Damage detection of an innovative composite slab-girder pedestrian bridge using vibration characteristics

Ali, Saima; Thambiratnam, David; Fawzia, Sabrina; Nguyen, Khac-Duy; Elsen, Haden Van Den; Fujii, Ignacio Alvear

doi:10.1080/15732479.2021.1880447

Cited by 6 publications

(4 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ali et al assessed the pedestrian slabs poised on the bridge girders to detect and locate single and multiple damages [111]. The slab specimens are composed of bi-layer LGs ply as the upper layer and GFRP sheet as the lower layer.…”

Section: Applicationsmentioning

confidence: 99%

An overview of technological advancements in the application of structural health monitoring on glass elements

Ahani,

Zhang,

Wang

et al. 2024

Meas. Sci. Technol.

View full text Add to dashboard Cite

The concepts behind employing structural health monitoring (SHM) to the glass structures are in their early stages. While limited information by the application of SHM on glass-made elements could obtain through the literature, recent technological advances enrich the state of the art around the glass elements. As yet because of the novelty in both using SHM and the application of LGs for structural purposes, the historical background around the application of SHM on glass elements doesn't exceed 20 years, and the novelty of the concepts around the LGs may be even more. With this in mind, the demanded assessments have to be incept from the very basis of both the glass and SHM sciences to place the stepping stones of the fundamental stage, which would be a platform for the extending evaluations of glass elements at higher levels. This study is an endeavor to bring forward the available approaches for elaborating SHM on structural elements composed of glass with an emphasis on glass façades. According to the outcomes, the requirement for early detection due to its brittle content proffers structural health monitoring as the limited available alternatives for damage detection of the systems composed of it.

show abstract

Section: Applicationsmentioning

confidence: 99%

An overview of technological advancements in the application of structural health monitoring on glass elements

Ahani,

Zhang,

Wang

et al. 2024

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Vibration-based (dynamic) tests have been considered as an effective approach to evaluate the structural health of bridges [3]. Many previous studies focused on analyzing modal parameters (frequencies and shapes) through numerical models combined with field test results to identify and locate structural damages in bridges [4][5][6][7][8]. Analyses of modal parameters were performed to assess significant negative effects on bridges due to structural rehabilitation [9,10], and some researchers conducted ambient and vehicle-induced vibration tests for a real bridge subject to various deliberately designed damage conditions [11].…”

Section: Research Backgroundmentioning

confidence: 99%

Approximating Dynamic Elastic Modulus of Concrete for an Old Aqueduct Using Dynamic Tests and BP Neural Network

Xiao

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

Monitoring the degradation of the dynamic elastic modulus (Ed) of concrete is of great importance to track the durability deterioration for hydraulic concrete structures. For the aqueduct under investigation in this study, the dynamic elastic modulus of bent frames and moment frame supports (Ed-frame), the dynamic elastic modulus of arch trusses (Ed-arch) and the shear stiffnesses of the asphaltic bearings of U-shaped flumes (Kflume) are the main parameters to define the dynamic behavior of the structure, which have direct correlation with its vibrational characteristics and thus practicably can be estimated by a BP (back-propagation) neural network using modal frequencies as inputs. Since it is impossible to obtain sufficient experimental field data to train the network, a full-scale 3D FE model of the entire aqueduct is created, and modal analyses under different combinations of Kflume, Ed-arch and Ed-frame are conducted to generate the analytical dataset for the network. After the network’s architecture is refined by the cross-validation process and its modeling accuracy verified by the test procedure, the primary modal frequencies of the aqueduct obtained from in situ dynamic tests are put into the network to obtain the final approximations for Kflume, Ed-arch and Ed-frame, which sets an evaluation baseline of the general concrete Ed status for the aqueduct and indicates that the makeshift asphaltic bearings of U-shaped flumes basically can be treated as a three-directional hinge in the FE model. It is also found that more inputs of modal frequencies can improve the prediction accuracy of the BP neural network.

show abstract

“…The causes of the torsional response of buildings are mostly related to the eccentric distribution of stiffness, damping, and the mass of a structure, or torsional excitations 1 – 9 . The torsional response considering SSI is a key issue to be concerned about, as the rotation can significantly contribute to the response of most buildings, bridges, and steel structures during earthquakes 10 – 12 . Complex engineering problems can be solved by developing simplified models.…”

Section: Introductionmentioning

confidence: 99%

Dynamic analysis of cylindrical foundations under torsional loading via generic discrete-element models simulating soil stratum

Chen,

Kao,

Shi

2023

Sci Rep

View full text Add to dashboard Cite

Torsional vibration, considering soil-structure interaction, is essential to the dynamic response of most irregular structures. A systematic method is developed to seek the optimal simplified model among multiple model candidates for uniform soil on rigid base regarding dynamic soil-foundation interactions. A generic model is identified by the proposed method to simulate the cylindrical foundation resting on or embedded in the soil stratum under torsional vibrations. Various soil-foundation parameters, mainly including embedment depth, layer depth, and mass ratios, are considered in the simplified analysis. The frequency-magnification curves and resonant responses of the foundation using the generic model agree well with theoretical solutions. The resultant resonant magnification factors against mass ratios clearly illustrate the impacts of the whipping effect resulting from the soil-foundation interactions. The generic model performs better and adopts fewer parameters than the existing model to simulate the soil-foundation interactions. In addition, dimensionless parametric charts are presented to estimate foundation responses for engineering applications quickly. The proposed charts also significantly overcome the limitations of the Wolf and Paronesso model. The generic model shows efficiency and accuracy in simulating the soil stratum. This research could contribute to the foundation vibration analysis for torsional responses.

show abstract

Damage detection of an innovative composite slab-girder pedestrian bridge using vibration characteristics

Cited by 6 publications

References 21 publications

An overview of technological advancements in the application of structural health monitoring on glass elements

An overview of technological advancements in the application of structural health monitoring on glass elements

Approximating Dynamic Elastic Modulus of Concrete for an Old Aqueduct Using Dynamic Tests and BP Neural Network

Dynamic analysis of cylindrical foundations under torsional loading via generic discrete-element models simulating soil stratum

Contact Info

Product

Resources

About