原文传递
Application of an Innovative SMA Ring Spring System for Self-Centering Steel Frames Subject to Seismic Conditions
| 题名： | Application of an Innovative SMA Ring Spring System for Self-Centering Steel Frames Subject to Seismic Conditions |
| 其他题名： | ABAQUS.2012.Analysis user's manual:Version 6.12.Waltham,MA:Dassault Systèmes. |
| 正文语种： | 英文 |
| 作者： | Cheng Fang |
| 关键词： | Shape memory alloy (SMA);Ring spring system;Self-centering connection;Cyclic performance;Numerical study;Time-history analysis |
| 摘要： | This paper presents an innovative shape memory alloy (SMA) ring spring system used for high-performance steel beam-tocolumn connections. The ring spring system, which includes a series of SMA outer rings and high-strength alloy inner rings stacked in alternation with mating tapered faces, is used in conjunction with high-strength bolts in typical extended end-plate connections to achieve favorable self-centering and energy dissipation response while ensuring ease of construction. An experimental investigation on three proof-ofconcept connection specimens with varying SMA ring thicknesses and bolt preload levels is conducted first, where the key properties, including strength, stiffness, ductility, self-centering capability, and energy dissipation, are discussed in detail. Following the experimental program, a three-dimensional (3D) numerical study is carried out that enables a more in-depth interpretation of the test results and supports the design of full-scale self-centering connections for a prototype steel moment frame. A system-level time-history analysis is then performed on the frame with various layouts of the SMA connections, and it is shown that, compared with a conventional steel frame, the structure with the SMA connections exhibits comparable maximum interstory drifts but significantly reduced residual drifts. The results also reveal that a reasonable balance between structural performance and cost may be achieved by an appropriate arrangement of the SMA connections within the structure. |
| 出版年： | 2018 |
| 论文唯一标识： | P-26Y2018V144N08023 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0002127 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 144 |
| 期： | 08 |
| 页码： | 277-291 |
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