A METHOD FOR RECEIVED WAVEFORM RECONSTRUCTION BASED ON BENDER ELEMENT TEST USING FREQUENCY-SWEPT SIGNAL

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概要

• 論文の詳細を見る

• 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.

• 社団法人地盤工学会の論文

著者

• Chan Kok

  Hokkaido University

• Tsushima Masaki

  Akita National College Of Technology

• Mitachi Toshiyuki

  Hokkaido University

• OGINO TOSHIHIRO

  Akita University

• OIKAWA HIROSHI

  Akita University

関連論文

• DETERMINATION OF SHEAR WAVE VELOCITY BY BENDER ELEMENTS USING VARIABLE-PATH LENGTH METHOD(Geomechanics of Structured Materials)
• A METHOD FOR RECEIVED WAVEFORM RECONSTRUCTION BASED ON BENDER ELEMENT TEST USING FREQUENCY-SWEPT SIGNAL

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