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A platform for research: civil engineering, architecture and urbanism
GROUND REINFORCEMENT CASING AND GROUND REINFORCEMENT METHOD
PROBLEM TO BE SOLVED: To make construction easy, since the number of columnar pile is reduced, when bearing power of the columnar pile can be further increased, though a ground reinforcement technique for establishing the columnar pile by a non-earth removal system is conventionally known.SOLUTION: A ground improvement casing comprises a cylindrical casing body 3 and an overhang part 63 arranged on the base end side of the casing body and forming an external shape of overhanging to the outside in the radial direction of the casing body, and the overhang part is constituted of the same diameter enlarged diameter part 65 for enlarging a diameter in the same diameter shape and an inclined diameter reduction part 67 linked on the base end side to the same diameter enlarged diameter part and reducing a diameter in an inclined shape toward the hole drilling direction. The periphery of the established columnar pile becomes a consolidation wall, and peripheral surface frictional force is secured. A part having the overhang part 63 becomes a diameter-enlarged pile head, and since its undersurface side is inclined, the consolidation wall is also formed on its periphery, and the peripheral surface frictional force is secured. Thus, ground bearing power is secured by the presence of a pile head.SELECTED DRAWING: Figure 12
【課題】無排土式で柱状杭を造成する地盤補強手法は従来から知られているが、柱状杭の支持力を一層増大できれば、柱状杭の本数を減らせるので、工事が楽になる。【解決手段】筒状ケーシング本体３と、ケーシング本体の基端側に配設され、ケーシング本体の半径方向外方に張り出した外形を成す張出し部６３とを備え、張出し部は、同径状に拡径する同径拡径部６５と、同径拡径部に基端側で連設し、削孔方向に向かって傾斜状に縮径する傾斜縮径部６７とで構成されている。造成された柱状杭の周囲は圧密壁となり、周面摩擦力が確保される。張出し部６３が有った部分は、拡径した杭頭になり、その下面側は傾斜しているので、その周囲にも圧密壁が形成され、周面摩擦力が確保される。従って、杭頭の存在により地盤支持力が確保される。【選択図】 図１２
GROUND REINFORCEMENT CASING AND GROUND REINFORCEMENT METHOD
PROBLEM TO BE SOLVED: To make construction easy, since the number of columnar pile is reduced, when bearing power of the columnar pile can be further increased, though a ground reinforcement technique for establishing the columnar pile by a non-earth removal system is conventionally known.SOLUTION: A ground improvement casing comprises a cylindrical casing body 3 and an overhang part 63 arranged on the base end side of the casing body and forming an external shape of overhanging to the outside in the radial direction of the casing body, and the overhang part is constituted of the same diameter enlarged diameter part 65 for enlarging a diameter in the same diameter shape and an inclined diameter reduction part 67 linked on the base end side to the same diameter enlarged diameter part and reducing a diameter in an inclined shape toward the hole drilling direction. The periphery of the established columnar pile becomes a consolidation wall, and peripheral surface frictional force is secured. A part having the overhang part 63 becomes a diameter-enlarged pile head, and since its undersurface side is inclined, the consolidation wall is also formed on its periphery, and the peripheral surface frictional force is secured. Thus, ground bearing power is secured by the presence of a pile head.SELECTED DRAWING: Figure 12
【課題】無排土式で柱状杭を造成する地盤補強手法は従来から知られているが、柱状杭の支持力を一層増大できれば、柱状杭の本数を減らせるので、工事が楽になる。【解決手段】筒状ケーシング本体３と、ケーシング本体の基端側に配設され、ケーシング本体の半径方向外方に張り出した外形を成す張出し部６３とを備え、張出し部は、同径状に拡径する同径拡径部６５と、同径拡径部に基端側で連設し、削孔方向に向かって傾斜状に縮径する傾斜縮径部６７とで構成されている。造成された柱状杭の周囲は圧密壁となり、周面摩擦力が確保される。張出し部６３が有った部分は、拡径した杭頭になり、その下面側は傾斜しているので、その周囲にも圧密壁が形成され、周面摩擦力が確保される。従って、杭頭の存在により地盤支持力が確保される。【選択図】 図１２
GROUND REINFORCEMENT CASING AND GROUND REINFORCEMENT METHOD
地盤補強用ケーシングおよび地盤補強工法
TAKADA SHIGEAKI (author) / SUZUKI HIDEHIKO (author) / YAMAZAKI NAOYUKI (author)
2016-12-22
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
GROUND REINFORCEMENT STRUCTURE AND GROUND REINFORCEMENT METHOD
| European Patent Office | 2023