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- Title
黄土地区高速铁路路基环境振动现场测试分析.
- Authors
张永福; 李 斌; 白广明; 罗贯霄; 范祥辉; 刘 花; 张文强
- Abstract
In order to study the vibration characteristics of the surrounding environment caused by vehicles in subgrade section in loess area, the vertical vibration response of high-speed trains passing through embankment section and cutting section of Baoji-Lanzhou High-speed Railway is measured, and the results are compared and evaluated in terms of time domain and frequency domain. The research results show that: the vibration frequency of embankment section and the ground around the cutting section above 40 Hz attenuates fast, while that of 10~20 Hz decreases slowly in loess area; the amplitude of vibration acceleration of each frequency band decreases with the increase of distance; the main frequency of some 40 Hz in the embankment section and cutting section corresponds to the peak frequency of wheel-rail force, the main frequency of about 10 Hz and 20 Hz corresponds to the wheel axle loading frequency, and their magnitudes are related to axle weight, train running speed, fixed axle base of the train and the distance between bogies of adjacent vehicles; the main frequency of about 90 Hz is related to the distance between rail sleepers; with the increase of the distance from the center line of the outer rail, the attenuation characteristics of Z vibration level on the ground around the embankment section and cutting section in loess area show a logarithmic law; the vibration intensity of the ground around the cutting section is always higher than that in the embankment section in the same range from the center line of the outer rail.
- Subjects
BOGIES (Vehicles); RUNNING speed; FREQUENCIES of oscillating systems; HIGH speed trains; EMBANKMENTS; SOIL vibration
- Publication
Railway Standard Design, 2022, Vol 66, Issue 7, p172
- ISSN
1004-2954
- Publication type
Article
- DOI
10.13238/j.issn.1004-2954.202101180007