Finite Element Method about single and twin tunnels on the earth surface settlement with Plaxis Software

Nowadays due to increasing rate of urbanization, population compaction and construction in Iran, the issue of construction of underground tunnels become the center of attentions, due to it's capability to obviate the problemsregarding transportation, water transmission and subsurface structures. In this way, studying about the right placement,procedure of excavating tunnels and it's possible effects on superstructures specially an ancient buildings are very important and vital. In this research, the settlement of a single tunnel excavated in the depths of Isfahan city (Culturalcapital of Islam world) in Iran has was studied, using the finite element program PLAXIS, then the results of this numerical analyze was compared with the data obtained from field instrumentations, Finally these results were generalized to twin tunnels. In the next stage, after studying the effect of spacing between twin tunnels over these settlements, those quantities, which are greater than the allowable settlement and their situation were recognized. It is obvious that this problem will highlight the importance of Following a good and reliable design process

کلیدواژه ها:

Settlement ، Twin Tunnels ، Numerical Method ، PLAXIS