Program for earthquake-induced sand liquefaction hazard classification based on cone penetration testing

Earthquake-induced sand liquefaction poses a serious threat to the stability of engineering structures. Accurate assessment of liquefaction hazards is critical for disaster management and seismic-resistant design. Addressing the limitations of traditional methods under complex geological conditions, this study proposes an automated evaluation approach based on Cone Penetration Testing (CPT) data. A dedicated program integrating multi-parameter computation and a graphical user interface (GUI) was developed using the Tkinter library. It incorporates an improved model for calculating critical cone tip resistance and a layer-based cumulative liquefaction index algorithm. This system automates the entire process from data input to hazard classification. Case studies demonstrate the program’s efficiency in handling multi-site and multi-layer datasets, providing engineers with intuitive and reliable liquefaction risk evaluations. The program significantly enhances the digitalization of seismic disaster risk mitigation.