Modular UHPC waffle deck slabs for highway bridges

用于公路桥梁的模块化 UHPC 华夫格板

• 批准号: 515252-2017
• 负责人: Gauvreau, Paul
• 金额: $ 1.99万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 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=618095
• 关键词: Modular; UHPC; waffle; deck; slabs

This project deals with the development of a system for constructing deck slabs for highway bridges that arelighter, faster to construct, more durable, and more economical than conventional deck slabs built ofcast-in-place concrete. Using the proposed system, deck slabs are assembled from modular prefabricated panelsconstructed from ultra high-performance concrete (UHPC). This is a new material that improves onconventional concrete by offering higher compressive strength, a reliable tensile strength, and extremely lowpermeability. This enables the deck slab panels to be composed of a relatively thin slab with monolithic ribs intwo orthogonal directions, thus making the panels significantly lighter than conventional solid deck slabs.The work to be accomplished in this project is to determine the most optimum dimensions for the concretepanels and arrangement of reinforcement. This will be accomplished by analytical and experimental means,including full-scale load tests.

该项目介绍了用于为高速公路桥建造甲板板的系统的开发，该系统比在现场混凝土建造的传统甲板板上更快，更耐用且更经济。使用所提出的系统，甲板板是由从超高性能混凝土（UHPC）构造的模块化的面板组装的。这是一种新材料，可通过提供更高的抗压强度，可靠的拉伸强度和极低的渗透率来改善范围的混凝土。这使甲板平板面板由相对较薄的平板组成，带有整体肋骨正交方向，从而使面板明显比传统的实心甲板平板更轻。这将通过分析和实验手段（包括全尺度负载测试）来实现。