Bridge damping identification by vehicle scanning method

Yang, Y.B.; Zhang, Bin; Chen, Yanan; Qian, Yao; Wu, Yuntian

doi:10.1016/j.engstruct.2019.01.041

Cited by 78 publications

(26 citation statements)

References 36 publications

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“…Therefore, once the acceleration response component is obtained from the measured response of the test vehicle as shown in Equation (18), it can be normalized with e −ξ 1 ω 1 t to remove the transient effect of the response followed by Hilbert transformation to get the scale factor [9] of the first vibration mode shape of the bridge deck. It is worth noting that although the theoretical part of this paper uses the simple supported beam bridge mode under the undamaged condition, the numerical simulation analysis based on the damaged conditions below shows that the technique is also suitable for damage identification.…”

Section: Indirect Measurement Of Mode Shape Of Bridge Structuresmentioning

confidence: 99%

“…OBrien and co-workers [17] proposed a method to detect changes in the damping of a bridge with a truck-trailer vehicle system. Yang et al [18] proposed a method for identifying the damping ratios of simply supported beams using a two-axle moving test vehicle, equipped with uniformly spaced accelerometers and laser sensors in an ideal model.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Feasibility Study of Tractor-Test Vehicle Technique for Practical Structural Condition Assessment of Beam-Like Bridge Deck

et al. 2020

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The tractor-test vehicle technique of non-destructive testing for indirect measurement of the modal properties of a bridge deck is revisited in this paper with several improvements for possible practical application to the structural condition assessment of a beam-like bridge deck. The effect of damping of the vehicle-bridge system is considered and the modal properties from only the first vibration mode of the structure will be used for a quick and simple assessment. The two test vehicles are designed to have the same modal frequency and damping ratio but with parameters in the follower No.2 test vehicle proportional to those in the follower No.1 test vehicle. This effectively removes the effect of road surface roughness in the response of an equivalent vehicle such that the error in the subsequent condition assessment is reduced. Through data collected on-sitetransmitted to theremote computer platform, a simple technique based on the moment-curvature relationship acceptable to practical engineers is adopted for the condition assessment with improvements in the estimation of the element bending stiffness of the deck. Scenarios with different damping, vehicle speed, road surface roughness, and local damages in the bridge structure are studied with or without temperature effect in the measurement. Through numerical simulations and field tests, the tractor-test vehicle technique of non-destructive testing with the proposed modifications and improvements has been demonstrated to give consistently accurate estimates of the element bending stiffness of the bridge deck but with a small error close to the end of the deck.

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Section: Indirect Measurement Of Mode Shape Of Bridge Structuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Feasibility Study of Tractor-Test Vehicle Technique for Practical Structural Condition Assessment of Beam-Like Bridge Deck

et al. 2020

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“…Plenty of promising results have been obtained. Theoretical studies have been conducted using the vehicle responses to identify the bridge frequencies, [1][2][3] damping, [4][5][6] mode shapes, [7][8][9] surface roughness [10][11][12][13][14] and so on, and to detect damage [15][16][17] and rail irregularities. 18 Laboratory experiments and field tests have also been carried out successfully, albeit mainly on the extraction of bridge frequencies.…”

Section: Introductionmentioning

confidence: 99%

Bridge identification and damage detection using contact point response difference of moving vehicle

Zhan

Zhang

2021

Struct Control Health Monit

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“…Additionally, fewer researchers successfully extracted the bridge mode shapes from a moving sensor by adopting various signal processing techniques (e.g., short time-frequency domain decomposition or Hilbert transformation) [25][26][27]. Other researchers have investigated the identification of damping using moving vehicle responses [13,28]. Next to the direct natural frequency identification, it is also possible to estimate mechanical parameters of the bridge from drive-by inspections.…”

Section: Introductionmentioning

confidence: 99%

Experimental Estimation of the Elastic Modulus of Concrete Girders from Drive‐By Inspections with Force‐Balance Accelerometers

Aloisio

Alaggio

2021

Shock and Vibration

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Parametric identification of bridges using instrumented vehicles can be challenging, mainly due to the reduced length of the time series associated with the bridge span under test. This research discusses the practicability of a time-domain identification method based on the use of an instrumented vehicle. The highest cross-correlation between the bridge response from an elementary analytical model and the experimental one, acquired by a moving force-balance accelerometer, yields the unknown model parameter. The effect of vehicle-bridge interaction is removed by proper filtering of the signals. Specifically, the authors estimate the elastic moduli of seven prestressed concrete bridges and compare a subset of the results to the outcomes of static load tests carried out on the same bridges. There is a good correlation between the elastic moduli from the instrumented vehicle and those from static load tests: the method grasps the approximate value of the elastic modulus of concrete. Still, the data do not return an excellent match due to the bias in the estimation of the deflection shape—the paper remarks on the issues faced during the experimental tests and proposes possible enhancements of these procedures.

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Bridge damping identification by vehicle scanning method

Cited by 78 publications

References 36 publications

Feasibility Study of Tractor-Test Vehicle Technique for Practical Structural Condition Assessment of Beam-Like Bridge Deck

Feasibility Study of Tractor-Test Vehicle Technique for Practical Structural Condition Assessment of Beam-Like Bridge Deck

Bridge identification and damage detection using contact point response difference of moving vehicle

Experimental Estimation of the Elastic Modulus of Concrete Girders from Drive‐By Inspections with Force‐Balance Accelerometers

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