バイリニア+スリップモデルに粘弾性ダンパーを用いた制振構造の応答制御設計法

摘要

Simplified theories are proposed for seismic response evaluation and preliminary design of "Bi-linear + Slip model" assumed wooden structures added with visco-elastic dampers. They are based on the single-degree-of-freedom (SDOF) idealization of multistory building, and produce the control performance curve expressing the peak responses as a function of stiffness of all components, based on spectral characteristics of the earthquake. Against the target peak response, a rule to convert the SDOF design to multistory design, with consideration to distribute damper stiffness over the building height, is also presented. Accuracy of the approach is demonstrated by passive control design and time history simulations on a variety of 2-, 3- and 5-story models.%木質建物に制振技術を適用し、効率的に耐震性を向上させようとする研究·開発が盛んに行われている。筆者らは膨大な数の実験や解析を通して、エネルギー吸収性能に優れた制振壁を開発し、それを組み込んだ木質架構の動的举動を把握するとともに、その有効性を示してきた。また、近年はそれらを合理的に用いるための制振設計法の必要性が高まっており、制振壁の許容耐力に基づく簡易設計法も提案している。