Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction technology for long spiral cast-in-situ bored pile
Disclosed is a construction technology for a long spiral cast-in-situ bored pile. A specially-used pile casing device and a soil sampler are used, after a long spiral part is drilled and concrete is poured, residual soil mass can be removed, the residual soil can be prevented from falling into the concrete in the tripping process of a reinforcement cage, and thus the pile body quality cannot be affected. The technology comprises the steps that first, construction preparation, measuring and point release are carried out; second, a pile machine faces a hole, and a total-station instrument is calibrated; third, drilling is conducted so that the hole can be formed; fourth, a pile casing is tripped to be at the designed elevation; fifth, drilling is conducted at the design requirement depth; sixth, drilling is stopped, and thrown materials are lifted up; seventh, after the concrete liquid level is lifted to be at the elevation, a drill rod is lifted; eighth, the soil sampler is used for grabbing pile top dregs; ninth, the reinforcement cage is released in a penetrating mode; tenth, the reinforcement cage is vibrated to be sunken; eleventh, the front end of the rod is pulled out, and pile forming is completed; twelfth, post grouting construction is performed. The construction technology is suitable for various soil textures of clay, floury soil, miscellaneous fill and the like, and is also suitable for the complex geological conditions of soft soil, quick sand layers, sand and gravel layers, high underground water level positions and the like where collapsing and necking are likely to happen.
Construction technology for long spiral cast-in-situ bored pile
Disclosed is a construction technology for a long spiral cast-in-situ bored pile. A specially-used pile casing device and a soil sampler are used, after a long spiral part is drilled and concrete is poured, residual soil mass can be removed, the residual soil can be prevented from falling into the concrete in the tripping process of a reinforcement cage, and thus the pile body quality cannot be affected. The technology comprises the steps that first, construction preparation, measuring and point release are carried out; second, a pile machine faces a hole, and a total-station instrument is calibrated; third, drilling is conducted so that the hole can be formed; fourth, a pile casing is tripped to be at the designed elevation; fifth, drilling is conducted at the design requirement depth; sixth, drilling is stopped, and thrown materials are lifted up; seventh, after the concrete liquid level is lifted to be at the elevation, a drill rod is lifted; eighth, the soil sampler is used for grabbing pile top dregs; ninth, the reinforcement cage is released in a penetrating mode; tenth, the reinforcement cage is vibrated to be sunken; eleventh, the front end of the rod is pulled out, and pile forming is completed; twelfth, post grouting construction is performed. The construction technology is suitable for various soil textures of clay, floury soil, miscellaneous fill and the like, and is also suitable for the complex geological conditions of soft soil, quick sand layers, sand and gravel layers, high underground water level positions and the like where collapsing and necking are likely to happen.
Construction technology for long spiral cast-in-situ bored pile
WU SIYU (Autor:in) / ZHANG LINGYUN (Autor:in) / WU JIANBO (Autor:in) / SHI HUANHUAN (Autor:in) / YANG ZHUO (Autor:in)
17.06.2015
Patent
Elektronische Ressource
Englisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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