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Expanded-base steel pipe pile suitable for shallow covering layer and construction method of expanded-base steel pipe pile
The invention discloses an expanded-base steel pipe pile suitable for a shallow covering layer and a construction method thereof, and belongs to the technical field of pile foundation engineering. The expanded-base steel pipe pile comprises a steel pipe pile body, an expanded-base mechanism and a grouting mechanism; the steel pipe pile is divided into an upper steel pipe section and a lower steel pipe section from top to bottom; the base expanding mechanism comprises a plurality of expanding arms, an expanding block and an extension plate, the expanding arms are evenly and annularly arranged on the side wall of the lower steel pipe section, and one ends of the expanding arms are movably connected with the lower steel pipe section; one end of the extension plate is attached to the end, away from the lower steel pipe section, of the extension arm. The opening blocks are arranged on the side faces, facing the steel pipe piles, of the extension plates. The grouting mechanism comprises a grouting pipe, a grouting ring and a supporting ring, the supporting ring is arranged in the lower steel pipe section, the grouting ring is fixedly arranged on the supporting ring, a plurality of grouting nozzles capable of penetrating out of the nozzle holes are formed in the surface of the grouting ring, and the grouting pipe communicates with the grouting ring. The rock-socketed pile foundation is simple in structure, convenient to operate and suitable for being shallowly buried in a soft stratum.
本发明公开了一种适用于浅覆盖层的扩底钢管桩及其施工方法，属于桩基础工程技术领域，该扩底钢管桩包括钢管桩、扩底机构和灌浆机构；钢管桩自上而下分为上钢管段和下钢管段，下钢管段表面开设有若干个喷头孔；扩底机构包括若干扩展臂、撑开块和延长板，若干扩展臂均匀环设在所述下钢管段的侧壁上，其一端与下钢管段活动连接；延长板一端贴合设置在扩展臂远离所述下钢管段的一端；撑开块设置在延长板朝向钢管桩的侧面上；灌浆机构包括灌浆管、灌浆环和支撑环，支撑环设置在下钢管段内，灌浆环固设在支撑环上，且其表面开设有若干可穿出喷头孔的灌浆喷头，灌浆管与灌浆环连通。本发明结构简单，操作方便，适用于浅埋于软弱地层中的嵌岩桩基础。
Expanded-base steel pipe pile suitable for shallow covering layer and construction method of expanded-base steel pipe pile
The invention discloses an expanded-base steel pipe pile suitable for a shallow covering layer and a construction method thereof, and belongs to the technical field of pile foundation engineering. The expanded-base steel pipe pile comprises a steel pipe pile body, an expanded-base mechanism and a grouting mechanism; the steel pipe pile is divided into an upper steel pipe section and a lower steel pipe section from top to bottom; the base expanding mechanism comprises a plurality of expanding arms, an expanding block and an extension plate, the expanding arms are evenly and annularly arranged on the side wall of the lower steel pipe section, and one ends of the expanding arms are movably connected with the lower steel pipe section; one end of the extension plate is attached to the end, away from the lower steel pipe section, of the extension arm. The opening blocks are arranged on the side faces, facing the steel pipe piles, of the extension plates. The grouting mechanism comprises a grouting pipe, a grouting ring and a supporting ring, the supporting ring is arranged in the lower steel pipe section, the grouting ring is fixedly arranged on the supporting ring, a plurality of grouting nozzles capable of penetrating out of the nozzle holes are formed in the surface of the grouting ring, and the grouting pipe communicates with the grouting ring. The rock-socketed pile foundation is simple in structure, convenient to operate and suitable for being shallowly buried in a soft stratum.
本发明公开了一种适用于浅覆盖层的扩底钢管桩及其施工方法，属于桩基础工程技术领域，该扩底钢管桩包括钢管桩、扩底机构和灌浆机构；钢管桩自上而下分为上钢管段和下钢管段，下钢管段表面开设有若干个喷头孔；扩底机构包括若干扩展臂、撑开块和延长板，若干扩展臂均匀环设在所述下钢管段的侧壁上，其一端与下钢管段活动连接；延长板一端贴合设置在扩展臂远离所述下钢管段的一端；撑开块设置在延长板朝向钢管桩的侧面上；灌浆机构包括灌浆管、灌浆环和支撑环，支撑环设置在下钢管段内，灌浆环固设在支撑环上，且其表面开设有若干可穿出喷头孔的灌浆喷头，灌浆管与灌浆环连通。本发明结构简单，操作方便，适用于浅埋于软弱地层中的嵌岩桩基础。
Expanded-base steel pipe pile suitable for shallow covering layer and construction method of expanded-base steel pipe pile
一种适用于浅覆盖层的扩底钢管桩及其施工方法
YAO SAN (author) / LOU XUEQIAN (author) / LIU JIANQIANG (author) / SANG DENGFENG (author) / HU XINGHAO (author) / HUANG PENGFEI (author) / CHEN SHUPING (author) / LIAO QIANG (author)
2023-06-27
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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