INJECTION SOIL THREADED ANCHOR WITH WITHDRAWN BAR OF SCREW PROFILE Russian patent published in 2009 - IPC E02D5/80 

FIELD: construction.

SUBSTANCE: injection soil threaded anchor with withdrawn thrust comprises anchor bar, unit of anchor bar embedment in working zone. Anchor bar is arranged in the form of screw. Unit of anchor bar embedment represents case consisting of separate parts connected to each other in specified sequence, which include at least two guide nuts to provide for anchor bar screw screwing-unscrewing, hollow element, plug for isolation of case cavity from hardening mortar of embedment from the side of soil, protective tube made of low pressure polyethylene for isolation of case cavity and anchor bar from hardening mortar of embedment from the side of bore well. At that hollow element is arranged with developed external surface formed by thread of periodic profile, installed between guide nuts and is connected to each of them by means of rigid joint. Protective tube is installed at case end and is rigidly fixed to one of guide nuts, plug is installed on the other end of case and is rigidly fixed to other guide nut. Embedment unit has at least three round nuts connected to hollow element by means of threaded joint and, at least, three spacer elements connected to guide nuts and to every round nut.

EFFECT: improved compensation of loads acting from soil side at fixed structure, with further unimpeded extraction of anchor fixing elements from soil.

8 dwg