Performance‐based plastic design (PBPD) method for earthquake‐resistant structures: an overview
Performance‐based plastic design (PBPD) method for earthquake‐resistant structures: an overview
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DOI：
10.1002/tal.547
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发表时间：
2009-10
期刊：
影响因子：
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通讯作者：
S. Goel;W. Liao;M. Reza Bayat;S. Chao
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文献类型：
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作者：
S. Goel;W. Liao;M. Reza Bayat;S. Chao
本文简要介绍了应用于建筑结构抗震设计的基于性能的塑性设计方法。该方法使用预先选定的目标漂移和屈服机制作为关键性能标准。选定危险级别的设计基础剪力是通过将结构单调向上推至目标漂移所需的功与等效单自由度达到相同状态所需的功相等来计算的。塑性设计执行详细的框架成员和连接，以实现目标屈服机制和行为。该方法已成功地应用于各种常见的钢框架系统，最近，钢筋混凝土（RC）弯矩框架。广泛的非弹性静力和动力分析结果表明，框架发展了所需的强柱侧移机制，层间漂移和延性要求完全在目标值之内，从而满足了所需的性能目标。本文所提出的20层钢和钢筋混凝土弯矩框架的例子表明，该方法对高框架特别有利，在目前的实践中，繁琐和冗长的迭代设计工作可以完全消除，同时达到目标的优异性能。基本功能量方程也可用于现有结构的地震评价。本文的结果与更详细的非弹性时程分析结果非常吻合。版权所有©2009 John Wiley & Sons， Ltd
This paper presents a brief overview of performance‐based plastic design method as applied to the seismic design of building structures. The method uses pre‐selected target drift and yield mechanisms as key performance criteria. The design base shear for a selected hazard level is calculated by equating the work needed to push the structure monotonically up to the target drift to that required by an equivalent single degree of freedom to achieve the same state. Plastic design is performed to detail the frame members and connections in order to achieve the targeted yield mechanism and behaviour. The method has been successfully applied to a variety of common steel framing systems and, more recently, to Reinforced Concrete (RC) moment frames. Results of extensive inelastic static and dynamic analyses showed that the frames developed desired strong column‐sway mechanisms, and the storey drifts and ductility demands were well within the target values, thus meeting the desired performance objectives. The examples of 20‐storey steel and RC moment frames, as presented in the paper, showed that the method is especially advantageous for tall frames, where cumbersome and lengthy iterative design work in current practice can be completely eliminated, while leading to excellent performance as targeted. The basic work‐energy equation can also be used for seismic evaluation of existing structures. The results, as presented in this paper, showed excellent agreement with those obtained from more elaborate inelastic time‐history analyses. Copyright © 2009 John Wiley & Sons, Ltd.