MODAL PROPERTIES AND FREE VIBRATION OF UPLIFTING BEHAVIOR OF MULTISTORY BUILDINGS MODELED AS UNIFORM SHEAR-BEAM

• ISHIHARA Tadashi

  Senior Researcher, Building Dept., National Institute for Land and Infrastructure Management, MLIT, Dr. Eng.

• MIDORIKAWA Mitsumasa

  Prof., Graduate School of Eng., Hokkaido University, Dr. Eng.

• AZUHATA Tatsuya

  Head, Building Dept., National Institute for Land and Infrastructure Management, MLIT, Ph. D.

Bibliographic Information

Other Title

• 均一せん断棒による多層建築物の浮き上がりモード特性と自由振動

Abstract

Dynamic behavior of buildings allowed to uplift is investigated by means of classical modal analysis of a uniform shear-beam model on a rigid ground. The equations of motion are derived and eigenproblem is solved to investigate the modal properties during uplift. Free vibration under gravity during the first excursion of uplift is analyzed to show the responses of transient uplift behavior. In addition to the confirmation of significant reduction effect, it is pointed out from the results that the relatively complicated uplift responses at a glance can be recognized as natural consequences of higher modes' properties and their behaviors.

Journal

• Journal of Structural and Construction Engineering (Transactions of AIJ)

  Journal of Structural and Construction Engineering (Transactions of AIJ) 74 (640), 1055-1061, 2009

  Architectural Institute of Japan

Keywords

• <i>Uplift</i>
• <i>Modal analysis</i>
• <i>Higher mode</i>
• <i>Equivalent modal mass and direction</i>
• <i>Distribution of story shear coefficient</i>

Details

• CRID: 1390282680582560768
• NII Article ID: 130004507611
• DOI: 10.3130/aijs.74.1055
• ISSN: 18818153
• ISSN: 13404202
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed