Dynamic testing of a full-scale hydraulic inerter-damper for the seismic protection of civil structures

Shigeki Nakaminami, Hidenori Kida, Kohju Ikago, Norio Inoue

    研究成果: Conference contribution

    9 被引用数 (Scopus)

    抄録

    This paper proposes a hydraulic inerter–damper inspired by the idea of the “mass pump” developed by Kawamata et al. [1973]. A mass pump produces apparent mass that is approximately two thousand times larger than the physical mass of the fluid that can fill a thin tube. This device is one of the implementations of the concept of an inerter defined by Smith [2002]. The most significant features of an inerter are that it produces inertial resistive force that is proportional to the relative acceleration between two nodes, and its apparent mass is substantially larger than its physical mass. Kawamata and Onuma [1986] further developed a tuned mass damper–like system using the apparent mass produced by the inerter–device. The basic concept of a fluid inerter invented by Tuluie [2013] is the same as that of a mass pump. Wang et al. [2011] developed a hydraulic inerter to obtain an amplified apparent mass by combining a flywheel and a hydraulic gerotor. The maximum estimated inertance (apparent mass) of the device in the experiment was 687 kg. The hydraulic inerter–damper proposed in this paper combines the mechanism used in the hydraulic inerter developed by Wang et al. [2011] and a sub-piston with orifices, generating inertial resistive and fluid viscous damping forces, respectively. Dynamic testing using a full-scale hydraulic inerter-damper confirmed that the mass of the flywheel attached to the gerotor led to an apparent mass of 12 014 metric tons.

    本文言語English
    ホスト出版物のタイトルProceedings of the 7th International Conference on Advances in Experimental Structural Engineering, AESE 2017
    編集者Marco Furinghetti, Davide Bolognini, Alberto Pavese
    出版社EUCENTRE
    ページ41-54
    ページ数14
    ISBN(電子版)9788885701021
    DOI
    出版ステータスPublished - 2017 1 1
    イベント7th International Conference on Advances in Experimental Structural Engineering, AESE 2017 - Pavia, Italy
    継続期間: 2017 9 62017 9 8

    出版物シリーズ

    名前International Conference on Advances in Experimental Structural Engineering
    2017-September
    ISSN(電子版)2522-2503

    Other

    Other7th International Conference on Advances in Experimental Structural Engineering, AESE 2017
    国/地域Italy
    CityPavia
    Period17/9/617/9/8

    ASJC Scopus subject areas

    • 土木構造工学
    • 建築および建設

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