A METHOD FOR RECEIVED WAVEFORM RECONSTRUCTION BASED ON BENDER ELEMENT TEST USING FREQUENCY-SWEPT SIGNAL
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- OGINO TOSHIHIRO
- Akita University
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- MITACHI TOSHIYUKI
- Hokkaido University
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- HOOI CHAN KOK
- Hokkaido University
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- OIKAWA HIROSHI
- Akita University
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- TSUSHIMA MASAKI
- Akita National College of Technology
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説明
An experimental technique for reconstructing the received wave of bender element tests based on linear system theory is shown in this paper. In order to identify the frequency response of testing apparatus, bender element tests using frequency-swept signals are performed. Received waves for one-period sine pulse transmitting with various frequencies are calculated and compared with observed waves in several kinds of soil samples and testing apparatuses. The linearity of the testing system is also confirmed by coherence function. It is shown that calculated data are less affected by random noise and show good agreement with observed data in regards to not only waveform itself but also resulting shear wave velocity. It is mentioned that this technique can provide simulations for arbitrary transmitted waveform with high signal/noise ratio after laboratory tests are performed. It is also mentioned that this technique is advantageous when sufficient amplitude of received wave cannot be ensured or shear wave velocity must be verified, for example, due to uncertainty of arrival time by near-field effect.<br>
収録刊行物
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- ＳＯＩＬＳ ＡＮＤ ＦＯＵＮＤＡＴＩＯＮＳ
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ＳＯＩＬＳ ＡＮＤ ＦＯＵＮＤＡＴＩＯＮＳ 48 (2), 287-295, 2008
公益社団法人 地盤工学会
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詳細情報 詳細情報について
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- CRID
- 1390001204665631232
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- NII論文ID
- 130004552330
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- ISSN
- 18811418
- 00380806
- http://id.crossref.org/issn/00380806
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可