Structural flexibility identification and fast-Bayesian-based uncertainty quantification of a cable-stayed bridge

Xia, Qi; Tian, Yongding; Cai, Dexu; Zhang, Jian

doi:10.1016/j.engstruct.2020.110616

Cited by 13 publications

(2 citation statements)

References 45 publications

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“…Tian et al [24] identifed the structural fexibility based on an impact vibration test and predicted the defections of a threespan concrete box girder bridge under static loads. Te defection prediction under any static load by impact vibration testing has been verifed in many kinds of literature [25][26][27]. It is a very efective and reliable method.…”

Section: Introductionmentioning

confidence: 99%

Hinge Joints Performance Assessment of a PC Hollow Slab Bridge Based on Impact Vibration Testing

Xia

Zhou

Cheng

et al. 2023

Structural Control and Health Monitoring

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Hinge joint performance during the operation of prefabricated prestressed concrete (PC) hollow slab bridges is critical to ensure their lateral collaborative working condition and safe serviceability. Traditional performance identification of hinge joints mainly relies on manual inspection, which is inefficient and inaccurate. At the same time, existing indexes (such as acceleration and strain) can only qualitatively detect the damage to hinge joints. This study proposes a novelty detection method based on impact vibration testing to rapidly perform the quantitative assessment of the working condition of the hinge joints. The relationship between hinge joint performance and lateral load distribution (LLD) is first derived in detail by theoretical analysis. And then, the quantitative analysis of collaborative performance is converted to the identification of the LLD influence line, which is innovatively established by the lateral flexibility of the hollow slab bridge. The effectiveness of the proposed method is verified through a multibeam model using ABAQUS software, and the lateral collaborative working relationship between slabs is simulated using the connector elements. Furthermore, the LLD influence lines and hinge joints performance of a PC hollow slab Yanhu Bridge are evaluated based on the impact vibration testing with sensor lateral arrangement strategy. The detection results show that the proposed method can quickly and accurately identify the damage location and the stiffness loss of hinge joints.

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Section: Introductionmentioning

confidence: 99%

Hinge Joints Performance Assessment of a PC Hollow Slab Bridge Based on Impact Vibration Testing

Xia

Zhou

Cheng

et al. 2023

Structural Control and Health Monitoring

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“…Park et al (2019) researched a relationship between the spring constant and the bridge responses (deflections/ slopes) to calculate equivalent rotational spring constants. Xia et al (2020a) estimated a long-span bridge boundary longitudinal restraint stiffness based on long-term health monitoring data. The above method is still not easily and quickly to quantify the bearing stiffness.…”

Section: Introductionmentioning

confidence: 99%

Bearing condition assessment of a simply elastic supported beam based on impact vibration testing

Xia,

Zhou,

Yang

et al. 2024

Advances in Structural Engineering

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The mechanical properties of bridge bearings gradually deteriorate over time, resulting from daily traffic loading and harsh environmental conditions. However, efficient detection of in-service bridge bearings is still challenging, especially in quantifying support stiffness. This study presents a bridge bearing condition assessment framework of a simply elastic supported beam based on impact vibration testing and structural flexibility identification. Firstly, the dynamic response equation of a simply supported beam with elastic boundary constraints is established. The modal orthogonality of Euler-Bernoulli beams and the corresponding overall matrix of undetermined coefficients are derived using the separate variable method. Subsequently, the flexibility matrix of the simply elastic supported beam is derived and verified in the cases of forward and inverse analysis, respectively. Furthermore, the vertical and rotational stiffness of the bearings are established based on the structural flexibility matrix. Finally, experimental verification is performed to identify the flexibility and the vertical support stiffness of the simply elastic supported beam based on impact vibration tests. The results indicate that the proposed the bearing condition assessment framework can straightforwardly quantify support stiffness.

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Temperature-based anomaly diagnosis of truss structure using Markov chain-Monte Carlo method

Liu

et al. 2022

J Civil Struct Health Monit

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Structural flexibility identification and fast-Bayesian-based uncertainty quantification of a cable-stayed bridge

Cited by 13 publications

References 45 publications

Hinge Joints Performance Assessment of a PC Hollow Slab Bridge Based on Impact Vibration Testing

Hinge Joints Performance Assessment of a PC Hollow Slab Bridge Based on Impact Vibration Testing

Bearing condition assessment of a simply elastic supported beam based on impact vibration testing

Temperature-based anomaly diagnosis of truss structure using Markov chain-Monte Carlo method

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