Application of performance‐based design to an eccentrically braced frame structure
Application of performance‐based design to an eccentrically braced frame structure
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DOI：
10.1002/tal.740
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发表时间：
2011-12
期刊：
影响因子：
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通讯作者：
T. Sabol;D. E. Nishi
中科院分区：
文献类型：
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作者：
T. Sabol;D. E. Nishi
本文主要研究基于性能的设计方法在高层偏心支撑框架结构中的应用。结构的高度超过了国际建筑规范对支撑框架的允许，通常需要双重系统。有人认为，使用全支撑框架方案可以获得更好、更具成本效益的抗震性能。制定了项目特定的性能和分析标准，限制了整体层间位移和连接旋转需求。EBF连杆模型使用最近完成的研究来校准行为，特别是与估计厚凸缘连杆梁中的连杆超强度相关的行为。主要发现包括比使用当前AISC 341抗震规定预测的更现实的柱轴向载荷需求，以及在整个建筑高度上改进的EBF强度分布，以延迟层机制的形成。版权所有© 2011约翰威利父子有限公司.
This paper focuses on the application of performance‐based design to a tall eccentrically braced frame (EBF) structure. The height of the structure exceeds that permitted by the International Building Code for braced frames, and a dual system would typically be required. It was argued that better, more cost‐effective seismic performance could be obtained using an all‐braced frame scheme. Project‐specific performance and analysis criteria were developed limiting overall story drift and link rotation demand. EBF link models used recently completed research to calibrate behavior, particularly that associated with estimating link overstrength in thick‐flanged link beams. Key findings include more realistic column axial load demands than would have been predicted using current AISC 341 Seismic Provisions as well as improved EBF strength distribution throughout the height of the building to delay formation of story mechanisms. Copyright © 2011 John Wiley & Sons, Ltd.