Review on the Service Safety Assessment of Main Cable of Long Span Multi-Tower Suspension Bridge

Wang, Dagang; Ye, Jihong; Wang, Bo; Wahab, Magd Abdel

doi:10.3390/app11135920

Cited by 21 publications

(13 citation statements)

References 20 publications

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“…Length (m) Specific Frictional Head Loss (Pa/m) 982 27.94 1 35.17 1 The length of the main cable after removing the influence of local resistance at the inlet and outlet.…”

Section: Resistance Loss Along the Main Cable (Pa)mentioning

confidence: 99%

“…Suspension bridges have become essential structures for spanning rivers and seas enabled by continuous advancements in bridge design and construction technology. The main cable is the principal load-bearing structure of the suspension bridge, and the quality of its anticorrosion is closely linked to the service lifetime of the bridge [1]. During transportation and construction, rainwater may wet the main cable, which cannot drain naturally after completion due to its structural limitations, leading to the retention of water between the wires of the main cable [2].…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of Airflow in the Main Cable of Suspension Bridge with FPM Model

et al. 2023

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The main cable of suspension bridges is subject to corrosion and requires advanced anti-corrosion technology. Consequently, the internal airflow of the main cable has become a significant research focus. This study employs image processing and machine learning to analyze the cross-sectional images of the main cable and reveals the distribution characteristics of pores and fractures within the main cable cross-section. The numerical simulation model of the main cable is divided into inner and outer parts based on porosity, with porosity levels of 18.16% and 32.11%, respectively. Fractures randomly occurred in the inner part, with a probability of 31.37%. A simulation model based on fractured porous media (FPM) is developed, which innovatively incorporates the fracture flow model into the numerical simulation of the internal airflow of the main cable. The numerical simulation clearly explores the intricate details of the internal flow field of the main cable, revealing that the existence of fractures has a great impact on the internal flow field of the main cable. Additionally, the relative deviation of specific frictional head loss between the field experiment and numerical simulation is about 6.83%, indicating that the numerical simulation results are relatively reliable.

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“…Length (m) Specific Frictional Head Loss (Pa/m) 982 27.94 1 35.17 1 The length of the main cable after removing the influence of local resistance at the inlet and outlet.…”

Section: Resistance Loss Along the Main Cable (Pa)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Airflow in the Main Cable of Suspension Bridge with FPM Model

et al. 2023

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Section: Introductionmentioning

confidence: 99%

“…The long-span multi-tower suspension bridges are widely used in the construction of river and sea crossing bridges [1]. The main cable with the characteristics of high cost and difficult replacement is a flexible load-bearing component, which is the "lifeline" of the suspension bridge [1,2]. The bearing safety and anti-sliding safety of the main cable are directly related to the structural safety of the suspension bridge [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…The main cables are subjected to wind loads in different directions due to strong wind [5]. The effects of ambient temperature changes and sunlight radiation lead to significant temperature gradients in the temperature field inside and on the main cable (due to the hysteresis of the temperature change inside the main cable), which causes changes in the internal force and the shape of the main cable [1,3]. In addition, the main cables shared by road and railway are subjected to dead loads (deck systems, stiffening beams, main cables, hangers) and live loads (cars, railway trains) through hangers and cable clamps.…”

Section: Introductionmentioning

confidence: 99%

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Tribo-corrosion interaction of the parallel steel wires in the suspension bridges

Wang

Chong

et al. 2023

Friction

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The effect of contact load and relative displacement on tribo-corrosion interaction of parallel steel wires of main cable in the suspension bridge was investigated in this study. A self-made tribo-corrosion test bench was employed to conduct tribo-corrosion tests of parallel steel wires in 3.5% (wt%) NaCl solution and deionized water under different contact loads and different relative displacements. The friction coefficient and wear coefficient of wires were presented. Electrochemical corrosion behavior (Tafel polarization curves, Nyquist diagram, and equivalent circuit diagram) was characterized by electrochemical analyzer. Wear morphology was observed by scanning electron microscope. Wear volume loss and corrosion-wear interaction were quantitatively demonstrated by high-precision weighing balance. The results show that the electrochemical corrosion ability of the steel wires increases with the increase of the contact load or relative displacement. The increased contact load or relative displacement increases the volume loss of corrosion-wear and pure wear, but decreases the wear coefficient. The wear mechanisms in 3.5% NaCl solution are adhesive wear, abrasive wear, and corrosive wear as compared to adhesive wear and abrasive wear in deionized water under different contact loads. The wear mechanisms of parallel steel wires are slightly different under different relative displacements. But the main wear mechanisms are similar to that under different contact loads. The interaction effects of corrosion and wear produced by the contact load and relative displacement are all the synergistic effects.

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Research on Critical Technology of Cable Hoisting Construction of Large-Span Bridge

Xiong,

Jiang,

Liu

et al. 2024

Lecture Notes in Civil Engineering

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Review on the Service Safety Assessment of Main Cable of Long Span Multi-Tower Suspension Bridge

Cited by 21 publications

References 20 publications

Numerical Simulation of Airflow in the Main Cable of Suspension Bridge with FPM Model

Numerical Simulation of Airflow in the Main Cable of Suspension Bridge with FPM Model

Tribo-corrosion interaction of the parallel steel wires in the suspension bridges

Research on Critical Technology of Cable Hoisting Construction of Large-Span Bridge

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