Concentric and eccentric compressive material characterization of polyurethane disc bridge bearings
| dc.contributor.advisor | Lloyd, Alan | |
| dc.contributor.author | Thibodeau, Nicholas William | |
| dc.date.accessioned | 2025-01-28T13:53:48Z | |
| dc.date.available | 2025-01-28T13:53:48Z | |
| dc.date.issued | 2024-12 | |
| dc.description.abstract | Disc bridge bearings are immerging as a popular choice for modern bridge designers. The key constituent of the bearings is their polyurethane disc as it can withstand high vertical loads without excessive deflection yet may deform to permit superstructure rotations. This thesis presents an experimental and numerical investigation of polyurethane used in disc bridge bearings under compressive and rotational loads. The primary objectives of the research were to characterize the experimental and numerical results to aid in the design and behavioural understanding of disc bridge bearings. Small-scale polyurethane specimens were tested under cyclic uniaxial compression with concentric and eccentric loading to develop stress-strain and moment-rotation relationships. Concentric testing was also repeated with specimens conditioned to 0°C to provide preliminary investigations into the low-temperature behaviour of the polyurethane. Characteristics of the material such as the influence shape factor, stiffness behaviour, residual strain, loading history, and rotational predictability were discussed. | |
| dc.description.copyright | © Nicholas Thibodeau, 2024 | |
| dc.format.extent | xiv, 137 | |
| dc.format.medium | electronic | |
| dc.identifier.uri | https://unbscholar.lib.unb.ca/handle/1882/38235 | |
| dc.language.iso | en | |
| dc.publisher | University of New Brunswick | |
| dc.relation | MITACS Accelerate Program | |
| dc.relation | Goodco Z-Tech | |
| dc.rights | http://purl.org/coar/access_right/c_abf2 | |
| dc.subject.discipline | Civil Engineering | |
| dc.title | Concentric and eccentric compressive material characterization of polyurethane disc bridge bearings | |
| dc.type | master thesis | |
| oaire.license.condition | other | |
| thesis.degree.discipline | Civil Engineering | |
| thesis.degree.grantor | University of New Brunswick | |
| thesis.degree.level | masters | |
| thesis.degree.name | M.Sc.E. |