A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
IMMERSION METHOD FOR CAISSON
PROBLEM TO BE SOLVED: To provide an immersion method for a caisson capable of effectively reducing a large peripheral surface friction generated on a partial outer peripheral surface of the caisson.SOLUTION: The present invention relates to an immersion method for a caisson 1 to be installed by sinking the caisson 1 to predetermined depth. The method implements, as a stress reduction step for reducing a stress of a foundation opposing an outer peripheral surface (proximate counter surface 1a) of the caisson 1, a depth range identification step for identifying a range of depth to reduce the stress as a stress reduction depth range, a drilling hole forming step for forming a drilling hole 20 by drilling soil from a ground to a deepest part of the stress reduction depth range, and an improved ground establishment step for establishing a columnar improved ground 23 within the stress reduction depth range by rotating a multiple pipe rod 21 inserted into the drilling hole 20 and destroying a skeleton structure of the foundation while injecting water from a distal end of the multiple pipe rod 21 in a lateral direction simultaneously with air.SELECTED DRAWING: Figure 6
【課題】ケーソンの一部外周面に生じた大きな周面摩擦力を効果的に低減することができるケーソンの沈設方法を提供する。【解決手段】ケーソン１を所定の深さまで沈下させて設置するケーソン１の沈設方法であって、ケーソン１の外周面（近接対向面１ａ）に対向する地盤の応力を低減させる応力低減工として、応力を低減させる深度の範囲を応力低減深度範囲として特定する深度範囲特定工程と、地上から応力低減深度範囲の最深部まで削孔して掘削孔２０を形成する掘削孔形成工程と、掘削孔２０に挿入した多重管ロッド２１の先端から水を空気と同時に横方向に噴射させながら、多重管ロッド２１を回転させて地盤の骨格構造を破壊し、応力低減深度範囲に円柱状の改良地盤２３を造成する改良地盤造成工程とを実施する。【選択図】図６
IMMERSION METHOD FOR CAISSON
PROBLEM TO BE SOLVED: To provide an immersion method for a caisson capable of effectively reducing a large peripheral surface friction generated on a partial outer peripheral surface of the caisson.SOLUTION: The present invention relates to an immersion method for a caisson 1 to be installed by sinking the caisson 1 to predetermined depth. The method implements, as a stress reduction step for reducing a stress of a foundation opposing an outer peripheral surface (proximate counter surface 1a) of the caisson 1, a depth range identification step for identifying a range of depth to reduce the stress as a stress reduction depth range, a drilling hole forming step for forming a drilling hole 20 by drilling soil from a ground to a deepest part of the stress reduction depth range, and an improved ground establishment step for establishing a columnar improved ground 23 within the stress reduction depth range by rotating a multiple pipe rod 21 inserted into the drilling hole 20 and destroying a skeleton structure of the foundation while injecting water from a distal end of the multiple pipe rod 21 in a lateral direction simultaneously with air.SELECTED DRAWING: Figure 6
【課題】ケーソンの一部外周面に生じた大きな周面摩擦力を効果的に低減することができるケーソンの沈設方法を提供する。【解決手段】ケーソン１を所定の深さまで沈下させて設置するケーソン１の沈設方法であって、ケーソン１の外周面（近接対向面１ａ）に対向する地盤の応力を低減させる応力低減工として、応力を低減させる深度の範囲を応力低減深度範囲として特定する深度範囲特定工程と、地上から応力低減深度範囲の最深部まで削孔して掘削孔２０を形成する掘削孔形成工程と、掘削孔２０に挿入した多重管ロッド２１の先端から水を空気と同時に横方向に噴射させながら、多重管ロッド２１を回転させて地盤の骨格構造を破壊し、応力低減深度範囲に円柱状の改良地盤２３を造成する改良地盤造成工程とを実施する。【選択図】図６
IMMERSION METHOD FOR CAISSON
ケーソンの沈設方法
AMASA YOSHIAKI (author) / YAMAMURA TAKUO (author) / SUGIE SHIGEHIKO (author) / YAMASHITA TORU (author)
2017-04-27
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
CAISSON IMMERSION MANAGEMENT SYSTEM AND CAISSON IMMERSION MANAGEMENT METHOD
| European Patent Office | 2015
CAISSON SKELETON IMMERSION METHOD BASED ON PNEUMATIC CAISSON METHOD
| European Patent Office | 2016