PRACTICAL APPLICATION OF THEORY OF SEISMIC SLOSHING IN LARGE-CAPACITY LIQUID STORAGE TANKS TAKING ACCONT OF NONLINEARITIES DUE TO LIQUID AND FLOATING ROOF

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560702
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Building structures/materials
• Research Institution: Nagoya Industrial Science Research Institute
• Principal Investigator: MATSUI TETSUYA 公益財団法人名古屋産業科学研究所, その他部局等, 研究員 (70023083)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: シングルデッキ型浮屋根 / 非線形スロッシング / 構造‐流体連成作用 / 長周期地震動 / 非線形振動 / ポンツーン座屈 / 耐震補強

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.

Free Research Field

工学