A Comparative Study of Seismic Performance of Steel Framed Buildings with Varied Plan-Asymmetric Properties

IF 2.1 4区工程技术 Q2 GEOCHEMISTRY & GEOPHYSICS

Journal of Earthquake and Tsunami Pub Date : 2021-02-27 DOI:10.1142/s1793431121500160

Jui‐Liang Lin, Te-Kuang Chow, Chao‐Hsien Li, Y. Yeh

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Abstract

This study looks at the influence of plan-asymmetric properties on seismic performance of steel framed buildings by means of a comparative study. The seismic fragility curves of a symmetrical nine-story steel framed building and three asymmetric-plan buildings, which are the variations of the mentioned symmetrical building, are constructed through incremental dynamic analysis (IDA). The three asymmetric-plan buildings are torsionally stiff (TS), torsionally similarly stiff (TSS), and torsionally flexible (TF) buildings, respectively. The considered plan-asymmetric properties are eccentricity ratio and uncoupled frequency ratio. A comparative study of three damage states (DS) including immediate occupancy (IO), collapse prevention (CP), and global instability (GI) of the four buildings is conducted. The results show that in terms of slight damage, both the symmetrical building and the TSS building perform better. In terms of severe damage and collapse, the symmetrical building obviously outperforms the other three asymmetric-plan buildings. In addition, the TF building always performs the worst regardless of the DSs.

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不同平面非对称钢框架结构抗震性能比较研究

本文通过对比研究的方法，探讨了平面不对称特性对钢框架建筑抗震性能的影响。通过增量动力分析(IDA)，构建了对称九层钢框架建筑和三个非对称平面建筑的地震易损性曲线，这是对称建筑的变化。这三种非对称平面建筑分别是扭转刚性(TS)、扭转相似刚性(TSS)和扭转柔性(TF)建筑。考虑的平面非对称特性是偏心比和不耦合频率比。对比研究了4栋建筑的即时占用状态(IO)、防塌状态(CP)和整体失稳状态(GI)。结果表明，在轻微损伤方面，对称结构和TSS结构表现更好。在严重破坏和倒塌方面，对称建筑明显优于其他三种不对称平面建筑。此外，无论DSs如何，TF构建总是表现最差。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Earthquake and Tsunami 地学-地球化学与地球物理

CiteScore

2.60

自引率

13.30%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Earthquake and Tsunami provides a common forum for scientists and engineers working in the areas of earthquakes and tsunamis to communicate and interact with one another and thereby enhance the opportunities for such cross-fertilization of ideas. The Journal publishes original papers pertaining to state-of-the-art research and development in Geological and Seismological Setting; Ground Motion, Site and Building Response; Tsunami Generation, Propagation, Damage and Mitigation, as well as Education and Risk Management following an earthquake or a tsunami. We welcome papers in the following categories: Geological and Seismological Aspects Tectonics: (Geology - earth processes) Fault processes and earthquake generation: seismology (earthquake processes) Earthquake wave propagation: geophysics Remote sensing Earthquake Engineering Geotechnical hazards and response Effects on buildings and structures Risk analysis and management Retrofitting and remediation Education and awareness Material Behaviour Soil Reinforced concrete Steel Tsunamis Tsunamigenic sources Tsunami propagation: Physical oceanography Run-up and damage: wave hydraulics.