Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Development of a high-performance concrete deck for Louisiana’s movable bridges: numerical study
Louisiana has approximately 160 movable bridges, mostly in the southern part of the state. This places Louisiana among the states with the highest inventory of movable bridges in the nation. The typical deck systems in these movable bridges are steel grids. Records show that steel grids have had maintenance issues. An alternative ultra-high/high performance concrete (UHPC/HPC) bridge deck system is proposed for Louisiana’s movable bridges. This system consists of precast waffle slab deck panels, which are reinforced with glass fiber reinforced polymer (GFRP) bars as positive moment reinforcement, and a two-way carbon fiber reinforced polymer (CFRP) mesh as top reinforcement. Several validated nonlinear finite element analyses were performed to simulate the behavior of the precast panels from the onset of loading to failure. It is concluded that the precast concrete waffle slabs provide a viable alternative to steel grids by supplying load capacities that surpass service level and ultimate level load demands and deflection capacities that are within code specified limits. ; This study was sponsored by the Louisiana Transportation Research Center (LTRC). The authors thank the members of the project review committee for their comments and their thorough review of the work performed to date. The authors also thank Lafarge North America for donating Ductal to conduct the material characterization study. The opinions expressed herein are those of the authors and do not necessarily reflect the views of the sponsor. ; info:eu-repo/semantics/publishedVersion
Development of a high-performance concrete deck for Louisiana’s movable bridges: numerical study
Louisiana has approximately 160 movable bridges, mostly in the southern part of the state. This places Louisiana among the states with the highest inventory of movable bridges in the nation. The typical deck systems in these movable bridges are steel grids. Records show that steel grids have had maintenance issues. An alternative ultra-high/high performance concrete (UHPC/HPC) bridge deck system is proposed for Louisiana’s movable bridges. This system consists of precast waffle slab deck panels, which are reinforced with glass fiber reinforced polymer (GFRP) bars as positive moment reinforcement, and a two-way carbon fiber reinforced polymer (CFRP) mesh as top reinforcement. Several validated nonlinear finite element analyses were performed to simulate the behavior of the precast panels from the onset of loading to failure. It is concluded that the precast concrete waffle slabs provide a viable alternative to steel grids by supplying load capacities that surpass service level and ultimate level load demands and deflection capacities that are within code specified limits. ; This study was sponsored by the Louisiana Transportation Research Center (LTRC). The authors thank the members of the project review committee for their comments and their thorough review of the work performed to date. The authors also thank Lafarge North America for donating Ductal to conduct the material characterization study. The opinions expressed herein are those of the authors and do not necessarily reflect the views of the sponsor. ; info:eu-repo/semantics/publishedVersion
Development of a high-performance concrete deck for Louisiana’s movable bridges: numerical study
Baghi, Hadi (Autor:in) / Menkulasi, Fatmir (Autor:in) / Parker, Jacob (Autor:in) / Barros, Joaquim A. O. (Autor:in)
01.07.2017
doi:10.1061/(ASCE)BE.1943-5592.0001056
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
DDC:
621
Development of a High-Performance Concrete Deck for Louisiana’s Movable Bridges: Numerical Study
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