EXTENSION TYPE GROUND ANCHOR STRUCTURE

• Main Authors: LEE, IN KWI, KIM, JONG MO, PARK, SOO BEOM
• Format: Patent
• Language: English
• Published: 04.09.2008
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

A ground pressure extension type ground anchor structure is provided to prevent a drop in compressive strength of grout caused by an anchor whose front is buried under impurities, to secure grout strength by making an adhesive agent burst and react to water without going through a mixing process, to heighten the binding strength of an anchor and the ground by extending an extension finger and an auxiliary finger driven deeply into the ground, and to extend an extension finger perfectly by widening horizontally. A ground pressure extension type ground anchor structure(100) comprises a body(10) provided with plural extension fingers(20) to be rotated and provided with an insertion hole for inserting a guide shaft, fastening holes for inserting PC steels(90) at an angle of 45 degrees and support plates having a hinge hole, a guide shaft installed in the center of the body to move upward by an external impact to make the extension fingers widen outward and provided with a striking plate having plural coupling projections to fix an adhesive agent, a support rod having a screw hole, a connecting rod having a thread, a fixing plate(36) having an incline, a fixing shaft having a compression spring(38) and a guide plate(37) having an incline, and an extension finger shifter making the extension fingers turn perpendicularly and widen and provided with an upper fixture(52) having plural coupling projections(51) with an insertion hole, a lower connector(54) having plural coupling grooves(53) with an insertion hole, a central shaft(56) connecting the upper fixture and the lower fixture, a compression spring(55) installed to the outside of the central shaft, a link bar(50) installed to make the top inserted to the coupling groove of the lower connector and the bottom inserted to an insertion groove(23) of the extension finger and a guide bar(60) installed to make the bottom adhered closely to the lower side of the link bar and the top installed to the coupling projection of the upper fixture.