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

制定使用 BFRP 包裹修复腐蚀钢梁的设计规则

• 批准号: 479141-2015
• 负责人: Das, Sreekanta
• 金额: $ 2.84万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=579958
• 关键词: Development; design; rules; repair; corroded

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.

加拿大幅员辽阔，加拿大各城镇之间的互联互通是通过我们庞大的道路、高速公路以及位于这些高速公路和道路上的桥梁网络实现的。这些桥梁很多建于50多年前，这些桥梁要么已经超过了设计使用寿命，要么即将达到使用寿命。这些桥梁中有许多是用钢梁建造的，它们遭受了腐蚀损坏，这是令人不快但不可避免的。因此，许多桥梁被认为存在结构缺陷，其中一些桥梁被认为结构不安全。立即采取行动修复和修复这些桥梁大梁对于修复这些桥梁并使其继续使用至关重要。如果做不到这一点，类似蒙特利尔牧师桥几乎摇摇欲坠的可怕事件可能会在全国许多其他桥梁上发生。该研究计划经过精心设计，旨在开发使用新兴且易于应用的绿色玄武岩纤维包裹物修复因腐蚀而损坏的钢梁和大梁的设计规则。该项目将开发的新修复和修复技术将是一种绿色且更便宜的解决方案，易于在现场应用，并且不会或最小化对交通流的干扰。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、一名博士后和三名本科生在 Das 博士的指导下在 42 个月内执行并完成。这项研究的结果将有助于最大限度地减少更换老化桥梁和加拿大其他类似基础设施的腐蚀梁所需的不切实际的资金需求。此外，该项目培养的高素质人才将能够减少建筑行业和市、省机构所需熟练劳动力的短缺。