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1. 发明专利

JP2001098547A TRIAXIAL DRIVING DEVICE AND PRODUCING METHOD FOR SOIL CEMENT COMPOSITE PILE BY USING TRIAXIAL DRIVING DEVICE 失效
公开(公告)号：JP2001098547A
公开(公告)日：2001-04-10
申请号：JP2000231719
申请日：2000-07-31
申请人： MARUGO FOUNDATION CORP
发明人： HIRAMI SHIGERU
IPC分类号： E21B7/20 , E02D5/46 , E02D7/00 , E21B10/32
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a soil cement composite pile composed of soil cement and a hollow tube in the ground by using a triaxial driving device capable of smoothly pushing the hollow tube in the ground. SOLUTION: A triaxial driving device constituted of a lifting stand body 1, a lifting frame 13, an inner tube driving device, an outer tube driving device and a hollow tube driving device and constituted so as to be capable of respectively independently optionally setting the rotational direction and a rotating speed of the respective driving devices is used, excavating agitating blades 23, 24, 25, 34, 35, 36 are respectively installed in an inner tube 2 and an outer tube 3 for constituting a double tube type rod, a hardenable material is injected and agitated in excavating earth in a pile hole while excavating the ground, and after being excavated up to the prescribed depth by pushing in a hollow tube 4, the double tube type rod is pulled out of the hollow tube 4, and the hollow tube is left in the ground to produce a soil cement composite pile.

2. 发明专利

JP2001098543A SOIL CEMENT COMPOSITE PILE PRODUCING DEVICE 失效
公开(公告)号：JP2001098543A
公开(公告)日：2001-04-10
申请号：JP2000103177
申请日：2000-04-05
申请人： MARUGO FOUNDATION CORP
发明人： HIRAMI SHIGERU , KOJIMA MASARU , AOKI KENZO
IPC分类号： E21B10/32 , E02D5/46
摘要： PROBLEM TO BE SOLVED: To provide a soil cement composite pile producing device capable of improving workability without using a shear pin for temporarily fixing an excavating blade in a state of extending in the circumferential direction from an outer diameter of a hollow pipe. SOLUTION: In a soil cement composite pile producing device where the excavating blade 2A extended in the circumferential direction from the outer diameter of a hollow pipe 4 from the lower end of the hollow pipe 4 is swingably arranged via shaft 22 on a bracket 23 projected in a lower end outer peripheral part of a rod 1 in a lower part of the rod 1 inserted into the hollow pipe 4 to excavate the ground up to the prescribed depth in a state of holding an extending state of the excavating blade 2A by a temporarily fixing tool 3, and when pulling up the rod 1 in the hollow pipe 4 after producing a soil cement composite pile, the excavating blade 2A is swung/ diametrically contracted by abutting to the lower end of the hollow pipe 4 to pass through into the hollow pipe 4, the temporarily fixing tool 3 is locked on a locking part 20t formed on the excavating blade 2A by a locking member 32 installed on a bracket 23 and energized by spring pressure, and locking of the locking part 20t is released by abutting force of a preset value or more of the lower end of the hollow pipe 4 to the excavating blade 2A.

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