自由地盤の強震観測に及ぼす地震計設置台座の影響
書誌事項
- タイトル別名
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- Seismic instrumentation for the observation of strong motion in the free-field
抄録
This paper discusses the seismic instrumentation for the strong motion observation in the free-field. A seismometer for the free-field observation is usually mounted on a concrete block whose motion deviates from that of the free-field ground since the block has a different level of stiffness and mass from the soil. Thus, the seismometer mounted on the concrete block may not correctly observe the free-field motion. We computed the concrete block / free-field motion transfer function in the frequency domain for various possible configurations of the block. The results indicate that the instrumentation on the concrete block provides reasonable free-field motion as long as the block is totally embedded and the embedment depth is less than 1 meter. If a portion of the concrete block projects above the ground surface, the portion will contribute to the rocking motion of the block, thus, the portion should be small in dimension and as light-weight as possible.
収録刊行物
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- 構造工学論文集 Ａ
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構造工学論文集 Ａ 53A 321-328, 2007
公益社団法人 土木学会
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詳細情報 詳細情報について
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- CRID
- 1390001205282771712
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- NII論文ID
- 130004503478
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- ISSN
- 1881820X
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- データソース種別
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- JaLC
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可