Bridge abutment back backfilling structure applying foam light soil

Abstract

The utility model discloses an abutment back backfill structure applying foam light soil, which comprises a roadbed, a transverse plate and a reinforcing plate I. The surface of the roadbed is provided with a backfill groove, one end of the backfill groove is fixedly connected with a bridge abutment back, the other end of the backfill groove is provided with a reserved step, and the bottom of the backfill groove and the surface of the reserved step are fixedly provided with grooves I; the transverse plate is fixedly connected to the upper surface of the first fixing column, the upper surface of the transverse plate is fixedly connected with the second fixing column, the surface of the second fixing column is fixedly connected with the fixing plate, and the upper surface of the fixing plate is fixedly connected with the positioning block. The first reinforcing plate is slidably connected to the upper surface of the fixing plate through the positioning block and the positioning groove, and a through groove is formed in the surface of the first reinforcing plate. The foam light soil is applied to a bridge abutment back backfill structure, the problem of post-construction settlement of filler in the backfill structure is effectively solved, the construction speed is high, and a large amount of manpower cost and material resource investment are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge roads, in particular to a structure for backfilling the abutment with foamed light soil. Background Technique

[0002] Foamed light soil is a new type of building energy-saving material that utilizes waste, is environmentally friendly, energy-saving, inexpensive and non-combustible. Foamed light soil is formed by introducing gases such as air, nitrogen, carbon dioxide, and oxygen into the concrete slurry through chemical or physical means according to application needs, and through reasonable curing and shaping, it forms a concrete product containing a large number of small closed pores and having a certain strength, which is quite suitable as a filling material at the connection position between the bridge abutment and the road surface; currently, the bridge abutment is one of the main components for supporting the bridge. The bridge abutments at both ends of the bridge will contact the roadbed. Therefore, the bridge abutments at both ends not only play a role in supporting the bridge, but also can withstand the pressure of the roadbed on one side of the bridge abutment back. The backfilling of the bridge abutment back is mainly to solve the settlement problem between different structures. In the existing backfilling technologies, the back of the bridge abutment is mostly filled with earthwork. However, the post-construction settlement of earthwork backfilling is large. After long-term use, the earthwork backfilled bridge deck will form a concave surface, and vehicle jumping will occur when vehicles pass by. Moreover, the construction speed of earthwork backfilling is slow, the cycle is long, and it consumes a large amount of manpower and material resources at the same time.

[0003] Therefore, we make improvements on this and propose a structure for backfilling the abutment with foamed light soil. Content of the Utility Model

[0004] The purpose of the utility model is to provide a structure for backfilling the abutment with foamed light soil to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A structure for backfilling the abutment with foamed light soil, including a roadbed, a cross plate and a first reinforcing plate. A backfilling groove is opened on the surface of the roadbed. One end of the backfilling groove is fixedly connected to the bridge abutment back, and a reserved step is opened at the other end of the backfilling groove. Grooves I are fixedly opened on the surfaces of the bottom of the backfilling groove and the reserved step. A first fixing column is fixedly connected in the groove I through a limiting plate, and at the same time, the limiting plate is fixedly connected to the surface of the first fixing column. The cross plate is fixedly connected to the upper surface of the first fixing column. A second fixing column is fixedly connected to the upper surface of the cross plate, and a fixing plate is fixedly connected to the surface of the second fixing column. A positioning block is fixedly connected to the upper surface of the fixing plate. At the same time, a support plate is fixedly connected to the upper end of the second fixing column. A layer of foamed light soil is filled in the backfilling groove. Road surface layers are fixedly connected to the upper surfaces of the foamed light soil layer and the roadbed. Positioning grooves are symmetrically opened at both ends of the first reinforcing plate. The first reinforcing plate is slidably connected to the upper surface of the fixing plate through the positioning block and the positioning groove. A through groove is opened on the surface of the first reinforcing plate. At the same time, one end of the second reinforcing plate away from the fixing plate is fixedly connected to the first fixing column.

[0006] Preferably, the first fixing column is of a cylindrical structure, and three limiting plates are fixedly connected to the surface of the lower end of the first fixing column in parallel at equal intervals. The three limiting plates are all of an annular structure. At the same time, the first fixing column and the limiting plates together form a structure with a cross-sectional shape like the Chinese character 'gan' in axial section.

[0007] Preferably, the cross plate is of a rectangular structure. The cross plate is fixedly connected to the first fixing column at the bottom of the backfill groove. The cross plate and the first fixing column together form a structure like the Chinese character 'jiong' in shape. At the same time, three second fixing columns are fixedly connected to the upper surface of the cross plate in parallel at equal intervals.

[0008] Preferably, the second fixing column is of a cylindrical structure. The second fixing column and the cross plate together form an 'E'-shaped structure. A plurality of fixing plates are fixedly connected to the surface of the second fixing column in parallel at equal intervals. At the same time, the fixing plates as a whole are of a frustum-shaped structure.

[0009] Preferably, a second groove is formed inside the fixing plate. The second groove is of a cylindrical structure. The fixing plate is fixedly connected to the surface of the second fixing column through the second groove. At the same time, eight positioning blocks are fixedly connected to the upper surface of the fixing plate in a circumferential and equally spaced manner. The eight positioning blocks are all of a cylindrical structure.

[0010] Preferably, the first reinforcing plate is of a rectangular structure. Two positioning grooves are respectively formed at both ends of the first reinforcing plate. The sizes of the positioning grooves and the positioning blocks are adapted to each other. A through groove is symmetrically formed on the surface of the first reinforcing plate. The cross-sectional shape of the through groove is a circular structure, and the axial cross-sectional shape of the through groove is a bow-shaped structure.

[0011] Preferably, the support plate fixedly connected to the upper end of the second fixing column is of a frustum-shaped structure. The fixing plate is slidably connected to four first reinforcing plates through the positioning blocks. The four first reinforcing plates are distributed in a cross shape. At the same time, the first reinforcing plate and the second fixing column together form a structure like the Chinese character 'jing' in shape.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: The foam lightweight soil is applied to the backfill structure of the abutment. Through the cooperation of the first fixing column and the limiting plates, the first fixing column can obtain more contact area in the subgrade, thereby enhancing the stability of the first fixing column, reducing the probability of the first fixing column being extruded and sinking, and further providing stable support for the second fixing column and the reinforcing plate. And through the cooperation of the second fixing column, the fixing plate, the positioning block, the first reinforcing plate and the second reinforcing plate, a skeleton structure is formed inside the foam lightweight soil layer, thereby enhancing the stability of the overall structure, further avoiding the post-construction settlement problem of the filler in the backfill structure, and further avoiding the problem of vehicle jumping when the vehicle passes by. At the same time, the fixing plate is slidably connected to the first reinforcing plate and the second reinforcing plate through the positioning block, which can improve the assembly efficiency, thereby improving the construction speed, and saving a large amount of labor costs and material inputs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1This is the front view schematic diagram of the structure of the present utility model;

[0014] Figure 2 This is the structure of the present utility model Figure 1 The enlarged schematic diagram at position A;

[0015] Figure 3 This is the structure of the present utility model Figure 2 The top view schematic diagram;

[0016] Figure 4 This is the sectional view schematic diagram of the reinforcing plate of the structure of the present utility model.

[0017] In the figure: 1, subgrade; 2, first fixing column; 3, cross plate; 4, bridge abutment; 5, foamed lightweight soil layer; 6, first reinforcing plate; 7, second fixing column; 8, fixing plate; 9, positioning block; 10, support plate; 11, reserved step; 12, limiting plate; 13, through groove; 14, positioning groove. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figure 1—4, the present utility model provides a technical solution: a foamed lightweight soil is applied to the backfill structure of the abutment, including a roadbed 1, a transverse plate 3 and a first reinforcing plate 6. A backfill groove is opened on the surface of the roadbed 1. One end of the backfill groove is fixedly connected to the bridge abutment back 4, and a reserved step 11 is opened at the other end of the backfill groove. Grooves 1 are fixedly opened on the surfaces of the bottom of the backfill groove and the reserved step 11. The first fixing column 2 is fixedly connected to the groove 1 through a limiting plate 12. The first fixing column 2 is in a cylindrical structure, and three groups of limiting plates 12 are fixedly connected to the surface of the lower end of the first fixing column 2 in parallel and at equal intervals. The three groups of limiting plates 12 are all in an annular structure. At the same time, the first fixing column 2 and the limiting plate 12 together form a cross-shaped structure in the axial section; the transverse plate 3 is in a rectangular structure. The transverse plate 3 is fixedly connected to the first fixing column 2 at the bottom of the backfill groove. The transverse plate 3 and the first fixing column 2 together form a U-shaped structure. At the same time, three groups of second fixing columns 7 are fixedly connected to the upper surface of the transverse plate 3 in parallel and at equal intervals; the second fixing column 7 is in a cylindrical structure. The second fixing column 7 and the transverse plate 3 together form an E-shaped structure. A plurality of groups of fixing plates 8 are fixedly connected to the surface of the second fixing column 7 in parallel and at equal intervals. At the same time, the fixing plate 8 as a whole is in a frustum shape; and the surface of the second fixing column 7 is fixedly connected to the fixing plate 8. A groove 2 is opened inside the fixing plate 8. The groove 2 is in a cylindrical structure. The fixing plate 8 is fixedly connected to the surface of the second fixing column 7 through the groove 2. At the same time, eight groups of positioning blocks 9 are fixedly connected to the upper surface of the fixing plate 8 in a circumferential and equidistant manner. The eight groups of positioning blocks 9 are all in a cylindrical structure; the support plate 10 fixedly connected to the upper end of the second fixing column 7 is in a frustum shape. The fixing plate 8 is slidably connected to four groups of first reinforcing plates 6 through the positioning blocks 9. The four groups of first reinforcing plates 6 are distributed in a cross shape. At the same time, the first reinforcing plate 6 and the second fixing column 7 together form a grid structure; at the same time, the upper end of the second fixing column 7 is fixedly connected to the support plate 10. A foamed lightweight soil layer 5 is filled in the backfill groove. The upper surfaces of the foamed lightweight soil layer 5 and the roadbed 1 are both fixedly connected to the road surface layer. Positioning grooves 14 are symmetrically opened at both ends of the first reinforcing plate 6. The first reinforcing plate 6 is in a rectangular structure. Two groups of positioning grooves 14 are respectively opened at both ends of the first reinforcing plate 6. The positioning grooves 14 and the positioning blocks 9 are of matching sizes. A through groove 13 is symmetrically opened on the surface of the first reinforcing plate 6. The cross section of the through groove 13 is in a circular structure. The axial section of the through groove 13 is in a bow tie shape; the first reinforcing plate 6 is slidably connected to the upper surface of the fixing plate 8 through the positioning blocks 9 and the positioning grooves 14. At the same time, the end of the second reinforcing plate away from the fixing plate 8 is fixedly connected to the first fixing column 2.

[0020] As Figure 1 shown, the foamed lightweight soil layer 5 is evenly divided into multiple layers. The thickness of each layer of the foamed lightweight soil layer 5 is equal to the height of the corresponding reserved step 11, which is convenient for laying the next layer of the foamed lightweight soil layer 5. At the same time, fixing plates 8, first reinforcing plates 6 and second reinforcing plates are arranged in the middle of the foamed lightweight soil layer 5, which can effectively enhance the structural stability of the foamed lightweight soil layer 5.

[0021] AsFigure 3 and Figure 4 As shown in Figure 4 , the through grooves 13 formed on the surfaces of the first stiffening plate 6 and the second stiffening plate can facilitate the laying of the lightweight foam soil layer 5, prevent gaps from being generated between the lower surfaces of the first stiffening plate 6 and the second stiffening plate and the lightweight foam soil layer 5, and the segmented first stiffening plate 6 and second stiffening plate can reduce the probability of bending due to extrusion, thereby enhancing the structural stability of the lightweight foam soil layer 5.

[0022] Working principle: When using this lightweight foam soil for the backfill structure of the abutment, first embed the first fixing column 2 into the bottom of the backfill groove and the surface of the reserved step 11 in sequence, then fixedly connect the first fixing column 2 located at the bottom of the backfill groove to the transverse plate 3, then fixedly connect the second fixing column 7 to the upper surface of the transverse plate 3, connect the adjacent second fixing columns 7 through the first stiffening plate 6, embed the positioning block 9 into the positioning groove 14 formed on the first stiffening plate 6, and the upper end of the first fixing column 2 fixedly connected to the surface of the reserved step 11 is fixedly connected to one end of the second stiffening plate, and the other end of the second stiffening plate is connected to the corresponding second fixing column 7 through the positioning groove 14 and the positioning block 9. Then, lay the lightweight foam soil layer 5 layer by layer according to the distribution of the reserved steps 11. When filling the material, the material will wrap the first stiffening plate 6 and the second stiffening plate inside to form a framework. Finally, lay the road surface layer on the upper surfaces of the roadbed 1 and the lightweight foam soil layer 5; this is the entire process of the application of this lightweight foam soil to the backfill structure of the abutment.

[0023] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foamed lightweight soil is applied to the backfill structure of the abutment, including a roadbed (1), a transverse plate (3) and a first reinforcing plate (6), and is characterized in that: A backfill groove is formed on the surface of the subgrade (1). One end of the backfill groove is fixedly connected to the bridge abutment (4), and a reserved step (11) is formed at the other end of the backfill groove. Grooves I are fixedly formed on the surfaces of the bottom of the backfill groove and the reserved step (11). The fixing column I (2) is fixedly connected in the groove I through the limiting plate (12). At the same time, the limiting plate (12) is fixedly connected to the surface of the fixing column I (2). The cross plate (3) is fixedly connected to the upper surface of the fixing column I (2). The fixing column II (7) is fixedly connected to the upper surface of the cross plate (3). The fixing plate (8) is fixedly connected to the surface of the fixing column II (7). The positioning block (9) is fixedly connected to the upper surface of the fixing plate (8). At the same time, the upper end of the fixing column II (7) is fixedly connected to the support plate (10). The foam lightweight soil layer (5) is filled in the backfill groove. The pavement layers are fixedly connected to the upper surfaces of the foam lightweight soil layer (5) and the subgrade (1). Positioning grooves (14) are symmetrically formed at both ends of the first reinforcing plate (6). The first reinforcing plate (6) is slidably connected to the upper surface of the fixing plate (8) through the positioning block (9) and the positioning groove (14). A through groove (13) is formed on the surface of the first reinforcing plate (6). At the same time, one end of the second reinforcing plate away from the fixing plate (8) is fixedly connected to the fixing column I (2).

2. A lightweight foamed soil applied to the backfill structure of the abutment according to claim 1, characterized in that: The fixing column I (2) has a cylindrical structure. Three groups of limiting plates (12) are fixedly connected to the surface of the lower end of the fixing column I (2) at equal intervals in parallel. The three groups of limiting plates (12) all have an annular structure. At the same time, the fixing column I (2) and the limiting plate (12) together form a cross-shaped structure in the axial section.

3. A lightweight foamed soil applied to the backfill structure of an abutment according to claim 1, characterized in that: The cross plate (3) has a rectangular structure. The cross plate (3) is fixedly connected to the fixing column I (2) at the bottom of the backfill groove. The cross plate (3) and the fixing column I (2) together form a U-shaped structure. At the same time, three groups of fixing columns II (7) are fixedly connected to the upper surface of the cross plate (3) at equal intervals in parallel.

4. A lightweight foamed soil applied to the backfill structure of an abutment according to claim 1, characterized in that: The fixing column II (7) has a cylindrical structure. The fixing column II (7) and the cross plate (3) together form an E-shaped structure. Multiple groups of fixing plates (8) are fixedly connected to the surface of the fixing column II (7) at equal intervals in parallel. At the same time, the fixing plate (8) as a whole has a frustum-shaped structure.

5. A lightweight foamed soil applied to the backfill structure of an abutment according to claim 1, characterized in that: A groove II is formed inside the fixing plate (8). The groove II has a cylindrical structure. The fixing plate (8) is fixedly connected to the surface of the fixing column II (7) through the groove II. At the same time, eight groups of positioning blocks (9) are fixedly connected to the upper surface of the fixing plate (8) at equal intervals in a circular arrangement. The eight groups of positioning blocks (9) all have a cylindrical structure.

6. A backfill structure for abutment using the foamed lightweight soil according to claim 1, characterized in that: The first reinforcing plate (6) has a rectangular structure. Two groups of positioning grooves (14) are respectively formed at both ends of the first reinforcing plate (6). The positioning grooves (14) and the positioning blocks (9) are of matching sizes. A through groove (13) is symmetrically formed on the surface of the first reinforcing plate (6). The cross section of the through groove (13) has a circular structure. The axial section of the through groove (13) has a bow-shaped structure.

7. A backfill structure for abutment using the foamed lightweight soil according to claim 1, characterized in that: The support plate (10) fixedly connected to the upper end of the second fixed column (7) has a frustum-shaped structure, and the fixing plate (8) is slidably connected to four first reinforcing plates (6) through positioning blocks (9). The four first reinforcing plates (6) are combined together in a cross-shaped distribution. At the same time, the first reinforcing plates (6) and the second fixed column (7) are combined together to form a grid structure.

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