Dual hysteretic damper system effective for broader class of earthquake ground motions
Dual hysteretic damper system effective for broader class of earthquake ground motions
复制标题
双迟滞阻尼器系统可有效应对更广泛的地震地面运动
DOI：
10.1504/ijeie.2018.10014093
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
I. Takewaki
中科院分区：
文献类型：
--
作者：
T. Shiomi;K. Fujita;M. Tsuji;I. Takewaki
本文旨在开发一种双滞回阻尼器（DHD），它包括两个水平方向的滞回阻尼器和一个间隙元件，对更广泛的地面运动有效。为了揭示DHD参数对地震结构反应的影响，采用封闭形式求解了具有DHD的单自由度体系在临界双脉冲作用下的最大响应。能量平衡方法在这种闭型解的推导中起着核心作用。提出了一种基于灵敏度分析的多自由度系统DHD的设计方法。将地震动转化为双脉冲，克服了对设计参数产生敏感响应变化的困难。结果表明，DHD对小振幅和大振幅输入运动都是有效的，所提出的系统近似适用于记录的地面运动。通过与Monte Carlo仿真和遗传算法（GA）得到的设计结果的比较，验证了所提出的设计方法比传统方法更有效和高效。
This paper aims to develop a dual hysteretic damper (DHD) effective for a broader class of ground motions, which includes two level-oriented hysteretic dampers and a gap element. To reveal the influence of DHD parameters on the earthquake structure response, a closed-form solution is used for the maximum response of a single-degree-of-freedom system with DHD under the critical double impulse. An energy balance approach plays a central role in the derivation of such closed-form solution. A design process of DHD in a multi-degree-of-freedom system is proposed which is based on the sensitivity analysis. The transformation of earthquake ground motions into the double impulse overcomes the difficulty in the emergence of sensitive response variation to design parameters. It is demonstrated that DHD is effective for both small and large-amplitude input motions and the proposed system is applicable to recorded ground motions approximately. It is also verified through the comparison with the designs obtained by the Monte Carlo simulation and the genetic algorithm (GA) that the proposed design method is more effective and efficient than conventional methods.