Analytical reliability assessment of liquefaction potential based on cone penetration test results

• Published in: Scientia Iranica. Transaction A, Civil engineering Vol. 21; no. 5; p. 1549
• Main Authors: Johari, A, Khodaparast, A R
• Format: Journal Article
• Language: English
• Published: Tehran Sharif University of Technology 01.10.2014

Determination of site liquefaction potential and subsequent deterrent action can prevent significant damage to structures. In this way, a probabilistic liquefaction assessment can develop potential flexibility and risk management decisions. Based on the advantage of probabilistic assessment, considerable research has been carried out in the past few years on liquefaction potential. In this research, the jointly distributed random variables method is used as an analytical method for probabilistic analysis and reliability assessment of liquefaction potential based on cone penetration test results. The selected stochastic parameters are corrected CPT tip resistance and the stress reduction factor, which are modeled using a truncated normal probability density function and peak horizontal earthquake acceleration ratio and magnitude, which are considered to have a truncated exponential probability density function. The depth of the water table and fines content are regarded as constant parameters. The results are compared with those of the Monte Carlo simulation. A sensitivity analysis shows that the moment magnitude is the most effective parameter in soil liquefaction potential.