STUDY OF STRUCTURAL BEHAVIOUR OF REINFORCEMENT-FREE CONCRETE DECK STRUCTURE CONSTRUCTED WITH FRP

Abstract

Abstract: To enhance the durability of concrete bridge deck structure and reduce the maintenance cost, a reinforcement-free concrete deck structure based on FRP was invented in this study. In this deck structure, the loading-carrying mechanism is an arching action inside the deck slab. Because this structure is restrained by horizontal GFRP rods, there is no reinforcement provided in the concrete slabs. A series of one-third scale test models were conducted and tested with the variation in structural parameters, including supporting beams, spacing of lateral restraint rods and loading positions. The results were used to study the effect of arching action on loading-carrying capacity of deck structures by investigating the behaviour of test decks under wheel loads. Due to the accurate validation of the results from nonlinear finite element analysis and experimental tests, a further parametric study were conducted to investigate the influence of other structural variables, such as concrete strengths, arch depth and configuration of FRP rods.

Key words: GFRP, deck slabs, finite element analysis, experimental study, arching action

CLC Number:

TB332

LI You, ZHENG Yu, YANG Jian-bin, WEI Mu-wang. STUDY OF STRUCTURAL BEHAVIOUR OF REINFORCEMENT-FREE CONCRETE DECK STRUCTURE CONSTRUCTED WITH FRP[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(8): 59-66.

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