@ ŒfÚŽGŽi˜ajF “ú–{’nkHŠwƒVƒ“ƒ|ƒWƒEƒ€˜_•¶W VolF 9-2Šª ”NF 1994”N •ÅF 1393-1398•Å ’˜ŽÒi˜ajF ÌŒ´ —Ljê, •àV “ž, ˜aò ³“N, ˆÉ•” K”ü, Îì ‰Ã’ ƒ^ƒCƒgƒ‹i˜ajF –„“y‚Æ‚ÌŠÔ‚É”—£‚̶‚¶‚é’n”Ոꌚ‰®‘ŠŒÝì—pU“®‘䎎Œ±(Œ´Žq˜FŒš‰®‚Ì–„ž‚Ýk“®Œø‰ÊŽŽŒ±j ´˜^i˜ajF
- ƒL[ƒ[ƒhi˜ajF - ŒfÚŽGŽi‰pjF PROCEEDINGS OF THE JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM ’˜ŽÒi‰pjF Ryoichi SHOHARA, Itaru KUROSAWA, Masanori lZUMI, Yukimi lBE, Yoshitata ISHIKAWA ƒ^ƒCƒgƒ‹i‰pjF SHAKING TABLE TEST OF SSI PRODUCING SEPARATION BETWEEN FOUNDATICN AND BACK-FILL (EMBEDMENT EFFECT TEST ON REACTOR BUILDING) ´˜^i‰pjF
A series of SSI tests was carried out using sawdust as non-linear back-fill material. Other part of ground model is made of silicone rubber that behaves elastically Seismic wave excitation tests were performed by shaking table, and the change of response due to the increase input accelerations was examined. To simulate the separation between the back-fill and the foundation during the tests, it is assumed in axisymmetric FEM analytical model that no contact is taken for the back-fill part with the foundation from the ground surface to equivalent depth. The changes in response characteristics due to the non-lineariry of tbe back-fill can be assessed satisfactorily. ƒL[ƒ[ƒhi‰pjF - ‹LŽ–‹æ•ªF - ‹æ•ª @@@ˆÏˆõ‰ï˜_•¶W