CN210195814U

CN210195814U - Novel drainage ditch suitable for highway tunnel

Info

Publication number: CN210195814U
Application number: CN201920369210.6U
Authority: CN
Inventors: Jie Ma; 马杰; Qiang Bi; 毕强; Jingang Wu; 吴金刚; Mingkui Chen; 陈明奎
Original assignee: Beijing General Municipal Engineering Design and Research Institute Co Ltd
Current assignee: Beijing General Municipal Engineering Design and Research Institute Co Ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2020-03-27
Anticipated expiration: 2029-03-22

Abstract

The utility model discloses a novel escape canal suitable for highway tunnel. This novel escape canal mainly contains: plastic pipes or metal pipes with circular cross sections, which are mutually connected or welded in a hot melting way; the outside of the pipe is wrapped with plain concrete or a suitable number of reinforcing bars are arranged in the concrete around the pipe to increase the rigidity of the drain. The utility model provides an influence driving comfort and the problem of security that traditional prefabricated gutter apron unevenness and intensity were not enough to bring in the highway tunnel. The utility model discloses an utilize circular cross-section to have the performance of better bearing capacity to radial load, utilize fashioned circular tubular product as the escape canal ditch body, have simple to operate, the construction is convenient, reduce advantages such as engineering cost, application scope are wide.

Description

Novel drainage ditch suitable for highway tunnel

Technical Field

The utility model relates to a traffic facilities, concretely relates to escape canal in highway tunnel.

Background

The traditional drainage ditch in the highway tunnel is generally finished by concrete cast-in-place, and mainly comprises a drainage ditch side wall and a drainage ditch cover plate. The side wall of the drainage ditch adopts a cast-in-place reinforced concrete structure, the drainage ditch cover plate adopts a prefabricated reinforced concrete structure, the drainage ditch cover plate is prefabricated according to a section of 50cm, and a deformation joint is arranged on the side wall of the cast-in-place drainage ditch. The two sides of the tunnel are provided with sand sinking wells, a rainwater grate is arranged in the longitudinal direction (at certain intervals), and the sand sinking wells are arranged below the rainwater grates. The sewage on the tunnel pavement is firstly collected on the two sides of the road through the cross slope of the road and then enters the drainage side ditch from the rainwater grate along the longitudinal slope of the road. And finally, discharging the tunnel in the drainage ditch. The escape canal generally distributes in tunnel road surface both sides, and the vehicle often can roll the escape canal apron in the in-process of traveling, because the apron is prefabricated for the segmentation, and because reasons such as construction error, the general unevenness of escape canal apron influences the driving travelling comfort, and partial overweight vehicle may press the escape canal apron to break and cause the safety risk. Traditional escape canal can not guarantee the travelling comfort of driving in the tunnel under the prerequisite that satisfies the interior drainage requirement of tunnel, can guarantee driving safety's requirement again.

Disclosure of Invention

The utility model aims at providing a novel escape canal suitable for highway tunnel to solve the travelling comfort that traditional escape canal exists and the poor technical problem of security.

In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

the utility model provides a plain concrete that is suitable for highway tunnel's novel escape canal, the escape canal body adopts that the inner wall is smooth and the cross section is circular shape plastics or metal pipeline, and the pipeline outside parcel plays protection and restriction pipeline deformation effect.

And reinforcing steel bars for enhancing the rigidity of the drainage pipeline are arranged in the concrete at the periphery of the pipeline.

The plastic pipelines are connected by hot melting butt joint.

The metal pipes are connected by welding.

The utility model has the advantages that:

1. because the outside of the pipeline is wrapped by the concrete, the deformation of the pipeline is limited, and the like, under the load action of the vehicle on the vertical road surface, the side wall of the drainage pipeline is approximately radially and uniformly loaded, and the circular section has a good bearing effect on the radially and uniformly loaded load.

2. The inner wall of the drainage ditch is smooth, the water resistance is small, the installation is convenient, and the construction is convenient; can reduce the quantity of reinforcing bar in the escape canal structure effectively, reduce engineering cost.

3. The pipe with different circumferential line rigidity can be selected according to different requirements, and the application range is wide.

Drawings

Fig. 1 is the utility model discloses a drainage ditch structure and set up the schematic diagram of position.

Figure 2 is a transverse cross-sectional view of the drain of figure 1.

Figure 3 is a longitudinal cross-sectional view of the drain of figure 1.

Numbering in the figures: 101 is concrete which is encapsulated outside a drainage ditch pipeline; 102 is a drainage ditch pipeline (plastic pipe or steel pipe); 103 is an outer-encapsulated concrete reinforcing steel bar (which can be set or not set according to specific conditions); 104 is a cable trough cover plate; 105 for cable trough, 106 for plain concrete backfill, 107 for cable trough side walls, 108 for pavement structure, 109 for plain concrete backfill, and 110 for grouted rubble backfill.

Detailed Description

The following provides a clear and thorough description of the embodiments of the present invention, with reference to the accompanying drawings. Based on the utility model discloses an implement example, all other examples under the prerequisite of not making the creative work of ordinary skill in the art, all belong to the scope of protection of the utility model.

In the description of the embodiments of the present invention, it should be noted that the positional relationships indicated by "left side", "right side", "upper part", "lower part" and the like in relation to the indicated directions are based on the positional relationships shown in the drawings, and the arrangement position of the present invention is merely described for convenience, and a specific position is not indicated or suggested to have the device.

As shown in fig. 1, after the side wall of the cast-in-place cable trough on the left side of the drainage ditch has the required strength, the lower part and the right part of the drainage ditch are backfilled with the masonry stone and the plain concrete, and sufficient space is reserved for the drainage ditch by arranging a temporary baffle plate and the like in the backfilling process. After the grouted rubble and plain concrete to be backfilled have the required strength, concrete below the bottom of the drainage pipeline 102 in the outer-packaging concrete 101 is poured, the drainage pipeline 102 is laid before the concrete is initially set, and the outer-packaging concrete 101 is continuously poured. After the outer-encapsulated concrete pouring height exceeds a certain height of the top of the drainage ditch pipeline 102, it can be determined that the outer-encapsulated concrete reinforcing steel bars 103 can be configured according to specific road loads. And continuously pouring the outer-sealed concrete 101 until the elevation of the pavement structure at the upper part of the drainage ditch is lower than that of the upper part of the drainage ditch. And finally paving a pavement structure at the upper part of the drainage ditch.

Referring to fig. 2 and 3, appropriate reinforcing bars are provided in the encapsulated concrete to increase the load bearing capacity of the drain.

The above-mentioned embodiments of the present invention are merely exemplary embodiments, and are not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a novel escape canal suitable for highway tunnel, its characterized in that, the escape canal body adopts the smooth and cross section of inner wall to be circular shape plastics or metal pipeline, and the outside parcel of pipeline plays the plain concrete of protection and restriction pipeline deformation effect.

2. The utility model provides a novel escape canal suitable for highway tunnel of claim 1, characterized in that, dispose the reinforcing bar of reinforcing drainage pipe rigidity in the concrete of pipeline periphery.

3. The novel drainage ditch applicable to the highway tunnel according to claim 1, wherein the connection between the plastic pipes adopts hot melt butt joint.

4. The novel drainage ditch applicable to the highway tunnel according to claim 1, wherein the connection between the metal pipes is welded.