CN209907608U - Prefabricated Shear Wall Connection Nodes - Google Patents

Abstract

The utility model discloses an assembled shear wall connection node, comprising: a first connection node structure, wherein the first connection node structure comprises: a first end plate and a first sleeve assembly welded on the first end plate, which penetrates through the first end plate. The upper and lower surfaces of the first end plate are provided with uniformly arranged first holes, and the reserved longitudinal ribs are connected to the first end plate through the first holes; the second connection node structure includes: the second end plate and the welding The second sleeve assembly on the second end plate is provided with second holes evenly arranged through the upper and lower surfaces of the second end plate, and the reserved longitudinal ribs are connected to the second end plate through the second holes; the second sleeve assembly It is sleeved on the first sleeve assembly, so that the first connecting node structure is connected with the second connecting node structure. The utility model can solve the problems that the existing assembled reinforced concrete shear wall connection nodes are difficult to overlap due to the large number of steel bars, and the quality of the overlap cannot be guaranteed, the installation is convenient and rapid, and the construction time and construction difficulty are greatly reduced.

Description

Prefabricated Shear Wall Connection Nodes

technical field

The utility model belongs to the technical field of prefabricated components and structures in civil engineering, and relates to a method capable of solving the problem of the existing prefabricated concrete shear wall steel grouting sleeve connection joints, with reliable mechanical properties, convenient and rapid installation, and greatly reduced construction time and cost. Manipulatively difficult prefabricated shear wall connection nodes.

Background technique

With the continuous acceleration of urbanization speed and urban rhythm, the severe situation of construction industry resources, the continuous improvement of people's awareness of environmental protection, the design concept of fast, efficient, green and low-carbon, energy saving and emission reduction has gradually become the design development direction of the construction industry, and among them The prefabricated building is the product of this design concept. The prefabricated shear wall is the key stress component in the prefabricated building, which undertakes the main function of horizontal and vertical loads.

The prefabricated concrete shear wall structure refers to the whole or part of the prefabricated wall panel components, and the concrete shear wall structure is formed by post-casting concrete and cement-based grouting material through reliable connection methods. The prefabricated shear wall structure has the advantages of saving labor costs, reducing noise and dust pollution at the construction site, shortening the construction period, good product quality control, high production efficiency, and high material utilization, and is widely used in the field of prefabricated buildings.

The design of high-rise prefabricated integral shear wall structures and multi-storey prefabricated shear wall structures shall comply with the current national standards "Technical Specifications for Prefabricated Concrete Structures" JGJ1 and "Technical Standards for Prefabricated Concrete Buildings" GB/T51231. In the structural design of prefabricated concrete shear walls, it is emphasized to strengthen the integrity of the structure, that is, to ensure that the post-cast concrete and the prefabricated wall panels form a whole and work together to achieve the same goal as cast-in-place. The guarantee of its integrity is reflected in the connection nodes between the prefabricated components of the shear wall, so it is very important for the prefabricated shear wall structure to make the structural joints bear reliable force and meet the performance standards.

At present, in the splicing node of prefabricated reinforced concrete shear wall, the common practice inside the shear wall is to reserve "mustache bars" at one end and holes at the other end. After installation and alignment on site, use sleeve grouting connection or anchoring connect. Therefore, at this stage, most of the connection nodes of reinforced concrete shear walls have the following shortcomings:

1. Since the shear wall is equipped with multiple rows of dense longitudinal stress steel bars, a large number of reserved steel bars and holes are left at the nodes of the traditional assembled shear wall. Otherwise, it will be necessary to re-groove and open holes, which will increase the difficulty of grouting construction, and the grouting compactness will pose a safety hazard and even affect the stability of the structure;

2. Although it is factory-produced, the prefabricated shear wall panel components may also have certain dimensional deviations. At the same time, due to human errors during transportation and on-site construction, there are deformation cracks in the corners of the components, and the errors during assembly are too large or The phenomenon that cannot be aligned;

3. Usually the external cladding plate is used as the outer form of the shear wall, and sometimes too few holes are reserved for the tension screw, which will cause the phenomenon that the cladding plate moves outwards when pouring concrete;

Therefore, there is an urgent need for a prefabricated shear wall connection node that can solve the problems of existing prefabricated concrete shear wall connection nodes, is convenient and quick to install, and greatly reduces construction time and operation difficulty.

Utility model content

The purpose of the utility model is to provide a prefabricated shear wall connection that can solve the problem of the existing prefabricated concrete shear wall steel bar grouting sleeve connection joint, has reliable mechanical properties, is convenient and quick to install, and greatly reduces construction time and operation difficulty. node.

In order to achieve the above purpose, the technical solution provided by the present utility model is to provide an assembled shear wall connection node, including:

A first connection node structure, the first connection node structure includes: a first end plate and a first sleeve assembly welded on the first end plate; a first hole, a reserved longitudinal rib is connected to the first end plate through the first hole;

A second connection node structure, the second connection node structure includes: a second end plate and a second sleeve assembly welded on the second end plate; a second hole, a reserved longitudinal rib is connected to the second end plate through the second hole;

The second sleeve assembly is sleeved on the first sleeve assembly, so that the second connection node structure is connected with the first connection node structure.

The first connection node structure is connected to the upper surface of the lower shear wall through the first end plate, and the second connection node structure is connected to the lower surface of the upper shear wall through the second end plate, The inner diameter of the second sleeve assembly is larger than the outer diameter of the first sleeve assembly.

The reserved longitudinal rib is provided with a threaded structure, and after the reserved longitudinal rib passes through the first hole or the second hole, the first end plate or the second end plate is respectively locked by a nut.

The first bushing assembly includes a plurality of small bushings evenly arranged on the first end plate, and each of the small bushings is arranged independently of each other; the second bushing assembly includes a plurality of small bushings The large bushings are evenly arranged on the second end plate, and each of the large bushings is arranged independently of each other.

The first bushing assembly includes a plurality of small bushings evenly arranged on the first end plate, and two adjacent small bushings communicate with each other; the second bushing assembly includes A number of large casing bodies evenly arranged on the second end plate, two adjacent large casing bodies are penetrating each other, and a penetrating part of two adjacent large casing bodies is provided with trim board.

A number of circular steel bar protrusions uniformly arranged in the vertical direction are welded around the outer wall of the small casing body and around the inner wall of the large casing body.

The outer wall of the small casing body and the inner wall of the large casing body are welded with a plurality of vertical steel bar protrusions uniformly arranged in the circumferential direction.

The outer periphery of the first end plate and the second end plate is also covered with a node steel plate shell, a grouting port is provided below the node steel plate shell, and a grout outlet is provided above, and penetrates through the first casing assembly and the outer walls of the second casing assembly are provided with casing grouting ports.

The inner wall of the node steel plate shell and/or the outer wall of the large casing body is also provided with stiffening ribs.

Welding legs are also welded under the large sleeve body and at the end plate.

The utility model inherits the advantages of the prefabricated building, the pouring of the precast concrete shear wall, the welding of the casing assembly and the end plate, etc. are all completed in the factory, and only a small amount of construction work needs to be carried out on site, which not only speeds up the construction progress, but also Save manpower and material resources. The middle-joint steel plate shell of the utility model can replace the wooden formwork as a permanent formwork for grouting, which reduces the construction cost and construction difficulty and avoids the waste of construction auxiliary materials. The utility model satisfies the structural anti-seismic requirements of "strong nodes and weak components" in engineering.

The present invention will become clearer from the following description in conjunction with the accompanying drawings, which are used to explain embodiments of the present invention.

Description of drawings

Fig. 1 is a schematic diagram showing an embodiment of the connection node of the assembled shear wall of the present invention.

Figure 2 shows a cross-sectional structural view of the connection node of the fabricated shear wall shown in Figure 1 .

FIG. 3 a is a cross-sectional structural view of the upper half of FIG. 2 .

FIG. 3 b is a cross-sectional structural view of the lower half of FIG. 2 .

FIG. 4 is a schematic diagram of an embodiment of a first connection structure.

Figure 5a is a schematic diagram of one embodiment of a second connection structure.

FIG. 5b is a schematic diagram of another embodiment of the second connection structure.

Detailed ways

Embodiments of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals represent like elements. As mentioned above, the technical solution provided by the present invention is to provide an assembled shear wall connection node 100 as shown in Figures 1 and 2, including:

3a and 4, firstly, the first connection node structure 50a will be described. The first connection node structure 50a includes: a first end plate 1 and a first sleeve assembly 2 welded on the first end plate 1, There are first holes 3 evenly arranged through the upper and lower surfaces of the first end plate 1, and the reserved longitudinal ribs 7 are connected to the first end plate 1 through the first holes 3;

As shown in FIGS. 3b and 5a, the second connection node structure 50b is described next. The second connection node structure 50b includes: a second end plate 4 and a second sleeve assembly welded on the second end plate 4 5. There are second holes 6 evenly arranged through the upper and lower surfaces of the second end plate 4, and the reserved longitudinal ribs 7 are connected to the second end plate 4 through the second hole 6;

Referring to FIG. 2 , the second sleeve assembly 5 is sleeved on the first sleeve assembly 2 , so that the second connection node structure 50b is connected with the first connection node structure 50a. The outer diameter of the first sleeve assembly 2 is smaller than the inner diameter of the second sleeve assembly 5 , so that the first sleeve assembly 2 is inserted into the second sleeve assembly 5 for connection.

3a and 3b, the first connecting node structure 50a is connected on the upper surface of the lower shear wall through the first end plate 1, and the second connecting node structure 50b is connected through the second end plate 4 on the upper surface of the lower shear wall. Located on the lower surface of the upper shear wall, the inner diameter of the second casing assembly 5 is larger than the outer diameter of the first casing assembly 2 . When the first sleeve assembly 2 is inserted into the second sleeve assembly 5, the optimal positions of the first sleeve assembly 2 and the second sleeve assembly 5 should be on the same central axis of symmetry .

In one embodiment, referring to FIGS. 3 a and 3 b , the reserved longitudinal ribs 7 are provided with a threaded structure, and after the reserved longitudinal ribs 7 pass through the first hole 3 or the second hole 6 , they also pass through the nut 8 respectively. The first end plate 1 or the second end plate 4 is locked. In this way, the first connection node structure 50a can be connected to the upper surface of the lower shear wall, and the second connection node structure 50b can be connected to the lower surface of the upper shear wall.

Referring to Figures 3a-5a, the first sleeve assembly 2 includes a plurality of small sleeve individuals 21 evenly arranged on the first end plate 1, and each of the small sleeve individuals 21 is provided independently of each other ; The second bushing assembly 5 includes a plurality of large bushings 51 evenly arranged on the second end plate 4, and each of the large bushings 51 is arranged independently of each other. In the embodiment shown in Figs. 3a-5a, the small sleeve bodies 21 are arranged on the first end plate 1 in an inline shape; the large sleeve bodies 51 are also arranged in an inline shape on the first end plate 1. on the second end plate 4 . It should be noted that, the small cannula individuals 21 and the large cannula individuals 51 may also be arranged in other manners, such as in a rectangular array.

In one embodiment, the first bushing assembly includes a plurality of small bushings evenly arranged on the first end plate, and two adjacent small bushings are connected to each other (not shown in the figure). Show);

Referring to Fig. 5b, the second sleeve assembly 5a includes a plurality of large sleeve bodies 51a evenly arranged on the second end plate 4a, and two adjacent large sleeve bodies 51a are connected to each other, and A trim plate 13 is provided at the penetrating position of the two adjacent large casing bodies 51a. Let each of the small casing individual and the large casing individual 51a communicate with each other, the function of which is to ensure the circulation of the grouting material during grouting, and the first casing assembly and the second casing assembly can be grouted enough. The grouting material can play a good tie effect through the cladding plate 13, constrain the filling of concrete, and improve the shear bearing capacity of the joint.

Referring to Figures 3a-5a, a plurality of circular steel bar protrusions 9 uniformly arranged in the vertical direction are welded around the outer wall of the small casing body 21 and around the inner wall of the large casing body 51. It should be noted that the circular reinforcement protrusions 9 are welded to the outer wall of the small casing body 21, and/or welded to the inner wall of the large casing body 51, and the circular reinforcement protrusions are provided. 9, the occlusal force between the second sleeve assembly 5 and the first sleeve assembly 2 can be greatly improved, so that the entire node exhibits a strong tie force when subjected to tension.

In one embodiment, the outer wall of the small casing body and the inner wall of the large casing body are welded with a plurality of vertical steel bar protrusions uniformly arranged in the circumferential direction. The vertical reinforcement can increase the mechanical strength of the small casing body and the large casing body, and can greatly improve the adhesion between the small casing body and the large casing body and the grouting material.

Referring to FIG. 2 , the periphery of the first end plate 1 and the second end plate 4 is also covered with a node steel plate shell 10 , a grouting port 11 is provided below the node steel plate shell 10 , and a grout outlet 12 is provided above. , and the outer walls of the first casing assembly 2 and the second casing assembly 5 are provided with casing grouting ports (not shown in the figure). It should be noted that, the grouting port 11 is provided below the node steel plate shell 10 and the grout outlet 12 is provided above, so as to ensure that the grouting material fills the inner space of the entire node.

Referring to FIG. 3 b , the inner wall of the node steel plate shell 10 and/or the outer wall of the large casing body 51 is further provided with a stiffening rib 14 . By arranging the stiffening ribs 14, the mechanical strength of the joint steel plate shell 10 and the large casing body 51 can be effectively improved, the concrete filling can be restrained, and the shear bearing capacity of the joint can be improved.

Referring to Fig. 5b, a welding leg 15 is also welded under the large sleeve body 51a and the second end plate 4a. The welding legs 15 can enhance the firmness of the connection between the large casing body 51a and the second end plate 4a, and can greatly improve the shear bearing capacity of the joint.

The specific assembly sequence of the connection node of the assembled shear wall of the present utility model is described below:

1. Lower shear wall: Weld the small casing with steel protrusions on the outer wall to the first end plate, and the first end plate and the concrete shear wall are connected by the reserved longitudinal bars in the concrete through bolts;

2. Upper shear wall: Weld the large casing body with steel protrusions welded on the inner wall to the second end plate, and the second end plate and the concrete shear wall are connected by the reserved longitudinal bars in the concrete through bolts;

3. After the upper and lower shear walls are connected together, the grouting material is poured through the grouting port under the steel plate shell. After the maintenance is completed, the node of the utility model is formed.

The above disclosures are only the preferred embodiments of the present invention, of course, the scope of the rights of the present invention cannot be limited by this. Therefore, the equivalent changes made according to the scope of the patent application of the present invention are still within the scope of the present invention. .

Claims (10)

1. a prefabricated shear wall connection node, is characterized in that, comprises: A first connection node structure, the first connection node structure includes: a first end plate and a first sleeve assembly welded on the first end plate; a first hole, a reserved longitudinal rib is connected to the first end plate through the first hole; A second connection node structure, the second connection node structure includes: a second end plate and a second sleeve assembly welded on the second end plate; a second hole, a reserved longitudinal rib is connected to the second end plate through the second hole; The second sleeve assembly is sleeved on the first sleeve assembly, so that the second connection node structure is connected with the first connection node structure. 2. The prefabricated shear wall connection node according to claim 1, wherein the first connection node structure is connected on the upper surface of the lower shear wall through the first end plate, and the first connection node structure is located on the upper surface of the lower shear wall. The two connecting node structures are connected on the lower surface of the upper shear wall through a second end plate, and the inner diameter of the second casing assembly is larger than the outer diameter of the first casing assembly. 3. The prefabricated shear wall connection node according to claim 1 or 2, wherein the reserved longitudinal reinforcement is provided with a threaded structure, and the reserved longitudinal reinforcement passes through the first hole or the second hole. After the hole is made, the first end plate or the second end plate is also locked by nuts respectively. 4. The prefabricated shear wall connection node according to claim 2, wherein the first casing assembly comprises a plurality of small casing bodies evenly arranged on the first end plate, and each The small bushings are arranged independently of each other; the second bushing assembly includes a plurality of large bushings evenly arranged on the second end plate, and each of the large bushings is mutually Independent settings. 5. The assembled shear wall connection node according to claim 2, wherein the first casing assembly comprises a plurality of small casings evenly arranged on the first end plate, and adjacent to each other. The two small bushings are interconnected; the second bushing assembly includes a plurality of large bushings evenly arranged on the second end plate, and two adjacent large bushings are They communicate with each other, and a trim plate is provided at the penetrating position of the two adjacent large casing bodies. 6. The prefabricated shear wall connection node according to claim 4, characterized in that, around the outer wall of the small casing body, and around the inner wall of the large casing body are welded with a number of vertical Circular rebar protrusions with uniform orientation. 7. The prefabricated shear wall connection node according to claim 4, wherein the outer wall of the small casing body and the inner wall of the large casing body are welded with a plurality of vertical pipes uniformly arranged in the circumferential direction. Straight bars are raised. 8 . The assembled shear wall connection node according to claim 4 , wherein the periphery of the first end plate and the second end plate is also covered with a node steel plate shell, and the lower part of the node steel plate shell is arranged. 9 . There is a grouting port, and a grout outlet is arranged above, and the outer walls of the first casing assembly and the second casing assembly are provided with casing grouting ports. 9 . The assembled shear wall connection node according to claim 8 , wherein the inner wall of the steel plate shell of the node and/or the outer wall of the individual large casing is further provided with stiffening ribs. 10 . The prefabricated shear wall connection node according to any one of claims 4 to 9, characterized in that a welding leg is also welded under the large casing body and at the end plate.

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