Modular steel structure mortise and tenon joint structure

Abstract

The application discloses a kind of modular steel structure mortise and tenon type connecting node structures, comprising: upper layer connecting unit, including at least one upper module column;Lower layer connecting unit, including at least one lower module column, each lower module column is correspondingly arranged below each upper module column;At least one mortise insert, is set in the bottom of each upper module column;At least one mortise fastener, is set at the top of each lower module column, the inner side of mortise fastener is adapted to with mortise insert adaptive fitting, the outer side of mortise fastener is adapted to with the inner side wall of upper module column adaptive fitting;Connector, is set on mortise fastener, is adapted to connect multiple mortise fasteners.It solves the technical problems that the existing connecting node adopts multiple bolt fixing, which leads to excessive number of steel opening, increases the processing opening cost, construction workers need to tighten enough number of bolts, consumes excessive bolt material and increases labor cost and time, is easy to cause stress concentration and sudden instability, leading to structural damage.

Description

Technical Field

[0001] This invention relates to the field of steel structure building technology, specifically to a modular steel structure mortise and tenon joint connection node structure. Background Technology

[0002] Traditional inter-module connections primarily involve straight-plate connections, bolted connections, and welding. Construction at module nodes requires considerable operational space for welding or connection. Inter-module connections include horizontal connections between adjacent modules and vertical connections between vertically connected modules. Bolted connections are commonly used for inter-module joints. However, bolted connections present complex stresses in the vertical and horizontal directions of traditional modules, within the module structure, and between the module and the foundation. This leads to increased differences in the stress response of different connection nodes. Connection node design often prioritizes safety, requiring a certain safety margin. Consequently, the modular steel components become excessively large, increasing construction difficulty. Furthermore, the excessive number of bolts at traditional inter-module joints indicates a large number of openings. Research shows that an excessive number of openings can lead to stress dispersion and concentration at nodes. An excessive number of bolts also prolongs construction time, hindering convenient and efficient construction operations.

[0003] Therefore, the traditional method of using multiple bolts to fix the connection nodes between modules results in an excessive number of holes in the steel, increasing the cost of processing and drilling. Construction workers need to tighten a sufficient number of bolts, which consumes too much bolt material and increases labor costs and time. This can easily cause stress concentration and sudden instability, leading to structural damage. Summary of the Invention

[0004] This invention provides a modular steel structure mortise and tenon joint structure, which solves the technical problems of existing joints that use multiple bolts for fixing, resulting in too many holes in the steel, increasing the cost of processing and drilling, requiring construction workers to tighten a sufficient number of bolts, consuming too much bolt material and increasing labor costs and time, and easily causing stress concentration and sudden instability, leading to structural damage.

[0005] In view of this, the present invention provides a modular steel structure mortise and tenon joint node structure, comprising:

[0006] The upper-level connection unit includes at least one upper module column;

[0007] The lower-level connection unit includes at least one lower module post, and each lower module post is correspondingly disposed below each upper module post;

[0008] At least one tenon insert is provided at the bottom of each of the upper module columns;

[0009] At least one tenon piece fastener is arranged at the top of each of the lower module columns, the inner side of the tenon piece fastener is adapted to be fitted and embedded with the tenon piece insert, and the outer side of the tenon piece fastener is adapted to be fitted and embedded with the inner side wall of the upper module column;

[0010] A connecting piece is sleeved on the tenon piece fastener and is adapted to connect a plurality of tenon piece fasteners.

[0011] Optionally, the tenon piece insert comprises a fixing plate fixedly connected with the inner side wall of the upper module column, and at least one tenon is arranged side by side at the bottom of the fixing plate.

[0012] The inner side of the tenon piece fastener is provided with at least one tenon groove corresponding to the tenon.

[0013] Optionally, the number of tenons is two, the top of the tenon piece fastener is concavely provided with a cavity, the cavity is divided into two tenon grooves and two recesses by a I-shaped partition, and the two recesses are respectively located on the two sides of the I-shaped partition.

[0014] And / or, the cross section of the tenon is in the shape of a concave.

[0015] Optionally, a connecting bolt is further arranged, and the tenon piece insert and the tenon piece fastener are fixedly connected through the connecting bolt.

[0016] Optionally, a first connecting hole is horizontally arranged through the tenon in a side-by-side direction.

[0017] The tenon piece fastener is provided with a second connecting hole corresponding to the first connecting hole.

[0018] A third connecting hole is arranged on one side of the upper module column corresponding to the first connecting hole.

[0019] The connecting bolt passes through the third connecting hole, the second connecting hole and the first connecting hole respectively, and the connecting bolt is threadedly connected with the second connecting hole.

[0020] Optionally, two first cross beams are arranged on the circumferential side of the upper module column, and the upper module column and the two first cross beams are perpendicular to each other.

[0021] Optionally, the first cross beam is hollow, one of the first cross beams is arranged at the position of the third connecting hole, and a waist hole is arranged on the inner side of the first cross beam.

[0022] Optionally, two second cross beams are arranged on the circumferential side of the lower module column corresponding to the two first cross beams, and the upper module column and the two second cross beams are perpendicular to each other.

[0023] Optionally, the number of the upper module column and the lower module column is one; the connecting piece is a mouth-shaped and is sleeved on the periphery of the tenon fastener.

[0024] Optionally, the number of the upper module column and the lower module column is two; the connecting piece is a sun-shaped and is sleeved on the periphery of two tenon fasteners, and is suitable for connecting two lower module columns.

[0025] Or, the number of the upper module column and the lower module column is four; the connecting piece is a field-shaped and is sleeved on the periphery of four tenon fasteners, and is suitable for connecting four lower module columns.

[0026] The technical scheme of the present application has the following advantages:

[0027] In the present application, by setting the tenon plug-in in the bottom of the upper module column of the upper connecting unit, and setting the tenon fastener on the top of the lower connecting unit, when installing the module units of the steel structure building, first, the connecting piece is sleeved on the tenon fastener to increase the rigidity and stability of the connecting node, when the number of the tenon fastener is multiple, the multiple tenon fasteners are connected by the connecting piece to form the lower connecting unit, then the upper connecting unit and the lower connecting unit are quickly connected at the connecting node by the cooperation of the tenon plug-in and the tenon fastener, the installation is completed, and the connection between the module units of the steel structure building is completed, which is convenient and fast, without a large number of openings for bolt connection, optimizing the process, reducing the steel structure prefabrication processing cost, reducing the construction time, improving the construction efficiency, avoiding stress concentration and local mutation instability, and when installing, the inner sides of the tenon plug-in and the tenon fastener are mutually embedded, and the outer side of the tenon fastener is embedded with the inner side wall of the upper module column, double embedding, improving the stability and rigidity of the connecting node. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0029] Figure 1 The structure diagram of the two-column four-beam corner joint provided by the present application is shown in the following figure:

[0030] Figure 2 The structure diagram of the two-column four-beam corner joint provided by the present application is shown in the following figure: Figure 1 The A-A cross-sectional view in the present application is shown in the following figure:

[0031] Figure 3 The explosion diagram of the two-column four-beam corner joint provided by the present application is shown in the following figure:

[0032] Figure 4 Structure diagram of the tenon plug provided by the present application;

[0033] Figure 5 Structure diagram of the tenon fastener provided by the present application;

[0034] Figure 6 Structure diagram of the square-shaped connecting piece provided by the present application;

[0035] Figure 7 Structure diagram of the edge node of the four-column eight-beam provided by the present application

[0036] Figure 8 Structure diagram of the sun-shaped connecting piece provided by the present application;

[0037] Figure 9 Structure diagram of the middle node of the eight-column sixteen-beam provided by the present application;

[0038] Figure 10 Structure diagram of the square-shaped connecting piece provided by the present application.

[0039] Explanation of reference signs:

[0040] 1, upper module column; 2, lower module column; 3, tenon plug; 301, fixed plate; 302, tenon head; 303, first connecting hole; 4, tenon fastener; 401, tenon groove; 402, groove; 403, I-shaped separator; 404, second connecting hole; 5, connecting piece; 6, connecting bolt; 7, third connecting hole; 8, first cross beam; 9, waist hole; 10, second cross beam. DETAILED DESCRIPTION

[0041] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms “first”, “second”, “third” are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as there is no conflict between them.

[0045] Embodiment 1

[0046] Please refer to Figures 1 to 10 The embodiment provides a modular steel structure mortise and tenon joint structure, which comprises: an upper connecting unit comprising at least one upper module column 1; a lower connecting unit comprising at least one lower module column 2, each lower module column 2 being arranged below each upper module column 1; at least one tenon plug-in 3 arranged at the bottom of each upper module column 1; at least one tenon fastener 4 arranged at the top of each lower module column 2, the inner side of the tenon fastener 4 being adapted to fit and embed with the tenon plug-in 3, and the outer side of the tenon fastener 4 being adapted to fit and embed with the inner side wall of the upper module column 1; and a connecting piece 5 sleeved on the tenon fastener 4 and adapted to connect a plurality of tenon fasteners 4.

[0047] It should be noted that the upper connecting unit and the lower connecting unit are adapted to connect the module units of the steel structure building, and the upper module column 1 is hollowly arranged.

[0048] In the embodiment, the tenon plug-in 3 is arranged at the bottom of the upper module column 1 of the upper connecting unit, and the tenon fastener 4 is arranged at the top of the lower connecting unit. When the module units of the steel structure building are installed, the connecting piece 5 is first sleeved on the tenon fastener 4 to increase the rigidity and stability of the connecting joint. When the number of tenon fasteners 4 is multiple, the multiple tenon fasteners 4 can be connected by the connecting piece 5 to form the lower connecting unit. Then, the upper connecting unit and the lower connecting unit can be quickly connected at the connecting joint by the cooperation and embedding of the tenon plug-in 3 and the tenon fastener 4, and the installation is completed, thereby completing the connection between the module units of the steel structure building, which is convenient and fast, does not need a large number of holes for bolt connection, optimizes the process, reduces the prefabrication cost of the steel structure, reduces the construction time, improves the construction efficiency, avoids stress concentration and local instability, and embeds the inner sides of the tenon plug-in 3 and the tenon fastener 4 with each other while embedding the outer side of the tenon fastener 4 with the inner side wall of the upper module column 1, thereby improving the stability and rigidity of the connecting joint.

[0049] Embodiment 2

[0050] As a further improvement of Embodiment 1, as shown in Figures 2 to 4 the tenon plug 3 comprises a fixed plate 301 fixedly connected with the inner side wall of the upper module column 1, and the bottom of the fixed plate 301 is provided with at least one tenon 302 side by side; the inner side of the tenon fastener 4 is provided with at least one mortise 401 corresponding to the tenon 302.

[0051] It should be noted that the upper module column 1 is hollowly arranged.

[0052] In this embodiment, the entire tenon plug 3 is arranged in the upper module column 1 by fixing the fixed plate 301 to the inner side wall of the upper module column 1, and the tenon 302 on the fixed plate 301 faces downward, which facilitates the cooperation and embedding of the tenon fastener 4. When connecting the upper module column 1 and the lower module column 2, the tenon fastener 4 is inserted into the bottom of the upper module column 1, and the tenon 302 in the upper module column 1 is embedded into the mortise 401 on the tenon fastener 4, thereby being embedded and connected with each other.

[0053] Specifically, the fixed plate 301 is welded to the inner side wall of the upper module column 1 to improve stability.

[0054] Based on the above-mentioned embodiments, in a preferred embodiment, as shown in Figures 2 to 5 the number of tenons 302 is two, and the top of the tenon fastener 4 is concavely provided with a cavity, which is divided into two mortises 401 and two grooves 402 by a H-shaped separator 403, and the two grooves 402 are respectively located on the two sides of the H-shaped separator 403.

[0055] In this embodiment, the cavity is divided into two mortises 401 and two grooves 402 by the H-shaped separator 403, wherein the two grooves 402 are respectively located on the two sides of the H-shaped separator 403. When the tenon fastener 4 and the tenon plug 3 are connected, the two tenons 302 of the tenon plug 3 are respectively embedded into the two mortises 401, and the H-shaped separator 403 is used for separation, so that the mortises 401 have the grooves 402 on both sides, which can provide deformation space while ensuring rigidity. When the connection node receives a transverse shear force or excessive force, it can deform to the space on both sides of the groove 402 to absorb energy, thereby providing a physical space for energy dissipation deformation at the connection node. The space of the groove 402 part can be used as a safety reserve for energy dissipation, thereby improving the safety performance of the overall structure.

[0056] Specifically, the bottom of the tenon fastener 4 is embedded in the lower module column 2 by a preset distance, as shown in Figure 2 and is welded to the lower module column 2 to improve rigidity and stability.

[0057] On the basis of the above-mentioned embodiments, in a preferred embodiment, as shown in Figures 2 to 4 the cross section of the tenon 302 is in the shape of a concave character.

[0058] In this embodiment, the cross section of the tenon 302 is in the shape of a concave character, that is, the tenon 302 is hollow, which can provide deformation space while ensuring rigidity, can deform to absorb energy and reduce vibration when the force is too large, and can improve the overall safety performance.

[0059] On the basis of the above-mentioned embodiments, in a preferred embodiment, as shown in Figure 1 it also includes a connecting bolt 6, and the tenon plug-in part 3 and the tenon fastener 4 are fixedly connected through the connecting bolt 6.

[0060] In this embodiment, after the tenon plug-in part 3 and the tenon fastener 4 are embedded, they are fixed through the connecting bolt 6, which improves stability and avoids shaking after embedding and connecting. In addition, the structure and connection method are simple, which can improve installation efficiency and simplify time cost of construction.

[0061] On the basis of the above-mentioned embodiments, in a preferred embodiment, as shown in Figures 2 to 4 a plurality of tenons 302 are provided with first connecting holes 303 in a horizontal through manner in a side-by-side direction; the tenon fastener 4 is provided with a second connecting hole 404 corresponding to the first connecting hole 303; one side of the upper module column 1 is provided with a third connecting hole 7 corresponding to the first connecting hole 303; the connecting bolt 6 passes through the third connecting hole 7, the second connecting hole 404 and the first connecting hole 303 respectively, and the connecting bolt 6 is threadedly connected with the second connecting hole 404.

[0062] In this embodiment, after the tenon 302 of the tenon plug-in part 3 is embedded in the tenon groove 401 of the tenon fastener 4, the first connecting hole 303, the second connecting hole 404 and the third connecting hole 7 are coaxially aligned. At this time, the connecting bolt 6 is inserted from the third connecting hole 7, passes through the second connecting hole 404 and the first connecting hole 303 respectively, and is finally threadedly connected with the second connecting hole 404. Thus, the tenon plug-in part 3 and the tenon fastener 4 are fixed, that is, the upper module column 1 and the lower module column 2 are fixed, which increases the rigidity at the connection node and improves stability, and without the cooperation of nuts and connecting bolts 6, the structure is simple and the construction time is reduced.

[0063] Specifically, as shown in Figure 2 and Figure 5 the inner side of the second connecting hole 404 is provided with a first threaded structure, and the connecting bolt 6 is provided with a second threaded structure matched with the first threaded structure, so as to facilitate threaded connection. Preferably, the first threaded structure is arranged at one end of the second connecting hole 404 away from the third connecting hole 7, so as to facilitate threaded connection at the end when the connecting bolt 6 is inserted into the second connecting hole 404, facilitate installation, save installation time and improve efficiency.

[0064] On the basis of the above embodiment, in a preferred embodiment, two first cross beams 8 are arranged on the circumferential side of the upper module column 1, and the upper module column 1 and the two first cross beams 8 are perpendicular to each other.

[0065] It should be noted that each module unit of the steel structure building generally has a cuboid overall appearance.

[0066] In this embodiment, the two first cross beams 8 can be connected with the transverse support beams to support the module units above the connection joints of the steel structure building, and the structure in which the upper module column 1 and the two first cross beams 8 are perpendicular to each other facilitates the assembly and combination.

[0067] On the basis of the above embodiment, in a preferred embodiment, as shown in Figures 1 to 3 , Figure 7 and Figure 9 , the first cross beam 8 is hollow; one of the first cross beams 8 is arranged at the position of the third connecting hole 7, and the inner side of the first cross beam 8 is provided with a waist hole 9.

[0068] It should be noted that the structure of each module unit of the steel structure module building is generally a cuboid structure, and the bottom has a transverse short axis and a transverse long axis for support. The plate load of the module unit is a two-way plate force, and the transverse long axis is subjected to greater stress and greater vertical deformation during the two-way plate force process. In the cuboid member, the lateral stiffness of the transverse long axis is often smaller than that of the transverse short axis, and the flexibility is large. Therefore, during the three-way force process of the module unit, the transverse long axis is more likely to be damaged than the transverse short axis. Therefore, the first cross beam 8 provided with the waist hole 9 is arranged as the transverse short axis of the cuboid for support, and the other first cross beam 8 is arranged as the transverse long axis for support.

[0069] In the embodiment, the first cross beam 8 is connected at the third connecting hole 7, and a waist hole 9 is formed on the inner side of the first cross beam 8, that is, the side close to the other first cross beam 8. On the one hand, the waist hole 9 provides an operation space to facilitate the fixing of the tenon fastener 4 and the tenon plug 3 by the connecting bolt 6. On the other hand, the waist hole 9 weakens the support stiffness of one of the first cross beams 8, so that it serves as a horizontal short axis of the module unit to support, and when subjected to three-way stress, the load capacity and the ability to resist damage of the first cross beam 8 without the waist hole 9 can be balanced, so as to meet the "strong column and weak beam" criterion in the structural system, and ensure that the beam is damaged before the column under external force and accidental action. In addition, the first cross beam 8 with the waist hole 9 is beneficial to share the internal energy accumulation in the structure, so as to achieve the energy dissipation and shock absorption effect of the buckling-restrained brace, and the energy is absorbed through the waist hole 9 to ensure that the structure is not locally unstable due to large energy accumulation, and the first cross beam 8 without the waist hole 9 is not easy to cause structural instability due to excessive deformation during internal energy accumulation.

[0070] On the basis of the above-mentioned embodiments, in a preferred embodiment, as shown in Figure 1 , the lower module column 2 is provided with two second cross beams 10 corresponding to the two first cross beams 8, and the upper module column 1 and the two second cross beams 10 are perpendicular to each other.

[0071] In the embodiment, the two second cross beams 10 can be connected with the horizontal support beam to support the module unit below the connection joint of the steel structure building, and the structure in which the upper module column 1 and the two first cross beams 8 are perpendicular to each other facilitates the assembly and combination.

[0072] On the basis of the above-mentioned embodiments, in a preferred embodiment, as shown in Figures 1 to 3 and Figure 6 , the number of the upper module column 1 and the lower module column 2 is one; and the connecting piece 5 is in the shape of a mouth and is sleeved on the periphery of the tenon fastener 4.

[0073] It should be noted that the connection joint between the module units of the steel structure building can be generally divided into corner joints, edge joints and middle joints according to the position.

[0074] In the embodiment, when the number of the upper module column 1 and the lower module column 2 is one, the connection joint is a corner joint with two columns and four beams, which can be applied to the connection at the corner joint, and the connection joint extends in four directions as support, and the connecting piece 5 is in the shape of a mouth (that is, the connecting piece 5 is provided with an opening), which is sleeved on the tenon fastener 4 to enhance the lateral stiffness and limit the position, so that the first connecting hole 303, the second connecting hole 404 and the third connecting hole 7 can remain in a straight line after the tenon fastener 4 and the tenon plug 3 are embedded, and the connecting bolt 6 is inserted and fixed.

[0075] As a convertible embodiment, the number of upper module columns 1 and lower module columns 2 can be two, as shown in Figure 7 and Figure 8 The connecting piece 5 is in the shape of a sun and is sleeved on the circumferential side of the two tenon fasteners 4, and is suitable for connecting the two lower module columns 2. It should be noted that the connecting joints between the module units of the steel structure building can be generally divided into corner joints, edge joints and middle joints according to the position. When the number of upper module columns 1 and lower module columns 2 is two, the two lower module units are connected in the horizontal direction to form an edge joint with four columns and eight beams by the connecting piece 5 in the shape of a sun (i.e. the connecting piece 5 is provided with two openings corresponding to the two tenon fasteners 4), which can be applied to the connection at the edge joint, ensuring the stability of the overall structure in the horizontal direction during installation and simplifying the structure connection mode. At the same time, the structure is overall beautiful, the connecting joint is stable, and the cost is also reduced accordingly; after the connection is completed, the connecting joint extends in five directions as a support, enhances the lateral stiffness, and can be limited at the same time, so that the first connecting hole 303, the second connecting hole 404 and the third connecting hole 7 can remain in a straight line after the tenon fastener 4 and the tenon plug 3 are fitted, facilitating the insertion of the connecting bolt 6 for fixation. Specifically, one side of the two upper module columns provided with the first horizontal beam with a waist hole is close to each other, facilitating the use of the two first horizontal beams with a waist hole as a transverse short axis, meeting the design requirements.

[0076] As a convertible embodiment, the number of upper module columns 1 and lower module columns 2 can be two, as shown in Figure 9 and Figure 10As shown, there are four upper module columns 1 and four lower module columns 2; the connectors 5 are in a grid shape and are fitted around the four tenon fasteners 4, suitable for connecting the four lower module columns 2. It should be noted that the connection nodes between modular units in steel structure buildings can usually be divided into corner nodes, edge nodes, and center nodes according to their location. When there are four upper module columns 1 and four lower module columns 2, the four lower module units are connected horizontally by a grid-shaped connector 5 (i.e., connector 5 has four openings) fitted onto the four tenon fasteners 4 to form a central node of eight columns and sixteen beams. This can be used for connection at the central node, ensuring the horizontal stability of the overall structure during installation and simplifying the structural connection method. At the same time, the overall structure is aesthetically pleasing, the connection node has strong stability, and the cost is reduced accordingly. After the connection is completed, the connection node extends in six directions as a support to enhance lateral stiffness and can also be limited, so that after the tenon fasteners 4 and tenon inserts 3 are fitted, the first connection hole 303, the second connection hole 404, and the third connection hole 7 can be kept in a straight line, which is convenient for inserting the connecting bolts 6 for fixing. Specifically, the four upper module columns are arranged symmetrically in two groups of two. The first crossbeams with waist holes on the two upper module columns are close to each other on one side, and the first crossbeams with waist holes on the other two upper module columns are also close to each other on one side. This makes it convenient for the two first crossbeams with waist holes to be used together as a transverse short axis, which meets the design requirements.

[0077] It should be noted that the common number of upper module column 1 and lower module column 2 is one, two or four, but in actual construction, L-shaped connectors 5 (i.e. connectors 5 have three openings) can be used to connect three tenon fasteners 4 to form a connection node of six columns and twelve beams. There is no specific limit here. The specific number can be determined according to the actual installation requirements, and the number of openings of connectors 5 can be adjusted accordingly. It will not be elaborated on here.

[0078] The specific assembly mode of the mortise and tenon type connection node structure of the modular steel structure provided by the embodiment is as follows: according to the position of the connection node, the connection node is determined to be a corner node, an edge node or a middle node, and the upper module column 1 and the lower module column 2, each of which has a quantity of one, are connected to form a two-column four-beam corner node by using a square-shaped connector 5, or the upper module column 1 and the lower module column 2, each of which has a quantity of two, are connected to form a four-column eight-beam corner node by using a sun-shaped connector 5, or the upper module column 1 and the lower module column 2, each of which has a quantity of two, are connected to form an eight-column sixteen-beam corner node by using a field-shaped connector 5, which can be determined according to actual needs and adaptively adjusted in the number of openings of the connector 5. When connecting the upper module unit and the lower module unit, first, the plurality of mortise fasteners 4 are connected by sleeving the connector 5 on the mortise fastener 4, then the bottom of the upper module column 1 is aligned with the mortise fastener 4, and the mortise plug 3 is embedded with the mortise fastener 4, wherein the mortise of the mortise plug 3 is embedded with the mortise groove 401 of the mortise fastener 4, and the outer side of the mortise fastener 4 is embedded with the inner side wall of the upper module column 1, and the double embedding improves the connection stiffness and stability. At this time, the first connecting hole 303, the second connecting hole 404 and the third connecting hole 7 are located on the same straight line, the connecting bolt 6 is inserted into the first connecting hole 303, the second connecting hole 404 and the third connecting hole 7 and is screwed with the second connecting hole 404, the upper layer connection unit and the lower layer connection unit can be quickly connected at the connection node, the installation is completed, and the connection between the module units of the steel structure building is completed, which is convenient and fast, does not need a large number of openings for bolt connection, optimizes the process, reduces the prefabrication cost of the steel structure, reduces the construction time, improves the construction efficiency, avoids stress concentration and local instability, and provides a deformation space when the connection node is subjected to excessive force, which can be deformed to absorb energy and dissipate shock, improve the overall safety performance, in addition, the setting of the waist hole 9 facilitates the installation of the connecting bolt 6, and also facilitates the "strong column and weak beam" criterion in the foot structure system, ensures that the beam is damaged before the column under external force and accidental action, shares the internal energy accumulation in the structure, achieves the energy dissipation effect of the buckling-restrained brace, and further improves the safety performance of the overall structure. The technical problem that the existing connection node adopts multiple bolt fixation to cause too many openings of steel, increase the processing opening cost, construction workers need to tighten a sufficient number of bolts, consume too much bolt material and increase the labor cost and time, easily cause stress concentration and sudden instability, and cause structure damage is solved.

[0079] Obviously, the above embodiments are only examples for clearly illustrating, but not limit the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A modular steel structure mortise and tenon connection joint structure, characterized by, The utility model relates to a modular connection unit, comprising: an upper connection unit comprising at least one upper module column (1); a lower connection unit comprising at least one lower module column (2), each of which is arranged below each of the upper module columns (1); at least one tenon plug (3) arranged at the bottom of each of the upper module columns (1); at least one tenon fastener (4) arranged at the top of each of the lower module columns (2), the inner side of the tenon fastener (4) being adapted to fit into the tenon plug (3), and the outer side of the tenon fastener (4) being adapted to fit into the inner side wall of the upper module column (1); a connecting piece (5) sleeved on the tenon fastener (4) and adapted to connect a plurality of tenon fasteners (4); the tenon plug (3) comprises a fixed plate (301) welded to the inner side wall of the upper module column (1), and the bottom of the fixed plate (301) is provided with at least one tenon (302) arranged side by side; the inner side of the tenon fastener (4) is provided with at least one tenon groove (401) corresponding to the tenon (302); the number of tenons (302) is two, the top of the tenon fastener (4) is concavely provided with a cavity, the cavity is separated into two tenon grooves (401) and two grooves (402) by a I-shaped separator (403), and the two grooves (402) are respectively located on the two sides of the I-shaped separator (403).

2. The modular steel structure mortise and tenon joint structure according to claim 1, characterized in that, The cross section of the tenon (302) is in the shape of a concave character.

3. The modular steel structure mortise and tenon joint structure according to claim 1 or 2, characterized in that, It further comprises connecting bolts (6) for fixedly connecting the tenon plug (3) and the tenon fastener (4).

4. The modular steel structure mortise and tenon connection node structure according to claim 3, characterized in that, A plurality of tenons (302) are each provided with a first connecting hole (303) arranged horizontally in the side-by-side direction; the tenon fastener (4) is provided with a second connecting hole (404) corresponding to the first connecting hole (303); one side of the upper module column (1) is provided with a third connecting hole (7) corresponding to the first connecting hole (303); the connecting bolts (6) pass through the third connecting hole (7), the second connecting hole (404) and the first connecting hole (303) respectively, and the connecting bolts (6) are threadedly connected with the second connecting hole (404).

5. The modular steel structure mortise and tenon connection node structure according to claim 4, characterized in that, The upper module column (1) is provided with two first cross beams (8) on the circumferential side, and the upper module column (1) and the two first cross beams (8) are perpendicular to each other in pairs.

6. The modular steel structure mortise and tenon connection node structure according to claim 5, characterized in that, The first cross beam (8) is hollow, one of the first cross beams (8) is arranged at the position of the third connecting hole (7), and the inner side of the first cross beam (8) is provided with a waist hole (9).

7. The modular steel structure mortise and tenon connection node structure according to claim 6, characterized in that, The lower module column (2) is provided with two second cross beams (10) corresponding to the two first cross beams (8) on the circumferential side, and the upper module column (1) and the two second cross beams (10) are perpendicular to each other in pairs.

8. The modular steel structure mortise and tenon connection joint structure according to any one of claims 1-2, 4-7, characterized in that, The number of the upper module column (1) and the lower module column (2) is one; and the connecting piece (5) is in the shape of a mouth character and is sleeved on the circumferential side of the tenon fastener (4).

9. The modular steel structure mortise and tenon connection joint structure according to any one of claims 1-2, 4-7, characterized in that, The number of the upper module column (1) and the lower module column (2) is two; the connecting piece (5) is in the shape of a sun and is sleeved on the circumferential side of two tenon fasteners (4), and is suitable for connecting two lower module columns (2); Or, the number of the upper module column (1) and the lower module column (2) is four; the connecting piece (5) is in the shape of a field and is sleeved on the circumferential side of four tenon fasteners (4), and is suitable for connecting four lower module columns (2).

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