Abstract:
PROBLEM TO BE SOLVED: To provide a soil testing device and a soil testing method capable of easily performing loading face treatment and load testing, and a compaction density management method enabling compaction density management to be performed by using a non-destructive method.SOLUTION: A soil testing device 1 comprises a self-propelled base machine 10, a support member 20 installed on the base machine 10, a loading face treatment machine 30 attached to the support member 20, and a load tester 40 attached to the support member 20. A soil testing method includes: a movement step for allowing the base machine 10 to run and move the soil testing device 1 to a test execution region; a face treatment step for executing surface treatment of a ground level by the loading face treatment machine 30 to form a loading face; a positioning step for making the loading face treatment machine 30 move along the support member 20 to retract it from on the loading face and making the load tester 40 move along the support member 20 to position it on the loading face; and a testing step for performing load testing by the load tester 40.
Abstract:
PROBLEM TO BE SOLVED: To obtain a foundation load testing method with which workability is improved while ensuring the settlement of a test version.SOLUTION: On a loading jack 20, a main girder 22 is installed via an upper pedestal 28. Both end portions 22A of the main girder 22 are coupled to a pair of a reaction pile 24 via a moving mechanism 30, respectively. The moving mechanism 30 comprises a movable carriage 32, a moving jack 34 and a reaction beam 36. The movable carriage 32 is hung from the both end portions 22A of the main girder 22 by a hanger 38. On the movable carriage 32, the reaction beam 36 is installed via the moving jack 34. The reaction beam 36 is coupled to a pile head 24A of the reaction pile 24 by an anchor 40. The upward movement of the reaction beam 36 is restricted by the anchor 40, and the moving jack 34 is capable of pressing the movable carriage 32 downward by using a reaction force to the reaction beam 36.
Abstract:
PROBLEM TO BE SOLVED: To provide a ground improvement body measuring instrument, used on a site of construction and simply investigating the forming state of a ground improvement body at a low cost. SOLUTION: A Swedish type sounding tester 1 equipped with a plurality of axially connected rods 11, the screw points 12 attached to the leading end sides of the rods 11 and the placing clamps 13 or cones 14 attached to the rods 11 in the vicinity of the rear end sides thereof is utilized. The ground improvement body measuring instrument 2 is equipped with: the male screw parts 21 attached to the leading end sides of the rods 11 so as to be capable of being replaced with the screw points 12; and a body 20 equipped with a plurality of electrodes 22 at a definite interval. The forming state of the column 5 formed in the ground is measured by the specific resistance between the electrodes 22. An obliquely notched recessed part 23 is formed to the upper part of the body 20 of the measuring instrument 2 and an electrode wire 24 is led out of the recessed part 23. COPYRIGHT: (C)2010,JPO&INPIT