A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
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 (author)
2015-07-29
Patent
Electronic Resource
English
Cast-in-situ bored pile water stop structure and cast-in-situ bored pile construction method
| European Patent Office | 2021