METHOD OF CONSTRUCTING SOIL IMPROVING COMPOSITE FOUNDATION AND ITS FOUNDATION

摘要

PROBLEM TO BE SOLVED: To prevent the reduction in shearing strength and liquefaction preventing effect by continuously moving a ditching device formed of an endless chain having cutting and stirring claws protruded thereon to form a soil improved body into a wall having a fixed thickness in the width direction. ;SOLUTION: A cutter post 2 is moved horizontally along a frame 6 by a hydraulic cylinder loaded on a base machine 5 with the base machine 5 as reaction, and circulating cutting and stirring claws 4 laid on the circumference of the cutter post 2 mix a solidifying material with the excavated soil while excavating the ground in groove shape to improve the soil. An excavating device 1 is continuously moved to construct a wall-like soil improved body 7 having a fixed thickness in the width direction. Therefore, a problem of central dislocation and formation of clearance when the columnar soil improved body is continued in wall shape can be solved, and the reduction in shearing strength and liquefaction preventing effect can be avoided.;COPYRIGHT: (C)1998,JPO