《Earthquake Engineering and Structural Dynamics》杂志刊登“装有被动附加阻尼系统的结构抗震设计性能谱法”

作者：Jack Wen Wei Guo；Constantin Christopoulos

刊物：《Earthquake Engineering and Structural Dynamics》，2013年，42卷第6期，935-952页

关键词：基于性能设计；非线性响应；抗震加固；附加阻尼；等效单自由度系统

摘要：本文利用中低层框架结构的性能谱并结合附件阻尼装置提出了一种直接基于性能设计的新方法（性能谱法）。性能谱是一个将装有附加阻尼器的单自由度系统的非线性响应与各种阻尼系数和动力系统的可控属性结合在一起的图像工具。这个工具可以将对结构性能有重要贡献的多个响应值整合为一个简洁的图像，便于和不同的潜在解决方案相比较。这些潜在方案可以满足一系列不同震害水平的设计性能目标。单自由度到多自由度的转换程序为多自由度结构定义了需要的附加阻尼特性以便于实现目标多自由度系统所定义的响应，这些响应表现为滞后性、线粘性和粘弹性阻尼装置。最后利用理想剪力墙结构的非线性时程分析来验证转化程序的准确性。用一个提升抗震性能的设计实例来证明利用附加阻尼装置实现设计性能目标的有效性。

Performance spectra based method for the seismic design of structures equipped with passive supplemental damping systems

Authors: Jack Wen Wei Guo, Constantin Christopoulos

Journal: Earthquake Engineering and Structural Dynamics, Volume 42, Issue 6, pages935-952, May2013

Key words: performance-based design; nonlinear response; seismic retrofit; supplemental damping; equivalent SDOF system

Abstract: 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.

原文链接：http://onlinelibrary.wiley.com/doi/10.1002/eqe.2261/abstract