Assessment and repair of fatigued steel structures

疲劳钢结构的评估和修复

• 批准号: 170424-2011
• 负责人: Grondin, Gilbert
• 金额: $ 1.53万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=509020
• 关键词: Assessment; repair; fatigued; steel; structures

Many highway bridges currently in service in Canada were built in the 1950s when bridges were designed to permit lower demands than those permitted by current design standards. This bridge population represents over 40% of the highway bridges across Canada and a significant portion of these bridges may be structurally or functionally deficient. These bridges have been exposed to millions of load cycles from increasing volume and weight of truck traffic. As a result, Canadian highways have hundreds of bridges in need of being evaluated for possible repair or rehabilitation.

加拿大目前使用的许多公路桥梁建于20世纪50年代，当时桥梁的设计要求低于现行设计标准。这些桥梁数量占加拿大公路桥梁总数的40%以上，其中很大一部分桥梁可能存在结构或功能缺陷。这些桥梁已经暴露在数以百万计的负载周期，从增加的体积和重量的卡车交通。因此，加拿大的高速公路有数百座桥梁需要进行评估，以进行可能的维修或修复。