Author(s)

Arash Rostami¹, Alireza Firoozfar², Behnam Adhami¹, Nima Asghari³

¹Department of Civil Engineering, Islamic Azad University Central Tehran Branch, Tehran, Iran.
²Department of Civil Engineering, University of Zanjan, Zanjan, Iran.
³Department of Civil Engineering, Noshirvani University of Technology, Babol, Iran.

During recent decades, tunnels construction in urban environments has been recognized as a useful factor in improving transportation situation in cities. Construction of underground structures like tunnels has a direct impact on the above-ground structures. The most important impacts are soil crust movement of the structure movement), acceleration change of the earthquake on structures, and land subsidence. The present research aims at seismic evaluation of the effect of soil type in land subsidence and effective mobility time in tunneling projects. For this purpose, two different soil types are chosen to model and assess factors using numerical methods. The outcome of this research concludes that tunneling changes in the dominant frequency record if these changes reach to the extent that structure frequency equals to record frequency, resonance phenomenon happens.

Soil Type, Dominant Frequency, Movement Duration, Soil Subsidence

Rostami, A. , Firoozfar, A. , Adhami, B. and Asghari, N. (2016) Impact of Soil Type Used in Tunneling on Land Subsidence and Mobility Effective Time under Different Earthquake Records. Open Journal of Geology, 6, 1469-1480. doi: 10.4236/ojg.2016.611104.