Numerical Modelling of Dynamic Compaction in Dry Sandy Soils for Determination of Effective Print Spacing

Subject Areas : Structural Engineering

Ghodrat  Jahangiri ¹ ()
ali  pak ² (Department of Civil Engineering, Sharif University of Technology, Tehran, Iran)
Ali  Ghassemi ³ (Faculty of Architecture & Civil Engineering, Islamic Azad University, Qazvin Branch, Qazvin, Iran)

Received: 2010-12-21 Accepted : 2011-01-04 Published : 2011-08-21

Keywords: Dynamic compaction, Print Spacing, Dynamic analysis,

Abstract :

Dynamic compaction (DC) is a widely used soil improvement method in dry and/or saturated soils. The design of DC treatment is usually carried out based on the past experiences and empirical relations. In order to clarify the ambiguities in DC processes, numerical modeling of DC in dry granular soils has been considered using a dynamic finite element code. Using the developed model, two design curves for determination of effective print spacing (distance between two neighboring drop points) in dynamic compaction of dry sandy soils are proposed. A case history of dynamic compaction project is analyzed and the obtained results show that the developed design curves have good capability for determination of print spacing