Performance design criteria for concrete liquid containing structures

混凝土含液结构性能设计标准

• 批准号: 46690-2011
• 负责人: Kianoush, Reza
• 金额: $ 1.53万
• 依托单位: Ryerson University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=568987
• 关键词: Performance; design; criteria; concrete; liquid

Concrete liquid containing structures (CLCS) are considered as lifeline structures in which their use have become widespread in recent decades. Problems associated with liquid tanks involve many fundamental parameters. The dynamic behaviour of liquid tanks is governed by the interaction between fluid and structure as well as soil and structure along their boundaries. On the other hand, structural flexibility, tank configuration, and fluid properties are the factors which are of great importance in analyzing the tank behaviour. It has been found that hydrodynamic pressure in a flexible tank can be significantly higher than the corresponding rigid container. Currently, Canadian design standards do not directly address the structural design of these types of structures and this has led to inconsistency in design of such facilities. Also, many issues related to design of these structures have remained unresolved. There is a growing recognition of the importance of lifeline facilities and in particular CLCS and the need for substantial improvements in the design of such facilities. Careful design and detailing of such structures is necessary to meet the criteria for crack and leakage control. In recent years, the applicant has carried out extensive analytical and experimental studies on the behaviour of CLCS. The results have indicated that the current design approach do not represent the true behaviour of these types of structures. Also, there is a great deal of inconsistency among the design standards for this important broad class of structures. This is mainly due to the lack of understanding of the behaviour of these structures under static and seismic loading. The main objective of the proposed research study is to develop a rational design procedure, through analytical and experimental programs, for reinforced concrete tanks that assures a safe leak resistant structure. The concepts to water-tightness in liquid containing structures will be investigated. Segments from typical tank walls will be subjected to bi-axial static loading. The analytical study will be based on non-linear finite element method. Both rectangular and circular tanks of various dimensions will be considered in this study. It is intended to provide the necessary input for code decision making.

混凝土贮液结构（CLCS）被认为是生命线结构， 近几十年来变得普遍。与液体储罐相关的问题涉及许多基本参数。储液罐的动力特性取决于流体与结构以及土壤与结构边界之间的相互作用。另一方面，结构的灵活性，坦克的配置，和流体特性的因素是非常重要的，在分析坦克的行为。已经发现，柔性罐中的流体动压力可以显著高于相应的刚性容器。目前，加拿大的设计标准并不直接涉及这类结构的结构设计，这导致了这类设施的设计不一致。此外，与这些结构的设计有关的许多问题仍未得到解决。人们日益认识到生命线设施，特别是大陆架界限委员会的重要性，并认识到需要大幅度改进这些设施的设计。这种结构的仔细设计和细节是必要的，以满足裂缝和泄漏控制的标准。近年来，申请方对大陆架界限委员会的行为进行了广泛的分析和实验研究。结果表明，目前的设计方法并不代表这些类型的结构的真实行为。此外，对于这一重要的广泛类别的结构，设计标准之间存在很大的不一致性。这主要是由于缺乏对这些结构在静态和地震荷载下的行为的了解。拟议的研究的主要目标是开发一个合理的设计程序，通过分析和实验方案，钢筋混凝土罐，确保安全的防漏结构。将研究含液体结构的水密性概念。典型罐壁的节段将承受双轴静载荷。分析研究将基于非线性有限元法。本研究将考虑各种尺寸的矩形和圆形储罐。它旨在为代码决策提供必要的输入。