METHOD TO CONTROL NORMAL HEAVING FORCE ACTING IN DIRECTION OPPOSITE TO TANGENT HEAVING FORCE ACTION Russian patent published in 2008 - IPC E02D27/35 

FIELD: construction, particularly to protect building foundation against frost heaving in seasonally freezing ground.

SUBSTANCE: method for pile foundation protection against frost heaving force applied to foundation from surrounding ground side involves forming normal frost heaving force components acting on pile in direction opposite to tangent heaving force action by installing supporting-and-anchoring plate; securing the supporting-and-anchoring plate to pile body in area corresponding to seasonal ground freezing depth in foundation sitting place; drilling hole to supporting-and-anchoring plate location, wherein hole diameter is equal to transversal dimensions of supporting-and-anchoring plate. Supporting-and-anchoring plate has surface area of not less than 1/10 of side area of pile section having length equal to 2/3 of seasonally freezing depth.

EFFECT: simplified technology and increased efficiency and reliability of heaving protection along with decreased labor inputs and costs.

2 cl, 1 ex