Dynamic Stability Analysis of High-Speed Trains Moving over Sea-Cross Bridge subjected to Rail Irregularities
Publish place: International Journal of Coastal, Offshore and Environmental Engineering، Vol: 5، Issue: 2
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
View: 355
This Paper With 14 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_IJCOE-5-2_006
تاریخ نمایه سازی: 11 مهر 1400
Abstract:
Dynamic performance of the ۳D train–bridge system (TBW model) subjected to different hydrodynamic loads and applying AAR track irregularity is established in this study. By taking a continuous bridge (۳۲ + ۴۸ + ۳۲) m with box girders as a case study, the dynamic responses of the bridge which is under train passing and subjected to several sea hydrodynamic loads are analyzed. The substructure of the bridge includes four concrete solid piers with rectangular sections and piers are fixed at seabed. Piers and decks are designed and analyzed based on dynamic finite elements methods, and hydrodynamic forces are applied on piers according to Morisonchr('۳۹')s theory. Also, car body is modeled by a ۲۷-DoFs dynamic system. Model validation has been performed with another research by considering vessel collision load. Then, the dynamic responses of the bridge and the running safety indices of the train on the bridge under several types of sea wave states when train speed is ۳۰۰ km/h analyzed. Results of TBWchr('۳۹')s sensitive analyzes have shown the importance of sea-states conditions for train safe and comfortable running. Also, irregularity has an obvious effect on the dynamic responses of the bridge. It has greater effect on vertical acceleration and displacement than horizontal ones in presence of hydrodynamic load. Combination of these two phenomena (wave and irregularity) jeopardizes the running safety of train when crossing the bridge.
Keywords:
Authors
Amin Razzaghi Kalajahi
Iran University of Science and Technology
Morteza Esmaeili
Iran University of Science and Technology
Jabbar Ali Zakeri
Iran University of Science and Technology
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :