Akademik Veri Yönetim Sistemi
Indian Geotechnical Journal, 2024 (ESCI)
The Manisa-Menemen Railway Project, located west of Türkiye was planned to modernize due to improving the transportation infrastructure in its area. Sandy soils with the potential for liquefaction were identified during the site investigation. Considering the project's location in a region with high seismic activity and soil composed primarily of sand units, it is necessary to design a soil improvement methodology to mitigate the risk of liquefaction. Consequently, liquefaction analyses are conducted to design a suitable soil improvement system. A soil improvement method with deep soil mixing (DSM) columns was proposed to prevent related liquefaction problems. The factor of safety against liquefaction, the liquefaction potential index (LI), and the liquefaction severity index (LS) were calculated both for unimproved and improved soil conditions. To design DSM columns more economically, the length of the columns is reduced while still ensuring that they remained within acceptable limits for LI and LS. The performance of the DSM columns was evaluated under dynamic conditions by Finite Element Method. Based on the results obtained from the analysis, the performance of the columns was satisfactory. This study shows that a performance-based design can be used to design DSM columns in liquefiable soils. This approach can help create more efficient and cost-effective solutions for preventing liquefaction.