RU2543825C1 - Wire anchor with swivel tips - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to the environment-oriented development of mountain and piedmont landscapes and can be used as anchors for landslide protection works. Wire anchor with swivel tips includes wire and swivel tip. Wire anchor has two mutually perpendicular rotating thrust elements that in operating condition take the perpendicular position relative to the wire and each other, located in different planes. The lower end of the lower thrust element has conical shape, and at the upper thrust element the lower end has a flat shape with respect to the symmetry axis, the upper ends of the thrust elements have a flat shape, truncated at an acute angle with respect to the symmetry axis.

EFFECT: increasing the efficiency and reliability of wire anchors, as well as reducing the materials consumption.

4 cl, 3 dwg

Description

The invention relates to the environmental arrangement of mountain and foothill landscapes and can be used as anchors for landslide structures.

A known method of erection of a flexible slope fastening [1], in which on the prepared base of the slope laid flexible slope fastening. A flexible sloping fastener consists of a woven mesh over which high-strength concrete is laid with lining with high-strength material. A flexible slope fastening is fixed on the slope of the dam in nodes with anchors with opening heads. The disadvantages of this technical solution are:

- the design of the anchors is quite expensive and not reliable enough;

- low efficiency, if necessary, anchor to a great depth.

The closest technical solution is a device for anchoring anti-landslide structures [2], including a wire anchor, which has a rotating thrust element that takes in a working condition perpendicular to the wire attached to the anti-landslide structure. The lower end of the thrust element has a conical shape, and the upper end is flat, truncated at an acute angle relative to the axis of symmetry. The disadvantages of this technical solution are:

- lack of efficiency and reliability of wire anchors.

The aim of the invention is to increase the efficiency and reliability of wire anchors.

This goal is achieved by the fact that on the slope prone to creep, an anti-landslide structure is being constructed. The landslide structure consists of a wicker net on which vegetation is planted. The root system of vegetation is fixed with a wicker net and soil on the slope, which provides a strong and solid grip. To strengthen the fastening of the landslide structure, the woven mesh is fixed on the slope with anchors. An anchor consists of a wire attached to two rotating thrust elements. The wire anchor has two mutually perpendicular rotating thrust elements, taking in a working state a perpendicular position relative to the wire and each other, located in different planes. The lower end of the lower stop element has a conical shape, and the lower end of the upper stop element has a flat shape relative to the axis of symmetry, the upper ends of the stop elements have a flat shape, truncated at an acute angle relative to the axis of symmetry. The optimal value of the angle of the upper end of 45 ° relative to the axis of symmetry of the thrust element. Installation of the anchor is carried out using a rod driven into the soil to a great depth or inserted into a pre-drilled hole. For this, the rod abuts against a conical tip. After deepening the thrust element to the required depth, the rod is removed. When pulling the wire up as a result of soil pressure on the truncated upper part of the thrust elements, they begin to rotate and are brought into a perpendicular position relative to the wire. The wire is fixed and rotates around the axis in the middle, which ensures their perpendicular position relative to it.

The anchor axis to the normal to the slope surface has a small deflection angle α, α = 5 ÷ 20 °, which ensures tensile operation of the fiber with possible mesh slipping. The penetration of the anchor into the soil below the surface depends on the thickness of the retained formation and varies from 0.5 ÷ 2.5 m.

The invention is illustrated by drawings, where Fig. 1 shows a cross section of a slope with an anti-landslide structure, anchored with wire anchors with rotary tips, general view; figure 2 - rotating thrust elements in the installation position, General view; figure 3 - rotating thrust elements in the working position.

The device includes a slope 1, fixed by a woven mesh 2, on which vegetation is planted 3. Wicker mesh 2 is fixed on the slope by a wire 4. Wire 4 is attached to the lower stop element 5 and the upper stop element 6. consisting of a truncated cylinder 7, the lower end of the lower stop 8 has a conical shape, and the upper end of the lower stop 9 is a flat truncated shape. The lower end of the upper stop 10 has a circular shape, and the upper end of the upper stop 11 is a flat truncated shape. The wire 4 is fixed and rotates around the axis 12. The installation of the anchor is carried out using the rod 13.

The device is constructed and operates as follows. On slope 1 subject to landslide, an anti-landslide structure is being constructed. The landslide structure consists of a wicker net 2, on which vegetation 3 has been planted (Fig. 1). The root system of vegetation 3 is fixed with a woven mesh 2 and soil on the slope 1, which provides a strong and solid grip. To strengthen the fastening of the landslide structure, the woven mesh 2 is fixed on the slope with anchors. The anchor consists of a wire 4 attached to the lower thrust element 5 and the upper thrust element 6. The lower end of the lower thrust element 8 has a conical shape, and at the upper thrust element the lower end 10 is flat in shape with respect to the axis of symmetry. The upper end of the lower stop element 9 and the upper end of the upper stop element 11 have a flat truncated shape located at an acute angle relative to the axis of symmetry. The optimal value of the truncated angle of 45 ° relative to the axis of symmetry of the thrust elements. Installation of the anchor is carried out using a rod 13, driven into the soil to a great depth or inserted into a pre-drilled hole. For this, the rod abuts against the end of the lower stop element 8. After deepening the lower stop element 5 to the required depth, the rod 13 is removed (figure 2). When pulling the wire 4 up as a result of soil pressure on the truncated upper part, the thrust elements begin to rotate and are brought into a perpendicular position relative to the wire 4. The wire 4 is fixed and the thrust elements rotate around the axis 12 in the middle, which ensures their perpendicular position relative to it (Fig. 3 )

The axis of the anchor to the normal to the slope surface has a small deviation angle α, α = 5 ÷ 20 °, which ensures the operation of the fiber 4 in tension with the possible sliding of the mesh 2. The penetration of the anchor into the soil below the surface depends on the power of the retained formation and ranges from 0.5 ÷ 2.5 m.

The proposed device is more reliable in operation than the known similar technical solutions. Moreover, their cost is 1.5-2 times less, since the strength properties of metal anchors are used more efficiently.

Information sources

1. Patent of the Russian Federation No. 2238368, MKI E02D 17/20, E02B 3/12. The method of erection of a flexible sloping mount. / Lamerdonov Z.G .; declared 03/31/2003; publ. 10/20/2004. Bull. No. 29 (analog).

2. Patent of the Russian Federation No. 2486316, MKI E02D 17/20. Device for anchoring anti-landslide structures. / Lamerdonov Z.G., Enaldiev M.A .; declared 05/04/2011; publ. 06/27/2013. (prototype).

Claims (4)

1. A wire anchor with pivoting tips, comprising a wire and a pivoting tip, characterized in that the wire anchor has two mutually perpendicular rotating thrust elements, taking in a working condition perpendicular to the wire and each other, located in different planes, the lower end of the lower thrust element has a conical shape, and the lower end of the upper stop element is flat in relation to the axis of symmetry, the upper ends of the stop elements are flat in shape, truncated sharp angle relative to the axis of symmetry. 2. Wire anchor with rotary tips according to claim 1, characterized in that the wire is fixed to the thrust elements in the middle. 3. The wire anchor with rotary tips according to claim 1, characterized in that the axis of the wire to the normal to the slope surface has a small deflection angle α, α = 5 ÷ 20 °. 4. Wire anchor with rotary tips according to claim 1, characterized in that the deepening of the thrust element into the soil below the surface depends on the power of the retained formation and varies from 0.5 ÷ 2.5 m

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