This paper presents a methodology that gives an opportunity to reliably perform a primary analysis of the dynamic effects and features of the span structures’ interaction for the bridge structures and rolling stock at the design speeds of up to 420 km/h. The paper determines the dependences of the influence of the bridges split beam span structures’ parameters on the nature and magnitude of their dynamic response when exposed to high-speed rolling stock. Practical recommendations on the rational designation of the main parameters of the structure (vertical stiffness, mass, range of natural vibration frequencies) are given. It is recommended to assign the main design parameters at the initial design stage in accordance with the limitations of the split beam span structures’ natural vibration frequencies lower limit for the design train speeds up to 420 km/h. The proposed restrictions allow to assign the main parameters of the structure at the initial design stage and minimize the dynamic effect of a moving load. When determining the main design parameters of span structures, it is necessary to take into account the recommendations for assigning the minimum required mass of span structures for various spans. Taking into account the proposed dependencies significantly reduces labor costs for designing and performing dynamic calculations.
Optimization of the Main Parameters for the Bridge Spans on High-Speed Railways
Lect. Notes in Networks, Syst.
International Scientific Siberian Transport Forum ; 2021 May 11, 2021 - May 14, 2021
International Scientific Siberian Transport Forum TransSiberia - 2021 ; Chapter : 66 ; 607-616
2022-03-19
10 pages
Article/Chapter (Book)
Electronic Resource
English
Engineering Index Backfile | 1942
Design of the Main Spans of the Chongqing, China, Caiyuanba Bridge
Transportation Research Record | 2005
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