Global Patent Index - EP 0770734 B1

EP 0770734 B1 2000-01-05 - Method for installing ground anchors

Title (en)

Method for installing ground anchors

Title (de)

Verfahren zum Einbringen von Zugpfählen

Title (fr)

Procédé de mise en place de tirants d'ancrage

Publication

EP 0770734 B1 (FR)

Application

EP 96810680 A

Priority

CH 298895 A

Abstract (en)

[origin: EP0770734A1] The anchoring bore is formed by a tube (8) with a drilling and injection tool assembly (9) at its leading end. The internal passage of the tube defines a concrete injection conduit (10), and the tube has a pair of lateral nozzles (13,14), oriented in opposite directions, arranged radially behind its leading end. The nozzles allow injection of concrete into the surrounding ground surface at a pressure greater than 150 bar, while the tube is rotated around its longitudinal axis and withdrawn from the bore formed by the drilling tool. After complete withdrawal of the tube, cables or similar anchoring components may be inserted into the bore before the concrete sets around them to define an anchoring mass.

IPC 1-7 (main, further and additional classification)

E02D 5/76; E02D 5/54

IPC 8 full level (invention and additional information)

E02D 5/54 (2006.01); E02D 5/76 (2006.01)

CPC (invention and additional information)

E02D 5/76 (2013.01); E02D 5/54 (2013.01)

Designated contracting state (EPC)

DE ES FR GB IT

DOCDB simple family

EP 0770734 A1 19970502; EP 0770734 B1 20000105; CH 691128 A5 20010430; DE 69606008 D1 20000210; DE 69606008 T2 20000907; ES 2142565 T3 20000416