کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4924446 | 1430850 | 2016 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of vertical ground motion on earthquake-induced derailment of railway vehicles over simply-supported bridges
ترجمه فارسی عنوان
اثر حرکت زمین عمودی بر روی زلزله ناشی از رانندگی وسایل نقلیه راه آهن از طریق پل های ساده پشتیبانی شده است
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کلمات کلیدی
وسیله نقلیه راه آهن، پلانت، لرزش همراه با قطار، رها کردن حرکت زمینی عمودی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
The running safety of railway vehicles on bridges can be negatively affected by earthquake events. This phenomenon has traditionally been investigated with only the lateral ground excitation component considered. This paper presented results from a numerical investigation on the contribution of vertical ground motion component to the derailment of vehicles on simply-supported bridges. A full nonlinear wheel-rail contact model was used in the investigation together with the Hertzian contact theory and nonlinear creepage theory, which allows the wheel to jump vertically and separate from the rail. The wheel-rail relative displacement was used as the criterion for derailment events. A total of 18 ground motion records were used in the analysis to account for the uncertainty of ground motions. The results showed that inclusion of vertical ground motion will likely increase the chance of derailment. It is recommended to include vertical ground motion component in earthquake induced derailment analysis to ensure conservative estimations. The derailment event on bridges was found to be more closely related to the deck acceleration rather than the ground acceleration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Sound and Vibration - Volume 383, 24 November 2016, Pages 277-294
Journal: Journal of Sound and Vibration - Volume 383, 24 November 2016, Pages 277-294
نویسندگان
Zhibin Jin, Shiling Pei, Xiaozhen Li, Hongyan Liu, Shizhong Qiang,