The Security Research of Urban Mass Transit Based on the Law of Rail Consumption

摘要

Many methods like increasing train speed, shorten the headway, increasing the load of vehicles can be conducted to meet the increasing demands of urban mass transit. However, with failure and wear of rail growing as the aftereffect, these countermeasures may impact the life of rail and the safety of urban mass transit. Based on the main factors of the rail consumption, the conception of rail consumption rule is put forward in the paper. The relationship among rail consumption, time and curve radius has been quantitatively described and two rail consumption models by failure and wear were proposed to calculate/predict the life of rail online. The models were verified by the survey data of Beijing Metro Line 2. The results could offer effective theoretical support to ensure the safety of urban mass transit systems, as well as the road users.