A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Evolutionary power spectrum density of earthquake-induced rail geometric irregularities
China’s high-speed railway (HSR) construction has gradually extended to earthquake-vulnerable areas in recent years. However, there is currently a lack of studies on the characteristics of earthquake-induced rail irregularities, making it impossible to ascertain the threshold of post-earthquake train running speed. Taking the multi-span HSR simply supported girder bridge of a CRTS II-type track system as the research focus, the distribution models for residual rail irregularity under random seismic actions have been analyzed in this study. The statistical distribution of the evolutionary power spectrum density (EPSD) of the residual rail irregularity set is also explored. Based on the obtained results, the EPSD of earthquake-induced rail geometric irregularity was calculated, and a time-domain sample for earthquake-induced rail geometric irregularity was developed. Finally, the equating method of earthquake-induced rail geometric irregularity under different span numbers was discussed, and a method for fitting earthquake-induced rail geometric irregularity was proposed.
Evolutionary power spectrum density of earthquake-induced rail geometric irregularities
China’s high-speed railway (HSR) construction has gradually extended to earthquake-vulnerable areas in recent years. However, there is currently a lack of studies on the characteristics of earthquake-induced rail irregularities, making it impossible to ascertain the threshold of post-earthquake train running speed. Taking the multi-span HSR simply supported girder bridge of a CRTS II-type track system as the research focus, the distribution models for residual rail irregularity under random seismic actions have been analyzed in this study. The statistical distribution of the evolutionary power spectrum density (EPSD) of the residual rail irregularity set is also explored. Based on the obtained results, the EPSD of earthquake-induced rail geometric irregularity was calculated, and a time-domain sample for earthquake-induced rail geometric irregularity was developed. Finally, the equating method of earthquake-induced rail geometric irregularity under different span numbers was discussed, and a method for fitting earthquake-induced rail geometric irregularity was proposed.
Evolutionary power spectrum density of earthquake-induced rail geometric irregularities
Yu, Jian (author) / Jiang, Lizhong (author) / Zhou, Wangbao (author) / Liu, Xiang (author) / Lai, Zhipeng (author)
Structure and Infrastructure Engineering ; 20 ; 433-448
2024-04-02
16 pages
Article (Journal)
Electronic Resource
English
Wheel-Rail Contact Elements Incorporating Rail Irregularities
| British Library Conference Proceedings | 2003
Seismic-Induced Geometric Irregularity of Rail Alignment under Transverse Random Earthquake
| Taylor & Francis Verlag | 2023
Wheel-rail contact elements incorporating irregularities
| Tema Archive | 2005
Contolling irregularities in rail to reduce noice
| IuD Bahn | 2010
The earthquake resistant design of buildings having structural irregularities
| British Library Conference Proceedings | 1997