Coupled effects of stress and temperature changes on concrete structures

应力和温度变化对混凝土结构的耦合影响

• 批准号: DP220103362
• 负责人: A/Prof Vinh Dao
• 金额: $ 15.91万
• 依托单位: The University of Queensland
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2022
• 资助国家: 澳大利亚
• 起止时间: 2022-04-06 至 2025-04-05
• 项目状态: 未结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP220103362
• 关键词: Coupled; effects; stress; temperature; changes

The coupled effects of stress and temperature changes that concrete structures are commonly subject to are significant and need to be properly accounted for. However, existing engineering models accounting for these effects remain essentially empirical, necessarily limiting their predictive capability. This research aims to examine such coupled effects using an innovative approach combining original physical-based analytical study with novel tests and advanced numerical work. Expected outcomes include a robust yet simple engineering model, and guidelines for rational design of structures (incl. concrete spalling in fire) with due account for such coupled effects, thereby enabling to achieve more robust structures at substantial cost saving.

混凝土结构通常受到的应力和温度变化的耦合效应是显着的，需要适当考虑。然而，现有的工程模型占这些影响仍然基本上是经验性的，必然限制其预测能力。本研究旨在使用一种创新的方法，将原始的基于物理的分析研究与新颖的测试和先进的数值工作相结合，来研究这种耦合效应。预期成果包括一个强大而简单的工程模型，以及合理设计结构（包括）的指导方针。火灾中的混凝土剥落），并适当考虑这种耦合效应，从而能够以大量的成本节省实现更坚固的结构。