An interlocking prefabricated wall node connection structure

Abstract

This utility model relates to an interlocking prefabricated wall node connection structure, belonging to the technical field of prefabricated wall node connection. This interlocking prefabricated wall node connection structure includes: a lower wall, a lower embedded part, an H-shaped steel flange plate, an upper wall, a guide block, and a top block. The top block is fixed to one outer wall of the H-shaped steel flange plate. The guide block, on the side away from the H-shaped steel flange plate, movably abuts against a limiting block. The H-shaped steel flange plate is placed on the surface of the lower wall and slid, while the guide block slides towards the limiting block, tightly fitting the limiting block and the guide block. The upper wall is then hoisted out, and the limiting block slides along the limiting groove. The sliding of the guide surface of the H-shaped steel flange plate generates a horizontal component force that pushes the wall panel into place. The upper wall, through gravity, presses down on the H-shaped steel flange plate and the guide block. The gravity component is converted into lateral pressure to achieve frictional locking. Under seismic action, the plastic deformation of the guide block can absorb a large amount of energy, significantly improving seismic performance compared to traditional nodes.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated wall node connection technology, and in particular to an interlocking prefabricated wall node connection structure. Background Technology

[0002] Prefabricated buildings have become an important development direction for building industrialization due to their advantages such as high construction efficiency and low environmental pollution. Among them, the vertical connection nodes of prefabricated shear wall structures are a key link affecting the overall structural seismic performance and construction efficiency. Currently, the industry commonly uses methods such as grouting sleeve connections, post-cast strip connections, or bolt connections, but these technologies have problems such as high construction precision requirements, large amounts of wet work, or insufficient connection stiffness. With the proportion of prefabricated buildings in my country increasing to over 30% annually, the demand for standardized and efficient connection nodes is becoming increasingly urgent. In recent years, domestic and foreign scholars have successively developed new construction methods such as mortise and tenon connections and prestressed connections, but there is still room for improvement in terms of deformation adaptability and construction convenience.

[0003] Existing prefabricated buildings generally use grouting sleeve connections, post-pouring strip connections, and bolt dry connections during construction. Among these, the use of high-strength bolts to directly fasten the wall panel embedded parts is fast but the joint ductility is poor, making it prone to brittle failure under seismic action. Utility Model Content

[0004] Therefore, it is necessary to provide an interlocking prefabricated wall joint connection structure to address the problem that while high-strength bolts can be used to directly fasten embedded parts in prefabricated buildings, resulting in fast construction speed but poor joint ductility and susceptibility to brittle failure under seismic action.

[0005] An interlocking prefabricated wall node connection structure includes: a lower wall, a lower embedded part fixedly connected above the lower wall, an H-shaped steel flange plate slidably attached above the lower embedded part, and an upper wall movably connected above the H-shaped steel flange plate;

[0006] A guide block is provided on one side above the lower embedded part. A top block is movably sleeved inside one side of the guide block. The top block is fixed on one side of the outer wall of the H-shaped steel flange. The side of the guide block away from the H-shaped steel flange moves against a limit block.

[0007] In one embodiment, lower guard plates are fixedly connected to both sides of the lower wall, and the side of the two lower guard plates that are far apart from each other is on the same horizontal line as the outer walls of both sides of the H-shaped steel flange.

[0008] In one embodiment, upper protective plates are fixedly connected to both sides of the upper wall, and the side of the two upper protective plates that are far apart from each other is at the same horizontal line as the outer walls of both sides of the H-shaped steel flange.

[0009] In one embodiment, limit grooves are equidistantly provided on one inner wall of the H-shaped steel flange, and multiple limit blocks are fixedly connected at equal intervals on one outer wall of the upper wall, with the multiple limit blocks respectively inserted into the multiple limit grooves.

[0010] In one embodiment, a plurality of fixing bolts are fixedly inserted above the lower embedded part, and the upper end horizontal plane of the plurality of fixing bolts is lower than the upper surface of the lower embedded part.

[0011] In one embodiment, a fixing block is fixedly connected below the guide block, and the fixing block slides inside the lower embedded part. The guide block, the fixing block, and the H-shaped steel flange slide in the same direction.

[0012] In one embodiment, multiple limiting posts are movably inserted around the perimeter of the fixing block, and the limiting posts are temporarily connected to the lower embedded part.

[0013] Beneficial effects

[0014] 1. During the hoisting stage, the upper wall is lowered at a 10-20° tilt angle. The side of the upper wall with the limit block is placed inside the H-shaped steel flange plate, and the limit block is inserted into the limit groove. The upper wall is gradually straightened so that it is vertically inserted into the H-shaped steel flange plate. Then, the H-shaped steel flange plate is placed on the surface of the lower wall and slid. The guide block slides towards the side of the limit block and the limit block and guide block are tightly fitted. The upper wall is hoisted out and the limit block slides along the inside of the limit groove. The sliding of the guide surface of the H-shaped steel flange plate generates a horizontal component force to push the wall panel into place. The upper wall presses down on the H-shaped steel flange plate and guide block through gravity. The gravity component is converted into lateral pressure to achieve friction locking. Under seismic action, the plastic deformation of the guide block can absorb a large amount of energy. The seismic performance is greatly improved compared with traditional nodes. It is especially suitable for key seismic-resistant buildings such as hospitals and schools.

[0015] 2. Place the H-shaped steel flange plate on the surface of the lower wall and slide it. Fix it with anchor bolts. The anchor bolts are M chemical anchor bolts. The anchor bolts are inserted to a depth of more than mm and the pull-out force reaches the target value. A double nut anti-loosening device is set on the top of the anchor bolt. The upper end face is lower than the upper surface of the lower embedded part by mm. Leave space for secondary grouting layer. Use C non-shrink grout to fill it to ensure that the embedded part and the structure work together and improve the overall structural strength. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall assembly structure of this utility model;

[0019] Figure 3 For the present utility model Figure 2 Schematic diagram of the structure at point A;

[0020] Figure 4 This is a schematic diagram of the overall complete assembly structure of this utility model.

[0021] Figure label:

[0022] 100. Lower wall; 101. Lower guard plate; 200. Lower embedded part; 201. Fixing bolt; 202. Limiting block; 300. H-shaped steel flange plate; 301. Limiting groove; 302. Top block; 400. Upper wall; 401. Upper guard plate; 402. Limiting block; 500. Guide block; 501. Fixing block; 502. Limiting post. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0028] The following is combined with Figures 1-4 This invention describes the interlocking prefabricated wall node connection structure.

[0029] In one embodiment, an interlocking prefabricated wall node connection structure includes: a lower wall 100 and a guide block 500. A lower embedded part 200 is fixedly connected above the lower wall 100. An H-shaped steel flange plate 300 is slidably attached above the lower embedded part 200. An upper wall 400 is movably connected above the H-shaped steel flange plate 300. The guide block 500 is located on one side above the lower embedded part 200. A top block 302 is movably sleeved inside one side of the guide block 500. The top block 302 is fixed on one side of the outer wall of the H-shaped steel flange plate 300. The side of the guide block 500 away from the H-shaped steel flange plate 300 movably abuts against a limit block 202.

[0030] In this embodiment, both the lower wall 100 and the upper wall 400 are precast components. During the casting process, the lower embedded part 200 is placed in the lower wall 100 and rigidly connected to the lower wall 100 by chemical anchors to form a reference positioning seat. The web of the H-shaped steel flange plate 300 has a 45° guide groove, which forms a surface contact sliding pair with the trapezoidal guide rail of the lower embedded part 200. The H-shaped steel flange plate 300 and the top block 302 adopt an integrated wedge structure, which can slide along the inside of the guide block 500. The seismic performance is greatly improved compared with traditional nodes, and it is particularly suitable for key seismic fortification buildings such as hospitals and schools.

[0031] like Figure 1 , Figure 2 and Figure 3As shown, lower guard plates 101 are fixedly connected to both sides of the lower wall 100. The side of the two lower guard plates 101 that is far apart from each other is on the same horizontal line as the outer walls of both sides of the H-shaped steel flange plate 300. Upper guard plates 401 are fixedly connected to both sides of the upper wall 400. The side of the two upper guard plates 401 that is far apart from each other is on the same horizontal line as the outer walls of both sides of the H-shaped steel flange plate 300.

[0032] Both the lower guard plate 101 and the upper guard plate 401 are detachable structures. After the lower wall 100 and the upper wall 400 are connected to the H-shaped steel flange plate 300, the lower guard plate 101 and the upper guard plate 401 need to be installed so that the contact surfaces between the lower wall 100 and the upper wall 400 and the H-shaped steel flange plate 300 are relatively flat, which facilitates subsequent construction.

[0033] like Figure 2 , Figure 3 and Figure 4 As shown, limit grooves 301 are equidistantly provided on one inner wall of the H-shaped steel flange plate 300, and multiple limit blocks 402 are fixedly connected at equal intervals on one outer wall of the upper wall 400. The multiple limit blocks 402 are inserted into the multiple limit grooves 301 respectively. Multiple fixing bolts 201 are fixedly inserted above the lower embedded part 200, and the upper end of the multiple fixing bolts 201 is lower than the upper surface of the lower embedded part 200.

[0034] During the hoisting phase, the upper wall 400 is lowered at a 10-20° angle. One side of the upper wall 400 with the limiting block 402 is placed inside the H-shaped steel flange plate 300, and the limiting block 402 is inserted into the limiting groove 301. The upper wall 400 is gradually straightened so that it is vertically inserted into the H-shaped steel flange plate 300. The H-shaped steel flange plate 300 is then placed on the surface of the lower wall 100 and slid, and fixed by 16 fixing bolts 201. The fixing bolts 201 are M30 chemical anchors with an insertion depth of more than 350mm and a pull-out resistance reaching the target value. The top of the anchor is equipped with a double nut anti-loosening device, and the upper end face is 5mm lower than the upper surface of the lower embedded part 200 to reserve space for a secondary grouting layer. C60 non-shrink grout is used to fill the space to ensure that the embedded part and the structure work together.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, a fixing block 501 is fixedly connected below the guide block 500. The fixing block 501 slides inside the lower embedded part 200. The guide block 500, the fixing block 501 and the H-shaped steel flange plate 300 slide in the same direction. Multiple limiting posts 502 are movably inserted around the fixing block 501. The limiting posts 502 are temporarily connected to the lower embedded part 200.

[0036] In this embodiment, the limiting post 502 is temporarily fixed by inserting it into the lower embedded part 200. After the top block 302 on one side of the H-shaped steel flange plate 300 is inserted into the guide block 500, the guide block 500 is slid toward the side of the limiting block 202 and the limiting block 202 and the guide block 500 are tightly fitted together. The upper wall 400 is hoisted out and the limiting block 402 slides along the inside of the limiting groove 301. The sliding of the guide surface of the H-shaped steel flange plate 300 generates a horizontal component force to push the wall panel into place. The upper wall 400 presses down on the H-shaped steel flange plate 300 and the guide block 500 by gravity. The gravity component is converted into lateral pressure to achieve friction locking. Under the action of earthquake, the plastic deformation of the guide block 500 can absorb a large amount of energy and improve the seismic performance.

[0037] Working principle:

[0038] During the pouring process of the lower wall 100, the lower embedded part 200 is placed in it and rigidly connected to the lower wall 100 through chemical anchors. During the hoisting stage, the upper wall 400 is lowered at an angle of 10-20°. The side of the upper wall 400 with the installation limit block 402 is placed inside the H-shaped steel flange plate 300, and the limit block 402 is inserted into the limit groove 301. The upper wall 400 is gradually straightened so that it is vertically inserted into the H-shaped steel flange plate 300. Then the H-shaped steel flange plate 300 is placed on the surface of the lower wall 100 and slid.

[0039] The guide block 500 slides towards the limiting block 202, and the limiting block 202 and the guide block 500 are tightly fitted together. The upper wall 400 is hoisted out. The limiting block 402 slides along the limiting groove 301. The sliding of the H-shaped steel flange plate 300 guide surface generates a horizontal component force to push the wall panel into place. The upper wall 400 presses down on the H-shaped steel flange plate 300 and the guide block 500 by gravity. The gravity component is converted into lateral pressure to achieve friction locking. Under the action of earthquake, the plastic deformation of the guide block 500 can absorb a large amount of energy. The seismic performance is greatly improved compared with traditional nodes. It is especially suitable for key seismic fortification buildings such as hospitals and schools.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. An interlocking prefabricated wall node connection structure, characterized in that, include: The lower wall (100) is fixedly connected to the upper part of the lower wall (100), and an H-shaped steel flange plate (300) is slidably attached to the upper part of the lower embedded part (200). An upper wall (400) is movably connected to the upper part of the H-shaped steel flange plate (300). A guide block (500) is provided on one side above the lower embedded part (200). A top block (302) is movably sleeved inside one side of the guide block (500). The top block (302) is fixed on one side of the outer wall of the H-shaped steel flange (300). The side of the guide block (500) away from the H-shaped steel flange (300) movably abuts against the limit block (202).

2. The interlocking prefabricated wall node connection structure according to claim 1, characterized in that, The lower wall (100) is fixedly connected to both sides of the lower guard plate (101), and the side of the two lower guard plates (101) that are far apart from each other is on the same horizontal line as the outer walls of both sides of the H-shaped steel flange plate (300).

3. The interlocking prefabricated wall node connection structure according to claim 1, characterized in that, Upper wall (400) is fixedly connected to both sides of upper guard plate (401), and the side of the two upper guard plates (401) that are far apart from each other is on the same horizontal line as the outer walls of both sides of the H-shaped steel flange plate (300).

4. The interlocking prefabricated wall node connection structure according to claim 3, characterized in that, Limiting grooves (301) are provided at equal intervals on one inner wall of the H-shaped steel flange (300), and multiple limiting blocks (402) are fixedly connected at equal intervals on one outer wall of the upper wall (400), and the multiple limiting blocks (402) are respectively inserted into the multiple limiting grooves (301).

5. The interlocking prefabricated wall node connection structure according to claim 1, characterized in that, Multiple fixing bolts (201) are fixedly inserted above the lower embedded part (200), and the upper horizontal plane of the multiple fixing bolts (201) is lower than the upper surface of the lower embedded part (200).

6. The interlocking prefabricated wall node connection structure according to claim 1, characterized in that, A fixing block (501) is fixedly connected below the guide block (500). The fixing block (501) slides inside the lower embedded part (200). The sliding directions of the guide block (500), the fixing block (501) and the H-shaped steel flange plate (300) are the same.

7. The interlocking prefabricated wall node connection structure according to claim 6, characterized in that, Multiple limiting posts (502) are movably inserted around the fixed block (501), and the limiting posts (502) are temporarily connected to the lower embedded part (200).

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