Low-damage tenacity curtain wall anti-seismic connecting device

Abstract

The present application relates to a kind of low damage tenacity curtain wall anti-seismic connecting device, including K type connector and support plate, K type connector is connected with support plate, K type connector is equipped with bottom plate, first support arm and second support arm, the head of first support arm and second support arm is equipped with through-hole, and first support arm and second support arm are connected with curtain wall by the through-hole of head, its characterized in that, floor is connected with support plate, the end surface of K type connector connecting curtain wall is perpendicular to support plate, the axis of the through-hole of the head of first support arm and second support arm is parallel to support plate, and the place of being connected with the bottom plate of K type connector is opened with horizontal groove on support plate, and horizontal groove is parallel to the end surface of K type connector connecting curtain wall.Compared with prior art, the present application has the advantages of stable support, strong anti-seismic performance and the like.

Description

Technical Field

[0001] This invention relates to a building connection device, and more particularly to a low-damage toughness curtain wall seismic connection device. Background Technology

[0002] In recent decades, frequent earthquakes and the high costs of post-earthquake repairs have further highlighted the high vulnerability of non-structural components. This is especially true when architectural elements such as curtain walls are involved, where the construction and repair costs of non-structural components can increase significantly. Therefore, inventing a connection structure for curtain walls that achieves low-damage toughness is particularly urgent. Based on recent earthquake damage experience, current curtain wall connection structures face the following practical problems:

[0003] (1) The existing traditional connection structure has insufficient seismic performance and is difficult to withstand the impact of strong earthquakes; damage to non-structural components can easily trigger a chain reaction, affecting the overall stability and safety of the building.

[0004] (2) Traditional connection methods are prone to damage under seismic forces, resulting in high maintenance costs; the complexity and time-consuming nature of repair work may further prolong the building's downtime and have a greater negative impact on socio-economic activities.

[0005] Invention CN115749072A discloses a point-supported glass curtain wall structure and its construction method, wherein the planes of the four connecting claws are parallel to the cross-sections of the connecting columns. The structure lacks adaptability to inter-story displacement and is prone to stress concentration due to vertical forces. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art, such as poor seismic performance and easy damage, and to provide a low-damage toughness curtain wall seismic connection device.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] This invention provides a low-damage toughness curtain wall seismic connection device, including a K-type connector and a support plate. The K-type connector is connected to the support plate. The K-type connector has a base plate, a first support arm, and a second support arm. The heads of the first and second support arms are provided with through holes. The first and second support arms are connected to the curtain wall through the through holes in their heads. The invention is characterized in that the base plate is connected to the support plate, the end face of the K-type connector connected to the curtain wall is perpendicular to the support plate, the axis of the through holes in the heads of the first and second support arms is parallel to the support plate, and a transverse groove is opened at the connection point between the support plate and the base plate of the K-type connector. The transverse groove is parallel to the end face of the K-type connector connected to the curtain wall.

[0009] Furthermore, it also includes a reinforcing plate, which is located between the two support plates and is fixedly connected to the support plates.

[0010] Furthermore, the heads of the first and second support arms are connected to the curtain wall using a point-supported glass curtain wall connection method.

[0011] Furthermore, the first and second support arms extend obliquely away from the support plate on the base plate.

[0012] Furthermore, it also includes bolt fasteners that pass through the transverse grooves of the support plate and the base plate of the K-type connector, connecting the K-type connector and the support plate together.

[0013] Furthermore, the ratio of the number of K-type connectors, bolt fasteners, and horizontal slots on the support plate is 1:2:2, and each bolt fastener corresponds to one horizontal slot on the support plate.

[0014] Furthermore, the vertical cross-sections of the first and second support arms are trapezoids that are narrow at the top and wide at the bottom.

[0015] Furthermore, the shape and size of the support plate are matched with the surface shape and size of the curtain wall to which it is connected.

[0016] Furthermore, a gap is provided between the two adjacent curtain wall panels connected by the K-type connector.

[0017] Furthermore, the support plate is made of Q355 stainless steel.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. This invention utilizes a K-type connector and support plate structure. The end face of the K-type connector connecting to the curtain wall is perpendicular to the support plate, and the through-hole axis of the support arm head is parallel to the support plate. Compared with traditional vertical connection methods, the horizontal connection method of the K-type connector in this invention is more conducive to adapting to inter-layer displacement and reducing stress concentration caused by vertical forces. Simultaneously, the support plate is designed with specific horizontal slots that allow the two K-type connectors to move independently, thereby adapting to the needs of the upper and lower panels during displacement changes.

[0020] 2. The K-type connector and the support plate structure of the present invention are connected by bolts. The bolt fasteners can fix the K-type connector and also withstand shear stress when the plate swings. Especially in extreme events such as earthquakes, they can effectively disperse and absorb stress and reduce structural damage.

[0021] 3. In this invention, the two support plates are connected together by a vertical reinforcing plate that acts as a stiffener. This stiffener design effectively reduces excessive deformation that may occur under the weight of the glass plate or other vertical loads. The use of the reinforcing plate enhances the rigidity and stability of the entire connection structure, while also improving its adaptability to various load conditions.

[0022] 4. The connection between the K-type connector of this invention and the curtain wall is a point-supported glass curtain wall structure, which allows for effective load transfer between the low-damage curtain wall and the main structure, providing the necessary support and stability.

[0023] 5. The present invention provides gaps between adjacent low-damage toughness curtain walls, which allow the curtain walls to have a certain deformation capacity under extreme conditions such as earthquakes, thereby improving their toughness and damage resistance. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the first structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the second structure of the present invention;

[0026] Figure 3 This is a front view of the structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the extended support arm of the present invention;

[0028] Figure 5 This is a partial schematic diagram of the invention and the main building;

[0029] Figure 6 This is a schematic diagram of the invention and the main building.

[0030] In the diagram, 1 is a K-type connector, 2 is a bolt fastener, 3 is a support plate, and 4 is a reinforcing plate. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0032] This invention provides a low-damage toughness curtain wall seismic connection device, comprising a K-type connector 1, bolt fasteners 2, a support plate 3, and a reinforcing plate 4. For example... Figures 1-3 As shown, the K-type connector 1 consists of two support arms and a base plate, with the support arms extending obliquely outward from the base plate. The K-type connector 1 and the support plate 3 are connected together by bolt fasteners 2 passing through the base plate and the support plate 3. Two reinforcing plates 4 are fixed between two parallel support plates 3, forming a curtain wall seismic connection device composed of two K-type connectors 1, two support plates 3, two reinforcing plates 4, and multiple bolt fasteners.

[0033] Among them, the bolt fasteners 2 have a load-bearing function. When the plate sways, they are subjected to shear stress, making them easy to withstand large stresses. Especially in extreme events such as earthquakes, they can significantly improve the stability and safety of the structure. The support plate 3 is designed with horizontal slots to allow the two connecting devices to move independently and adapt to the displacement changes of the upper and lower layers. The ratio of the number of horizontal slots on the K-type connector 1, bolt fasteners 2 and support plate 3 is 1:2:2, and each bolt fastener 2 corresponds to one horizontal slot on the support plate 3. The reinforcing plate 4 connects the support plates together as a reinforcing rib. The use of reinforcing ribs can effectively reduce the excessive deformation that may occur under the self-weight of the glass plate or other vertical loads, thereby enhancing the rigidity and stability of the entire connecting device and improving its adaptability to various load conditions.

[0034] The connection between the connecting device and the curtain wall is a point-supported glass curtain wall structure, which allows for effective load transfer between the low-damage curtain wall and the main structure, providing the necessary support and stability. K-type connector 1 provides a horizontal connection. Compared to traditional vertical connections, the horizontal connection of K-type connector 1 is more conducive to adapting to inter-story displacement while reducing stress concentration caused by vertical forces.

[0035] like Figure 4 As shown, the support arm of the K-type connector 1 extends obliquely outward on the base plate, and the degree of extension is determined by the layout of the connector on the curtain wall. The support arm can extend beyond the support plate 3 to ensure the connection effect, or the extension can be reduced to not exceed the range of the support plate 3 to reduce the space occupied by the connector and facilitate installation on the edge or corner of the curtain wall. In addition, when there is a need to save space occupied by the connector, the reinforcing plate 4 can be omitted, and the two K-type connectors can be connected to the same support plate 3.

[0036] Applications of low-damage toughness seismic connection devices in building curtain walls include: Figure 5 , Figure 6 As shown. The shape and size of the support plate 3 are matched with the surface shape and size of the curtain wall to which it is connected. The size of the support plate 3 depends on the actual application in the building. It can run horizontally through the entire building to accommodate different building scales and structural requirements.

[0037] In one embodiment of the invention, the slot in the support plate 3 is 80 mm long, and the bolt passing through it is an M12 type, achieving a low-friction clearance of approximately 33.5 mm in the left-right direction of the X-axis. Based solely on the sliding mechanism, this allows for an inter-floor displacement of 6-7 mm on a low-friction basis. Taking a floor height of 3 meters, the low-friction inter-floor displacement is already 2.23%. Although the distance between the arms of all connectors in the horizontal direction remains constant at 220 mm, the vertical dimension will be higher due to the use of two independent supports and reinforcing plates 4 instead of two K-type connectors being screwed onto a single plate simultaneously.

[0038] A set displacement of 0.025 meters was applied to the connection structure, and their stress distribution was compared. Displacements in opposite directions on the upper and lower arms corresponded to 1.7% inter-story displacement at a set floor height of 3 meters. Conventional connectors exhibited maximum stresses as high as 50 to 100 GPa, but the seismic-resistant connection device of this invention exhibited much lower stresses, with a maximum value of approximately 2 MPa, 4 to 5 orders of magnitude lower than conventional connectors. The maximum stress was located on the bolt fasteners 2, which adapted to the displacement by sliding in slots with slight friction. The arms also exhibited some slight stress, with the upper arm adapting to the displacement of the upper plate and the lower arm adapting to the displacement of the lower plate. A displacement of 0.025 meters was applied to each side, but the sliding joint had a capacity of 0.0335 meters; friction was determined solely by the low friction between the bolt fasteners 2, the connector, and the plate. When the maximum sliding capacity was reached, the stress increased exponentially, following the trend of conventional connectors.

[0039] As a preferred embodiment, the support plate 3 is made of Q355 stainless steel to ensure the corrosion resistance and strength of the connection structure.

[0040] In a preferred embodiment, a gap is provided between adjacent low-damage curtain walls to ensure that the low-damage curtain walls have a certain deformation capacity under earthquakes. The gap is 10-15 mm, preferably 13 mm.

[0041] As a preferred embodiment, the vertical cross-section of the support arm is designed as a trapezoid with a narrow head and a wide bottom to ensure the structural strength of the support arm.

[0042] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A low-damage toughness curtain wall seismic connection device, comprising a K-type connector (1) and a support plate (3), wherein the K-type connector (1) is connected to the support plate (3), the K-type connector (1) is provided with a base plate, a first support arm and a second support arm, the heads of the first support arm and the second support arm are provided with through holes, and the first support arm and the second support arm are connected to the curtain wall through the through holes of the heads, characterized in that, The base plate is connected to the support plate (3), the K-type connector (1) is horizontally connected to the curtain wall, the end face of the K-type connector (1) connected to the curtain wall is perpendicular to the support plate (3), the through hole axis of the first support arm and the second support arm head is parallel to the support plate (3), a horizontal groove is opened at the connection between the support plate (3) and the base plate of the K-type connector (1), and the horizontal groove is parallel to the end face of the K-type connector (1) connected to the curtain wall; It also includes a bolt fastener (2), which passes through the transverse groove of the support plate (3) and the bottom plate of the K-type connector (1) to connect the K-type connector (1) and the support plate (3) together; The number of the K-type connector (1) and the support plate (3) are both two, and the two support plates (3) are placed parallel to each other; It also includes a reinforcing plate (4), which is located between two support plates (3) and is fixedly connected to the support plates (3); The first support arm and the second support arm extend obliquely away from the support plate (3) on the base plate; The vertical cross-section of the first support arm and the second support arm is a trapezoid with a narrow head and a wide bottom.

2. The low-damage toughness curtain wall seismic connection device according to claim 1, characterized in that, The heads of the first and second support arms are connected to the curtain wall using a point-supported glass curtain wall connection method.

3. The low-damage toughness curtain wall seismic connection device according to claim 1, characterized in that, The ratio of the number of horizontal slots on the K-type connector (1), bolt fastener (2) and support plate (3) is 1:2:2, and each bolt fastener (2) corresponds to one horizontal slot on the support plate (3).

4. The low-damage toughness curtain wall seismic connection device according to claim 1, characterized in that, The shape and size of the support plate (3) are matched with the surface shape and size of the curtain wall to which it is connected.

5. The low-damage toughness curtain wall seismic connection device according to claim 1, characterized in that, The K-type connector (1) is connected to a gap between two adjacent curtain walls.

6. The low-damage toughness curtain wall seismic connection device according to claim 1, characterized in that, The material of the support plate (3) is Q355 stainless steel.

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