Static and Dynamic Structural Performances of a Special-Shaped Concrete-Filled Steel Tubular Arch Bridge in Extreme Events Using a Validated Computational Model

Dong, Jun; Cao, Sasa; Han, Xiaolin; Miao, Changqing

doi:10.1007/s13369-017-2771-0

Cited by 12 publications

(4 citation statements)

References 20 publications

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“…However, we should not disregard the fact that some discrepancies still exist between measured and computed modal frequencies after parameter identification. These discrepancies are probably caused by (1) the FE model’s basic configuration partly deviates from the physical truth, for example, the soil–pile–structure interaction is not considered (Cheng et al, 2016) and (2) the ambient modal test might be inaccurate due to many influences, for example, the measurement noise, the temperature variation, the effect of the modal identification method, and so on (Cheng et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

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Beam-end stiffness identification for a structural health monitoring-oriented finite-element transmission tower model using effective optimization techniques

Peng

Khan²,

Dong

2018

Advances in Structural Engineering

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As an important issue for establishing structural health monitoring–oriented finite element models for large steel pylons, identification of beam-end stiffness draws the attention of the engineering circle. Since the methods adopted by other researchers for parameter identification are impracticable, a beam-end stiffness identification method which combines in situ measurements for the structure’s global dynamic properties with effective multi-variable optimization methods is utilized to improve the accuracy of established finite element models. A 131-m-high large transmission tower is employed as a case study to validate the method. In situ measurements for the tower’s global dynamic characteristics are performed, and identifications of Young’s modulus for 20 semi-rigid connections distributed along each of the tower’s four main chords are undertaken utilizing three multi-variable optimization methods, that is, the first-order method, the subproblem approximation method, and the response surface method. Static numerical simulations on two detailed connection models prove that multiple uncertain parameters can be correctly and simultaneously identified when appropriate optimization techniques are chosen. Finally, the influence of beam-end stiffness identification on the structural health monitoring–oriented structural safety assessment is revealed by calculating the wind-induced dynamic structural responses for the single tower and the transmission tower-line system, which indicates that identification of the correct beam-end stiffness and updating the structural health monitoring–oriented finite element model are indispensable procedures for reliable structural health monitoring.

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Section: Resultsmentioning

confidence: 99%

“…for example, the measurement noise, the temperature variation, the effect of the modal identification method, and so on (Cheng et al, 2017). 5.…”

Section: Resultsmentioning

confidence: 99%

Beam-end stiffness identification for a structural health monitoring-oriented finite-element transmission tower model using effective optimization techniques

Peng

Khan²,

Dong

2018

Advances in Structural Engineering

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“…The asymmetric spatial butterflyshaped steel arch bridge was analyzed in [33,34], which shows that asymmetry does not change the rationality of the bridge structure. Based on the Yingzhou Bridge, Cheng [35] and Ma [36] developed a validated simplified FE model, and then the bridge's stability, ultimate load-carrying capacity, and seismic performance were studied, considering the original design and several modified designs. Kohlmeyer et al proposed an asymmetrical deck-type CFST arch bridge to evaluate the influence of the general arrangement on its stability.…”

Section: Introductionmentioning

confidence: 99%

Research on the Mechanical Performance of a Mountainous Long-Span Steel Truss Arch Bridge with High and Low Arch Seats

Tan,

Shi,

Liu

et al. 2023

Buildings

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The Loushui River Bridge is a mountainous long-span steel truss arch bridge with high and low arch seats. The design and construction of the bridge follow the principle of minimizing environmental damage and promoting sustainable development. In this article, the mechanical performance of this bridge is investigated experimentally and numerically at both the construction and operation stages. A series of validated finite element models were established for linear and nonlinear analyses by introducing geometric imperfections, geometric nonlinearities, and material nonlinearities. Then, several optimized models based on different types of design are compared with the original structure. The results indicate that the stability of the asymmetric bridge met the design requirements in both the construction and operation stages. However, the lateral stability and stiffness of the asymmetric bridge are weak due to the wind hazard that occurred in its mountain ravine. The out-of-plane instability from the short half-arch is the dominant failure mode, and the weakest area is where the arch ribs intersect with the bridge deck. It can be solved by adding more cross bracings without affecting the clearance above the bridge deck or by improving the material intensity of the arch.

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“…A number of beautifully shaped arch bridges have emerged in the world. [3][4][5] The butterfly-shaped concrete-filled steel tube arch bridge is one of them with unique esthetics. However, such arch bridges have complex stress forms, due to statically indeterminate, irregular shape, material and geometrical nonlinearity.…”

Section: Introductionmentioning

confidence: 99%

Static and dynamic evaluation of a butterfly-shaped concrete-filled steel tube arch bridge through numerical analysis and field tests

Ren

Zhu

et al. 2021

Advances in Mechanical Engineering

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The butterfly-shaped concrete-filled steel tube (CFST) arch bridge is an irregular bridge with unique esthetics. In this paper, this new shape of CFST arch bridge is introduced, and a refined three-dimensional finite element model (FEM) is established to evaluate static and dynamic behavior of the bridge. In order to reduce model errors, the FEM is calibrated according to numerical analysis and field tests. Static calculation results show that the butterfly-shaped bridge has good structural performance. The bending moment and axial force of the arch ribs increase when the camber angle of suspender changing from 15° to 50°. Dynamic test is carried out by ambient vibration testing under traffic and wind-induced excitations. The modal parameters of the bridge were calculated by the stochastic subspace identification method in the time domain. In terms of natural frequencies and mode shapes, the FEM analysis was validated by experimental modal analysis. The updated model thus obtained can be treated as a baseline finite element model, which is suitable for long term monitoring and safety evaluation of the structure in different severe circumstances such as earthquakes and wind loading in future.

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Static and Dynamic Structural Performances of a Special-Shaped Concrete-Filled Steel Tubular Arch Bridge in Extreme Events Using a Validated Computational Model

Cited by 12 publications

References 20 publications

Beam-end stiffness identification for a structural health monitoring-oriented finite-element transmission tower model using effective optimization techniques

Beam-end stiffness identification for a structural health monitoring-oriented finite-element transmission tower model using effective optimization techniques

Research on the Mechanical Performance of a Mountainous Long-Span Steel Truss Arch Bridge with High and Low Arch Seats

Static and dynamic evaluation of a butterfly-shaped concrete-filled steel tube arch bridge through numerical analysis and field tests

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