TY - JOUR ID - 72484 TI - Vibration of Train-Rail-Bridge Interaction Considering Rail Irregularity with Arbitrary Wavelength JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - Yang, Hongyin AU - Chen, Zhijun AU - Zhang, Hailong AD - fghjkl, edfgh AD - School of Civil Engineering & Mechanics, Huazhong University of Science & Technology Y1 - 2015 PY - 2015 VL - 28 IS - 4 SP - 516 EP - 522 KW - Train KW - Rail KW - bridge interaction KW - rail random irregularity KW - wavelength interval KW - sensitive wavelength KW - Dynamic Response KW - high KW - speed railway bridge DO - N2 - A generation method for the rail random irregularity with arbitrary wavelength interval (WI) is developed, and its accuracy and efficiency are demonstrated. Then a moving wheel-rail-bridge interaction element is derived to establish the finite element equations of motion for the train-rail-bridge interaction system, and the flow chart of assembly and calculation for the system equations is given. According to the sub-interval principle, the influences of the irregularities with the large WI and the sub-intervals on the dynamic responses are analyzed by a numerical example, and the sensitive WI of each response is discussed. The results indicate that the bridge acceleration and the contact force are both more sensitive to the irregularity with WI (1~5 m). The irregularity with WI (0.1~1 m) has less influence on the car body acceleration but mainly contributes to the rail acceleration. However, all the irregularities with wavelengths in interval (1~150 m) can have significant influences on the car body acceleration. Meanwhile, the transient jump of wheel can be simulated and should be taken into account for the derailment risk assessment. UR - https://www.ije.ir/article_72484.html L1 - https://www.ije.ir/article_72484_3d8ee29e6ca11b3939cebe6f3a141ec7.pdf ER -