| In this thesis Structural Health Monitoring (SHM) is defined as the process of periodically.;or continuously measuring structural parameters over time and the consequent.;analysis, with the aim of providing actionable information on structural performance.;This work is motivated by the need for network-wide SHM of typical structures.;Strain based SHM methods are explored with the main focus on the location of neutral.;axis and the deformed shape of beam-like structures. SHM methods for evaluation of.;these two parameters are developed, including detailed uncertainty analyses. Additionally, an exploration of several other parameters is presented through a case study. Strain data from two full-scale in-service structures, a large-scale test structure, and a laboratory specimen were used to validate the methods and assess their limitations.;The main conclusions are that: 1) repeated short-term measurements are ideal,;since they are less influenced by temperature and rheological effects; 2) the neutral.;axis location varies in healthy structures and it is sensitive to damage and other.;unusual structural behaviors; 3) uncertainty in the deformed shape was predicted.;prior to data acquisition; and 4) for vertical displacement evaluations, a detailed.;analysis of the boundary conditions is necessary. |
