A new design strategy for optimal distribution of dampers in smart building structures

Hiroki Kazama, Akira Mita

研究成果: Conference article査読

抄録

A new strategy for structural control systems using viscous dampers is proposed. When we use some energy absorption devices, such as viscous dampers, in a building structure, the devices are uniformly distributed over the building so that the input energy should not concentrate in a specific story. However, this design strategy is not always the optimum one. A unique strategy that does not utilize the uniform distribution of dampers is presented here. Many advantages exist in the system that does not have uniformly distributed dampers. First, in the stories which do not require dampers, more freedom for using the floor space is possible. In addition, this fact results in lowering the cost as well by allocating the dampers to limited stories. By simplifying the flow of energy absorption, the structural reliability is significantly improved. The simplified energy flow in the structure will enhance the feasibility of the structural health monitoring system. In this paper, it is also shown that by softening appropriately the stiffness of the story to which dampers are installed, it is possible to raise the energy absorption efficiency without causing concentration of the drift. We define the modal concentration ratio using complex modal vectors to obtain optimal story stiffness and the capacity of viscous dampers for achieving the desired damping ratio. The performances of the systems were carefully evaluated by conducting nonlinear dynamic response analyses subject to several large earthquakes. The analysis models for the structures were the lumped mass models considering shear deformation. The dampers attached to the structure were modeled as Maxwell models to incorporate the stiffness of the supporting members.

本文言語English
論文番号38
ページ(範囲)354-363
ページ数10
ジャーナルProceedings of SPIE - The International Society for Optical Engineering
5765
PART 1
DOI
出版ステータスPublished - 2005
外部発表はい
イベントSmart Structures and Materials 2005 - Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems - San Diego, CA, United States
継続期間: 2005 3月 72005 3月 10

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

フィンガープリント

「A new design strategy for optimal distribution of dampers in smart building structures」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル