High strength jet anchor

• US 10,563,369 B2
• Filed: 12/01/2017
• Issued: 02/18/2020
• Est. Priority Date: 12/07/2016
• Status: Active Grant

• Current Assignee: Anadolu Universitesi
• Original Assignee: Anadolu Universitesi Rektorlugu
• Inventors: Evirgen, Burak, Tuncan, Mustafa, Tuncan, Ahmet
• Primary Examiner(s): Armstrong, Kyle
• Application Number:
  US16/099,405
• Publication Number:
  US 20190309496A1
• Time in Patent Office: 809 Days
• CPC Class Codes: E02D 5/74 Means for anchoring structural elements or bulkheads anchoring piles E02D5/54 ; anchored foundations E02D27/50
• CPC Class Codes: E02D 5/803 with pivotable anchoring members

Abstract

The invention relates to a jet anchor which ensures the fixation of the lateral support elements on the surface to mass formed by high pressure jet injection with purpose of providing stabilization of the excavation surface during excavation support and slope stability works, said jet anchor provides the combined usage of anchor body (120), ducted cutting wing (140), connectors, rigid wing opening plate (130), rope pulling apparatus (110), guide pipe elements (150) with new anchor equipment and jet grouting system and thus obtaining strength increased anchor element.

Claims

1. A jet anchor (100) for fixing lateral support elements to a formed mass by jet injection with purpose of providing stabilization of an excavation surface (ground surface) during excavation support and slope stability works to be performed, characterized in that it comprises;

a rope pulling apparatus (110) an end of which is fixed to rod of a drilling machine and which is fixed by an anchor spline (112) by transferring an anchor rope (111) from other end, and which allows ducted cutting wings (140) to open by applying a pulling force over the anchor rope (111) by operating in coordination with a guide pipe (150),

an anchor body (120) that is in a hollow tube form through which the anchor rope (111) is able to pass, wherein it has lugs (121) connected with the anchor body (120) at a body lower-part (126) and an anchor head (123) located under the lugs (121) and functioning as bearing for the lugs (121), and has an inner guide pipe (127) that allows a wing opening plate (130) to move in the center,

the wing opening plate (130) comprising at least two mutually positioned fixation locks (131) that would function as locking such that they correspond to lock a housing (124) located on the anchor body (120) and positioned on ducted cutting wings (140) which are connected with the movable lugs (121) by being passed through outer surface of the anchor body (120),

the ducted cutting wings (140) which are able to move from parallel position with the anchor body (120) towards vertical position with the anchor body (120), and comprise at least one connection housing (144) to be assembled with the lugs (121) located on the anchor body (120) and a lower wing profile (141) comprising chain ducts (143) as many as the number of chains (160) to be used in the jet anchor (100) system and an upper wing profile (142) covered on the lower wing profile (141),

the guide pipe (150) comprising a lock gap (151) in a hollow pipe form which is to be engaged on the anchor body (120) and on the wing opening plate (130) located thereon and where the fixation locks (131) contained by the wing opening plate (130) is to be placed in order that it fits fully on the wing opening plate (130), and a rigid support plate (152) which contacts with the wing opening plate (130) during operation at its end that contact with the wing opening plate (130).

2. The jet anchor (100) for fixing lateral support elements to the formed mass with purpose of providing stabilization of the excavation surface during excavation support and slope stability works to be performed which are mentioned in claim 1, wherein each of the ducted cutting wings (140) of it, is able to move from the parallel position with the anchor body (120) towards the vertical position with the anchor body (120) and they consist of four pieces which can be opened simultaneously.

3. The jet anchor (100) for fixing lateral support elements to the formed mass with purpose of providing stabilization of the excavation surface during excavation support and slope stability works to be performed which are mentioned in claim 1, wherein it comprises chains (160) which are uniform support element for the jet anchor (100) and provide simultaneous opening of the ducted cutting wings (140), at the same time remain in concrete and are used in forming a composite structure.

4. The jet anchor (100) for fixing lateral support elements to the formed mass with purpose of providing stabilization of the excavation surface during excavation support and slope stability works to be performed which are mentioned in claim 1, wherein the ducted cutting wings (140) of it are manufactured from steel.

5. An application method of jet anchor (100) for fixing lateral support elements to the mass formed by high pressure jet injection at 350-500 bar with purpose of providing stabilization of the excavation surface during excavation support and slope stability works to be performed according to claim 1, wherein it comprises the following process steps;

opening a drill hole to required depth,

adequate amount of high pressure jet injection,

obtaining a composite structure by ensuring the ducted cutting wings (140), the chain (160) and the anchor body (120) sections of the jet anchor (100) to stay in the concrete by lowering the jet anchor (100) to well before the concrete starts to set,

lowering the guide pipe (150) to the well,

fixing of the anchor ropes (111) that are outside the well to the rope pulling apparatus (110),

fixing the rope pulling apparatus (110) to rod of the drilling machine or to an external tower,

pulling up the anchor rope (111) and enabling the guide pipe (150) to be in contact with the ducted cutting wings (140) by pushing the wing opening plate (130) having a rigid structure,

the opening of the ducted cutting wings 140 from the lower side by way of the wing opening plate (130) when the anchor rope (111) is pulled up,

fixing the fixation locks (131) on the wing opening plate (130) to the lock housings (124),

completely opening the ducted cutting wings (140) in the concrete by the fixing of the fixation locks (131) and thus preventing them to close back,

demounting of the rope pulling apparatus (110) and removal of the guide pipe (150),

waiting for the concrete to set,

fixing the jet anchor (100) to lateral beams on the well surface.