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Gradual deterioration behavior of the load-bearing strength of main cable wires in a suspension bridge [Elektronski vir]Chong, Hailang ...The main cable is the primary load-bearing component of a long-span multi-tower suspension bridge. The interaction between a dead load, vehicle load, wind load, and the corrosion environment leads ... the main cable wire to exhibit tribo-corrosion-fatigue behaviors. This behavior causes wire wear and deterioration, as well as a reduction in the effective cross-sectional area. This leads to the gradual deterioration of the wire’s load-bearing strength and seriously affects the load-bearing safety of the main cable. In order to ensure the safety of suspension bridges, it is critical to investigate the gradual deterioration behavior of the main cable wire’s load-bearing strength. A wire tribo-corrosion-fatigue test rig was established to test the wire under different friction pairs (saddle groove or parallel wires). The cross-sectional failure area of the wire with different pairs was obtained by super-depth electron microscopy and calculation. The damage degree evolution model and the deterioration model of the wire load-bearing strength were established by combining the theory of damage mechanics and the finite element method. The results show that, as contact and fatigue loads increase, so does the cross-sectional failure area of the fatigue steel wire. The fatigue wire’s damage degree has a good quadratic function relationship with fatigue cycles. The damage degree of the wire increases and the load-bearing strength decreases with increasing contact load and fatigue load. The load-bearing strength of the wire changes little at the beginning and decreases with increasing fatigue cycles. The results have fundamental significance for the life prediction of the main cable wires of suspension bridges.Source: Applied sciences [Elektronski vir]. - ISSN 2076-3417 (Vol. 13, iss.1, 2023, 1-16 str.)Type of material - e-article ; adult, seriousPublish date - 2023Language - englishCOBISS.SI-ID - 201388035
Author
Chong, Hailang |
Wang, Dagang |
Wang, Bo, strojnik |
Shen, Xiaoman |
Abdel Wahab, Magd
Topics
main cable |
parallel steel wire |
load-bearing strength
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Chong, Hailang | ![]() |
Wang, Dagang | ![]() |
Wang, Bo, strojnik | ![]() |
Shen, Xiaoman | ![]() |
Abdel Wahab, Magd | 59211 |
Source: Personal bibliographies
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