An energy-absorbing vertical joint assembled shear wall node

Abstract

An energy-dissipating vertical joint assembled shear wall node, the node includes a first wall, a second wall and a damping structure, the first wall is perpendicular to the second wall, the damping structure includes a pair of embedded plates, a pair of sliding connection plates and a pair of friction plates, the embedded plates are connected to the first wall or the second wall, each friction plate is arranged between an embedded plate and a sliding connection plate, the sliding connection plate can be slidably connected to the friction plate and the embedded plate, and the pair of sliding connection plates are connected to each other. The energy-dissipating vertical joint assembled shear wall node involved in the present invention adopts a damping structure for connection, which can greatly reduce the workload of wet operations such as concrete pouring on site, and realize dry connection of vertical joints. Under the action of horizontal loads, the damping structure in the vertical joints first reaches yield energy dissipation, which plays a role in reducing wall limb damage and improving the seismic performance of the structure. At the same time, as a connecting device, it can also realize the overall performance of the assembled shear wall structure.

Description

Technical Field

[0001] The present invention belongs to the field of construction engineering, and more specifically, relates to an energy-absorbing vertical joint assembled shear wall node. Background Art

[0002] At present, the design purpose of prefabricated concrete structures in my country can be described as: we hope to make prefabricated concrete behave like integral concrete, so the joint connections adopted in my country are basically based on wet joints to achieve rigid connections. This "cast-in-place" wet connection method aims to ensure the integrity and continuity of the structure and designs the joints as strong connections. It has the advantages of good overall performance and simple design methods, but the processing and manufacturing of components is complicated; in order to achieve the purpose of being equivalent to cast-in-place, it is necessary to throw out longer steel bars or closed stirrups outside the prefabricated components, which is inconvenient to transport, and the workload of tying steel bars in the seams is large. A large amount of wet work is required on site, and the process is relatively cumbersome.

[0003] There are a large number of horizontal and vertical joints in prefabricated shear wall structures. According to the design concept of "strong horizontal joints and weak vertical joints", the horizontal joints can adopt the existing connection method to achieve "strong horizontal joints", while the vertical joints are relatively weak, and energy is dissipated under the action of horizontal loads, which plays a role in reducing wall damage and improving overall performance. Therefore, it is necessary to provide a node construction method in which a plurality of friction dampers are arranged in an energy-dissipating vertical joint prefabricated shear wall to achieve dry connection of the vertical joints of the wall limbs and improve the seismic performance of the structure. Summary of the invention

[0004] The purpose of the present invention is to provide an energy-absorbing vertical joint assembled shear wall node, wherein the vertical joint adopts a dry connection method, which can realize rapid assembly of the vertical joint and improve the seismic performance of the structure.

[0005] In order to achieve the above-mentioned purpose, the present invention provides an energy-absorbing vertical seam assembled shear wall node, wherein the node includes a first wall, a second wall and a damping structure, wherein the first wall is perpendicular to the second wall, and the damping structure includes a pair of embedded plates, a pair of sliding connecting plates and a pair of friction plates, wherein the embedded plates are connected to the first wall or the second wall, and each of the friction plates is arranged between one of the embedded plates and one of the sliding connecting plates, and the sliding connecting plates are slidably connected to the friction plates and the embedded plates, and a pair of the sliding connecting plates are connected to each other.

[0006] Preferably, the sliding connecting plate, the embedded plate and the friction plate are arranged parallel to each other, one of the embedded plates is connected to the wall surface of the first wall through a plurality of vertically connected fixings, and the other embedded plate is fixedly connected to the side of the second wall through a plurality of vertically connected fixings.

[0007] Preferably, the fixing member is an anchor bolt.

[0008] Preferably, each of the sliding connection plates is provided with a pair of strip holes, and the strip holes are arranged along the vertical direction;

[0009] The sliding connection plate is connected to the friction plate and the embedded plate through a plurality of first connection members vertically passing through the strip holes, and the sliding connection plate can slide up and down using the strip holes as sliding grooves.

[0010] Preferably, the friction plate is provided with a plurality of connection holes, and each of the first connection members passes through one of the strip holes and one of the connection holes in sequence to be connected to the embedded member;

[0011] When the shear wall is subjected to horizontal force, the deformation of the first wall and the second wall in the vertical direction drives the sliding connection plate to slide relative to the friction plate and the embedded plate using the strip holes as sliding grooves.

[0012] Preferably, it further comprises a shear-resistant plate, which is vertically connected to the embedded plate and is located in the first wall or the second wall.

[0013] Preferably, a pair of ribs is provided in the middle of each sliding connection plate, and the ribs of the pair of sliding connection plates are plugged into each other.

[0014] Preferably, a plurality of mounting holes are provided on the rib plates, and two pairs of the rib plates are connected to each other via second connecting members and welding members passing through the mounting holes.

[0015] Preferably, the second connecting member is a bolt.

[0016] The energy-dissipating vertical joint assembled shear wall node involved in the present invention has the beneficial effect that the damping structure is used for connection, which can greatly reduce the workload of wet operations such as concrete pouring on site and realize dry connection of the vertical joints; under the action of horizontal loads, the damping structure in the vertical joints first reaches yield energy dissipation, which plays a role in reducing wall limb damage and improving the seismic performance of the structure. At the same time, as a connecting device, it can also realize the overall performance of the assembled shear wall structure.

[0017] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0019] Figure 1a A schematic diagram of the structure of an energy-absorbing vertical seam assembled shear wall node according to an embodiment of the present invention is shown. Figure 1b The main view of the energy dissipating vertical seam assembled shear wall node is shown;

[0020] Figure 2 A schematic diagram of a damping structure in an energy-dissipating vertical seam assembled shear wall node according to an embodiment of the present invention is shown;

[0021] Figure 3 A top view of a damping structure in an energy-dissipating vertical seam assembled shear wall node according to an embodiment of the present invention is shown;

[0022] Figure 4a A schematic diagram of the structure of the embedded plate in the energy-absorbing vertical seam assembled shear wall node according to an embodiment of the present invention is shown. Figure 4b shows a side view of the embedded plate, Figure 4c A top view of the embedded plate is shown;

[0023] Figure 5a A schematic diagram of the structure of a friction plate in an energy-absorbing vertical seam assembled shear wall node according to an embodiment of the present invention is shown. Figure 5b shows a side view of the friction plate, Figure 5c A top view of the friction plate is shown;

[0024] Figure 6a A schematic diagram of the structure of a first sliding connection plate in an energy-absorbing vertical seam assembled shear wall node according to an embodiment of the present invention is shown. Figure 6b shows a side view of a first sliding connection plate, Figure 6c shows a top view of a first sliding connection plate;

[0025] Figure 7a A schematic diagram of the structure of a second sliding connection plate in an energy-absorbing vertical seam assembled shear wall node according to an embodiment of the present invention is shown. Figure 7b shows a side view of the second sliding connection plate, Figure 7c A top view of the second sliding connection plate is shown.

[0026] Description of reference numerals:

[0027] 1. Embedded plate; 2. Friction plate; 3. Sliding connecting plate; 4. Rib plate; 5. Fixing piece; 6. Shear plate; 7. First connecting piece; 8. Second connecting piece; 9. Strip hole; 10. Welding piece; 11. First wall; 12. Second wall. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0029] In order to solve the problems existing in the prior art, the present invention provides an energy-absorbing vertical seam assembled shear wall node, which includes a first wall, a second wall and a damping structure, wherein the first wall is perpendicular to the second wall; the damping structure includes a pair of embedded plates, a pair of sliding connecting plates and a pair of friction plates, the embedded plates are connected to the first wall or the second wall, each friction plate is arranged between an embedded plate and a sliding connecting plate, the sliding connecting plate can be slidably connected to the friction plate and the embedded plate, and the pair of sliding connecting plates are connected to each other.

[0030] The energy-dissipating vertical joint assembled shear wall node involved in the present invention adopts a damping structure for connection, which can greatly reduce the workload of wet operations such as concrete pouring on site and realize dry connection of the vertical joints; under the action of horizontal loads, the damping structure in the vertical joints first reaches yield energy dissipation, which plays a role in reducing wall limb damage and improving the seismic performance of the structure. At the same time, as a connecting device, it can also realize the overall performance of the assembled shear wall structure.

[0031] A gap is formed between the first wall and the second wall, and the damping structure is arranged in the gap; a pair of sliding connecting plates are respectively the first sliding connecting plate and the second sliding connecting plate, an embedded plate, a friction plate and the first sliding connecting plate constitute a first damping device, the first sliding connecting plate is connected to the first wall through the friction plate and the embedded plate, that is, the first damping device is connected to the first wall; an embedded plate, a friction plate and the second sliding connecting plate constitute a second damping device, the second sliding connecting plate is connected to the second wall through the friction plate and the embedded plate, that is, the second damping device is connected to the second wall, the first sliding connecting plate and the second sliding connecting plate are connected to each other, that is, the first damping device and the second damping device are connected to each other to form a damping structure as a whole, the damping structure has two sliding friction surfaces, one is the sliding friction between the first sliding connecting plate and the friction plate, and the other is the sliding friction between the second sliding connecting plate and the friction plate, so as to realize the dry connection between the walls, reduce the workload of wet operations such as concrete pouring on site, and improve work efficiency. At the same time, as a connecting device, it can also realize the overall performance of the assembled shear wall structure.

[0032] Preferably, the sliding connection plate, the embedded plate and the friction plate are arranged parallel to each other, one embedded plate is connected to the wall surface of the first wall through multiple vertically connected fixings, and the other embedded plate is fixedly connected to the side of the second wall through multiple vertically connected fixings.

[0033] Preferably, the fixing parts are anchor bolts, and multiple fixing parts are symmetrically arranged in two rows on each embedded plate and inserted into the first wall or the second wall, so that the embedded plate is stably connected to the first wall or the second wall. Multiple anchor bolt holes are opened on both sides of the embedded plate for connecting the fixing parts, and the number of fixing parts is determined according to design requirements.

[0034] Preferably, each sliding connection plate is provided with a pair of strip holes, which are arranged in the vertical direction; the sliding connection plate is connected to the friction plate and the embedded plate through a plurality of first connecting members that vertically pass through the strip holes, and the sliding connection plate can slide up and down using the strip holes as sliding grooves.

[0035] Preferably, a plurality of connecting holes are provided on the friction plate, and each first connecting member passes through a strip hole and a connecting hole in sequence to be connected to the embedded member;

[0036] When the shear wall is subjected to horizontal force, the deformation of the first wall and the second wall in the vertical direction drives the sliding connection plate to slide relative to the friction plate and the embedded plate with the strip holes as sliding grooves.

[0037] The first connecting member is a high-strength bolt, and a row of bolt holes are opened on both sides of the friction plate and the embedded plate for connecting the first connecting member; the strip holes are located on both sides of the sliding connection plate, and the strip holes on each side correspond to multiple bolt holes, and multiple high-strength bolts pass through the strip holes and the bolt holes on the friction plate in sequence and are connected to the bolt holes on the embedded plate; the multiple high-strength bolts are arranged in a row along the strip holes, and the bolt heads of the high-strength bolts are located on the opposite side of a pair of sliding connection plates to provide pre-tightening force to the sliding connection plates;

[0038] When the shear wall is subjected to horizontal force, the top of the first wall or the second wall is deformed and displaced by the horizontal force, causing the walls to shift in the vertical direction relative to each other. Since the embedded plate is fixedly connected to the first wall or the second wall, the relative movement of the first wall or the second wall in the vertical direction drives the sliding connection plate to slide with the strip hole as a sliding groove, and the friction plate provides friction between the sliding connection plate and the embedded plate to achieve a better energy dissipation effect.

[0039] There are multiple bolt holes in each column on both sides of the friction plate and the embedded plate. Each bolt hole is used to connect the first connecting member. Multiple first connecting members corresponding to each column of bolt holes are evenly distributed in a strip hole.

[0040] Friction plates can be made of different materials, such as rubber, metal sheets, etc. In practical applications, the material corresponding to the corresponding friction coefficient is selected according to design requirements to achieve good energy consumption.

[0041] Preferably, it also includes a pair of shear-resistant plates, which are vertically connected to the embedded plates and are located in the first wall or the second wall.

[0042] Each embedded plate is pre-installed in the first wall or the second wall through a plurality of symmetrically arranged fixing parts, namely anchor bolts and a shear plate, so that the embedded plate and the wall become a whole, and the embedded plate in the first wall and the embedded plate in the second wall are symmetrically arranged. The shear plate is arranged according to actual strength requirements, and a symmetrical structure is not mandatory. The number of anchor bolts is also determined according to actual needs.

[0043] Preferably, a pair of ribs is provided in the middle of each sliding connection plate, and the ribs of the pair of sliding connection plates are plugged into each other. The spacing between the pair of ribs of the first sliding connection plate is smaller than the spacing between the pair of ribs of the second sliding connection plate.

[0044] Preferably, a plurality of mounting holes are provided on the rib plates, and the two pairs of rib plates are connected to each other via second connecting members and welding members passing through the mounting holes.

[0045] Preferably, the second connecting member is a bolt, and the welded member is formed by plug welding. A portion of the mounting hole is used for connecting the bolt, and another portion is used for forming the welded member by plug welding.

[0046] A pair of sliding connecting plates are connected to each other through a second connecting member, namely a bolt, and a welding member, so that the first damping device and the second damping device form a damping structure as a whole, thereby realizing the overall performance of the assembled shear wall structure.

[0047] The energy-dissipating vertical seam assembled shear wall node involved in the present invention can make the damping structure yield and dissipate energy under the action of horizontal load, thereby reducing the damage to the wall limbs and improving the seismic performance of the structure; each component has a simple structure, is easy to process, and is very convenient to install and disassemble; the damping structure as a connecting device can determine its size according to the actual project, and the materials used are steel plates and steel sections, etc., which are low in cost and can effectively reduce the cost of the assembled shear wall structure; the construction method is economical and applicable, easy to operate, has strong energy dissipation capacity, stable friction performance, and good durability, and can be widely used in the vertical seams of assembled shear wall structures; after an earthquake occurs, the damaged damping structure is replaced to restore the function of the assembled shear wall structure.

[0048] Example 1

[0049] As shown in Figure 1 to Figure 7c As shown, the present invention provides an energy-absorbing vertical seam assembled shear wall node, which includes a first wall 11, a second wall 12 and a damping structure, wherein the first wall 11 is perpendicular to the second wall 12; the damping structure includes a pair of embedded plates 1, a pair of sliding connecting plates 3 and a friction plate 2, the embedded plates 1 are connected to the first wall 11 or the second wall 12, each friction plate 2 is arranged between an embedded plate 1 and a sliding connecting plate 3, the sliding connecting plate 3 can be slidably connected to the friction plate 2 and the embedded plate 1, and the pair of sliding connecting plates 3 are connected to each other.

[0050] A gap is formed between the first wall 11 and the second wall 12, and a damping structure is arranged in the gap; a pair of sliding connecting plates 3 are respectively a first sliding connecting plate and a second sliding connecting plate, an embedded plate 1, a friction plate 2 and the first sliding connecting plate constitute a first damping device, the first sliding connecting plate is connected to the first wall 11 through the friction plate 2 and the embedded plate 1, that is, the first damping device is connected to the first wall 11; an embedded plate 1, a friction plate 2 and a second sliding connecting plate constitute a second damping device, the second sliding connecting plate 4 is connected to the second wall through the friction plate 2 and the embedded plate 1, that is, the second damping device is connected to the second wall 12, the first sliding connecting plate and the second sliding connecting plate are connected to each other, that is, the first damping device and the second damping device are connected to each other to form a damping structure as a whole, and the damping structure has two sliding friction surfaces, one is the sliding friction between the first sliding connecting plate and the friction plate, and the other is the sliding friction between the second sliding connecting plate and the friction plate.

[0051] In this embodiment, the sliding connecting plate 3 is arranged parallel to the embedded plate 1 and the friction plate 2, one embedded plate 1 is connected to the wall surface of the first wall 11 through a plurality of vertically connected fixing members 5, and the other embedded plate 1 is fixedly connected to the side of the second wall 12 through a plurality of vertically connected fixing members 5.

[0052] In this embodiment, the fixing members 5 are anchor bolts. Multiple fixing members 5 are symmetrically arranged in two rows on each embedded plate 1 and inserted into the first wall 11 or the second wall 12, so that the embedded plate 1 is stably connected to the first wall 11 or the second wall 12. Multiple anchor bolt holes are opened on both sides of the embedded plate 1 for connecting the fixing members 5. The number of fixing members 5 is six, three in each row.

[0053] In this embodiment, a pair of strip holes 9 are provided on the sliding connection plate, and the strip holes 9 are arranged along the vertical direction;

[0054] The sliding connection plate 3 is connected to the friction plate 2 and the embedded plate 1 through a plurality of first connection members 7 vertically passing through the strip holes 9. The sliding connection plate 3 can slide up and down using the strip holes 9 as sliding grooves.

[0055] In this embodiment, a plurality of connecting holes are provided on the friction plate 2, and each first connecting member 7 passes through a strip hole 9 and a connecting hole in sequence to be connected to the embedded member 1;

[0056] When the shear wall is subjected to horizontal force, the deformation of the first wall and the second wall in the vertical direction drives the sliding connection plate to slide relative to the friction plate 2 and the embedded plate 1 with the strip hole 9 as a sliding groove.

[0057] The first connecting member 7 is a high-strength bolt, and a row of bolt holes are opened on both sides of the friction plate 2 and the embedded plate 1 for connecting the first connecting member 7; the strip holes 9 are located on both sides of the sliding connecting plate 3, and the strip holes 9 on each side correspond to multiple bolt holes, and multiple high-strength bolts pass through the strip holes 9 and the bolt holes on the friction plate 2 in sequence and are connected to the bolt holes on the embedded plate 1; the multiple high-strength bolts are arranged in a row along the strip holes 9, and the bolt heads of the high-strength bolts are located on the opposite side of a pair of sliding connecting plates 3 to provide pre-tightening force to the sliding connecting plates 3;

[0058] When the shear wall is subjected to horizontal force, the top of the first wall 11 or the second wall 12 is deformed and displaced by the horizontal force, causing vertical displacement between them. Since the embedded plate 1 is fixedly connected to the first wall 11 or the second wall 12, the relative movement of the first wall 11 or the second wall 12 in the vertical direction drives the sliding connecting plate 3 to slide with the strip hole 9 as the sliding groove. The friction plate 2 provides friction between the sliding connecting plate 3 and the embedded plate 1 to achieve a better effect.

[0059] In this embodiment, the number of bolt holes in each column on both sides of the friction plate 2 and the embedded plate 1 is four, each bolt hole is used to connect the first connecting member 7, and the four first connecting members 7 corresponding to each column of bolt holes are evenly distributed in a strip hole 9.

[0060] In this embodiment, the friction plate 2 is made of rubber.

[0061] In this embodiment, a pair of anti-shear plates 6 are further included. The anti-shear plates 6 are vertically connected to the embedded plate 1 and are located in the first wall or the second wall.

[0062] Each embedded plate 1 is symmetrically pre-installed in the first wall or the second wall through a plurality of symmetrically arranged fixing parts 5, namely anchor bolts and a shear plate 6, so that the embedded plate 1 and the wall become a whole, and the embedded plate 1 in the first wall 11 and the embedded plate 1 in the second wall 12 are symmetrically arranged.

[0063] In this embodiment, a pair of ribs 4 are provided in the middle of each sliding connection plate 3, and the ribs 4 of the pair of sliding connection plates 3 are plugged into each other. The spacing between the pair of ribs 4 of the first sliding connection plate is smaller than the spacing between the pair of ribs 4 of the second sliding connection plate.

[0064] In this embodiment, a plurality of mounting holes are provided on the rib plates 4, and two pairs of rib plates 4 are connected to each other via second connecting members 8 and welding members 10 passing through the mounting holes.

[0065] In this embodiment, the second connecting member 8 is a bolt, and the welded member 10 is formed by plug welding. There are multiple mounting holes, some of which are used for connecting bolts, and the other parts are used for forming the welded member 10 by plug welding.

[0066] In this embodiment, the number of the mounting holes is seven, two of which are used to connect the second connecting member 8, and the other five are used for welding.

[0067] A pair of sliding connecting plates are connected to each other through the second connecting member 8 and the welding member 10, so that the first damping device and the second damping device form a damping structure as a whole, thereby realizing the overall performance of the assembled shear wall structure.

[0068] In this embodiment, the size of the embedded plate 1 is 150 mm × 300 mm × 15 mm;

[0069] The size of the friction plate is 150mm×300mm×5mm;

[0070] The size of the sliding connection plate is 150mm×300mm×10mm, the rib length is 45mm, the spacing between a pair of ribs 4 of the first sliding connection plate is 40mm, the spacing between a pair of ribs 4 of the second sliding connection plate is 62mm, and the strip hole is 280mm long.

[0071] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An energy-absorbing vertical joint assembled shear wall node, characterized in that: The node comprises a first wall (11), a second wall (12) and a damping structure, wherein the first wall (11) is perpendicular to the second wall (12), and the damping structure comprises a pair of embedded plates (1), a pair of sliding connection plates (3) and a pair of friction plates (2), wherein the embedded plates (1) are connected to the first wall (11) or the second wall (12), each of the friction plates (2) is arranged between one of the embedded plates (1) and one of the sliding connection plates (3), and the sliding connection plates (3) are slidably connected to the friction plates (2) and the embedded plates (1), and the pair of sliding connection plates (3) are connected to each other; Each of the sliding connection plates (3) is provided with a pair of strip-shaped holes (9), and the strip-shaped holes (9) are arranged in the vertical direction; The sliding connection plate (3) is connected to the friction plate (2) and the embedded plate (1) via a plurality of first connection members (7) vertically passing through the strip-shaped holes (9), and the sliding connection plate (3) can slide up and down using the strip-shaped holes (9) as sliding grooves; The friction plate (2) is provided with a plurality of connection holes, and each of the first connection members (7) passes through one of the strip holes (9) and one of the connection holes in sequence to be connected to the embedded plate (1); When the shear wall is subjected to horizontal force, the deformation of the first wall (11) and the second wall (12) in the vertical direction drives the sliding connection plate (3) to slide relative to the friction plate (2) and the embedded plate (1) using the strip hole (9) as a sliding groove; A pair of ribs (4) is provided in the middle of each sliding connection plate (3), and the ribs (4) of the pair of sliding connection plates (3) are plugged into each other; The rib plates (4) are provided with a plurality of mounting holes, and two pairs of the rib plates are connected to each other via second connecting pieces (8) passing through the mounting holes and welding pieces (10).

2. The energy dissipation vertical joint assembled shear wall node according to claim 1 is characterized in that: The sliding connection plate (3) is arranged parallel to the embedded plate (1) and the friction plate (2); one of the embedded plates (1) is connected to the wall surface of the first wall (11) through a plurality of vertically connected fixing members (5); and the other embedded plate (1) is fixedly connected to the side surface of the second wall (12) through a plurality of vertically connected fixing members (5).

3. The energy dissipation vertical joint assembled shear wall node according to claim 2 is characterized in that: The fixing member (5) is an anchor bolt.

4. The energy dissipation vertical joint assembled shear wall node according to claim 2 is characterized in that: It also comprises a pair of shear-resistant plates (6), wherein the shear-resistant plates (6) are vertically connected to the embedded plates (1) and are located inside the first wall (11) or the second wall (12).

5. The energy dissipation vertical joint assembled shear wall node according to claim 1 is characterized in that: The second connecting member (8) is a bolt.

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