A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PILE INVESTIGATION METHOD
PROBLEM TO BE SOLVED: To provide a pile investigation method that allows a pile to be investigated readily from inside a building, without demolition work.SOLUTION: When investigating a pile body 12 buried in ground 20 underneath a pressure-resistant slab 11 of an existing building 10, a small-diameter hole 11a is drilled through the pressure-resistant slab, and the ground 20 is excavated in a vertical direction by water jet, using a rod 3 inserted into the small-diameter hole 11a. When the ground 20 is highly viscous, the ground 20 between the rod 3 and the pile body 12 is excavated in a horizontal direction by water jet using the rod 3 inserted into the ground 20, to discharge excavated soil and form a space 23 for investigating the pile body 12. Then, the pile body 12 is investigated using a photographing device 8 and a displacement meter fitted on the rod 3.
【課題】解体工事を行うことなく、建物の内部から簡易に杭調査ができる杭調査方法を提供する。【解決手段】既存建物１０の耐圧版１１下の地盤２０に埋設された杭体１２の調査を行う際に、耐圧版１１に小径孔１１ａを空け、小径孔１１ａに通したロッド３を用い、ウォータージェットにより地盤２０を鉛直方向に掘削する。地盤２０の粘性が高い場合には、地盤２０に挿入したロッド３を用いウォータージェットにてロッド３と杭体１２の間の地盤２０を水平方向に掘削し、掘削土を排出して杭体１２の調査用空間２３を形成する。そして、ロッド３に取り付けられた撮影装置８や変位計を用い、杭体１２の調査を行う。【選択図】図７
PILE INVESTIGATION METHOD
PROBLEM TO BE SOLVED: To provide a pile investigation method that allows a pile to be investigated readily from inside a building, without demolition work.SOLUTION: When investigating a pile body 12 buried in ground 20 underneath a pressure-resistant slab 11 of an existing building 10, a small-diameter hole 11a is drilled through the pressure-resistant slab, and the ground 20 is excavated in a vertical direction by water jet, using a rod 3 inserted into the small-diameter hole 11a. When the ground 20 is highly viscous, the ground 20 between the rod 3 and the pile body 12 is excavated in a horizontal direction by water jet using the rod 3 inserted into the ground 20, to discharge excavated soil and form a space 23 for investigating the pile body 12. Then, the pile body 12 is investigated using a photographing device 8 and a displacement meter fitted on the rod 3.
【課題】解体工事を行うことなく、建物の内部から簡易に杭調査ができる杭調査方法を提供する。【解決手段】既存建物１０の耐圧版１１下の地盤２０に埋設された杭体１２の調査を行う際に、耐圧版１１に小径孔１１ａを空け、小径孔１１ａに通したロッド３を用い、ウォータージェットにより地盤２０を鉛直方向に掘削する。地盤２０の粘性が高い場合には、地盤２０に挿入したロッド３を用いウォータージェットにてロッド３と杭体１２の間の地盤２０を水平方向に掘削し、掘削土を排出して杭体１２の調査用空間２３を形成する。そして、ロッド３に取り付けられた撮影装置８や変位計を用い、杭体１２の調査を行う。【選択図】図７
PILE INVESTIGATION METHOD
杭調査方法
MIYATA AKIRA (author) / ISOBE TAKAHISA (author)
2016-01-21
Patent
Electronic Resource
Japanese
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