University of Guilan Computational Methods in Civil Engineering 4 1 2013 04 01 Validation and application of empirical shear wave velocity models based on standard penetration test 10a201bcf69c6ee5e35c832bfe9b7a60 25 41 921 EN I. Shooshpasha H. Mola-Abasi A. Jamalian Ü. Dikmen M. Salahi Journal Article 1970 01 01 Shear wave velocity is a basic engineering tool required to define dynamic properties of soils. In many instances it may be preferable to determine Vs indirectly by common in-situ tests, such as the Standard Penetration Test. Many empirical correlations based on the Standard Penetration Test are broadly classified as regression techniques. However, no rigorous procedure has been published for choosing the models. This paper provides 1) a quantitative comparison of the predictive performance of empirical correlations; 2) a reproducible method for choosing the coefficients of previous empirical methods based on the particle swarm optimization and 3) taking into account the polynomial correlation, a new model proposed. Different empirical correlations are compared with different validation criteria. The best performing empirical correlationsresult in a new modeland the unique coefficient associated determined by particle swarm optimization concluded. The more recent correlation only marginally improves prediction accuracy; thus, efforts should focus on improving data collection. https://cmce.guilan.ac.ir/article_921_d78902f630f7a2033207d1349b5e3829.pdf