CN110890736A - Small-sized cable trench and construction method thereof - Google Patents

Abstract

The invention provides a small cable trench, comprising: a cable trench cushion below the ground level, a prefabricated U-shaped cable trench formed by a prefabricated U-shaped cable trench structural member, the cable trench structural member is embedded with cable trench steel bars, and the cable trench The ends of the steel bars pass through the top surface of the U-shaped cable trench and are embedded in the ground concrete 4. The ground concrete and the prefabricated U-shaped cable trench together form the inner wall of the trench, and angle steel is provided along the trench. The invention also provides a construction method for a small cable trench. The prefabricated U-shaped cable trench is prefabricated with reserved trench wall steel bars; Before the concrete is poured, the horizontal construction joint is provided with an expansion waterstop; the angle steel is fixed on the ground steel bar, and finally the ground concrete is poured into shape. The advantages of this scheme are: high efficiency; eliminating uneven settlement of ground and cable trenches; reducing site usage, and factory prefabrication can ensure the quality of the molded appearance of the components.

Description

A small cable trench and its construction method

technical field

The invention belongs to the technical field of engineering construction, in particular to a small cable trench and a construction method thereof, which improves the construction simplicity of the small cable trench.

Background technique

With the continuous development of urban infrastructure, many changes have taken place in underground space technology, and the application of cables and pipeline trenches is also more common, which has great advantages over traditional direct burial, which can not only solve the requirements of use but also solve The requirements for maintenance and replacement, but with the ever-changing social changes and the continuous improvement of people's aesthetic requirements, the requirements for the appearance quality of facilities and detailed structures are getting higher and higher, and continuous updating and innovation are still required, which is also a construction quality. difficulty.

In traditional cable trench construction, steel formwork, wooden formwork and steel pipe support are used for installation, and concrete is poured in the trench on site, which will cause the disadvantages of large labor demand, long cycle, large use of turnover materials, complicated process, and construction. After completion, the uneven settlement of the vertical construction joints between the cable trench and the ground will cause unevenness of the ground, which will affect the overall quality of the interior.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides a small cable trench and a construction method thereof, so as to improve the construction speed of the trench, optimize the process, and ensure the appearance quality after molding.

The technical scheme adopted in the present invention is:

A small cable trench that is easy to construct is characterized by comprising: a cable trench cushion located below the ground level, a prefabricated U-shaped cable trench formed by a prefabricated U-shaped cable trench structural member, and a cable trench embedded in the cable trench structural member The end of the steel bar and the cable channel steel bar penetrates the top surface of the U-shaped cable channel structure and is buried in the ground concrete. The ground concrete and the prefabricated U-shaped cable channel together form the inner wall of the channel, and the channel is provided with angle steel.

Further, angle steel anchoring bars are embedded in the ground concrete to reinforce and tighten the angle steel.

Further, expansion water stop strips are also arranged between the structural components of each cable trench.

Further, the thickness of the concrete layer is greater than the thickness of the cable trench cushion.

Further, the prefabricated U-shaped cable trench structure is a concrete prefab.

In order to achieve the above purpose, the present invention also provides a construction method for a small cable trench: first, prefabricate the U-shaped cable trench below the ground concrete according to a preset size in a factory. Reserve the reinforcement bars for the trench wall; then, excavate and pour the concrete cushion, install the prefabricated U-shaped cable trench, and adjust and install the prefabricated U-shaped cable trench in sections; next, the prefabricated U-shaped cable trench is installed Then, before the ground concrete is poured, the horizontal construction joint is provided with an expansion water stop; finally, before the ground concrete is poured, the angle steel is fixed on the ground steel bar, and the ground concrete is poured and formed.

The advantages and positive effects of the present invention are as follows: due to the above technical solution (1) the cable trench and the ground are divided into two parts, the combination of two process methods of prefabrication and cast-in-place is formed, the prefabrication in advance and the assembled installation of on-site components are realized, and the overall (2) It can eliminate the uneven settlement of the ground and the cable trench; (3) Reduce the use of the site, and the factory prefabrication can ensure the quality of the molding appearance of the components; (4) The cycle is short, and the labor and turnover materials are used. (5) The overall construction speed is improved, and it is applicable in the case of tight construction period.

Description of drawings

1 is a sectional view of a small cable trench according to an embodiment of the present invention

Detailed ways

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In describing specific embodiments of the present invention, the perspective of FIG. 1 is defined as a cross-sectional view of this small cable trench. In the description of the embodiments of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the orientations or positional relationships shown in the drawings, only It is to facilitate the description of the present invention and to simplify the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "arranged", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

Referring to the cross-sectional view of the small cable trench according to the embodiment of the present invention shown in FIG. 1, it includes: a cable trench cushion 1 located below the ground level, the cushion provides support and reference for the entire device, and ensures the reliability of the structure, because it can be used in the It is produced on the construction site, the operation is relatively simple, and the operation is not limited by specific conditions; the prefabricated U-shaped cable trench 2 formed by the prefabricated U-shaped cable trench structural components adopts an overall layout, so that the trench structure is not easily damaged, and can use factory Standardized production and direct application during construction; cable trench steel bars 3 are embedded inside the cable trench structure to further strengthen the structural strength of the device. The concrete and the prefabricated U-shaped cable trench together form the inner wall of the trench, and angle steel 6 is provided along the trench.

Example:

An easy-to-construct small cable trench, including:

The cable trench cushion 1 located below the ground level, the prefabricated U-shaped cable trench 2 formed by the prefabricated U-shaped cable trench structure, the cable trench reinforcement 3 is embedded in the cable trench structure, and the end of the cable trench reinforcement goes out of the U-shaped cable trench The top surface of the structural member is embedded in the ground concrete 4 , the ground concrete and the prefabricated U-shaped cable trench together form the inner wall of the trench, and angle steel 6 is provided along the trench.

Further, angle steel anchoring bars are embedded in the ground concrete to reinforce and tighten the angle steel 6 .

Further, expansion water stop strips 7 are also arranged between the structural members of each cable trench.

Further, the thickness of the concrete layer is greater than the thickness of the cable trench cushion.

Further, the prefabricated U-shaped cable trench structure is a concrete prefab.

The following describes a construction method for a small cable trench of the present invention in conjunction with specific examples.

First, prefabricate the U-shaped cable trench below the ground concrete according to the preset size and prefabricate the trench wall steel bars during prefabrication; then, excavate and pour the concrete cushion, install the Prefabricated U-shaped cable trenches, adjust and install the prefabricated U-shaped cable trenches in sections; next, after the prefabricated U-shaped cable trenches are installed, before the ground concrete is poured, the horizontal construction joints are set with expansion waterstops ; Finally, before the ground concrete is poured, the angle steel is fixed on the ground steel bar, and the ground concrete is poured and formed.

The embodiments of the present invention have been described in detail above, but the above contents are only preferred embodiments of the present invention, and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still belong to the scope of the patent of the present invention.

Claims (6)

1. The utility model provides an easy small-size cable pit of being under construction which characterized in that includes:

the cable trench comprises a cable trench cushion layer below a ground plane and a prefabricated U-shaped cable trench formed by prefabricated U-shaped cable trench structural parts, wherein cable trench steel bars are embedded in the cable trench structural parts, the tail ends of the cable trench steel bars penetrate out of the top surfaces of the U-shaped cable trench structural parts and are embedded into ground concrete, the ground concrete and the prefabricated U-shaped cable trench jointly form a trench inner wall, and angle steel is arranged on the trench edge.

2. The easily constructed small cable trench as claimed in claim 1, wherein an angle steel anchoring rib is further embedded in the ground concrete to reinforce and tension the angle steel.

3. The small cable trench easy to construct of claim 1, wherein expansion water stop bars are further arranged between the cable trench structural members.

4. The easily constructed small cable trench as claimed in claim 1, wherein the thickness of the concrete layer is greater than that of the cable trench mat.

5. The compact cable trench of claim 1, wherein the prefabricated U-shaped trench structure is a concrete prefabricated member.

6. A method for constructing a small cable trench according to claim 1, wherein:

prefabricating a U-shaped cable trench below the ground concrete in a factory according to a preset size, and reserving trench wall reinforcing steel bars when prefabricating the U-shaped cable trench;

b, excavating and pouring a concrete cushion layer, installing the prefabricated U-shaped cable trench, and adjusting and installing the prefabricated U-shaped cable trench in a segmented manner;

c, after the prefabricated U-shaped cable trench is installed, arranging an expansion water stop strip on the horizontal construction joint before the ground concrete is poured;

and D, before the ground concrete is poured, fixing the angle steel on ground steel bars, and pouring and molding the ground concrete.

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