Large-diameter steel strand compression type anchorage device

A technology of extruded anchors and steel strands, which is applied to structural elements, building components, building reinforcements, etc., can solve the problem of not being able to anchor large-diameter 1×19 structural steel strands, etc., to improve the anchoring performance, increase the High friction and gripping force

Inactive Publication Date: 2012-04-25
CABR TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the object of the present invention is to provide an extruded fixed-end anchor for large-diameter 1×19 structural steel strands to solve the problem that existing extruded anchors cannot anchor large-diameter 1×19 structural steel strands line problem

Method used

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  • Large-diameter steel strand compression type anchorage device
  • Large-diameter steel strand compression type anchorage device
  • Large-diameter steel strand compression type anchorage device

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] Such as figure 1 , figure 2 Shown, the present invention comprises a steel strand 1, and steel strand 1 is the 1 * 19 structural steel strands sold on the market, and a tapered sleeve 2 is wedged in the center of steel strand 1 one end (as figure 2 , image 3 shown), the conical angle of the outer conical surface of the conical sleeve 2 is 2γ=6°, and the conical angle can vary within the range of 5° to 7°; the inner wall of the conical sleeve 2 is a circular through hole 21, and the conical sleeve 2 is arranged between the central steel wire 11 and the outer steel wire 12 of the steel strand 1.

[0020] Such as figure 1 , Figure 4 As shown, a special-shaped steel wire bushing 3 is arranged on the outer wall of the steel strand 1. The special-shaped steel wire bushing 3 is wound with high-hardness special-shaped steel wire 31. The cross-...

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Abstract

The invention relates to a large-diameter steel strand compression type anchorage device comprising a large-diameter steel strand compression type anchorage device. The device is characterized in that: the device comprises a steel strand. A taper sleeve is wedged between a central steel wire and an outer-layer steel wire at one end of the steel strand. One end of the steel strand is provided with an irregular-shaped steel wire bushing. The irregular-shaped steel wire bushing is formed by wound irregular-shaped steel wires with cross sections shaped as equilateral triangles. A cylindrical compressing sleeve is arranged outside the irregular-shaped steel wire bushing. The outer wall of one end of the compressing sleeve is in a cone shape, and the inner wall of the other end of the compressing sleeve is in a cone shape. The steel strand provided with the taper sleeve, the irregular-shaped steel wire bushing and the compressing sleeve are compressed by using a compressing mold, and are combined into an integral whole. With the taper sleeve wedged between the central steel wire and the outer-layer steel wire, the end of the steel strand is expanded, such that the compression forces among the steel wire layers are increased, and a wire drawing phenomenon of the steel wire strand in tension can be effectively prevented. Therefore, the holding force upon the steel strand is increased, and the anchorage performance is improved. The anchorage device can be widely applied in the field of constructions.

Description

technical field [0001] The invention relates to an extruded anchor at the fixed end of a steel strand, in particular to an extruded anchor for anchoring the end of a large-diameter steel strand in prestressed concrete construction. Background technique [0002] With the needs of structural design, the development and progress of material science and the continuous innovation of construction technology, in order to meet the requirements of large-span and heavy-load prestressed structures, prestressed steel strands are gradually developing in the direction of large diameter and high strength. Reduce the number of strands in each tendon bundle. However, most of the prestressed steel strands currently used in my country are 1×7 structures, with diameters of Φ12.7, Φ15.2mm, and strengths of 1860MPa. There is still a lack of large-diameter and high-strength steel strands in engineering applications. Under the existing raw materials and technology level, the development of 1×19 st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C5/12
Inventor 陈茜唐茂朱莹梅治乾于滨刘建英张强张清杰
Owner CABR TECH CO LTD
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