Railway vehicle dynamic effects in the course of passing over turnouts in the straigth direction

Abstract

There is projected a method of railway vehicle dynamic effects detection in vertical and lateral direction in the course of passing over a turnout in this contribution. The method is based on acceleration measuring on vehicle axle boxes. Dynamic effects are valuated on the basis of statistical characteristics computed from measured accelerate values in the course of passing over a turnout tongue and frog. They are graphically evaluated in different ways with respect to investigation of higher vehicle dynamic effects in the course of passing over a turnout in this contribution. There are results of unit class 680 dynamic effects in the course of passing over Czech Railways chosen corridor tracks turnouts in higher speed condition projected next in this contribution. The measurements were carried out in 2004÷2006 in terms of high-speed tests of the unit and in the terms of chosen ČD, a. s. track sections verification. There are dynamic effects in lateral direction in the course of passing over a straight turnouts in high speed condition (up to 230 kmph) and also dynamic effects in lateral direction in the course of passing over curved turnouts in higher speed condition (in higher cant deficiency condition) with tilting of vehicle body together evaluated.