A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
EXISTING FOUNDATION REMOVAL METHOD AND EXISTING FOUNDATION REMOVAL SYSTEM
To provide an existing foundation removal method and an existing foundation removal system capable of surely removing an existing hollow foundation underwater in a short period of time.SOLUTION: An existing foundation removal system 30 comprises a full circumference rotary excavator 13 fitted with a standard casing pipe 11, a large-diameter casing pipe 10 connected to the tip of the standard casing pipe 11, and an injection rod 15 capable of injecting fluid into the casing pipe 10. To remove a caisson 2, the casing pipe 10 is placed in the ground 1 around the caisson 2 to below a lower edge 27 of the caisson 2. After the improved ground 16 is formed inside the casing pipe 10 under the caisson 2, water is drained from the inside of the casing pipe 10, and filling material 8 is taken out from the inside of the caisson 2. Next, a suspension member 18 is fixed inside the caisson 2, and the caisson 2 is pulled out from the ground 1 while the muddy water 23 is injected between the casing pipe 10 and the caisson 2 to give buoyancy to the caisson 2.SELECTED DRAWING: Figure 5
【課題】水中の既設の中空基礎を短期間で確実に撤去できる既設基礎の撤去方法および既設基礎の撤去システムを提供する。【解決手段】既設基礎撤去システム３０は、標準ケーシングパイプ１１が取り付けられた全周回転掘削機１３と、標準ケーシングパイプ１１の先端に接続される大径のケーシングパイプ１０と、ケーシングパイプ１０の内側に流体を噴射可能な注入ロッド１５とを具備する。ケーソン２を撤去するには、ケーシングパイプ１０をケーソン２の周囲の地盤１にケーソン２の下端２７よりも下方まで配置する。そして、ケーソン２の下方でケーシングパイプ１０の内部に改良地盤１６を形成した後、ケーシングパイプ１０内を抜水し、ケーソン２内から中埋め材８を取り出す。次に、ケーソン２内に吊り用部材１８を固定し、ケーシングパイプ１０とケーソン２との間に泥水２３を注入してケーソン２に浮力を付与しつつ、ケーソン２を地盤１から引き抜く。【選択図】図５
EXISTING FOUNDATION REMOVAL METHOD AND EXISTING FOUNDATION REMOVAL SYSTEM
To provide an existing foundation removal method and an existing foundation removal system capable of surely removing an existing hollow foundation underwater in a short period of time.SOLUTION: An existing foundation removal system 30 comprises a full circumference rotary excavator 13 fitted with a standard casing pipe 11, a large-diameter casing pipe 10 connected to the tip of the standard casing pipe 11, and an injection rod 15 capable of injecting fluid into the casing pipe 10. To remove a caisson 2, the casing pipe 10 is placed in the ground 1 around the caisson 2 to below a lower edge 27 of the caisson 2. After the improved ground 16 is formed inside the casing pipe 10 under the caisson 2, water is drained from the inside of the casing pipe 10, and filling material 8 is taken out from the inside of the caisson 2. Next, a suspension member 18 is fixed inside the caisson 2, and the caisson 2 is pulled out from the ground 1 while the muddy water 23 is injected between the casing pipe 10 and the caisson 2 to give buoyancy to the caisson 2.SELECTED DRAWING: Figure 5
【課題】水中の既設の中空基礎を短期間で確実に撤去できる既設基礎の撤去方法および既設基礎の撤去システムを提供する。【解決手段】既設基礎撤去システム３０は、標準ケーシングパイプ１１が取り付けられた全周回転掘削機１３と、標準ケーシングパイプ１１の先端に接続される大径のケーシングパイプ１０と、ケーシングパイプ１０の内側に流体を噴射可能な注入ロッド１５とを具備する。ケーソン２を撤去するには、ケーシングパイプ１０をケーソン２の周囲の地盤１にケーソン２の下端２７よりも下方まで配置する。そして、ケーソン２の下方でケーシングパイプ１０の内部に改良地盤１６を形成した後、ケーシングパイプ１０内を抜水し、ケーソン２内から中埋め材８を取り出す。次に、ケーソン２内に吊り用部材１８を固定し、ケーシングパイプ１０とケーソン２との間に泥水２３を注入してケーソン２に浮力を付与しつつ、ケーソン２を地盤１から引き抜く。【選択図】図５
EXISTING FOUNDATION REMOVAL METHOD AND EXISTING FOUNDATION REMOVAL SYSTEM
既設基礎の撤去方法および既設基礎の撤去システム
OKUBO KENJI (author)
2023-03-08
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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