| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
The computer program for nonlinear sloshing analysis of floating-roofed cylindrical liquid storage tanks, developed under the support by the Grant-in-Aid for Scientific Research during 2012-2014, has been improved by employing the eccentric shell and beam elements to model the pontoon and stiffening members of the floating roof. The improved program has been applied to clarify the mechanism of failure of pontoon of single-deck floating roof observed during the 2003 Tokachioki earthquake. The effectiveness of the proposed method for stiffening the inner deck has been confirmed to restrain the occurrence of nonlinear oscillation modes that may cause the pontoon failure.
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