A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SHEAR WAVE SPEED MEASUREMENT DEVICE
To provide a shear wave speed measurement device capable of improving reception sensitivity of a receiving side piezoelectric part.SOLUTION: A shear wave speed measurement device 1 measures a shear wave speed of soil S based on output signals of reception piezoelectric parts Rto Rthat receive shear waves propagating in the ground. Amplification parts Ato Aamplify the output signals of the reception piezoelectric parts Rto Rnear the reception piezoelectric parts Rto R. The amplification parts Ato Aare installed in the ground together with the reception piezoelectric parts Rto R. A plurality of transmission piezoelectric parts Sto Sare arranged with spacing D in a depth direction in the ground so as to transmit the shear waves to the ground. A plurality of reception piezoelectric parts Rto Rare arranged with the spacing D in the depth direction in the ground so as to receive the shear waves that are transmitted for each of the transmission piezoelectric parts Sto Sand propagated in the ground. A speed distribution calculation part 8 calculates speed distribution in the ground based on the output signals of the plurality of reception piezoelectric parts Rto R.SELECTED DRAWING: Figure 1
【課題】受信側圧電部の受信感度を向上させることができるせん断波速度測定装置を提供する。【解決手段】せん断波速度測定装置１は、土中を伝搬するせん断波を受信する受信圧電部Ｒ1〜Ｒ4の出力信号に基づいて、土Ｓのせん断波速度を測定する。増幅部Ａ1〜Ａ4は、受信圧電部Ｒ1〜Ｒ4の直近でこの受信圧電部Ｒ1〜Ｒ4の出力信号を増幅する。増幅部Ａ1〜Ａ4は、受信圧電部Ｒ1〜Ｒ4とともに土中に設置される。送信圧電部Ｓ1〜Ｓ4は、土中にせん断波を送信するように、土中の深さ方向に間隔Ｄをあけて複数配置されている。受信圧電部Ｒ1〜Ｒ4は、送信圧電部Ｓ1〜Ｓ4の毎に送信されて土中を伝搬するせん断波を受信可能なように、この土中の深さ方向に間隔Ｄをあけて複数配置されている。速度分布演算部８は、複数の受信圧電部Ｒ1〜Ｒ4の出力信号に基づいて、土中の速度分布を演算する。【選択図】図１
SHEAR WAVE SPEED MEASUREMENT DEVICE
To provide a shear wave speed measurement device capable of improving reception sensitivity of a receiving side piezoelectric part.SOLUTION: A shear wave speed measurement device 1 measures a shear wave speed of soil S based on output signals of reception piezoelectric parts Rto Rthat receive shear waves propagating in the ground. Amplification parts Ato Aamplify the output signals of the reception piezoelectric parts Rto Rnear the reception piezoelectric parts Rto R. The amplification parts Ato Aare installed in the ground together with the reception piezoelectric parts Rto R. A plurality of transmission piezoelectric parts Sto Sare arranged with spacing D in a depth direction in the ground so as to transmit the shear waves to the ground. A plurality of reception piezoelectric parts Rto Rare arranged with the spacing D in the depth direction in the ground so as to receive the shear waves that are transmitted for each of the transmission piezoelectric parts Sto Sand propagated in the ground. A speed distribution calculation part 8 calculates speed distribution in the ground based on the output signals of the plurality of reception piezoelectric parts Rto R.SELECTED DRAWING: Figure 1
【課題】受信側圧電部の受信感度を向上させることができるせん断波速度測定装置を提供する。【解決手段】せん断波速度測定装置１は、土中を伝搬するせん断波を受信する受信圧電部Ｒ1〜Ｒ4の出力信号に基づいて、土Ｓのせん断波速度を測定する。増幅部Ａ1〜Ａ4は、受信圧電部Ｒ1〜Ｒ4の直近でこの受信圧電部Ｒ1〜Ｒ4の出力信号を増幅する。増幅部Ａ1〜Ａ4は、受信圧電部Ｒ1〜Ｒ4とともに土中に設置される。送信圧電部Ｓ1〜Ｓ4は、土中にせん断波を送信するように、土中の深さ方向に間隔Ｄをあけて複数配置されている。受信圧電部Ｒ1〜Ｒ4は、送信圧電部Ｓ1〜Ｓ4の毎に送信されて土中を伝搬するせん断波を受信可能なように、この土中の深さ方向に間隔Ｄをあけて複数配置されている。速度分布演算部８は、複数の受信圧電部Ｒ1〜Ｒ4の出力信号に基づいて、土中の速度分布を演算する。【選択図】図１
SHEAR WAVE SPEED MEASUREMENT DEVICE
せん断波速度測定装置
NAKAYAMA TAKASHI (author) / TAKIGAWA RYO (author)
2020-08-31
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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