Anti-collapse corner connecting joint based on self-resetting modular steel structure
By adopting the self-resetting design of L-shaped connecting plates and shape memory alloy materials in modular steel structures, the problem of modular steel structure nodes being easily damaged under vertical loads is solved, and efficient anti-collapse performance and bearing capacity are achieved.
Patent Information
- Application Number
- CN202422876350.6
- 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 steel structures are easily damaged under vertical loads, and there is insufficient research on their anti-collapse performance, especially the nodes are easily damaged under external load impacts.
L-shaped connecting plates are used in combination with shape memory alloy materials, and the upper module columns, lower module columns, upper module beams and lower module beams are connected by fixings to form a self-resetting modular steel structure, which enhances the bearing capacity and anti-collapse performance of the nodes.
It can effectively buffer the impact of external loads, improve the node bearing capacity and anti-collapse performance of modular buildings, and has simple construction, low cost, and self-reset function.
Smart Images
Figure CN223398221U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of structural engineering, in particular to an anti-collapse corner connection node based on a self-resetting modular steel structure. Background Art
[0002] To build a resource-efficient and environmentally friendly society, my country is vigorously developing green buildings. Modular steel structures are an emerging building structure system that offers low emissions, low pollution, and low costs compared to traditional construction. Construction is simple, mechanized, and highly efficient. Each component of a modular steel container unit is manufactured and concrete poured in the factory, allowing for simultaneous production and on-site construction, significantly reducing construction time. Modular construction is gradually becoming a new development direction for my country's construction industry.
[0003] After modular units are assembled on-site, the upper and lower modules need to be connected. Currently, this is usually done by welding or by inserting a spacer between the modular units. Multiple bolts are then inserted through the spacer, applying a preload to achieve the connection. However, this method can easily damage the joints when the structure is subjected to significant external loads. Currently, most scholars, both domestically and internationally, focus on the seismic performance of connection nodes, with limited research examining their performance during vertical collapse.
[0004] Compared with previous studies, this application proposes an anti-collapse corner 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 initial state after being loaded, which greatly improves the anti-collapse performance of modular buildings. Utility Model Content
[0005] The purpose of this utility model is to provide a self-resetting modular steel structure anti-collapse corner connection node to solve the shortcomings of the above-mentioned existing technology, which can better buffer the impact of external loads and at the same time increase the bearing capacity and anti-collapse performance of the nodes between modular units.
[0006] To achieve the above-mentioned purpose, the utility model provides an anti-collapse corner connection node based on a self-resetting modular steel structure, including an L-shaped connecting plate, the inner corner of the L-shaped connecting plate is provided with a fixedly connected upper module column and a lower module column, and the inner two ends of the L-shaped connecting plate are symmetrically provided with a fixedly connected upper module beam and a lower module beam, and the lower module beam and the upper module beam are respectively fixedly arranged on both sides of the lower module column and the upper module column.
[0007] Preferably, the upper module column and the lower module column are both configured as shell-like structures, the interior of which is configured as a hollow structure, and end plates are provided at the openings at both ends.
[0008] Preferably, the upper module beam and the lower module beam each include a web, an upper flange and a lower flange, and the lower flange and the upper flange are fixedly arranged at both ends of the web.
[0009] Preferably, the lower flange of the upper module beam is fixedly connected to the upper flange of the lower module beam, and a through hole 1 is correspondingly provided on the connected upper flange and the lower flange, and the through hole 1 is fixed by a fixing piece.
[0010] Preferably, a plurality of through holes 2 are opened on the web, and a plurality of through holes 3 are opened on both side plates of the L-shaped connecting plate. The plurality of through holes 3 correspond to the plurality of through holes 2 one by one and are fixed by the fixing piece.
[0011] Preferably, the upper module column, the lower module column, the upper module beam and the lower module beam are all made of cold-bent steel pipes.
[0012] Therefore, the present invention adopts the above-mentioned anti-collapse corner connection node based on the self-resetting modular steel structure, which has the following beneficial effects:
[0013] (1) This structure uses a new material, shape memory alloy, which has self-resetting force. Adding an L-shaped connecting plate between the module beam and the module column can effectively buffer and reduce the impact of external loads on the beam and column.
[0014] (2) This structure adds an L-shaped connecting plate between the module beam and the module column, which has a simple structure, uncomplicated construction, low cost, and greater economic benefits.
[0015] (3) This structure can better transmit vertical bending moment and shear force through the connection of L-shaped connecting plates, greatly improving the bearing capacity and stiffness of the modular structure nodes, thereby improving the anti-collapse performance of the modular building.
[0016] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a structural schematic diagram of an embodiment of an anti-collapse corner connection node based on a self-resetting modular steel structure of the present invention;
[0018] Figure 2 This is a schematic diagram of an explosion structure of an anti-collapse corner connection node based on a self-resetting modular steel structure of the utility model;
[0019] Figure 3 This is a structural schematic diagram of an L-shaped connecting plate based on a self-resetting modular steel structure anti-collapse corner connection node of the utility model;
[0020] Figure 4This is a schematic diagram of an application of an anti-collapse corner connection node based on a self-resetting modular steel structure of the utility model;
[0021] Figure numerals: 1. L-shaped connecting plate; 2. upper module column; 3. lower module column; 4. upper module beam; 5. lower module beam; 6. end plate; 7. web; 8. upper flange; 9. lower flange; 10. through hole one; 11. fixing piece; 12. through hole two; 13. through hole three. DETAILED DESCRIPTION
[0022] The technical solution of the present utility model is further described below through the accompanying drawings and embodiments.
[0023] 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.
[0024] Example
[0025] See also Figure 1-4 , the utility model provides a self-resetting modular steel structure anti-collapse corner connection node, such as Figure 4 As shown, A is a corner connection node, comprising an L-shaped connecting plate 1 made of shape memory alloy. An upper module column 2 and a lower module column 3 are fixedly connected at the inner corners of the L-shaped connecting plate 1. Both upper and lower module columns 2 and 3 are shell-like structures with hollow interiors. End plates 6 are installed at each end opening. The upper and lower module columns 2 and 3 are fixedly connected by welding through the end plates 6.
[0026] The L-shaped connecting plate 1 is symmetrically provided with upper and lower module beams 4 and 5, which are fixedly connected. The lower and upper module beams 5 and 4 are respectively welded to the lower and upper module columns 3 and 2. The L-shaped connecting plate 1 is tightly fitted and fixed to the module columns and module beams.
[0027] The upper module beam 4 and the lower module beam 5 each include a web 7, an upper flange 8 and a lower flange 9. The lower flange 9 and the upper flange 8 are fixedly arranged at both ends of the web 7. The lower flange 9 of the upper module beam 4 is fixedly connected to the upper flange 8 of the lower module beam 5. Figure 2 As shown, two through holes 10 are correspondingly formed on the upper flange 8 and the lower flange 9, and the through holes 10 are fixed by fixing members 11. The fixing members 11 are fixing bolts.
[0028] like Figure 2 As shown, each web 7 is provided with six through holes 12. Figure 3 As shown, the L-shaped connecting plate 1 has 24 through-holes 13 on both sides, and 12 on each end, arranged in a pattern of six in the top and six in the bottom, and two horizontally and three vertically. Each through-hole 13 corresponds to each through-hole 12, and is secured by fasteners 11, which apply a preload to the connection. Fasteners 11 are fixing bolts, each consisting of a shank and a nut. There are 28 of these bolts in total.
[0029] The upper module column 2, the lower module column 3, the upper module beam 4 and the lower module beam 5 are all made of cold-formed steel pipes, which are hollow and have a certain thickness.
[0030] When used, the specific construction steps of the corner connection node of this structure are as follows:
[0031] Step 1: Install the lower module column 3 and the lower module beam 5 in place, align the end plate 6 of the upper module column 2 and the end plate 6 of the lower module column 3, and weld them to fix.
[0032] Step 2: After the lower module beam 5 is installed, align the upper module beam 4 and the lower module beam 5 according to the opening position of the through hole 10, and pass the fixing bolts through the through hole 10 on the flanges of the two to connect them. Pre-tightening force can be applied to enhance the reliability of the connection.
[0033] Step 3: After installing the upper module beam 4 and the lower module beam 5, align the two sets of installed module beams perpendicular to the column end connection of the upper module column 2 and the lower module column 3, align the beam end and the column end and weld them together.
[0034] Step 4: Finally, place the L-shaped connecting plate 1 against the column corner and connect the webs 7 of the upper and lower module beams 4 and 5 to the L-shaped connecting plate 1 with fixing bolts. Install the floor and ceiling of the modular unit, followed by the other modules.
[0035] Therefore, the present invention adopts the above-mentioned anti-collapse corner connection node based on the self-resetting modular steel structure, which can better transmit vertical bending moment and shear force through the connection of L-shaped connecting plates, greatly improving the bearing capacity and stiffness of the modular structure node, thereby improving the anti-collapse performance of the modular building.
[0036] 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 corner connection node, characterized by: It includes an L-shaped connecting plate, the inner corners of which are provided with a fixedly connected upper module column and a lower module column, and the inner ends of the L-shaped connecting plate are symmetrically provided with a fixedly connected upper module beam and a lower module beam, and the lower module beam and the upper module beam are respectively fixedly provided on both sides of the lower module column and the upper module column.
2. The anti-collapse corner connection node based on a self-resetting modular steel structure according to claim 1, characterized in that: The upper module column and the lower module column are both configured as shell-like structures, the interior of which is configured as a hollow structure, and end plates are provided at both end openings.
3. The anti-collapse corner connection node based on a self-resetting modular steel structure according to claim 2, characterized in that: The upper module beam and the lower module beam each include a web, an upper flange and a lower flange, and the lower flange and the upper flange are fixedly arranged at two ends of the web.
4. The anti-collapse corner connection node based on a self-resetting modular steel structure according to claim 3, characterized in that: The lower flange of the upper module beam is fixedly connected to the upper flange of the lower module beam, and a through hole 1 is correspondingly opened on the connected upper flange and the lower flange, and the through hole 1 is fixed by a fixing piece passing through it.
5. The anti-collapse corner connection node based on a self-resetting modular steel structure according to claim 4, characterized in that: The web is provided with a plurality of through holes 2, and the two side plates of the L-shaped connecting plate are provided with a plurality of through holes 3. The plurality of through holes 3 correspond to the plurality of through holes 2 in a one-to-one manner and are fixed by the fixing piece.
6. The anti-collapse corner connection node based on a self-resetting modular steel structure according to claim 5, characterized in that: The upper module column, the lower module column, the upper module beam and the lower module beam are all made of cold-bent steel pipes.