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PENETRATION TESTING MACHINE, SOIL QUALITY DETERMINATION METHOD, AND SOIL QUALITY DETERMINATION SYSTEM
To provide a penetration testing machine which has high measurement sensitivity, is resistant to an influence of the surrounding environment, and has high durability, when determining soil quality by a sound signal, a soil quality determination method, and a soil quality determination system.SOLUTION: A penetration testing machine X used in a screw weight penetration test comprises: a penetration rod 5 including a screw point 5b that penetrates into the ground in an axial direction; a sound collection unit 4 which is connected to the penetration rod 5 on the ground and in which a microphone 41 is built; and a determination section 14 that determines soil quality based on a sound signal output by the microphone 41. In at least one of the penetration rod 5 and the sound collection unit 4, a resonance chamber in which a fricative sound of the screw point 5b air-vibrates is formed in the axial direction, and the microphone 41 is positioned inside the resonance chamber.SELECTED DRAWING: Figure 1
【課題】音信号により土質を判定する際、測定感度が高く、周辺環境の影響を受け難く耐久性の高い貫入試験機、土質判定方法及び土質判定システムを提供する。【解決手段】スクリューウエイト貫入試験で用いられる貫入試験機Ｘであって、軸方向に沿って地中に貫入されるスクリューポイント５ｂを含む貫入ロッド５と、貫入ロッド５に地上で接続され、マイクロフォン４１が内蔵された集音ユニット４と、マイクロフォン４１が出力した音信号に基づいて土質を判定する判定部１４と、を備え、貫入ロッド５及び集音ユニット４の少なくとも何れか一方には、スクリューポイント５ｂの摩擦音が空気振動する共鳴室が軸方向に沿って形成されており、共鳴室の内部にマイクロフォン４１が位置している。【選択図】図１
PENETRATION TESTING MACHINE, SOIL QUALITY DETERMINATION METHOD, AND SOIL QUALITY DETERMINATION SYSTEM
To provide a penetration testing machine which has high measurement sensitivity, is resistant to an influence of the surrounding environment, and has high durability, when determining soil quality by a sound signal, a soil quality determination method, and a soil quality determination system.SOLUTION: A penetration testing machine X used in a screw weight penetration test comprises: a penetration rod 5 including a screw point 5b that penetrates into the ground in an axial direction; a sound collection unit 4 which is connected to the penetration rod 5 on the ground and in which a microphone 41 is built; and a determination section 14 that determines soil quality based on a sound signal output by the microphone 41. In at least one of the penetration rod 5 and the sound collection unit 4, a resonance chamber in which a fricative sound of the screw point 5b air-vibrates is formed in the axial direction, and the microphone 41 is positioned inside the resonance chamber.SELECTED DRAWING: Figure 1
【課題】音信号により土質を判定する際、測定感度が高く、周辺環境の影響を受け難く耐久性の高い貫入試験機、土質判定方法及び土質判定システムを提供する。【解決手段】スクリューウエイト貫入試験で用いられる貫入試験機Ｘであって、軸方向に沿って地中に貫入されるスクリューポイント５ｂを含む貫入ロッド５と、貫入ロッド５に地上で接続され、マイクロフォン４１が内蔵された集音ユニット４と、マイクロフォン４１が出力した音信号に基づいて土質を判定する判定部１４と、を備え、貫入ロッド５及び集音ユニット４の少なくとも何れか一方には、スクリューポイント５ｂの摩擦音が空気振動する共鳴室が軸方向に沿って形成されており、共鳴室の内部にマイクロフォン４１が位置している。【選択図】図１
PENETRATION TESTING MACHINE, SOIL QUALITY DETERMINATION METHOD, AND SOIL QUALITY DETERMINATION SYSTEM
貫入試験機、土質判定方法及び土質判定システム
SAKO NORIAKI (author)
2023-06-13
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
SOIL QUALITY DETERMINATION SYSTEM AND SOIL QUALITY DETERMINATION METHOD
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