Bridge load testing and damage evaluation using model updating method

Abedin, Mohammad; Basalo, Francisco J. De Caso y; Kiani, Nafiseh; Mehrabi, Armin; Nanni, Antonio

doi:10.1016/j.engstruct.2021.113648

Cited by 38 publications

(9 citation statements)

References 37 publications

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“…Furthermore, by increasing the curved notch of the cross-sectional plate, the out-of-plane deformation of the cross-sectional plate caused by the torsional deformation of the longitudinal ribs could be effectively reduced [19,20]. In addition, the use of the high-strength friction-type bolted steel plate reinforcement method can restrain the expansion of cracks, while the reinforced cracked cross-sectional plate was found to have good force performance [21][22][23][24]. However, in the actual project, the reinforcement effect has to be carried out to test the stress distribution law after reinforcement by a real bridge load test and to analyze the effect of arc-cut optimization or steel plate reinforcement method on the force performance of other key parts of the cross-sectional plate.…”

Section: Introductionmentioning

confidence: 99%

Study of Secondary Effects of Fatigue Cracks in Cross Partitions of Steel Plate Reinforced Steel Box Girders

et al. 2022

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In order to investigate the effect of optimized reinforcement of cross-section of steel box girders with fatigue cracks on other vulnerable parts (cross-section, U-rib and deck slab, etc.) under wheel load, and to reveal the stress distribution law of critical parts after the optimization of steel plate reinforcement or arc notch. In this work, a suspension bridge with fatigue cracks in the curved notch of the cross-sectional plate is considered as the research object, two types of curved notch optimization reinforcement solutions are considered and finite element analysis is performed. Longitudinal and transverse moving loading tests were conducted with a test vehicle to test the stresses in the critical parts of the curved cutout of the cross-section. Furthermore, the effects of the two optimized strengthening solutions on the stresses in the curved cutout, the sides of the diaphragm, the sides of the U-rib and the deck slab were analyzed, and the effects of the changes in the diaphragm stiffness on other critical vulnerable structures were analyzed. The study shows that when the “arc notch optimization” strengthening scheme is adopted for crack-free or short cracks, although it can effectively improve the stress transfer path of the arc notch of the diaphragm, it also weakens the cross-sectional area of the diaphragm and has little effect on the diaphragm side, U-rib and deck plate. When the long crack is reinforced by “arc notch optimization + steel plate reinforcement”, it is easy to cause a reaction to the diaphragm sides arranged at the junction area of the diaphragm arc notch and U-rib without steel plate coverage, and the stress will be slightly higher than that when the diaphragm is not optimized. The steel plate reinforcement hurts the lateral stress of the U-rib, but the reinforcement effect will not have any effect on the deck plate.

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Section: Introductionmentioning

confidence: 99%

Study of Secondary Effects of Fatigue Cracks in Cross Partitions of Steel Plate Reinforced Steel Box Girders

et al. 2022

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“…If the boundary condition of the structure is simplified as a fixed or pin instead of considering soil-properties, the updated FE model will be inaccurate. [13][14][15][16][17][18] Next, most of the FE model updating methods are not compatible with commercial FE software such as LS-DYNA. LS-DYNA, a commercial FE program, has secured the reliability of the SSI analysis; [19][20][21][22][23][24] however, it cannot perform efficient FE model updating.…”

Section: Introductionmentioning

confidence: 99%

Structural Finite Element Model Updating Considering Soil- Structure Interaction Using Ls-dyna in Loop

Park

Jung

Yoon

2022

Preprint

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In this study, a finite element model updating method which can consider soil-structure interaction was developed to analyze the effect of soil properties on the structural response while considering interaction between the soil and the structure. Additionally, LS-DYNA, a commercial finite element program, was included in the loop of the proposed technique using MATLAB to conveniently utilize the complex structures updated by the model. To validate the performance of the proposed method, a large-scale shake table test was conducted. The objective of the validation test was to seek how accurately the proposed model updating method can detect the change in the stiffness. To compare the result of the proposed method with the conventional method, the model updating procedure was conducted with and without considering soil-structure interaction. The proposed finite element model updating method which considers the soil-structure interaction estimated the stiffness of the structure with maximum accuracy of 91%, while the conventional finite element model updating without considering the soil-structure interaction showed maximum accuracy of 88%. By comparing the proposed method with the conventional method without considering the soil-structure interaction, it was confirmed that the proposed method had an 3% higher accuracy on average.

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“…The average age of in-service bridges in the United States is increasing, which necessitates methods and tools to inform decision making related to maintenance and/or replacement of these structures [1]. Finite Element (FE) model updating methods have emerged as a venerable procedure for operational health monitoring and post-event structural damage identification [2][3][4][5][6][7][8][9][10][11][12][13][14][15]. In these methods, the initial/baseline FE model -developed using available as-built Disclaimer/Publisher's Note: The statements, opinions, and data contained in all publications are solely those of the individual author(s) and contributor(s) and not of MDPI and/or the editor(s).…”

Section: Introductionmentioning

confidence: 99%

“…Although the estimated linear model parameter can be used for structural monitoring and damage identification [22], the application of modal-based model updating for damage identification of reinforced concrete bridges has been shown to be limited [23,24]. The second group of model updating approaches is referred to as time-domain model updating [15,25,26]. In this approach, the unknown model parameters characterizing linear and/or nonlinear response behavior of structure are updated to reduce the discrepancies between the measured and FE-predicted responses in time domain.…”

Section: Introductionmentioning

confidence: 99%

“…The application of time-domain model updating for bridges subjected to traffic excitation has also attracted research interest recently. For example, Abedin et al in [15], used measured static deformations of a precast prestressed concrete box-girder bridge for model updating to estimate the damage at deck panel joints. The literature also includes studies in which a combination of static responses and modal properties are used to update FE model of bridges, e.g., [4,5,9,32,33].…”

Section: Introductionmentioning

confidence: 99%

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A Two-step FE Model Updating Approach for System and Damage Identification of Full-Scale Prestressed Bridge Girders

Malekghaini¹,

Ghahari²,

Ebrahimian³

et al. 2022

Preprint

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The average age of in-service bridges has increased in recent years in the United States. To address this issue, structural health monitoring and damage identification approaches can be employed to prioritize maintenance/replacement of aging bridges. Among the damage identification and operational health monitoring approaches, finite element (FE) model updating methods can offer a solution to evaluate the mechanics-based characteristics of bridges. However, in a real-world setting, unidentifiability and mutual dependency between model parameters, modeling errors, especially due to boundary conditions, as well as ill-conditioning of updating algorithms can pose challenges to the application of FE model updating methods. To address these challenges, this study presents a two-step FE model updating approach. In the first step, modal-based model updating is used to estimate linear model parameters mainly related to the stiffness of boundary conditions and material properties. In the second step, in order to refine parameter estimation accounting for nonlinear response behavior of the bridge, a time-domain model updating is carried out. In this step, boundary conditions are fixed at their final estimates using modal-based model updating. To prevent the convergence of updating algorithm to local solutions, the initial estimates for nonlinear material properties are selected based on their corresponding final estimates in the modal-based model updating. To validate the applicability of the two-step FE model updating approach, a series of forced-vibration experiments are designed and carried out on a pair of decommissioned and deteriorated prestressed bridge I-girders. After carrying out the two-step FE model updating, the final estimates of concrete compressive strength are shown to provide reasonable assessment of the damage extent in the girders.

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Bridge load testing and damage evaluation using model updating method

Cited by 38 publications

References 37 publications

Study of Secondary Effects of Fatigue Cracks in Cross Partitions of Steel Plate Reinforced Steel Box Girders

Study of Secondary Effects of Fatigue Cracks in Cross Partitions of Steel Plate Reinforced Steel Box Girders

Structural Finite Element Model Updating Considering Soil- Structure Interaction Using Ls-dyna in Loop

A Two-step FE Model Updating Approach for System and Damage Identification of Full-Scale Prestressed Bridge Girders

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