Anti-collapse connecting joint based on self-resetting modular steel structure
By using cross-connecting plates made of shape memory alloy in modular buildings, the problem of insufficient anti-collapse performance of modular building nodes is solved, self-resetting function and high bearing capacity are achieved, and the anti-collapse performance of modular buildings is improved.
Patent Information
- Application Number
- CN202422876349.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-25
AI Technical Summary
The connection nodes of existing modular buildings have deficiencies in seismic resistance and anti-collapse performance, especially in vertical collapse, where there is little research on the performance of nodes. In addition, traditional connection nodes are difficult to restore to their original state after being loaded.
Self-resetting modular steel structure anti-collapse connection nodes are adopted, and cross connecting plates made of shape memory alloy are used to achieve self-resetting function through the connection between modular beams and modular columns, and vertical bending moment and shear force are transmitted through bolt connections.
It improves the anti-collapse performance of modular buildings, has a simple structure, uncomplicated construction, low cost, and can return to its original state after being loaded, thereby enhancing the bearing capacity and stiffness of the nodes.
Smart Images
Figure CN223398220U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of structural engineering, in particular to an anti-collapse connection node based on a self-resetting modular steel structure. Background Art
[0002] Modular construction, also known as cassette construction, primarily consists of modular columns, modular beams, concrete floor slabs, and ceilings. These components are prefabricated in a factory and then transported to the construction site for assembly. As an emerging building system, modular steel structures offer faster construction, lower investment, lower energy consumption, and less demanding construction environments compared to traditional industrial construction systems. Due to their environmentally friendly construction methods, modular construction is becoming a new trend in future architectural development.
[0003] Unlike traditional buildings, modular buildings need to be connected through nodes. Existing connection nodes are mainly aimed at their seismic performance, and there is little research on the performance of nodes during vertical collapse. During the collapse of a building, the nodes will generally be in a compression state, a shear state, and a mixed compression-shear state. Only more reliable connection nodes can make modular buildings less likely to collapse during disasters. Compared with previous research, this application proposes an anti-collapse connection node based on a self-resetting modular steel structure. It is not only simple to construct and has a simple structure between nodes, but also has a self-resetting function and can return to its original state after being loaded, greatly improving the anti-collapse performance of modular buildings. Utility Model Content
[0004] The purpose of the utility model is to provide an anti-collapse connection node based on a self-resetting modular steel structure, so as to solve the deficiencies of the above-mentioned prior art and improve the anti-collapse performance of modular buildings.
[0005] To achieve the above-mentioned objectives, the utility model provides an anti-collapse connection node based on a self-resetting modular steel structure, including a cross connecting plate arranged at the central connection points of four modular container units, and modular connection components are arranged in the four separation corners of the cross connecting plate, each group of the modular connection components includes a modular column group and a modular beam group, and the modular beam group and the modular column group are fixedly connected.
[0006] Preferably, the module column group includes a first module column and a second module column arranged below the first module column, and end plates are provided at both ends of the second module column and the first module column, and the two adjacent end plates are fixedly connected by welding.
[0007] Preferably, the modular beam group includes a first modular beam symmetrically arranged on both sides of the first modular column and a second modular beam symmetrically arranged on both sides of the second modular column, and the second modular beam and the first modular beam are fixedly connected at the adjacent flanges through a plurality of connecting members.
[0008] Preferably, the first module beam and the second module beam are fixedly connected to the cross connecting plate at the connected webs through a plurality of connecting members.
[0009] Preferably, the first module beam and the second module beam are both configured as a U-shaped structure.
[0010] Preferably, the cross connecting plate is made of shape memory alloy.
[0011] Therefore, the present invention adopts the above-mentioned anti-collapse connection node based on the self-resetting modular steel structure, which has the following beneficial effects:
[0012] (1) The cross connecting plate of this structure is made of a new material, shape memory alloy, which has self-resetting force. Adding a cross connecting plate between the module beam and the module column can effectively buffer and reduce the influence of external loads on the beam and column.
[0013] (2) This structure adds a cross connecting plate between the module beams and module columns, which has a simple structure, uncomplicated construction, low cost, and greater economic benefits.
[0014] (3) This structure can better transmit vertical bending moment and shear force through the connection of cross connecting plates, greatly improving the bearing capacity and stiffness of modular structural nodes, thereby improving the anti-collapse performance of modular buildings.
[0015] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a structural schematic diagram of an embodiment of an anti-collapse connection node based on a self-resetting modular steel structure of the present utility model;
[0017] Figure 2 This is a schematic diagram of an explosion structure of a self-resetting modular steel structure anti-collapse connection node in the utility model;
[0018] Figure 3 This is a structural schematic diagram of a cross connection plate based on a self-resetting modular steel structure anti-collapse connection node of the utility model;
[0019] Figure 4 This is a schematic diagram of an application of an anti-collapse connection node based on a self-resetting modular steel structure of the utility model;
[0020] Figure numerals: 1. cross connecting plate; 2. separation angle; 3. first module column; 4. second module column; 5. end plate; 6. first module beam; 7. second module beam; 8. connector; 9. flange; 10. web; 11. through hole. DETAILED DESCRIPTION
[0021] The technical solution of the present utility model is further described below through the accompanying drawings and embodiments.
[0022] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the usual meanings understood by persons of ordinary skill in the field to which this utility model belongs. The words "first", "second" and similar terms used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0023] Example
[0024] See also Figure 1-4 , the utility model provides a self-resetting modular steel structure anti-collapse connection node, such as Figure 4 As shown, A is a connection node, comprising a cross-connecting plate 1, located at the central connection point of the four modular container units. Made of a shape-memory alloy, this cross-connecting plate 1 features a self-resetting function. Modular connection assemblies are located within the four corners 2 of the cross-connecting plate 1. Each modular connection assembly comprises a modular column group and a modular beam group, which are fixedly connected to the modular column group.
[0025] The module column group includes a first module column 3 and a second module column 4 arranged below the first module column 3. End plates 5 are provided at both ends of the second module column 4 and the first module column 3. The two adjacent end plates 5 are fixedly connected by welding.
[0026] The modular beam assembly includes a first modular beam 6 symmetrically arranged on both sides of the first modular column 3 and a second modular beam 7 symmetrically arranged on both sides of the second modular column 4. The first modular beam 6 and the second modular beam 7 are both arranged in a U-shaped structure. The first modular beam 6 and the second modular beam 7 are respectively fixed to the column ends of the second modular column 4 of the first modular column 3 by welding, and are perpendicular to the second modular column 4 of the first modular column 3. The second modular beam 7 and the first modular beam 6 are fixedly connected at the connecting flanges 9 by a number of connecting members 8. The connecting members 8 are bolts. Two through holes 11 are provided on the lower flange 9 of the first modular beam 6 and the upper flange 9 of the second modular beam 7 for the bolts to pass through and fix.
[0027] The first module beam 6 and the second module beam 7 are fixedly connected to the cross connecting plate 1 by a plurality of connecting members 8 at the connected webs 10. The connecting members 8 are bolts. The webs 10 of each module beam are provided with six through holes 11 for the bolts to pass through and fix. The cross connecting plate 1 is also provided with through holes 11 for the bolts to pass through. Figure 3 As described above, each plate is provided with twelve through holes 11, which are distributed in a pattern of six on the top and six on the bottom, and two horizontally and three vertically.
[0028] When used, the specific construction steps of the connection nodes of this structure are as follows:
[0029] Step 1. After the second module columns 4 and the second module beams 7 of the four groups of modular connection components are installed by welding, the cross connecting plate 1 is installed between the four groups of beams and columns, and the second module beams 7 and the cross connecting plate 1 of each group of modular connection components are connected by bolts, and pre-tightening force is applied to make them tighter.
[0030] Step 2: Install the lower ceiling in place, and weld the column ends of the first module columns 3 and the column ends of the second module columns 4 of the four sets of modular connection components.
[0031] Step 3: After the first module columns 3 and the first module beams 6 of the four groups of modular connection components are installed by welding, bolts are passed through the through holes 11 on the webs of each group of first module beams 6 and the cross connecting plates 1 for connection.
[0032] Step 4: Connect the lower flange 9 of each corresponding first module beam 6 and the upper flange 9 of the second module beam 7 by bolts, and apply pre-tightening force to enhance the reliability and tightness of the connection.
[0033] Step 5: Finally, install the beams, columns and floor slabs of the upper modular units.
[0034] Therefore, the present invention adopts the above-mentioned anti-collapse connection node based on the self-resetting modular steel structure, which can better transmit vertical bending moment and shear force through the connection of the cross connecting plate, greatly improving the bearing capacity and stiffness of the modular structure node, thereby improving the anti-collapse performance of the modular building.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.
Claims
1. A self-resetting modular steel structure anti-collapse connection node, characterized by: It includes a cross connecting plate arranged at the central connection points of four modular container units, and modular connection components are arranged in the four separation corners of the cross connecting plate. Each group of modular connection components includes a modular column group and a modular beam group, and the modular beam group and the modular column group are fixedly connected.
2. The anti-collapse connection node based on a self-resetting modular steel structure according to claim 1, characterized in that: The module column group includes a first module column and a second module column arranged below the first module column. Both ends of the second module column and the first module column are provided with end plates, and the two upper and lower adjacent end plates are fixedly connected by welding.
3. The anti-collapse connection node based on a self-resetting modular steel structure according to claim 2, characterized in that: The modular beam group includes a first modular beam symmetrically arranged on both sides of the first modular column and a second modular beam symmetrically arranged on both sides of the second modular column. The second modular beam and the first modular beam are fixedly connected at the connected flanges through a plurality of connecting members.
4. The anti-collapse connection node based on a self-resetting modular steel structure according to claim 3, characterized in that: The first module beam, the second module beam and the cross connecting plate are all fixedly connected at the connected webs through a plurality of connecting members.
5. The anti-collapse connection node based on a self-resetting modular steel structure according to claim 4, characterized in that: The first module beam and the second module beam are both configured as a U-shaped structure.
6. The anti-collapse connection node based on a self-resetting modular steel structure according to claim 5, characterized in that: The cross connecting plate is made of shape memory alloy.