原文传递
Self-Centering Rocking Composite Frame Using Double-Skin Concrete-Filled Steel Tube Columns and Energy-Dissipating Fuses in Multiple Locations
| 题名： | Self-Centering Rocking Composite Frame Using Double-Skin Concrete-Filled Steel Tube Columns and Energy-Dissipating Fuses in Multiple Locations |
| 其他题名： | AIJ(Architectural Institute of Japan).2014.Recommended provisions for seismic damping systems applied to steel structures.[In Japanese.]Tokyo:AIJ. |
| 正文语种： | 英文 |
| 作者： | Kazuhiro Hayashi |
| 关键词： | Composite structures;Double-skin CFTs;Self-centering;Rocking;Residual deformation;Slip-resistant mechanism;High-performance steels |
| 摘要： | Self-centering rocking frame structures are high-performance seismic-resilient structures that exhibit damage in specified locations and keep the majority of structural elements elastic. Their recentering mechanism efficiently eliminates residual deformations. The present study investigated experimentally the seismic performance of a self-centering rocking composite steel/concrete frame system consisting of a braced frame with double-skin concrete-filled steel tube (CFT) columns made of ultra-high-strength (HS) steel designed to remain elastic to allow a column to rock off its foundation, and a typical all-steel moment-resisting frame (MRF). Both frames were connected at the floor levels using replaceable energy-dissipating fuses made of either conventional steel or low-yield point steel to further enhance deformation capacity. Post-tensioned (PT) steel bars that go through the inner tube of the double-skin CFT columns provide reliable selfrecentering forces. An efficient shear-transfer mechanism was designed to effectively allow for uplifting behavior and prevent column base slippage. Equations to predict the base moment-frame rotation relationship of the self-centering rocking frame system were developed. Test results show that the proposed frame system reduces permanent deformations while the uplifting force is controlled by the initial posttensioned force applied to the steel bars within a 5％ margin of error. Furthermore, the proposed system exhibits a flag-shaped hysteresis loop with no residual deformation as long as the PT bars remain elastic. |
| 出版年： | 2018 |
| 论文唯一标识： | P-26Y2018V144N09019 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0002157 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 144 |
| 期： | 09 |
| 页码： | 251-263 |
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