Bi-axial behaviours of abraded and rehabilitated FRP decks as anisotropic plates under concentrated wheel loading
نویسندگان
چکیده
For in-service GFRP (glass fibre-reinforced polymer) cellular bridge decks, wheel loads can induce damage of the anti-skid surfacing-to-deck bond, thereby loosening fragments surfacing that then cause abrasion deck’s top flange under further loads. Indeed, over last 20 years, load-induced to flanges FRP decks on road network has been observed in different countries, after periods service ranging from a few days due inadequate design. Bonding uni-directional panels abraded multi-directional constitutes potentially effective rehabilitation strategy, but it also influences local wheel-load response by altering anisotropy flange. The present paper uses an experimental-numerical study explore this role for both and rehabilitated decks. experiments captured flanges’ peak biaxial strains, using gauges installed soffits avoid wheels. numerical model captures morphology deck, actual spread tyre load contact zone spatial variations or built-up webs. results show uni-axially dominated strategy strongly improves bi-axial static encouragingly predicts strains each reliably strain reductions rehabilitation. Refined meshes along tyre-loaded span, with coarser adjacent spans, enable these reasonable predictions response. It is concluded soffit via ad-hoc tooling inserted through holes bottom flange, tandem rigorous modelling, two-pronged approach elucidating effects.
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ژورنال
عنوان ژورنال: Engineering Structures
سال: 2021
ISSN: ['0141-0296', '1873-7323']
DOI: https://doi.org/10.1016/j.engstruct.2020.111704