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.

该项目涉及一种公路桥梁桥面板建造系统的开发，该系统比传统的现浇混凝土桥面板更轻、建造速度更快、更耐用、更经济。使用拟议的系统，甲板板由高性能混凝土（UHPC）建造的模块化预制板组装而成。这是一种新材料，通过提供更高的抗压强度、可靠的抗拉强度和极低的渗透性，改善了传统混凝土。这使得甲板板面板可以由一个相对较薄的板组成，在两个正交的方向上有一个整体肋，从而使面板明显比传统的实心甲板板轻。在这个项目中要完成的工作是确定混凝土板的最佳尺寸和钢筋布置。这将通过分析和实验手段完成，包括全尺寸负载测试。