lateral direction
4.Taking the south approach of the SUTONG Bridge as example, the interaction of the adjacent spans in the longitudinal and lateral direction is discussed in this paper, comparing the results according to Specifications of Earthquake Resistant Design for Highway Engineering with the results from FEM analysis.
10.The safety of the running train is an important subject in railway vehicle system dynamics.The condition of derailment and indices of vehicle are important parameters that are defined for safety evaluation of the running train.According to the running condition of vehicle,the paper discusses derailment safety of vehicle in four respects:the coefficient of derailment for a single wheel,the coefficient of derailment for wheel-set,the derailment condition caused by wheel load reduction,relation between the coefficient of derailment and the rate of wheel load reduction.Factors affecting the indices are systematically investigated.Suitable conditions of derailment of vehicle are given.The results show that H/P1 can be used to evaluate the derailment safety,inwhich H is a force acting on wheel-set in the direction of lateral and P1 is a force acting on the derailment wheel in the direction of vertical.

