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通性是通过我们庞大的道路网络、高速公路和位于这些公路和道路上的桥梁实现的。这些桥梁中有许多是在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。这些桥梁中的许多都是用钢梁建造的，这些钢梁遭受了令人不快但不可避免的腐蚀损坏。因此，许多桥梁被认为是结构缺陷，其中一些被认为是结构不安全的。立即采取行动，修复和恢复这些桥梁是至关重要的，以恢复这些桥梁，并保持它们的服务。如果做不到这一点，像蒙特利尔的牧师桥几乎摇摇欲坠这样的可怕事件可能会发生在全国各地的许多其他桥梁上。这项研究计划是精心设计的，以制定设计规则，修复钢梁和大梁损坏的腐蚀使用新兴的和绿色易于应用的玄武岩纤维包裹。本项目将开发的新的维修和修复技术将是一种绿色和廉价的解决方案，易于在现场应用，并且不会或最小限度地中断交通流量。这项工作将涉及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。这项工作计划由一名博士生，一名博士后研究员和三名本科生在Das博士的监督下在42个月内完成。这项研究的结果将有助于减少不切实际的资金需求，以更换老化桥梁和加拿大其他类似基础设施的腐蚀梁。此外，将在该项目中培训的高素质人员将能够减少建筑业和省市机构所需熟练劳动力的短缺。

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.