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Expandable inner anchor head of prestressed anchor cable

A technology of prestressed anchor cable and inner anchor head, which is applied in the direction of buildings, building reinforcements, building components, etc., and can solve the problems of low anchoring force, small contact area, and no clamping device, etc.

Active Publication Date: 2021-05-11
QINGDAO METRO LINE 6 CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the contact area between the existing inner anchor head structure and the grouting body is small, and there is no reliable clamping device. After the anchor cable is strengthened, the anchoring force of the cable body is not large, and the long-term static load and dynamic load seriously affect the anchorage. reliability

Method used

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  • Expandable inner anchor head of prestressed anchor cable
  • Expandable inner anchor head of prestressed anchor cable
  • Expandable inner anchor head of prestressed anchor cable

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Embodiment Construction

[0025] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways than those described here, and those skilled in the art can make similar extensions without departing from the connotation of the present invention. Accordingly, the present invention is not limited to the specific embodiments disclosed below.

[0027] Such as figure 1 As shown, the prestressed anchor cable expandable inner anchor head of the present invention includes a hollow flower tube 12, a thin-walled steel pipe 3, a top sealing plate 5, a bottom head 6, an anchor grab 1 and a support grab 4, and the hollow flower tube 12 i...

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Abstract

The invention relates to the field of soil anchoring, in particular to a novel expandable inner anchor head of a prestressed anchor cable. Including hollow flower tube, thin-walled steel pipe, top sealing plate, bottom head, anchor grip and support grip, the hollow flower tube is provided with a central axis hole along its axial direction, and the thin-walled steel pipe is arranged in the central axis hole in the hollow flower tube, The thin-walled steel pipe reciprocates in the central axis hole of the hollow floral tube. While increasing the contact area between the inner anchor head and the grouting body through the hollow flower tube, the anchoring force of the anchoring section of the anchor cable is greatly improved under the double anchoring action of the anchor grip and the support grip, which facilitates the completion of the subsequent grouting work.

Description

technical field [0001] The invention relates to the field of soil anchoring, in particular to an expandable inner anchor head of a prestressed anchor cable. Background technique [0002] Prestressed anchor cable is an effective construction method for slope reinforcement, and is widely used in various slope engineering constructions. When the prestressed anchor cable passes through the anchored structure, it plays an active role in strengthening the rock and soil mass of the slope, which can significantly improve the overall stability and bearing capacity of the slope. The prestressed anchor cable is composed of three parts: the inner anchor head, the anchor cable body and the outer anchor head. The inner anchor head is the foundation for anchoring the anchor cable in the rock body to provide prestress. Its mechanical characteristics affect the pullout performance of the anchor cable anchor section. It has a great influence, and its mechanical characteristics mainly depend ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C5/12E02D5/74E02D17/20
CPCE04C5/12E02D5/74E02D17/20
Inventor 刘泉维杨忠年李克先黄成刘林胜宗超凌贤长
Owner QINGDAO METRO LINE 6 CO LTD