Influence of Buckling at the Rod Micropiles

This paper has in purpose contribute to design micropiles [1,4] from views buckling, then for end bearing micropiles. More approach generally exist, how the buckling calculate - from classical concrete practice (without soil resistance) until past procedure from concrete theory with influence coefficient k - background reaction. When you use computing software systems (eg. GEO 4), results of this calculation display of micropile aberration (horizontal deformation) when you enter the load at the ultimate skin friction (ie. design is not check). Ischebeck company [3] recommend approach for design of micropiles. This approach contents coefficients, equations and graphs, which display maximum load for soils describe total cohesion c(u). Nevertheless from tabular result, that for some type soil (cohesion, soft consistence (or very soft) with c(u) 25-40 kPa) isn't need consider risk buckling and therefore was perform sample calculation for micropile with impact these relations. (C) 2016 Published by Elsevier Ltd.