Civil construction pile body reinforcing device

Abstract

The utility model relates to the technical field of civil engineering and construction, concretely is civil engineering construction pile body reinforcing device. Including the pile body, the outside of pile body is inserted and is installed with reinforced cage, and reinforced cage uses steel shuttering to pour and has concrete pouring block and support foot, the outside of concrete pouring block is installed with the hoop, the top of concrete pouring block is installed with the steel sheet sheath, and the bottom between steel sheet sheath and concrete pouring block is fixed through expansion bolt, the inside of steel sheet sheath is circumferentially welded with the crosspiece, the inside of steel sheet sheath is welded with steel sheet ring, and the middle part of steel sheet sheath and the pile body is filled with filling adhesive layer. Steel sheet sheath and the pile body are connected through crosspiece, steel sheet ring and filling adhesive layer, and crosspiece and steel sheet ring form the framework, strengthen the overall stiffness and the sheath's shearing capacity, adopt the assembly type flow of pouring concrete pedestal first, install steel sheet sheath later, can reliably strengthen to stress concentration place.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering technology, specifically to a pile reinforcement device for civil construction. Background Technology

[0002] In the field of civil engineering, pile foundations are key components that bear the load of the superstructure and transfer it to the deep foundation. However, during construction or use, piles often suffer from quality problems due to various reasons, such as concrete segregation, necking, broken piles, cross-sectional weakening caused by steel corrosion, or insufficient bearing capacity of the original pile foundation due to design changes. These defects seriously threaten the safety of the overall structure, so it is necessary to effectively reinforce defective pile foundations. The main reinforcement methods for the pile body, especially the top section, include the cross-section enlargement method and the external steel encasement method. The cross-section enlargement method is a traditional and commonly used technique. It involves excavating around the original pile, planting and tying steel bars, and pouring new concrete to increase the cross-sectional area of ​​the pile body to improve the bearing capacity. However, the newly poured concrete is only wrapped around the outside of the original pile, and the increase in the bearing area at the bottom is limited. Stress concentration between the top and the original pile can easily lead to cracks. Utility Model Content

[0003] To address the above problems, the purpose of this utility model is to provide a pile reinforcement device for civil engineering construction, which solves the problem that newly poured concrete is only wrapped around the outside of the original pile, the bottom bearing area is only increased in a limited way, and stress concentration between the top and the original pile easily causes cracks.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a pile reinforcement device for civil engineering construction, comprising a pile body, a reinforcing cage inserted and installed on the outer side of the pile body, the reinforcing cage being cast with concrete blocks and supports using steel formwork, steel hoops installed on the outer side of the concrete blocks, a steel plate sheath installed on the top of the concrete blocks, and the bottom of the steel plate sheath being fixed to the concrete blocks by expansion bolts, a crossbar welded circumferentially on the inner side of the steel plate sheath, a steel plate ring welded on the inner side of the steel plate sheath, and a filling adhesive layer filling the middle part between the steel plate sheath and the pile body.

[0005] As a further improvement to the above technical solution: a roughened layer one is provided on the outer side of the pile body, and a cement slurry layer is coated on the outer side of the roughened layer one. A rebar anchoring adhesive hole is opened on the pile body near the roughened layer one, and a roughened layer two is pre-treated on the pile body near the top of the roughened layer one.

[0006] As a further improvement to the above technical solution: the steel cage and the pile body are connected through the anchoring adhesive hole.

[0007] As a further improvement to the above technical solution: the concrete casting block adopts a double cone design.

[0008] To ensure strength:

[0009] As a further improvement to the above technical solution: the outer circumferential side of the steel plate sheath is provided with ribs.

[0010] The beneficial effects of this improvement are: the circumferentially arranged ribs can strengthen the steel plate sheath and increase the structural strength of the steel plate sheath.

[0011] To facilitate the connection between the steel plate sheath and the pile body:

[0012] As a further improvement to the above technical solution: the crossbars are evenly distributed on the inner side of the steel plate sheath, and the ends of the crossbars are tapered.

[0013] As a further improvement to the above technical solution: the steel plate sheath is arranged in an arc shape, and the number of steel plate sheaths is three.

[0014] As a further improvement to the above technical solution: the steel plate sheaths are spliced ​​together by array bolts.

[0015] The beneficial effects of this improvement are as follows: the steel plate sheath is connected to the pile body through a crossbar, a steel plate ring and a filling adhesive layer. The crossbar and the steel plate ring form a skeleton, which enhances the overall rigidity and shear resistance of the sheath. Using bolt splicing makes it easy to install the steel plate sheath on the outside of the pile body, reducing the construction difficulty of the device.

[0016] The beneficial effects of this utility model are as follows:

[0017] First, during the use of the device, the support legs support the concrete pouring blocks, providing a bench-like support for the reinforced structure, resisting settlement, and significantly improving the vertical bearing capacity.

[0018] 2. The steel plate sheath is connected to the pile body by crossbars, steel plate rings and filling adhesive layer. The crossbars and steel plate rings form a skeleton, which enhances the overall rigidity and shear resistance of the sheath. The assembly process of first pouring concrete base and then installing steel plate sheath can reliably strengthen stress concentration points. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall isometric structure.

[0020] Figure 2 This is an enlarged isometric schematic diagram of the steel cage.

[0021] Figure 3 This is an enlarged isometric structural diagram of the steel plate sheath.

[0022] Figure 4 This is a schematic diagram of the overall main view structure.

[0023] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0024] In the diagram: 1. Pile body; 11. Roughening layer one; 12. Cement grout layer; 13. Rebar anchoring hole; 14. Roughening layer two; 2. Concrete casting block; 21. Rebar cage; 22. Steel hoop; 23. Support leg; 3. Steel plate sleeve; 31. Expansion bolt; 32. Crossbar; 33. Steel plate ring; 34. Filling adhesive layer. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0026] like Figure 1-5 As shown, a pile reinforcement device for civil engineering construction includes a pile body 1. A reinforcing cage 21 is inserted and installed on the outer side of the pile body 1. The reinforcing cage 21 is cast with a concrete block 2 and a support 23 using a steel template. A steel hoop 22 is installed on the outer side of the concrete block 2. A steel plate sleeve 3 is installed on the top of the concrete block 2, and the bottom of the steel plate sleeve 3 is fixed to the concrete block 2 by expansion bolts 31. A crossbar 32 is welded circumferentially on the inner side of the steel plate sleeve 3. A steel plate ring 33 is welded on the inner side of the steel plate sleeve 3. A filling adhesive layer 34 is filled in the middle of the steel plate sleeve 3 and the pile body 1. A roughening layer 11 is provided on the outer side of the pile body 1, and a cement slurry layer 12 is coated on the outer side of the roughening layer 11. A rebar anchoring adhesive hole 13 is opened on the pile body 1 near the roughening layer 11. A pre-treated area is formed on the pile body 1 above the roughening layer 11. In the second layer 14, the reinforcing cage 21 is connected to the pile body 1 through the anchoring adhesive hole 13. The concrete casting block 2 adopts a double cone design. The steel plate sheath 3 can be strengthened by the circumferentially arranged ribs, increasing the structural strength of the steel plate sheath 3. The outer circumferential ribs of the steel plate sheath 3 are arranged. The crossbars 32 are evenly distributed on the inner side of the steel plate sheath 3, and the ends of the crossbars 32 are tapered. The steel plate sheath 3 is arc-shaped, and there are three steel plate sheaths 3. The steel plate sheaths 3 are spliced ​​together by array bolts. The steel plate sheath 3 is connected to the pile body 1 by the crossbars 32, the steel plate rings 33 and the filling adhesive layer 34. The crossbars 32 and the steel plate rings 33 form a skeleton, which enhances the overall rigidity and shear resistance of the sheath. The bolt splicing can facilitate the installation of the steel plate sheath 3 on the outside of the pile body 1 and reduce the construction difficulty of the device.

[0027] The working principle of this utility model is as follows: When using this device, the soil around the pile is excavated to form an operating pit. After the pit is formed, the area outside the pile body 1 that needs to be reinforced is roughened to form roughened layer 11 and roughened layer 2 14. After cleaning, a cement slurry layer 12 is applied to the outside of roughened layer 11. Blind holes are drilled at the position of roughened layer 11 and filled with adhesive to form anchoring holes 13. After binding the reinforcing cage 21, the reinforcing cage 21 is installed on the outside of the pile body 1. The steel formwork is combined to form a double cone structure. Concrete is injected into the steel formwork and cured to form a concrete block 2 and support 23. The steel hoop 22 is installed on the outside of the concrete block 2 and expansion bolts 31 are used to secure it. The steel plate sheath 3 is installed on top of the concrete block 2. After installation, the filling adhesive layer 34 is injected. After the filling adhesive layer 34 solidifies, the strength is tested, and the foundation pit is backfilled to complete the construction. During the use of the device, the support leg 23 supports the concrete block 2, providing a bench leg for the reinforced structure, resisting settlement, and significantly improving the vertical bearing capacity. The steel plate sheath 3 is connected to the pile body 1 through the crossbar 32, the steel plate ring 33 and the filling adhesive layer 34. The crossbar 32 and the steel plate ring 33 form a skeleton, which enhances the overall rigidity and shear resistance of the sheath. The prefabricated process of first pouring the concrete base and then installing the steel plate sheath 3 can reliably strengthen the stress concentration points.

[0028] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A pile reinforcement device for civil engineering construction, characterized in that: The pile includes a pile body (1), a reinforcing cage (21) is inserted and installed on the outside of the pile body (1), and the reinforcing cage (21) is cast with a concrete block (2) and a support (23) using a steel template. A steel hoop (22) is installed on the outside of the concrete block (2), a steel plate sleeve (3) is installed on the top of the concrete block (2), and the bottom of the steel plate sleeve (3) is fixed to the concrete block (2) by an expansion bolt (31). A crossbar (32) is welded circumferentially on the inner side of the steel plate sleeve (3), a steel plate ring (33) is welded on the inner side of the steel plate sleeve (3), and a filling adhesive layer (34) is filled between the steel plate sleeve (3) and the pile body (1).

2. The pile reinforcement device for civil engineering construction according to claim 1, characterized in that: The pile body (1) is provided with a roughened layer one (11) on the outside, and the roughened layer one (11) is coated with a cement slurry layer (12). The pile body (1) is provided with a rebar adhesive hole (13) near the roughened layer one (11). The pile body (1) is pre-treated with a roughened layer two (14) above the roughened layer one (11).

3. The pile reinforcement device for civil engineering construction according to claim 1, characterized in that: The steel cage (21) is connected to the pile body (1) through the anchoring adhesive hole (13).

4. The pile reinforcement device for civil engineering construction according to claim 1, characterized in that: The concrete casting block (2) is set with a double cone shape.

5. The pile reinforcement device for civil engineering construction according to claim 1, characterized in that: The outer circumferential surface of the steel plate sheath (3) is provided with ribs.

6. The pile reinforcement device for civil engineering construction according to claim 1, characterized in that: The crossbars (32) are evenly distributed on the inner side of the steel plate sheath (3), and the ends of the crossbars (32) are tapered.

7. The pile reinforcement device for civil engineering construction according to claim 1, characterized in that: The steel plate sheath (3) is arranged in an arc shape, and there are three steel plate sheaths (3).

8. The pile reinforcement device for civil engineering construction according to claim 1, characterized in that: The steel plate sheath (3) is spliced ​​with the steel plate sheath (3) by array bolts.

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