Performance spectra based method for the seismic design of structures equipped with passive supplemental damping systems
Performance spectra based method for the seismic design of structures equipped with passive supplemental damping systems
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DOI：
10.1002/eqe.2261
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发表时间：
2013-05
影响因子：
4.5
通讯作者：
J. Guo;C. Christopoulos
中科院分区：
文献类型：
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作者：
J. Guo;C. Christopoulos
提出了一种新的直接基于性能的设计方法，该方法利用称为性能谱（P-Spectra）的设计工具，用于包含附加阻尼装置的低层到中层框架结构。P-Spectra是一种图形工具，可将带有附加阻尼器的非线性单自由度系统的响应与结构设计人员可以控制的各种阻尼参数和动力系统特性联系起来。这些工具将对结构性能很重要的多个响应量集成到单个紧凑的图形格式中，以便于直接比较满足各种地震危险水平下的一组预定性能目标的不同潜在解决方案。一个单自由度到多自由度的转换过程，定义所需的补充阻尼性能的多自由度结构，以实现由目标单自由度系统定义的响应也提出了滞后，线性粘性和粘弹性阻尼装置。通过对理想剪切型结构的非线性时程分析，验证了转换方法的准确性。一个抗震性能升级设计的例子来证明所提出的方法，实现设计性能目标，使用附加阻尼装置的实用性。版权所有© 2012约翰威利父子有限公司.
A new direct performance‐based design method utilizing design tools called performance‐spectra (P‐Spectra) for low‐rise to medium‐rise frame structures incorporating supplemental damping devices is presented. P‐Spectra are graphic tools that relate the responses of nonlinear SDOF systems with supplemental dampers to various damping parameters and dynamic system properties that structural designers can control. These tools integrate multiple response quantities that are important to the performance of a structure into a single compact graphical format to facilitate direct comparison of different potential solutions that satisfy a set of predetermined performance objectives under various levels of seismic hazard. An SDOF to MDOF transformation procedure that defines the required supplemental damping properties for the MDOF structure to achieve the response defined by the target SDOF system is also presented for hysteretic, linear viscous and viscoelastic damping devices. Using nonlinear time‐history analyses of idealized shear structures, the accuracy of the transformation procedure is verified. A seismic performance upgrade design example is presented to demonstrate the usefulness of the proposed method for achieving design performance goals using supplemental damping devices. Copyright © 2012 John Wiley & Sons, Ltd.