الفهرس 
ABSTRACT
General about helix pileOnly 14 pages are availabe for public view
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Abstract
Helical piles have been used widely in engineering application .They can be used to provide structural stability against axial compression, uplift and lateral forces. . In recent years, helical pile foundations have become more widely used in many countries.
Helical pile consist of some steel shafts with a series of helical steel plates welded on a pitch. During installation, helical anchor was screwed into the ground by using a standard truck or trailer mounted auguring equipment. The equipment will apply a rotating moment to the steel shafts to screw the anchors into ground. The torque resistance of the anchor will be monitoring along the installation. When the torque resistance achieved its designed values, it verified that capacity of anchor achieved. Behavior of helical anchor under uplift load in cohesion less soil has been studied using previous researches. Based on a few number of laboratory model results many investigators reported the uplift loading of helical anchor embedded in cohesion less soil, a review of related last works shows that not much research has been done to define the uplift capacity in cohesionless soil, a problem that is often encountered in field.