Investigation of Earthquake Ground Motion for the Sloshing Performance Design of Ingound Storage Tanks.
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Accession number;01A0468321
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| Title;Investigation of Earthquake Ground Motion for the Sloshing Performance Design of Ingound Storage Tanks. |
| Author;
KAMIYA ATSUSHI
(Tokyogasu Seisangijutsubu)
WATANABE OSAMU
(Tokyogasu Seisangijutsubu)
OKAMOTO TAKASHI
(NKK Corp.)
NAGATA SHIGERU
(Kajima Inst. of Constr. Technol.)
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Journal Title;Journal of High Pressure Institute of Japan
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Journal Code:S0913A
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ISSN:0387-0154
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VOL.39;NO.2;PAGE.130-140(2001)
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| Figure&Table&Reference;FIG.9, TBL.3, REF.4 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Determining how liquids in storage tanks respond to seismic waves with relatively long period components is important for the tank design and safety operation. The Earthquake-Proof Design Code for High-Pressure Gas Manufacturing Facilities [The High Pressure Gas Safety Institute of Japan, 1980] (under the provisions of the High Pressure Gas Safety Law) was used to examine LNG sloshing in inground storage tanks. These standards prescribe that such storage tanks with resonant periods greater than 7.5 seconds shall be examined either by inputting three sinusoidal resonance waves with 60cm displacement caused by the ground motion of earthquake, or by a time history response analysis assuming specific seismic waves for the construction site. Although there are many previous studies on sloshing phenomena [Zama, 1993], researches on sloshing caused by earthquake ground motions is incomplete, and this makes determination of the motion and velocity response spectrum difficult in actual design of tanks against sloshing. The authors studied input earthquake ground motions, in relation to sloshing, to be inputted in the performance design of LNG inground storage tanks to be constructed in the Tokyo Bay area, Negishi and Ogishima in Yokohama, and Sodegaura in Chiba. The following methods were used: 1) time history response analysis of wave amplitudes by simulating past destructive earthquakes as prescribed in the current High Pressure Gas Safety Law; and 2) obtaining velocity response spectra from simulated earthquake ground motion in the Tokyo Bay area using a semi-empirical method [Takemura and Ikeura, 1988] that includes up to ten second periods and evaluating the application to the sloshing performance design. (author abst.) |
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