Predicting Menard Modulus using Dynamic Compaction Induced Subsidence

Abstract

Previous research by Varaksin et al. suggests that it is possible to develop a relation between strain and increase in Menard Pressuremeter (PMT) limit pressure, whereas limit pressure will double every time the ground is strained strain 3%. Later, Hamidi et al. proposed a new method to predict the limit pressure profile after dynamic compaction with the assumption that induced ground subsidence is the accumulation of vertical strains according to a Rayleigh distribution. Comparison of the geometric mean of predicted and post improvement measured limit pressure values suggest that this method of calculation is quite reliable. Noting that there are also established empirical relationships between the limit pressure and Menard Modulus, it would seem rational that a similar method can be used to predict the Menard modulus. This has been studied in this paper and it can be observed that for practical purposes, this method is able to provide Menard Modulus values of the correct magnitude.