CN212104177U

CN212104177U - Underground cable tunnel

Info

Publication number: CN212104177U
Application number: CN201922383895.2U
Authority: CN
Inventors: 范伟; 肖二虎; 谢德利; 谢肖峰; 张洋
Original assignee: China Second Metallurgy Group Co Ltd
Current assignee: China Second Metallurgy Group Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-12-08
Anticipated expiration: 2029-12-26

Abstract

The utility model provides an underground cable tunnel, this underground cable tunnel includes: a plurality of concrete sections which are sequentially butted and linearly arranged; a water-swelling waterproof rod is embedded between two adjacent sections of concrete sections, and a plurality of waterproof layers are arranged at the joint of the two adjacent sections of concrete sections along the periphery of the concrete sections; the two adjacent concrete sections are connected through a connecting plate, so that rigid connection between the two adjacent concrete sections is realized. The utility model discloses a meet water inflation waterproof rod and reserve sufficient waterproof layer deformation adaptation space in seam crossing in advance when the construction, when the structure warp or subside, meet water inflation waterproof rod and warp and give the flexible space of coiled material, can play fine adaptation and guard action to the meeting water inflation waterproof rod of seam crossing to avoided the structure to warp and lead to the waterproof layer to draw the problem of splitting, making waterproof inefficacy.

Description

Underground cable tunnel

Technical Field

The utility model relates to a cable tunnel technical field particularly, relates to an underground cable tunnel.

Background

The comprehensive cable tunnel is an underground pipeline corridor, namely a tunnel space is built underground in a city, various engineering pipelines such as electric power, communication, gas, heat supply, water supply and drainage and the like are integrated, unified planning, unified design, unified construction and management are implemented, city operation is guaranteed, the underground tunnel can be generally divided into a cast-in-place cable tunnel and a prefabricated cable tunnel and generally made of reinforced concrete, and the cable tunnel is easy to seep water and leak water due to the characteristics of leakage, cracking and the like of the concrete, so that the normal use of the cable tunnel is influenced.

The most ideal waterproof measures of the existing underground integrated cable tunnel are a water stop steel plate and a water stop belt, namely, a waterproof layer is arranged on the upstream face of the structure, so that the structure is prevented from being corroded by water, and the durability and the safety of the structure are guaranteed. In order to prevent the building structure from swelling and shrinking deformation caused by temperature and humidity changes, and prevent vibration, settlement and the like, the deformation joint is arranged, the cable tunnel is also provided with a corresponding deformation joint, in the prior art, a waterproof coiled material and a waterproof reinforcing layer are usually paved on a concrete cushion layer at the bottom of the deformation joint, and the waterproof coiled material at the deformation joint position of the cable tunnel is cracked due to uneven settlement of structures at two ends of the deformation joint of the cable tunnel, so that a waterproof layer of the coiled material is damaged, and the waterproof failure is caused.

Disclosure of Invention

In view of this, the utility model provides an underground cable tunnel aims at solving the waterproof layer easy fracture of current cable tunnel and leads to the problem of waterproof inefficacy.

The utility model provides an underground cable tunnel, this underground cable tunnel includes: a plurality of concrete sections which are sequentially butted and linearly arranged; a water-swelling waterproof rod is embedded between two adjacent sections of concrete sections, and a plurality of waterproof layers are arranged at the joint of the two adjacent sections of concrete sections along the periphery of the concrete sections; the two adjacent concrete sections are connected through a connecting plate, so that rigid connection between the two adjacent concrete sections is realized.

Further, according to the underground cable tunnel, the butt joint end face of the concrete section is provided with a groove for clamping the water-swelling waterproof rod.

Further, in the underground cable tunnel, the longitudinal section of the groove is of a semicircular structure.

Further, in the underground cable tunnel, the diameter of the groove is greater than or equal to the width of a joint between two adjacent concrete sections.

Further, in the underground cable tunnel, the groove is formed in the middle of the concrete section in the thickness direction.

Further, in the underground cable tunnel, a protection reinforcing layer is arranged on the periphery of the waterproof layer on the outermost layer.

Further, in the underground cable tunnel, the protection reinforcing layer is an anti-corrosion layer.

Further, in the underground cable tunnel, the water-swelling waterproof rod is of an elastic rod-shaped structure.

Further, in the underground cable tunnel, the water-swelling waterproof rod is an elastic foam rod.

Further, in the underground cable tunnel, the water-swelling waterproof rod is arranged along the whole circumference of the concrete section.

The utility model provides an underground cable tunnel, through the waterproof stick of water-swelling that sets up between the waterproof layer of a plurality of layers that set up in the seam crossing of concrete section and two sections concrete sections, can reserve sufficient waterproof layer deformation adaptation space in advance in the seam crossing during construction, when the structure warp or subsides, water-swelling waterproof stick warp and gives the flexible space of coiled material, can play fine adaptation and guard action to the waterproof stick of water-swelling in seam crossing, thereby avoided the structural deformation to lead to the waterproof layer to split, made the problem of waterproof inefficacy; rigid connection between two sections of concrete sections is realized through the connecting plate to reduce the dragging of concrete section to the waterproof layer, and then avoid the fracture and the waterproof inefficacy of waterproof layer. The underground cable tunnel is simple in structure, can be made of local materials, and has wide market prospect.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural diagram of an underground cable tunnel according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of an underground cable tunnel according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a concrete segment according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 to 2, preferred structures of the underground cable tunnel provided by the embodiment of the present invention are shown. As shown, the underground cable tunnel includes: a plurality of sections of concrete sections 1; wherein the content of the first and second substances,

the concrete sections 1 are sequentially butted and linearly arranged. Specifically, for the construction of underground cable tunnel prevents simultaneously that mutual interference between each section concrete section 1 from causing structural damage, underground cable tunnel divide into many sections concrete section 1 for carry out pouring and prefabricating of each section concrete section 1 in proper order, dock in proper order in each section concrete section 1, and form the underground cable tunnel that is the linear arrangement, form seam 11 between the concrete section 1 of pouring earlier, later as movement joint or construction joint. The length of each concrete segment 1 can be determined according to actual conditions, for example, according to geological conditions, structural characteristics and the like due to design requirements or construction requirements. The cross section of each concrete section 1 is of a square annular structure so as to facilitate construction or cable placement and the like through an inner hole; the cross section is a section perpendicular to the length direction of the concrete segment 1, and as shown in fig. 2, the longitudinal section is a section along the length direction of the concrete segment 1.

And a water-swelling waterproof rod 2 is embedded between the two adjacent concrete sections 1. Specifically, for outside water to permeate into concrete section 1 from seam 11, meet water inflation waterproof rod 2 can set up and inlay the seam 11 department of establishing between two sections concrete section 1 along concrete section 1 circumference. Wherein, for the inlaying of realizing meeting water inflation waterproof rod 2 establishes, preferably, be equipped with recess 12 on the butt joint terminal surface of concrete section 1 for the card is established meet water inflation waterproof rod 2, butt joint section is two relative butt joint sections of adjacent two sections concrete section 1. The longitudinal section of the groove 12 is of a semicircular structure, so that two sections of concrete sections 1 are buckled and enclose a coherent through groove structure after being butted, and the water-swelling waterproof rod 2 is clamped in the channel; the water-swelling waterproof rod 2 is matched with the groove 12, so that the outer wall of the water-swelling waterproof rod 2 is in contact connection with the inner wall of the groove 12; the diameter of the groove 12 can be larger than or equal to the width of the joint 11 between two adjacent concrete sections, so that the water can be prevented by the water-swelling waterproof rod 2 embedded in the groove 12; to improve the stability of the water-swellable waterproof rod 2, it is preferable that the water-swellable waterproof rod 2 and the groove 12 are provided at an intermediate position in the thickness direction of the concrete section 1 to avoid the exposure of the water-swellable waterproof rod 2. An isolation layer such as isolation paper may be provided on the outer wall of the water-swellable waterproof rod 2 to isolate the water-swellable waterproof rod 2 from the concrete section 1. Preferably, the water-swellable waterproof rod 2 and the groove 12 are provided along the entire circumference of the concrete segment 1 to further improve the waterproofness thereof.

The joint 11 of the two adjacent sections of the concrete sections 1 is provided with a plurality of waterproof layers 3 along the periphery of the concrete sections 1 for waterproofing so as to avoid water seepage and water leakage to the concrete sections 1 to influence the normal use of the cable tunnel. In specific implementation, the waterproof layer 3 may be a single layer or multiple layers sequentially wound from the outer wall of the concrete section 1 to the outer periphery of the concrete section 1, which is not limited in this embodiment. Preferably, the waterproof layer 3 may be provided along the entire circumference of the outer circumference of the concrete section 1 to further improve the waterproof property thereof. The waterproof layers 3 can be waterproof rolls which are sequentially adhered to the joints 11 of the concrete sections 1 and can be sequentially laid on the concrete layers by adopting a dry-laying process, the outermost waterproof layer 3 is a waterproof roll with a single-sided adhesive structure, and each layer of waterproof layer 3 arranged on the inner layer is a waterproof roll with a double-sided adhesive structure, so that the adhering effect between the two layers is completed by utilizing the double-sided adhesive property, and the cost of the roll is further saved.

The two adjacent concrete sections 1 are connected through a connecting plate 4, so that the rigid connection between the two adjacent concrete sections 1 is realized. Specifically, the two ends of the connecting plate 4 are fixed on the two concrete sections 1 through connecting pieces such as bolts respectively to reduce the pulling of the concrete sections 1 on the waterproof layer 3, and further avoid the fracture and the waterproof failure of the waterproof layer 3.

The periphery of the waterproof layer 3 at the outermost layer can be provided with an anti-corrosion layer (not shown in the figure) for preventing the waterproof layer 3 from being corroded, so that the service life of the waterproof layer 3 is prolonged, and the waterproof effect of the underground cable tunnel is improved. Of course, the anti-corrosion layer may be another protection reinforcing layer to reinforce and protect the waterproof layer 3.

In this embodiment, meet water inflation waterproof rod 2 can be elastic rod-shaped structure to reserve sufficient waterproof layer 3's flexible space of deformation in seam 11 department in advance, and the effect of cooperation enhancement layer and/or anti-corrosion coating, waterproof layer 3 that corresponds to seam 11 department can play fine adaptation and guard action, thereby avoided the structural deformation to lead to waterproof layer 3 to pull apart, make waterproof inefficacy's problem. The resilient bar structure may be a resilient foam bar, such as a polystyrene foam bar, among others.

The processing method of the underground cable tunnel comprises the following steps: firstly, when a concrete section 1 is poured, a semicircular groove 12 is formed in the butt joint end face, namely the position opposite to the designed position of a deformation joint and a construction joint, a polystyrene foam rod is laid in the groove to serve as a water-swelling waterproof rod 2, and the joint position is waterproof; then, pouring another section of concrete section 1 on one side of the concrete section 1, embedding a water-swelling waterproof rod 2 between the two sections of concrete sections 1, pasting a plurality of layers of waterproof coiled materials around the circumference of the concrete section 1 at the joint 11 of the two sections of concrete sections 1 to serve as a waterproof layer 3, and arranging a protection reinforcing layer outside the waterproof coiled material on the outermost side to reinforce and protect the waterproof layer 3; and finally, taking the fixed bottom plate as a connecting piece outside the protective reinforced layer or the outermost waterproof roll as the connecting piece, and respectively connecting the fixed bottom plate with the two sections of concrete sections 1 to realize rigid connection between the two sections of concrete sections 1.

In summary, in the underground cable tunnel provided by this embodiment, through the plurality of waterproof layers 3 arranged at the joints 11 of the concrete sections 1 and the water-swelling waterproof rods 2 arranged between the two sections of concrete sections 1, enough waterproof layer 3 deformation adaptive space can be reserved at the joints 11 in advance during construction, when the structure deforms or settles, the water-swelling waterproof rods 2 deform to give the coiled material a telescopic space, and the water-swelling waterproof rods 2 at the joints 11 can be well adapted and protected, so that the problems that the waterproof layers 3 are pulled apart and the waterproof layer fails due to structural deformation are avoided; realize the rigid connection between two sections concrete section 1 through connecting plate 4 to reduce dragging of concrete section 1 to waterproof layer 3, and then avoid waterproof layer 3's fracture and waterproof inefficacy. The underground cable tunnel is simple in structure, can be made of local materials, and has wide market prospect.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An underground cable tunnel, comprising: a plurality of concrete sections (1) which are sequentially butted and linearly arranged; wherein the content of the first and second substances,

a water-swelling waterproof rod (2) is embedded between two adjacent sections of the concrete sections (1), and a plurality of waterproof layers (3) are arranged at the joint (11) of the two adjacent sections of the concrete sections (1) along the periphery of the concrete sections (1);

the two adjacent concrete sections (1) are connected through a connecting plate (4) to realize rigid connection between the two adjacent concrete sections (1).

2. An underground cable tunnel according to claim 1,

and a groove (12) is arranged on the butt joint end face of the concrete section (1) and used for clamping the water-swelling waterproof rod (2).

3. An underground cable tunnel according to claim 2, characterized in that the longitudinal section of the groove (12) is of a semi-circular configuration.

4. An underground cable tunnel according to claim 2, characterized in that the diameter of the groove (12) is greater than or equal to the width of the joint (11) between two adjacent sections of the concrete section (1).

5. An underground cable tunnel according to claim 2, characterized in that the groove (12) is provided in the middle of the concrete section (1) in the thickness direction.

6. An underground cable tunnel according to any one of claims 1 to 5, wherein the outer periphery of the waterproof layer (3) at the outermost layer is provided with a protective reinforcing layer.

7. An underground cable tunnel according to claim 6, wherein the protective reinforcing layer is a corrosion protection layer.

8. An underground cable tunnel according to any one of claims 1 to 5, characterized in that the water-swellable water-proof rod (2) is of an elastic rod-like structure.

9. Underground cable tunnel according to claim 8, characterized in that the water-swellable water-proof rod (2) is a resilient foam rod.

10. Underground cable tunnel according to any one of claims 1 to 5, characterized in that the water-swellable water-proof rod (2) is arranged along the entire circumference of the concrete section (1).