Vertical connecting node for upper layer and lower layer of fabricated shear wall

Abstract

The utility model provides an assembly type shear wall upper and lower layer vertical connection node, which relates to the technical field of shear walls, and comprises a plurality of groups of shear wall units connected with each other, each shear wall unit comprises an inner wall plate and an outer wall plate, a transverse rib is arranged between each inner wall plate and each outer wall plate, and a connecting piece is connected between the upper and lower adjacent shear walls. The connecting piece comprises a lower baffle, a first drag hook is connected to the lower baffle, a pull rod is fixedly connected to the top of the lower baffle, a threaded section is arranged at the upper end of the pull rod, a second drag hook is connected to the upper baffle, and a nut used for tightening the distance between the upper baffle and the lower baffle is in threaded connection with the threaded section. According to the design, the connecting pieces are adopted as connecting joints between the upper shear wall unit and the lower shear wall unit, the transverse bars between the upper shear wall unit and the lower shear wall unit are tied, the connecting mode is more efficient and faster, a steel framework can be formed in the subsequent pouring process, the connecting strength between the vertical shear walls is firmer, and the shear resistance is better.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shear walls, in particular to an upper and lower vertical connecting joint of a fabricated shear wall. BACKGROUND

[0002] In building structure engineering, shear walls, as an important structural element, are widely used in high-rise buildings to resist wind load and seismic load. The reliable connection between the upper and lower shear walls is crucial to the stability and safety of the entire structure.

[0003] The traditional shear wall connection method usually adopts the method of binding steel bars and then pouring concrete, such as the application number CN116876671A, a kind of upper and lower wall connecting structure and construction method of fabricated shear wall, which connects the vertical shear walls by binding, binds the steel bars exposed to the shear wall, then sets up a formwork, pours concrete between the two shear walls, and completes the construction of the shear wall after curing and shaping. This method has certain disadvantages. By binding, the stress points are concentrated between the two shear walls, and the concentrated stress may cause excessive local stress of the shear wall, which may affect the overall stability and durability of the structure, thereby reducing the overall shear capacity of the wall. UTILITY MODEL CONTENT

[0004] The present application aims to at least partially solve one of the technical problems in the related art. To this end, the present application proposes an upper and lower vertical connecting joint of a fabricated shear wall.

[0005] The technical solution of the present application to solve the technical problem is as follows:

[0006] The present application proposes an upper and lower vertical connecting joint of a fabricated shear wall, which comprises a plurality of connected shear wall units, each shear wall unit comprising an inner wall plate and an outer wall plate, and at least two rows of horizontal ribs between the inner wall plate and the outer wall plate. A plurality of connecting elements are connected between the upper and lower adjacent shear walls, the connecting element comprising a lower baffle, at least one first hook connected to the lower baffle and connected to the horizontal ribs in the lower shear wall, a pull rod fixedly connected to the top of the lower baffle, the upper end of the pull rod having a threaded section, an upper baffle freely penetrating the pull rod, at least one second hook connected to the upper baffle and connected to the horizontal ribs in the upper shear wall, and a nut threadedly connected to the threaded section to tighten the distance between the upper baffle and the lower baffle.

[0007] Preferably, the bottom of the lower baffle is connected to two groups of first hooks, and the two first hooks are symmetrically arranged and connected to two parallel horizontal ribs.

[0008] Preferably, the upper baffle top is connected with two groups of second hooks, and the two second hooks are symmetrically arranged and connected with two parallel horizontal bars.

[0009] Preferably, the pull rod is located between the two second hooks after penetrating the upper baffle.

[0010] Preferably, a plurality of groups of I-shaped steel are arranged on the outer wall plate and the inner wall plate in an interval and staggered manner, one end of each group of I-shaped steel is embedded and fixed in the inner wall plate or the outer wall plate, and the other end of the I-shaped steel abuts against the inner wall of the inner wall plate or the outer wall plate.

[0011] Preferably, two rows of perforations are formed on the web of the I-shaped steel, and a horizontal bar is arranged in the perforations.

[0012] Preferably, the first hook, the second hook and the pull rod are made of threaded steel.

[0013] Preferably, the pull rod and the lower baffle are fixedly connected in a welding manner.

[0014] The above technical scheme has the following advantages or beneficial effects:

[0015] 1. In the utility model, the connecting piece is used as the connecting joint between the upper and lower shear wall units, the horizontal bars between the upper and lower shear wall units are pulled together, the connecting mode is more efficient and faster, a steel framework can be formed in the subsequent pouring process, the connecting strength between the vertical shear walls is more firm, and the shear capacity is better.

[0016] 2. In the utility model, the connecting piece is used to connect the two vertical shear walls, the two vertical shear walls can become a whole in the splicing and pouring process, the continuity is better, and the structural strength is improved; only one connecting seam is arranged between the upper and lower wall plates, and therefore the shear capacity is improved.

[0017] 3. In the utility model, the shear wall unit comprises an inner wall plate and an outer wall plate, I-shaped steels are arranged in an interval and staggered manner between the inner wall plate and the outer wall plate, the other end of the I-shaped steel abuts against the opposite wall plate, the horizontal bar penetrates the I-shaped steel, and the tightness of the connection between the two wall plates can be further improved by cooperating with the connecting piece; during pouring, the I-shaped steel, the horizontal bar and the connecting piece can all serve as the steel framework, and the structural strength of the whole shear wall is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, illustrate the application together with the embodiments, and do not constitute a limitation on the application.

[0019] Figure 1 is a connecting joint structure schematic view between the upper and lower shear wall units of the utility model.

[0020] Figure 2 is Figure 1 Figure 2 is a structural diagram of the connecting piece installation process in the inner wall plate.

[0021] Figure 3 is Figure 2 Figure 3 is a top structural schematic diagram in the connecting piece.

[0022] Figure 4 is Figure 1 Figure 4 is a three-dimensional structural schematic diagram of the connecting piece.

[0023] Figure 5 is a structural schematic diagram after pouring concrete between the inner wall plate and the outer wall plate.

[0024] Explanation of reference signs:

[0025] 1, outer wall plate; 2, inner wall plate; 3, I-shaped steel; 4, cross rib; 5, lower baffle; 6, first pull hook; 7, pull rod; 8, upper baffle; 9, second pull hook; 10, nut; 11, through hole. DETAILED DESCRIPTION

[0026] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0027] It should be noted that in the description of the present application, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating the direction or positional relationship of the terms are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0028] In addition, it should also be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0029] As Figures 1 to 5As shown, the embodiment proposes a vertical connecting joint of assembled shear wall upper and lower layers, which comprises a plurality of connected shear wall units, the shear wall unit comprises an inner wall panel 2 and an outer wall panel 1, and there are at least two rows of transverse ribs 4 between the inner wall panel 2 and the outer wall panel 1; wherein the upper and lower adjacent shear walls are jointly connected with a plurality of connecting pieces, the connecting piece comprises a lower baffle 5, the lower baffle 5 is connected with at least one group of first hooks 6, which are connected with the transverse ribs 4 in the lower shear wall, the lower baffle 5 is fixedly connected with a pull rod 7 at the top, the upper end of the pull rod 7 has a threaded section, and the pull rod 7 is freely penetrated by an upper baffle 8, the upper baffle 8 is connected with at least one group of second hooks 9, which are connected with the transverse ribs 4 in the upper shear wall, and the threaded section is threadedly connected with a nut 10 for tightening the distance between the upper baffle 8 and the lower baffle 5.

[0030] In some construction projects, prefabricated shear walls are used, and the upper and lower ends of the shear walls have protruding steel bars. After binding the steel bars and supporting the formwork, pouring concrete can realize the connection between the upper and lower shear walls. This method has certain disadvantages in each link, such as the need for certain precision in the number and position of steel bars during the binding process to ensure the strength after forming; during pouring, generally vibrating at the top, due to the obstruction of the shear wall at the top, the difficulty of vibrating is increased; after forming, the shear wall is connected in a segmented manner with two connecting seams on the upper and lower parts, which has a certain impact on the overall structural strength.

[0031] In this scheme, the outer wall panel 1 and the inner wall panel 2 are assembled on site, and the transverse ribs 4 between the two shear wall units are used to connect the upper and lower shear wall units. After the two shear wall units are initially spliced, the first hooks 6 are hooked around the transverse ribs 4 in the lower shear wall unit by holding the pull rod 7, then the upper baffle 8 is sleeved on the pull rod 7, the second hooks 9 in the upper baffle 8 are hung on the transverse ribs 4 in the upper shear wall unit, then the two hooks are centered and tightened by screwing the nut 10, thereby realizing the connection between the upper and lower shear walls.

[0032] As can be seen, compared with the step of binding steel bars, the method of connecting the upper and lower shear wall units by two groups of hooks is more efficient, the connection strength is more firm, and the shear capacity is better. After connecting the upper and lower shear wall units by a plurality of connecting pieces, pouring concrete between the outer wall panel 1 and the inner wall panel 2, and after forming an integral whole, the connection method is good for improving the structural strength after pouring, the continuity of the concrete in the shear wall is good, and the shear capacity is enhanced.

[0033] As Figure 4As shown, in some embodiments, the bottom of the lower baffle 5 is commonly connected with two groups of first pull hooks 6, and the two first pull hooks 6 are symmetrically arranged and connected to the two parallel horizontal ribs 4 respectively; the top of the upper baffle 8 is commonly connected with two groups of second pull hooks 9, and the two second pull hooks 9 are symmetrically arranged and connected to the two parallel horizontal ribs 4 respectively. Two groups of pull hooks are arranged above and below respectively, and are connected to the two horizontal ribs 4 respectively, and more anchoring points are used to enhance the stability of the horizontal ribs 4, so as to avoid the outward deviation of the two wallboards during pouring of concrete; at the same time, the load can also be dispersed, and the overall bearing capacity and shear performance are improved.

[0034] Further, the pull rod 7 penetrates the upper baffle 8 and is located between the two second pull hooks 9, so as to maintain the symmetry and balance of the structure, which helps to ensure that the two pull hooks are evenly distributed when stressed, and avoids structural deflection or instability caused by asymmetry.

[0035] Reference Figure 3 In some embodiments, a plurality of groups of I-shaped steel 3 are arranged on the outer wallboard 1 and the inner wallboard 2 in a staggered manner, each group of I-shaped steel 3 is embedded in the inner wallboard 2 or the outer wallboard 1, and the other end of the I-shaped steel 3 abuts against the inner wall of the inner wallboard 2 or the outer wallboard 1. During pouring of concrete, the two wallboards are tightly connected through the I-shaped steel 3, and the overall shear capacity is enhanced.

[0036] Further, two rows of perforations 11 are formed on the web of the I-shaped steel 3, and steel bars are arranged in the perforations 11. The I-shaped steel 3 between the outer steel plate and the inner wallboard 2 is assembled rather than welded, which can eliminate the residual stress generated during welding and prevent the shear wall from deforming during welding, thereby improving the strength of the shear wall. In combination with the transversely arranged horizontal ribs 4, the tightness of the connection between the inner wallboard 2 and the outer wallboard 1 is improved, the overall mechanical performance is superior, and the shear capacity of the shear wall unit as a whole is improved.

[0037] During pouring of concrete between the upper and lower shear wall units, the stability between the outer wallboard 1 and the inner wallboard 2 is effectively improved through the cooperation of the I-shaped steel 3 and the horizontal ribs 4, and they are prevented from deviating to both sides due to the extrusion of concrete. Further, the two horizontal ribs 4 are pulled together by the above-mentioned connecting piece, which not only plays a role in connecting the upper and lower parts, but also pulls the outer wallboard 1 and the inner wallboard 2 additionally, thereby enhancing the overall tightness of the shear wall connection and ensuring the structural strength.

[0038] In some embodiments, the first pull hook 6, the second pull hook 9 and the pull rod 7 are all made of screw steel; the threads on the surface thereof increase the gripping force with the concrete, thereby improving the performance of the pull hook and the pull rod 7 when bearing the pulling force. The first pull hook 6 and the second pull hook 9 are respectively connected to the key parts of the structure, and effectively transfer and disperse the load through the firm grip and stable support, preventing the structure from deforming or displacing under the action of external force. The pull rod 7 serves as a connecting piece to tightly connect different structural parts to form a whole, thereby enhancing the shear capacity and overall rigidity of the structure. Since it is difficult to directly process the threaded section on the screw steel due to the hardness and toughness of the screw steel, a threaded column can be welded on the top of the pull rod 7 to form the threaded section.

[0039] Further, the pull rod 7 and the lower baffle 5 are fixedly connected by welding. The pull rod 7 and the lower baffle 5 serve as an important stress point, and the welding can provide strong bonding force and high durability, so that the pull rod 7 and the lower baffle 5 form a whole to effectively transfer and disperse the load.

[0040] The assembly method of the utility model comprises the following steps:

[0041] S1, prefabricating the inner wall plate 2 and the outer wall plate 1;

[0042] The template is erected, the I-beam 3 is placed in the template according to the designed position, then the concrete is poured, and the inner wall plate 2 and the outer wall plate 1 are formed after the concrete is cured;

[0043] S2, on-site construction;

[0044] The prefabricated inner wall plate 2 and the outer wall plate 1 are transported to the construction site, the shear wall unit is installed according to the design requirements, the inner wall plate 2 and the outer wall plate 1 are butt-jointed, the horizontal rib 4 is arranged in the perforation 11, and the steel framework is formed by the I-beam 3 and the horizontal rib 4;

[0045] Then the vertical assembly of the upper and lower shear wall units is carried out, as shown in Figure 2 and Figure 3 When the two shear wall units are butt-jointed, the first pull hook 6 is lowered into the lower shear wall unit by holding the pull rod 7, the pull rod 7 is rotated and pulled upwards, the first pull hook 6 hooks the two horizontal ribs 4, then the upper baffle 8 penetrates the pull rod 7, the second pull hook 9 on the upper baffle 8 is hung in the upper shear wall unit after the penetration, the nut 10 is matched and sleeved on the threaded section at the upper part of the pull rod 7, and the two pull hooks are tightened by rotating the nut 10;

[0046] After the upper and lower shear wall units are connected by the connecting pieces, the template is erected, the concrete is poured between the outer wall plate 1 and the inner wall plate 2, and the vertical connection of the upper and lower assembled shear walls is realized after the concrete is formed.

[0047] The above describes the specific embodiments of the application in combination with the drawings, but is not a limitation on the protection scope of the application. Various modifications or variations made by those skilled in the art on the basis of the technical solutions of the application without creative labor are still within the protection scope of the application.

Claims

1. An assembled shear wall upper and lower vertical connecting joint, comprising a plurality of connected shear wall units, the shear wall unit comprising an inner wall panel (2) and an outer wall panel (1), and having at least two rows of cross ribs (4) between the inner wall panel (2) and the outer wall panel (1), characterized in that: a plurality of connecting components are connected between the upper and lower adjacent shear walls, the connecting component comprising a lower baffle (5), the lower baffle (5) being connected with at least one first pull hook (6) connected with the cross rib (4) in the lower shear wall, the lower baffle (5) being fixedly connected with a pull rod (7) having a threaded section at the upper end, and further comprising an upper baffle (8) freely penetrating the pull rod (7), the upper baffle (8) being connected with at least one second pull hook (9) connected with the cross rib (4) in the upper shear wall, and the threaded section being threadedly connected with a nut (10) for tightening the distance between the upper baffle (8) and the lower baffle (5).

2. The prefabricated shear wall upper and lower layer vertical connecting joint according to claim 1, characterized in that: The lower baffle (5) is connected with two groups of first pull hooks (6) at the bottom, the two first pull hooks (6) being symmetrically arranged and connected with two parallel cross ribs (4) respectively.

3. The prefabricated shear wall upper and lower layer vertical connecting joint according to claim 2, characterized in that: The upper baffle (8) is connected with two groups of second pull hooks (9) at the top, the two second pull hooks (9) being symmetrically arranged and connected with two parallel cross ribs (4) respectively.

4. The prefabricated shear wall upper and lower layer vertical connecting joint according to claim 3, characterized in that: The pull rod (7) penetrates the upper baffle (8) and is located between the two second pull hooks (9).

5. The prefabricated shear wall upper and lower layer vertical connection joint according to claim 1, characterized in that: The outer wall panel (1) and the inner wall panel (2) are alternately and intermittently arranged with a plurality of I-beams (3), each I-beam (3) being embedded and fixed in the inner wall panel (2) or the outer wall panel (1) at one end, and abutting against the inner wall of the inner wall panel (2) or the outer wall panel (1) at the other end.

6. The prefabricated shear wall upper and lower layer vertical connection joint according to claim 5, characterized in that: Two rows of perforations (11) are formed on the web of the I-beam (3), and the cross rib (4) is arranged in the perforation (11).

7. The prefabricated shear wall upper and lower layer vertical connection joint according to claim 1, characterized in that: The first pull hook (6), the second pull hook (9) and the pull rod (7) are all made of threaded steel.

8. The prefabricated shear wall upper and lower layer vertical connection joint according to claim 1, characterized in that: The pull rod (7) and the lower baffle (5) are fixedly connected by welding.

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