SCREW PILE, SCREW PILE INSTALLATION METHOD, SCREW PILE DRIVING MEANS AND OPEN-CUT TUNNELING METHOD WITH THE USE OF SCREW PILE Russian patent published in 2006 - IPC E02D5/56 E02D7/22 

Abstract RU 2288326 C1

FIELD: building, particularly to erect load-bearing foundation, to retain installation on ground surface and to drive underwater and ground-surface tunnels.

SUBSTANCE: screw pile comprises metal pipe with helical winding formed on the metal pipe and with concrete head installed on the pipe. Concrete head has thickness equal to 1/4-5 pipe diameters. Metal rods having length equal to that of concrete head are built in the concrete head. The helical winding extends along the full shaft length and is made as helical blade with width equal to 0.5-5 concrete head diameters. The helical winding has conical part formed in lower pile part and extending for the length equal to not more than 1/3 of pile length. Triangular stiffening ribs are distributed over the full helical blade surface and have bases connected with each other and abutting metal pipe. Apexes of the stiffening ribs are located at blade edge. Apex of each stiffening rib is provided with metal rod. Metal rods of stiffening ribs are connected with each other by metal reinforcement members embedded in blade edge. Additional triangular stiffening ribs are created in the blade. The additional triangular stiffening ribs extend transversely to main stiffening ribs and have bases connected with pipe. Additional stiffening ribs have apexes fastened to apexes of corresponding main stiffening ribs. Connection member adapted to connect the screw pile with building structure is located in upper pipe part. The connection member is made as header provided with thread or ribbed reinforced concrete header. Upper part of the header is fitted with hook fixer. Lower part thereof has bolt to provide keyed pile driving means fixation. Screw pile driving method and means, as well as tunneling method or method for underground passage construction by open-cut method with the use of the screw pile are also disclosed.

EFFECT: increased structural load-bearing ability, simplified structure, accuracy and reliability of screw pile driving, as well as possibility to drive pile in densely built-up areas.

5 cl, 7 dwg

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RU 2 288 326 C1

Authors

Kozlovich Arkadij Viktorovich

Dates

2006-11-27Published

2005-05-24Filed