CN212505900U

CN212505900U - Stay cable positioner

Info

Publication number: CN212505900U
Application number: CN202020804154.7U
Authority: CN
Inventors: 柏国清; 曹洪武; 秦煜; 郝玉柱; 王应良; 徐金志; 袁明; 涂文才; 束永胜; 陈宇; 雷敏; 曾忠; 秦羽
Original assignee: Vsl Engineering Co ltd
Current assignee: Vsl Engineering Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2021-02-09
Anticipated expiration: 2030-05-14

Abstract

The utility model belongs to the technical field of the engineering construction, in particular to cable locator, including the positioning seat, be equipped with the via hole that supplies the steel strand wires to run through on the positioning seat, via hole and steel strand wires one-to-one arrange and interval arrangement between the adjacent via hole. The utility model discloses in, the locator makes steel strand wires interval arrangement respectively, need not to dismantle the locator just like this and can realize the dismantlement and the change of target steel strand wires, when changing the cable promptly, the operation personnel need not to be under construction in the structure outside, can effectively promote construction operation personnel's personal safety, are showing simultaneously and promote the change efficiency.

Description

Stay cable positioner

Technical Field

The utility model belongs to the technical field of the engineering construction, in particular to cable locator.

Background

The inhaul cable is a tension member which is fixed on a structure by a plurality of steel strands through anchor assemblies at two ends. The anchoring section of the inhaul cable is a connecting section of the inhaul cable and the anchorage device assembly and is an inhaul cable anchoring part for transmitting cable force to the bridge structure; the transition section is a cable section from the inlet of the conduit to the mouth of the anchoring section; the free section is the cable body of acting as go-between outside anchor section, the changeover portion, and the outside of the cable body of acting as go-between of free section is wrapped with outer protecting casing usually, protects the cable body of acting as go-between to avoid atmospheric corrosion. The guide pipe is a pre-buried pipe which is arranged in the structure and is used for the stay cable to pass through. The front end of the anchor assembly within the conduit is typically provided with a locator to extrude and shape the steel strands making up the cable into a compact bundle to reduce the cable body volume and thus reduce the windage of the free section. When the guy cable is replaced, operators need to be arranged on the inner side and the outer side of the structure respectively, the operators on the outer side of the structure can detach the old steel strand after detaching the positioner and releasing the positioning of the old steel strand; after the new steel strand is pulled and tensioned, an operator positioned outside the structure needs to restore the positioner, and the replacement steps of the stay cable are complicated and the replacement efficiency is low. The two ends of a guy cable of the cable-stayed bridge are usually anchored on a bridge body and a bridge tower respectively, when the guy cable of the cable-stayed bridge is replaced by adopting the prior art, vehicles need to be limited to pass for protecting operating personnel, even if the situation is high, the operating personnel located on the bridge floor and the outer vertical surface of the bridge tower are still very dangerous because the communication between the operating personnel inside and outside the bridge body and inside and outside the bridge tower is not smooth and the height of the bridge tower is large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cable locator can promote the cable and change efficiency, makes the change operation safer.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a cable locator, includes the positioning seat, is equipped with the via hole that supplies the steel strand wires to run through on the positioning seat, and the via hole is arranged and the interval arrangement between the adjacent via hole with the steel strand wires one-to-one.

Compared with the prior art, the utility model discloses there are following technological effect: the locator makes steel strand wires interval arrangement respectively, need not to dismantle the locator just like this and can realize the dismantlement and the change of target steel strand wires, when changing the cable promptly, the operation personnel need not to be under construction in the structure outside, can effectively promote construction operation personnel's personal safety, are showing simultaneously and promote change efficiency.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

FIG. 1 is a schematic view of the present invention in use;

FIG. 2 is a schematic view of a positioner;

fig. 3 is a sectional view a-a in fig. 2.

In the figure: 10. the cable comprises a stay cable, 11 steel strands, 11a target steel strands, 20 locators, 21 positioning seats, 22 via holes, 23 positioning pipes, 24 bushings, 30 anchors and 31 guide pipes.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.

The utility model provides a cable locator, includes positioning seat 21, is equipped with the via hole 22 that supplies steel strand wires 11 to run through on the positioning seat 21, and via hole 22 and steel strand wires 11 one-to-one arrange and interval arrangement between the adjacent via hole 22. As shown in fig. 3, the cable 10 is generally composed of a plurality of steel strands 11, and the through holes 22 are spaced apart from each other, so that the steel strands 11 are spaced apart from each other at the positioner 20. That is to say, there is no interaction force between adjacent steel strands 11, and the load-bearing of other steel strands 11 is not affected when each steel strand 11 is tensioned, released, pulled, replaced, etc.

When the cable is used, the number of the through holes 22 may also be greater than the number of the steel strands forming the cable 10, as long as each steel strand 11 passes through different through holes 22, and the steel strands 11 are positioned at intervals.

As shown in fig. 2, in this embodiment, the spacing between adjacent vias 22 decreases from adjacent anchor ends to distal anchor ends. Therefore, the distance between the steel strands 11 of the inhaul cable 10 at the free section is smaller, and wind resistance is reduced; the spacing between each steel strand 11 of cable 10 at the anchor section is great, is favorable to being under construction to single steel strand 11 of cable 10.

In order to protect the wall of the steel strand 11 and the via hole 22 and prevent the steel strand 11 and the via hole 22 from being damaged during rope threading or use, a flexible lining is laid on the inner wall surface of the via hole 22.

An annular bushing 24 made of a flexible material is provided outside the positioning socket 21. The annular bushing 24 is in clearance fit with the guide tube 31 to limit displacement of the cable body in the radial direction of the guide tube 31.

In this embodiment, the positioning seat 21 is formed by pouring concrete, the positioning tube 23 is disposed on the outer side of the positioning seat 21, the positioning tube 23 is made of metal, and the bushing 24 is sleeved on the positioning tube 23. Namely, the positioning tube 23 not only protects the integrity of the base body of the positioning base 21, but also realizes the reliable connection between the positioning base 21 and the bushing 24.

Specifically, as shown in fig. 2, the positioning tube 23 is in a stepped tubular shape, and the large diameter section is arranged adjacent to the side where the anchor is located, and the small diameter section is arranged away from the side where the anchor is located. The wall thickness of the large-diameter section of the positioning pipe 23 is greater than that of the small-diameter section, and the joint of the large-diameter section and the small-diameter section of the inner pipe wall of the positioning pipe 23 is in conical annular surface transition connection. The large and small diameter sections of the outer tube wall are connected by a step surface perpendicular to the tube core, the bushing 24 is sleeved on the small diameter section of the positioning tube 23, the bushing 24 is tightly matched with the positioning tube 23, and the end surface of the bushing is connected with the step surface of the outer tube wall of the positioning tube 23 in an abutting mode.

Adopt the utility model discloses a when bridge suspension cable changes, adopt following step:

step A, releasing the tension of a target steel strand 11 a;

step B, disassembling the target steel strand 11a with the tensile force removed in the step A, and simultaneously drawing a new steel strand;

and C, tensioning the new steel strand to complete the installation of the new steel strand.

And D, repeating the step A until all the target steel strands 11a are replaced.

Because the target steel strand 11a and other bearing parts at the positioner 20 are arranged at intervals, and the intervals meet the single disassembly requirement of the target steel strand 11a, the target steel strand 11a can be disassembled and replaced without disassembling the positioner 20, and the cable replacement step is greatly simplified. Meanwhile, the operation outside the component is not needed, so that the personal casualty accident caused by the breakage of the steel strand or the connection failure of the end part of the steel strand can be avoided.

Claims

1. A stay cable locator which characterized in that: including positioning seat (21), be equipped with on positioning seat (21) and supply via hole (22) that steel strand wires (11) run through, via hole (22) and steel strand wires (11) one-to-one arrange and interval arrangement between adjacent via hole (22).

2. A cable positioner according to claim 1, wherein: the spacing between adjacent vias (22) decreases progressively from adjacent anchor ends to remote anchor ends.

3. A cable positioner according to claim 1, wherein: an annular bushing (24) made of flexible materials is arranged on the outer side of the positioning seat (21).

4. A cable positioner according to claim 3, wherein: the positioning seat (21) is formed by pouring concrete, a positioning pipe (23) is arranged on the outer side of the positioning seat (21), and the lining (24) is sleeved on the positioning pipe (23).

5. A cable locator according to claim 4, wherein: the positioning pipe (23) is integrally in a step tubular shape, the large-diameter section is arranged close to the side where the anchorage device is located, and the small-diameter section is arranged far away from the side where the anchorage device is located.

6. A cable locator according to claim 5, wherein: the wall thickness of the large-diameter section of the positioning pipe (23) is larger than that of the small-diameter section, the joint of the large-diameter section and the small-diameter section of the inner pipe wall of the positioning pipe (23) is in conical ring surface transitional connection, the joint of the large-diameter section and the small-diameter section of the outer pipe wall is connected through a step surface vertical to the pipe core, the small-diameter section of the positioning pipe (23) is sleeved with the bushing (24), and the end surface of the bushing (24) and the step surface of the outer pipe wall of the positioning pipe (23) are connected in a supporting mode.

7. A cable positioner according to claim 1, wherein: the positioning tube (23) is made of metal material.

8. A cable positioner according to claim 1, wherein: the inner wall surface of the through hole (22) is coated with a flexible lining.