A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To mitigate a burden in work.SOLUTION: A penetration testing method using a penetration testing device 1 includes an integrating compaction step S100 and a striking step S200. In the integrating compaction step S100, a double pipe 10 having a bottomed inner pipe 11 and a bottomless outer pipe 12 overlapped externally on the inner pipe 11 is penetrated into a ground while rotating. In the striking step S200, the inner pipe 11 is struck from above for deriving an N-value, while keeping the double pipe 10 underground that has been penetrated into the ground in the integrating compaction step S100. The double pipe 10 has a cylindrical spacer 13 fixed on an inner side at a bottom end of the outer pipe 12 and interposed between the inner pipe 11 and the outer pipe.SELECTED DRAWING: Figure 1
【課題】作業の負担を軽減する。【解決手段】貫入試験装置１による貫入試験方法は、一体圧密工程Ｓ１００と打撃工程Ｓ２００とを備えている。一体圧密工程Ｓ１００では、有底の内管１１、及び内管１１の外側に重ねられている無底の外管１２を有している二重管１０を、回転させながら地盤に突き入れる。打撃工程Ｓ２００では、一体圧密工程Ｓ１００で地盤に突き入れられた二重管１０を地中に維持したまま、Ｎ値を求めるために内管１１を上方から打撃する。二重管１０は、外管１２の下端内側に固定されて内管１１との間に介在している円筒形状のスペーサー１３を有している。【選択図】図１
PROBLEM TO BE SOLVED: To mitigate a burden in work.SOLUTION: A penetration testing method using a penetration testing device 1 includes an integrating compaction step S100 and a striking step S200. In the integrating compaction step S100, a double pipe 10 having a bottomed inner pipe 11 and a bottomless outer pipe 12 overlapped externally on the inner pipe 11 is penetrated into a ground while rotating. In the striking step S200, the inner pipe 11 is struck from above for deriving an N-value, while keeping the double pipe 10 underground that has been penetrated into the ground in the integrating compaction step S100. The double pipe 10 has a cylindrical spacer 13 fixed on an inner side at a bottom end of the outer pipe 12 and interposed between the inner pipe 11 and the outer pipe.SELECTED DRAWING: Figure 1
【課題】作業の負担を軽減する。【解決手段】貫入試験装置１による貫入試験方法は、一体圧密工程Ｓ１００と打撃工程Ｓ２００とを備えている。一体圧密工程Ｓ１００では、有底の内管１１、及び内管１１の外側に重ねられている無底の外管１２を有している二重管１０を、回転させながら地盤に突き入れる。打撃工程Ｓ２００では、一体圧密工程Ｓ１００で地盤に突き入れられた二重管１０を地中に維持したまま、Ｎ値を求めるために内管１１を上方から打撃する。二重管１０は、外管１２の下端内側に固定されて内管１１との間に介在している円筒形状のスペーサー１３を有している。【選択図】図１
PENETRATION TESTING METHOD AND DEVICE
貫入試験方法及び装置
SATO KATSUHIKO (author)
2018-02-08
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
PENETRATION TESTING DEVICE AND PENETRATION TESTING METHOD
| European Patent Office | 2017
| Elsevier | 1983