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A platform for research: civil engineering, architecture and urbanism
EXISTING PILE EXTRACTION METHOD AND FLUID SUPPLY DEVICE
To provide an existing pile extraction method capable of restoring the ground by constructing a high-quality solidified material in a place where an existing pile is pulled out.SOLUTION: An existing pile extraction method includes: an edge-cutting step of cutting the edge between the existing pile and the ground by penetrating the borehole casing into the ground while injecting drilling water along the outer periphery of the existing piles left underground; a restoration step of restoring a pile pullout remain by pulling out the existing pile and by solidifying muddy water that accumulates at a pile pullout remain to build a solidified body. In the restoration step, injection and mixing of cement-based solidification liquid is carried out at multiple points in the depth direction of the pile pullout remain.SELECTED DRAWING: Figure 2
【課題】既存杭の杭引抜き跡を高品質な固化体で埋戻し、地盤を復元することである。【解決手段】地中に残置された既存杭の外周に沿って削孔水を噴射しながら削孔ケーシングを地中に貫入し、前記既存杭と地盤との縁を切る縁切り工程と、前記既存杭を引抜くとともに、杭引抜き跡に貯留する泥水を固化させて固化体を構築し、前記杭引抜き跡を復元する復元工程と、を備える既存杭の引抜き工法であって、前記復元工程で、セメント系固化液の注入及び混合攪拌を、前記杭引抜き跡の深度方向における複数地点で実施することを特徴とする。【選択図】図２
EXISTING PILE EXTRACTION METHOD AND FLUID SUPPLY DEVICE
To provide an existing pile extraction method capable of restoring the ground by constructing a high-quality solidified material in a place where an existing pile is pulled out.SOLUTION: An existing pile extraction method includes: an edge-cutting step of cutting the edge between the existing pile and the ground by penetrating the borehole casing into the ground while injecting drilling water along the outer periphery of the existing piles left underground; a restoration step of restoring a pile pullout remain by pulling out the existing pile and by solidifying muddy water that accumulates at a pile pullout remain to build a solidified body. In the restoration step, injection and mixing of cement-based solidification liquid is carried out at multiple points in the depth direction of the pile pullout remain.SELECTED DRAWING: Figure 2
【課題】既存杭の杭引抜き跡を高品質な固化体で埋戻し、地盤を復元することである。【解決手段】地中に残置された既存杭の外周に沿って削孔水を噴射しながら削孔ケーシングを地中に貫入し、前記既存杭と地盤との縁を切る縁切り工程と、前記既存杭を引抜くとともに、杭引抜き跡に貯留する泥水を固化させて固化体を構築し、前記杭引抜き跡を復元する復元工程と、を備える既存杭の引抜き工法であって、前記復元工程で、セメント系固化液の注入及び混合攪拌を、前記杭引抜き跡の深度方向における複数地点で実施することを特徴とする。【選択図】図２
EXISTING PILE EXTRACTION METHOD AND FLUID SUPPLY DEVICE
既存杭の引抜き工法、及び流体供給装置
WACHI YASUHARU (author) / HIROSE HARUNA (author) / NISHIYAMA TAKASHI (author)
2023-12-01
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
EXISTING PILE REMOVAL DEVICE AND EXISTING PILE REMOVAL METHOD
| European Patent Office | 2022
EXISTING PILE REMOVAL DEVICE AND EXISTING PILE REMOVAL METHOD
| European Patent Office | 2022