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Interaction Between Tracks and Continuous Rigid-Frame Bridge Carrying High-Speed Railway
For the study on interaction between continuous rigid-frame bridge and track under complex load, a simulation model for (72 + 128 + 72) m large-span continuous rigid-frame bridge and double-line ballastless track system was established. The interaction between large-span continuous rigid-frame bridge and track was revealed under the actions of thermal effects, live load, train braking, wind, uneven settlement, shrinkage and creep as well as earthquake. Influence of design parameters was also discussed, and these parameters included the temperature rise of beam and pier, vertical temperature disparity of bridge, loading position of live load, regional basic wind pressure, uneven settlement, installing track time, and spectral characteristics of seismic waves. The study shows the following: For the reason that expansion length of the continuous rigid-frame bridge and the pier rigidity are almost the same, envelope of rail stress is symmetrically distributed under the loads of thermal effects and gradient, bending, shrinkage and creep as well as earthquake, while the envelope of rail stress of braking and wind is inverse symmetry; the maximal stress caused by all kinds of loads related above is near the abutment; greater vertical displacement of the rail existed at the mid-span of the continuous rigid-frame bridge under the loads of temperature gradient and uneven settlement; for the action of shrinkage and creep as well as earthquake, there is huge shear force for the piers, which exceeds 40,000 kN.
Interaction Between Tracks and Continuous Rigid-Frame Bridge Carrying High-Speed Railway
For the study on interaction between continuous rigid-frame bridge and track under complex load, a simulation model for (72 + 128 + 72) m large-span continuous rigid-frame bridge and double-line ballastless track system was established. The interaction between large-span continuous rigid-frame bridge and track was revealed under the actions of thermal effects, live load, train braking, wind, uneven settlement, shrinkage and creep as well as earthquake. Influence of design parameters was also discussed, and these parameters included the temperature rise of beam and pier, vertical temperature disparity of bridge, loading position of live load, regional basic wind pressure, uneven settlement, installing track time, and spectral characteristics of seismic waves. The study shows the following: For the reason that expansion length of the continuous rigid-frame bridge and the pier rigidity are almost the same, envelope of rail stress is symmetrically distributed under the loads of thermal effects and gradient, bending, shrinkage and creep as well as earthquake, while the envelope of rail stress of braking and wind is inverse symmetry; the maximal stress caused by all kinds of loads related above is near the abutment; greater vertical displacement of the rail existed at the mid-span of the continuous rigid-frame bridge under the loads of temperature gradient and uneven settlement; for the action of shrinkage and creep as well as earthquake, there is huge shear force for the piers, which exceeds 40,000 kN.
Interaction Between Tracks and Continuous Rigid-Frame Bridge Carrying High-Speed Railway
Lecture Notes in Civil Engineering
Tutumluer, Erol (editor) / Chen, Xiaobin (editor) / Xiao, Yuanjie (editor) / Yan, Bin (author) / Zhang, Gaoxiang (author) / Xie, Haoran (author)
Advances in Environmental Vibration and Transportation Geodynamics ; Chapter: 27 ; 429-444
2020-04-08
16 pages
Article/Chapter (Book)
Electronic Resource
English
Rigid frame-continuous steel-concrete hybrid beam railway bridge structure
| European Patent Office | 2022
| European Patent Office | 2020