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: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=651635
• 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 are**lighter, faster to construct, more durable, and more economical than conventional deck slabs built of**cast-in-place concrete. Using the proposed system, deck slabs are assembled from modular prefabricated panels**constructed from ultra high-performance concrete (UHPC). This is a new material that improves on**conventional concrete by offering higher compressive strength, a reliable tensile strength, and extremely low**permeability. This enables the deck slab panels to be composed of a relatively thin slab with monolithic ribs in**two 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 concrete**panels and arrangement of reinforcement. This will be accomplished by analytical and experimental means,**including full-scale load tests.

该项目涉及开发一种用于建造公路桥梁桥面板的系统，该系统比由现浇混凝土建造的传统桥面板更轻、施工速度更快、更耐用且更经济。使用所提出的系统，甲板板由模块化预制面板**组装而成，这些面板由超高性能混凝土（UHPC）建造。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率来改进**传统混凝土。这使得甲板板面板能够由相对较薄的板组成，并在**两个正交方向上具有整体肋，从而使面板比传统的实心甲板板轻得多。****该项目要完成的工作是确定混凝土**板的最佳尺寸和钢筋的布置。这将通过分析和实验手段来完成，**包括全面的负载测试。