CN211645809U - A bridge platform back foam lightweight soil roadbed structure - Google Patents

Abstract

The utility model relates to a bridge platform back foam light soil roadbed structure, which belongs to the technical field of road bridges. It includes: a foundation pit, and asphalt oil arranged on the surface of the foundation pit, the reinforcement piles in a linear arrangement are interspersed in the foundation pit, the surface of the foundation pit is provided with concrete, and the surface of the concrete is provided with Asphalt oil, the surface of the asphalt oil is provided with a pebble cushion, the surface of the pebble cushion is provided with foam light soil, the surface of the foam light soil is provided with an asphalt surface layer, adjacent to the reinforcement piles. A connection component for improving the connection strength of the reinforcement pile is arranged between them. The utility model can reinforce the foundation pit through the reinforcement piles provided, thereby increasing the ability of the foundation pit to bear stress, so that the foundation pit can withstand greater stress, thereby reducing the possibility of settlement of the foundation pit .

Description

A bridge platform back foam lightweight soil roadbed structure

technical field

The utility model relates to the technical field of roads and bridges, in particular to a bridge platform back foam lightweight soil roadbed structure.

Background technique

The bridge platform is a building that supports the bridge superstructure and is connected to the embankment. Its function is not only to transmit the load of the bridge upper structure to the foundation, but also to resist the filling pressure behind the platform, stabilize the bridgehead subgrade, and make the bridgehead line and the bridge. The role of the line to connect reliably and smoothly. The bridge platform is mostly set on the surface of the roadbed, so the foam light soil roadbed structure on the back of the bridge platform is often used.

In the prior art, the foam light soil subgrade structure on the back of the bridge platform includes: a foundation pit, and asphalt oil arranged on the surface of the foundation, a pebble cushion is arranged on the surface of the asphalt oil, and a pebble cushion is arranged on the top of the pebble cushion. Foamed lightweight soil is provided with an asphalt surface layer on the surface of the foamed lightweight soil.

The above-mentioned existing technical solutions have the following defects: the foundation of the section where the bridge is built often has the characteristics of relatively large pores and high water content, so it is often found that if the stress of the foundation pit is too large, it will cause the foundation pit to settle. Therefore, further improvement is required.

Utility model content

Aiming at the deficiencies of the prior art, one of the purposes of the present invention is to provide a bridge platform back foam lightweight soil roadbed structure, which can reinforce the foundation pit, increase the stress of the foundation, and reduce the possibility of foundation settlement.

The above-mentioned utility model purpose of the present utility model is achieved through the following technical solutions:

A foam light soil roadbed structure on the back of a bridge platform, comprising: a foundation pit, and asphalt oil arranged on the surface of the foundation pit, the reinforcement piles in a linear arrangement are interspersed in the foundation pit, and the The surface is provided with concrete, the surface of the concrete is provided with asphalt oil, the surface of the asphalt oil is provided with a pebble cushion, the surface of the pebble cushion is provided with foam light soil, the surface of the foam light soil is provided with There is an asphalt surface layer, and connecting components for improving the connection strength of the reinforcing piles are arranged between the adjacent reinforcing piles.

By adopting the above technical solution and setting up reinforcement piles, the foundation pit can be reinforced, thereby increasing the ability of the foundation pit to bear stress, enabling the foundation pit to withstand greater stress, thereby reducing the possibility of settlement of the foundation pit In addition, the setting of connection components can increase the connection strength between adjacent reinforcement piles, and further reduce the possibility of settlement of the foundation pit.

In a preferred example of the present invention, it can be further configured as follows: the connecting component includes: a steel plate installed between the reinforcement piles, a positioning hole opened on the reinforcement pile, a hole opened on the steel plate, and The through hole corresponding to the positioning hole is inserted through the positioning hole and the reinforcing rib in the through hole.

By adopting the above technical scheme, the reinforcing piles are inserted into the reinforcing ribs and the steel plates, so that the adjacent reinforcing piles can be connected together, so that the connection strength between the adjacent reinforcing piles can be increased, and the occurrence of foundation pits can be effectively reduced. Possibility of subsidence.

In a preferred example of the present invention, it can be further configured as follows: the foamed lightweight soil is divided into an upper layer of foamed lightweight soil and a lower layer of foamed lightweight soil, and the surface of the upper layer of foamed lightweight soil is provided with a surface for enhancing the foamed lightweight soil. Geotextiles for soil surface deformation resistance and tensile strength.

By adopting the above technical scheme, the geotextile is arranged, so that the deformation resistance and tensile strength of the foam light soil surface can be enhanced, and the load capacity of the foam light soil surface can be improved.

In a preferred example of the present invention, it can be further configured that: between the pebble cushion and the foam light soil, a steel mesh sheet for strengthening the connection between the pebble cushion and the foam light soil is arranged.

By adopting the above-mentioned technical scheme and setting up the steel mesh, the connection between the pebble cushion and the foam light soil can be strengthened, thereby improving the load capacity of the foam light soil surface.

In a preferred example of the present invention, it can be further configured that: a cushion layer for reducing the uneven force of the foundation pit is arranged between the foundation pit and the concrete.

By adopting the above technical solution and setting up a cushion layer, the influence of uneven force on the foundation pit can be reduced, thereby reducing the possibility of settlement of the foundation pit.

In a preferred example of the present invention, the steel plate can be further configured as follows: a side of the steel plate close to the foundation pit is welded with steel bars, and the end of the steel bars away from the steel plate is embedded in the reinforcement pile.

By adopting the above-mentioned technical solution and providing reinforcement, the connection between adjacent reinforcing columns can be increased, and the connection strength between adjacent reinforcing columns can be improved.

In a preferred example of the present invention, it can be further configured that: the foam lightweight soil is provided with linearly arranged deformation seams.

By adopting the above technical solution, the deformation joints are arranged, so that there are certain gaps in the foam lightweight soil at intervals, thereby allowing the foam lightweight soil subgrade to undergo a little shrinkage, expansion and uneven settlement.

In a preferred example of the present invention, it can be further configured that: the width of the deformation seam is 2cm.

By adopting the above technical scheme, the seam width is set to 2cm, so that the deformation seam can reach the best working state.

To sum up, the present utility model includes at least one of the following beneficial technical effects:

1. Setting reinforcement piles can reinforce the foundation pit, thereby increasing the ability of the foundation pit to withstand stress, thereby reducing the possibility of settlement of the foundation pit;

2. The set connection components can increase the connection strength between adjacent reinforcement piles and effectively reduce the possibility of settlement of the foundation pit;

3. Set up geotextiles, so as to enhance the deformation resistance and tensile strength of the foam lightweight soil surface, and improve the load capacity of the foam lightweight soil surface.

Description of drawings

1 is a schematic diagram of the overall structure of the embodiment in this embodiment;

FIG. 2 is a schematic diagram of the structure of the reinforcing mesh in this embodiment.

Reference numerals: 1. Foundation pit; 11. Cushion layer; 2. Asphalt oil; 3. Pebble cushion; 31. Reinforced mesh; 4. Foam light soil; Deformation joint; 42. Lower foam light soil; 43. Geotextile; 5. Asphalt surface layer; 6. Reinforced pile; 61. Steel plate;

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

1 and 2, it is a bridge platform back foam lightweight soil roadbed structure disclosed by the utility model, including: a foundation pit 1, a number of reinforcement piles 6 are interspersed in the foundation pit 1, and the reinforcement piles 6 are Horizontal linear arrangement. The reinforcement piles 6 can reinforce the foundation pit 1 , increase the ability of the foundation pit 1 to bear stress, and reduce the possibility of settlement of the foundation pit 1 .

A mattress layer 11 is arranged on the surface of the foundation pit 1, and the mattress layer 11 can reduce the influence of uneven force on the foundation pit 1; the surface of the mattress layer 11 is poured with concrete 7, The gaps between the adjacent reinforcement piles 6 are filled, and subsequent construction is facilitated, and the mattress layer 11 is effectively protected.

At the same time, asphalt oil 2 is arranged on the surface of the foundation pit 1, and a pebble cushion layer 3 is arranged on the surface of the asphalt oil 2. Through the pebble cushion layer 3, the stress on the foundation pit 1 can be further increased. In addition, the surface of the pebble cushion layer 3 is provided with a reinforced mesh sheet 31, the material of the reinforced mesh sheet 31 is steel, as shown in FIG. , the connection between the pebble cushion 3 and the foam light soil 4 can be strengthened by the reinforcing mesh 31 arranged between the pebble cushion 3 and the foam light soil 4 .

The foam lightweight soil 4 is composed of an upper layer foam lightweight soil 41 and a lower layer foam lightweight soil 42, and a geotextile 43 is provided on the surface of the lower layer foam lightweight soil 42, and the foam lightweight soil 4 can be enhanced through the geotextile 43. The deformation resistance and tensile strength of the surface improve the load capacity of the foam light soil 4 ground. Deformation joints 411 are formed on the foam lightweight soil 4. The deformation joints 411 are arranged in a horizontal and linear manner. The deformation joints 411 are arranged every 10m. The gap of the deformation joints 411 is 2cm. There are certain gaps at intervals, which allow the foam light soil 4 subgrade to undergo a little shrinkage, expansion and uneven settlement.

An asphalt surface layer 5 is provided on the surface of the upper layer of foamed lightweight soil 41 , and the adhesion between the asphalt surface layer 5 and the foamed lightweight soil 4 can be improved by the asphalt oil 2 provided on the surface of the foundation pit 1 .

In addition, connecting components are provided between adjacent reinforcement piles 6 , and the connection components can improve the connection strength between the reinforcement piles 6 .

In this embodiment, the connection assembly includes: a steel plate 61 installed between adjacent reinforcement piles 6 . The steel plate 61 is installed horizontally and can be inserted into the reinforcement pile 6 . At the same time, the reinforcement pile 6 is provided with a positioning hole, and the steel plate 61 is provided with a positioning hole. There are through holes corresponding to the positioning holes, and reinforcing ribs 64 are inserted through the through holes and the positioning holes. The material of the reinforcing ribs 64 is steel material. By inserting the reinforcing ribs 64 in the positioning holes and the through holes, the adjacent reinforcing piles 6 can be connected together, thereby improving the connection strength between the reinforcing piles 6 and further improving the stress of the foundation pit 1 . It reduces the possibility of settlement of the foundation pit 1.

In addition, reinforcing bars 611 are installed on the side of the steel plate 61 close to the foundation pit 1, the number of the reinforcing bars 611 is two, and the ends of the reinforcing bars 611 away from the reinforcing piles 6 are inserted into the adjacent reinforcing piles 6, so that the adjacent reinforcing piles 6 can be improved. The connection strength between the reinforced piles 6 improves the ability of the foundation pit 1 to bear stress, and reduces the possibility of settlement of the foundation pit 1 .

The embodiments of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention, therefore: all equivalent changes made according to the structure, shape and principle of the present invention are It should be covered within the protection scope of the present invention.

Claims (8)

1. A foam lightweight soil roadbed structure on the back of a bridge platform, comprising: a foundation pit (1), and an asphalt oil (2) arranged on the surface of the foundation pit (1), characterized in that: the foundation pit (1) 1) Reinforcing piles (6) in a linear arrangement are interspersed inside, concrete (7) is arranged on the surface of the foundation pit (1), and asphalt oil (2) is arranged on the surface of the concrete (7), so The surface of the asphalt oil (2) is provided with a pebble cushion (3), the surface of the pebble cushion (3) is provided with a foamed light soil (4), and the surface of the foamed light soil (4) is provided with In the asphalt surface layer (5), a connection component for improving the connection strength of the reinforcement piles (6) is provided between the adjacent reinforcement piles (6). 2. The bridge platform back foam lightweight soil roadbed structure according to claim 1, characterized in that: the connecting component comprises: a steel plate (61) installed between the reinforcing piles (6), and opening the The positioning holes on the reinforcement piles (6) are through holes opened on the steel plate (61) and corresponding to the positioning holes, and the positioning holes and the reinforcing ribs (64) in the through holes are inserted. 3. A bridge platform back foam lightweight soil roadbed structure according to claim 1, characterized in that: the foam lightweight soil (4) is divided into an upper layer of foam lightweight soil (41) and a lower layer of foam lightweight soil (42), a geotextile (43) for enhancing the deformation resistance and tensile strength of the surface of the foam lightweight soil (41) is provided on the surface of the upper layer of the foam lightweight soil (41). 4. A bridge platform back foam lightweight soil roadbed structure according to claim 1, characterized in that: between the pebble cushion (3) and the lower layer of foam lightweight soil (42), a pebble cushion for strengthening is provided The reinforcing mesh sheet (31) connected between the layer (3) and the lower layer of foam lightweight soil (42). 5. A bridge platform back foam lightweight soil roadbed structure according to claim 1, characterized in that: a foundation pit (1) for reducing the foundation pit (1) is provided between the foundation pit (1) and the concrete (7). Unevenly stressed mattress pad (11). 6. The bridge platform back foam lightweight soil roadbed structure according to claim 2, characterized in that: steel bars (611) are welded on the side of the steel plate (61) close to the foundation pit (1). One end of the steel bar (611) away from the steel plate (61) is embedded in the reinforcement pile (6). 7. The bridge platform back foam lightweight soil roadbed structure according to claim 1, characterized in that: the foam lightweight soil (4) is provided with linearly arranged deformation joints (411). 8. The bridge platform back foam lightweight soil roadbed structure according to claim 7, wherein the deformation joint (411) has a joint width of 2 cm.

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