Reinforcing structure of prefabricated shear wall and prefabricated coupling beam

Abstract

This invention relates to the field of prefabricated concrete structure technology and discloses a reinforcement structure for prefabricated shear walls and prefabricated connecting beams, including prefabricated shear wall components, prefabricated connecting beam components, embedded steel plates, flanges, webs, strip grooves, first ribs, toothed plates, and insert plates. The prefabricated connecting beam components are installed on the upper side of the assembly surface of the prefabricated shear wall components, and both assembly surfaces are equipped with embedded steel plates. Flanges are welded to the outside of the embedded steel plates, and webs are welded to their inner sides, forming an I-shape. A circular hole is opened in the middle of the web, and strip grooves are opened on the upper and lower sides of the circular hole. Wavy first ribs are installed on both sides of the web surface. Toothed plates are movably connected to the outer sides of the flanges, and insert plates hinged to the toothed plates are inserted on the inner sides of the flanges. This invention optimizes the damper structure, guiding it to enter the stable plastic energy dissipation stage earlier, reducing the impact on the main structure, and simultaneously improving the tightness of the bond between the grout and the damper, reducing the risk of weld cracking.

Description

Technical Field

[0001] This invention relates to the field of prefabricated concrete structure technology, specifically a reinforcement structure for prefabricated shear walls and prefabricated connecting beams. Background Technology

[0002] Energy dissipation and vibration reduction technology is a technique used to reduce the dynamic response of building structures under earthquakes or other vibration loads. Its main principle is to reduce the vibration amplitude and response of the structure by introducing devices that can absorb and dissipate seismic energy, thereby protecting the structure and the safety of people.

[0003] In common precast shear wall and precast coupling beam reinforcement structures, the design of I-shaped dampers is relatively simple, making it difficult to guide the dampers to form a reasonable deformation path under stress. They enter the plastic energy dissipation stage late and are unstable, resulting in limited absorption of seismic energy and easy damage to the main structure. At the same time, the flat web of traditional dampers is unevenly stressed, and localized deformation or instability is easy to concentrate. In addition, the bonding with the grout is not tight, the stress distribution range is narrow, the stress concentration in the weld is high, and the risk of weld cracking is high, affecting the load-bearing capacity and reliability of the connection node. It cannot meet the working requirements of precast concrete structures. Therefore, a reinforcement structure of precast shear wall and precast coupling beam is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a reinforcement structure consisting of precast shear walls and precast connecting beams, thereby solving the technical problems of insufficient seismic performance, uneven stress distribution, and low node reliability in reinforced structures.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a reinforcement structure for a precast shear wall and a precast connecting beam, comprising: Precast shear wall components and precast connecting beam components, wherein the precast connecting beam components are installed on the upper side of the assembly surface of the precast shear wall components, and the assembly surfaces of the precast shear wall components and precast connecting beam components are equipped with embedded steel plates. The wing plate is welded to the outside of the embedded steel plate. A web plate is welded to the inside of the wing plate. The wing plate and the web plate are combined in an I-shape. A circular hole is opened in the middle of the web plate. Grouting material is poured between the precast shear wall component and the precast connecting beam component outside the wing plate and the web plate. A strip-shaped groove is formed inside the web plate on the upper and lower sides of the circular hole. The surface of the web plate is equipped with first ribs on both the left and right sides of the circular hole. The first ribs are wavy. The toothed plate is movably connected to the outer sides of the wing plate. Insert plates are inserted into the inner sides of the wing plate at positions corresponding to the toothed plate, and the insert plates are hinged to the corresponding outer positions of the toothed plate.

[0006] Preferably, welded reinforcing bars are installed at all four corners of the side of the embedded steel plate that contacts the precast shear wall component and the precast connecting beam component. These welded reinforcing bars are inserted into corresponding positions inside the precast shear wall component and the precast connecting beam component. This design, with welded reinforcing bars at the four corners of the embedded steel plate and inserted into the components, enhances the connection stability between the embedded steel plate and the precast shear wall and connecting beam components. When the reinforced structure is under stress, the welded reinforcing bars effectively disperse stress, preventing loosening or separation between the embedded steel plate and the components, thus ensuring the reliability and stability of the overall structure under complex stress conditions.

[0007] Preferably, positioning strips are welded to both sides of the contact surface between the wing plate and the embedded steel plate. These positioning strips are trapezoidal in shape and are inserted into the embedded steel plate. The welding of these trapezoidal positioning strips to both sides of the contact surface between the wing plate and the embedded steel plate allows for precise positioning of the wing plate and the embedded steel plate. During installation, the wing plate can be quickly and accurately installed, improving construction efficiency. Simultaneously, the positioning strips enhance the connection strength between the two, preventing displacement of the wing plate under stress and ensuring structural stability.

[0008] Preferably, the insert plate has lugs connected to both its upper and lower ends. The length of the insert plate is greater than the height of the wing plate. Bolts are inserted into both sides of the interior of the upper lug, and these bolts are screwed into corresponding positions inside the wing plate. The upper and lower ends of the insert plate are connected to lugs, and the upper lug is screwed into the wing plate. This structure facilitates the fixing and adjustment of the insert plate. By tightening and loosening the bolts, the position of the insert plate can be flexibly adjusted, thereby changing the angle of the toothed plate to adapt to different working conditions. Moreover, the bolt connection is stable and reliable, ensuring the stability of the connection between the insert plate and the wing plate.

[0009] Preferably, the length and width of the ear plate are both greater than the internal slot of the wing plate, and a boss is provided on the upper surface of the upper ear plate. An anti-slip pad is provided on the outside of the boss, and the added boss facilitates the pulling of the ear plate and the insert plate.

[0010] Preferably, a second rib is welded to the outer edge of the web, a reinforcing washer is installed at the outer edge of the strip groove, and reinforcing ribs are welded to the inner side of the reinforcing washer and the outer edge of the circular hole. The second rib is welded to the edge of the web, the reinforcing washer is installed at the edge of the strip groove, and reinforcing ribs are welded to the edge of the circular hole. These reinforcing structures significantly improve the overall strength and stiffness of the web. Under load, it can effectively resist deformation and damage, enhance the load-bearing capacity of the structure, extend the service life of the reinforced structure, and ensure the reliability of the connection between the precast shear wall and the coupling beam.

[0011] Preferably, the reinforcing washer has a ring structure. The inner diameter of the reinforcing washer matches the width of the strip groove, and the outer diameter of the reinforcing washer is larger than the width of the strip groove. The circular hole penetrates both sides of the web. The reinforcing washer's ring structure, with the inner ring matching the width of the strip groove and the outer ring larger than the width of the strip groove, allows the reinforcing washer to fit tightly against the edge of the strip groove. When the structure is under stress, it can effectively disperse the stress at the edge of the strip groove, preventing stress concentration that could lead to edge damage. Simultaneously, it enhances the connection strength between the strip groove and the surrounding structure, improving the overall stability and durability of the structure.

[0012] Preferably, the first ribs on both the left and right sides are axially symmetrically arranged. The height difference between the crests and troughs of the first ribs is 1-5 times the thickness of the web. All first ribs protrude from the web surface. This axially symmetrical arrangement of the first ribs on both sides, with a certain height difference between the crests and troughs and protruding from the web surface, enhances the shear and bending resistance of the web. Under external forces such as earthquakes, the wavy first ribs can effectively disperse stress, making the web more evenly stressed, preventing excessive local stress and damage, and improving the performance of the reinforced structure under complex stress conditions.

[0013] Preferably, the welded reinforcing bar has an integrally formed annular protrusion on its exterior. At least two sets of these annular protrusions are provided, symmetrically distributed along the length of the welded reinforcing bar. The integrally formed annular protrusions increase the contact area and friction between the welded reinforcing bar and the concrete inside the precast component. Under structural stress, this better transfers force to the concrete, enhances the anchorage effect between the welded reinforcing bar and the component, prevents the welded reinforcing bar from being pulled out, and improves the overall connection strength and stability of the structure.

[0014] Preferably, a reinforcing flange is integrally formed on the outer side of the weld between the web and the flange. This reinforcing flange is triangular in shape, with its two right-angled sides respectively abutting the surfaces of the web and the flange. This triangular reinforcing flange, integrally formed on the outer side of the weld between the web and the flange, effectively enhances the connection strength between the web and the flange. When the reinforced structure is under stress, the reinforcing flange can disperse the stress at the connection between the web and the flange, preventing cracks or fractures at the connection and improving the overall load-bearing capacity and stability of the structure.

[0015] Compared with the prior art, the present invention provides a reinforcement structure for precast shear walls and precast connecting beams, which has the following beneficial effects: 1. The reinforcement structure of this precast shear wall and precast connecting beam, by welding an I-shaped soft steel damper composed of flanges and webs between the assembly surfaces of the precast shear wall components and the precast connecting beam components, and by opening a circular hole in the middle of the web and strip grooves on the upper and lower sides of the circular hole, can guide the damper to form a reasonable deformation path under stress, so that it can enter the stable plastic energy dissipation stage earlier, effectively absorb the energy generated by earthquake and other vibration loads, reduce the impact of vibration on the main structure of the precast shear wall and precast connecting beam, and reduce the risk of serious damage to the main structure. At the same time, through the wave-shaped first ribs on the left and right sides of the web surface, the stress mode of the traditional flat web is changed. Under the action of seismic load, the wave-shaped structure can generate layered bending deformation along its own shape, making the triggering of plastic deformation more uniform, avoiding local concentrated deformation or instability of the web, and improving the quality of the reinforcement structure. 2. The reinforcement structure of the precast shear wall and precast connecting beam utilizes insert plates and hinged toothed plates inserted on both sides inside the flange. After the I-shaped soft steel damper is welded and installed with the precast component, the tilt angle of the toothed plate can be flexibly adjusted by pressing the insert plates, allowing the toothed plate to better fit and interlock with the grouting material. This improves the tightness of the bond between the grouting material and the damper, preventing detachment during vibration. At the same time, the toothed plate can effectively transfer the concentrated stress on the flange to the interior of the grouting material, expanding the stress distribution range, reducing stress concentration at the flange end weld, reducing the risk of weld cracking, and further improving the load-bearing capacity and reliability of the entire connection node. This ensures that the reinforced structure maintains stable performance during long-term use, and the main damage after an earthquake is concentrated on the damper itself, facilitating subsequent repair and replacement and reducing maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the embedded steel plate structure of the present invention; Figure 3 This is a schematic diagram of the welded steel bar structure of the present invention; Figure 4 This is a schematic diagram of the wing plate and web plate structure of the present invention; Figure 5 This is a schematic diagram of the toothed plate structure of the present invention; Figure 6 This is a schematic diagram of the insert plate assembly structure of the present invention; Figure 7 This is a schematic diagram of the web surface structure of the present invention.

[0017] In the diagram: 1. Precast shear wall component; 2. Precast connecting beam component; 3. Embedded steel plate; 4. Wing plate; 5. Web plate; 51. Second rib; 6. Welded reinforcing bar; 7. Toothed plate; 8. Insert plate; 9. Ear plate; 10. First rib; 11. Circular hole; 12. Strip groove; 13. Reinforcing washer; 14. Reinforcing rib; 15. Bolt; 16. Boss; 17. Positioning insert; 18. Grouting material. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides a technical solution: a reinforcement structure for a precast shear wall and a precast connecting beam, comprising a precast shear wall component 1, a precast connecting beam component 2, an embedded steel plate 3, a flange 4, a web 5, a second rib 51, welded reinforcing bars 6, a toothed plate 7, an insert plate 8, an ear plate 9, a first rib 10, a circular hole 11, a strip groove 12, a reinforcing washer 13, a reinforcing rib 14, a bolt 15, a boss 16, a positioning insert 17, and grouting material 18. Please see Figure 1 The precast coupling beam 2 is installed on the upper side of the assembly surface of the precast shear wall 1. Please refer to [link / reference]. Figure 2 Both the precast shear wall component 1 and the precast connecting beam component 2 are equipped with embedded steel plates 3 on their assembly surfaces. Please see Figure 3 The wing plate 4 is welded to the outside of the embedded steel plate 3. A web plate 5 is welded to the inside of the wing plate 4. The wing plate 4 and web plate 5 are combined in an I-shape. Please refer to [link / reference]. Figure 7 A circular hole 11 is provided in the middle of the interior of the web 5. Please refer to [link / reference]. Figure 1 Grouting material 18 is poured between the precast shear wall component 1 and the precast connecting beam component 2 outside the wing plate 4 and the web plate 5; Please see Figure 7 The strip groove 12 is opened inside the web plate 5 and located on the upper and lower sides of the circular hole 11. The surface of the web plate 5 is equipped with first ribs 10 on both the left and right sides of the circular hole 11. The first ribs 10 are wavy. Please see Figure 5 Toothed plate 7 is movably connected to the outer sides of wing plate 4. Inserted plate 8 is inserted into the inner sides of wing plate 4 at positions corresponding to toothed plate 7. Inserted plate 8 is hinged to the corresponding outer position of toothed plate 7. Please see Figure 3Welded reinforcing bars 6 are installed at the four corners of the side of the embedded steel plate 3 that contacts the precast shear wall component 1 and the precast connecting beam component 2. The welded reinforcing bars 6 are inserted into corresponding positions inside the precast shear wall component 1 and the precast connecting beam component 2. Please refer to [link / reference]. Figure 4 Positioning inserts 17 are welded on both sides of the contact surface between the wing plate 4 and the embedded steel plate 3. The positioning inserts 17 are all trapezoidal in shape and are inserted into the interior of the embedded steel plate 3. Please see Figure 6 Both the upper and lower ends of the insert plate 8 are connected to ear plates 9. The length of the insert plate 8 is greater than the height of the wing plate 4. Bolts 15 are inserted into both sides of the interior of the upper ear plate 9, and the bolts 15 are screwed into corresponding positions inside the wing plate 4. The length and width of the ear plate 9 are greater than the internal slots of the wing plate 4. A boss 16 is installed on the upper surface of the upper ear plate 9, and an anti-slip pad is installed on the outside of the boss 16. Please refer to [link / reference]. Figure 7 A second rib 51 is welded to the outer edge of the web plate 5, and a reinforcing washer 13 is installed at the outer edge of the strip groove 12. A reinforcing rib 14 is welded to the inside of the reinforcing washer 13 and the outer edge of the circular hole 11. By welding an I-shaped soft steel damper composed of a flange 4 and a web 5 between the assembly surfaces of the precast shear wall component 1 and the precast connecting beam component 2, and by opening a circular hole 11 in the middle of the web 5 and strip grooves 12 on the upper and lower sides of the circular hole 11, the damper can be guided to form a reasonable deformation path under stress, so that it can enter the stable plastic energy dissipation stage earlier, effectively absorb the energy generated by earthquake and other vibration loads, reduce the impact of vibration on the main structure of the precast shear wall and the precast connecting beam, and reduce the risk of serious damage to the main structure. At the same time, the wave-shaped first ribs 10 on the left and right sides of the web 5 surface change the stress mode of the traditional flat web 5. Under the action of seismic load, the wave-shaped structure can generate layered bending deformation along its own shape, making the triggering of plastic deformation more uniform, avoiding local concentrated deformation or instability of the web 4, and improving the quality of the reinforced structure. By inserting the insert plates 8 and hinged toothed plates 7 on both sides inside the flange 4, the tilt angle of the toothed plates 7 can be flexibly adjusted by pressing the insert plates 8 after the I-shaped soft steel damper is welded and installed with the precast component. This allows the toothed plates 7 to better fit and engage with the grouting material 18, improving the tightness of the bond between the grouting material 18 and the damper, preventing detachment during vibration. At the same time, the toothed plates 7 can effectively transfer the concentrated stress on the flange to the interior of the grouting material 18, expanding the stress distribution range, reducing stress concentration at the flange end weld, reducing the risk of weld cracking, and further improving the load-bearing capacity and reliability of the entire connection node. This ensures that the reinforced structure maintains stable performance during long-term use, and the main damage after the earthquake is concentrated on the damper itself, facilitating subsequent repair and replacement and reducing maintenance costs. The reinforcing washer 13 is a ring structure. The inner diameter of the reinforcing washer 13 is adapted to the width of the strip groove 12, and the outer diameter of the reinforcing washer 13 is larger than the width of the strip groove 12. The circular hole 11 penetrates both sides of the web plate 5. The first ribs 10 on both sides are axially symmetrically arranged. The height difference between the crest and trough of the first rib 10 is 1-5 times the thickness of the web plate. The first ribs 10 are all protruding from the surface of the web plate 5. The welded steel bar 6 has an integrally formed annular ridge on its outside. There are at least two sets of annular ridges, and the two sets of annular ridges are symmetrically distributed along the length of the welded steel bar 6. The weld between the web plate 5 and the flange 4 has an integrally formed reinforcing flange on its outside. The reinforcing flange is triangular in shape, and the two right-angled sides of the reinforcing flange are respectively attached to the surfaces of the web plate 5 and the flange 4.

[0020] This scheme welds an I-shaped soft steel damper, consisting of a flange 4 and a web 5, between the assembly surfaces of the precast shear wall component 1 and the precast connecting beam component 2. A circular hole 11 is opened in the middle of the web 5, and strip grooves 12 are opened on the upper and lower sides of the circular hole 11. This guides the damper to form a reasonable deformation path under stress, allowing it to enter the stable plastic energy dissipation stage earlier, effectively absorbing the energy generated by seismic and other vibration loads, reducing the impact of vibration on the main structure of the precast shear wall and precast connecting beam, and lowering the risk of serious damage to the main structure. Furthermore, the wavy first ribs 10 on the left and right sides of the web 5 surface change the traditional stress mode of a flat web 5. Under seismic loads, the wavy structure can generate layered bending deformation along its own shape, making the triggering of plastic deformation more uniform and avoiding localized deformation of the web 4. The concentrated deformation or instability of the damper improves the quality of the reinforced structure. Furthermore, the insertion plates 8 and hinged toothed plates 7 on both sides of the inner flange 4 allow for flexible adjustment of the toothed plate 7's tilt angle by pressing the insertion plates 8 after the I-shaped soft steel damper is welded and installed with the precast component. This ensures better contact and engagement between the toothed plate 7 and the grouting material 18, improving the tightness of the bond between the grouting material 18 and the damper, preventing detachment during vibration. Simultaneously, the toothed plate 7 effectively transfers the concentrated stress on the flange to the interior of the grouting material 18, expanding the stress distribution range, reducing stress concentration at the flange end weld, and decreasing the risk of weld cracking. This further enhances the load-bearing capacity and reliability of the entire connection node, ensuring the reinforced structure maintains stable performance during long-term use. Post-earthquake damage is primarily concentrated on the damper itself, facilitating subsequent repair and replacement and reducing maintenance costs.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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.

[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reinforcing structure of a prefabricated shear wall and a prefabricated coupling beam, characterized by, include: Precast shear wall component (1) and precast connecting beam component (2), wherein the precast connecting beam component (2) is installed on the upper side of the assembly surface of the precast shear wall component (1), and both the assembly surfaces of the precast shear wall component (1) and the precast connecting beam component (2) are equipped with embedded steel plates (3). The wing plate (4) is welded to the outside of the pre-embedded steel plate (3). The web plate (5) is welded to the inside of the wing plate (4). The wing plate (4) and the web plate (5) are arranged in an I-shape. A circular hole (11) is opened in the middle of the web plate (5). Grouting material (18) is poured between the precast shear wall component (1) and the precast connecting beam component (2) outside the wing plate (4) and the web plate (5). A strip groove (12) is opened inside the web (5) on the upper and lower sides of the circular hole (11). The surface of the web (5) is equipped with first ribs (10) on both the left and right sides of the circular hole (11). The first ribs (10) are wavy. The toothed plate (7) is movably connected to the outer sides of the wing plate (4). Insert plates (8) are inserted into the inner sides of the wing plate (4) at positions corresponding to the toothed plate (7). The insert plates (8) are hinged to the corresponding outer positions of the toothed plate (7).

2. The reinforcing structure of a prefabricated shear wall and a prefabricated coupling beam according to claim 1, characterized in that: The embedded steel plate (3) is equipped with welded steel bars (6) at the four corners of the side that contacts the precast shear wall component (1) and the precast connecting beam component (2). The welded steel bars (6) are inserted into the corresponding positions inside the precast shear wall component (1) and the precast connecting beam component (2).

3. The reinforcing structure of precast shear wall and precast coupling beam according to claim 1, characterized in that: Positioning inserts (17) are welded on both sides of the contact surface between the wing plate (4) and the embedded steel plate (3). The positioning inserts (17) are all trapezoidal in shape and are inserted into the interior of the embedded steel plate (3).

4. The reinforcing structure of precast shear wall and precast coupling beam according to claim 1, characterized in that: Both ends of the insert plate (8) are connected to ear plates (9). The length of the insert plate (8) is greater than the height of the wing plate (4). Bolts (15) are inserted into both sides of the upper ear plate (9). The bolts (15) are screwed into the corresponding positions inside the wing plate (4).

5. The reinforcing structure of a prefabricated shear wall and a prefabricated coupling beam according to claim 4, characterized in that: The length and width of the ear plate (9) are both greater than the internal slot of the wing plate (4). The upper surface of the upper ear plate (9) is provided with a boss (16), and the outside of the boss (16) is provided with an anti-slip pad.

6. The reinforcing structure of precast shear wall and precast coupling beam according to claim 1, characterized in that: A second rib (51) is welded to the outer edge of the web (5), and a reinforcing washer (13) is installed at the outer edge of the strip groove (12). A reinforcing rib (14) is welded to the inside of the reinforcing washer (13) and the outer edge of the circular hole (11).

7. The reinforcement structure of a precast shear wall and precast connecting beam according to claim 6, characterized in that: The reinforcing washer (13) has a ring structure. The inner diameter of the reinforcing washer (13) is adapted to the width of the strip groove (12). The outer diameter of the reinforcing washer (13) is greater than the width of the strip groove (12). The circular hole (11) penetrates both sides of the web plate (5).

8. The reinforcement structure of a precast shear wall and precast connecting beam according to claim 1, characterized in that: The first ribs (10) on both the left and right sides are symmetrically arranged. The height difference between the peak and trough of the first rib (10) is 1-5 times the thickness of the web. The first ribs (10) are all protruding from the surface of the web (5).

9. The reinforcement structure of a precast shear wall and precast connecting beam according to claim 1, characterized in that: The welded steel bar (6) has an integrally formed annular protrusion on its exterior. The annular protrusion is provided in at least two sets, and the two sets of annular protrusion are symmetrically distributed along the length direction of the welded steel bar (6).

10. The reinforcement structure of a precast shear wall and precast connecting beam according to claim 1, characterized in that: A reinforcing flange is integrally formed on the outer side of the weld between the web plate (5) and the wing plate (4). The reinforcing flange is triangular in shape, and the two right-angled sides of the reinforcing flange are respectively attached to the surfaces of the web plate (5) and the wing plate (4).

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