International Balkans Conference on Challenges of Civil Engineering
Abstract
In this paper the liquefaction potential of Quaternary soft non-cohesive soils at Semanisite, Fier prefecture in Albania has been assessed.The liquefaction analyses have been computed considering the hazard levelcorresponding to different levels of safety, such as 10% in 10 years (72-years Return Period),10% in 50 years (475-years RP) and 2% in 50 years (2475-years RP). The accelerations corresponding to the abovementioned hazard levels are calculated using PSHA (probabilistic seismic hazard assessment), and The Cyclic Stress Ratio is calculated for each acceleration.The seismological data used in the analyses considers earthquakes with MS 4.5 and covers atime span from 58 up to 2009.The calculation of cyclic resistance ratio (CRR) of the soils is based on 416 SPT(Standard Penetration Test) values, 12 CPTU tests up to 25 m depth and shear wave velocity(Vs) measurements.The liquefaction probabilities for a given seismic event are combined with the probability of occurrence of the seismic event i
