UHPC reinforced pile foundation

Abstract

The utility model relates to the technical field of reinforcing pile foundations, and discloses a UHPC reinforcing pile foundation which comprises two circular steel protective shells, the front side and the rear side of the circular steel protective shell on the left side are both rotationally connected with two rotating columns, the outer walls of the rotating columns are fixedly connected with locking plates, one sides of the locking plates are in threaded connection with bolts, and the other sides of the locking plates are in threaded connection with bolts. Two locking grooves are formed in each of the front side and the rear side of the round steel protection shell on the right side, threaded grooves are formed in the inner walls of the front sides and the rear sides of the round steel protection shells, the adjacent sides of the multiple locking plates are clamped with the corresponding locking grooves correspondingly, and one ends of the multiple bolts are in threaded connection with the corresponding threaded grooves correspondingly. According to the utility model, the two circular steel protective shells are mounted, the two circular steel protective shells are statically pressed outside the pile foundation, the circular reinforcement cage is placed in the cavities of the circular steel protective shells and the pile foundation column, and the ultra-high performance concrete is poured, so that the conditions that the construction technical difficulty is higher and the reinforcement effect is poor are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of reinforced pile foundations, in particular to a UHPC reinforced pile foundation. Background Technique

[0002] Pile foundations are common foundation works in construction projects, mainly used to increase the bearing capacity of the foundation or improve the foundation stability. It transfers the weight of buildings or other structures to deeper soil layers or rocks by driving or grouting specific types of piles underground. The single-column pier structure in urban bridges can no longer meet the current load requirements. In the calculation of anti-overturning bearing capacity, the bearing capacity and durability of the pile foundation structures of some single-column piers are reduced, thus threatening the service safety of the superstructure and requiring timely repair and reinforcement treatment.

[0003] After retrieval, the Chinese patent publication number is: CN213267974U, which discloses a bearing platform, several vertical piles arranged vertically, and a limiting mechanism for limiting the vertical piles. The upper ends of several said vertical piles are fixed to the lower end of the bearing platform. A placement groove is opened at the upper end of the vertical pile. The limiting mechanism includes an extension column for limiting the vertical pile, a rotation-limiting block for limiting the rotation of the extension column, and a rotating cylinder. A sliding hole is opened on the side wall of the placement groove close to the axis of the vertical pile. The extension column is inserted into the sliding hole. Two rotation-limiting grooves are circumferentially opened on the side wall of the sliding hole. A driving groove penetrates through the side wall of the extension column. The rotation-limiting block is inserted into the driving groove. The two ends of the rotation-limiting block are respectively placed in the rotation-limiting grooves. A through hole coinciding with the axis of the sliding hole penetrates through the side wall of the placement groove far from the axis of the vertical pile. The rotating cylinder is rotatably connected to the side wall of the placement groove close to the axis of the vertical pile and the axis coincides with the axis of the extension column. The extension column passes through the rotating cylinder and the two are threadedly connected. This application has the effect of increasing the stability of the pile foundation. However, in actual use, the device laterally reinforces the pile foundation through multiple transverse cones. However, after long-term use, it is more inconvenient to reinforce and repair the pile foundation, resulting in greater construction technical difficulty and poor reinforcement effect. Content of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a UHPC reinforced pile foundation, aiming to improve the problem that it is more inconvenient to reinforce and repair the pile foundation after long-term use, resulting in greater construction technical difficulty and poor reinforcement effect.

[0005] To achieve the above object, the utility model adopts the following technical solutions: A UHPC-reinforced pile foundation includes two circular steel casings. Both the front and rear sides of the left circular steel casing are rotatably connected with two rotating columns. A locking plate is fixedly connected to the outer wall of the rotating column. A bolt is threadedly connected to one side of the locking plate. Two locking grooves are respectively opened on the front and rear sides of the right circular steel casing. Threaded grooves are respectively opened on the inner walls of the front and rear sides of the circular steel casing. The adjacent sides of the plurality of locking plates are respectively engaged with the corresponding locking grooves. One ends of the plurality of bolts are respectively threadedly connected to the corresponding threaded grooves. A circular steel cage is placed between the adjacent sides of the two circular steel casings. A pile foundation column is arranged inside the circular steel cage. A cleaning mechanism is arranged at the bottom of the outer wall of the circular steel cage.

[0006] Through the above technical solutions: The circular steel casings can be assembled, and then the cavity formed between the pile foundation column and the circular steel casings can be flushed, so that the circular steel cage can be clamped and installed, and then ultra-high performance concrete is poured as the increased structural section of the pile foundation column, thereby improving the convenient operation of the reinforcement and repair treatment and avoiding the situation of greater construction technical difficulty and poor reinforcement effect.

[0007] As a further description of the above technical solutions:

[0008] The cleaning mechanism includes a plurality of return springs. The adjacent sides of the plurality of return springs are respectively fixedly connected to the bottom of the outer wall of the circular steel cage. Arc grooves are respectively opened at the left and right bottoms of the circular steel cage. The far ends of the plurality of return springs are respectively fixedly connected with cleaning rings. Sliding plates are respectively fixedly connected to the left and right sides of the bottom wall of the circular steel cage. Chute grooves are respectively opened in the middle of the adjacent sides of the two circular steel casings. The far sides of the two sliding plates are respectively slidably connected to the corresponding chute grooves.

[0009] Through the above technical solutions: When the circular steel cage moves downward, the cleaning rings can clean and absorb water on the inner walls of the circular steel casings. The return springs improve the cleaning effect of the cleaning rings. With the sliding connection between the sliding plates and the chute grooves, the circular steel cage is more stable when descending and installed, reducing the shaking.

[0010] As a further description of the above technical solutions:

[0011] Sealing plates are respectively fixedly connected to the front and rear ends on the left side of the right circular steel casing. Sealing grooves are respectively opened at the front and rear ends on the right side of the left circular steel casing. The left sides of the two sealing plates are respectively engaged with the corresponding sealing grooves.

[0012] Through the above technical solutions: The sealing effect during cement pouring can be improved.

[0013] As a further description of the above technical solutions:

[0014] The front and rear sides of the inner wall top of the circular steel cage are fixedly connected with fixing plates, the front and rear sides of the top wall of the pile foundation column are provided with engaging grooves, and the bottoms of the fixing plates are respectively engaged with the corresponding engaging grooves.

[0015] Through the above technical solution, the stabilizing effect of the circular steel cage on the pile foundation column is improved.

[0016] As a further description of the above technical solution:

[0017] The middle parts of the plurality of bolts are fixedly connected with rubber rings, and the outer walls of the plurality of rubber rings are designed to be smooth.

[0018] Through the above technical solution, the damage caused by the bolts to the outer wall of the circular steel shell is reduced.

[0019] As a further description of the above technical solution:

[0020] The bottom walls of the two circular steel protective shells are fixedly connected with blocking rings, and adjacent sides of the two blocking rings are provided with grooves.

[0021] Through the above technical solution, the sealing performance of the circular steel casing on the bottom of the pile foundation column is improved.

[0022] As a further description of the above technical solution:

[0023] A cone is fixedly connected to the bottom wall of the pile foundation column, and the bottom of the cone is lower than the bottoms of the two circular steel casings.

[0024] The above technical solution makes it easier to fix and break the ground on the pile foundation column.

[0025] As a further description of the above technical solution:

[0026] The outer walls of the plurality of bolts are fixedly connected with a plurality of fixing blocks, and the shapes of the plurality of fixing blocks are all square in design.

[0027] Through the above technical solution, it is easy to rotate the bolt.

[0028] The utility model has the following beneficial effects:

[0029] 1. In the utility model, the locking plate is rotated to engage with the locking groove, and then fixed with bolts and threaded grooves, so that the two circular steel shells can be assembled. After the assembly is completed, static pressure is applied outside the pile foundation, and mud is removed between the pile foundation column and the circular steel shell to form a cavity. The circular steel cage is placed in the cavity, and ultra-high performance concrete is poured as the increased structural cross-section of the pile foundation column, thereby avoiding the situation where the construction technology is more difficult and the reinforcement effect is poor.

[0030] 2. In the present utility model, through the downward displacement of the circular steel reinforcement cage, the cleaning ring can clean and absorb moisture from the inner wall of the circular steel casing. Furthermore, under the elastic extrusion of the return spring, the cleaning effect of the cleaning ring is improved. Through the sliding connection between the sliding plate and the sliding groove, the downward displacement of the circular steel reinforcement cage is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a three-dimensional view of a UHPC-reinforced pile foundation proposed by the present utility model;

[0032] Figure 2 is an exploded view of the circular steel casing of a UHPC-reinforced pile foundation proposed by the present utility model;

[0033] Figure 3 is a schematic diagram of the cleaning mechanism of a UHPC-reinforced pile foundation proposed by the present utility model.

[0034] LEGEND DESCRIPTION:

[0035] 1. Circular steel casing; 2. Cleaning mechanism; 201. Return spring; 202. Arc groove; 203. Cleaning ring; 204. Sliding plate; 205. Sliding groove; 3. Rotating column; 4. Locking plate; 5. Bolt; 6. Locking groove; 7. Threaded groove; 8. Pile foundation column; 9. Circular steel reinforcement cage; 10. Fixed plate; 11. Engaging groove; 12. Sealing plate; 13. Sealing groove; 14. Plug ring; 15. Vertical cone; 16. Rubber ring; 17. Fixed block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] 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 of 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.

[0037] Refer to Figure 1 and Figure 2, an embodiment provided by the present utility model: a UHPC-reinforced pile foundation, including two circular steel casings 1. Both the front and rear sides of the left circular steel casing 1 are rotatably connected with two rotating columns 3. The outer wall of the rotating column 3 is fixedly connected with a locking plate 4. One side of the locking plate 4 is threadedly connected with a bolt 5. Both the front and rear sides of the right circular steel casing 1 are provided with two locking grooves 6. The inner walls of the front and rear sides of the circular steel casing 1 are provided with threaded grooves 7. The adjacent sides of multiple locking plates 4 are respectively engaged with the corresponding locking grooves 6. One ends of multiple bolts 5 are respectively threadedly connected with the corresponding threaded grooves 7. A circular steel reinforcement cage 9 is placed between the adjacent sides of the two circular steel casings 1. A pile foundation column 8 is arranged inside the circular steel reinforcement cage 9; the outer walls of multiple bolts 5 are all fixedly connected with multiple fixing blocks 17, and the outer shapes of multiple fixing blocks 17 are all designed in a square shape;

[0038] Specifically, by rotating the locking plate 4, it rotates under the drive of the rotating column 3, so that it can be tightly engaged with the locking groove 6. By rotating the bolt 5, the threaded groove 7 is threadedly connected with it, and the two circular steel casings 1 can complete the assembly. After the two circular steel casings 1 are assembled, they are statically pressed outside the pile foundation column 8. Through the flushing action of water, the soil between the circular steel casing 1 and the pile foundation column 8 can be removed, so as to form a cavity between them. The circular steel reinforcement cage 9 is installed on the outer wall of the pile foundation column 8 along the vertical direction. By pouring ultra-high performance concrete as an additional structural section of the pile foundation column 8, the pile foundation column 8 can be effectively repaired and reinforced, avoiding the problems of large construction technical difficulty and poor reinforcement effect in the traditional construction. Through multiple fixing blocks 17, the anti-slip effect of the bolt 5 is improved.

[0039] Referring to Figure 1 and Figure 3 , a cleaning mechanism 2 is arranged at the bottom of the outer wall of the circular steel reinforcement cage 9. The cleaning mechanism 2 includes multiple return springs 201. The adjacent sides of multiple return springs 201 are respectively fixedly connected to the bottom of the outer wall of the circular steel reinforcement cage 9. Arc grooves 202 are respectively opened at the left and right bottoms of the circular steel reinforcement cage 9. The far ends of multiple return springs 201 are respectively fixedly connected with cleaning rings 203. Slide plates 204 are respectively fixedly connected to the left and right sides of the bottom wall of the circular steel reinforcement cage 9. Slide grooves 205 are respectively opened in the middle of the adjacent sides of the two circular steel casings 1. The far sides of the two slide plates 204 are respectively slidably connected with the corresponding slide grooves 205;

[0040] Specifically, by displacing the circular steel reinforcement cage 8 downward, the cleaning ring 203 fixed by the return spring 201 will also be displaced together, which can clean the inner wall of the circular steel casing 1 and absorb the moisture therein, thus effectively reducing the moisture content. Under the elastic force of the return spring 201, the cleaning ring 203 can closely adhere to the inner wall of the circular steel casing, further improving the cleaning effect. The circular steel reinforcement cage 9 slides inside the chute 205 through the sliding plate 204, making it more stable during the displacement and descent process, and ultimately effectively avoiding the influence of excessive moisture on the cement casting process, so as to ensure that the cleaning ring 203 can effectively carry out the cleaning work.

[0041] Refer to Figure 2 and Figure 3 , at the front and rear ends of the left side of the right circular steel casing 1, sealing plates 12 are fixedly connected respectively. At the front and rear ends of the right side of the left circular steel casing 1, sealing grooves 13 are provided. The left sides of the two sealing plates 12 are respectively engaged with the corresponding sealing grooves 13. At the front and rear sides of the top of the inner wall of the circular steel reinforcement cage 9, fixing plates 10 are fixedly connected respectively. At the front and rear sides of the top wall of the pile foundation column 8, engaging grooves 11 are provided. The bottoms of the fixing plates 10 are respectively engaged with the corresponding engaging grooves 11. In the middle of multiple bolts 5, rubber rings 16 are fixedly connected respectively. The outer walls of multiple rubber rings 16 are designed to be smooth;

[0042] Specifically, by the left sides of the two sealing plates 12 being respectively engaged with the corresponding sealing grooves 13, the sealing performance of the two circular steel casings 1 during casting is improved. By the bottoms of the fixing plates 10 being respectively engaged with the corresponding engaging grooves 11, the stability of the pile foundation column 8 is improved. By the rubber rings 16, the rotational damage of the bolts 5 is reduced.

[0043] Refer to Figure 1 , at the bottom walls of the two circular steel casings 1, blocking rings 14 are fixedly connected respectively. On the adjacent sides of the two blocking rings 14, grooves are provided. At the bottom wall of the pile foundation column 8, a vertical cone 15 is fixedly connected. The bottom of the vertical cone 15 is lower than the bottom of the two circular steel casings 1;

[0044] Specifically, by the blocking rings 14, the sealing performance between the two circular steel casings 1 and the bottom of the pile foundation column 8 is improved. By the vertical cone 15, the ground-breaking fixing effect of the pile foundation column 8 during fixing is improved.

[0045] Working principle: When starting to use, by rotating the locking plate 4 under the rotation of the rotating column 3, it is engaged with the locking groove 6. Then, by rotating the bolt 5, its threaded connection with the threaded groove 7 is achieved, enabling the assembly and fixation of the two circular steel sheaths 1. The two assembled circular steel sheaths 1 are statically pressed outside the pile foundation column 8, and the position between the circular steel sheath 1 and the pile foundation column 8 is washed with water to remove mud, forming a cavity. Then, the circular steel reinforcement cage 9 is installed downward on the outer wall of the pile foundation column 8, and ultra-high performance concrete is poured as the increased structural section of the pile foundation column 8, thus completing the repair and reinforcement of the pile foundation column 8, avoiding the situation of greater construction technical difficulty and poor reinforcement effect. And due to the downward displacement of the circular steel reinforcement cage 8, the cleaning ring 203 fixed by the return spring 201 is displaced together, thereby cleaning the inner wall of the circular steel sheath 1 and absorbing moisture, reducing the moisture content. At the same time, under the elastic force of the return spring 201, the cleaning ring 203 can closely adhere to the inner wall of the circular steel sheath for cleaning, thus improving the cleaning effect. By sliding the sliding plate 204 inside the sliding groove 205, the circular steel reinforcement cage 9 is more stable when displaced downward, ultimately avoiding the situation where excessive moisture affects the cement casting.

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A UHPC-reinforced pile foundation, comprising two circular steel casings (1), characterized in that: On the front and back sides of the circular steel casing (1) on the left side, two rotating columns (3) are rotatably connected. A locking plate (4) is fixedly connected to the outer wall of the rotating column (3). A bolt (5) is threadedly connected to one side of the locking plate (4). On the front and back sides of the circular steel casing (1) on the right side, two locking grooves (6) are provided. Threaded grooves (7) are provided on the inner walls of the front and back sides of the circular steel casing (1). The adjacent sides of multiple locking plates (4) are respectively engaged with the corresponding locking grooves (6). One ends of multiple bolts (5) are respectively threadedly connected to the corresponding threaded grooves (7). A circular steel cage (9) is placed between two adjacent circular steel casings (1). A pile foundation column (8) is arranged inside the circular steel cage (9). A cleaning mechanism (2) is arranged at the bottom of the outer wall of the circular steel cage (9).

2. The UHPC-reinforced pile foundation according to claim 1, wherein: The cleaning mechanism (2) includes multiple reset springs (201). The adjacent sides of multiple reset springs (201) are respectively fixedly connected to the bottom of the outer wall of the circular steel cage (9). Arc grooves (202) are provided at the bottom of the left and right sides of the circular steel cage (9). Cleaning rings (203) are fixedly connected to the far ends of multiple reset springs (201). Sliding plates (204) are fixedly connected to the left and right sides of the bottom wall of the circular steel cage (9). Sliding grooves (205) are provided in the middle of the adjacent sides of two circular steel casings (1). The far sides of two sliding plates (204) are respectively slidably connected to the corresponding sliding grooves (205).

3. The UHPC-reinforced pile foundation according to claim 1, wherein: Sealing plates (12) are fixedly connected to the front and rear ends of the left side of the circular steel casing (1) on the right side. Sealing grooves (13) are provided at the front and rear ends of the right side of the circular steel casing (1) on the left side. The left sides of two sealing plates (12) are respectively engaged with the corresponding sealing grooves (13).

4. A UHPC-reinforced pile foundation according to claim 1, characterized in that: Fixing plates (10) are fixedly connected to the front and rear sides of the top inner wall of the circular steel cage (9). Engaging grooves (11) are provided at the front and rear sides of the top wall of the pile foundation column (8). The bottoms of the fixing plates (10) are respectively engaged with the corresponding engaging grooves (11).

5. The UHPC-reinforced pile foundation according to claim 1, wherein: Rubber rings (16) are fixedly connected to the middle parts of multiple bolts (5). The outer walls of multiple rubber rings (16) are designed to be smooth.

6. The UHPC-reinforced pile foundation according to claim 1, characterized in that: Blocking rings (14) are fixedly connected to the bottom walls of two circular steel casings (1). Grooves are provided on the adjacent sides of two blocking rings (14).

7. A UHPC-reinforced pile foundation according to claim 1, characterized in that: A vertical cone (15) is fixedly connected to the bottom wall of the pile foundation column (8). The bottom of the vertical cone (15) is lower than the bottoms of two circular steel casings (1).

8. A UHPC-reinforced pile foundation according to claim 1, characterized in that: Multiple fixing blocks (17) are fixedly connected to the outer walls of multiple bolts (5). The outer shapes of multiple fixing blocks (17) are designed to be square.

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