Œf�ÚŽGŽ��i˜a�j�F
“ú–{’n�k�HŠwƒVƒ“ƒ|ƒWƒEƒ€�u‰‰�W
Vol�F
6Šª
”N�F
1982”N
•Å�F
1593-1600•Å
’˜ŽÒ�i˜a�j�F
-
ƒ^ƒCƒgƒ‹�i˜a�j�F
-
|
�´˜^�i˜a�j�F
-
|
|
ƒL�[ƒ��[ƒh�i˜a�j�F
-
|
Œf�ÚŽGŽ��i‰p�j�F
PROCEEDINGS OF JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM
’˜ŽÒ�i‰p�j�F
Hitoshi SEYA, Gengo MATSUI
ƒ^ƒCƒgƒ‹�i‰p�j�F
CIRCUMEFRENTIAL HIGHER MODE RESPONSE OF SHELL TO SEISMIC WAVES
|
�´˜^�i‰p�j�F
Circumferential higher modes are excited when a large shell structure with a ring foundation is subjected to spatially variant seismic waves. First, we ascertain the response of a ring foundation which rests directly on a semi-infinite elastic medium. The displacement function of the soil is evaluated by the analytical solution of a 3-D wave equation. And on the assumption obtained from the ring analysis, the response of shell is evaluated by the modal method. To analyse the higher modes response, the method, using a pseudostatic displacement which should be calculated from the bottom boundary, is presented. As an example, the response of a cooling tower subjected to an incident seismic wave with a constant velocity is discussed.
|
|
ƒL�[ƒ��[ƒh�i‰p�j�F
-
|
‹LŽ–‹æ•ª�F
-
‹æ•ª
�@�@�@ˆÏˆõ‰ï˜_•¶�W