CN204243698U - A reinforced concrete assembled cable trench - Google Patents

Abstract

A kind of steel reinforced concrete assembling cable trough, it is connected by a section U-shaped ditch body and forms, described U-shaped ditch body is assembled by symmetrical two halves L-type ditch body, on the respective splicing edge of base plate stitching portion, correspondence is laterally reserved with multiple reinforcing steel bar connecting sleeve tube respectively towards interior setting, and when two halves L-type ditch body is bolted together mutually, in the reinforcing steel bar connecting sleeve tube that two halves L-type ditch body is corresponding, be inserted with the bar dowel of location and connection function; The respective splicing edge of described two halves L-type ditch body is horizontally arranged with two rows, often arranges multiple reinforcing steel bar connecting sleeve tube; And be vertically arranged with 1/4 circle breach on the respective splicing edge top of two halves L-type ditch body, and form longitudinal drainage groove at mutual assembled rear formation 1/2 circular groove of two halves L-type ditch body; It has convenient transportation, it is easy to splice, waterproof is reliable, draining is unobstructed, can the feature such as assembled in situ.

Description

A reinforced concrete assembled cable trench

technical field

The utility model relates to a reinforced concrete assembled cable trench, which is suitable for power transmission and transformation projects such as substations, converter stations, power plants and the like which require the arrangement of assembled cable trenches.

Background technique

Cable trenches are an integral part of substations. With the increasing degree of modular construction of domestic substations, the modularization of cable trenches has been further put on the agenda. Due to the complex construction process and long construction period of the traditional cable trench, and the cable trench is often vertical and horizontal across the entire substation, improving the construction process of the cable trench can quickly increase the construction progress of the project.

The design of prefabricated smart substations should follow the construction principles of "standardized design, factory processing, and prefabricated construction", actively carry out technological innovation and concept innovation, and rationally adopt new technologies, new materials, and new equipment to optimize design functions. At present, there are two main forms of prefabricated cable trench materials: ordinary concrete structure and composite material structure, and "U" shaped structural section. The "U"-shaped structural section is inconvenient for transportation, and ordinary concrete prefabricated cable trenches are heavy and bulky, so they are rarely used. Due to the high cost of prefabricated cable trenches made of inorganic composite materials, its large-scale application is limited.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a method that focuses on solving the problems of transportation space, installation weight, connection point waterproof, longitudinal slope, etc., without secondary internal painting and slope finding work; to achieve convenient transportation, Reinforced concrete prefabricated cable trench that requires easy splicing, reliable waterproofing, smooth drainage, and on-site assembly.

The purpose of this utility model is accomplished through the following technical scheme, a reinforced concrete assembled cable trench, which is composed of a section of U-shaped trench body connected, and the U-shaped trench body is composed of two symmetrical L-shaped The groove body is assembled. On the respective splicing edges of the bottom plate joints, there are a number of inwardly set steel bar connection sleeves correspondingly reserved in the horizontal direction. When the two halves of the L-shaped groove body are assembled together, the two halves of the L-shaped A short steel bar for positioning and connection is inserted into the steel bar connecting sleeve corresponding to the groove body.

Two rows of upper and lower rows are horizontally arranged on the splicing sides of the two halves of the L-shaped groove body described in the utility model, and each row has a plurality of steel bar connection sleeves; 4 circular gaps, and after the two halves of the L-shaped grooves are assembled with each other, a 1/2 circular groove is formed to form a longitudinal drainage groove.

The cable trench wall and the bottom plate at both ends of the two halves of the L-shaped trench body are respectively reserved with connecting grooves, and when the two adjacent sections of the U-shaped trench body are connected, a water-swellable waterproof strip is inserted.

The utility model has the following beneficial technical effects:

1) The setting of the prefabricated cable trench is in line with the development direction of the modular construction of smart substations. The cable trench unit components, cable brackets, and cover plates are prefabricated in the factory, which is conducive to improving the degree of factory processing, speeding up the construction progress, reducing on-site wet work, and reducing Manpower and material resources input, water saving, energy saving and green environmental protection;

2) Breaking the traditional "U"-shaped section design, adopting a two-piece splicing section design, which is convenient for transportation and on-site assembly; the two-piece unit component can reduce the weight of the hoisting unit, and the installation is more convenient and quick; it is easy to stack and make full use of the transportation space. It avoids the waste of transportation space and the increase of transportation cost caused by "U"-shaped components that cannot be stacked;

3) There is no need for secondary internal painting and slope finding work. Water-swellable waterproof strips are inserted at the joints of the ditch walls to make the vertical drainage of the ditch bottom smooth. The connection nodes between the side walls and the bottom plate are simple and waterproof.

Description of drawings

Fig. 1 is a schematic diagram of the cross-sectional structure of the cable trench described in the present invention.

Fig. 2 is a schematic view of the structure of half of the L-shaped groove in the utility model, viewed from the inside to the outside.

Fig. 3 is a schematic diagram of connection nodes of the ditch wall of the present invention.

Fig. 4 is a schematic diagram of connection nodes of the bottom plate of the present invention.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings: As shown in Figures 1 and 2, a reinforced concrete assembly type cable trench is composed of a section of U-shaped trench bodies connected by sections, and the U-shaped trench body consists of left and right The symmetrical two halves of the L-shaped ditch 1 are assembled. On the respective splicing edges 2 of the joints of the bottom plates, a plurality of steel bar connecting sleeves 3 are respectively inwardly reserved in the horizontal direction, and the two halves of the L-shaped ditch 1 When they are assembled together, short steel bars 4 for positioning and connection are inserted into the steel bar connection sleeves 3 corresponding to the two halves of the L-shaped grooves.

As shown in the figure, on the splicing sides 2 of the two halves of the L-shaped ditch body 1, there are horizontally arranged two rows up and down, and each row has a plurality of steel bar connecting sleeves 3; 2 The upper part is longitudinally provided with a 1/4 circular notch 5, and after the two halves of the L-shaped groove body 1 are assembled together, a 1/2 circular groove is formed and a vertical drainage groove is formed.

As shown in Figures 3 and 4, the cable trench wall 6 and the bottom plate 7 at both ends of the two halves of the L-shaped trench body 1 of the utility model are respectively reserved with connecting grooves 8, and in the adjacent two sections of the U-shaped trench. There is the waterproof strip 9 that expands when encountering water to snap into when body joins.

Embodiment: The utility model adopts a two-piece assembling scheme, which is symmetrical left and right. Its processing and manufacturing drawings are shown in Figures 1 and 2. The weight of a single piece is 0.6 tons. It can be stacked during transportation and installation, and occupies a small amount of transportation and storage space. , can transport 50 tons at a time, forming a 25m long ditch. Rebar connection sleeves are reserved on the bottom plate, and Φ14 short steel bars are inserted during installation for positioning and connection. A 4x40 groove is reserved on the wall of the cable trench and the bottom plate, and the water-swellable waterproof strip is inserted during installation to prevent water seepage at the connection. There is a 1/4 circle in the prefabricated ditch unit, and the two pieces are spliced to form a 1/2 circle with a radius of 50mm. The water level difference is used to achieve longitudinal drainage, and there is no need for secondary slope finding in fine stone concrete. Taking the 1.0m wide x 1.0 deep cable trench as an example, its modulus only needs to be 1.0m wide x 1.0 deep + 1.0m wide x 1.15 deep. The connection nodes between the trench wall and the bottom plate are shown in Figure 3. 4.

Detailed ways

The implementation steps of the cable trench of the utility model are: a) Factory prefabrication, including factory prefabrication of cable trench unit components, cable brackets and cover plates;

b) Positioning and setting out, and accurately positioning the foundation groove;

c) Earthwork excavation, during the excavation process, it is necessary to track and control the elevation of the bottom of the foundation trench, and precipitation is required when the groundwater level is high;

d) Cushion construction, C15 plain concrete cushion is laid immediately after foundation pit excavation, and drainage pipes are buried at the same time, and the cushion surface must be level;

e) Hoisting in place, the unit components of the cable trench are hoisted in place by a small crane, and the longitudinal and transverse direction errors are adjusted so that the surface of the trench wall is flush and the side of the longitudinal trench wall is flush; steel bars are reserved in the bottom plate of the prefabricated cable trench to connect the mechanical sleeve , Insert short steel bars during installation for positioning and connection;

f) Waterproof joints, when the ditch wall is spliced and installed, snap into the water-swelling waterproof strip to prevent water seepage at the joint; use the water level difference to achieve longitudinal drainage, and do not need to find a second slope in the fine stone concrete;

g) Fix the cable support, arrange the cable support according to the electrical professional requirements, and use internal expansion bolts to fix it; the laying cables are arranged in an orderly manner and fixed securely;

h) Pave the cover board, the surface level of the cover board shall be level and stable.

The utility model is suitable for substations, converter stations, power plants and other projects that require the arrangement of assembled cable trenches.

In this description, specific examples are used to illustrate the principle and implementation of the present utility model. The description of the above embodiments is only used to help understand the method and core idea of the present utility model; this part of the content should not be interpreted as the utility model limit.

Claims (3)

1. A reinforced concrete assembly type cable trench, which is composed of a section of U-shaped trench body connected, characterized in that the U-shaped trench body is assembled from two symmetrical L-shaped trench bodies, which are spliced on the bottom plate There are a plurality of inwardly set reinforcing bar connecting sleeves correspondingly reserved on the respective splicing edges of the corresponding horizontal positions, and when the two halves of the L-shaped groove body are assembled together, the corresponding reinforcing bar connecting sleeves of the two halves of the L-shaped groove body Inserts short bars for positioning and connection. 2. The reinforced concrete assembled cable trench according to claim 1, characterized in that two rows of upper and lower rows are horizontally arranged on the splicing edges of the two halves of the L-shaped trench body, and each row has a plurality of steel bar connection sleeves; A 1/4 circular notch is longitudinally arranged on the upper parts of the splicing sides of the two halves of the L-shaped grooves, and after the two halves of the L-shaped grooves are assembled together, a 1/2 circular groove is formed to form a longitudinal drainage groove. 3. The reinforced concrete prefabricated cable trench according to claim 1 or 2, characterized in that the cable trench wall and the bottom plate at both ends of the two halves of the L-shaped trench body are respectively reserved with connecting grooves, and When two adjacent sections of U-shaped grooves are connected, the waterproof strips that expand when encountering water are inserted.