A prefabricated pile retaining wall composite formwork reinforcing structure

Abstract

A prefabricated pile retaining wall composite formwork reinforcing structure, including prefabricated concrete slab and cast-in-place concrete layer, the prefabricated concrete slab is arranged between adjacent piles, the cast-in-place concrete layer is arranged between upper and lower encloses the purlin and is located the outside of pile, prefabricated concrete slab, the cast-in-place concrete layer can be formed with the whole and is located between upper and lower encloses the purlin, on the one hand, the cast-in-place concrete layer front, back two sides are supported by prefabricated concrete slab, cast-in-place concrete formwork layer, and both sides of the formwork structure are more stable, the flatness and perpendicularity of cast-in-place concrete layer surface are better, meet the permanent landscape slope structure to the appearance and quality requirement, on the other hand, the prefabricated concrete slab in the built-in connection of pile and encloses the purlin, and structural collapse will not be caused by stress concentration, and then make the cast-in-place concrete panel perpendicularity and quality located on its outside can meet the permanent landscape slope structure requirement.

Description

Technical Field

[0001] This utility model relates to the field of rock and soil slope support technology, and in particular to a prefabricated pile retaining wall composite formwork reinforcement structure. Background Technology

[0002] With the increasing number of mountain construction projects, slope engineering that combines support and landscaping functions is often required due to the large topographical undulations and high risk of geological disasters. These projects often adopt a "permanent-temporary combination" approach, directly converting the basement support structure into a permanent landscape slope structure. Pile retaining wall structures, due to their flexible layout and strong construction adaptability, have become the preferred structure for this type of project.

[0003] However, the cast-in-place concrete panels of the pile retaining wall structure will encounter the following problems during application: First, the cast-in-place concrete panels are single-sided formwork structures that are prone to instability, resulting in poor surface flatness, which reduces the seepage prevention performance of the structure and fails to meet the appearance requirements of permanent landscape slope structures; Second, it is difficult to insert anchor bars in the rock and soil strata, and the walers and piles are only connected by welded steel bars, but the connecting steel bars will still cause structural collapse due to stress concentration, so that the verticality and quality of the cast-in-place concrete panels cannot meet the requirements of permanent landscape slope structures.

[0004] Based on this, a prefabricated composite formwork reinforcement structure for pile retaining walls is provided. Utility Model Content

[0005] The present invention aims to overcome the defects in the prior art and provide a prefabricated composite template reinforcement structure for pile retaining walls.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a precast pile retaining wall composite formwork reinforcement structure, including a precast concrete slab and a cast-in-place concrete layer. The precast concrete slab is arranged between adjacent pile rows, and the cast-in-place concrete layer is arranged between the upper and lower walers and located outside the pile rows and the precast concrete slab.

[0007] As a preferred embodiment of this utility model, there are at least two precast concrete slabs, and each precast concrete slab includes a double lifting ring, a precast concrete slab steel mesh, a pre-embedded reinforcing screw, a pre-embedded steel bar hook, and a precast concrete layer covering the double lifting ring, the precast concrete slab steel mesh, the pre-embedded reinforcing screw, and the pre-embedded steel bar hook.

[0008] As a preferred embodiment of this utility model, the precast concrete slabs are arranged side by side vertically or side by side horizontally.

[0009] As a preferred embodiment of this utility model, adjacent precast concrete slabs are connected by welding the reinforcing bars of the concrete slab reinforcement mesh, and the side of the precast concrete slab facing the waler is welded to the embedded reinforcing bars of the waler.

[0010] As a preferred embodiment of this utility model, the cast-in-place concrete layer includes a cast-in-place steel mesh, and the cast-in-place steel mesh passes through the pre-embedded steel hooks of the precast concrete slab to achieve the connection between the cast-in-place steel mesh and the precast concrete slab.

[0011] In a preferred embodiment of this utility model, the cast-in-place concrete layer is located between the precast concrete slab and the cast-in-place concrete formwork layer. The cast-in-place concrete formwork layer is provided with flared openings at intervals. The poured concrete entering through the flared openings is adapted to the steel mesh of the cast-in-place part and then solidifies to form the cast-in-place concrete layer.

[0012] As a preferred embodiment of this utility model, the distance between adjacent horn openings is less than or equal to 1m.

[0013] As a preferred embodiment of this utility model, the top of the precast concrete slab reinforcement mesh is provided with double lifting rings, and the precast concrete slab reinforcement mesh is internally arrayed with embedded reinforcing screws and embedded steel bar hooks.

[0014] As a preferred embodiment of this utility model, the distance between adjacent pre-embedded reinforcing screws is less than or equal to 500mm, and the pre-embedded reinforcing screws extend from the interior of the precast concrete slab to the cast-in-place concrete formwork layer.

[0015] As a preferred embodiment of this utility model, it includes a welded reinforcing screw, which is welded to the main reinforcement of the pile, and extends from the pile to the cast-in-place concrete formwork layer.

[0016] The beneficial effects of this utility model are: 1. The cast-in-place concrete layer of this utility model can form an integral whole with the precast concrete slab and piles and is located between the upper and lower walers. On the one hand, the front and rear sides of the cast-in-place concrete layer are supported by the precast concrete slab and the cast-in-place concrete formwork layer, respectively. The double-sided formwork structure is more stable, and the flatness and verticality of the surface of the cast-in-place concrete layer are better, which meets the appearance and quality requirements of permanent landscape slope structures. On the other hand, the precast concrete slab inside connects the piles and walers, and will not cause structural collapse due to stress concentration. As a result, the verticality and quality of the cast-in-place concrete panel on the outside can meet the requirements of permanent landscape slope structures.

[0017] 2. The piles of this utility model can be hidden behind the cast-in-place concrete layer, which can present a better landscape effect and improve the overall construction quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional schematic diagram of the present invention; Figure 3 This is a structural schematic diagram of the precast concrete slab of this utility model; Figure 4 This is a side view of the precast concrete slab of this utility model; Figure 5 This is a schematic diagram of the installation of multiple precast concrete slabs according to this utility model; The attached diagram is labeled as follows: 1. Waler, 2. Piles, 3. Precast concrete slab, 4. Cast-in-place concrete layer, 5. Welded reinforcing bolt, 6. Bell mouth, 7. Cast-in-place concrete formwork layer, 11. Embedded reinforcing bar of waler, 31. Double lifting ring, 32. Reinforcing mesh of precast concrete slab, 33. Embedded reinforcing bolt, 34. Embedded reinforcing hook, 35. Precast concrete layer, 41. Reinforcing mesh of cast-in-place section. Detailed Implementation

[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0020] This utility model is mainly applicable to the reinforcement of piles 2 with a spacing of 2.5m or greater. Of course, it can also be applied to the reinforcement of piles 2 with a smaller spacing.

[0021] like Figure 1 As shown, a precast pile retaining wall composite formwork reinforcement structure includes a precast concrete slab 3 and a cast-in-place concrete layer 4. The precast concrete slab 3 is arranged between adjacent pile rows 2, and the cast-in-place concrete layer 4 is arranged between the upper and lower walers 1 and located outside the pile rows 2 and the precast concrete slab 3.

[0022] When the cast-in-place concrete layer 4 is poured, its front and rear sides are supported by the precast concrete slab 3 and the cast-in-place concrete formwork layer 7, respectively.

[0023] Specifically, the cast-in-place concrete layer 4 can be cast integrally with the precast concrete slab 3 and pile 2 and located between the upper and lower walers 1. On the one hand, the front and rear sides of the cast-in-place concrete layer 4 are supported by the precast concrete slab 3 and the cast-in-place concrete formwork layer 7 respectively, making the double-sided formwork structure more stable. The flatness and verticality of the surface of the cast-in-place concrete layer 4 are better, which meets the appearance and quality requirements of the permanent landscape slope structure. On the other hand, the precast concrete slab 3 inside connects the pile 2 and the waler 1, and will not cause structural collapse due to stress concentration. As a result, the verticality and quality of the cast-in-place concrete panel located on its outer side can meet the requirements of the permanent landscape slope structure. More importantly, the pile 2 can be hidden behind the cast-in-place concrete layer 4, which can present a better landscape effect and improve the overall construction quality.

[0024] Furthermore, the specific structure of the precast concrete slab 3 will be described.

[0025] like Figures 2-4 As shown, there are at least two precast concrete slabs 3. The precast concrete slab 3 includes double lifting rings 31, precast concrete slab steel mesh 32, embedded reinforcing screws 33, embedded steel hooks 34, and a precast concrete layer 35 covering the double lifting rings 31, precast concrete slab steel mesh 32, embedded reinforcing screws 33, and embedded steel hooks 34.

[0026] Based on the distance between adjacent piles 2, an appropriate number of precast concrete slabs 3 are set. In this embodiment of the utility model, there are 4 precast concrete slabs 3. The precast concrete slabs 3 are arranged side by side vertically or side by side, which facilitates the connection between adjacent precast concrete slabs 3 and ensures the balance of internal forces of the reinforced structure.

[0027] The top of the precast concrete slab reinforcement mesh 32 is provided with double lifting rings 31. The precast concrete slab reinforcement mesh 32 is internally arrayed with pre-embedded reinforcing screws 33 and pre-embedded steel bar hooks 34. The double lifting rings 31 facilitate the movement of the precast concrete slab 3 to the pile 2 by a crane or excavator. The pre-embedded steel bar hooks 34 realize the connection between the precast concrete slab 3 and the reinforcement mesh 41 of the cast-in-place part.

[0028] The distance between adjacent pre-embedded reinforcing screws 33 is less than or equal to 500mm. The pre-embedded reinforcing screws 33 reinforce the interior of the precast concrete slab 3, thereby improving the strength of the precast concrete slab 3.

[0029] Furthermore, the connection relationship between the precast concrete slab 3 and other structures is explained.

[0030] like Figure 2 As shown, adjacent precast concrete slabs 3 are connected by welding the reinforcing bars of the precast concrete slab steel mesh 32, thereby achieving the connection between adjacent precast concrete slabs 3. The side of the precast concrete slab 3 facing the waler 1 is welded to the waler embedded reinforcing bars 11, thereby achieving the connection between the precast concrete slab 3 and the waler 1.

[0031] The cast-in-place concrete layer 4 includes a cast-in-place reinforcement mesh 41. The cast-in-place reinforcement mesh 41 passes through the pre-embedded reinforcement hooks 34 of the precast concrete slab 3 to connect the cast-in-place reinforcement mesh 41 and the precast concrete slab 3, thereby connecting the precast concrete slab 3 and the cast-in-place concrete layer 4.

[0032] Furthermore, the formation of the cast-in-place concrete layer 4 is explained in detail.

[0033] Welded reinforcing bolts 5 are welded to the main reinforcement bars of pile 2. The welded reinforcing bolts 5 extend from pile 2 to cast-in-place concrete formwork layer 7. Pre-embedded reinforcing bolts 33 extend from the inside of precast concrete slab 3 to cast-in-place concrete formwork layer 7. The pre-embedded reinforcing bolts 33 and welded reinforcing bolts 5 will abut against the cast-in-place concrete formwork layer 7 to support and reinforce it.

[0034] The cast-in-place concrete layer 4 is located between the precast concrete slab 3 and the cast-in-place concrete formwork layer 7. A funnel 6 for pouring concrete is set every 1m on the cast-in-place concrete formwork layer 7. The poured concrete entering through the funnel 6 is adapted to the steel mesh 41 of the cast-in-place part and then solidifies to form the cast-in-place concrete layer 4.

[0035] Specifically, the implementation of a prefabricated pile retaining wall composite formwork reinforcement structure includes the following steps. Step 1: Precast the precast concrete slab 3 as required, including double lifting rings 31, precast concrete slab steel mesh 32, embedded reinforcing bolts 33 and embedded steel hooks 34. The precast concrete layer 35 and precast concrete steel mesh 32 are determined according to design requirements. The size of the precast concrete slab 3 is determined according to factors such as the spacing of the piles 2. The spacing of the embedded reinforcing bolts 33 is controlled within 500mm. The precast concrete slab 3 must be cured for at least 7 days after pouring. Step 2: Level the site before the pile laying. The PC60 excavator uses a sling to lift the precast concrete slabs 3 through the double lifting rings 31. After lifting to the approximate position, manual fine-tuning is performed to position them. Step 3: Hoist the precast concrete slabs 3 in sequence, and weld the protruding steel bars of the precast concrete slab steel mesh 32 on one side to achieve mutual lateral limitation. Weld the protruding steel bars of the precast concrete slab steel mesh 32 to the waler pre-embedded reinforcing bars 11 on one side to achieve vertical limitation. Step 4: The reinforcing bars of the cast-in-place reinforcement mesh 41 pass through the pre-embedded reinforcing bar hooks 34 of the precast concrete slab 3, so that the precast concrete slab 3 and the cast-in-place reinforcement mesh 41 form a whole. Step 5: Peel the surface concrete between the two walers 1 of the pile 2 to expose the main reinforcement of the pile 2, and connect and weld the reinforcing bolts 5. Step 6: The pre-embedded reinforcing bolts 33 of the precast concrete slab 3 and the welded reinforcing bolts 5 welded to the pile 2 reinforce the cast-in-place concrete formwork layer 7. The spacing of the welded reinforcing bolts 5 is controlled within 500mm. To ensure that the concrete is vibrated in place, a flared opening 6 is set every 1 meter at the top of the cast-in-place concrete formwork layer 7.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0037] Although this document frequently uses the following reference numerals from the figures: 1. waler, 2. pile, 3. precast concrete slab, 4. cast-in-place concrete layer, 5. welded reinforcing bolt, 6. bell mouth, 7. cast-in-place concrete formwork layer, 11. waler embedded reinforcing bar, 31. double lifting ring, 32. precast concrete slab steel mesh, 33. embedded reinforcing bolt, 34. embedded steel hook, 35. precast concrete layer, 41. cast-in-place steel mesh, etc., the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A prefabricated pile retaining wall composite formwork reinforcement structure, characterized in that, It includes a precast concrete slab (3) and a cast-in-place concrete layer (4). The precast concrete slab (3) is arranged between adjacent piles (2), and the cast-in-place concrete layer (4) is arranged between the upper and lower walers (1) and located outside the piles (2) and the precast concrete slab (3).

2. The prefabricated pile retaining wall composite formwork reinforcement structure according to claim 1, characterized in that, The precast concrete slab (3) consists of at least two components, including a double lifting ring (31), a precast concrete slab steel mesh (32), a pre-embedded reinforcing screw (33), a pre-embedded steel bar hook (34), and a precast concrete layer (35) covering the double lifting ring (31), the precast concrete slab steel mesh (32), the pre-embedded reinforcing screw (33), and the pre-embedded steel bar hook (34).

3. The prefabricated pile retaining wall composite formwork reinforcement structure according to claim 2, characterized in that, The precast concrete slabs (3) are arranged side by side, either vertically or horizontally.

4. The prefabricated pile retaining wall composite formwork reinforcement structure according to claim 3, characterized in that, The adjacent precast concrete slabs (3) are connected by welding the reinforcing bars of the precast concrete slab steel mesh (32), and the side of the precast concrete slab (3) facing the waler (1) is welded to the waler embedded reinforcing bars (11).

5. A prefabricated pile retaining wall composite formwork reinforcement structure according to claim 2, characterized in that, The cast-in-place concrete layer (4) includes a cast-in-place steel mesh (41), which passes through the pre-embedded steel bar hooks (34) of the precast concrete slab (3) to achieve the connection between the cast-in-place steel mesh (41) and the precast concrete slab (3).

6. The prefabricated pile retaining wall composite formwork reinforcement structure according to claim 5, characterized in that, The cast-in-place concrete layer (4) is located between the precast concrete slab (3) and the cast-in-place concrete formwork layer (7). The cast-in-place concrete formwork layer (7) is provided with flared openings (6) at intervals. The poured concrete entering through the flared openings (6) is adapted to the steel mesh (41) of the cast-in-place part and then solidifies to form the cast-in-place concrete layer (4).

7. The prefabricated pile retaining wall composite formwork reinforcement structure according to claim 6, characterized in that, The distance between adjacent horn openings (6) is less than or equal to 1m.

8. A prefabricated pile retaining wall composite formwork reinforcement structure according to claim 2, characterized in that, The top of the precast concrete slab steel mesh (32) is provided with double lifting rings (31), and the precast concrete slab steel mesh (32) is provided with embedded reinforcing screws (33) and embedded steel hooks (34) arranged in an array inside.

9. A prefabricated pile retaining wall composite formwork reinforcement structure according to claim 8, characterized in that, The distance between adjacent pre-embedded reinforcing screws (33) is less than or equal to 500 mm, and the pre-embedded reinforcing screws (33) extend from the interior of the precast concrete slab (3) to the cast-in-place concrete formwork layer (7).

10. A prefabricated pile retaining wall composite formwork reinforcement structure according to claim 1, characterized in that, It includes a welded reinforcing screw (5), which is welded to the main reinforcement of the pile (2) and extends from the pile (2) to the cast-in-place concrete formwork layer (7).

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