Structural performance evaluation of industrial floor slabs using Fiber Reinforced Concrete (FRC) through analytical and experimental investigation

通过分析和实验研究评估使用纤维增强混凝土（FRC）的工业楼板的结构性能

• 批准号: 565049-2021
• 负责人: Kianoush, Reza
• 金额: $ 1.62万
• 依托单位: Ryerson University
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=722178
• 关键词: Structural; performance; evaluation; industrial; floor

The Canadian construction market has been heavily influenced by industrial/commercial construction in recent years. The concrete slab-on-grade construction in most industrial applications is generally designed to avoid limitations in the future flexibility of most industrial buildings, resulting in design solutions that rely on the volume of structural material to resolve potential future capacity deficiencies. In such structures cracking is quite common and many of these slabs start developing the first signs of cracking only after a few years of being in service. Such cracking is either load-related (i.e. weakened subgrade, too little slab thickness, overloading) or attributable to temperature or environment (i.e. shrinkage), or is caused by a combination of these factors. In this research, the use of fiber reinforced concrete (FRC) over conventional concrete as a potential solution to overcome structural capacity, durability, and cracking problems in industrial floor systems will be studied through several experimental and numerical case studies. A good understanding of the behaviour of these structures is necessary in order to meet design objectives, while containing construction and maintenance costs. The goal is to improve the concrete technology and to provide engineers with practical design guidelines in an effort to introduce a superior design solution. The main objective is to investigate if the proper choice of a newly developed material such as FRC could lead to a superior and more efficient structural performance in the vulnerable regions of large industrial floors, as compared to the customary concrete material typically used in today's practice. The study involves testing plain and FRC slab and beam specimens subjected to a monotonic loading condition. A state-of-the-art numerical model will also be developed to simulate the experimental program for parametric studies. It is expected that this research program will provide a useful framework to better understand the behavior of large concrete industrial floor systems under a wide range of applicable design criteria. This framework will be useful towards the development of practical design guidelines for these structures and beneficial to the Canadian economy.

近年来，加拿大建筑市场受工业/商业建筑的影响很大。在大多数工业应用中，混凝土板层的结构通常旨在避免大多数工业建筑的未来灵活性的限制，从而产生了依赖结构材料量的设计解决方案，以解决潜在的未来能力不足。在这样的结构中，破裂很普遍，其中许多平板仅在服役几年后才开始开发破裂的第一个迹象。这种裂缝要么与负载相关（即弱化的亚地区，平板厚度过多，超载）或归因于温度或环境（即收缩），要么由这些因素的组合引起。在这项研究中，将通过几项实验性和数值案例研究研究，将纤维钢筋混凝土（FRC）用作克服结构能力，耐用性和破裂问题的潜在解决方案。为了实现设计目标，必须很好地理解这些结构的行为，同时包含建筑和维护成本。目的是改善具体技术，并为工程师提供实用的设计指南，以介绍出色的设计解决方案。主要目的是调查与当今惯例通常使用的习惯混凝土材料相比，在大型工业层的脆弱区域的适当选择（例如FRC）是否会导致较大的大工业地板脆弱区域的卓越，更有效的结构性能。该研究涉及测试经历单调载荷条件的平原和FRC平板和梁样品。还将开发最新的数值模型来模拟参数研究的实验程序。预计该研究计划将提供一个有用的框架，以更好地了解在广泛的适用设计标准下大型混凝土工业地板系统的行为。该框架将有助于制定这些结构的实践设计准则，并对加拿大经济有益。