Wireless Monitoring of a Multispan Bridge Superstructure for Diagnostic Load Testing and System Identification

Gangone, Michael V.; Whelan, Matthew J.; Janoyan, Kerop D.

doi:10.1111/j.1467-8667.2010.00711.x

Cited by 60 publications

(47 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Gangone et al [13] equipped a bridge with three simply supported spans in Waddington, NY, with 99 strain gauges and accelerometers. The strain gauges were installed on the steel girders, one at the bottom of the lower flange, exactly under the web, and one on the bottom of the top flange, right next to the web.…”

Section: Controlled Testing Of Real Structuresmentioning

confidence: 99%

See 1 more Smart Citation

The neutral axis location for structural health monitoring: an overview

Sigurdardottir

Glišić

2015

J Civil Struct Health Monit

View full text Add to dashboard Cite

Structural health monitoring (SHM) is the process of continuously or periodically measuring structural parameters over time and the transformation of the acquired data into information about the actual structural behavior. The main goal of SHM is to provide quantitative and actionable information to infrastructure managers on a system-wide level. However, to achieve this goal, damage sensitive universal parameters need to be researched, identified, and implemented into SHM processes and data analysis. The neutral axis location has been identified as a potential parameter for damage detection, performance evaluation, and condition assessment of beam-like structures. This paper is intended to serve as a reference for researchers who are interested in the state of the art in evaluation of the neutral axis location, facts about the neutral axis behavior, and challenges associated with using the neutral axis for SHM purposes. Studies of the neutral axis in laboratory settings, controlled on-site testing, and on real structures in on-site conditions are presented and discussed. The main difficulties in using the neutral axis location for SHM purposes that are identified in this paper are: (1) its sensitivity to environmental effects such as temperature, humidity, and loading positions, (2) its natural variation in healthy cross-sections, (3) quantification of its sensitivity to damage, i.e. its damage detection capabilities in terms of the damage size and its distance from sensors, and (4) correlation between the neutral axis location and the capacity, performance, and condition of the monitored structure. The proof of concept has been provided with numerical modeling, and in the laboratory, and to some extent through controlled testing; however, a general onsite validation still remains a major challenge.

show abstract

Section: Controlled Testing Of Real Structuresmentioning

confidence: 99%

“…Average of the neutral axis locations measured from the bottom of the lower flange and 95 % confidence interval (CI) of the mean[13] …”

mentioning

confidence: 99%

The neutral axis location for structural health monitoring: an overview

Sigurdardottir

Glišić

2015

J Civil Struct Health Monit

View full text Add to dashboard Cite

show abstract

“…TinyOS 1.x was used, but was supplemented with additional software written by the authors for hardware interfacing. The WSS underwent further testing; see , and Gangone et al (2011). Taylor et al (2009) propose a mobile sensing system.…”

Section: Appendix B Experimental Shm Systemsmentioning

confidence: 99%

Phase Space Dissimilarity Measures for Structural Health Monitoring

Bubacz¹,

Chmielewski²,

Pape³

et al. 2011

View full text Add to dashboard Cite

“…In this regard, the estimation of modal parameters, such as natural frequencies and damping ratios, of civil structures has become an important tool because they can reflect their dynamic behavior under natural and artificial excitations. Modal parameters are widely used in applications such as seismic design for civil and earthquake engineering [1][2][3], vibration control [4], condition and damage assessment [5][6][7], and development or update of analytical models [8,9]. Hence, their accurate estimation allows providing more reliable and suitable information of the structure, improving the performance and results of the aforementioned applications.…”

Section: Introductionmentioning

confidence: 99%

A Two-Step Strategy for System Identification of Civil Structures for Structural Health Monitoring Using Wavelet Transform and Genetic Algorithms

et al. 2017

View full text Add to dashboard Cite

Nowadays, the accurate identification of natural frequencies and damping ratios play an important role in smart civil engineering, since they can be used for seismic design, vibration control, and condition assessment, among others. To achieve it in practical way, it is required to instrument the structure and apply techniques which are able to deal with noise-corrupted and non-linear signals, as they are common features in real-life civil structures. In this article, a two-step strategy is proposed for performing accurate modal parameters identification in an automated manner. In the first step, it is obtained and decomposed the measured signals using the natural excitation technique and the synchrosqueezed wavelet transform, respectively. Then, the second step estimates the modal parameters by solving an optimization problem employing a genetic algorithm-based approach, where the micropopulation concept is used to improve the speed convergence as well as the accuracy of the estimated values. The accuracy and effectiveness of the proposal are tested using both the simulated response of a benchmark structure and the measurements of a real eight-story building. The obtained results show that the proposed strategy can estimate the modal parameters accurately, indicating than the proposal can be considered as an alternative to perform the abovementioned task.

show abstract

Wireless Monitoring of a Multispan Bridge Superstructure for Diagnostic Load Testing and System Identification

Cited by 60 publications

References 31 publications

The neutral axis location for structural health monitoring: an overview

The neutral axis location for structural health monitoring: an overview

Phase Space Dissimilarity Measures for Structural Health Monitoring

A Two-Step Strategy for System Identification of Civil Structures for Structural Health Monitoring Using Wavelet Transform and Genetic Algorithms

Contact Info

Product

Resources

About