Structurally integrated stay-in-place composite forms for concrete structures

用于混凝土结构的结构集成固定复合模板

• 批准号: 261498-2008
• 负责人: Fam, Amir
• 金额: $ 1.75万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=455954
• 关键词: Structurally; integrated; stay; place; composite

About 32% of Ontario's 15,000 bridges need rehabilitation or replacement. In Québec, this percentage is 52%, with an estimated cost of $5B over the next 10 years. This project introduces a new technology that will change the way we build bridges and other infrastructure by enabling much faster and simpler construction and a longer design life. Readily available fiberglass sections and plates will be used as open forms for concrete casting in bridge decks, parking garages and marine platforms. They are then left in place permanently, providing reinforcement that fully or partially replaces internal steel bars. Corrosion of steel bars is a major contributor to the looming infrastructure crisis. Because the forms are left in place and are noncorrosive, the project promises solutions for major problems such as traffic delays and road closures that hurt the economy, durability as in bridge decks exposed to deicing salts, and accessibility for removal of forms after concrete hardening. Structural models will be built using this technology and tested to failure in the lab, to evaluate their performance, strength and failure mode. Mathematical models will be developed, verified using test results and used in parametric studies to develop design guides for engineers. Indeed, results of the project promises substantial savings in tax dollars spent on infrastructure repair or replacement, allowing these funds to be used in other investments to improve quality of life for Canadians. The applicant has extensively studied concrete filled fiberglass tubes as closed forms for piles, columns or poles. He is now considered a leader and holds a Canada Research Chair in this area. He will also extend this work to include bridge column joints and highway signage. During the funding period, 2 PhD and 5 MSc students will be trained as future engineers capable of transferring technology from the lab to the field with confidence and enthusiasm. Training involves critical thinking, problem solving, hands-on experience, lab testing, data analysis, computer modeling, technical writing, presenting, team work and networking. Former grad. students of the applicant are hired by some of the top companies/agencies, including Delcan Corp and MTO (bridges) and Carl Walker Inc (parking structures)

安大略省15,000座桥梁中约有32%需要修复或更换。在魁北克，这一比例为52%，预计未来10年的成本为50亿美元。该项目引入了一项新技术，通过更快、更简单的施工和更长的设计寿命，将改变我们建造桥梁和其他基础设施的方式。现成的玻璃纤维型材和板材将用作桥面、停车场和海上平台混凝土浇注的敞口模板。然后，它们被永久留在原地，提供加固，完全或部分取代内部钢筋。钢筋锈蚀是迫在眉睫的基础设施危机的主要原因。由于模板留在原地且不具腐蚀性，该项目承诺解决主要问题，如交通延误和道路封闭，这些问题损害了经济，耐久性，如暴露在除冰盐中的桥面，以及混凝土硬化后拆卸模板的可达性。将利用该技术建立结构模型，并在实验室进行破坏测试，以评估其性能、强度和破坏模式。将开发数学模型，使用测试结果进行验证，并用于参数研究，为工程师制定设计指南。事实上，该项目的结果承诺，在基础设施修复或更换上花费的税款将大幅节省，使这些资金能够用于其他投资，以改善加拿大人的生活质量。申请人广泛研究了玻璃纤维管混凝土作为桩、柱或杆的封闭形式。他现在被认为是这一领域的领导者，并担任加拿大研究教席。他还将把这项工作扩展到桥梁立柱接缝和高速公路标志。在资助期间，2名博士和5名硕士学生将接受培训，成为未来的工程师，能够满怀信心和热情地将技术从实验室转移到现场。培训包括批判性思维、解决问题、实践经验、实验室测试、数据分析、计算机建模、技术写作、演示、团队合作和网络。以前的毕业生。申请人的学生被一些顶级公司/机构聘用，包括德尔坎公司、MTO(桥梁公司)和卡尔·沃克公司(停车结构公司)。