大型浮放储罐三维地震动响应分析

英文篇名：Seismic Response Analysis of Large-scale Unanchored Tank under Three Dimensional Excitation
中文刊名：大连民族学院学报
英文刊名：Journal of Dalian Nationalities University
作者：孙建刚 ; 张亮 ; 赵晓磊
英文作者：SUN Jian-gang1 ; ZHANG Liang2 ; ZHAO Xiao-lei2(1.Colleg of Architecture & Civil Engineering ; Dalian Nationalities University ; Dalian Liaoning 116605 ; China ; 2.College of Architecture & Civil Engineering ; Daqing Petroleum Institute ; Daqing Heilongjiang 163318 ; China)
中文关键词：浮放储罐 ; 有限元 ; 轴向应力 ; 三维地震 ; 环向应力
英文关键词：unanchored tank ; FE ; axial stress ; three dimensional excitation ; hoop stress
出版日期：2009-01-15
机构：大连民族学院土木建筑工程学院;大庆石油学院土木建筑工程学院;
年：2009
期：01
出版单位：大连民族学院学报

摘要

以15×104m3浮放储罐为例,应用ADINA有限元软件,采用弹簧单元模拟地基,在三维地震激励下分析储罐的地震动响应。结果表明,沿着罐壁的高度方向加速度具有放大效应,且场地越软储罐罐壁加速度放大响应越小;液体晃动波高越大,基底剪力越大。按照水平地震激励计算的液体晃动波高和基底剪力较三维地震动计算结果偏小,因此建议储罐设计时要考虑多维地震动的影响。
The seismic response of 15×104m3 unanchored tanks under three dimensional excitation is analyzed by ADINA finite element technique using spring element to simulate the foundation.The results show that: the acceleration increases along the height of tank wall;as the site turning softer,the acceleration turning smaller; liquid sloshing heights turning bigger;base shear force turning bigger.The sloshing height and the bottom plate shear force calculated by the formula of tank code are a little smaller compared to the results from three dimension excitation by FE technique,so we should consider multi-dimensional excitation for the seismatic design of tanks.

引文

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