Saeed Hakimian - M.Sc.Student Of Islamic Azad University (Estahban Branch)-IRAN
Mansour Mosalla Nejad - Assistant Professor Shiraz University-IRAN

In recent decades, the implementation of micro piles have been increased extensively in large projectconstructions because of the unique advantages of this method compared to concrete piles.The results of centrifugetests and numerical analysis show that efficiency and importance of micropiles can be considered as an effectivefunctional solution. This research is designed to use a numerical modeling using finite elemet software Plaxis 3dFoundation v1.6 and also the FHWA code for a comparative study between micropiles and microbulbs . then theeffective factors was analysed in order to choose the better method for between these two methods(micropile andmicrobulb). The results showed that the new microbulb system is an appropriate solution for improvement ofmechanical properties of the soil ,increase of bearing capacity and settlement decrease.

micropile, microbulb, bearing capacity,Plaxis 3d Foundation