【作者】 高辉；

【导师】 赵金城；

【作者基本信息】 上海交通大学 ， 结构工程， 2007， 硕士

【摘要】 我国属于地震多发的国家,含液容器在地震作用下可能受到损坏,并且随之发生严重的次生灾害,给国家的财产带来巨大损失。所以对其进行地震动力响应分析和抗震性能评价,以采取必要的工程措施减轻直接和次生灾害具有重要的意义。在含液容器的抗震分析中,目前一般采用简化方法进行分析计算,虽然有限元数值分析也得到了一定程度的应用,但是由于自编计算程序在功能或规模上的限制而无法在工程设计中得到普遍的应用。本文结合上海交通大学海洋深水试验池的工程实例,采用大型通用有限元分析软件ANSYS对其进行了数值模拟和地震动力响应计算分析。目前国内外对于大型钢筋混凝土深水池的研究较为罕见,研究中水池材料多采用线性的本构关系,本文通过对混凝土和钢筋的本构关系进行等效处理以考虑材料非线性影响,采用ANSYS中的SHELL63和FLUID80单元,综合考虑水和水池池壁之间的相互作用。论文首先模拟了三个模型在水平惯性荷载、El-Centro地震波和正弦波下的反应来验证分析方法的可靠性;然后对深水池进行模态分析,得出水和池壁在不同液深条件下各自的自振频率及对应的振型。研究发现液深和池壁厚度的增加使池体自振频率降低,扶壁厚度和池体弹性模量的增加使池体自振频率升高;论文最后对深水池在不同地震波和液深下水体的晃动情况和更多还原

【Abstract】 Our country is a nation with high-frequency earthquakes, many liquid filled vessels may be damaged during earthquake. This will bring serious secondary disasters and economic loss, so it is meaningful to analyze its seismic dynamic response and seismic behavior to adopt necessary engineering measures to reduce its direct and secondary disasters.At present, the seismic analysis of liquid filled vessels is based on some simplified methods. Though some finite element numerical analysis has been performed before, it is hard to be widely applied in engineering because of the limitation of its functions and scales. In this thesis, the large-scale general finite element analysis software ANSYS is applied in numerical simulation and seismic response of the deepwater tank in Shanghai Jiaotong University.Researches in huge reinforced concrete deepwater tanks are rare, in which the constitutive relationship of materials of tanks is considered as linear. In the thesis, a combination between the strain-stress curve of steel bar and concrete is applied to take the non-linearity of materials into consideration. Considering the interaction between water and tank, the FLUID80 and SHELL63 elements in ANSYS are used. Firstly, analysis of更多还原