CN111677190A

CN111677190A - Flat cable body

Info

Publication number: CN111677190A
Application number: CN202010041316.0A
Authority: CN
Inventors: 姚永湖; 支燕武; 杨国林; 刘涛; 黄弘生; 辛建忠; 罗盛敏; 侯春辉; 唐小丽; 宋顺心; 张广颂; 田山坡; 张伟康
Original assignee: Liuzhou City Qiaosha Engineering Tube Material Co ltd; China Railway Design Corp
Current assignee: Liuzhou City Qiaosha Engineering Tube Material Co ltd; China Railway Design Corp
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-09-18

Abstract

The application relates to the field of buildings, especially relates to a flat cable body, flat cable body includes: a main body portion including at least two tendons; a cover disposed outside the body. The method solves the problems of difficulty in tendon arrangement (rope threading) and incompact grouting of the prestressed tendons in the pore channels, so that the prestressed tendons are better protected, the service life of the structure is ensured, and the space is saved when the flat cable body is used for an external cable; the problem that the thin-wall component and the transverse prestressed tendon of the bridge are difficult to arrange (thread) is solved, and the construction is convenient; and meanwhile, the problems that the flat prestressed duct is inconvenient to grout and is not compact in grouting are solved, so that the prestressed ribs are better protected, and the service life of the structure is prolonged.

Description

Flat cable body

Technical Field

The application relates to the field of buildings, in particular to a flat cable body.

Background

The existing thin-wall member and bridge transverse prestress usually adopt the construction scheme of pre-embedded corrugated pipes, prestressed tendons are penetrated after concrete is poured, and tensioning and grouting are carried out. The construction scheme has the following problems: 1. if the link is not well controlled, the existing pore channel can be blocked, and the construction progress and quality are influenced; 2. the cable is inconvenient to pass through; 3. grouting is difficult, and incompact phenomenon exists, thereby affecting the durability of the structure.

The existing prestressed construction in annular members, such as sewage treatment pools, water diversion culverts of hydropower stations and the like, usually adopts the construction processes of pre-embedding corrugated pipes, cable penetrating, tensioning, grouting and anchor sealing, and prestressed bars in the process channels are mutually wound, and the prestressed bars are stressed to have deviation after tensioning, and meanwhile, grouting also has the problem of incompact.

The existing external prestressed cable is mostly integrated. Namely, a plurality of prestressed tendons are arranged according to a regular hexagon or a hexagonal structure and externally extruded PE to form a circular cable body, and the used external prestressed anchor is circular and needs to have enough space (particularly height).

Disclosure of Invention

The present application is directed to solving at least one of the problems in the prior art as described above.

To this end, the present application proposes a flat cable body comprising: a main body portion including at least two tendons; a cover disposed outside the body.

Furthermore, the prestressed tendons in the main body part are arranged side by side, and the prestressed tendons are placed in a straight line in the cross section of the flat cable body.

Further, the prestressed tendons are arranged side by side and closely.

Furthermore, the prestressed tendons are arranged side by side at intervals.

Further, the coating part is made of plastic extruded on the outer side of the main body part.

Further, the cladding comprises at least two layers of plastic.

Further, the covering part is directly fixed to the main body part.

Further, the main body part and the coating part can slide mutually.

Further, the flat cable body further comprises an anticorrosive material, and the anticorrosive material is arranged between the main body part and the coating part.

The flat cable body can be used for prestress construction in thin-wall components, transverse components of bridges, middle towers, annular components and the like, and solves the problems that prestressed tendons in a duct are difficult to arrange (penetrate) and grouting is not compact, so that the prestressed tendons are better protected, the service life of the structure is ensured, and the space is saved when the flat cable body is used for external cables; the problem that the thin-wall component and the transverse prestressed tendon of the bridge are difficult to arrange (thread) is solved, and the construction is convenient; and meanwhile, the problems that the flat prestressed duct is inconvenient to grout and is not compact in grouting are solved, so that the prestressed ribs are better protected, and the service life of the structure is prolonged.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a first embodiment of the present application;

FIG. 2 is a second embodiment of the present application;

FIG. 3 illustrates a third embodiment of the present application;

FIG. 4 shows a fourth embodiment of the present application;

fig. 5 shows a fifth embodiment of the present application.

Fig. 6 shows a sixth embodiment of the present application.

In the figure: 1. a main body portion; 11. prestressed tendons; 2. a covering part; 3. an epoxy material; 4. and (3) an anticorrosive material.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

A flat cable body, comprising: a main body part 1, wherein the main body part 1 comprises at least two prestressed tendons 11; and a covering part 2, wherein the covering part 2 is arranged outside the main body part 1. As shown in fig. 1, the main body 1 is composed of four prestressed tendons 11, and the prestressed tendons 11 are woven by multiple steel strands. That is, the tendon 11 may be a single tendon or a group of 7 tendons 11. It is conceivable that the tendon 11 may also be a plurality of other braided tendons 11.

The prestressed tendons 11 in the main body part 1 are arranged side by side, and the prestressed tendons 11 are placed in a straight line in the cross section of the flat cable body. The prestressed tendons 11 are placed in a straight line in the cross section of the flat cable body, that is, more than two prestressed tendons 11 are placed side by side in sequence, and the cross section of the prestressed tendons 11 is in a flat strip shape, that is, the prestressed tendons 11 are not crossed and not wound.

The tendons 11 are arranged side by side next to each other.

The prestressed tendons 11 are arranged side by side at intervals.

The coating part 2 is made of plastic extruded outside the main body part 1.

The cladding 2 comprises at least two layers of plastic.

The covering portion 2 is directly fixed to the main body portion 1.

The main body 1 and the covering 2 are slidable with respect to each other.

The flat cable body further comprises an anticorrosive material 4, and the anticorrosive material 4 is arranged between the main body part 1 and the coating part 2.

As shown in the drawings, the covering 2 in the embodiment of the present application may have various shapes and be suitable for various environments. Moreover, the surface of the tendon 11 in this application may be further provided with an epoxy material 3 to further protect the tendon 11.

The flat cable body comprises two or more prestressed tendons 11 arranged side by side, the cross sections of the prestressed tendons are arranged in a straight line (or a long shape), one or two or more layers of PE (or other plastics) are extruded outside the flat cable body to wrap the flat cable body, and the cross section of the flat cable body is in a flat shape (as shown in figure 1) or similar flat shape (as shown in figures 2 and 3). The prestressed tendons 11 can be closely arranged (as shown in fig. 4) or arranged at intervals (as shown in fig. 1, 2 and 3); the prestressed tendons 11 and the externally extruded PE (or other plastics) can be in direct contact and cannot slide (bonding type, as shown in figure 6), or anticorrosive materials 4 such as grease, paraffin and the like are filled between the prestressed tendons 11 and the plastics to form a unbonded cable body (as shown in figure 5). Namely, the prestressed flat cable body is divided into: the cable body is characterized in that the cross section of the cable body is flat, and the prestressed tendons 11 of the transverse section of the cable body are linearly (or rectangularly) arranged. The problem that the thin-wall component and the transverse prestressed tendon 11 of the bridge are difficult to arrange (thread) is solved, and the construction is convenient; meanwhile, the problems that the flat prestressed duct is inconvenient to grout and is not compact in grouting are solved, so that the prestressed ribs 11 are better protected, and the service life of the structure is prolonged.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the structures or elements so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered as limiting. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A flat cable body, comprising:

a main body part (1), the main body part (1) comprising at least two tendons (11);

a covering part (2), wherein the covering part (2) is arranged outside the main body part (1).

2. The flat cable body according to claim 1, characterized in that the tendons (11) in the main body (1) are arranged side by side, the tendons (11) lying in a straight line in the cross section of the flat cable body.

3. The flat cable body as claimed in claim 2, characterised in that said tendons (11) are placed side by side next to each other.

4. The flat cable body according to claim 2, characterized in that said tendons (11) are arranged side by side at intervals.

5. Flat cable body according to any of claims 1-4, characterised in that the coating (2) is a plastic extruded on the outside of the body part (1).

6. Flat cable body according to claim 5, characterized in that said coating (2) comprises at least two layers of plastic.

7. Flat cable body according to claim 5, characterized in that said coating (2) is fixed directly to said main body (1).

8. Flat cable body according to claim 5, characterised in that the main body (1) and the coating (2) are mutually slidable.

9. The flat cable body according to claim 8, characterized in that it further comprises a corrosion resistant material (4), said corrosion resistant material (4) being arranged between said main body (1) and said coating (2).