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A platform for research: civil engineering, architecture and urbanism
PILE EVALUATION METHOD
To provide a pile evaluation method capable of evaluating support performance of a pile simply and accurately.SOLUTION: A pile evaluation method comprises: acquiring an elastic wave propagation velocity based on the rise time difference of an actual impact elastic wave test from when hitting the head of a pile to generate a striking wave until the striking wave propagates as an elastic wave through the pile and a reflected wave reflected at the lower end of the pile propagates as an elastic wave to the head; determining whether or not the pile is longer than a predetermined reference value; when it is determined that the pile is longer than the reference value, reducing a measured value of the elastic wave propagation velocity of the pile to calculate a pile length; and when it is determined that the value is shorter than the reference value, calculating the pile length using the measured value of the elastic wave propagation velocity of the pile.SELECTED DRAWING: Figure 7
【課題】簡便且つ的確に杭の支持性能を評価することが可能となる杭評価方法を提供する。【解決手段】杭の頭部をたたいて打撃波を発生させてから、前記打撃波が弾性波として前記杭を伝播し前記杭の下端で反射した反射波が弾性波として前記頭部に伝播するまでの実際の衝撃弾性波試験の立ち上がり時間差から弾性波伝播速度を取得し、杭が予め定めた基準値よりも長いか否かを判定して、杭が基準値よりも長いと判定した場合、前記杭の弾性波伝播速度の測定値を低減して杭長を算定し、基準値よりも短いと判定した場合、前記杭の弾性波伝播速度の測定値を用いて杭長を算定することを特徴とする杭評価方法。【選択図】図７
PILE EVALUATION METHOD
To provide a pile evaluation method capable of evaluating support performance of a pile simply and accurately.SOLUTION: A pile evaluation method comprises: acquiring an elastic wave propagation velocity based on the rise time difference of an actual impact elastic wave test from when hitting the head of a pile to generate a striking wave until the striking wave propagates as an elastic wave through the pile and a reflected wave reflected at the lower end of the pile propagates as an elastic wave to the head; determining whether or not the pile is longer than a predetermined reference value; when it is determined that the pile is longer than the reference value, reducing a measured value of the elastic wave propagation velocity of the pile to calculate a pile length; and when it is determined that the value is shorter than the reference value, calculating the pile length using the measured value of the elastic wave propagation velocity of the pile.SELECTED DRAWING: Figure 7
【課題】簡便且つ的確に杭の支持性能を評価することが可能となる杭評価方法を提供する。【解決手段】杭の頭部をたたいて打撃波を発生させてから、前記打撃波が弾性波として前記杭を伝播し前記杭の下端で反射した反射波が弾性波として前記頭部に伝播するまでの実際の衝撃弾性波試験の立ち上がり時間差から弾性波伝播速度を取得し、杭が予め定めた基準値よりも長いか否かを判定して、杭が基準値よりも長いと判定した場合、前記杭の弾性波伝播速度の測定値を低減して杭長を算定し、基準値よりも短いと判定した場合、前記杭の弾性波伝播速度の測定値を用いて杭長を算定することを特徴とする杭評価方法。【選択図】図７
PILE EVALUATION METHOD
杭評価方法
HOTTA HIROYUKI (author) / KIRIYAMA TAKATOSHI (author) / YAMATO YUKA (author)
2021-01-28
Patent
Electronic Resource
Japanese
IPC:
G01N
Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften
,
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
/
E02D
FOUNDATIONS
,
Gründungen
/
G01B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
,
Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen
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