to-column welds to replaceable fuse plates. Meanwhile, the shape of fuse plate exhibited marginal influence, but its thickness has significant influence on the T-joint. Formulas were proposed to estimate the yielding and ultimate bending strength of T-joint with fuses. Finally, a step-by-step procedure is given to design the proposed fuses. |
| 出版日期： | 2020 |
| 出版年： | 2020 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.146 |
| 期： | No.08 |
| 页码： | 04020143 |
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