Open AccessAnalysis of the impact of shallow subway train traffic on urban development
Author(s) -
Vasiliy A. Mitroshin,
Владимир Мондрус
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1015/1/012019
Subject(s) - train , vibration , acceleration , joint (building) , displacement (psychology) , structural engineering , pedestrian , span (engineering) , engineering , action (physics) , acoustics , physics , civil engineering , psychotherapist , geography , psychology , cartography , classical mechanics , quantum mechanics
The article discusses the process of propagation of vibrations in a soil massif from a moving subway train. With the help of previously performed measurements of ground surface vibrations above a shallow metro line, it was found that the electrical insulating joint of rail strings is a source of increased vibrations when a train enters the station from a tunnel, which can lead to an excess of vibration acceleration levels in residential and industrial buildings limited by sanitary standards. The main types of wheel and rail defects are considered. The propagation of vibrations in unlimited space from a moving subway train in a tunnel, represented by an absolutely rigid body, loaded with dynamic action, taking into account the shock impact at the rail joint, has been studied. The dependences of the parameters of the wave field in infinite space and the displacement of the points of the tunnel on the frequency of the forcing action are found. It is noted that the parameters of the wave field decrease with an increase in the frequency of the external forcing action. The results obtained can be used to solve the problem of the propagation of vibrations in a confined space from moving subway trains.