Road signal cable pipe trench

Abstract

The utility model provides a road signal cable pipe trench. The road signal cable pipe trench comprises a pipe trench base, a road structure layer and a roadway surface layer which are sequentially arranged from bottom to top, a road signal cable protection pipe is embedded in the pipe trench base, and a signal cable is arranged in the road signal cable protection pipe in a penetrating mode. The thickness of the road structure layer is larger than that of the pipe ditch subbase; the distance between the outer diameter bottom of the road signal cable protection pipe and the bottom of the road structure layer is larger than the distance between the outer diameter bottom of the road signal cable protection pipe and the bottom of the pipe ditch base. And the pipe ditch bottom base is paved by adopting an original pavement milling material. The cable pipe trench structure is simple and reasonable in structure and high in integrity, the stability of the cable pipe trench structure is improved, the current-carrying capacity of the cable can be improved, the laying requirement of the high-current-carrying-capacity cable is met, the maintainability of the cable pipe trench structure is improved, damage is reduced, the technology is simplified, original road surface milling materials are used for shaft bottom structure construction, and the construction cost is reduced. The emission of construction wastes is reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering construction, in particular to a road signal cable trench. Background Art

[0002] Cable trench is a common way to lay cables. Signal cables can be laid directly in the trench. Signal cables are relatively soft, so they can bend freely in the trench, making them easier to lay. When laying signal cables, you can choose a trench of appropriate size according to different needs, and keep the trench flat during laying.

[0003] Road signal cable trench is a cable trench specially designed for laying road signal cables. It can usually be divided into two types: prefabricated concrete trench and mechanical excavation trench. Since the trench can be deeply excavated, it can cope with larger laying sizes and deeper underground burial depths.

[0004] However, the existing cable trenches are all covered, and the covers must be opened when laying and repairing cables, which is cumbersome and inconvenient. It is also easy for dirt and water to accumulate in the trenches. During later use, it is easy to cause the trench structure to sink due to external pressure, and rainwater can enter the well body and cause damage.

[0005] In addition, the cover plate has poor pressure-bearing strength and cannot be used on the roadway. Moreover, the cable trench is too close to the ground, which reduces the current-carrying capacity of the cable and cannot meet the laying requirements for the safe operation of high-current-carrying cables and the effective transmission of electric energy. Utility Model Content

[0006] In view of this, the purpose of the utility model is to design a road signal cable trench, improve the stability of the cable trench structure, increase the current-carrying capacity of the cable, meet the laying requirements of high-current-carrying cables, enhance the maintainability of the cable trench structure, reduce the occurrence of damage, simplify the process, and use the original road milling material for the bottom shaft structure construction, so as to reduce the discharge of construction waste and reduce costs.

[0007] The utility model provides a road signal cable trench, comprising:

[0008] A trench base, a road structure layer, and a road surface layer are sequentially arranged from bottom to top; wherein a road signal cable protective tube is embedded inside the trench base, and a signal cable is passed through the road signal cable protective tube;

[0009] The thickness of the road structure layer is greater than the thickness of the trench base; the distance between the bottom of the outer diameter of the road signal cable protection tube and the bottom of the road structure layer is greater than the distance between the bottom of the outer diameter of the road signal cable protection tube and the bottom of the trench base;

[0010] The trench base is paved with original road surface milling material to support the road structure layer.

[0011] The original road milling material includes: asphalt gravel mixture scraped off the original damaged asphalt sand road surface with a milling machine; the original road milling material is used as the backfill material of the original road surface for use as a cushion foundation, which reduces the emission of construction waste, saves costs, reduces pollution, and protects the environment.

[0012] Furthermore, the road structure layer is paved with C25 concrete, which has high strength and durability and plays a role in reinforcing the overall structure of the road signal cable trench.

[0013] Furthermore, the road signal cable protective tube is a PE tube.

[0014] PE pipe has the following characteristics:

[0015] Good hygienic performance: No heavy metal salt stabilizer is added during the processing of PE pipes, the material is non-toxic, has no scaling layer, and does not breed bacteria.

[0016] Excellent corrosion resistance: except for a few strong oxidants, it can resist corrosion from a variety of chemical media; no electrochemical corrosion.

[0017] Long service life: Under rated temperature and pressure conditions, PE pipes can be safely used for more than 50 years.

[0018] Good impact resistance: PE pipes have good toughness and high impact resistance. Heavy objects can directly press over the pipes without causing them to rupture.

[0019] Reliable connection performance: The strength of the hot-melt or electric-melt joint of the PE pipe is higher than that of the pipe body, and the joint will not be disconnected due to soil movement or live load.

[0020] Good construction performance: the pipeline is light, the welding process is simple, the construction is convenient, and the overall project cost is low.

[0021] Furthermore, the distance between the bottom of the outer diameter of the road signal cable protective tube and the bottom of the trench base is 45-55 mm.

[0022] Furthermore, the distance between the bottom of the outer diameter of the road signal cable protective tube and the bottom of the road structure layer is 245-255 mm.

[0023] Furthermore, the distance between the outer diameter side portion of the road signal cable protective tube and the side edge of the trench base is 145-155 mm.

[0024] Furthermore, the number of the road signal cable protective tubes is two, and the radial spacing between the two road signal cable protective tubes is 20-25 mm.

[0025] The structural dimension design and material selection of the road signal cable trench of the utility model improve the overall structural strength and stability, and improve the maintainability of the trench through reasonable structural layout.

[0026] Furthermore, the road surface layer is made of concrete mortar, with rubber or polymer modified asphalt as a bonding material, and is paved into an open-graded anti-skid surface layer.

[0027] The road surface is in direct contact with vehicles, bearing the large vertical force, horizontal shear force and impact force of vehicle loads. It is also affected by precipitation erosion and temperature changes.

[0028] Furthermore, the thickness of the road surface layer is 12.7-25.4 mm.

[0029] Compared with the prior art, the utility model has the following beneficial effects on the culvert structure for reinforcing the roadbed bottom:

[0030] The utility model discloses a road signal cable trench structure is simple and reasonable, has strong integrity, improves the stability of the cable trench structure, can increase the current carrying capacity of the cable, meets the laying requirements of high current carrying capacity cable, improves the maintainability of the cable trench structure, reduces the occurrence of damage, simplifies the process, adopts the original road surface milling material for the shaft bottom structure construction, reduces the emission of construction waste, and reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0032] Figure 1 The figure is a cross-sectional schematic diagram of a road signal cable trench according to an embodiment of the utility model.

[0033] The symbols in the accompanying drawings are:

[0034] 1. Trench base, 2. Road structure layer, 3. Road surface layer, 4. Road signal cable protection pipe. DETAILED DESCRIPTION

[0035] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] In the description of the present invention, it should be noted that the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0039] The utility model embodiment provides a road signal cable trench, see Figure 1 As shown, including:

[0040] A trench base 1, a road structure layer 2, and a road surface layer 3 are sequentially arranged from bottom to top; wherein a road signal cable protective tube 4 is embedded inside the trench base 1, and a signal cable is passed through the road signal cable protective tube 4;

[0041] The thickness of the road structure layer 2 is greater than the thickness of the trench base 1; the distance between the bottom of the outer diameter of the road signal cable protective tube 4 and the bottom of the road structure layer 2 is greater than the distance between the bottom of the outer diameter of the road signal cable protective tube 4 and the bottom of the trench base 1;

[0042] The trench base 1 is paved with original road surface milling material to support the road structure layer.

[0043] The original road milling material includes: asphalt gravel mixture scraped off the original damaged asphalt sand road surface with a milling machine; the original road milling material is used as the backfill material of the original road surface for use as a cushion foundation, which reduces the emission of construction waste, saves costs, reduces pollution, and protects the environment.

[0044] The road structure layer 2 is paved with C25 concrete, which has high strength and durability and plays a role in reinforcing the overall structure of the road signal cable trench.

[0045] In this embodiment, the road signal cable protective tube 4 is a PE tube.

[0046] PE pipes have good hygienic properties: no heavy metal salt stabilizer is added during the processing of PE pipes, the material is non-toxic, there is no scaling layer, and no bacteria are bred. Excellent corrosion resistance: except for a few strong oxidants, it can resist the erosion of various chemical media; there is no electrochemical corrosion. Long service life: under rated temperature and pressure conditions, PE pipes can be safely used for more than 50 years. Good impact resistance: PE pipes have good toughness and high impact resistance. Heavy objects can directly press over the pipes without causing the pipes to rupture. Reliable connection performance: The strength of the hot-melt or electric-melt interface of PE pipes is higher than that of the pipe body, and the seams will not be disconnected due to soil movement or live load. Good construction performance: The pipes are light in weight, the welding process is simple, the construction is convenient, and the overall project cost is low.

[0047] The distance between the outer diameter bottom of the road signal cable protective tube 4 and the bottom of the trench base 1 is 50 mm.

[0048] The distance between the outer diameter bottom of the road signal cable protective tube 4 and the bottom of the road structure layer 2 is 250 mm.

[0049] The distance between the outer diameter side of the road signal cable protective tube 4 and the side edge of the trench base 1 is 150 mm.

[0050] There are two road signal cable protective tubes 4 , and the radial distance between the two road signal cable protective tubes 4 is 20 mm.

[0051] The road surface layer 3 is made of concrete mortar, with rubber or polymer modified asphalt as a binder, and is paved into an open-graded anti-skid surface layer.

[0052] In this embodiment, the thickness of the road surface layer 3 is 25.4 mm.

[0053] The road surface layer 3 is in direct contact with the vehicles on the road, and is subjected to the vertical force, horizontal shear force and impact force of the large vehicle load, and is also affected by the erosion of precipitation and the change of temperature.

[0054] The road signal cable trench structure provided by the embodiment of the utility model is simple and reasonable, with strong integrity, which improves the stability of the cable trench structure, can increase the current carrying capacity of the cable, meet the laying requirements of high current carrying cables, improve the maintainability of the cable trench structure, reduce the occurrence of damage, and simplify the process. The original road surface milling material is used for the construction of the shaft bottom structure, which reduces the discharge of construction waste and reduces the cost.

[0055] So far, the technical solution of the utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without departing from the principle of the utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the utility model.

[0056] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A road signal cable trench, characterized in that: include: A trench base, a road structure layer, and a road surface layer are sequentially arranged from bottom to top; wherein a road signal cable protective tube is embedded inside the trench base, and a signal cable is passed through the road signal cable protective tube; The thickness of the road structure layer is greater than the thickness of the trench base; the distance between the bottom of the outer diameter of the road signal cable protection tube and the bottom of the road structure layer is greater than the distance between the bottom of the outer diameter of the road signal cable protection tube and the bottom of the trench base; The trench base is paved with original road surface milling material.

2. The road signal cable trench according to claim 1, characterized in that: The road structure layer is paved with C25 concrete.

3. The road signal cable trench according to claim 1, characterized in that: The road signal cable protective tube adopts a PE tube.

4. The road signal cable trench according to claim 1, characterized in that: The distance between the outer diameter bottom of the road signal cable protective tube and the bottom of the trench base is 45-55 mm.

5. The road signal cable trench according to claim 1, characterized in that: The distance between the bottom of the outer diameter of the road signal cable protective tube and the bottom of the road structure layer is 245-255 mm.

6. The road signal cable trench according to claim 1, characterized in that: The distance between the outer diameter side portion of the road signal cable protective tube and the side edge of the trench base is 145-155 mm.

7. The road signal cable trench according to claim 1, characterized in that: The number of the road signal cable protective tubes is two, and the radial spacing between the two road signal cable protective tubes is 20-25 mm.

8. The road signal cable trench according to claim 1, characterized in that: The road surface layer adopts concrete mortar, and uses rubber or polymer modified asphalt as a bonding material to pave an open-graded anti-skid surface layer.

9. The road signal cable trench according to claim 8, characterized in that: The thickness of the road surface layer is 12.7-25.4 mm.

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