CN214423406U

CN214423406U - A apron is contained for pipeline protection

Info

Publication number: CN214423406U
Application number: CN202022807524.5U
Authority: CN
Inventors: 王新泉
Original assignee: Zhejiang Shirun Jianchuang Technology Development Co Ltd
Current assignee: Zhejiang Shirun Jianchuang Technology Development Co Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-10-19
Anticipated expiration: 2030-11-27

Abstract

The utility model relates to a cover plate culvert for pipeline protection, which comprises backfilled original soil, a triangular truss, foam concrete, a mounting point, an isolation diaphragm wall, a pipeline, a geogrid, geotextile and a waterproof membrane; the isolation diaphragm wall is arranged on two sides of the pipeline, the mounting point is arranged at the top of the isolation diaphragm wall, the triangular truss stretches across the mounting point and is arranged on the isolation diaphragm wall, the foam concrete is arranged in the triangular truss, the geogrid, the geotextile and the impermeable membrane are sequentially arranged on the triangular truss filled with the foam concrete from bottom to top, and the backfilled original soil is arranged above the impermeable membrane. The utility model has the advantages that: compared with the prior art, the utility model has the advantages that the soil excavation amount and the filling amount are greatly reduced, the original state of the soil body around the pipeline is kept, and the technical advantages are obvious; the utility model discloses the triangular truss, the foam concrete that adopt can obviously alleviate the cover load on pipeline upper portion.

Description

A apron is contained for pipeline protection

Technical Field

The utility model relates to an apron is contained, in particular to an apron is contained for pipeline protection.

Background

With the continuous development of traffic bridges and urban construction, underground pipeline transportation networks are developed more and more. As pipeline lines are generally long, the pipeline spans provinces and even countries, and existing roads and various newly-built projects can be met frequently in the construction stage and the later operation process. How to avoid deformation and damage of underground crossing pipelines caused by embankment deformation caused by soil layer disturbance, load settlement and vehicle passing caused by newly-built engineering construction, the traditional pipeline protection method is to construct a reinforced concrete slab culvert. The current pipeline protection patent technology has: CN201410214006.9, CN201420255747.7, CN201220689049.9, CN201420174188.7, CN201710137205.8, cn201920753012.x, CN201620481911.5, and CN201420502966.0, however, these techniques still have many problems, such as: the volume of earth that needs to fill out when the construction apron culvert is big, and the excavation depth is dark, and the former soil body of serious disturbance brings the hidden danger for peripheral original building, and the reinforced concrete quantity is generally very big in these patents moreover, can lead to the apron culvert to be from great, and easy deformation, fracture, seepage or ponding are slowly eroded by easily under the effect of higher fill soil load also, can not fine play the effect of permanent protection pipeline circuit.

Therefore, it is very important to find a cover plate for protecting a pipeline with small construction disturbance, stable structure and good protection effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the deficiencies in the prior art and providing a cover plate culvert for pipeline protection.

The cover board culvert for pipeline protection comprises backfilled original soil, a triangular truss, foam concrete, a mounting point, an isolation diaphragm wall, a pipeline, a geogrid, geotextile and a waterproof membrane; the isolation diaphragm wall is arranged on two sides of the pipeline, the mounting point is arranged at the top of the isolation diaphragm wall, the triangular truss stretches across the mounting point and is arranged on the isolation diaphragm wall, the foam concrete is arranged in the triangular truss, the geogrid, the geotextile and the impermeable membrane are sequentially arranged on the triangular truss filled with the foam concrete from bottom to top, and the backfilled original soil is arranged above the impermeable membrane.

Preferably, the method comprises the following steps: the bottom of the isolation diaphragm wall is lower than the bottom of the pipeline by more than 2.5 times of the diameter of the pipeline, and the bottom of the isolation diaphragm wall is lower than the bottom of the pipeline by not less than 2.0 m; the top of the isolation ground connecting wall exceeds the top of the pipeline by 0.5 time of the diameter of the pipeline, and the top of the isolation ground connecting wall exceeds the top of the pipeline by not less than 0.5 m; the minimum distance between the side wall of the isolation diaphragm wall and the side wall of the adjacent side of the pipeline is not less than 2.5 times of the diameter of the pipeline, and the minimum distance between the side wall of the isolation diaphragm wall and the side wall of the adjacent side of the pipeline is not less than 2.0 m; the two-side protection length of the isolation diaphragm wall exceeds the length of the protected pipeline by more than 2.5 times of the diameter of the pipeline, and the two-side protection length of the isolation diaphragm wall exceeds the length of the protected pipeline by not less than 2.0 m.

Preferably, the method comprises the following steps: the backfilled original soil and the triangular truss are excavated soil parts, and the rest parts are original soil.

The utility model has the advantages that:

1. compared with the prior art, the utility model discloses a geotechnological excavation volume and fill volume have reduced greatly, have kept the original condition of the peripheral soil body of pipeline, and technical advantage is showing.

2. Compared with the prior art, the utility model discloses the triangular truss, the foam concrete that adopt not only can obviously alleviate the cover load on pipeline upper portion, still the cost is reduced, and economic advantage is obvious.

3. The utility model discloses the stress release hole that sets up is enclosed with the steel sheet pile, has not only played the effect of leading the wall, has still further reduced the construction disturbance of keeping apart ground even wall.

4. The utility model provides an isolation ground is wall even belongs to the continuous construction operation, and the wall body water proof that forms blocks water the effect better, and has set up the impervious film on the triangle truss, prevents that secret moisture from invading in the pipeline soil body all around.

Drawings

FIG. 1 is a schematic structural view of a slab culvert for pipeline protection;

FIG. 2 is a plan view of the stress relief holes and the driving positions of the steel sheet piles;

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 is a schematic view of the construction of the isolation diaphragm wall;

FIG. 5 is a schematic view of a triangular truss installation;

fig. 6 is a schematic view of the arrangement of the water impermeable membrane.

Fig. 7 is an enlarged view at a in fig. 6.

Description of reference numerals: 1-original ground line; 2-backfilling the original soil; 3-triangular truss; 4-foam concrete; 5-mounting point; 6-isolation diaphragm wall; 7-a pipeline; 8-original soil mass; 9-stress relief holes; 10-U-shaped steel sheet pile; 11-soil body to be excavated of the isolation diaphragm wall; 12-digging a soil body part; 13-a reinforcement cage; 14-geogrid; 15-geotextile; 16-impermeable Membrane.

Detailed Description

The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

The cover board culvert for pipeline protection comprises backfilled original soil 2, a triangular truss 3, foam concrete 4, a mounting point 5, an isolation diaphragm wall 6, a pipeline 7, an original soil body 8, a geogrid 14, a geotextile 15 and a waterproof membrane 16; the isolation diaphragm wall 6 is arranged on two sides of the pipeline 7, the mounting point 5 is arranged at the top of the isolation diaphragm wall 6, the triangular truss 3 stretches across the isolation diaphragm wall 6 through the mounting point 5, the foam concrete 4 is arranged in the triangular truss 3, the geogrid 14, the geotextile 15 and the impermeable membrane 16 are sequentially arranged on the triangular truss 3 filled with the foam concrete 4 from bottom to top, and the backfilled original soil 2 is arranged above the impermeable membrane 16.

The bottom of the isolation ground connecting wall 6 is 2.5 times of the diameter of the pipeline and is not less than 2.0m lower than the bottom of the pipeline 7; the top of the isolation ground connecting wall 6 exceeds the top of the pipeline 7 by 0.5 time of the diameter of the pipeline and is not less than 0.5 m; the minimum distance between the side wall of the isolation ground connecting wall 6 and the side wall of the adjacent side of the pipeline 7 is not less than 2.5 times of the diameter of the pipeline and is not less than 2.0 m; the protection length of the two sides of the isolation ground connecting wall 6 exceeds the pipeline diameter of 2.5 times of the length of the protected pipeline 7 and is not less than 2.0 m.

The backfilled original soil 2 and the triangular truss 3 are excavated soil parts 12, and original soil 8 is reserved on the rest parts.

The construction method of the slab culvert for pipeline protection comprises the following steps:

1) as shown in fig. 2 and 3, according to the pipeline 7, construction paying-off is carried out, the position of the isolation diaphragm wall 6 is determined, a stress release hole 9 is arranged in the middle of the isolation diaphragm wall 6, and the bottom of the stress release hole 9 and the bottom of the pipeline 7 are in the same depth;

2) as shown in fig. 2 and 3, U-shaped steel sheet piles 10 are driven at two sides of the pre-constructed isolation diaphragm wall 6, and the driving depth of the U-shaped steel sheet piles 10 is consistent with the bottom of the pipeline 7;

3) as shown in fig. 4, a hydraulic grab trenching machine is adopted to carry out excavation construction of the soil body 11 to be excavated of the isolation diaphragm wall among the U-shaped steel sheet piles 10, fast excavation trenching is carried out, a reinforcement cage 13 is hoisted and concrete is poured to form a wall;

4) as shown in fig. 5, after the construction of the isolation diaphragm wall 6 is completed, pulling up and recovering the U-shaped steel sheet pile 10, excavating and removing the excavated soil part 12 under the original site line 1, and temporarily stacking the excavated soil in a nearby safe area;

5) as shown in fig. 5, the triangular truss 3 is installed: the triangular trusses 3 are connected through purlines, integrity of the triangular trusses is enhanced, the triangular trusses 3 and the isolation diaphragm wall 6 are connected and anchored through mounting points 5, surfaces of the triangular trusses 3 are cleaned, and preservatives are coated on the surfaces of the triangular trusses 3 integrally;

6) as shown in fig. 6 and 7, foam concrete 4 is backfilled according to the cross sectional area of the triangular truss 3, and after maintenance is completed, geogrid 14, geotextile 15 and waterproof membrane 16 are sequentially arranged on the triangular truss 3 filled with the foam concrete 4;

7) finally, as shown in fig. 1, backfilling original soil 2 is further arranged above the triangular truss 3 provided with the geogrid 14, the geotextile 15 and the waterproof membrane 16 and tamped to the level of the original ground line 1.

Claims

1. The utility model provides a apron culvert for pipeline protection which characterized in that: the construction method comprises backfilling original soil (2), a triangular truss (3), foam concrete (4), a mounting point (5), an isolation diaphragm wall (6), a pipeline (7), a geogrid (14), a geotextile (15) and a waterproof membrane (16); keep apart even wall (6) and set up in pipeline (7) both sides, mounting point (5) set up and keep apart even wall (6) top, the triangle truss (3) span through mounting point (5) and set up on keeping apart even wall (6), foam concrete (4) set up in triangle truss (3), geogrid (14), geotextile (15) and impervious membrane (16) set gradually on filling up the triangle truss (3) of foam concrete (4) from supreme down, backfill original soil (2) set up in impervious membrane (16) top.

2. The pipe protection deck culvert of claim 1, wherein: the bottom of the isolation ground connecting wall (6) is lower than the bottom of the pipeline (7) by more than 2.5 times of the diameter of the pipeline, and the bottom of the isolation ground connecting wall (6) is not less than 2.0m lower than the bottom of the pipeline (7); the top of the isolation ground connecting wall (6) exceeds the top of the pipeline (7) by 0.5 times of the diameter of the pipeline, and the top of the isolation ground connecting wall (6) exceeds the top of the pipeline (7) by not less than 0.5 m; the minimum distance between the side wall of the isolation ground connecting wall (6) and the side wall of the adjacent side of the pipeline (7) is not less than 2.5 times of the diameter of the pipeline, and the minimum distance between the side wall of the isolation ground connecting wall (6) and the side wall of the adjacent side of the pipeline (7) is not less than 2.0 m; the protection lengths of the two sides of the isolation ground connecting wall (6) exceed the length of the protected pipeline (7) by more than 2.5 times of the diameter of the pipeline, and the protection lengths of the two sides of the isolation ground connecting wall (6) exceed the length of the protected pipeline (7) by not less than 2.0 m.

3. The pipe protection deck culvert of claim 1, wherein: the backfilled original soil (2) and the triangular truss (3) are excavated soil body parts (12), and the rest parts are original soil bodies (8).