Connecting structure, prefabricated wall and construction method for connecting prefabricated wall

Abstract

The invention relates to the technical field of building connecting structures, in particular to a connecting structure, a prefabricated wall and a construction method for connecting the prefabricated wall. A connecting structure comprises a first prefabricated wall and a second prefabricated wall. A connecting groove is formed in the end face of the first prefabricated wall and divides the first prefabricated wall into two opposite extension parts, and the extension parts are provided with opposite extension holes; two opposite plate-shaped inner extending parts are arranged at the end of the second prefabricated wall, the inner extending parts can be inserted into the outer extending parts, and the inner extending parts are provided with opposite inner extending holes; the inner extending hole and the outer extending hole can be coaxial. By means of the jacking device and the adjustable connecting structure, the problem that assembly type prefabricated parts are unstable during splicing is effectively solved, firm connection between prefabricated walls is ensured, and the high-precision and high-stability requirements of a building structure are met.

Description

Technical Field

[0001] The present application relates to the technical field of building connection structures, and in particular to a connection structure, a prefabricated wall, and a construction method for connecting prefabricated walls. Background Art

[0002] Some buildings are constructed using a combination of prefabricated and cast-in-place walls, following four key steps: prefabrication, installation, cast-in-place connections, and subsequent processing. Prefabricated components are manufactured by cutting and processing prefabricated wall panels in the factory according to design requirements. Modular lifting beams are used to lift the prefabricated walls into place in stages. Formwork is used to install diagonal braces to enhance stability, and adjustable components are used to fine-tune the position of the wall panels to ensure integrity. The prefabricated walls are installed and fixed on-site; the prefabricated panels are connected through on-site pouring. Subsequent processing completes the wall construction.

[0003] Existing precast walls, such as Figure 1 As shown, a number of straight steel bars 18 extend from both ends. When the two prefabricated walls 2 are connected horizontally, it is necessary to manually bend or cut the straight steel bars 18 extending from the two prefabricated walls 2 to complete the binding, and then mold and cast them to complete the horizontal connection of the two prefabricated walls 2.

[0004] In these technologies, due to factors such as potential precision errors during the production of prefabricated components, the construction site, installation conditions, and the skill level of the construction personnel, the connections between components often fail to meet the expected stability and precision requirements during the splicing process. This not only affects the safety and performance of the overall building structure, but also increases the cost of subsequent maintenance and reinforcement, and even shortens the building's service life. Therefore, improving the splicing stability of prefabricated components and ensuring connection accuracy and safety are technical issues that need to be urgently addressed in the current construction field. Summary of the Invention

[0005] In order to improve the accuracy and stability of building structures, in a first aspect, the present application provides a connection structure, which is implemented using the following technical solution.

[0006] A connection structure includes a first prefabricated wall and a second prefabricated wall; the end face of the first prefabricated wall is provided with a connection groove, which divides the first prefabricated wall into two opposite outer extensions, and the outer extensions have oppositely arranged outer extension holes; the end of the second prefabricated wall is provided with two opposite plate-shaped inner extensions, and the inner extensions can be inserted into the outer extensions, and the inner extensions have oppositely arranged inner extension holes; the inner extension holes and the outer extension holes can be coaxial.

[0007] By adopting the above technical solution, the first prefabricated wall and the second prefabricated wall can be plugged in and fixed by bolts, thereby achieving the connection of the two prefabricated walls.

[0008] Preferably, a positioning slot is provided at the bottom of the connecting groove, and an inwardly extending U-shaped steel bar is extended from the end of the second prefabricated wall close to the first prefabricated wall. The U-shape of the inwardly extending U-shaped steel bar can be inserted into a tightening frame, and the bottom of the tightening frame can be inserted into the positioning slot.

[0009] By adopting the above technical solution, the lower part of the tightening frame positions the outer extension, and the upper part of the tightening frame inserts the inner extension U-shaped steel bar to fix the inner extension, thereby tightening the inner extension and the outer extension, so that the first prefabricated wall and the second prefabricated wall are close to each other.

[0010] Preferably, a positioning hole is provided on the side wall of the tightening frame close to the inner hole, and the positioning hole and the outer hole may be coaxial.

[0011] By adopting the above technical solution, the extension part and the tightening frame are positioned by the screw passing through the extension hole and the positioning hole.

[0012] Preferably, the tightening frame is a U-shaped frame with one end open, the open end facing the first prefabricated panel, the tightening block can be inserted into the tightening frame, and the side of the tightening block facing the positioning hole is a sloped surface.

[0013] By adopting the above technical solution, as the screw continues to rotate, the slope surface contacts the end of the screw, so that the tightening block continues to pull the inner extension part closer to the outer extension part.

[0014] Preferably, the tightening block is provided with a protruding block near the side wall of the first prefabricated wall, and the protruding block abuts against the inner-extending U-shaped steel bar.

[0015] By adopting the above technical solution, the protruding block is made of soft material, which can protect the inner extended U-shaped steel bar and the tightening block.

[0016] Preferably, the side wall of the first prefabricated wall close to the connecting groove is provided with an extended U-shaped steel bar extending into the connecting groove, and the extended U-shaped steel bar and the inner extended U-shaped steel bar are staggered.

[0017] By adopting the above technical solution, the inner extension part is further pulled toward the outer extension part, which provides more space and makes the first prefabricated wall and the second prefabricated wall more tightly connected.

[0018] Preferably, the length of the protruding block is smaller than the width of the inner U-shaped steel bar and smaller than the width of the outer U-shaped steel bar.

[0019] By adopting the above technical solution, the inner U-shaped steel bar and the outer U-shaped steel bar are pulled to the extreme position, and the U-shaped parts of the inner U-shaped steel bar and the outer U-shaped steel bar are overlapped, and finally the length of the protruding block is less than the width of the inner U-shaped steel bar and less than the width of the outer U-shaped steel bar. Long steel bars are vertically inserted into the overlapping parts at both ends of the protruding block, and the position of the long steel bars is at the end of the protruding block.

[0020] Preferably, a cylindrical groove is provided in the tightening block.

[0021] By adopting the above technical solution, an eccentric column can be inserted into the cylindrical groove. By vibrating the eccentric column, the concrete can be vibrated after pouring, thereby reducing bubbles and voids, improving the density and uniformity of the concrete, and further improving the overall quality of the component.

[0022] On the other hand, the present application provides a prefabricated wall, which is implemented through the following technical solution.

[0023] A prefabricated wall comprises the aforementioned connection structure when connected, wherein one end of a single prefabricated wall has the structure of the outer extension part, and the other end has the structure of the inner extension part.

[0024] By adopting the above technical solution, a prefabricated wall with high precision and high stability of the building structure is obtained.

[0025] On the other hand, the present application provides a construction method for connecting prefabricated walls, which is achieved through the following technical solution.

[0026] A construction method for connecting prefabricated walls comprises the following steps: (1) Horizontal positioning: Arrange the two prefabricated panels horizontally, with the outer extension and the inner extension facing each other, and insert the inner extension into the outer extension in the horizontal direction; (2) Horizontal tightening: Insert the top tightening frame into the inner extension U-shaped steel bar of the inner extension from the top. When inserted to the bottom, insert the bottom of the top tightening frame into the positioning slot at the bottom of the connecting groove of the outer extension; (3) Position the outer extension and the top tightening frame, and then pull the inner extension closer: insert the long-axis screw from the outer extension hole, pass through the inner extension hole and the positioning hole and reach the slope surface of the top tightening block, and continue to rotate the long-axis screw to move the top tightening block away from the top tightening frame; (4) When the inner U-shaped steel bar and the outer U-shaped steel bar overlap, insert the long steel bar vertically to position the steel bar: make the U-shaped parts of the inner U-shaped steel bar and the outer U-shaped steel bar overlap, and insert the long steel bar vertically into the overlapping part.

[0027] By adopting the above technical solution, a tightening frame is used to insert the inner U-shaped steel bar into the inner extension part, and at the same time, it is inserted into the positioning slot at the bottom of the connection groove of the outer extension part, so that the two prefabricated walls are tightly plugged in; then the tightening block is moved away from the tightening frame by the long-axis screw, so that the inner U-shaped steel bar and the outer U-shaped steel bar are closer, ensuring that the connection accuracy of the two prefabricated walls is greater and more stable; then long steel bars are inserted into the intersection of the inner U-shaped steel bar and the outer U-shaped steel bar to prevent the inner U-shaped steel bar and the outer U-shaped steel bar from moving away from each other, thereby locking this tight connection structure. Through the inventive concept of plug-in, reverse tightening and then locking, the prefabricated wall connection is made high-precision and high-stability. The tightening device and the adjustable connection structure effectively solve the instability problem during the splicing of prefabricated components, ensure the firm connection between the prefabricated walls, and meet the high-precision and high-stability requirements of the building structure.

[0028] In summary, the present application includes at least one of the following beneficial technical effects.

[0029] 1. Through the tightening device and adjustable connection structure, the instability problem during the splicing of prefabricated components is effectively solved, ensuring the firm connection between prefabricated walls and meeting the high precision and high stability requirements of the building structure.

[0030] 2. Through the vibration of the eccentric column in the tightening block, the concrete can be vibrated after pouring to reduce bubbles and voids, improve the density and uniformity of the concrete, and further improve the overall quality of the component.

[0031] 3. Simplify the connection process, so that the splicing speed at the construction site is improved, the construction period is shortened, and the dependence on the skills of the construction workers is reduced, thereby improving the overall construction efficiency.

[0032] 4. Ensure connection strength and stability, reduce the frequency and cost of subsequent maintenance and reinforcement, increase the durability of the building and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of a prefabricated wall in the background technology.

[0034] Figure 2 This is a schematic diagram of the structure of the prefabricated wall portion of this application.

[0035] Figure 3 This is a schematic diagram of the inner extension connection structure of the prefabricated wall in this application.

[0036] Figure 4 This is a schematic diagram of the overall structure before the two prefabricated walls of this application are connected.

[0037] Figure 5 This is a top view of the two prefabricated panels of the present application after connection.

[0038] Figure 6 It is a structural schematic diagram of the present application highlighting the cylindrical groove and the eccentric groove.

[0039] Description of reference numerals: 1. Outer extension; 2. Prefabricated wall; 3. Connecting groove; 4. Inner extension; 5. Inner extension U-shaped steel bar; 6. Clamping frame; 7. Clamping block; 8. Extending block; 9. Slope surface; 10. Positioning hole; 11. Inner extension hole; 12. Outer extension hole; 13. Long-axis screw; 14. Cylindrical groove; 15. Eccentric column; 16. Raised part; 17. Outer extension U-shaped steel bar; 18. Straight extension steel bar; 19. Long steel bar. DETAILED DESCRIPTION

[0040] The present application is further described in detail below in conjunction with all the drawings and specific embodiments.

[0041] This embodiment is intended to illustrate the connection structure of two prefabricated walls 2 in the horizontal direction.

[0042] Reference Figure 2 The figure shows a prefabricated wall 2. The orientation of the prefabricated wall 2 corresponds to the orientation during installation. Prefabricated walls 2 of the same structure are arranged side by side for installation. The two ends of the prefabricated wall 2 have different structures. The right end of the figure features a connecting groove 3 with an open top and right side. The outer wall of the connecting groove 3, which extends to the right, is an extension 1. The lower end of the connecting groove 3 is closed, and the bottom of the connecting groove 3 and the extension 1 are connected. The extension 1 is shown with multiple extension holes 12 spaced evenly along the vertical direction. The cross-section of the extension holes 12 is circular. The axial direction of the extension holes 12 is perpendicular to the surface of the prefabricated wall 2. The left end of the prefabricated wall 2 features an inner extension 4 that can be inserted into the connecting groove 3 of the adjacent prefabricated wall 2 to its left. The inner extension 4 is a vertically arranged long strip. When the inner extension 4 is inserted into the connecting groove 3, the inner extension 4 has an inner extension hole 11 at the position corresponding to the outer extension hole 12. The axial direction of the inner extension hole 11 is perpendicular to the surface of the prefabricated wall 2 and the cross-section of the inner extension hole 11 is elongated.

[0043] Reference Figure 3 A plurality of inner extension U-shaped steel bars 5 are arranged at equal intervals along the longitudinal direction between the two long strips at the left end of the prefabricated wall 2 and the inner extension 4. The inner extension U-shaped steel bars 5 are U-shaped at the transverse interface.

[0044] A U-shaped tightening frame 6 can be inserted into the U-shape of the inner U-shaped steel bar 5, and the opening direction of the tightening frame 6 is in the direction away from the prefabricated wall 2 where the inner U-shaped steel bar 5 is located. A plurality of positioning holes 10 are vertically provided on the two opposite side surfaces of the inner U-shaped steel bar 5. The vertical positions of the positioning holes 10 correspond one-to-one with the outer holes 12. A tightening block 7 can be inserted into the tightening frame 6 and can also slide in the tightening frame 6 toward the U-shaped opening direction of the tightening frame 6. The end face of the tightening block 7 close to the tightening frame 6 is set as a slope surface 9. A plurality of protruding blocks 8 are vertically provided on the end face of the tightening block 7 away from the tightening frame 6. The protruding blocks 8 are made of soft material. Each protruding block 8 is arranged horizontally. The protruding block 8 is in the shape of a small cuboid and can abut against the inner side surface of the inner U-shaped steel bar 5.

[0045] Reference Figure 4 Similar to the inner U-shaped bars 5, the connecting groove 3 of the outer extension 1 also extends from the prefabricated wall 2 and is equipped with multiple outer U-shaped bars 17. These bars 17 are arranged vertically, and each bar 17 has a U-shaped cross-section. A positioning slot (not shown) is provided at the bottom of the connecting groove 3. This slot allows the insertion of a positioning frame, thereby positioning the vertically inserted positioning frame. During installation, the positioning holes 10, the inner extension holes 11, and the outer extension holes 12 on the tightening frame 6 can be coaxial and aligned.

[0046] Reference Figure 5 During installation, two prefabricated walls 2 are arranged horizontally, with the outer extension 1 of one prefabricated wall 2 facing the inner extension 4 of the other prefabricated wall 2. The inner extension 4 is inserted into the outer extension 1, and the inner extension U-shaped steel bars 5 are located in the connecting groove 3. The tightening frame 6 is inserted into the inner extension U-shaped steel bars 5, and the bottom end is inserted into the positioning slot (not shown) at the bottom of the connecting groove 3 of the outer extension 1, thereby positioning the tightening frame 6 stably on the outer extension 1.

[0047] Reference Figure 5 and Figure 6, a long-axis screw 13 is inserted from the outer hole 12, passes through the inner hole 11 and the positioning hole 10, and the end of the long-axis screw 13 reaches the slope 9 of the tightening block 7. As the length of the long-axis screw 13 in the tightening frame 6 becomes longer and longer, the slope 9 pushes the tightening block 7 to slide along the tightening frame 6 toward the opening direction of the tightening frame 6. The movement of the tightening block 7 drives the protruding block 8 to press against the inner U-shaped steel bar 5 and move toward the outer U-shaped steel bar 17. The inner U-shaped steel bar 5 and the outer U-shaped steel bar 17 are staggered in the horizontal position. After the protruding block 8 pushes the inner U-shaped steel bar 5 to the extreme position, the protruding block 8 passes over the outer U-shaped steel bar 17. The U-shaped structure of the outer U-shaped steel bar 17 can improve the stability of the concrete after pouring. On both sides of the protruding block 8, a long steel bar 19 is used, which can simultaneously insert the inner U-shaped steel bar 5 and the outer U-shaped steel bar 17, further ensuring the connection strength, thereby making the connection between the two prefabricated walls 2 more secure. Simultaneously, the concreting of concrete is more facilitated by the transverse movement of the long axis screw rod 13 in the connecting groove 3. After the construction is completed, the redundant part of the tail end of the long axis screw rod 13 can be directly cut off.

[0048] Reference Figure 6 The clamping block 7 is also provided with a cylindrical groove 14, within which an eccentric column 15 rotates eccentrically, with the eccentric rotation being provided by an external force. Protrusions 16 are formed on the inner sidewall of the cylindrical groove 14, evenly protruding into the groove. After concrete is poured, the eccentric column 15 is controlled to rotate, so that it repeatedly strikes the protrusions 16, thereby vibrating the entire clamping frame 6 and tamping the concrete. This helps reduce bubbles and voids, improves the density and uniformity of the concrete, and prevents stratification.

[0049] During construction, the following construction methods are used.

[0050] Horizontal positioning: hoist the prefabricated panels into place, arrange the two prefabricated panels horizontally, place the outer extension 1 and the inner extension 4 opposite to each other, and insert the inner extension 4 into the outer extension 1 horizontally.

[0051] Horizontal tightening: Insert the tightening frame 6 into the inner extension U-shaped steel bar 5 of the inner extension part 4 from the top. When inserted to the bottom, insert the bottom of the tightening frame 6 into the positioning slot at the bottom of the connecting groove 3 of the outer extension part 1, so that the upper part of the tightening frame 6 pulls the inner extension part 4, and the lower part of the tightening frame 6 pulls the outer extension part 1.

[0052] The outer extension part 1 and the tightening frame 6 are positioned, and then the inner extension part 4 is pulled closer: the long-axis screw 13 is inserted from the outer extension hole 12, and the long-axis screw 13 passes through the inner extension hole 11 and the positioning hole 10 and reaches the slope surface 9 of the tightening block 7. The long-axis screw 13 is continued to rotate to move the tightening block 7 away from the tightening frame 6.

[0053] Pull to the extreme position, overlap the steel bars, and insert them longitudinally to position them: eventually, the U-shaped parts of the inner U-shaped steel bar 5 and the outer U-shaped steel bar 17 are overlapped, and the length of the protruding block 8 is smaller than the width of the inner U-shaped steel bar 5 and smaller than the width of the outer U-shaped steel bar 17. Long steel bars 19 are vertically inserted at both ends of the protruding block 8 and in the overlapping part, and the position of the long steel bar 19 is at the end of the protruding block 8.

[0054] The implementation principle of this embodiment is as follows: a tightening frame 6 is used to insert the inner U-shaped steel bar 5 into the inner extension 4, and at the same time, the steel bar is inserted into the positioning slot at the bottom of the connection groove 3 of the outer extension 1, so that the two prefabricated walls 2 are tightly plugged together; then, the tightening block 7 is moved away from the tightening frame 6 by the long-axis screw 13, so that the inner U-shaped steel bar 5 and the outer U-shaped steel bar 17 are closer together, ensuring that the connection accuracy of the two prefabricated walls 2 is greater and more stable; then, a long steel bar 19 is inserted into the intersection of the inner U-shaped steel bar 5 and the outer U-shaped steel bar 17 to prevent the inner U-shaped steel bar 5 and the outer U-shaped steel bar 17 from moving away from each other, thereby locking this tight connection structure. Through the inventive concept of plugging, reverse tightening and then locking, the prefabricated wall 2 connection is made with high precision and high stability.

[0055] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A connection structure, characterized in that: include: A first prefabricated wall (2) and a second prefabricated wall (2); a connecting groove (3) is provided on the end face of the first prefabricated wall (2), and the connecting groove (3) divides the first prefabricated wall (2) into two opposite outer extensions (1), and the outer extensions (1) have opposite outer extension holes (12); the end of the second prefabricated wall (2) is provided with two opposite plate-shaped inner extensions (4), and the inner extensions (4) can be inserted into the outer extensions (1), and the inner extensions (4) have opposite inner extension holes (11); the inner extension holes (11) and the outer extension holes (12) can be coaxial.

2. A connection structure according to claim 1, characterized in that: A positioning slot is provided at the bottom of the connecting groove (3); an inner U-shaped steel bar (5) is provided on the end of the second prefabricated wall (2) close to the first prefabricated wall (2); a top tightening frame (6) can be inserted into the U-shape of the inner U-shaped steel bar (5); and the bottom of the top tightening frame (6) can be inserted into the positioning slot.

3. A connection structure according to claim 2, characterized in that: The side wall of the tightening frame (6) close to the inner extension hole (11) is provided with a positioning hole (10), and the positioning hole (10) and the outer extension hole (12) can be coaxial.

4. A connection structure according to claim 3, characterized in that: The tightening frame (6) is a U-shaped frame with one end open, the open end facing the first prefabricated plate. The tightening block (7) can be inserted into the tightening frame (6), and the side of the tightening block (7) facing the positioning hole (10) is a slope surface (9).

5. A connection structure according to claim 4, characterized in that: The tightening block (7) is provided with a protruding block (8) near the side wall of the first prefabricated wall (2), and the protruding block (8) abuts against the inner-extending U-shaped steel bar (5).

6. A connection structure according to claim 5, characterized in that: The first prefabricated wall (2) is provided with an extended U-shaped steel bar (17) extending into the connecting groove (3) from the side wall close to the connecting groove (3), and the extended U-shaped steel bar (17) and the inner extended U-shaped steel bar (5) are arranged in an alternating manner.

7. A connection structure according to claim 6, characterized in that: The length of the protruding block (8) is smaller than the width of the inner extension U-shaped steel bar (5) and smaller than the width of the outer extension U-shaped steel bar (17).

8. The connection structure according to claim 4, characterized in that: A cylindrical groove (14) is provided in the tightening block (7).

9. A prefabricated wall, characterized in that: The prefabricated walls (2) include the connection structure described in claims 1-8 when connected, and one end of a single prefabricated wall (2) has the structure of the outer extension (1) side, and the other end has the structure of the inner extension (4) side.

10. A construction method for connecting prefabricated walls, characterized in that: The following steps are involved: (1) Horizontal positioning: Arrange the two prefabricated panels horizontally, with the outer extension (1) and the inner extension (4) placed opposite each other, and insert the inner extension (4) into the outer extension (1) in the horizontal direction; (2) Horizontal tightening: insert the top tightening frame (6) into the inner extension U-shaped steel bar (5) of the inner extension part (4) from the top, and when inserted to the bottom, insert the bottom of the top tightening frame (6) into the positioning slot at the bottom of the connecting groove (3) of the outer extension part (1); (3) The outer extension part (1) and the tightening frame (6) are positioned, and then the inner extension part (4) is pulled closer: a long-axis screw (13) is inserted from the outer extension hole (12), and the long-axis screw (13) passes through the inner extension hole (11) and the positioning hole (10) and reaches the slope surface (9) of the tightening block (7), and the long-axis screw (13) is continuously rotated to move the tightening block (7) away from the tightening frame (6); (4) When the inner U-shaped steel bar (5) and the outer U-shaped steel bar (17) overlap, insert the steel bar (19) vertically to position the steel bar: make the U-shaped parts of the inner U-shaped steel bar (5) and the outer U-shaped steel bar (17) overlap, and insert the long steel bar (19) vertically into the overlapping part.

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