Tube-expanded airtight stay cable and application method thereof

A technology of expansion sealing and cable body, applied in the cable field, can solve problems such as failure of protective measures and aging of sealing materials.

Active Publication Date: 2013-03-06
SHANGHAI PUJIANG CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the protection method of the anchorage part was generally to put the anchorage into the cable guide, fill part of the sealing material in the cable guide for protection, and...

Method used

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  • Tube-expanded airtight stay cable and application method thereof
  • Tube-expanded airtight stay cable and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A pipe expansion and sealing type cable, including an anchor guard 1, a quick connector 11, an air outlet plug 12, an anchor 2, a nut 3, a connecting cylinder 4, a cable body 5, a pre-embedded cable guide 6, and an anchor plate 61. Aluminum foil tube 7 and valve core 71, such as figure 1 As shown, the specific structure is: one end of the cable body 5 is inserted into the connecting tube 4 and inserted into the anchor cup of the anchor tool 2 through the connecting tube 4, and the anchor head of the anchor tool 2 is inserted into the embedded cable guide 6 and is inserted from the embedded cable guide 6. One end surface of the embedded cable conduit 6 passes through, the anchor 2 and the embedded cable conduit 6 are connected by a nut 3, the other end of the cable body 5 passes through the other end surface of the embedded cable conduit 6, and the anchor pad 61 is fixedly set on the pre-embedded cable conduit 6. On the outside of the buried cable conduit 6, the anchor g...

Embodiment 2

[0028] A tube expansion and sealing type cable, including an anchor guard 1, a quick connector 11, an air outlet plug 12, an anchor 2, a nut 3, a connecting cylinder 4, a cable body 5, a pre-embedded cable guide 6, and an anchor plate 61. Aluminum foil tube 7 and valve core 71, the specific structure is as follows figure 1 Shown, with embodiment 1 same.

[0029] The installation steps of this embodiment are the same as those of Embodiment 1.

[0030] When the present embodiment is used, proceed as follows:

[0031] a. Inflate the aluminum foil tube 7 through the valve core 71 to expand the aluminum foil tube 7 and fill the gap between the cable body 5 and the embedded cable guide 6;

[0032] b. Connect the quick connector 11 on the embedded cable conduit 6 with the hygrometer;

[0033] c. Connect the quick connector 11 on the embedded cable conduit 6 with the blower, and fill the embedded cable conduit 6 with dry air or inert gas with the blower;

[0034] d. Open the air o...

Embodiment 3

[0036] A tube expansion and sealing type cable, including an anchor guard 1, a quick connector 11, an air outlet plug 12, an anchor 2, a nut 3, a connecting cylinder 4, a cable body 5, a pre-embedded cable guide 6, and an anchor plate 61. Aluminum foil tube 7 and valve core 71, the specific structure is as follows figure 1 Shown, with embodiment 1 same.

[0037] The installation steps of this embodiment are the same as those of Embodiment 1.

[0038]When the present embodiment is used, proceed as follows:

[0039] a. Inflate the aluminum foil tube 7 through the valve core 71 to expand the aluminum foil tube 7 and fill the gap between the cable body 5 and the pre-embedded cable guide 6, thereby realizing the sealing of the cable body 5;

[0040] b. Connect the quick connector 11 on the anchorage protective cover 1 with the hygrometer, so as to realize the monitoring of the humidity in the anchorage protective cover 1;

[0041] c. Connect the quick connector 11 on the anchor ...

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PUM

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Abstract

The invention relates to the field of stay cables for cable-stayed bridges, in particular to a tube-expanded airtight stay cable and an application method thereof. The tube-expanded airtight stay cable comprises an anchor (2), a nut (3), a connecting tube (4), a cable body (5) and an embedded cable guide tube (6) and is characterized by further comprising an anchor shield (1), a fast connector (11), an air outlet plug (12), an anchor bearing plate (61), an aluminum foil tube (7) and a valve core (71). The aluminum foil tube (7) is disposed between the cable body (5) and the embedded cable guide tube (6). The application method of the tube-expanded airtight stay cable is characterized by including the sequential steps of inflating the aluminum foil tube (7) through the valve core (71) and the like. The tube-expanded airtight stay cable is simple in structure, high in airtightness, long in service life and widely applicable.

Description

technical field [0001] The invention relates to the field of cables used for cable-stayed bridges, in particular to a tube-expanded sealing type cable and a method for using the same. Background technique [0002] The cable is the upper structure of the cable-stayed bridge, and is the most important force-bearing part of the cable-stayed bridge, bearing the weight of the bridge deck. The safety of the cables is related to the safe operation of the bridge, as well as the safety of pedestrians and vehicles on the bridge. The cable is composed of an anchor and a cable body. The cable body is generally composed of high-strength galvanized steel wire and a polyethylene sheath. The polyethylene sheath protects the steel wire from corrosion. The anchors are located at both ends of the cable body. Judging from the current anti-corrosion status of bridge cables, generally speaking, in the entire cable system, the anchorage parts are relatively easy to be corroded because they are ex...

Claims

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Application Information

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IPC IPC(8): E01D19/16E01D19/14E01D21/00
Inventor 罗国强张海良朱金林顾庆华谢飞
Owner SHANGHAI PUJIANG CABLE
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