PILE TOP TREATING METHOD OF CAST-IN-PLACE PILE USING NONDESTRUCTIVE MEASUREMENT AND PILE TOP TREATING DEVICE OF CAST-IN-PLACE PILE USED IN THE TREATING METHOD

摘要

PURPOSE: To enhance workability by measuring and storing the position of the reinforcement of a reinforced concrete head part by means of nondestructive examination, and also by controlling an extra-high pressure water injection device through personal computer communication, so that the extra-banking concrete can be crushed. ;CONSTITUTION: The head part of a reinforced concrete 9 such as a continuous underground wall or a cylindrical foundation pile is chipped away little by little, and the positions of reinforcing bars 11 are measured by using a nondestructive measuring device 2 by means of ultrasonic wave, radiation, magnetism, electromagnetic induction, or the like. Then, the measured value is stored in a buffer memory 3, and also is connected to a personal computer 1 for transmitting it to a monitor 4 through a communication circuit 12. Then, while being subjected to picture image processing, the positions of the concrete and the reinforcing bars 11 are confirmed. Further, an extra-high pressure water injection device 6 is controlled by a control unit 5, and the extra-banking concrete is crushed by the extra-high pressure water. Furthermore, a water repellent is coated on the part where the reinforcing bars 11 are connected to the upper structure, so that the separation of concrete can be facilitated. Thus, the positions of the reinforcing bars can be detected without requiring skill, and the work efficiency can be enhanced.;COPYRIGHT: (C)1996,JPO