Dynamic Response Analysis Of High-Speed Railway Embankment And Vibration Prevention Measures Of Geotechnical Engineering

The characeristics of high-speed railway including high-speed, heavy-haul and high-freuency, make the high-speed railway capable of efficient and stable implementation of a large number of passenger transport, which cause some new features.Some of those features closely relate to the special vibration of high-speed railway, including using EMU insread of ordinary trains, the rise of unballasted track technology and applications, the appearance of smooth seamless welded rails.Since the high speed of train, there are some new phenomena that the wheel-rail forces of vehicle/trach coupling system is different from the past and when the speed of train is close to or beyond the rayleigh wave speed of the ground, there will be significant resonance effects.This paper summarizes the particularity of the special vibration of high-speed railway including high-strength, high-frequency and long reciprocating action.To make sure of the numerical simulation parameters required in this article is more reasonable, I looked up a geotechnical investigation report railway construction projects in the study area, a large number of references and specifications, by which I got through the physical and mechanical parameters of the silty clay soil and pebbles in the study area. Dynamic load is calculated using the vehicle-track coupling dynamics, by which I got the wheel-rail forces between the CRH1AEMU and CRTSⅢ slab track.There are10control groups. According to the results of the control groups, I analyzed and summarized how the depth of the trench, the filling materials, vertical distance to the line of the high-speed railway affects the isolation effect.This paper first describes the vibration isolation system which uses continuous barrier lower and non-continuous barrier upper, and analyzes the advantages of this system. According to the special vibration of high-speed railway, this paper presents a new engineering design ideas taking into account both the internal vibrations of soil and ground vibration. At the end of the article, I give recommendations to isolation engineering measures based on the results of this study isolation engineering measures.