The implications of low-ductility reinforcement and strain localisation on the strength and ductility of reinforced concrete two-way slabs

低延性钢筋和应变局部化对钢筋混凝土双向板强度和延性的影响

• 批准号: DP0558370
• 负责人: Em/Prof Raymond Gilbert
• 金额: $ 69.53万
• 依托单位: The University of New South Wales
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2005
• 资助国家: 澳大利亚
• 起止时间: 2005-08-22 至 2011-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0558370
• 关键词: implications; low; ductility; reinforcement; strain

In the design of reinforced concrete structures, ductility is an important requirement, providing warning of failure, redistribution of internal actions at overloads and justification of many of the assumptions made in structural analysis and design. The recent introduction in Australia of low-ductility, deformed welded wire fabric reinforcement (Class L) has resulted in concrete slabs with relatively brittle failure modes and its use has been the subject of much debate. This research will investigate the ductility of two-way slabs containing Class L mesh and the applicability of established design procedures. It will lead to safer and better performing r.c. floor systems and, if necessary, new ductility specifications for Class L steel.

在钢筋混凝土结构的设计中，延性是一项重要的要求，它提供了破坏警告、超载时内部作用的重新分配以及结构分析和设计中所作的许多假设的合理性。最近在澳大利亚引入的低延性、变形焊接钢丝网钢筋（L类）导致混凝土板具有相对脆性的破坏模式，其使用一直是争论的主题。本研究将探讨含L类网格的双向板的延性和已建立的设计程序的适用性。这将导致更安全和更好的表现r.c.楼板系统，以及如有必要，L级钢的新延性规范。