An assembled cable trench crossing a road

Abstract

The utility model belongs to the technical field of electric power facility construction, provide a kind of assembled cable trench crossing road, including multiple mutually lapping box girder, first lapping block and first lapping groove are set to between adjacent box girder, and second lapping block and second lapping groove are connected by being respectively lapped with first lapping groove and first lapping block, do not need connecting seat and bolt etc., and straightening work is completed in the lapping process, need not separate straightening work before lapping, simplify the work complexity;At the same time, the bottom of every adjacent two box girder lapping place is provided with angle defect, so that a small amount of soil and other impurities pushed to connecting place in lapping process enter angle defect, avoid a small amount of soil and other impurities etc. Cause the problem that lapping connecting place appears gap, guarantee lapping stability and tightness.

Description

Technical Field

[0001] This utility model belongs to the field of power facility construction technology, specifically relating to a prefabricated cable trench that crosses roads. Background Technology

[0002] Cable trenches are commonly used structures in substations because they can accommodate a large number of cables, occupy little space, have flexible routing, and save on investment.

[0003] When constructing cable trenches across roads within pre-excavated trenches, significant construction difficulties arise. To reduce on-site workload, precast cable trenches were designed. However, current precast cable trench construction requires straightening (aligning adjacent box girders) before connecting them using connectors and bolts, making the connection process complex. Furthermore, during box girder movement, a certain amount of soil or other impurities accumulates at the bottom of the box girder connection points, resulting in large gaps between adjacent box girder connections. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a prefabricated cable trench for crossing roads. Adjacent box girders are connected via a first overlapping block and a first overlapping groove at their ends, and a second overlapping block and a second overlapping groove that overlap with the first overlapping groove and the first overlapping block, respectively. This eliminates the need for connecting seats and bolts, and the straightening process is completed during the overlapping process, eliminating the need for separate straightening before overlapping and simplifying the work. Furthermore, a notch is provided at the bottom of the overlapping joint between every two adjacent box girders, allowing any small amount of soil or other impurities pushed towards the joint during overlapping to enter the notch, preventing gaps at the overlapping joint caused by soil or other impurities and ensuring the stability and tightness of the overlap.

[0005] According to some embodiments, this utility model provides a prefabricated cable trench crossing a road, adopting the following technical solution:

[0006] A prefabricated cable trench crossing a road, comprising multiple overlapping box girders;

[0007] At least two box girders have a first lap block and a first lap groove at one end, and a second lap block and a second lap groove at the other end that overlap with the first lap groove and the first lap block respectively; a notch is provided at the bottom of the lap joint of each pair of adjacent box girders.

[0008] Furthermore, the box girder is equipped with multiple pipe fittings.

[0009] Furthermore, walls are installed at both ends of multiple box beams.

[0010] Furthermore, the wall has multiple circular holes, and the ends of multiple pipes are respectively placed in the corresponding circular holes.

[0011] Furthermore, the wall has multiple square holes, and the ends of multiple pipe fittings are respectively placed in the corresponding square holes.

[0012] Furthermore, an expansion joint is provided between the box girder and the wall.

[0013] Furthermore, a cushion layer is provided on the side of the wall away from the box girder, and cable trench walls are provided on both sides of the cushion layer, with a cover plate provided on the cable trench walls.

[0014] Furthermore, multiple box girders are located below the road surface; above the multiple box girders, ground surfaces are set at positions on both sides of the road surface.

[0015] Furthermore, the floor is a gravel floor.

[0016] Furthermore, the box girder is a precast concrete box girder.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This utility model includes multiple overlapping box girders. Adjacent box girders are connected by a first overlapping block and a first overlapping groove at their ends, and a second overlapping block and a second overlapping groove that overlap with the first overlapping groove and the first overlapping block, respectively. This eliminates the need for connecting seats and bolts, and the straightening work is completed during the overlapping process, eliminating the need for separate straightening work before overlapping, thus simplifying the work complexity. At the same time, a notch is provided at the bottom of the overlapping area between each pair of adjacent box girders, allowing a small amount of soil and other impurities pushed towards the connection point during the overlapping process to enter the notch, avoiding the problem of gaps at the overlapping connection caused by a small amount of soil and other impurities, and ensuring the stability and tightness of the overlapping. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0020] Figure 1 This is a schematic diagram of the cable trench structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the splicing structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the box girder structure of this utility model;

[0023] Figure 4 This is the utility model Figure 1 Schematic diagram of the cross section at point AA;

[0024] Figure 5 This is the utility model Figure 1 Schematic diagram of the cross section at point BB;

[0025] Figure 6 This is the utility model Figure 1 A cross-sectional schematic diagram of one embodiment at the CC position;

[0026] Figure 7 This is the utility model Figure 1 A cross-sectional schematic diagram of another embodiment at point CC;

[0027] Figure 8 This is the utility model Figure 1 Schematic diagram of the cross section at point DD;

[0028] Among them: 1. Subbase; 2. Pipe fittings; 3. Box girder; 301. First lap block; 302. First lap groove; 303. Second lap block; 304. Second lap groove; 305. Corner notch; 4. Floor; 5. Expansion joint; 6. Cover plate; 7. Wall; 8. Road surface; 9. Cable trench wall. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0031] Example 1:

[0032] like Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, this embodiment provides a prefabricated cable trench that crosses a road, including a base layer 1, pipe fittings 2, box beams 3, ground 4, expansion joints 5, cover plates 6, walls 7, and cable trench walls 9, etc.

[0033] like Figure 1 and Figure 5 As shown, the prefabricated cable trench in this embodiment is a cable trench that passes under the road surface 8; during construction, the trench can be pre-excavated on site to accommodate components such as the box girder 3.

[0034] like Figure 1 , Figure 5 and Figure 8As shown, a bedding layer 1 is installed in the pre-excavated trenches at both ends of the cable trench, and a cable trench wall 9 is installed on the bedding layer 1. A cover plate 6 can be installed on the cable trench wall 9. The bedding layer 1 and the cable trench wall 9 can be precast as a single piece of concrete or precast separately. The space formed by the bedding layer 1, the cable trench wall 9, and the cover plate 6 is used for cable construction and subsequent maintenance. The cover plate 6 can be a concrete cover plate, which prevents the entry of external impurities.

[0035] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the cable trench includes multiple overlapping box girders 3, which can be precast concrete box girders; at least two box girders 3 have a first overlapping block 301 and a first overlapping groove 302 at one end, and a second overlapping block 303 and a second overlapping groove 304 that overlap with the first overlapping groove 302 and the first overlapping block 301 respectively at the other end; a notch 305 is provided at the bottom of the overlap of each pair of adjacent box girders 3.

[0036] The first overlapping block 301 and the second overlapping groove 304 are adapted in shape and size, as are the first overlapping groove 302 and the second overlapping block 303. The matching of the overlapping blocks and grooves enables a quick and tight connection between two adjacent box girders 3. Specifically, the matching of the overlapping blocks and grooves eliminates the need for connecting seats and bolts, and straightening is completed during the overlapping process, eliminating the need for separate straightening before overlapping, thus simplifying the work. Simultaneously, a notch 305 is provided at the bottom of the overlapping joint between each pair of adjacent box girders, allowing a small amount of soil and other impurities pushed towards the joint during overlapping to enter the notch, preventing gaps at the overlapping joint caused by soil and other impurities, and ensuring the stability and tightness of the overlap.

[0037] like Figure 4 and Figure 5 As shown, multiple pipe fittings 2 are installed inside the box girder 3 for cable passage and protection; the pipe fittings 2 can be made of galvanized steel pipe. Walls 7 are respectively installed at both ends of the multiple box girder 3; as shown... Figure 7 In one embodiment, the wall 7 has multiple circular holes, and the ends of multiple pipe fittings 2 are respectively placed in the corresponding circular holes. The shape and size of the circular holes are adapted to the pipe fittings 2. The setting of the circular holes improves the stability of the pipe fittings 2.

[0038] like Figure 6In another embodiment, the wall 7 is provided with a plurality of square holes, and the ends of the plurality of pipe fittings 2 are respectively set in the corresponding square holes. The size of the square holes can be larger than the outer diameter of the pipe fittings 2. The square holes facilitate the insertion of the pipe fittings 2 and improve the construction flexibility.

[0039] like Figure 5 As shown, an expansion joint 5 is provided between the box girder 3 and the wall 7, that is, a certain gap is reserved between the box girder 3 and the wall 7; the expansion joint 5 allows the box girder 3 to move slightly when the foundation deforms, and avoids collision damage to the wall 7 when the box girder 3 moves slightly.

[0040] like Figure 5 As shown, multiple box girders 3 are located below the road surface 8; above the multiple box girders 3, a ground 4 is set at the position on both sides of the road surface 8; the ground 4 is a gravel ground, used to protect the box girders 3.

[0041] One of the construction processes or principles in this embodiment is as follows:

[0042] During road construction, after the concrete is poured to form the subbase 1, grooves are set in the subbase 1. Precast box girders 3 are then hoisted to the designated location and assembled into a whole. Following this, the road surface concrete is poured, and the ground slab 4 is constructed. For the cable trenches along the roadside, no bottom treatment is required; the trench is flush with the road surface. An earthen wall 7 (which can be cast integrally with the bottom subbase 1) is constructed on the side of the cable trench, with square or round holes for easy cable threading. Steel pipes 2 are neatly arranged within the box girders 3 for cable crossings through the road.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A prefabricated cable trench crossing a road, characterized in that, Including multiple box girders that overlap each other (3); At least two box girders (3) are provided with a first lap block (301) and a first lap groove (302) at one end, and a second lap block (303) and a second lap groove (304) at the other end, which respectively overlap with the first lap groove (302) and the first lap block (301); a notch (305) is provided at the bottom of the lap joint of each two adjacent box girders (3).

2. The prefabricated cable trench crossing a road as described in claim 1, characterized in that, The box girder (3) is equipped with multiple pipe fittings (2).

3. A prefabricated cable trench crossing a road as described in claim 2, characterized in that, Multiple box beams (3) have walls (7) at both ends.

4. A prefabricated cable trench crossing a road as described in claim 3, characterized in that, The wall (7) has multiple circular holes, and the ends of multiple pipe fittings (2) are respectively set in the corresponding circular holes.

5. A prefabricated cable trench crossing a road as described in claim 3, characterized in that, The wall (7) has multiple square holes, and the ends of multiple pipe fittings (2) are respectively set in the corresponding square holes.

6. A prefabricated cable trench crossing a road as described in claim 3, characterized in that, An expansion joint (5) is provided between the box girder (3) and the wall (7).

7. A prefabricated cable trench crossing a road as described in claim 3, characterized in that, A cushion layer (1) is provided on the side of the wall (7) away from the box beam (3), and cable trench walls (9) are provided on both sides of the cushion layer (1), with a cover plate (6) provided on the cable trench walls (9).

8. A prefabricated cable trench crossing a road as described in claim 1, characterized in that, Multiple box girders (3) are located below the road surface (8); above the multiple box girders (3), a ground surface (4) is set at the position on both sides of the road surface (8).

9. A prefabricated cable trench crossing a road as described in claim 8, characterized in that, The floor (4) is a gravel floor.

10. A prefabricated cable trench crossing a road as described in claim 1, characterized in that, The box girder (3) is a precast concrete box girder.

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