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• W3176522808 endingPage "003685042110283" @default.
• W3176522808 startingPage "003685042110283" @default.
• W3176522808 abstract "To study subway turnouts' adaptability to steep gradients, a finite element model of a metro No. 9 simple turnout was established. The main works include: (1) The train's most unfavourable loading condition was modelled. (2) The turnout's longitudinal displacement and stress were analysed with different gradients under the train braking load, temperature change load and a combination of the two, to determine the structure's safety and stability under the most unfavourable working conditions. (3) The turnout structure's cumulative longitudinal deformation under reciprocating load was studied. Both a fastener longitudinal resistance-displacement experiment under reciprocating load and a numerical simulation of No. 9 turnout modelled by the finite element modelling software, ANSYS, were carried out to study the gradient's influence on the turnout's longitudinal mechanical characteristics. (1) The turnout's longitudinal displacement and stress increase linearly with an increase in gradient and temperature change, both of which are unfavourable to the turnout structure. As the gradient increases from 0‰ to 30‰, the longitudinal stress and displacement increase by more than 10%. (2) The turnout's rail strength and displacement on a 30‰ slope under the most unfavourable load conditions are within the specification limitations. (3) Under reciprocating load, the fastener longitudinal stiffness decreases and the maximum and residual longitudinal displacement of the switch rail increase; an increased gradient intensifies these effects on the turnout." @default.
• W3176522808 created "2021-07-05" @default.
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• W3176522808 date "2021-04-01" @default.
• W3176522808 modified "2023-10-16" @default.
• W3176522808 title "Research on the longitudinal mechanical behaviours of subway turnouts of large slope under train braking force" @default.
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• W3176522808 doi "https://doi.org/10.1177/00368504211028369" @default.
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• W3176522808 hasPublicationYear "2021" @default.
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