Research on the input ground motion and analysis of the floating-roofed oil storage tanks

浮顶储油罐输入地震动研究及分析

基本信息

批准号：
17560420
负责人：
INOUE Ryosuke
金额：
$ 2.3万
依托单位：
Ibaraki University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

项目摘要

During 2003 Tokachi-oki earthquake (M=8.0), many oil storage tanks in Tomakomai were damaged severely by sloshing due to long-period ground motion. In this research, we investigated the characteristics of the long-period ground motion and responses of the floating roofs of the oil tanks in order to mitigate such damages by future large earthquakes. The main results obtained are as follows:1) We examined the orbits of the ground velocities in the horizontal plain obtained by the K-net records in Yufutsu plain during the Tokachi-oki earthquake and its two large aftershocks, and found that the multi-directionality of ground motions at Tomakomai which is probably due to the 3-D heterogeneity of the underground structure.2) We processed the strong-motion accelerogram on the premises of IDEMITSU refinery at Tomakomai, and obtained very large PSV (h=0.5%) values.3) To obtain the long-period spectral level by the simplified semi-empirical method, we examined the prediction method proposed by K … More udo (1989) using many aftershock records of Tokachi-oki earthquake at around the K-net Tomakomai site, and suggested that the site amplification factor at the site is larger than the previous value (Zama,1998).4) Through the linearized fluid-elastic vibration analysis developed by Sakai et al., we investigated in detail the floating -roof sloshing behaviors taking into consideration of the existence of the elastic floating-roofs with single-deck type and double deck type. We conducted the parametric study to clarify which parameter affects mostly to the stresses in the pontoon.5) To prevent the buckling of the pontoon of the deck, we examined quantitatively the effects of the stiffeners and the rubber placed intermittently in the pontoon (a kind of isolation method ; Sakai and Inoue,2005) by ABAQUS, where we included geometrical and material nonlinearity.6) We proposed and examined a vibration control method of floating-roof sloshing by TLCD (Sakai et al.,1989) through the analysis of the interactive vibration between a floating-roof and contained liquid. Less

项目成果

期刊论文数量（22）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Vibration Control of Floating-roof Sloshing by TLCD.

TLCD 浮顶晃动振动控制。

DOI：
发表时间：
2007
期刊：
Proc.of Abstract of 62^<th> Annual Meeting of JSCE, (in Japanese) (to be published)
影响因子：
0
作者：
Fujikazu Sakai;Ryosuke Inoue
通讯作者：
Ryosuke Inoue

Sloshing behaviors and some recommendations on seismic design and isolation in floating-roofed tanks.

浮顶储罐的晃动行为以及抗震设计和隔离的一些建议。