Earthquake response characteristics of experimental fast reactor 'JOYO' on quaternary ground, (1)

It is important to establish ground surveying and testing methods when large important structures are constructed on quaternary ground. Various methods for surveying and testing from surface ground were carried out at the site of Experimental Fast Reactor 'JOYO' which is deeply embedded in compacted sand and granular quaternary ground. The following methods were mainly carried out. (1) Penetration test: Standard penetration test, Large scale penetration test, Static corn penetration test (2) Surface elastic wave exploration: P.S wave exploration in boring hole, Shallow seismio reflection method, Sonic wave exploration (3) Boring wall pressure test (4) Boring wall shear test (5) Undisturbance core sampling (6) Laboratory dynamic triaxial tests. The reliance of above surveying and testing methods were studied and the improvement in future were clarified. (author)