Grouted strand anchor and method of making same
OwnerAndrew L. Keeler, Ronald Marsicoinventors
Life of this patent
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Abstract
A grouted strand anchor and method of making the same comprising a pre-drilled anchor hole, a strand having centering means thereon for centering the strand in the hole, and grout surrounding the strand and engaging the sides of the hole for transferring tension loads in the strand by shear forces in the grout to the sides of the hole.
Claims9
A grounted strand anchor for transferring tension load to the ground comprising an anchor hole drilled into the ground to a predetermined depth and a predetermined diameter, a predetermined length of strand having a plurality of pre-stretched, pre-twisted wires, a plurality of longitudinally spaced centering means engaging and surrounding said strand adapted to center said strand in said anchor hole, and grout surrounding and engaging said strand along its complete length in the hole, engaging said centering means and engaging the sides of the anchor hole whereby tension loads in said strand are transferred by shear forces in said grout to the sides of said hole.
A method of making a grouted strand anchor for transferring tension load to the ground comprising the steps of drilling an anchor hole in the ground to a predetermined depth and diameter, applying a plurality of centering means to a length of a strand having a plurality of pre-twisted, pre-stretched wires, inserting said strand and centering means into the anchor hole such that the strand is centered in the anchor hole and until the end of said strand extends substantially to the bottom of the anchor hole, pumping grout into the anchor hole to fill the anchor hole substantially to ground level whereby the grout will intimately contact the outer wires of the strand and along its complete length in the hole and contact the centering means, and allowing the grout to set.
Dependencies are inferred from the claim text.