Live load distribution and evaluation of bridges using digital image measurements
| Author(s) | Timber, Luke C. | |
| Date Accessioned | 2022-04-28T12:37:06Z | |
| Date Available | 2022-04-28T12:37:06Z | |
| Publication Date | 2022 | |
| SWORD Update | 2022-03-15T19:03:55Z | |
| Abstract | In this study, non-contact, vision-based measurement techniques using digital image correlation are compared to displacement measurements obtained from mounted sensors to analyze the live load distribution in two candidate slab-girder bridges. Vision-based measurement techniques have the potential to eliminate the need to mount sensors and capture data in a contactless way for bridge monitoring and evaluation, especially for bridges without documentation. The primary contribution of this paper is to serve as such a case study for the specific application of full-scale load testing of bridges using digital image measurements to monitor displacements. For one of the bridges, which did not have available bridge plans, a companion analytical model is created in ABAQUS to compare the live load distribution to the girders versus displacement measurements obtained from non-contact, vision-based measurements. However, as expected standard AASHTO (2020) methodology provided more conservative distribution factors in this case by more than ten percent for the slab-girder bridge tested with four girders. The difference in live load distribution factors obtained from mounted strain gauges to the non-contact and mounted displacement sensors is discussed. | en_US |
| Advisor | Head, Monique H. | |
| Degree | M.C.E. | |
| Department | University of Delaware, Department of Civil and Environmental Engineering | |
| Unique Identifier | 1312864394 | |
| URL | https://udspace.udel.edu/handle/19716/30832 | |
| Language | en | |
| Publisher | University of Delaware | en_US |
| URI | https://login.udel.idm.oclc.org/login?url=https://www.proquest.com/dissertations-theses/live-load-distribution-evaluation-bridges-using/docview/2642811304/se-2?accountid=10457 | |
| Keywords | Bridge load testing | |
| Keywords | Bridges | |
| Keywords | Digital image measurement | |
| Keywords | Distribution factors | |
| Keywords | Finite element modeling | |
| Keywords | Live load distribution | |
| Title | Live load distribution and evaluation of bridges using digital image measurements | en_US |
| Type | Thesis | en_US |