Estimating design positions of suspension bridge tower saddles in the completed bridge state: An analytical approach

Article Engineering, Civil

Multifrequency-based tension intelligent identification for cables with unknown end-restraints using a metaheuristic algorithm

Xiaoming Wang et al.

Summary: In this study, a multifrequency-based intelligent multiparameter identification method is proposed for the tension identification of a cable equipped with a single sensor. The method establishes an optimization objective function based on a cable dynamic model considering various factors, and solves the model using a finite difference method with the help of an efficient metaheuristic algorithm. Comparative studies including algorithm tests and tension identification tests verify the accuracy and efficiency of the method.

STRUCTURES (2023)

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Article Engineering, Civil

Analytical investigation of the main cable bending stiffness effect on free flexural vibration of suspension bridges with a 3D cable system

Yuan Sun et al.

Summary: This paper proposes a dimensionless continuum model to study the bending stiffness effect of the 3D cable system on suspension bridges' free flexural vibration. The model's precision is validated using the finite element method, and parametric comparative studies are conducted between 3D and 2D cable system suspension bridges. The results show that the bending stiffness effects of the 3D cable system are more evident on the high order modes and anti symmetric modes of suspension bridges.

STRUCTURES (2022)

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Article Engineering, Civil

Reasonable completed state evaluation for hybrid cable-stayed suspension bridges: An analytical algorithm

Wen-ming Zhang et al.

Summary: Hybrid cable-stayed suspension bridges have broad application prospects and the paper proposes an analytical approach to determine their reasonable completed bridge state. The proposed method is simple, accurate, and has a clearly defined physical meaning. Its effectiveness is verified in an asymmetric bridge.

STRUCTURES (2022)

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Article Engineering, Civil

Static characteristics analysis of three-tower suspension bridges with central buckle using a simplified model

Hongyou Cao et al.

Summary: This study proposes an analytical model for predicting the structural responses of three-tower suspension bridges with central buckle under vehicle loads and examines the effect of the central buckle on suppressing the mid-tower effect. The parametric investigations show that the central buckle can significantly improve the performance of three-tower suspension bridges by enhancing their stiffness and reducing the unbalanced tension of the main cable on both sides of the mid-tower.

ENGINEERING STRUCTURES (2021)

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Article Environmental Sciences