CN201261882Y

CN201261882Y - Yielding anchorage

Info

Publication number: CN201261882Y
Application number: CNU200820104437XU
Authority: CN
Inventors: 甘国荣; 刘璇; 周丹丹
Original assignee: Liuzhou OVM Machinery Co Ltd
Current assignee: Liuzhou OVM Machinery Co Ltd
Priority date: 2008-08-02
Filing date: 2008-08-02
Publication date: 2009-06-24
Anticipated expiration: 2018-08-02

Abstract

The utility model relates to a pressure-yielding anchorage device which comprises an extruding sleeve and anchoring medium, wherein the extruding sleeve and the anchoring medium are anchored on prestressing tendons to form a pressure-yielding anchorage device, the anchoring medium is a spring wire with a circular transverse cross-section, the prestressing tendons are stranded wires, wire cables or unbonded prestressing tendons with sleeve pipes, and the unbonded prestressing tendons are made of stranded wires or wire cables. The pressure-yielding anchorage device enables the geologic body with big deformation to release the injurious deformation in the anchorage, so that the long-term anchoring effect is retained, the reliability of anchoring is ensured, and the insurance is provided for the operation of the engineering. The utility model has the advantages of convenient fabrication and low cost; the prestressing tendons are not damaged, the performance of the parent material is not affected; the use of the external space is not affected, the pressure-yielding deformation amount can be adjusted, and the utility model can meet the different engineering demands.

Description

Allow the pressure ground tackle

Technical field:

The utility model relates to a kind of presstressed reinforcing steel anchoring body device, particularly a kind of have yielding property can allow the pressure ground tackle.

Background technology:

Development along with the ground prestressing technique, the permanent anchoring of high slope and the degree of depth of underground mining stope driving, its geologic body will produce bigger distortion, if carry out supporting with conventional ground tackle, it can not discharge the geologic body crushed element, reduce the influence of distortion increase with this to cable body, to make the reinforcing steel strand along with the distortion of reinforcing geologic body increases and cause increasing substantially of stress, cause that the disrumpent feelings accident of steel strand happens occasionally when serious, long-acting anchoring property to cable body has significant impact, thereby is the important hidden danger of engineering safety operation.

The utility model content:

The technical problems to be solved in the utility model is: provide a kind of the geologic body crushed element can be discharged, has yielding property can allow the pressure ground tackle, to solve the problems referred to above that prior art exists.

The technical scheme that solves its above-mentioned technical problem is: a kind of pressure ground tackle that allows, comprise extruded sleeve and anchoring medium, and the extruding of extruded sleeve and anchoring medium is anchored on the presstressed reinforcing steel, forms to allow the pressure ground tackle.

Described anchoring medium is that cross section is a spring wire witha circular;

Described presstressed reinforcing steel or steel strand or steel tendon or have the unbonded prestressing tendon of sleeve pipe, described unbonded prestressing tendon is made by steel strand or steel tendon.

Allowing of the utility model presses ground tackle to comprise extruded sleeve and anchoring medium, extruding by the extruding facility, the extruding of extruded sleeve and anchoring medium is anchored at formed one on the presstressed reinforcing steel and allow the pressure ground tackle, it allows the press reason be: externally under the tension, relatively do constant force and slide by anchoring medium and extruded sleeve under certain pulling force for presstressed reinforcing steel, extruded sleeve and anchoring medium play the anchoring effect to presstressed reinforcing steel when being lower than this value of thrust, and presstressed reinforcing steel does not slide.When presstressed reinforcing steel was done the constant force slip, anchoring medium was not damaged presstressed reinforcing steel, does not influence its mother metal performance.Thereby allowing of the utility model presses the beneficial effect of ground tackle to be:

1, this allows and presses ground tackle can allow the large deformation geologic body in anchoring the injurious deformation appropriateness be discharged, and has safeguarded the long-term effect of anchoring, guarantees the reliability of anchoring, for the engineering operation provides safety guarantee.

2, adopt single presstressed reinforcing steel allow the pressure ground tackle, many presstressed reinforcing steels can be assembled flexibly, and easy to make, cost is low.

3, allow the pressure ground tackle not damage presstressed reinforcing steel, do not influence its mother metal performance.

4, adopt and to allow pressures in the hole, do not influence hole space outerpace use.

5, the compressive strain amount can be regulated, can adapt to different requirement of engineering.

Press the technical characterictic of ground tackle to be further described below in conjunction with drawings and Examples to a kind of the allowing of the utility model.

Description of drawings:

Fig. 1～Fig. 4: allowing of the utility model pressed the structural representation of ground tackle:

Fig. 1-presstressed reinforcing steel is steel strand or steel tendon (the main sectional view of looking),

The A-A sectional drawing of Fig. 2-Fig. 1,

Fig. 3, Fig. 4-presstressed reinforcing steel are the unbonded prestressing tendon (the main sectional view of looking) that has sleeve pipe.

The specific embodiment:

A kind of pressure ground tackle that allows is made up of extruded sleeve 1 and anchoring medium 2, and extruded sleeve 1 and anchoring medium 2 extruding are anchored to form on the presstressed reinforcing steel to allow presses ground tackle (referring to Fig. 1); Described anchoring medium 2 is that cross section is a spring wire witha circular, and described presstressed reinforcing steel 31 is steel strand or steel tendon (referring to Fig. 2).

As a kind of conversion of the utility model embodiment, described presstressed reinforcing steel also can be its outer unbonded tendon 32 (referring to Fig. 3, Fig. 4) that is with sleeve pipe 4, and this unbonded tendon is made by steel strand or steel tendon; When being with the unbonded tendon 32 of sleeve pipe 4 outside it with extruded sleeve 1 and anchoring medium 2 anchorings, that part of sleeve pipe that is between anchoring medium 2 and the presstressed reinforcing steel be divested, extruded sleeve 1 and anchoring medium 2 directly are anchored on the presstressed reinforcing steel.

Claims

1. one kind allows the pressure ground tackle, it is characterized in that: this allows presses ground tackle to comprise extruded sleeve and anchoring medium, and extruded sleeve and anchoring medium extruding are anchored on the presstressed reinforcing steel, forms to allow the pressure ground tackle.

2. the pressure ground tackle that allows according to claim 1 is characterized in that: described anchoring medium is that cross section is a spring wire witha circular.

3. the pressure ground tackle that allows according to claim 1 and 2 is characterized in that: described presstressed reinforcing steel is steel strand or steel tendon.

4. the pressure ground tackle that allows according to claim 1 and 2 is characterized in that: described presstressed reinforcing steel is the unbonded prestressing tendon that has sleeve pipe, and described unbonded prestressing tendon is made by steel strand or steel tendon.