Numerical Investigation of Road and Structure Subjected to Earthquake Vibration, with Respect to Kermanshah Site

The effects of earthquakes on the road beds and the structures on it (the site in general) can be very variable, so that in some areas the acceleration of the earthquake at the ground level is amplified or, conversely. This issue can be related to several factors. In the present study, the Earth's response has been investigated by looking at the characteristics of the Kermanshah regional bed due to the application of force caused by the Upland earthquake with the help of two-dimensional finite element software (PLAXIS) .Two-dimensional numerical analyzes were performed for dry soil, drained saturated soil and undrained saturated soil. Results show that the presence of pore water (in undrained conditions) can increase the acceleration on the earth's surface up to 3 times compared to the dry state mode. However, at the same time, the overall displacement rates in all three modes of dry bed, drained saturated, and undrained saturated condition are not much different. Another noteworthy point about Kermanshah's site is that the closer to the soil surface (the location of the structure), the ground response more and more grows, and finally reaches its maximum in surface level.