�@ Œf�ÚŽGŽ��i˜a�j�F “ú–{’n�k�HŠwƒVƒ“ƒ|ƒWƒEƒ€�u‰‰�W Vol�F 4Šª ”N�F 1975”N •Å�F 575-582•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 Setsuo NODA, Tatsuo UWABE ƒ^ƒCƒgƒ‹�i‰p�j�F RELATION BETWEEN SEISMIC COEFFICIENT AND GROUND ACCELERATION FOR GRAVITY QUAYWALL �´˜^�i‰p�j�F
According to the present design standard for port and harbor structures, the seismic coefficients corresponding to the severity of ground motions were obtained for 129 gravity quaywalls in 49 ports damaged by 12 earthquakes. The maximum ground accelerations in the ports were estimated by calculating the ground response during the earthquake with reference to the attenuation curves of the base rock accelration based on the accelerograms In port area. The seismic coefficients in the past earthquakes were up to 0.25, and the upper limit of the relation between the coefficient and the maximum ground acceleration was expressed by the following equation. l l oe �¡ where, �¡ : seismic coefficient �¡ : maximum ground acceleration (gal) g : gravitational acceleration (gal) ƒL�[ƒ��[ƒh�i‰p�j�F - ‹LŽ–‹æ•ª�F - ‹æ•ª �@�@�@ˆÏˆõ‰ï˜_•¶�W