Structural strengthening and seismic retrofitting of corrosion-damaged concrete structures

腐蚀损坏混凝土结构的结构加固和抗震加固

• 批准号: RGPIN-2017-04278
• 负责人: ElRefai, AHMED
• 金额: $ 1.53万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=636103
• 关键词: Structural; strengthening; seismic; retrofitting; corrosion

Ductility of reinforced concrete (RC) structures is crucial in seismic regions. Previous research has shown that steel bars lose their ductility due to corrosion and abrupt failure may occur, thus jeopardizing the structure’s safety. With the wide use of composites in strengthening applications, concerns about the potential loss of section’s ductility after strengthening are raised due to the brittle nature of composites and their likely premature debonding.

在地震区，钢筋混凝土结构的延性是至关重要的。已有的研究表明，钢筋锈蚀会使钢筋失去延性，可能发生突然破坏，从而危及结构的安全。随着复合材料在加固应用中的广泛使用，由于复合材料的脆性和可能的过早剥离，人们对加固后截面延性的潜在损失表示担忧。