Conical anti-slide tie anchoring strand stayed cable with forked ear and construction method of cable

A technology of anti-skid keys and steel strands, which is applied to bridge parts, erection/assembly of bridges, bridges, etc., can solve the problems of high anchorage production cost, low ability to resist wind and rain excitation, and large wind resistance coefficient of cables, etc., to achieve The effect of saving raw materials, saving materials, and reducing the distance between anchor plate holes

Pending Publication Date: 2019-09-20
LIUZHOU OVM MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a kind of anti-skid key with fork ear cone type anchoring steel strand cable and its construction method, so that it can not only solve the series of problems caused by the use of finished cables, but also solve the problem of anchorage. The shortcomings of high production cost, large drag coefficient of the cable, and low ability to resist wind, rain and vibration

Method used

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  • Conical anti-slide tie anchoring strand stayed cable with forked ear and construction method of cable
  • Conical anti-slide tie anchoring strand stayed cable with forked ear and construction method of cable
  • Conical anti-slide tie anchoring strand stayed cable with forked ear and construction method of cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] An anti-skid key with fork lugs for anchoring a steel strand cable, comprising a fixed-end anchor 1 with fork lugs, a cable body 2, and a tension-end anchor 3, wherein:

[0084] The cable body 2 is a steel strand bundle composed of multiple parallel unbonded prestressed steel strands, and each strand of unbonded prestressed steel strands (hereinafter referred to as steel strands) is a PE sheathed steel strand Wire, and both ends of the steel strand are bare steel strands after stripping the PE sheath;

[0085] The fixed-end anchor 1 with fork lugs includes fork lugs 11, conical anti-skid key anchorage anchors 12;

[0086] The fork lug is a conventional structure, the upper end of the fork lug has two side lug plates, and the two side lug plates are provided with coaxial pin holes; the lower end of the fork lug has an internal thread hole for connecting the anchor;

[0087] The conical anti-skid key anchor 12 includes a conical anti-skid key 122, an anchor plate 123, a ...

Embodiment 2

[0096] An anchoring steel strand cable with a fork ear cone type anti-skid key, the basic structure of the cable is the same as that of Embodiment 1, including a fixed end anchor with fork ears 1, a cable body 2, and a tension end anchor 3. The difference is that the positions of the filling holes are different. There is no filling hole A on the sealing cylinder 125 of the second embodiment, and there is no filling hole B112 on the lower end of the fork ear 11. On the anchor plate 123 along the axis There are symmetrical perfusion holes C and perfusion holes D. The concrete structure of present embodiment two is as follows:

[0097] An anti-skid key with fork lugs for anchoring a steel strand cable, comprising a fixed-end anchor 1 with fork lugs, a cable body 2, and a tension-end anchor 3, wherein:

[0098] The cable body 2 is a steel strand bundle composed of multiple parallel unbonded prestressed steel strands, and each strand of unbonded prestressed steel strands (hereinaf...

Embodiment 3

[0110] A construction method for anchoring a steel strand cable with a fork ear cone type anti-skid key as described in Embodiment 1. The method is to first fix the anchorage at the tension end on the pre-embedded pressure-bearing embedded part at the end of the beam , then pass the steel strand through the conical anti-skid key anchorage, and squeeze the conical anti-skid key at one end of the steel strand, so that the conical outer surface of the conical anti-skid key is embedded in the cone of the anchor plate In the hole; connect the fork lugs with the conical anti-skid key anchorage to form a fixed-end anchorage with fork lugs, and pin the fixed-end anchorage with fork lugs to the lug plate at the tower end; the traction steel strand The other end passes through the anchorage at the tension end, and a single steel strand is stretched with a tension jack until the cable force is calculated and then anchored, until all the steel strands are installed and tensioned, then the ...

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Abstract

The invention discloses a conical anti-slide tie anchoring strand stayed cable with a forked ear and a construction method of the cable, relating to a strand stayed cable and a construction method thereof. A fixed end anchor of the cable comprises the forked ear and a conical anti-slide tie anchor device, wherein the conical anti-slide tie anchor device comprises a conical anti-slide tie, an anchor plate and a sealing cylinder, the conical anti-slide tie is a round sleeve with a conical outer surface at one end, and the conical outer surface is embedded in a conical hole of the anchor plate. The method comprises the following steps: penetrating a steel strand through the conical anti-slide tie anchor device and squeezing the conical anti-slide tie, so that the conical outer surface of the conical anti-slide tie is embedded in the conical hole of the anchor plate; pin-jointing the fixed end anchor with the forked ear to an ear plate at the end of a tower; penetrating the other end of the pulled steel strand through a tension-end anchor, tensioning the single steel strand to achieve the calculated cable force and then anchoring, and after all the steel strands are tensioned, pressing a clamp. The strand stayed cable and the construction method thereof have the characteristics that anchoring is reliable, the size of the anchor, the production cost, and the drag coefficient of the cable can be can be reduced, the resistance to rain-wind induced vibration is improved, and the cable is easy to popularize and apply.

Description

technical field [0001] The invention relates to a steel strand cable and a construction method thereof, in particular to a steel strand cable anchored by an anti-skid key with fork ear cones and a construction method thereof. Background technique [0002] At present, the lug type cables are mainly cold cast anchors, hot cast anchor steel wire cables and whole bundles of extruded steel strand cables. These two kinds of cables are finished cables and have the following disadvantages: (1) The manufacturing process is complicated It is cumbersome and requires high accuracy of cutting length. (2) The outer sheath generates internal stress during hot extrusion molding. During the tensioning process of the cable, internal stress will also be generated due to the elongation of the cable. During the use of the cable, the HDPE sheath will also be exposed to light, The impact of temperature changes and alternating loads, these factors will cause stress cracking in HDPE sheaths. (3) I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/00E01D21/00
CPCE01D19/00E01D21/00
Inventor 庞贤剑闫云友李华萍黄芳玮谢正元庞维林王强周俊文黄永玖石伟杨雄文刘进谢锦邱敏梁冰
Owner LIUZHOU OVM MASCH CO LTD
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