철도용 유압식 완충차막이 충격성능 평가

초록

Railway buffer stop prevents railway vehicles from going past the end of a physical section of track. The buffer stop is not very common in Korea while widely used in European railway stations. Nowadays, Korean railway operation companies need the buffer stop with energy absorbing function increasingly. There are several types of buffer stop with energy absorbing function such as frictional buffer stops, hydraulic buffer stop, deformation tube type buffer stop, etc. Hydraulic buffer stop usually has high energy absorption capacity and is reusable. In this study, the buffer stop uses hydraulic buffer with a energy capacity of 160 kJ. Buffer stop is designed to absorb designated crash energy under structural limit force. Impact test has been performed to verify the impact characteristics of the hydraulic buffer with increasing impact speed. The impact speed of the impacting wagon is determined considering the mass of an impacting wagon. The mass of the impacting wagon is 114 tons which is same with the mass of the train set. The test result includes the impact force, stroke, energy absorption. The impact force and energy absorption monotonically increases as the impact speed increases.