Work

A Prediction Method for Indoor Vibration Over Metro Depot Throat Area Based on Coupled Interactions of Wheel-rail

Year: 2023

Type: conference-paper

Abstract: Environmental vibration pollution is the primary environmental problem faced by the superstructure of metro depots.The throat area is especially prone to high wheel-rail impact vibration due to multiple joints and turnouts, which may cause high annoyance to the residents in the superstructures both on the upper cover and surrounding areas.In this paper, based on the coupled dynamic analysis of wheel-turnout, a prediction method to evaluate the indoor vibration of over-track building was established.Firstly, subway turnout with variable sections on switch, connection part and frog and vehicle models were established, and wheel-rail force was obtained through multibody dynamics calculation.Secondly, the track-foundation-structure finite element numerical model was built, loading the wheel-rail force excitation, then the indoor vibration could be obtained.The accuracy of this method was verified taking a 32 story residential superstructure in North China as an example.The vertical vibration accelerations were measured on every other floor when a A-type train travelled on a 7-turnout.The error between the measured data and the calculated results was within 5%, indicating that this prediction method has certain accuracy.The research results have certain guiding significance for the prediction and control of vibration in metro depot.

Source: International Congress and Exposition on Noise Control Engineering (INTER-NOISE)

DOI: 10.25144/14611

Authors: L HE, Q ZENG, Y WU, R SONG

Institution: Beijing Academy of Science and Technology

Language: English

Topic: Railway Engineering and Dynamics

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Industry, innovation and infrastructure, Sustainable cities and communities

Open Access status: bronze

Funder: National Natural Science Foundation of China