A reinforcing steel anchoring structure of a prefabricated assembly type concrete component

Abstract

The utility model relates to a prefabricated reinforced anchoring structure of concrete component, including prefabricated concrete component ontology and anchoring reinforcing bar, and the anchoring cavity that goes through is preset in prefabricated concrete component ontology, and the anchoring sleeve is equipped in the anchoring cavity, and the grouting material is filled between the anchoring sleeve and anchoring cavity, the anchoring reinforcing bar includes the bending limiting section, the transition section, the anchoring section and the connecting section that connect gradually from below to above, and the lower part of bending limiting section overlaps in the lower surface of prefabricated concrete component ontology after bending, the lower end of anchoring sleeve supports on the limiting platform formed by transition section, the anchoring section is worn in the anchoring sleeve, and the thread is formed on the surface of anchoring section, and the rib thread that adapts with the thread is formed on the inner wall of anchoring sleeve. The reinforced anchoring structure is firm, and the structure is compact, shortens the anchoring length, reduces the component internal space occupation, and effectively promotes the construction efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated building technology, and in particular relates to a steel reinforcement anchorage structure for prefabricated concrete components. Background Technology

[0002] Precast concrete structures are widely used in construction projects due to their advantages such as high construction efficiency and good environmental performance. The steel reinforcement anchorage structure is the core of the connection between precast components and directly determines the overall stability of the assembled structure.

[0003] Existing steel reinforcement anchorage structures have many defects: traditional anchorage methods mostly use straight anchorage or simple bending anchorage, which results in insufficient bond between steel reinforcement and concrete, making slippage easy and affecting the structural bearing capacity; some anchorage structures are complex to process and difficult to construct.

[0004] To address the aforementioned issues, there is an urgent need to design a steel reinforcement anchoring structure for precast concrete components that provides secure anchoring and is easy to construct. Utility Model Content

[0005] The purpose of this utility model is to provide a steel reinforcement anchorage structure for precast concrete components, which can solve the problems of insufficient bonding force and complex construction of existing anchorage structures, and realize efficient assembly and stable connection of precast components.

[0006] The steel reinforcement anchoring structure of the precast assembled concrete component includes the precast concrete component body and anchoring steel bars. A through anchoring cavity is preset in the precast concrete component body, an anchoring sleeve is provided in the anchoring cavity, and grouting material is filled between the anchoring sleeve and the anchoring cavity. The anchoring reinforcement includes a bent limiting section, a transition section, an anchoring section, and a connecting section connected sequentially from bottom to top. The transition section, anchoring section, and connecting section are coaxially arranged. The lower part of the bent limiting section is bent and overlaps the lower surface of the precast concrete component body. The diameter of the transition section is larger than that of the anchoring section. The lower end of the anchoring sleeve is supported on the limiting platform formed by the transition section. The anchoring section is inserted into the anchoring sleeve and has threads formed on its surface. Ribs adapted to the threads are formed on the inner wall of the anchoring sleeve. The connecting section extends out of the precast concrete component body and is used to connect with adjacent precast components. A limiting component for restricting the axial displacement of the anchoring reinforcement is fitted at the lower part of the connecting section.

[0007] Furthermore, the anchoring sleeve includes a cylindrical body, with an anchoring hole formed in the central axial direction of the cylindrical body, and ribs formed on the inner wall of the anchoring hole.

[0008] Furthermore, the anchoring sleeve also includes two limiting discs, which are respectively fixed to both ends of the sleeve body, and the sleeve body and the limiting discs are coaxially arranged. A center hole matching the anchoring hole is opened in the center of each of the two limiting discs.

[0009] Furthermore, multiple partitions are fixed on the outer wall of the cylinder along its axial direction, and two limiting discs are fixedly connected to the upper and lower ends of the partitions respectively.

[0010] Furthermore, the limiting component includes a limiting ring, a limiting sleeve, and a connecting block. The inner surface of the limiting ring is connected to the outer wall of the limiting sleeve through several connecting blocks. The limiting ring is supported on the precast concrete component body. A through hole for the anchoring steel bar to pass through is opened in the center of the limiting sleeve. A fastening bolt is installed on the connecting block. A threaded hole adapted to the fastening bolt is opened on the anchoring steel bar.

[0011] Furthermore, the limiting ring and the limiting sleeve are coaxially arranged.

[0012] Furthermore, the connecting blocks are symmetrically distributed around the limiting sleeve.

[0013] Furthermore, multiple annular anti-slip protrusions are provided on the inner wall of the anchoring cavity.

[0014] Furthermore, the cross-section of the anti-slip protrusion is an isosceles trapezoid.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Strong anchoring: Through the threaded fit between the anchoring steel bar and the anchoring sleeve, the hook formed by the bending limit section in the anchoring steel bar, the annular anti-slip protrusion formed on the inner wall of the anchoring cavity, and the axial groove formed on the outer wall of the anchoring sleeve, the bonding force between the steel bar and the concrete and grout is greatly improved, effectively preventing slippage, and the anchoring load-bearing capacity is effectively improved compared with the traditional structure. 2. Compact structure: The design of the anchoring steel bars and anchoring sleeves is optimized, which shortens the anchoring length, reduces the internal space occupied by the components, and reduces the self-weight of the components while ensuring the anchoring effect, making it easier to transport and install; 3. Convenient construction: The limiting component enables precise positioning of the anchoring steel bars, eliminating the need for complex adjustments during assembly and effectively improving construction efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure for anchoring reinforcing bars; Figure 3 This is a schematic diagram of the anchoring sleeve. Figure 4 This is a schematic diagram of the limit component. Figure 5 This is an application state diagram of this utility model; Figure 6This is another application state diagram of this utility model.

[0017] The components in the diagram are named as follows: 1. Precast concrete component body; 2. Anchorage cavity; 3. Anchoring reinforcement; 301. Bending limiting section; 302. Transition section; 303. Anchorage section; 304. Connecting section; 4. Anchoring sleeve; 401. Cylinder; 402. Anchorage hole; 403. Rib; 404. Limiting disc; 405. Partition; 5. Limiting assembly; 501. Limiting ring; 502. Limiting sleeve; 503. Connecting block; 504. Fastening bolt; 505. Through hole; 6. Anti-slip protrusion; 7. Locking nut; 8. Connecting sleeve; 9. Connecting reinforcement. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0019] Example like Figures 1-4 As shown, this embodiment proposes a steel reinforcement anchoring structure for a precast concrete component, including a precast concrete component body 1, anchoring steel bars 3, and a limiting component 5. A through anchoring cavity 2 is pre-set inside the precast concrete component body 1, and an anchoring sleeve 4 is provided inside the anchoring cavity 2. The anchoring steel bars 3 are inserted into the anchoring sleeve 4, and grouting material is filled in the gaps between the anchoring sleeve 4 and the anchoring cavity 2, as well as between the anchoring steel bars 3 and the anchoring sleeve 4. The limiting component 5 is fixed on the anchoring steel bars 3, and the lower surface of the limiting component 5 is in contact with the upper surface of the precast concrete component body 1.

[0020] The anchoring cavity 2 is filled with high-strength grout, which fills the gap between the anchoring steel bar 3 and the anchoring sleeve 4, and between the anchoring sleeve 4 and the anchoring cavity 2, forming a reliable anchoring structure.

[0021] from Figures 1-3It can also be seen that the anchoring steel bar 3 includes a bending limiting section 301, a transition section 302, an anchoring section 303 and a connecting section 304 connected sequentially from bottom to top. The bending limiting section 301, the transition section 302, the anchoring section 303 and the connecting section 304 are coaxially arranged. The lower part of the bending limiting section 301 is bent and overlaps the lower surface of the precast concrete component body 1. The diameter of the transition section 302 is larger than that of the anchoring section 303. The lower end of the anchoring sleeve 4 is supported on the limiting platform formed by the transition section 302. The anchoring section 303 is inserted into the anchoring sleeve 4 and a thread is formed on the surface of the anchoring section 303. Ribs 403 that are adapted to the thread are formed on the inner wall of the anchoring sleeve 4. The connecting section 304 extends out of the precast concrete component body 1 and is used to connect with adjacent precast components. A limiting component 5 for limiting the axial displacement of the anchoring steel bar 3 is fitted on the lower part of the connecting section 304.

[0022] In practical implementation, the bending limiting section 301, transition section 302, anchoring section 303 and connecting section 304 are integrally formed, and the diameter of the transition section 302 is larger than that of the bending limiting section 301, anchoring section 303 and connecting section 304 by 4-6mm, forming an annular limiting platform. During anchoring, it abuts against the lower end of the anchoring sleeve 4 to achieve axial positioning of the lower part of the anchoring sleeve 4. The lower part of the bending limiting section 301 forms a radially bent hook with a bending angle of 90°. The length of the hook is 5-8 times the diameter of the bending limiting section 301. The hook formed after bending overlaps on the lower surface of the precast concrete component body 1, which can effectively improve the anchoring strength between the anchoring steel bar 3 and the precast concrete component body 1.

[0023] In this example, the structure of the anchor sleeve 4 is as follows: Figure 3 As shown, it is made of high-strength alloy steel and specifically includes a hollow cylindrical body 401. During anchoring, both ends abut against the limiting platform and limiting component 5 formed by the transition section 302 to limit its axial position. An anchoring hole 402 is opened in the central axial direction of the body 401 for inserting the anchoring steel bar 3. Ribs 403 are formed on the inner wall of the anchoring hole 402.

[0024] The ribs 403 formed on the inner wall of the anchoring hole 402 and the threads on the anchoring section 303 cooperate to form an interlocking structure, thereby effectively enhancing the anchoring bearing capacity between the anchoring steel bar 3 and the anchoring sleeve 4, avoiding axial displacement between the two, and shortening the anchoring length while ensuring the anchoring effect, reducing the internal space occupied by the component, reducing the self-weight of the component, and facilitating transportation and installation.

[0025] Furthermore, the anchoring sleeve 4 also includes two limiting discs 404, which are respectively fixed to both ends of the cylinder 401, and the cylinder 401 and the limiting discs 404 are coaxially arranged. A center hole matching the anchoring hole 402 is opened in the center of each of the two limiting discs 404.

[0026] In this example, the two limiting discs 404 at the top and bottom can accommodate the grouting material in the space formed between the two limiting discs 404, thereby effectively enhancing the synergistic effect between the anchor sleeve 4, concrete, and grouting material, preventing axial displacement between the anchor sleeve 4 and the grouting material, and ensuring the firmness of the anchorage.

[0027] Preferably, a plurality of partitions 405 are fixed on the outer wall of the cylinder 401, which are arranged along its axial direction and distributed circumferentially, and the upper and lower ends of the partitions 405 are respectively fixedly connected to two limiting disks 404.

[0028] In this example, by setting multiple spacers 405, an axial groove can be formed between two adjacent spacers 405. This groove can accommodate grout, thereby increasing the contact area between the anchor sleeve 4 and the grout, effectively enhancing the synergistic effect between the anchor sleeve 4, concrete, and grout, preventing displacement between the anchor sleeve 4 and the grout, and further ensuring the firmness of the anchorage.

[0029] See appendix Figure 4 In this example, the limiting component 5 includes a limiting ring 501, a limiting sleeve 502, and a connecting block 503. The inner surface of the limiting ring 501 is connected to the outer wall of the limiting sleeve 502 through several connecting blocks 503. The limiting ring 501 is supported on the precast concrete component body 1. A through hole 505 for the anchoring steel bar 3 to pass through is opened in the center of the limiting sleeve 502. A fastening bolt 504 is installed on the connecting block 503. A threaded hole adapted to the fastening bolt 504 is opened on the anchoring steel bar 3.

[0030] In this example, the fastening bolt 504 is fixed to the connection section 304 of the anchoring steel bar 3, which can effectively limit the axial displacement of the anchoring steel bar 3, ensure accurate positioning during assembly, and improve the construction efficiency of the anchoring steel bar 3 and the anchoring sleeve 4.

[0031] During implementation, the top of the anchor sleeve 4 fits against the bottom of the limiting sleeve 502 in the limiting assembly 5, and the bottom of the limiting ring 501 fits against the surface of the precast concrete component body 1. Besides creating threaded holes in the anchor steel bar 3, the threaded holes can also be made as through holes. When installing the limiting assembly 5, the fastening bolt 504 is passed sequentially through one side of the limiting sleeve 502, the through hole, and the other side of the limiting sleeve 502, and then locked with a nut, thus simplifying the connection and fixation between the anchor steel bar 3 and the limiting assembly 5.

[0032] Preferably, the limiting ring 501 and the limiting sleeve 502 are coaxially arranged. The connecting blocks 503 are symmetrically distributed with the limiting sleeve 502 as the center.

[0033] The coaxially arranged limiting ring 501 and limiting sleeve 502 facilitate the installation and use of the limiting component 5, while the centrally symmetrical connecting block 503 enables the limiting ring 501 and limiting sleeve 502 to have higher structural strength and tensile strength.

[0034] from Figure 1 It can also be seen that multiple annular anti-slip protrusions 6 are provided on the inner wall of the anchoring cavity 2. The cross-section of the anti-slip protrusions 6 is an isosceles trapezoid, and its top surface is set towards the center of the anchoring cavity 2.

[0035] By providing anti-slip protrusions 6 on the inner wall of the anchoring cavity 2, the adhesion between the grout and the grout is enhanced, preventing relative slippage between the grout and the anchoring cavity 2, thereby improving the anchoring strength. Specifically, the anti-slip protrusions 6 are arranged at intervals along the axial direction of the anchoring cavity 2, with a spacing of 20-30 mm, a protrusion height of 10-30 mm, and an inclination angle of 60° on both sides. This effectively increases the contact area between the inner wall of the anchoring cavity 2 and the grout, thereby increasing the adhesion force.

[0036] In specific implementation, there are two connection methods between the steel reinforcement anchorage structure and other adjacent precast concrete components described in this embodiment: one connection method is as follows Figure 5 As shown, after the connecting section 304 of the anchoring steel bar 3 penetrates another component, the precast concrete component body 1 and another adjacent precast component are locked together using the locking nut 7 to achieve the assembly connection between the two; another connection method is as follows Figure 6 As shown, the connecting section 304 of the anchoring steel bar 3 and the connecting steel bar 9 in another adjacent precast component are connected by the connecting sleeve 8, thereby realizing the assembly connection between the two.

[0037] In summary, the anchoring structure described in this embodiment not only fills the gaps between the anchoring sleeve 4 and the anchoring cavity 2, and between the anchoring steel bar 3 and the anchoring sleeve 4 with grout, but also forms a multi-anchoring system through the cooperation of the anti-slip protrusions 6, the ribs 403 and the threads on the anchoring steel bar 3, and the axial groove formed by the spacer 405 on the anchoring sleeve 4. This system not only provides strong anchoring but also, through the optimized anchoring design of the anchoring steel bar 3 and the anchoring sleeve 4, shortens the anchoring length, reduces the internal space occupied by the components, and lowers the self-weight of the anchoring components while ensuring the anchoring effect, facilitating transportation and installation. At the same time, the limiting component enables precise positioning of the anchoring steel bar, eliminating the need for complex adjustments during assembly and effectively improving construction efficiency.

Claims

1. A steel reinforcement anchorage structure for a precast concrete component, comprising a precast concrete component body (1) and anchorage steel bars (3), characterized in that: An anchoring cavity (2) is pre-set inside the precast concrete component body (1), and an anchoring sleeve (4) is provided inside the anchoring cavity (2). Grouting material is filled between the anchoring sleeve (4) and the anchoring cavity (2). The anchoring steel bar (3) includes a bending limiting section (301), a transition section (302), an anchoring section (303), and a connecting section (304) connected sequentially from bottom to top. The lower part of the bending limiting section (301) is bent and overlapped on the lower surface of the precast concrete component body (1). The diameter of the transition section (302) is larger than that of the anchoring section (303). The lower end of the anchoring sleeve (4) is supported on the limiting platform formed by the transition section (302). The anchoring section (303) is inserted into the anchoring sleeve (4) and a thread is formed on the surface of the anchoring section (303). Ribs (403) that are adapted to the thread are formed on the inner wall of the anchoring sleeve (4). The connecting section (304) extends out of the precast concrete component body (1) and is used to connect with adjacent precast components. A limiting component (5) for limiting the axial displacement of the anchoring steel bar (3) is fitted on the lower part of the connecting section (304).

2. The steel reinforcement anchorage structure for precast assembled concrete components according to claim 1, characterized in that: The anchor sleeve (4) includes a cylinder (401), an anchor hole (402) is opened in the central axis of the cylinder (401), and ribs (403) are formed on the inner wall of the anchor hole (402).

3. The steel reinforcement anchorage structure for precast assembled concrete components according to claim 2, characterized in that: The anchoring sleeve (4) also includes two limiting discs (404), which are fixed at both ends of the cylinder (401) respectively. The cylinder (401) and the limiting discs (404) are coaxially arranged, and a center hole matching the anchoring hole (402) is opened in the center of each of the two limiting discs (404).

4. The steel reinforcement anchorage structure for precast assembled concrete components according to claim 3, characterized in that: Multiple partitions (405) are fixed on the outer wall of the cylinder (401) along its axial direction, and two limiting discs (404) are fixedly connected to the upper and lower ends of the partitions (405).

5. The steel reinforcement anchorage structure for precast assembled concrete components according to claim 1, characterized in that: The limiting component (5) includes a limiting ring (501), a limiting sleeve (502), and a connecting block (503). The inner surface of the limiting ring (501) is connected to the outer wall of the limiting sleeve (502) through several connecting blocks (503). The limiting ring (501) is supported on the precast concrete component body (1). A through hole (505) for the anchoring steel bar (3) to pass through is opened in the center of the limiting sleeve (502). A fastening bolt (504) is installed on the connecting block (503). A threaded hole adapted to the fastening bolt (504) is opened on the anchoring steel bar (3).

6. The steel reinforcement anchorage structure for precast assembled concrete components according to claim 5, characterized in that: The limiting ring (501) and the limiting sleeve (502) are coaxially arranged.

7. The steel reinforcement anchorage structure for precast assembled concrete components according to claim 5, characterized in that: The connecting blocks (503) are symmetrically distributed around the limiting sleeve (502).

8. The steel reinforcement anchorage structure for precast assembled concrete components according to any one of claims 1-7, characterized in that: Multiple annular anti-slip protrusions (6) are provided on the inner wall of the anchoring cavity (2).

9. The steel reinforcement anchorage structure for precast assembled concrete components according to claim 8, characterized in that: The anti-slip protrusion (6) has an isosceles trapezoidal cross section.

Images