Development of design rules for repair of corroded steel beams using BFRP wrap

加拿大是一个幅员辽阔的国家，加拿大城镇之间的连接是通过我们位于这些高速公路和道路上的巨大的道路、高速公路和桥梁网络实现的。其中许多桥梁是在50多年前建造的，因此，这些桥梁要么超过了设计使用寿命，要么即将达到使用寿命的尽头。这些桥梁中的许多都是用钢梁建造的，钢梁遭受了腐蚀破坏，这是令人不快但不可避免的。因此，这些桥梁中的许多被认为是结构缺陷的，其中一些被认为是结构不安全的。立即采取行动修复和修复这些桥梁，对恢复这些桥梁并使其继续使用至关重要。如果做不到这一点，像蒙特利尔牧师大桥几乎坍塌这样的可怕事件可能会在全国许多其他桥梁上发生。这项研究计划是精心设计的，旨在制定修复钢梁和因腐蚀而损坏的钢梁的设计规则，使用新兴的、易于粘贴的绿色玄武岩纤维缠绕。该项目将开发的维修和修复新技术将是一种绿色、廉价的解决方案，易于在现场应用，并且不会或最大限度地减少对交通的干扰。这项工作将包括大量的全尺寸实验室测试，详细的非线性有限元分析，以及详细的参数研究，然后制定设计规则。这项工作计划在达斯博士的指导下，由1名博士生、1名博士后研究员和3名本科生在42个月内执行和完成。这项研究的结果将有助于将更换老化桥梁和可能其他类似基础设施的腐蚀梁所需的不切实际的资金需求降至最低。此外，将在该项目中培训的高素质人员将能够减少建筑业以及市级和省级机构所需的熟练劳动力短缺。

Canada is a vast country and connectivity among the cities and towns of Canada is achieved by our huge network of roads, highways, and bridges located on these highways and roads. Many of these bridges were built more than 50 years ago and thus, these bridges either passed their designed service life or will soon reach the end of their service life. Many of these bridges are built with steel girders which have suffered corrosion damages which are unpleasant but unavoidable. As a result, many of these bridges are considered structurally deficient and some of them are considered as structurally unsafe. Immediate action in terms of repair and rehabilitation of these bridge girders is paramount to restore these bridges and keep them in service. Failing to that, scary incident like almost crumbling Chaplain Bridge in Montreal can occur in many other bridges across the country. This research program is carefully designed to develop design rules for repair of steel beams and girders damaged by corrosion using emerging and green easy-to-apply basalt fibre wraps. The new repair and rehabilitation technique that will be developed in this project will be a green and cheaper solution, easy-to-apply in the field, and no or minimum interruption to traffic flow. This work will involve a large number of full-scale lab tests, detailed non-linear finite element analyses, and a detailed parametric study followed by the development of design rules. The work is planned to be executed and completed in 42 months by one doctoral student, one postdoctoral fellow, and three undergraduate students under the supervision of Dr. Das. The outcome of this research will help minimizing the need of unrealistic amount of fund required for replacing the corroded beams of aging bridges and possibly other similar infrastructures of Canada. Further, the highly qualified personnel to be trained in this project will be able to reduce the shortage of skilled labour required in construction industry and municipal and provincial agencies.