Mojtaba Masoumi
Negar Salehi Alamdari
Hamid Reza Azizi peste bagloo

Abstract: The use of subway lines to create more convenience in the public transport system and also to reduce urban traffic has expanded in recent decades in Iran and other parts of the world. The construction of urban train lines in major cities of Iran such as the metropolises of Tabriz, Mashhad, Ahvaz, Shiraz, Isfahan and also the process of completing urban train lines in Tehran are among the prominent examples of investment and efforts to expand underground transportation.Vibrations caused by the passage of city trains in underground tunnels can cause vibrations in adjacent structures. If not properly designed, train induced waves can cause problems in people's daily lives.. The magnitude of these vibrations, although not destructive, can affect the daily lives of residents of adjacent structures and create a sense of insecurity. Although the scaled boundary method has already been used extensively to model wave propagation problems in tunnels, simultaneous modeling of tunnels, soils, and wave interactions caused by train movements with adjacent structures has not been used with the scaled boundary method. In addition, in this thesis the modeling of structured soils in the form of scaled boundary method will be done for the first time.

_Structured soil, Modified Cam clay model, Finite element method, Tunnel_