CN215715234U

CN215715234U - River bank foundation protection structure

Info

Publication number: CN215715234U
Application number: CN202122011000.XU
Authority: CN
Inventors: 邓祥雨; 杨显娥; 李瑞谨; 孙道蕊; 有东华
Original assignee: Yunnan Runjing Engineering Technology Group Co ltd
Current assignee: Yunnan Runjing Engineering Technology Group Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-02-01
Anticipated expiration: 2031-08-25

Abstract

The utility model relates to the technical field of river bank protection, in particular to a river bank foundation protection structure which comprises precast concrete tubular piles and cement mixing piles, wherein a plurality of precast concrete tubular piles are buried under a river bank and are arranged in a row to form an impermeable layer; a plurality of cement mixing piles are buried below the river bank and are arranged in a row to form a reinforcing layer, and the reinforcing layer is arranged on one side, far away from river water, of the anti-seepage layer; gravel layers are laid above the impermeable layer and the reinforcing layer, concrete protection feet are laid above the gravel layers, and the concrete protection feet are laid along the river bank. The method aims to reduce the damage of excavation of the foundation pit to the ecological environment by adopting a mode that the prestressed concrete pipe piles are buried in the river bank, thereby reducing the seepage-proofing requirement after excavation of the foundation pit.

Description

River bank foundation protection structure

Technical Field

The utility model belongs to the technical field of river bank protection, and particularly relates to a river bank foundation protection structure.

Background

At present, medium and small river governing engineering is being developed in a large number, the main governing scheme is newly-built river levee, newly-built bank protection, newly-built revetment, river levee reinforcement and the like, and governing engineering has many safety problems and quality problems in the implementation process, and the main problems include: the river bank is long, and the terrain conditions are changed greatly due to river channel evolution and the like; the geological conditions change greatly, and the foundation changes greatly in the construction process and the foundation treatment and foundation pit seepage prevention difficulty is high due to the long river channel and the small exploration section.

The bank protection foundation needs to be excavated below the riverbed, so that the scouring requirement is met, the foundation pit seepage prevention difficulty is high, the river channel is in a natural state, the water level fluctuation of the river channel is large, and the foundation treatment is not favorable. The river bank protection foundation can not meet the requirements of bank protection and bank protection engineering, the treatment of the bank protection foundation can meet the construction requirements, the requirements for reducing construction hidden dangers are met, and the requirements for meeting the flood control requirements of river channels and promoting the social and economic development are met. The existing main methods for treating the bank protection foundation comprise foundation excavation, block stone backfilling and the like, the foundation excavation cost is low, but a foundation pit is deep, the foundation pit is difficult to prevent seepage, temporary supporting is needed, the construction difficulty is high, water and soil loss is caused by foundation excavation, and the influence on the ecological environment is large; the stone block backfilling cost is high, a stone stock ground needs to be opened up, the construction difficulty is high, and the construction quality is difficult to guarantee.

Disclosure of Invention

The utility model provides a river bank foundation protection structure for solving the problem of river bank protection foundation treatment, mainly aiming at the problems of impermeability, ecological environment influence, safety, construction difficulty and short service life of the existing foundation treatment.

The technical scheme adopted by the utility model is as follows: a river bank foundation protection structure comprises precast concrete tubular piles and cement mixing piles, wherein a plurality of precast concrete tubular piles are buried under a river bank and are arranged in a row to form an impermeable layer; a plurality of cement mixing piles are buried below the river bank and are arranged in a row to form a reinforcing layer, and the reinforcing layer is arranged on one side, far away from river water, of the anti-seepage layer; gravel layers are laid above the impermeable layer and the reinforcing layer, concrete protection feet are laid above the gravel layers, and the concrete protection feet are laid along the river bank.

Preferably, a plurality of precast concrete pipe piles are arranged in a row to form a stabilizing layer, and the stabilizing layer is arranged between the impermeable layer and the stabilizing layer; the impermeable layer and the stable layer are connected by first steel bars.

Preferably, a second reinforcing steel bar is arranged in the impermeable layer, and the second reinforcing steel bar penetrates through the impermeable layer.

Preferably, the arrangement density of the reinforcing layer is thinner than that of the impermeable layer; the arrangement density of the stabilizing layer is thinner than that of the reinforcing layer.

Preferably, the distance between the precast concrete tubular piles in the impermeable layer is 0.3-0.5 m; the distance between the precast concrete pipe piles in the stabilizing layer is 1.5-2.5 m; the distance between the cement mixing piles in the reinforcing layer is 0.8-1 m.

Preferably, the distance between the barrier layer and the reinforcing layer and between the reinforcing layer and the stabilizing layer is 1-1.5 m.

The utility model has the advantages that: according to the utility model, the precast concrete pipe piles can be directly buried below the river bank through the precast concrete pipe piles, and the penetration of groundwater in the river bed into the foundation pit can be reduced through the arrangement of the pipe piles in a row; the mode that the tubular pile was buried underground is adopted, foundation excavation can be reduced to reduce the influence to river course quality of water, reduce the excavation and also make and abandon the sediment volume and reduce, corresponding sediment field area of abandoning diminishes, thereby guarantees to reduce the influence to ecological environment.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a plan view.

In the figure: 1-river bank; 2-a stabilizing layer; 3-an impermeable layer; 4-a reinforcing layer; 5-a crushed stone layer; 6-concrete foot protection; 7-a first rebar; 8-second steel bar.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1-2, a protective structure for a river bank foundation comprises a precast concrete pipe pile and a cement mixing pile, wherein the precast concrete pipe pile needs to be precast outside the field and is directly driven into soil below the river bank through machinery after being precast.

A plurality of precast concrete tubular piles are buried under a river bank 1, the precast concrete tubular piles are arranged in a row to form an impermeable layer 3, the impermeable layer 3 is close to the position of river water and can play a role in seepage prevention and scour prevention, the distance between the precast concrete tubular piles in the impermeable layer 3 is 0.3-0.5m, and the distance between the precast concrete tubular piles is preferably 0.5 m.

A plurality of cement mixing piles are buried below the river bank 1 and are arranged in a row to form a reinforcing layer 4, so that the foundation is reinforced, the reinforcing layer 4 is arranged on one side, away from river water, of the anti-seepage layer 3, the distance between the cement mixing piles in the reinforcing layer 4 is 0.8-1m, and the distance between the cement mixing piles is preferably 1m in the utility model; the gravel layer 5 is laid above the impermeable layer 3 and the reinforcing layer 4, the gravel layer 5 is used for balancing the stress of the reinforcing layer 4 and the impermeable layer 3, the concrete toe guard 6 is laid above the gravel layer 5, the concrete toe guard 6 is laid along the river bank 1, the concrete toe guard 6 prevents the collapse of the soil bank side slope caused by the damage of the scoured dike toe guard, and the shape of the concrete toe guard 6 can be set according to actual construction requirements.

A plurality of precast concrete pipe piles are arranged in a row to form a stable layer 2, and the reinforcing layer 4 is arranged between the impermeable layer 3 and the stable layer 2; the impermeable layer 3 and the stable layer 2 are connected by a first reinforcing steel bar 7. As shown in fig. 1, a stabilizing layer 2 is provided, and the stabilizing layer 2 is used for pulling the impermeable layer 3 of the front row to enhance the stability of the impermeable layer 3. The barrier layer 3 is connected with the firm barrier layer 2 by first reinforcing bar 7, and the barrier layer 3 is stabilized through first reinforcing bar 7, and first reinforcing bar 7 is buckled and is set up to guarantee the firm to barrier layer 3.

The further technical scheme is that a second steel bar 8 is arranged in the impermeable layer 3, and the second steel bar 8 penetrates through the impermeable layer 3. Be provided with the second reinforcing bar 8 that runs through in barrier layer 3, all precast concrete tubular piles in second reinforcing bar 8 in with barrier layer 3 link into an organic whole, and the connection of the first reinforcing bar 7 of rethread for barrier layer 3 is held to firm layer 2, supports and stabilizes barrier layer 3's whole.

As shown in fig. 2, the arrangement density of the reinforcing layer 4 is thinner than that of the impermeable layer 3; the arrangement density of the stabilizing layer 2 is thinner than that of the reinforcing layer 4. The distance between the precast concrete tubular piles in the stabilizing layer 2 is 1.5-2.5m, and the distance between the precast concrete tubular piles in the stabilizing layer 2 is preferably 2m in the utility model. During connection, the first reinforcing steel bars 7 penetrate through the reinforcing layer 4 after being bent, and the first reinforcing steel bars 7 penetrate between the two cement mixing piles in the reinforcing layer 4 and are separated from the cement mixing piles.

The distances between the impermeable layer 3 and the reinforcing layer 4 and between the reinforcing layer 4 and the stabilizing layer 2 are 1-1.5m, and preferably, in the utility model, the distances between the impermeable layer 3 and the reinforcing layer 4 and between the reinforcing layer 4 and the stabilizing layer 2 are equal and are all 1 m.

The specific working mode is as follows: a construction scheme is formulated according to the specific conditions of the river bank, the precast concrete pipe pile is manufactured according to the design requirements, and after the precast concrete pipe pile meets the construction requirements, the precast concrete pipe pile is conveyed to the site for construction; the precast concrete pipe pile and the cement mixing pile are embedded below the river bank in sequence according to the design point position to form an impermeable layer 3, a reinforcing layer 4 and a stabilizing layer 2, so that the impermeable layer 3 forms a stable impermeable and scour prevention layer to ensure the protection of the river bank foundation; and finally, paving a rubble layer 5 on the anti-seepage layer 3, the reinforcing layer 4 and the stabilizing layer 2, so that the anti-seepage layer 3, the reinforcing layer 4 and the stabilizing layer 2 are stressed uniformly.

This structure reduces basic excavation to reduce the influence to river course quality of water, reduce the excavation and also make and abandon the sediment volume and reduce, the corresponding sediment field area of abandoning diminishes, thereby guarantees to reduce ecological environment's influence.

The above-mentioned embodiments are preferred embodiments, it should be noted that the above-mentioned preferred embodiments should not be considered as limitations to the utility model, and the scope of protection of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the utility model, and these modifications and adaptations should be considered within the scope of the utility model.

Claims

1. The utility model provides a bank foundation protective structure, includes precast concrete tubular pile and cement mixing stake, its characterized in that: a plurality of precast concrete tubular piles are buried under the river bank (1) and are arranged in a row to form an impermeable layer (3); a plurality of cement mixing piles are buried below the river bank (1) and are arranged in a row to form a reinforcing layer (4), and the reinforcing layer (4) is arranged on one side, far away from river water, of the anti-seepage layer (3); gravel layer (5) are laid to barrier layer (3) and back up coat (4) top, concrete banket (6) are laid to gravel layer (5) top, concrete banket (6) are laid along river bank (1).

2. The riparian base protection structure according to claim 1, wherein: a plurality of precast concrete pipe piles are arranged in a row to form a stabilizing layer (2), and the reinforcing layer (4) is arranged between the impermeable layer (3) and the stabilizing layer (2); the impermeable layer (3) and the stabilizing layer (2) are connected by a first steel bar (7).

3. The riparian base protection structure according to claim 2, wherein: and a second reinforcing steel bar (8) is arranged in the impermeable layer (3), and the second reinforcing steel bar (8) penetrates through the impermeable layer (3).

4. The riparian base protection structure according to claim 3, wherein: the arrangement density of the reinforcing layer (4) is thinner than that of the impermeable layer (3); the arrangement density of the stabilizing layer (2) is thinner than that of the reinforcing layer (4).

5. The riparian base protection structure according to claim 4, wherein: the distance between the precast concrete pipe piles in the impermeable layer (3) is 0.3-0.5 m; the distance between the precast concrete pipe piles in the stabilizing layer (2) is 1.5-2.5 m; the distance between the cement stirring piles in the reinforcing layer (4) is 0.8-1 m.

6. The riparian base protection structure according to any one of claims 2 to 5, wherein: the distance between the impermeable layer (3) and the reinforcing layer (4) and the distance between the reinforcing layer (4) and the stabilizing layer (2) are 1-1.5 m.