Slope crest widening structure

Abstract

The utility model relates to the technical field of building construction, and discloses a side slope crest widening structure which comprises a construction top beam, a support pile, a support pile top beam, a plurality of reinforcing steel bar soil nails, a plurality of vertical steel pipes and a reinforcing steel bar net. One ends of the multiple reinforcing steel bar soil nails penetrate through the construction crown beam to be inserted into the side wall of the foundation pit and are arranged in parallel at intervals in the vertical direction and the first direction, the multiple vertical steel pipes are arranged at intervals in the first direction, and the other ends of the multiple reinforcing steel bar soil nails are fixedly connected with the corresponding vertical steel pipes. A concrete surface layer is arranged on the other side wall of the reinforcing mesh, the construction crown beam, the multiple reinforcing soil nails, the multiple vertical steel pipes and the reinforcing mesh are matched to form a backfill space used for containing a backfill sand bag, and a curing layer is arranged above the backfill sand bag and used for forming a construction channel. The slope top widening structure has the advantages that the slope top can be widened without increasing the elevation of the support pile, a construction channel is arranged, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a slope top widening structure. Background Art

[0002] At present, in order to save costs, the top of the foundation pit is often set as a slope structure. However, when the top of the foundation pit is set as a slope structure, the top of the slope is close to the construction red line and a construction channel cannot be set up. If the elevation of the support piles is raised to be flush with the top of the foundation pit and then the construction channel is laid, the construction cost will be high. Utility Model Content

[0003] The purpose of the utility model is to provide a slope top widening structure, which can widen the slope top without increasing the support pile elevation, set a construction channel, and reduce construction costs.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a slope top widening structure, including: a construction crown beam, a support pile, a support pile crown beam, a plurality of steel soil nails, a plurality of vertical steel pipes and a steel mesh;

[0005] The construction crown beam is arranged to fit the slope surface of the slope, the supporting pile is located in the foundation pit and the upper end is engaged with the lower end of the construction crown beam, the supporting pile crown beam is arranged on the supporting pile, the lower end of the vertical steel pipe is inserted into the supporting pile crown beam and is arranged close to the construction crown beam, the upper end of the vertical steel pipe is flush with the top of the slope, one end of a plurality of the steel bar soil nails penetrates the construction crown beam and is inserted into the side wall of the foundation pit, and is arranged parallel and spaced in the vertical direction and the first direction, a plurality of the vertical steel pipes are arranged spaced along the first direction, the other ends of the plurality of the steel bar soil nails are fixedly connected to the corresponding vertical steel pipes, the steel mesh is arranged vertically and one side wall is arranged to fit the outer wall of the vertical steel pipe, the other side wall of the steel mesh is provided with a concrete surface layer, the construction crown beam, the plurality of the steel bar soil nails, the plurality of the vertical steel pipes and the steel mesh cooperate to form a backfill space for placing backfill sand bags, and a solidifying layer is provided above the backfill sand bags to form a construction channel.

[0006] Furthermore, the angle between the axis of the reinforced soil nail and the slope surface of the slope is 15°-20°.

[0007] Furthermore, the reinforced soil nails and the vertical steel pipes are fixed by welding.

[0008] Furthermore, the outer wall of one end of the reinforced soil nail close to the vertical steel pipe is fitted with two first reinforcing ribs extending along the first direction and arranged at intervals along the vertical direction. The outer walls of the two first reinforcing ribs are fitted with the outer walls of the vertical steel pipe and the reinforced soil nail and are fixed by welding.

[0009] Furthermore, the outer wall of each of the first reinforcement bars is connected to a second reinforcement bar arranged along the extension direction of the reinforced soil nail, and the outer wall of the second reinforcement bar is in contact with the outer wall of the first reinforcement bar and the reinforced soil nail, and is fixed by welding.

[0010] Furthermore, the solidified layer includes a concrete layer and a sand and gravel layer arranged from bottom to top.

[0011] Furthermore, cement slurry is injected into the vertical steel pipe for fixing to the crown beam of the supporting pile.

[0012] Furthermore, the vertical steel pipes are spaced apart along the first direction at an interval of 300 mm to 600 mm.

[0013] Compared with the prior art, the utility model embodiment of a slope top widening structure has the following beneficial effects: the construction crown beam is arranged obliquely along the slope surface of the slope, the supporting pile is located in the foundation pit and the upper end is connected with the lower end of the construction crown beam, and there is no need to increase the elevation of the supporting pile; the supporting pile crown beam is arranged on the supporting pile, the lower end of the vertical steel pipe is inserted in the supporting pile crown beam and arranged close to the construction crown beam, one end of a plurality of steel bar soil nails is fixed to the side wall of the foundation pit, and the other end is fixed to the corresponding vertical steel pipe, and a steel mesh is arranged on the outer side of the vertical steel pipe, and the other side wall of the steel mesh is provided with a concrete surface layer, and the construction crown beam, a plurality of steel bar soil nails, a plurality of vertical steel pipes and a steel mesh cooperate to form a backfill space for placing backfill sand bags, and a solidification layer is provided above the backfill sand bags to form a construction channel. The slope top can be directly widened, the structure is stable and reliable, and the construction cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of the widened structure of the slope top of the embodiment of the utility model;

[0015] Figure 2 It is a schematic diagram of the assembly of the reinforced soil nails of the slope top widening structure according to the embodiment of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the steel mesh of the slope top widening structure in an embodiment of the utility model.

[0017] In the figure, 1. construction crown beam; 2. support piles; 3. support pile crown beam; 4. reinforced soil nails; 41. first reinforcement rib; 42. second reinforcement rib; 5. vertical steel pipe; 6. steel mesh; 7. concrete surface layer; 8. backfill space; 9. backfill sandbags; 10. solidification layer. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. used in the present invention to indicate the orientation or positional relationship are based on the positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred devices and elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, it should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0021] like Figure 1 As shown, a slope top widening structure of a preferred embodiment of the utility model is used for setting a construction channel within the slope construction red line a, which includes a construction crown beam 1, a support pile 2, a support pile crown beam 3, a plurality of steel soil nails 4, a plurality of vertical steel pipes 5 and a steel mesh 6; for ease of description, refer to Figure 3 , define the extension direction of the first reinforcing rib 41 as the first direction X, that is, vertical Figure 1 The direction of the section is the first direction. Among them, the construction crown beam 1 is set in line with the slope surface of the slope, the supporting pile 2 is located in the foundation pit and the upper end is connected to the lower end of the construction crown beam 1 to improve the support strength of the foundation pit, the supporting pile crown beam 3 is set on the supporting pile 2, and the lower end of the vertical steel pipe 5 is inserted in the supporting pile crown beam 3 and is set close to the construction crown beam 1. The upper end of the vertical steel pipe 5 is flush with the top height of the slope. In order to facilitate the support of the construction channel, one end of a plurality of steel soil nails 4 passes through the construction crown beam 1 and is inserted into the side wall of the foundation pit, and is arranged at intervals in the vertical direction and in parallel in the first direction, see Figure 1 , Figure 2 , multiple vertical steel pipes 5 are arranged at intervals along the first direction, the other ends of multiple steel bar soil nails 4 are fixedly connected to the corresponding vertical steel pipes 5, the steel mesh 6 is arranged vertically and one side wall is arranged in contact with the outer wall of the vertical steel pipe 5, and the other side wall of the steel mesh 6 is provided with a concrete surface layer 7. Specifically, refer to Figure 1The construction crown beam 1, multiple steel soil nails 4, multiple vertical steel pipes 5 and steel mesh 6 cooperate to form a backfill space 8 for placing backfill sand bags 9 to form a stable support, and a solidification layer 10 is provided above the backfill sand bags 9 to form a construction channel. The top of the slope can be widened without adjusting the elevation of the support piles 2, thereby reducing the construction cost.

[0022] In some embodiments, in order to improve the bearing capacity of the reinforced soil nail 4, the angle between the axis of the reinforced soil nail 4 and the slope surface of the slope is 15°-20°. Further, in order to facilitate the formation of a fixed and reliable backfill space 8, the reinforced soil nail 4 and the vertical steel pipe 5 are fixed by welding. Further, in order to improve the welding strength, refer to Figure 2 , two first reinforcing ribs 41 extending along the first direction and arranged at intervals along the vertical direction are attached to the outer wall of one end of the reinforced soil nail 4 near the vertical steel pipe. The outer walls of the two first reinforcing ribs 41 are attached to the outer walls of the vertical steel pipe 5 and the reinforced soil nail 4, and are fixed by welding. In order to further improve the connection strength and increase the welding area, the outer wall of each first reinforcing rib 41 is connected to a second reinforcing rib 42 arranged along the extension direction of the reinforced soil nail 4. The outer wall of the second reinforcing rib 42 is attached to the outer wall of the first reinforcing rib 41 and the reinforced soil nail 4, and is fixed by welding. In this embodiment, the diameter of the first reinforcing rib 41 is 18mm, and the diameter of the second reinforcing rib 42 is 20mm, which can be adjusted and selected according to actual construction requirements. Furthermore, in order to ensure that the construction channel has good support strength, the spacing of the vertical steel pipe 5 spaced along the first direction is 300mm-600mm, which can be adjusted according to the actual construction situation. In this embodiment, the steel mesh 6 uses a plurality of steel bars with a diameter of 6mm, and is spaced 200mm apart to form a mesh structure.

[0023] Furthermore, in order to facilitate the design of the construction channel, in this embodiment, the solidification layer 10 includes a concrete layer and a gravel layer arranged from bottom to top. The concrete layer can give the construction channel a certain support strength. Specifically, the concrete layer is cast by C20 plain concrete with a thickness of 150 mm, and the concrete surface layer 7 is sprayed by C20 concrete with a thickness of 80 mm. The gravel layer is paved with medium-coarse sand to make it easy to level the construction channel with the top plane of the slope. Furthermore, in order to facilitate the fixing of the vertical steel pipe 5, cement slurry is injected into the vertical steel pipe 5 for fixing with the support pile crown beam 3, wherein the water-cement ratio of the cement slurry is 0.5.

[0024] The construction process of the utility model is as follows: firstly, a slope construction crown beam 1 is set, and then the vertical steel pipes 5 are arranged at intervals on the supporting pile crown beam 3 along the first direction, and cement slurry is filled in the vertical steel pipes 5 for fixing, and then the vertical steel pipes 5 and the steel bar soil nails 4 are welded, a steel mesh 6 is set, and backfill sand bags 9 are set, a concrete surface layer 7 is sprayed, and finally a concrete layer is poured above the backfill sand bags 9 and a sand and gravel layer is set to complete the construction of the construction channel.

[0025] In summary, the embodiment of the utility model provides a slope top widening structure, the construction crown beam 1 is arranged obliquely along the slope surface of the slope, the support pile 2 is located in the foundation pit and the upper end is connected to the lower end of the construction crown beam 1, and there is no need to increase the elevation of the support pile 2; the support pile crown beam 3 is arranged on the support pile 2, the lower end of the vertical steel pipe 5 is inserted in the support pile crown beam 3 and arranged close to the construction crown beam 1, one end of a plurality of steel bar soil nails 4 is fixed to the side wall of the foundation pit, and the other end is fixed to the corresponding vertical steel pipe 5, and a steel mesh 6 is arranged on the outer side of the vertical steel pipe 5, and the other side wall of the steel mesh 6 is provided with a concrete surface layer 7, and the construction crown beam 1, the plurality of steel bar soil nails 4, the plurality of vertical steel pipes 5 and the steel mesh 6 cooperate to form a backfill space 8 for placing backfill sand bags 9, and a solidification layer 10 is provided above the backfill sand bags 9 to form a construction channel. The slope top can be widened directly, the structure is stable and reliable, and the construction cost is reduced.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A slope top widening structure, characterized in that: include: Construction of cap beams, support piles, cap beams of support piles, multiple reinforced soil nails, multiple vertical steel pipes and steel mesh; The construction crown beam is arranged to fit the slope surface of the slope, the supporting pile is located in the foundation pit and the upper end is engaged with the lower end of the construction crown beam, the supporting pile crown beam is arranged on the supporting pile, the lower end of the vertical steel pipe is inserted into the supporting pile crown beam and arranged close to the construction crown beam, the upper end of the vertical steel pipe is flush with the top of the slope, one end of a plurality of the steel bar soil nails penetrates the construction crown beam and is inserted into the side wall of the foundation pit, and is arranged parallel and spaced in the vertical direction and the first direction, a plurality of the vertical steel pipes are arranged spaced along the first direction, the other ends of the plurality of the steel bar soil nails are fixedly connected to the corresponding vertical steel pipes, the steel mesh is arranged vertically and one side wall is arranged to fit the outer wall of the vertical steel pipe, the other side wall of the steel mesh is provided with a concrete surface layer, the construction crown beam, the plurality of the steel bar soil nails, the plurality of the vertical steel pipes and the steel mesh cooperate to form a backfill space for placing backfill sand bags, and a solidifying layer is provided above the backfill sand bags to form a construction channel.

2. The slope top widening structure according to claim 1, characterized in that: The angle between the axis of the steel bar soil nail and the slope surface of the slope is 15°-20°.

3. The slope top widening structure according to claim 1, characterized in that: The steel bar soil nails and the vertical steel pipes are fixed by welding.

4. The slope top widening structure according to claim 3, characterized in that: The outer wall of one end of the reinforced soil nail close to the vertical steel pipe is fitted with two first reinforcing ribs extending along the first direction and arranged at intervals along the vertical direction. The outer walls of the two first reinforcing ribs are fitted with the outer walls of the vertical steel pipe and the reinforced soil nail and are fixed by welding.

5. The slope top widening structure according to claim 4, characterized in that: The outer wall of each of the first reinforcement bars is connected to a second reinforcement bar arranged along the extension direction of the reinforced soil nail, and the outer wall of the second reinforcement bar is in contact with the outer wall of the first reinforcement bar and the reinforced soil nail, and is fixed by welding.

6. The slope top widening structure according to claim 1, characterized in that: The solidified layer includes a concrete layer and a sand and gravel layer arranged from bottom to top.

7. The slope top widening structure according to claim 1, characterized in that: The vertical steel pipe is filled with cement slurry for fixing to the crown beam of the supporting pile.

8. The slope top widening structure according to claim 1, characterized in that: The vertical steel pipes are spaced apart along the first direction at an interval of 300 mm to 600 mm.

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