CN219886470U

CN219886470U - Anti-sedimentation soft soil roadbed structure

Info

Publication number: CN219886470U
Application number: CN202321385371.7U
Authority: CN
Inventors: 毛永强
Original assignee: CCCC Second Harbor Engineering Co
Current assignee: CCCC Second Harbor Engineering Co
Priority date: 2023-06-02
Filing date: 2023-06-02
Publication date: 2023-10-24
Anticipated expiration: 2033-06-02

Abstract

The utility model discloses an anti-sedimentation soft soil roadbed structure which comprises a roadbed body, wherein a subsidence area is arranged on the roadbed body, a first concrete pouring layer is arranged at the bottom of the subsidence area, a first gravel layer is arranged above the first concrete pouring layer, a second concrete pouring layer is arranged above the first gravel layer, a second gravel layer is arranged above the second concrete pouring layer, a third concrete pouring layer is arranged above the second gravel layer, a plurality of anti-sedimentation steel pipes are arranged at the bottom of the subsidence area, and a plurality of second anti-sedimentation steel pipes are arranged between two side surfaces of the subsidence area and two side surfaces of the second concrete pouring layer. The utility model is provided with the roadbed body, the subsidence area, the first concrete pouring layer, the first gravel layer, the second concrete pouring layer, the second gravel layer, the third concrete pouring layer, the first anti-sinking steel pipe and the second anti-sinking steel pipe, and the connection between the subsidence area anti-sinking structure and the normal roadbed body is enhanced, so that the anti-sinking performance of the soft soil roadbed is improved.

Description

Anti-sedimentation soft soil roadbed structure

Technical Field

The utility model relates to the technical field of soft soil roadbed, in particular to an anti-sedimentation soft soil roadbed structure.

Background

The soft soil roadbed refers to a common roadbed in a special area. Special design processing is required. Soft soil has the characteristics of large water content, poor permeability, low natural strength, high compressibility and the like. If the critical height is exceeded, the foundation is destabilized.

The traditional anti-sedimentation way adopted by the soft soil roadbed is generally to excavate the ground with high water content, then to cast concrete downwards to seal the top after the concrete pile is driven downwards, and the way can prevent sedimentation to a certain extent, but the whole way is not tightly connected with the normal roadbed, and the anti-sedimentation effect is poor, so that the anti-sedimentation soft soil roadbed structure is needed.

Disclosure of Invention

The utility model aims to provide an anti-sedimentation soft soil roadbed structure so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a prevent subsiding weak soil roadbed structure, includes the roadbed body, be provided with the district of collapsing on the roadbed body, the bottom in district of collapsing is provided with concrete placement layer one, just concrete placement layer one's top is provided with the rubble layer one, the top of rubble layer one is provided with concrete placement layer two, concrete placement layer two's top is provided with rubble layer two, the top of rubble layer two is provided with concrete placement layer three, the bottom in district of collapsing is provided with a plurality of and prevents sinking steel pipe one, just collapse the district both sides face with be provided with a plurality of between the both sides face of concrete placement layer two and prevent sinking steel pipe two.

Preferably, the diameter of broken stone in the first broken stone layer is set to be 30-50cm, and the diameter of broken stone in the second broken stone layer is set to be 5-20cm.

Preferably, the first concrete pouring layer, the second concrete pouring layer and the first concrete pouring layer are respectively provided with a reinforcing steel bar net rack.

Preferably, a plurality of front pushing blocks are arranged at one ends of the first anti-sinking steel pipe and the second anti-sinking steel pipe, and a plurality of grouting holes are formed in the surfaces of the first anti-sinking steel pipe and the second anti-sinking steel pipe.

Preferably, the first anti-sinking steel pipe is a seamless steel pipe with the diameter of 40cm, and the second anti-sinking steel pipe is a seamless steel pipe with the diameter of 25 cm.

Compared with the prior art, the utility model has the beneficial effects that: the utility model is provided with the roadbed body, the subsidence area, the first concrete pouring layer, the first gravel layer, the second concrete pouring layer, the second gravel layer, the third concrete pouring layer, the first anti-sinking steel pipe and the second anti-sinking steel pipe, and the connection between the subsidence area anti-sinking structure and the normal roadbed body is enhanced, so that the anti-sinking performance of the soft soil roadbed is improved.

Drawings

FIG. 1 is a schematic diagram of a cross-sectional front view of an anti-settling soft soil subgrade structure;

fig. 2 is a schematic diagram of an external structure of an anti-settling steel pipe II in an anti-settling soft soil roadbed structure.

In the figure: 1. a roadbed body; 2. a collapse zone; 3. a first concrete pouring layer; 4. a crushed stone layer I; 5. a second concrete pouring layer; 6. a stone layer II; 7. a third concrete pouring layer; 8. an anti-sinking steel pipe I; 9. anti-sinking steel pipe II; 10. grouting holes.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, the present utility model provides a technical solution: the anti-sedimentation soft soil roadbed structure comprises a roadbed body 1, wherein a subsidence area 2 is arranged on the roadbed body 1, a first concrete pouring layer 3 is arranged at the bottom of the subsidence area 2, a first gravel layer 4 is arranged above the first concrete pouring layer 3, a second concrete pouring layer 5 is arranged above the first gravel layer 4, a second gravel layer 6 is arranged above the second concrete pouring layer 5, a third concrete pouring layer 7 is arranged above the second gravel layer 6, a plurality of first anti-sedimentation steel pipes 8 are arranged at the bottom of the subsidence area 2, and a plurality of second anti-sedimentation steel pipes 9 are arranged between two side surfaces of the subsidence area 2 and two side surfaces of the second concrete pouring layer 5;

the diameter of broken stone in the first broken stone layer 4 is 30-50cm, and the diameter of broken stone in the second broken stone layer 6 is 5-20cm;

and the first concrete pouring layer 3, the second concrete pouring layer 5 and the first concrete pouring layer 3 are internally provided with reinforcing steel bar net racks, so that the overall strength is improved.

A plurality of front pushing blocks are arranged at one end of the first anti-sinking steel pipe 8 and one end of the second anti-sinking steel pipe 9, and a plurality of grouting holes 10 are arranged on the surfaces of the first anti-sinking steel pipe 8 and the second anti-sinking steel pipe 9, so that concrete can spread to the outside hardened soil through the grouting holes 10;

the anti-sinking steel pipe I8 is arranged as a seamless steel pipe with the diameter of 40cm, the thickness of the outer wall is 30mm, and the anti-sinking steel pipe II 9 is arranged as a seamless steel pipe with the diameter of 25cm, and the wall thickness is 20mm.

Working principle: after soft soil of the subsidence area 2 is excavated, holes are drilled in the ground at the bottom of the subsidence area 2, the diameters of the holes are 45cm, then an anti-sinking steel pipe I8 is pressed into holes formed in the bottom of the subsidence area 2 through an external machine, concrete is poured into the anti-sinking steel pipe I8 and the ground of the subsidence area 2 after the anti-sinking steel pipe I8 is paved, the concrete can spread outwards through grouting holes 10 on the surface of the anti-sinking steel pipe I8, surrounding soil is hardened, meanwhile, a concrete pouring layer I3 is formed on the bottom surface of the subsidence area 2, then large-diameter broken stone is paved to form a gravel layer I4, then an anti-sinking steel pipe II 9 is installed on the two inner side surfaces of the subsidence area 2 in the same mode that the anti-sinking steel pipe I8 is installed, then a concrete pouring layer II 5 is formed by pouring concrete on the upper side of the anti-sinking steel pipe II 9 and the gravel layer I4, one end of the anti-sinking steel pipe II 9 can harden the ground bottom soil outside the subsidence area 2, the concrete pouring layer II 5 and a normal roadbed body 1 can be firmly connected, and then a gravel layer II 6 and a concrete pouring layer 5 can be paved in sequence.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent subsiding weak soil roadbed structure, includes roadbed body (1), its characterized in that: be provided with subsidence area (2) on roadbed body (1), the bottom in subsidence area (2) is provided with concrete placement layer one (3), just the top of concrete placement layer one (3) is provided with gravel layer one (4), the top of gravel layer one (4) is provided with concrete placement layer two (5), the top of concrete placement layer two (5) is provided with gravel layer two (6), the top of gravel layer two (6) is provided with concrete placement layer three (7), the bottom in subsidence area (2) is provided with a plurality of anti-settling steel pipe one (8), just be provided with a plurality of anti-settling steel pipe two (9) between the both sides face of subsidence area (2) and the both sides face of concrete placement layer two (5).

2. The anti-settling soft soil subgrade structure as claimed in claim 1, wherein: the diameter of broken stone in the first broken stone layer (4) is set to be 30-50cm, and the diameter of broken stone in the second broken stone layer (6) is set to be 5-20cm.

3. The anti-settling soft soil subgrade structure as claimed in claim 1, wherein: and the first concrete pouring layer (3), the second concrete pouring layer (5) and the first concrete pouring layer (3) are internally provided with reinforcing steel bar net racks.

4. The anti-settling soft soil subgrade structure as claimed in claim 1, wherein: one end of the first anti-sinking steel pipe (8) and one end of the second anti-sinking steel pipe (9) are respectively provided with a plurality of front pushing blocks, and a plurality of grouting holes (10) are formed in the surfaces of the first anti-sinking steel pipe (8) and the second anti-sinking steel pipe (9).

5. The anti-settling soft soil subgrade structure as claimed in claim 1, wherein: the first anti-sinking steel pipe (8) is a seamless steel pipe with the diameter of 40cm, and the second anti-sinking steel pipe (9) is a seamless steel pipe with the diameter of 25 cm.