Development of sustainable TL-5 bridge barrier system reinforced with MST-BAR for market competitiveness

开发采用 MST-BAR 加固的可持续 TL-5 桥梁护栏系统，以提高市场竞争力

• 批准号: 522118-2017
• 负责人: Sennah, Khaled
• 金额: $ 1.82万
• 依托单位: Ryerson University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 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=639832
• 关键词: Development; sustainable; TL; bridge; barrier

Corrosion of steel reinforcement due to environmental effects is a major cause of deterioration problems inbridge barriers. A newly-developed reinforcing bars made of glass fiber reinforced polymers (GFRP) not onlyaddresses this durability problem but also provides exceptionally high tensile strength. B&B FRPManufacturing Inc. developed GFRP bars, designated as "MST-BAR", as a replacement to the traditionalreinforcing steel bars found in a wide variety of infrastructure applications. Since GFRP bar production isproprietary and the development of economically competitive alternatives is warranted, GFRP manufacturershave to go through experimental trial and error to reach the best design to meet code requirements. Since B&BFRP Manufacturing Inc. is looking for applications of these bars in bridges and structures for marketing, theproposed research is intended to develop performance-based design of bridge barriers incorporating thedeveloped straight and bent MST-BAR through experimental trial and error due to lack of reliable informationin design codes. The first part of this research deals with conducting pull-out tests on the developed straightand headed-end bars to determine their pull-out capacity that will then be used to determine the required barspacing in the barrier wall. The second part of this research will include testing to-collapse selected actual-sizebarrier-deck slab geometries to determine their ultimate load carrying capacities and failure modes. Costanalysis will be conducted to assist the company on the next step of market readiness. The research outcome isexpected to advance the state-of-practice on the use of rust-free GFRP bars in eliminating maintenance ofbridge superstructures that results from the use of deicing salts in the winter times. The proposed researchprogram fosters new industry-university interaction in the field of materials and manufacturing research anddevelopment that produces a specific benefit to the economy of Canada.

由于环境影响而导致的钢筋腐蚀是桥梁护栏劣化问题的主要原因。新开发的由玻璃纤维增​​强聚合物 (GFRP) 制成的钢筋不仅解决了这一耐久性问题，而且还提供了极高的拉伸强度。 B&B FRPManufacturing Inc. 开发了 GFRP 钢筋，指定为“MST-BAR”，作为各种基础设施应用中传统钢筋的替代品。由于 GFRP 棒材生产是专有的，并且有必要开发具有经济竞争力的替代品，因此 GFRP 制造商必须经过反复试验才能达到满足规范要求的最佳设计。由于 B&BFRP Manufacturing Inc. 正在寻求这些钢筋在桥梁和结构中的应用以进行市场营销，因此拟议的研究旨在开发基于性能的桥梁屏障设计，通过实验反复试验，结合开发的直型和弯曲型 MST-BAR，因为缺乏可靠的方法。设计规范中的信息。本研究的第一部分涉及对开发的直条和有头条进行拉拔测试，以确定其拉拔能力，然后将其用于确定隔离墙中所需的条间距。这项研究的第二部分将包括对选定的实际尺寸的障碍物甲板板的几何形状进行测试，以确定其最终承载能力和失效模式。将进行成本分析，以协助公司做好下一步的市场准备。该研究成果预计将推进使用防锈 GFRP 筋的实践状态，以消除因冬季使用除冰盐而导致的桥梁上部结构的维护。拟议的研究计划促进材料和制造研发领域新的产学研互动，为加拿大经济带来具体利益。