| Issue |
MATEC Web Conf.
Volume 313, 2020
Dynamics of Civil Engineering and Transport Structures and Wind Engineering – DYN-WIND’2020
|
|
|---|---|---|
| Article Number | 00001 | |
| Number of page(s) | 11 | |
| DOI | https://doi.org/10.1051/matecconf/202031300001 | |
| Published online | 16 April 2020 | |
Suitability assessment of the traditional unified railway bridge girders for high-speed traffic
1
Emperor Alexander I St.Petersburg State Transport University, Bridge Department, 190031 St.Petersburg, Russia
2
Emperor Alexander I St.Petersburg State Transport University, Mechanical laboratory named prof. N.A. Belelubsky, 190031 St.Petersburg, Russia
* Corresponding author: leonid_dyachenko@mail.ru
The article deals with the parameters of high-speed trains effect on the unified simple-span girder reinforced concrete bridge superstructures on conventional railways using a simplified methodology of determining maximum vertical accelerations and live load dynamic factors. It is noted that the dynamic additions to the stress-strain behavior components (bending moments, transverse force and vertical sags) differ from each other. The presented methodology of dynamic factors determination helps to make a dynamic calculation and to identify general forces in simple-span girder superstructures without numerical simulation and straightforward dynamic analysis, which greatly reduces labor intensity of the design works. Based on the dynamic calculation results, a conclusion is made that the unified simple-span girder reinforced concrete bridge superstructures can be applied on high-speed railways, and the scope of their application is specified.
© The Authors, published by EDP Sciences, 2020
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