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Experimental and Numerical Evaluation of Older Chevron Concentrically Braced Frames with Hollow and Concrete-Filled Braces
| 题名： | Experimental and Numerical Evaluation of Older Chevron Concentrically Braced Frames with Hollow and Concrete-Filled Braces |
| 其他题名： | AISC.(1978).Specification for the design,fabrication and erection of structural steel for buildings,Chicago. |
| 正文语种： | 英文 |
| 作者： | Barbara G. Simpson |
| 关键词： | Seismic effects; Earthquake-resistant design; Concentrically braced frames; Steel braced frames; Lowductility systems; Seismic retrofit; Full-scale tests |
| 摘要： | Detailed seismic provisions for concentrically braced frames have evolved continuously since 1988. Thus, vintage-era braced frames, especially those designed prior to 1988, may be prone to a number of significant deficiencies. These deficiencies include interdependent failures at the braces, connections, and beams, making them difficult to predict without system-level tests. An experimental study was undertaken to evaluate current retrofit provisions' ability to predict the seismic response of pre-1988 existing braced frames. A nearly fullscale test specimen—representative of a 1985 chevron braced frame—was subjected to cyclic lateral loading. The specimen was subsequently upgraded with concrete-filled braces and retested. Test results demonstrate that pre-1988 braced frames are highly susceptible to weak-story behavior and local failure modes. Numerical models using standard nonlinear static methods predicted some, but not all, of these failures. Accordingly, recommendations to improve the efficacy of these numerical models are presented. |
| 出版年： | 2018 |
| 论文唯一标识： | P-26Y2018V144N03017 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001988 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 144 |
| 期： | 03 |
| 页码： | 179-196 |
相关文献
- Erratum for “Experimental and Numerical Evaluation of Older Chevron Concentrically Braced Frames with Hollow and Concrete-Filled Braces” by Barbara G. Simpson and Stephen A. Mahin
- Experimental Investigation of Chevron Concentrically Braced Frames with Yielding Beams
- Experimental Evaluation of the Seismic Vulnerability of Braces and Connections in Older Concentrically Braced Frames
- Experimental Investigation of Foam-Filled CHS Braces under Cyclic Loading
- Development and Evaluation of Seismic Retrofit Alternatives for Older Concentrically Braced Frames
- Improving Behavior of Reinforced Concrete Frames to Resist Progressive Collapse through Steel Bracings
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