Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for cast-in-situ bored pile
The invention discloses a construction method for a cast-in-situ bored pile. The construction method for the cast-in-situ bored pile is characterized in that mud properties are adjusted by utilizing an artificial chemical slurry making technology; a bit type of a special hob bit is adopted; the hob bit is provided with a guide ring; a steel bit and a hob are connected through bolts; the hob is 70 to 80mm high; the diameter of each bolt is 14mm; the surface of the steel bit is provided with two wear ribs; the steel bit is connected with a core tube through a flange; the diameter of the core tube is 100-110mm; the guide ring is arranged a position which is 2.5 to 3.0m above the bottom part of the hob bit; under the condition that hole depth is not greater than 35m, a mud circulation mode of direct circulation drilling is adopted; under the condition that the hole depth exceeds 35m, and a mud circulation mode of direct and reverse circulation combined drilling is selected according to footage speed.
Construction method for cast-in-situ bored pile
The invention discloses a construction method for a cast-in-situ bored pile. The construction method for the cast-in-situ bored pile is characterized in that mud properties are adjusted by utilizing an artificial chemical slurry making technology; a bit type of a special hob bit is adopted; the hob bit is provided with a guide ring; a steel bit and a hob are connected through bolts; the hob is 70 to 80mm high; the diameter of each bolt is 14mm; the surface of the steel bit is provided with two wear ribs; the steel bit is connected with a core tube through a flange; the diameter of the core tube is 100-110mm; the guide ring is arranged a position which is 2.5 to 3.0m above the bottom part of the hob bit; under the condition that hole depth is not greater than 35m, a mud circulation mode of direct circulation drilling is adopted; under the condition that the hole depth exceeds 35m, and a mud circulation mode of direct and reverse circulation combined drilling is selected according to footage speed.
Construction method for cast-in-situ bored pile
LUO HAIJUN (Autor:in)
29.07.2015
Patent
Elektronische Ressource
Englisch
Cast-in-situ bored pile water stop structure and cast-in-situ bored pile construction method
| Europäisches Patentamt | 2021