The impact of high strength, low ductility reinforcement on the ductility and serviceability of concrete structures

高强低延性钢筋对混凝土结构延性和使用性能的影响。由于澳大利亚最近引入了500兆帕钢筋(比以前可用的400兆帕钢筋具有更高的强度和更低的延展性)，钢筋混凝土结构的性能受到了不利影响。延性降低、挠度更大、裂缝宽度更大的结构将会出现。现在，意想不到的超载可能会导致钢材断裂，导致脆性和灾难性的坍塌。本项目旨在通过分析和试验研究新型钢筋对混凝土结构设计和性能(包括强度、延性和使用性能)的影响，为结构工程行业提供合理的设计指导。

The impact of high strength, low ductility reinforcement on the ductility and serviceability of concrete structures. The behaviour of reinforced concrete structures has been adversely affected by the recent introduction in Australia of 500 MPa steel reinforcement(with higher strength and lower ductibility than the previously available 400MPa steel bars). Structures with reduced ductility, greater deflection and larger crack widths will result. Unexpected overloads may now cause fracturing of the steel, resulting in brittle and catastrophic collapse. This project aims to investigate, analytically and experimentally, the impact of the new reinforcement on the design and performance of concrete structures, including strength, ductility and serviceability, and to provide rational design guidance to the structural engineering profession.