Prefabricated wallboard dry-method connection joint
By designing prefabricated wall panel dry connection nodes in prefabricated buildings, using the structure of misaligned connection boxes and bolts, the problems of complex wall panel connections and insufficient shear resistance in the prior art are solved, achieving high efficiency, strength and convenience wall panel connection.
Patent Information
- Application Number
- CN202323637364.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-29
AI Technical Summary
In existing prefabricated buildings, wall panel connection methods have problems such as complex operation, difficulty in checking the connection quality, insufficient shear resistance, and difficult to achieve rapid assembly and high-strength connection.
Design a prefabricated wall panel dry connection node, by setting multiple connection units inside and outside the wall, using the misaligned structure of the connecting box and bolts, multiple connection units are formed to improve the connection strength and earthquake resistance and shear resistance, and pass through the steel plate Welding and sealing strips enhance the sealing effect of the connection.
It improves the convenience of installation operation and connection strength, enhances the performance of earthquake resistance and shear resistance, reduces construction difficulty and cost, and achieves more efficient wall panel connection.
Smart Images
Figure CN222183718U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of assembly-type building connection nodes, in particular to a prefabricated wall panel dry-method connection node. Background Art
[0002] With the development and progress of science and technology, people's construction level is constantly improving. In order to reduce the intensity of manual labor, prefabricated buildings are constantly popular in the market. However, the connections between wall panels in prefabricated buildings are currently connected by wet method. This technology treats the connection nodes as cast-in-place, and reserves sufficient lap length for the upper and lower wall steel bars without prefabrication. After on-site lap, the area is poured again, but it is difficult to achieve. The cast-in-place part cannot be subjected to stress within 3 days after final setting, and the construction quality and progress will be affected.
[0003] There are also sleeve connections and grout anchor overlaps. This connection method is currently the most reliable prefabricated component connection method, but the sleeve connection has the following disadvantages: First, it is difficult to check the connection quality of the sleeve connection. Whether the grouting material in the sleeve is full requires ultrasonic testing, the sampling cost is high, and the sampling points are few; second, the maintenance conditions of the sleeve grouting material in this way are harsh, low temperature and high temperature will affect its solidification, and it takes 1 to 2 days of waiting time from the completion of grouting to its ability to bear force. It takes 7 to 28 days to fully reach the strength, and the advantage of rapid assembly of prefabricated buildings cannot be achieved.
[0004] In addition, there is also a connection through a rectangular bolt box, which can realize the installation of prefabricated components in low-rise buildings, but this connection method is complicated to operate, and the bolts are located in a deeper position of the box, which makes the installation more complicated; secondly, the shear resistance of the bolts that pass vertically through the connection seam is poor. If encountering loads such as earthquakes that will cause horizontal acceleration, there is a possibility of shear damage.
[0005] Therefore, the above-mentioned defects are technical problems that need to be solved urgently. Utility Model Content
[0006] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and to provide a prefabricated wall panel dry connection node which is convenient for installation and operation, has low setting cost, high connection structure strength, and outstanding earthquake and shear resistance.
[0007] The technical solution of the utility model is: a prefabricated wall panel dry connection node, including a wall body, the wall body including a first wall and a second wall connected by a connecting piece, a plurality of connection nodes are arranged between the first wall and the second wall, each connection node is provided with at least two connection units, the connection unit includes a connection box prefabricated in the inner side surface and / or the outer side surface of the first wall, and a corresponding connection box prefabricated in the outer side surface and / or the inner side surface of the second wall, and the connection boxes are fixedly connected by bolts.
[0008] Furthermore, a first steel plate connection box and a second steel plate connection box are provided on the inner and outer sides of the first wall, and the first steel plate connection box and the second steel plate connection box are staggered inside and outside. A third steel plate connection box and a fourth steel plate connection box are prefabricated on the outer and inner sides of the second wall, and the third steel plate connection box and the fourth steel plate connection box are staggered inside and outside. The first steel plate connection box and the third steel plate connection box are fixedly connected by a first bolt to form a first connection unit, and the second steel plate connection box and the fourth steel plate connection box are fixedly connected by a second bolt to form a second connection unit.
[0009] The utility model is composed of two connection boxes and a connection screw to form a unit, which are arranged in combination of two units, one positive and one negative. Each connection seam is arranged in several groups of two units, and more than two units can also be arranged as a group to ensure the connection strength between the wall panels. The connection box of this technology is shallower than the PK box system and is easier to install. The connection rod of this technology passes through the connection seam obliquely, and the way of bearing horizontal force is stronger, which effectively improves the seismic and shear resistance of the connection node.
[0010] Furthermore, the connection node is provided with 3-5 connection units, and the connection units are staggered inside and outside. Preferably, the connection node is provided with 3 or 4 connection units, which can ensure the connection strength of the connection node, and multiple connection units are convenient for dispersing the force of a single connection unit, thereby reducing damage to the wall at the connection.
[0011] Furthermore, the connection box is fixedly connected by welding steel plates and is in the shape of a right-angled triangle, which saves the space occupied by the connection box in the wall, and ensures the tensile strength of the wall through the oblique bolt connection.
[0012] Furthermore, the connection box is at an angle of 30-90° to the installation wall; preferably, the connection box is at an angle of 40-75° to the installation wall; more preferably, the connection box is at an angle of 45° or 50° to the installation wall. Using this angle range can ensure the connection strength between the connection box and the wall after installation, while ensuring that the installation of the bolts is not hindered by the setting or installation of the connection box.
[0013] Furthermore, the connection box is fixedly connected to the steel bars inside the wall by welding, thereby ensuring the connection strength between the connection box and the wall.
[0014] Furthermore, a tongue and groove is provided at the connection between the first wall and the second wall to improve the sealing effect of the connection between the walls.
[0015] Furthermore, a corresponding groove is provided in the tongue and groove, and a sealing strip is provided in the groove, which further improves the sealing effect between the walls and can also play a buffering role to avoid damage to the wall due to strong collision during installation.
[0016] Furthermore, at least two grooves are provided and arranged in parallel in a wave shape to form a plurality of sealing lines to ensure the connection and sealing effect, and also to reduce the extrusion of the wall caused by thermal expansion and contraction.
[0017] The utility model has the following characteristics: the utility model has a simple structure and ingenious design. Multiple connection nodes are arranged between the wall panels, and at least two connection units are arranged on each connection node. The connection units are arranged obliquely through connection boxes and bolts, which ensures the connection force area and force strength of the connection nodes, improves the convenience of installation operation of the connection units, and improves the seismic and shear resistance of the connection nodes.
[0018] The detailed structure of the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 - is a schematic diagram of the structure of the utility model;
[0020] Figure 2 - is a schematic diagram of the connection unit structure;
[0021] Figure 3 - Installation diagram for the connection unit;
[0022] 1-first wall, 2-second wall, 3-connecting node, 4-first steel plate connecting box, 5-sleeve, 6-third steel plate connecting box, 7-first bolt, 8-second steel plate connecting box, 9-second bolt, 10-fourth steel plate connecting box. DETAILED DESCRIPTION
[0023] As shown in the accompanying drawings: a prefabricated wall panel dry connection node 3 includes a wall body, the wall body includes a first wall 1 and a second wall 2 connected by a connecting piece, a plurality of connection nodes 3 are arranged between the first wall 1 and the second wall 2, each connection node 3 is provided with at least two connection units, the connection unit includes a connection box prefabricated in the inner side and / or outer side of the first wall 1, and a corresponding connection box prefabricated in the outer side and / or inner side of the second wall 2, and the connection boxes are fixedly connected by bolts.
[0024] Preferably, a first steel plate connection box 4 and a second steel plate connection box 8 are provided on the inner and outer sides of the first wall 1, and the first steel plate connection box 4 and the second steel plate connection box 8 are staggered inside and outside. A third steel plate connection box 6 and a fourth steel plate connection box 10 are prefabricated on the outer and inner sides of the second wall 2, and the third steel plate connection box 6 and the fourth steel plate connection box 10 are staggered inside and outside. The first steel plate connection box 4 and the third steel plate connection box 6 are fixedly connected by the first bolt 7 to form a first connection unit, and the second steel plate connection box 8 and the fourth steel plate connection box 10 are fixedly connected by the second bolt 9 to form a second connection unit.
[0025] The utility model is composed of two connection boxes and a connection screw to form a unit, which are arranged in combination of two units, one positive and one negative. Each connection seam is arranged in several groups of two units, and more than two units can also be arranged as a group to ensure the connection strength between the wall panels. The connection box of this technology is shallower than the PK box system and is easier to install. The connection rod of this technology passes through the connection seam obliquely, and the way of bearing horizontal force is stronger, which effectively improves the seismic and shear resistance of the connection node 3.
[0026] In the embodiment, the connection node 3 may also be provided with 3-5 connection units, and the connection units are staggered inside and outside. Preferably, the connection node 3 is provided with 3 or 4 connection units, which can ensure the connection strength of the connection node 3. Multiple connection units are convenient for dispersing the force of a single connection unit, reducing damage to the wall at the connection. More preferably, in this embodiment, the connection node 3 is provided with 2 connection units.
[0027] In the embodiment, the connection box is fixedly connected by welding of steel plates and is in the shape of a right triangle, which saves the space occupied by the connection box in the wall, and ensures the tensile capacity of the wall through the oblique connection of bolts. Preferably, the connection box is at an angle of 30-90° with the installation wall; preferably, the connection box is at an angle of 40-75° with the installation wall; more preferably, the connection box is at an angle of 45° or 50° with the installation wall. With this angle range, the connection strength between the connection box and the wall after installation can be guaranteed, and at the same time, the installation of the bolts is not hindered by the setting or installation of the connection box; optimally, in this embodiment, the connection box is at an angle of 45° with the installation wall to ensure the installation and fixation of the bolts; in addition, in order to reduce the damage to the wall during the installation of the bolts, a bolt sleeve 5 is provided on the connection box, and the sleeve 5 is pre-buried in the wall to prevent the bolts from damaging the wall during the installation process. The connection box is fixedly connected to the steel bars inside the wall by welding, thereby ensuring the connection strength between the connection box and the wall.
[0028] In another embodiment, a tongue and groove is provided at the connection between the first wall 1 and the second wall 2 to improve the sealing effect of the connection between the walls. Preferably, a corresponding groove is provided in the tongue and groove, and a sealing strip is provided in the groove to further improve the sealing effect between the walls, and at the same time, it can also play a buffering role to avoid strong collision during installation and damage to the wall. More preferably, at least two grooves are provided, and they are arranged in parallel in a wave shape to form multiple sealing lines to ensure the sealing effect of the connection, and can also reduce the extrusion of the wall caused by thermal expansion and contraction.
[0029] The utility model has a simple structure and ingenious design. Multiple connection nodes 3 are arranged between the wall panels. At least two connection units are arranged on each connection node 3. The connection units are arranged obliquely through connection boxes and bolts, which ensures the connection force area and force strength of the connection nodes 3, improves the convenience of installation operation of the connection units, and improves the seismic and shear resistance of the connection nodes 3.
[0030] The above are preferred embodiments of the present invention and the technical principles used therein. For those skilled in the art, without departing from the spirit and scope of the present invention, any obvious changes such as equivalent transformation, simple replacement, etc. based on the technical solution of the present invention are within the protection scope of the present invention.
Claims
1. A prefabricated wall panel dry connection node, comprising a wall body, the wall body comprising a first wall body and a second wall body connected by a connecting piece, a plurality of connection nodes are arranged between the first wall body and the second wall body, each connection node is provided with at least two connection units, characterized in that: The connection unit comprises a connection box prefabricated in the inner side and / or outer side of the first wall, and a corresponding connection box prefabricated in the outer side and / or inner side of the second wall, and the connection boxes are fixedly connected by bolts.
2. The prefabricated wall panel dry connection node according to claim 1, characterized in that: A first steel plate connection box and a second steel plate connection box are provided on the inner and outer sides of the first wall, and the first steel plate connection box and the second steel plate connection box are staggered inside and outside. A third steel plate connection box and a fourth steel plate connection box are prefabricated on the outer and inner sides of the second wall, and the third steel plate connection box and the fourth steel plate connection box are staggered inside and outside. The first steel plate connection box and the third steel plate connection box are fixedly connected by a first bolt to form a first connection unit, and the second steel plate connection box and the fourth steel plate connection box are fixedly connected by a second bolt to form a second connection unit.
3. The prefabricated wall panel dry connection node according to claim 1, characterized in that: The connection node is provided with 3-5 connection units, and the connection units are staggered inside and outside.
4. The prefabricated wall panel dry connection node according to claim 1, characterized in that: The connection box is fixedly connected by welding steel plates and is in the shape of a right-angle triangle.
5. The prefabricated wall panel dry connection node according to claim 4, characterized in that: The connected box forms an angle of 30-90° with the installation wall.
6. The prefabricated wall panel dry connection node according to claim 5, characterized in that: The connection box is fixedly connected to the steel bars inside the wall by welding.
7. The prefabricated wall panel dry connection node according to any one of claims 1 to 6, characterized in that: A tongue and groove is provided at the connection between the first wall and the second wall.
8. The prefabricated wall panel dry connection node according to claim 7, characterized in that: A corresponding groove is arranged in the tongue and groove, and a sealing strip is arranged in the groove.
9. The prefabricated wall panel dry connection node according to claim 8, characterized in that: At least two grooves are provided and are arranged in parallel in a wave shape.