Pulling pulling out ON test method of the pad post and the pulling pulling out test equipment null which is used for

摘要

PURPOSE: To make the pull-out yield strength of a driven precast pile judgeable in a state of conforming to the real situation. ;CONSTITUTION: A pull-out jack 5 is installed in each upper part of both first and second support member 1a, 1b being attached tight to a support pile while a compressing jack 6 is installed in the lower part, and a first pressure receiving member 3 receiving driving force of the pull-out jack 5 is connected to a second pressure receiving member 6, receiving the driving force of the compression jack 6 while being solidly connected to a driven precast pile 10 so as to be solidly displaced. In succession, pull-out load by the pull-out jack 5 and compression load by the compression jack 6 both are repeatedly loaded on the driven pile 10, and an amount of displacement in the driven pile attending on this loading is measured, from which the extent of pull-out yield strength is judged.;COPYRIGHT: (C)1994,JPO&Japio