Semiactive Structural-Control Based on Variable Slip-Force Level Dampers
Semiactive Structural-Control Based on Variable Slip-Force Level Dampers
复制标题
基于可变滑移力水平阻尼器的半主动结构控制
DOI：
10.1061/(asce)0733-9445(2003)129:7(933
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Y. Ikeda
中科院分区：
文献类型：
--
作者：
A. Nishitani;Y. Nitta;Y. Ikeda
本文提出了一种基于可变滑力水平阻尼器的半主动控制策略。所提出的方案仅控制摩擦阻尼器的滑移力水平，使得无论地震激励水平如何，阻尼器都表现出延性因子等于 2 的双线性磁滞。由于在任何地震事件中都保持恒定的延性系数，阻尼器的行为就像线性系统一样响应任何地震激励。为了在多层建筑中实施该方案，构建了自主分散型控制系统。在这种控制系统中，存在多个子控制系统，每个子控制系统都由分散控制器或本地控制器利用本地响应信息来控制。首先通过将该控制方案应用于单自由度结构来提出基本思想。然后讨论将该方案扩展到多层建筑结构。最后，通过实验检验了利用油阻尼器作为所提出的控制策略的可行性。
This paper presents a semiactive control strategy based on variable slip-force level dampers. The proposed scheme controls only the slip-force level of the friction damper in such a way that the damper exhibits bilinear hysteresis with a ductility factor equal to two regardless of the level of seismic excitation. With a constant ductility factor maintained in any seismic event, the damper behaves like a linear system in response to any seismic excitation. For implementation of this scheme in multistory buildings, an autonomous-decentralized type of control system is constructed. In such a control system, a number of subcontrol systems are present, each of which is controlled by the decentralizing or local controller utilizing local response information. The fundamental idea is first presented through the application of this control scheme to a single-degree-of-freedom structure. The extension of the scheme to a multistory building structure is then discussed. Finally, the feasibility of utilizing oil dampers for the proposed control strategy is experimentally examined.