橋梁床版(1)

[I-363] Analytical Study on Damage Process and Failure Mode of Waffle-Shaped UHPFRC Deck Slab

〇Masaru Fujishiro¹, Tosimichi Ichinomiya¹, Takashi Kosaka², Tsuneki Kondo² (1.KAJIMA CORPORATION, 2.Hanshin Expressway Company)

Keywords:Ultra high strength fiber reinforced concrete, Bridge deck, Material nonlinear analysis, Destruction mode

A waffle-shaped UHPFRC deck slab using pre-stress in two directions using ultra-high-strength fiber-reinforced concrete was developed as an ultra-lightweight concrete slab equivalent to a steel deck slab, and applied to a newly installed slab for the first time. In this report, nonlinear static analysis was performed on a model considering material nonlinearity by gradually increasing the load, the strain of PC steel was estimated, and the damage process and failure mode leading to fracture were estimated.