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1、 硕士学位论文硕士学位论文 十万立方米储油罐动力响应数值模拟分析 NUMERICAL SIMULATION ANALYSIS OF DYNAMIC RESPONSES OF THE 100,000 CUBIC METER LIQUID-STORAGE TANK 梁明阳梁明阳 哈尔滨工业大学哈尔滨工业大学 2013 年年 6 月月 国内图书分类号：O382，TU375 学校代码：10213 国际图书分类号：624 密级：公开 工学工学硕硕士学士学位论文位论文 十万立方米储油罐动力响应数值模拟分析 硕 士 研 究 生 ： 梁明阳 导师 ： 王 伟 教授 申 请学位 ： 工学硕士 学科 ： 工程力学
2、 所 在 单 位 ： 土木工程学院 答 辩 日 期 ： 2013 年 6 月 授予学位单位 ： 哈尔滨工业大学 Classified Index: O382,TU375 U.D.C: 624 Thesis for the Master Degree in Engineering NUMERICAL SIMULATION ANALYSIS OF DYNAMIC RESPONSES OF THE 100,000 CUBIC METER LIQUID-STORAGE TANK Candidate： Liang Mingyang Supervisor： Prof. Wang Wei Academic
3、Degree Applied for： Master of Engineering Speciality： Engineering Mechanics Affiliation： School of Civil Engineering Date of Defence： June, 2013 Degree-Conferring-Institution： Harbin Institute of Technology 哈尔滨工业大学工学硕士学位论文 - I - 摘 要 石油作为一种能源储备深刻地影响工业生产的各个领域，储油罐作为储存石油的结构，其研究的重要性也非同一般，而 10 万立方米常压立式浮顶储
4、油罐是我国现今应用最为广泛的一种。储油罐在地震作用下，罐体会产生很大的位移、应力等响应，严重的会导致罐体破坏，引发一系列的直接灾害和次生灾害。储油罐已有较长的研究历史，已经取得很多宝贵的研究成果，然而由于罐体结构的研究涉及到薄壁壳结构、流固耦合等诸多方面，结构形式比较复杂，单纯的振动台试验由于结构无法完全按照相似定理进行，致使试验的很多效果并不能完全反应结构真实状态响应，因此很多研究内容诸如长周期地震波液体晃动响应等，还不能准确地给出解析公式。计算机技术特别是计算机仿真技术近年的发展为储油罐的研究提供了新的途径，振动台试验与数值模拟相结合的方式已成为这一领域研究方法的主流，数值方法的加入使得研
5、究更加准确。 本文采用 ANSYS 软件，结合哈尔滨工业大学吴明硕士储油罐三向振动台试验，以试验缩尺模型罐和工程中的原型罐为研究对象，主要开展了以下工作： 1. 采用 ANSYS 软件建立与三向振动台试验尺寸完全相同的试验模型罐有限元模型， 进行模型罐模态分析， 以振动台进行的一种工况 （三向 0.2gEl Centro波）为例，对比模型和振动台试验的诸如加速度、应变等响应，比较全面地验证有限元模型的可靠性； 2. 应用试验模型罐有限元模型对基础在不同区域形式不均匀沉降下罐体的响应和液体在长周期地震波作用下液体晃动波高两项重要内容进行研究，给出其分布规律； 3. 沿用试验模型罐建模思路，建立实
6、际尺寸的 10 万立方米储油罐有限元模型，以 0.2gEl Centro 波代表 8 度设防地震，以 0.4gEl Centro 波代表符合国外地质条件 8 度设防罕遇地震，以 0.4g 卧龙波代表符合我国地质条件 8 度设防罕遇地震进行原型罐三向地震动模拟，分析罐体响应，得到各种响应的分布规律； 4. 应用原型罐有限元模型对基础在不同区域形式不均匀沉降下罐体的响应和液体在长周期地震波作用下液体晃动波高进行细致地研究，指出罐体的薄弱区域，并对预防和解决类似原因导致的结构破坏提出建议。 关键词：关键词：储油罐；地震响应；长周期晃动波高；环形区域基础沉降哈尔滨工业大学工学硕士学位论文 - II -
7、 Abstract As anenergy reserve, petroleum has profound influence on every field of the industry production. Thus, research on the oil storage tank has important meaning as a oil storage structure. The 100 thousand cubic meter ambient pressure vertical floating roof liquid-storage tank is the most wid
8、ely used storage tank type in our country. Significant response such as displacement and stress will be induced to the oil storage tank under the action of earthquake. The destruction of the tank will be resulted in some serious siutation, leading to a series of direct and secondary disasters. Resea
9、rch on the oil storage tank has a relative long history. And many research achievements have been obtained. However, research on the tank structure involves many aspects like the thin-talled shell structure and fluid-solid coupling. The structure form is complicate to some extent. Also the shaking t
10、able test could not be conducted since that the similarity theorem can not be fully satified . As a result, many results of the shaking table test could not completely reflect the response of the structure under actical working condition. Therefore, solution and formula for many research contents su
11、ch as the long period sloshing wave height could not be presented. Development of the computer technology, especially the computer simulation technology, supplies a novel approach for research on the oil storage tank. Methods combining the shaking table test and the numerical simulation have become
12、the main research method in this field. The affiliation of the numerical method makes the research more accurate. Based on the above description, combining with the three-dimension shaking table test conducted by the Master Wu Ming of Harbin Institute of Technology and using the ANSYS software, this
13、 thesis performed the following research work on the reduced size model tank and the full size tank in real project: 1. Build the finite element (FE) model of the model tank which has the same size with that of the three-dimension shaking table test using the ANSYS software, perform modal analysis,
14、compare responses such as diaplacement and strain of the FE model and the shaking table test model under a work condition sample of the shaking table test (three-dimension El Centro seismic excitation with acceleration of 0.2g), and completely verify the reliability of the FE model; 2. Using the FE
15、model of the model tank to research on two important aspects, response of the tank subjected to non-uniform settlement of different area form and the sloshing wave height under the action of the long period earthquake wave, qualitatively give the corresponding distribution law; 3. Following the mode
16、l build idea mentioned in the prior part, build the FE 哈尔滨工业大学工学硕士学位论文 - III - model of the 100 thousand cubic meter liquid-storage tank with the real size, conduct the seismic simulation of the FE model of the full size tank subjected to the precautionary earthquake represented by the 0.2g El Centro record, the rare earthquake of the foreign geological condition represented by
