Hollow piling method for cast-in-place concrete
专利汇可以提供Hollow piling method for cast-in-place concrete专利检索，专利查询，专利分析的服务。并且PURPOSE: To decrease a processing volume of materials to be carried or displaced by a method wherein the inner part of a pile is made hollow to save a volume of use of concrete and sands and soils are back filled in the hollow part.
CONSTITUTION: Pile hole 1 is excavated up to a specified depth. Cylindrical frames 3 and 4 of small diameter are arranged at a center of section of the pile hole 1, and iron frame or cage 5 is installed in an annular clearance between the pile hole 1 and the cylindrical frames 3 and 4. The cylindrical frames 3 and 4 are made to be a double cylindrical structure covered with a thin walled cylindrical structure 4 having its leading end clogged at an outer circumference of the steel pipe 3. Tremie pipe 6 is inserted into an annular space of the pile hole 1, a floating of the cylindrical frame is restricted and concrete is fed into the hole while the Tremie pipe 6 is pulled up. Upon completion of curing of the concrete, the steel pipe is pulled off with the thin walled cylindrical body 4 being remained to complete a hollow pile. Into the hollow part is fed some excavated soil or mud.
COPYRIGHT: (C)1980,JPO&Japio，下面是Hollow piling method for cast-in-place concrete专利的具体信息内容。
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