Foam light soil roadbed

Abstract

The utility model discloses a foam light soil roadbed which comprises a cushion layer and an asphalt layer arranged above the cushion layer, a pouring frame used for being filled with roadbed materials is arranged between the cushion layer and the asphalt layer, the roadbed materials comprise a foam light soil layer, and the pouring frame comprises a bottom plate and two side plates which are symmetrical front and back and are fixedly arranged at the top end of the bottom plate. A plurality of buffer plates are arranged on the inner wall of the side plate from top to bottom in a downward inclined mode from outside to inside, a plurality of triangular plates are fixedly arranged on the lower portion of the outer wall of the side plate from left to right at equal intervals, and the bottom ends of the triangular plates are fixedly connected with the top end of the bottom plate. The structure is simple, the structure is compact, filling of roadbed materials is facilitated, meanwhile, diffused pressure is gradually decreased and absorbed through the buffer strips and the buffer plates, the upper triangular plates support the side plates, and therefore the effect of reducing sedimentation is achieved, and meanwhile the foam light soil layer is beneficial to sedimentation reduction due to the characteristics of the foam light soil layer.

Description

Technical Field

[0001] The utility model relates to the field of roadbed, in particular to a foam lightweight soil roadbed. Background Art

[0002] Due to the characteristics of high speed and large traffic capacity, expressways have high requirements for roadbeds. However, some sections of expressways are now paved directly on the ground. The newly built roadbed is prone to consolidation and settlement due to the effect of pressure. Consolidation and settlement will cause cracks and depressions in the road surface, thereby damaging the highway and having a great impact on highway safety. Utility Model Content

[0003] The utility model aims to provide a foam lightweight soil roadbed to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a foam lightweight soil roadbed, including a cushion layer and an asphalt layer arranged above the cushion layer, a casting frame for filling the roadbed material is arranged between the cushion layer and the asphalt layer, the roadbed material includes a foam lightweight soil layer, the casting frame includes a base plate and two side plates which are symmetrical front and back and fixedly provided with the top of the base plate, a plurality of buffer plates which are evenly spaced from top to bottom and inclined downward from outside to inside are arranged on the inner wall of the side plate, a plurality of triangular plates are evenly spaced from left to right and fixedly provided on the lower part of the outer wall of the side plate, and the bottom end of the triangular plate is fixedly connected to the top of the base plate.

[0005] Furthermore, two groups of buffer mechanisms are symmetrically arranged at the top of the bottom plate between the two side plates. The buffer mechanism includes a plurality of buffer strips that are equally spaced and fixed on the top of the bottom plate. The top of the buffer strips is tilted downward from the outside to the inside.

[0006] Furthermore, a first groove is provided at the lower part of the left end of the base plate, a first extension plate is fixedly provided at the lower part of the left end of the base plate, the bottom end of the first groove is parallel to the top end of the extension plate, a first clamping slot is provided near the bottom end of the first extension plate, and a first clamping strip whose outer wall matches the inner wall of the first clamping slot is fixedly provided at the top end of the first extension plate away from the base plate.

[0007] Furthermore, a second extension plate is fixedly provided at the lower part of the front end of the base plate, a second groove is provided at the lower part of the rear end of the base plate, and the bottom end of the second groove is parallel to the top end of the second extension plate; a second clamping slot is provided near the bottom end of the second extension plate; a second clamping strip is fixedly provided at the bottom end of the second extension plate away from the base plate, and the outer wall of the second clamping strip matches the inner wall of the second clamping slot.

[0008] Furthermore, the roadbed material also includes a gravel layer and a crushed stone layer which are laid sequentially from top to bottom below the foam lightweight soil layer.

[0009] Furthermore, a plurality of drainage openings are arranged at equal intervals on the lower portion of the outer wall of the side plate, and the height of the gravel layer is greater than the height of the inner wall of the drainage opening.

[0010] The beneficial effects achieved by the utility model are as follows: the roadbed material is limited by the casting frame, and the filling of the roadbed material is facilitated; at the same time, the diffused pressure is gradually reduced and absorbed by the buffer strips and buffer plates, and the support of the side plates by the upper triangular plates is achieved, so as to achieve the effect of reducing settlement; at the same time, the foam lightweight soil layer is also conducive to reducing the settlement problem due to its own characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a cross-sectional view of a foam lightweight soil roadbed in an embodiment;

[0012] Figure 2 It is a schematic diagram of the structure of the casting frame in the embodiment. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings.

[0014] like Figure 1-2 As shown, the utility model discloses a foam lightweight soil roadbed, comprising: a cushion layer 1 and an asphalt layer 2 arranged above the cushion layer 1, a casting frame 3 for filling roadbed materials is arranged between the cushion layer 1 and the asphalt layer 2, the roadbed material comprises a foam lightweight soil layer 4, the casting frame 3 comprises a bottom plate 31 and two side plates 32 which are symmetrical front and back and fixedly provided with the top of the bottom plate 31, a plurality of buffer plates 33 are evenly spaced from top to bottom on the inner wall of the side plate 32 and are tilted downward from outside to inside, a plurality of triangular plates 34 are evenly spaced and fixedly provided on the lower part of the outer wall of the side plate 32 from left to right, and the bottom end of the triangular plate 34 is fixedly connected to the top of the bottom plate 31.

[0015] Further, such as Figure 1-2 As shown, two groups of buffer mechanisms are symmetrically arranged at the top of the bottom plate 31 between the two side plates 32. The buffer mechanism includes a plurality of buffer strips 35 that are equally spaced and fixedly arranged on the top of the bottom plate 31. The top of the buffer strips 35 is arranged to be tilted downward from the outside to the inside.

[0016] Based on the above structure, Figure 1-2 As shown, during the construction of the expressway, the pouring frame 3 is first placed on the cushion layer 1, and then the pouring frame 3 is filled with foamed lightweight soil to form a foamed lightweight soil layer, and then the asphalt layer 2 is laid on the foamed lightweight soil layer;

[0017] When a vehicle is traveling on a highway, the downward pressure generated on the highway will act on the roadbed material through the asphalt layer 2, and the roadbed material will apply pressure to the casting frame 3. Due to the support of the bottom plate 31, the downward pressure will diffuse to both sides when it can no longer be applied downward. When the pressure begins to diffuse, the buffer strips 35 of the two symmetrically arranged buffer mechanisms on the bottom plate 31 will cause a gradual decrease from the inside to the outside of the diffused pressure due to the inclined setting of the top (similar to a breakwater). Then the diffused pressure will act on the side plate 32, and the triangular plate 34 will provide inward support to the side plate 32. At the same time, the buffer plate 33 on the side plate 32 will absorb the diffused pressure layer by layer, thereby achieving the effect of reducing settlement. At the same time, the foam lightweight soil layer 4 is also conducive to reducing the settlement problem due to its own characteristics.

[0018] Further, such as Figure 1 As shown, in order to increase the length of the roadbed material filling according to demand, a first groove 311 is provided at the lower part of the left end of the base plate 31, and a first extension plate 312 is fixedly provided at the lower part of the left end of the base plate 31, the bottom end of the first groove 311 is parallel to the top of the extension plate 312, and a first clamping groove 313 is provided at the bottom of the first groove 311 near the first extension plate 312, and a first clamping strip 314 whose outer wall matches the inner wall of the first clamping groove 313 is fixedly provided at the top of the first extension plate 312 away from the base plate 31. When it is necessary to increase the length of the roadbed material filling, the two adjacent casting frames 3 are longitudinally spliced. During splicing, the first clamping strip 314 of one casting frame 3 is clamped with the first clamping groove 313 of the other casting frame.

[0019] Further, such as Figure 1-2 As shown, in order to increase the width of the roadbed material filling according to demand, a second extension plate 315 is fixedly provided at the lower part of the front end of the base plate 31, and a second groove 316 whose bottom end is parallel to the top of the second extension plate 315 is provided at the lower part of the rear end of the base plate 31, and a second clamping groove 317 is provided near the bottom end of the second extension plate 315 of the second groove 316, and a second clamping strip 318 whose outer wall matches the inner wall of the second clamping groove 317 is fixedly provided at the bottom end of the second extension plate 315 away from the base plate 31. When it is necessary to increase the width of the roadbed material filling, two adjacent casting frames 3 are horizontally spliced. During splicing, the second clamping strip 31 of one casting frame 3 is clamped with the second clamping groove 317 of the other casting frame, and the roadbed material is also filled between the two adjacent casting frames 3.

[0020] Further, such as Figure 1 As shown, in order to increase the buffering performance of the expressway, the roadbed material also includes a gravel layer 5 and a crushed stone layer 6 which are laid sequentially from top to bottom under the foam lightweight soil layer.

[0021] Further, such as Figure 1-2As shown, in order to increase the hydrophobicity of the highway, a plurality of drainage openings 321 are evenly spaced at the lower portion of the outer wall of the side plate 32 , and the height of the gravel layer 6 is greater than the inner wall height of the drainage openings 321 .

[0022] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A foamed lightweight soil roadbed, comprising a cushion layer (1) and an asphalt layer (2) arranged above the cushion layer (1), characterized in that: A casting frame (3) for filling roadbed materials is arranged between the cushion layer (1) and the asphalt layer (2), wherein the roadbed materials include a foam lightweight soil layer (4), and the casting frame (3) includes a bottom plate (31) and two side plates (32) symmetrically arranged front and rearward and fixedly provided with the top of the bottom plate (31), wherein a plurality of buffer plates (33) are arranged at equal intervals from top to bottom on the inner wall of the side plate (32) and are arranged downwardly inclined from outside to inside, and a plurality of triangular plates (34) are arranged at equal intervals from left to right on the lower part of the outer wall of the side plate (32) and are fixedly provided, and the bottom end of the triangular plate (34) is fixedly connected to the top of the bottom plate (31).

2. The foamed lightweight soil roadbed according to claim 1, characterized in that: Two groups of buffer mechanisms are symmetrically arranged at the top of the bottom plate (31) between the two side plates (32), and the buffer mechanism comprises a plurality of buffer strips (35) fixedly arranged at equal intervals on the top of the bottom plate (31), and the tops of the buffer strips (35) are arranged to be inclined downward from the outside to the inside.

3. The foamed lightweight soil roadbed according to claim 1, characterized in that: A first groove (311) is provided at the lower part of the left end of the bottom plate (31), and a first extension plate (312) is fixedly provided at the lower part of the left end of the bottom plate (31), the bottom end of the first groove (311) is parallel to the top end of the extension plate (312), a first clamping groove (313) is provided at the lower end of the first groove (311) close to the first extension plate (312), and a first clamping strip (314) whose outer wall matches the inner wall of the first clamping groove (313) is fixedly provided at the top end of the first extension plate (312) away from the bottom plate (31).

4. The foamed lightweight soil roadbed according to claim 1, characterized in that: A second extension plate (315) is fixedly arranged at the lower part of the front end of the bottom plate (31), a second groove (316) whose bottom end is parallel to the top end of the second extension plate (315) is arranged at the lower part of the rear end of the bottom plate (31), a second clamping groove (317) is arranged near the bottom end of the second extension plate (315) of the second groove (316), and a second clamping strip (318) whose outer wall matches the inner wall of the second clamping groove (317) is fixedly arranged at the bottom end of the second extension plate (315) away from the bottom plate (31).

5. The foamed lightweight soil roadbed according to any one of claims 1 to 4, characterized in that: The roadbed material also includes a gravel layer (5) and a crushed stone layer (6) which are laid sequentially from top to bottom below the foam lightweight soil layer.

6. The foamed lightweight soil roadbed according to claim 5, characterized in that: A plurality of drainage openings (321) are arranged at equal intervals on the lower portion of the outer wall of the side plate (32), and the height of the gravel layer (6) is greater than the height of the inner wall of the drainage opening (321).

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