Response of Concrete Containment Structures Considering Soil-Structure Interaction Effects

为了理解和用数值方法描述土-结构相互作用（SSI）效应，人们在过去做了大量的努力。在这项研究中，特别感兴趣的是适当地分析和设计与周围土壤相互作用的地下围护结构。当小型模块反应堆（SMR）位于地下的安全壳结构中时，这一点尤为重要。安全壳结构的任何损坏都可能对SMR产生重大影响。在这些结构中，出于功能性原因，裂缝和泄漏控制是主要的设计考虑。在拟议的研究中，需要确定土壤的存在如何影响安全壳结构的动态响应。在这种关系下，需要确定确定与地上结构相关的响应修正系数的基本原理方法。在本次调查中，主要问题是由于不同的负载应用（包括地震），安全壳脆弱区域的裂缝发展。需要考虑这些结构中的裂纹泄漏潜力。目前的设计规范和标准没有解决这个问题，这是留给设计工程师保守地考虑它在他们的设计。这是一个需要详细调查的领域。本文的主要目的是研究地下混凝土安全壳结构的动力特性。该研究将使用严格的有限元（FE）方法进行，该方法能够包括土-结构相互作用的影响，同时考虑三维（3D）域中的几何和材料非线性。在这项研究的过程中，将进行调查，以确定如何不同的土壤类型中定义的buildingcodes影响这种结构的动态响应。

A great deal of effort has been made in the past in order to understand and numerically formulate thesoil-structure interaction (SSI) effect. Of particular interest in this study is to appropriately analyze and designcontainment structures which are built underground that interact with the surrounding soil. This is of particularsignificance when small module reactors (SMR's) are hosted in a containment structure that is builtunderground. Any damage to the containment structure could have significant consequences on SMRs. Inthese structures, for functionality reasons, crack and leakage control is of prime design consideration. In theproposed study, it is required to determine as how the presence of the soil can affect the dynamic response ofthe containment structures. In this relation, a rationale method to determine the response modification factors inrelation to above ground structures will need to be determined. In this investigation, the major issues are thedevelopment of cracks in the vulnerable regions of the containment due to different loading applicationsincluding seismic. The crack-leakage potential in in these structures needs to be considered. Current designcodes and standards do not address this issue and it is left to design engineers to conservatively consider it intheir design. This is an area that requires a detailed investigation. The main objective of this research is toinvestigate the dynamic behavior of underground concrete containment structures. The study will be carried outusing a rigorous finite element (FE) method capable of including the effect of soil-structure interactionconsidering both geometric and material non-linearities in a three-dimensional (3D) domain. During the courseof this study, an investigation will be carried out to determine how different soil types as defined in buildingcodes affect the dynamic response of such structures.