Simple and Non-Linear Regression Techniques Used in Sandy-Clayey Soils to Predict the Pressuremeter Modulus and Limit Pressure: A Case Study of Tabriz Subway

  • Samad Narimani
  • Hamid Chakeri
  • Seyed Morteza Davarpanah

Abstract

Nowadays, some common field tests consist of SPT test and pressuremeter test are performed in investigating the geotechnical parameters of projects such as tunneling. Due to the high cost of pressuremter test performance and its time-consuming procedure, using some empirical relations between SPT and Pressuremeter tests are recommended for primarily study of the project. The purpose of this study is to perform regression analyses between the NSPT and the uniaxial compression strength test and the pressuremeter test parameters obtained from a geotechnical investigation performed in route of 2nd line of Tabriz metro. Correlations were carried out for sandy and clayey soils separately. A series of simple and nonlinear multiple regression analyses are performed and as a result of analyses, several empirical equations are developed. It is shown that the empirical equations developed in this study are statistically acceptable. 

Keywords: Pressuremeter Modulus (EM), SPT blow count (NSPT), modulus of uniaxial compression strength (EUCS), Tabriz subway
Published online
2018-05-03
How to Cite
Narimani, S., Chakeri, H., & Davarpanah, S. M. (2018). Simple and Non-Linear Regression Techniques Used in Sandy-Clayey Soils to Predict the Pressuremeter Modulus and Limit Pressure: A Case Study of Tabriz Subway. Periodica Polytechnica Civil Engineering, 62(3), 825-839. https://doi.org/10.3311/PPci.12063
Section
Technical Notes