An experimental method for studying the influence of ballast splashing during train running

Abstract

The invention discloses an experimental method for researching influence on railway ballast splash in the train driving process. A determination method of initial detection sites comprises the following steps: placing three lines of simulation particles on two sides of a train railway in the width direction and in the center of the railway, wherein each line of simulation particles comprise a plurality of simulation particles placed along the length direction of the train railway; recording the position of each simulation particle after each movement when the train drives over the train railway, and after every time the train drives over the train railway, putting each simulation particles at original positions respectively, and connecting the adjacent positions after movement of the simulation particles to form the activity range of the simulation particles; in each line of simulation particles, marking the average value of the superposed areas of every two adjacent simulation particles in the activity range as A, marking the average value of the areas of the simulation particles in the activity range as B, and adjusting the distance of the adjacent simulation particles until thevalue of A / B is 0 to 30%, namely obtaining the initial detection sites of the simulation particles.

Description

technical field [0001] The invention belongs to the field of civil engineering, and relates to an experimental method for studying the influence of ballast splash speed during train running. Background technique [0002] Ballast is coarse gravel or crushed stone used to lay railway subgrades, mainly used for railway subgrades, and the stone is super-grade granite. Ballast is used to support track sleepers in the railway transportation system and is a common track bed structure. Before the track is laid, a layer of crushed stone will be laid on the subgrade and then compacted before the sleepers and track are laid. The use of ballast can easily drain water and adjust the position of the track. At the same time, because the ballast distributes the weight of the train and the track on the roadbed, it can reduce the vibration and noise caused by the passing of the train and increase the comfort of passengers. However, when the train is running at high speed, it will generate a...

AI Technical Summary

Problems solved by technology

However, when the train is running at high speed, it will generate a strong airflow impact around it, and the ballast at the bottom of the train will splash everywhere and hit the vehicle, which may cause danger to the moving vehicle and the track

However, there is currently no experimental method for studying the effect of passing trains on the speed at which ballast is splashed

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