VIBRATION CHARACTERISTICS OF A HP TYPE RC SHELL WATER TOWER ACQUIRED BY MICRO TREMOR OBSERVATION(Structures)

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  • 微動測定によるRC造HPシェル型給水塔の振動特性(構造)
  • 微動測定によるRC造HPシェル型給水塔の振動特性
  • ビドウ ソクテイ ニ ヨル RCゾウ HP シェルガタ キュウスイトウ ノ シンドウ トクセイ

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Abstract

Reinforced concrete HP shell water tower should be checked to the current seismic load requirements by the ultimate strength approach. There should be strong soil-coupled effects of top-heavy structure;however, the vibration characteristics of those structures have not been well investigated. In order to provide a linear elastic model beforehand, we have measured micro-tremor to find soil-coupled and base-fixed vibration characteristics of the structure. Moreover, we have measured micro-tremor on the ground surface around the structure and simulated H/V spectra and dispersion curves with the Rayleigh wave fundamental mode to help incorporate proper soil model into soil coupled FEM model.

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