2024 Volume 10 Issue 17 Pages 558-563
This study aims to raise awareness of liquefaction risks in densely populated areas of Chiang Rai, following the occurrence of liquefaction in remote areas of northern Thailand in 2011. These urban areas primarily consist of sandy soil layers, which are susceptible to liquefaction. To assess the liquefaction potential, this research conducted Standard Penetration Tests at newly installed boreholes located in the central Chiang Rai province. The liquefaction potential was estimated using the simplified procedure analysis and finite element method. The study considers two earthquake cases associated with 10% and 2% probabilities of exceedance in a 50-year period. Overall, both analysis approaches consistently indicate the potential for liquefaction in Chiang Rai, particularly within shallow layers of loose sand. Additionally, the variation in the type and sequence of soil deposits were found to significantly influence the liquefaction hazard. By incorporating geotechnical data from the boreholes, this study significantly enhances the accuracy of estimated liquefaction potential values for these urban areas.
