Modular building connection node, modular building and construction method

Abstract

The application provides a modular building connecting node, a modular building and a construction method, the connecting node comprises tenons, the tenons are provided with a plurality of tenons, each tenon has a configuration with gradually increasing width in a first direction, the first direction is the assembly insertion direction of each tenon; a connecting piece has a plurality of connecting arms, each connecting arm is integrally formed with adjacent tenons; wherein the tenons are provided with first assembly holes, the connecting arms are provided with second assembly holes, and the axis of at least part of the first assembly holes is perpendicular to the axis of the second assembly holes. The application realizes the integration and standardization of node construction, the installation process is mainly plug-in positioning and secondarily bolt fastening, the on-site welding operation is free, the component types are few, the assembly process is clear, the assembly efficiency is improved, and the integrity and long-term use performance of the node connection are ensured.

Description

Technical Field

[0001] This invention relates to the field of modular building technology, and in particular to a modular building connection node, modular building, and construction method. Background Technology

[0002] Traditional modular building nodes mainly use two forms: bolt connection or mortise and tenon joint, but both have obvious shortcomings in engineering applications.

[0003] Traditional bolted connection nodes typically adopt a split structure, with each module having an independent connector at its end. During on-site assembly, multiple independent connectors need to be aligned with holes and locked at height at the intersection of multiple modules. This alignment is difficult and time-consuming. Furthermore, the stress on the node mainly depends on the shear and torsional resistance of the bolts themselves. Under complex load conditions, inter-layer relative displacement is prone to occur, often requiring additional reinforcement or strengthening measures.

[0004] While traditional mortise and tenon joints can achieve initial positioning, their connection rigidity is limited, and the vertical and horizontal bearing capacity of the joint area is relatively insufficient. After assembly, on-site welding or secondary reinforcement work is often required, which is different from the high-efficiency and welding-free construction requirements of prefabricated buildings.

[0005] In addition, existing node structures generally lack a systematic integrated design for pre-positioning and locking. During on-site assembly, the adjustment of the position between modules and the control of gaps largely depend on manual operation, resulting in large fluctuations in construction efficiency and accuracy. At the same time, the node components are numerous and scattered, making on-site management and installation procedures complex, which affects construction efficiency and long-term durability.

[0006] In summary, current modular building nodes still face significant technical bottlenecks in terms of installation efficiency, connection reliability, and construction consistency. There is an urgent need for an integrated node structure that combines rapid pre-positioning with overall rigid locking to improve assembly operability and overall structural performance under multi-module combination conditions. Summary of the Invention

[0007] The purpose of this invention is to provide a modular building connection node, a modular building, and a construction method to address the shortcomings in the aforementioned background technology.

[0008] The technical solution of this invention is: a modular building connection node, comprising:

[0009] The tenon is provided in a plurality of tenons, each tenon having a configuration with gradually increasing width in a first direction, the first direction being the assembly insertion direction of each tenon;

[0010] A connector having a plurality of connecting arms, each connecting arm being integrally formed with an adjacent tenon;

[0011] The tenon is provided with a first mounting hole, and the connecting arm is provided with a second mounting hole, wherein at least part of the axis of the first mounting hole is orthogonal to the axis of the second mounting hole.

[0012] Preferably, the connector has three first connecting arms distributed in a T-shape along the same plane, and the two tenons are respectively disposed within the two right-angled angles of the connector.

[0013] Preferably, the connector has four first connecting arms distributed in a cross shape along the same plane, and the four tenons are respectively disposed within the four right-angled angles of the connector.

[0014] Preferably, the connector has four first connecting arms and two second connecting arms. The four first connecting arms are arranged in a cross shape along the first plane, and the two second connecting arms are connected in a straight line along the second plane. The straight line is perpendicular to the first plane, and the intersection of the four first connecting arms coincides with the intersection of the two second connecting arms. The connector has one tenon in each of the four right angles in the first plane, and one tenon in each of the four right angles in the second plane.

[0015] Preferably, along the first direction, the length of the connector is greater than the length of the tenon.

[0016] Preferably, the tenon has a right-angled trapezoidal shape, and the connecting member is connected to the upper base surface and the height line surface of the tenon, respectively.

[0017] Preferably, along the first direction, the length of the connector is greater than the length of the tenon.

[0018] The technical solution of the present invention also includes: a modular building, which includes a plurality of adjacent building modules, and the above-mentioned modular building connection nodes for connecting adjacent building modules.

[0019] Preferably, the building module is provided with a mortise that matches the shape of the tenon.

[0020] The technical solution of the present invention also includes: a method for constructing modular building connection nodes as described above, comprising the following steps:

[0021] Insert the tenon into the mortise of the building module along the first direction until the tenon fits against the inner wall of the mortise and the connecting arm fits against the outer wall of the building module.

[0022] Install bolts in the first assembly hole to connect and lock the tenon to the building module;

[0023] Install bolts in the second assembly hole to connect and lock the connector to the building module.

[0024] The beneficial effects of this invention include: based on the same design concept, corresponding connection nodes with different configurations are provided for the assembly requirements of two, four, and eight building modules. The gradually widening tenon configuration achieves insertion guidance and multi-directional restraint, while orthogonally arranged bolts in two directions apply tightening forces in different spatial dimensions. This gives the node a comprehensive function of pre-positioning, all-directional constraint, and rigid locking, overcoming the limitations of single bolt connections (limited load-bearing capacity) and single tenon connections (insufficient rigidity). The connector is integrally formed with the tenon and extends to the module joint area, participating in gap control and fixing to the module surface through bolts. This allows multiple adjacent modules to be interconnected through the same component without additional reinforcement. Overall, this solution achieves integration and standardization of node construction. The installation process primarily uses insertion positioning, supplemented by bolt tightening, eliminating the need for on-site welding. It reduces the number of component types and clarifies the assembly process, improving assembly efficiency while ensuring the integrity and long-term performance of the node connection. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the configuration of the connecting node in Embodiment 1 of the present invention;

[0026] Figure 2 This is an assembly diagram of Embodiment 1 of the present invention;

[0027] Figure 3 This is a schematic diagram of the configuration of the connecting node in Embodiment 2 of the present invention;

[0028] Figure 4 This is an assembly diagram of Embodiment 2 of the present invention;

[0029] Figure 5 This is a schematic diagram of the configuration of the connecting node in Embodiment 3 of the present invention.

[0030] In the picture:

[0031] 1. Tenon; 11. First assembly hole;

[0032] 2. Connecting component; 21. First connecting arm; 22. Second connecting arm; 23. Second mounting hole;

[0033] 3. Building modules; 31. Mortise and tenon joints;

[0034] 4. Bolts. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] In the description of the embodiments of this invention, it should be understood that the terms "top," "bottom," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "set" and "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0037] Reference Appendix Figure 1-5 This invention provides a modular building connection node, comprising tenons 1 and connectors 2. Several tenons 1 are provided, and several connectors 2 have several connecting arms, each connecting arm being integrally formed with an adjacent tenon 1. Each tenon 1 has a gradually increasing width configuration in a first direction, which is the assembly insertion direction of each tenon 1. The tenon 1 has a first assembly hole 11, and the connecting arm has a second assembly hole 23. At least a portion of the axis of the first assembly hole 11 is orthogonal to the axis of the second assembly hole 23. Along the first direction, the length of the connector 2 is greater than the length of the tenon 1.

[0038] The aforementioned connecting nodes are used to connect adjacent building modules 3 to achieve modular building assembly. In use, the tenon 1 and the pre-set mortise 31 on the building module 3 form an interlocking fit. The gradually increasing width of the tenon 1 acts as a guide during insertion, guiding the building module 3 to align at the designed position. After assembly, the mating surfaces of this configuration and the mortise 31 form limiting constraints in multiple directions. Connecting arms are positioned between adjacent tenons 1, connecting each tenon 1 into a whole, and then, after the tenon 1 is joined to the corresponding building module 3, connecting the building modules 3 together. The connecting arm's dimension along the first direction exceeds the length of the tenon 1, and after installation, it is located between adjacent building modules. The gap area between modules 3 works together with the tenon 1 to control the gap between modules; bolts 4 of corresponding orientations are respectively inserted into the first assembly hole 11 and the second assembly hole 23. The bolts 4 in the first assembly hole 11 are used to lock the relative position between the tenon 1 and the building module 3, and the bolts 4 in the second assembly hole 23 are used to fit and fix the connecting arm to the surface of the building module 3. The orthogonal layout of the two assembly hole axes allows the bolts 4 in the two directions to apply fastening force in different spatial dimensions, which can improve the resistance of the connection node under load modes such as shearing, pull-out and torsion.

[0039] Based on the above technical solution, this invention integrates mortise and tenon joints and bolt 4 locking into the same node structure. The gradually widening configuration of the tenon 1 achieves insertion guidance and multi-directional restraint. Combined with the orthogonally arranged bolts 4 applying tightening forces in different spatial dimensions, the node possesses comprehensive functions of pre-positioning, all-directional constraint, and rigid locking, overcoming the limitations of a single bolt 4 connection's single load-bearing mode and insufficient rigidity of a single mortise and tenon connection. The connecting component 2 is integrally formed with the tenon 1 and extends to the module joint area, participating in gap control and being fixed to the module surface through bolt 4. This allows multiple adjacent modules to be interconnected through the same component, eliminating the need for additional reinforcement. Overall, this solution achieves integration and standardization of the node structure. The installation process primarily uses insertion positioning, supplemented by bolt 4 tightening, eliminating on-site welding operations. It reduces the number of component types and clarifies the assembly process, improving assembly efficiency while ensuring the integrity and long-term performance of the node connection.

[0040] Another aspect of the present invention provides a modular building comprising a plurality of adjacent building modules 3 and a modular building connection node as described above. This connection node connects adjacent building modules 3 to achieve modular building assembly. Each building module 3 has a mortise 31 adapted to the shape of a tenon 1. The mortise 31's groove shape matches the gradually increasing width configuration of the tenon 1, ensuring a close contact in both the insertion direction and its orthogonal direction after insertion, guaranteeing the tightness of the mortise and tenon joint. A connecting arm extends along a first direction to the gap area between adjacent building modules 3, participating in gap width control through its own thickness and transferring the load of adjacent modules to the rigid frame formed by the tenon 1 and the connecting member 2 through a connection method that adheres to the module surface. Under the combined action of mortise and tenon positioning and bolt 4 locking, multiple building modules 3 achieve reliable constraints in all directions at the intersection node, ensuring the structural integrity and deformation resistance of the modular building under normal use and under conditions such as earthquakes and wind loads. Furthermore, the node components are all prefabricated integrated components, which helps ensure the uniformity of node quality.

[0041] In actual implementation, the number and shape of the tenons 1, the number of connecting arms, and the relative orientation and connection angle between each tenon 1 and the corresponding connecting arm can all be adaptively adjusted according to the arrangement of the building modules 3 to be connected, the number of modules at the intersection node, and the stress requirements, and are not limited to a certain fixed configuration. The technical solution of the present invention will be described in detail below with reference to specific embodiments.

[0042] Example 1

[0043] This embodiment provides a modular building, which includes two building modules 3 arranged adjacent to each other in the horizontal direction. The top of the two building modules 3 is provided with mortise and tenon grooves 31, and the openings of the mortise and tenon grooves 31 on the two building modules 3 are arranged opposite each other, and the two mortise and tenon grooves 31 are in the same horizontal plane.

[0044] Reference Appendix Figure 1-2 The modular building also includes a modular building connection node for connecting two building modules 3. The connection node includes two tenons 1 and a connector 2. The connector 2 has three first connecting arms 21 distributed in a T-shape along the horizontal plane. The two tenons 1 are respectively set in the two right-angled angles of the connector 2, and the connector 2 is integrally formed with the corresponding tenon 1 at the right-angled angle.

[0045] Each tenon 1 has a right-angled trapezoidal structure, that is, its top view projection is a right-angled trapezoid, which has an upper base, a lower base, a height line, and a hypotenuse. The tenon 1 is connected to the connector 2 by the side where the upper base is located and the side where the height line is located. The side where the lower base is located and the side where the hypotenuse is located are exposed assembly surfaces, used to insert into the mortise 31 of the building module 3.

[0046] The tenon 1 is provided with a first assembly hole 11, and the connecting arm is provided with a second assembly hole 23. The axis of the first assembly hole 11 is orthogonal to the axis of the second assembly hole 23. Along the assembly insertion direction of each tenon 1, the length of the connecting piece 2 is greater than the length of the tenon 1. The building module 3 is provided with matching assembly holes corresponding to the first assembly hole 11 and the second assembly hole 23 for installing connecting bolts 4.

[0047] The inner contour of the mortise 31 on the building module 3 is adapted to the right-angled trapezoidal structure of the tenon 1. The side wall of the mortise 31 is in close contact with the side of the tenon 1 where the hypotenuse is located and the side where the bottom is located. The bottom wall of the mortise 31 provides vertical support for the tenon 1.

[0048] Example 2

[0049] This embodiment provides a modular building, which includes four building modules 3. The four building modules 3 are arranged in two rows and two columns adjacent to each other in the horizontal direction. The top of each of the four building modules 3 is provided with a tenon 31. The opening of some of the tenons 31 faces the center of the intersection of the four building modules 3. Multiple tenons 31 are in the same horizontal plane.

[0050] Reference Appendix Figure 3-4 The modular building includes not only the modular building connection node for connecting two building modules 3 as described in Embodiment 1, but also the modular building connection node for connecting four building modules 3. The latter is set at the central intersection of the four building modules 3 to interconnect the four. The former further connects the end docking positions of adjacent building modules 3 based on the fact that the four modules have been interconnected through the central node.

[0051] The connection node for connecting the four building modules 3 includes four tenons 1 and connectors 2. The connectors 2 have four first connecting arms 21 distributed in a cross shape along the horizontal plane. The four tenons 1 are respectively set in the four right angles of the connectors 2, and the connectors 2 are integrally formed at the corresponding tenons 1 at the right angles.

[0052] Each tenon 1 has a right-angled trapezoidal structure, that is, its top view projection is a right-angled trapezoid, which has an upper base, a lower base, a height line, and a hypotenuse. The tenon 1 is connected to the connector 2 by the side where the upper base is located and the side where the height line is located. The side where the lower base is located and the side where the hypotenuse is located are exposed assembly surfaces, used to insert into the mortise 31 of the building module 3.

[0053] The tenon 1 is provided with a first assembly hole 11, and the connecting arm is provided with a second assembly hole 23. The axis of the first assembly hole 11 is orthogonal to the axis of the second assembly hole 23. Along the assembly insertion direction of each tenon 1, the length of the connecting piece 2 is greater than the length of the tenon 1. The building module 3 is provided with matching assembly holes corresponding to the first assembly hole 11 and the second assembly hole 23 for installing connecting bolts 4.

[0054] The inner contour of the mortise 31 on the building module 3 is adapted to the right-angled trapezoidal structure of the tenon 1. The side wall of the mortise 31 is in close contact with the side of the tenon 1 where the hypotenuse is located and the side where the bottom is located. The bottom wall of the mortise 31 provides vertical support for the tenon 1.

[0055] Example 3

[0056] This embodiment provides a modular building comprising eight building modules 3 arranged in two layers, with each layer containing four building modules 3. The four building modules 3 on the same layer are arranged adjacently in two rows and two columns along the horizontal direction. Each of the eight building modules 3 has a tenon 31. The openings of some tenons 31 face the center where the eight building modules 3 intersect. The tenons 31 located at the center of the intersection of the four building modules 3 on the lower layer have horizontal openings, the tenons 31 located at the center of the intersection of the four building modules 3 on the upper layer have horizontal openings, and the tenons 31 located at the junction of the upper and lower layers have vertical openings.

[0057] Reference Appendix Figure 5 The modular building also includes modular building connection nodes for connecting eight building modules 3, as described in Embodiment 1 for connecting two building modules 3, or as described in Embodiment 2 for connecting four building modules 3. The tenon 31 formed at the end of the building module 3 away from the center of intersection of the eight building modules 3 has its opening direction set according to whether the selected connection node is for connecting two building modules 3 or for connecting four building modules 3.

[0058] The connection node for connecting the eight building modules 3 includes eight tenons 1 and connectors 2. The connectors 2 have four first connecting arms 21 and two second connecting arms 22. The four first connecting arms 21 are distributed in a cross shape along the horizontal plane, and the two second connecting arms 22 are connected in a straight line along the vertical plane. The straight line is perpendicular to the horizontal plane, and the intersection of the four first connecting arms 21 coincides with the intersection of the two second connecting arms 22. The connectors 2 have one tenon 1 in each of the four right angles in the horizontal plane and one tenon 1 in each of the four right angles in the vertical plane. The four vertical tenons 1 are located in the same vertical plane.

[0059] Each tenon 1 has a right-angled trapezoidal structure, that is: the top view projection of four tenons 1 located in the same horizontal plane is a right-angled trapezoid, and the side view projection of four tenons 1 located in the same vertical plane is a right-angled trapezoid. The right-angled trapezoid has an upper base, a lower base, a height line, and a hypotenuse. The tenon 1 is connected to the connector 2 by the side where the upper base is located and the side where the height line is located. The side where the lower base is located and the side where the hypotenuse is located are exposed assembly surfaces for insertion into the mortise 31 of the building module 3.

[0060] The tenon 1 is provided with a first assembly hole 11, and the connecting arm is provided with a second assembly hole 23. The axis of the first assembly hole 11 on the four tenons 1 located in the same horizontal plane extends vertically, and the axis of the second assembly hole 23 on the four tenons 1 located in the same vertical plane extends horizontally. Along the assembly insertion direction of each tenon 1, the length of the connecting piece 2 is greater than the length of the tenon 1. The building module 3 is provided with matching assembly holes corresponding to the first assembly hole 11 and the second assembly hole 23 for installing connecting bolts 4.

[0061] The inner contour of the mortise 31 on the building module 3 is adapted to the right-angled trapezoidal structure of the tenon 1, and the inner walls of the mortise 31 in each direction respectively form a close contact with the corresponding outer wall of the tenon 1.

[0062] Compared with existing technologies, this invention has at least the following beneficial effects: Based on the same design concept, corresponding connection nodes with different configurations are provided for the assembly requirements of two, four, and eight building modules 3. The gradually widening configuration of the tenon 1 achieves insertion guidance and multi-directional limiting. Combined with orthogonally arranged bolts 4 applying tightening forces in different spatial dimensions, the node possesses comprehensive functions of pre-positioning, all-directional constraint, and rigid locking, overcoming the limitations of a single bolt 4 connection having a single load-bearing mode and insufficient rigidity of a single tenon-and-mortise connection. The connecting component 2 is integrally formed with the tenon 1 and extends to the module joint area, participating in gap control and being fixed to the module surface through the bolts 4. This allows multiple adjacent modules to be interconnected through the same component, eliminating the need for additional reinforcement. Overall, this solution achieves the integration and standardization of node construction. The installation process primarily uses insertion positioning, supplemented by bolt 4 tightening, eliminating on-site welding operations. It features fewer component types and a clear assembly process, improving assembly efficiency while ensuring the integrity and long-term performance of the node connection.

[0063] The above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A modular building connection node, characterized in that, include: The tenon is provided in a plurality of tenons, each tenon having a configuration with gradually increasing width in a first direction, the first direction being the assembly insertion direction of each tenon; A connector having a plurality of connecting arms, each connecting arm being integrally formed with an adjacent tenon; The tenon is provided with a first mounting hole, and the connecting arm is provided with a second mounting hole, wherein at least part of the axis of the first mounting hole is orthogonal to the axis of the second mounting hole.

2. The modular building connection node according to claim 1, characterized in that, The connector has three first connecting arms arranged in a T-shape along the same plane, and the two tenons are respectively located within the two right-angled angles of the connector.

3. The modular building connection node according to claim 1, characterized in that, The connector has four first connecting arms distributed in a cross shape along the same plane, and the four tenons are respectively disposed within the four right-angled angles of the connector.

4. The modular building connection node according to claim 1, characterized in that, The connector has four first connecting arms and two second connecting arms. The four first connecting arms are arranged in a cross shape along the first plane, and the two second connecting arms are connected in a straight line along the second plane. The straight line is perpendicular to the first plane, and the intersection of the four first connecting arms coincides with the intersection of the two second connecting arms. The connector has one tenon in each of the four right angles in the first plane, and one tenon in each of the four right angles in the second plane.

5. The modular building connection node according to any one of claims 1-4, characterized in that, Along the first direction, the length of the connector is greater than the length of the tenon.

6. The modular building connection node according to any one of claims 1-4, characterized in that, The tenon is in the shape of a right trapezoid, and the connecting piece is connected to the top surface and the height surface of the tenon respectively.

7. The modular building connection node according to claim 6, characterized in that, Along the first direction, the length of the connector is greater than the length of the tenon.

8. A modular building, characterized in that, It includes a plurality of adjacent building modules and a modular building connection node for connecting adjacent building modules, wherein the modular building connection node is the modular building connection node according to any one of claims 1-7.

9. The modular building according to claim 8, characterized in that, The building module is provided with a mortise that matches the shape of the tenon.

10. A method for constructing modular building connection nodes according to any one of claims 1-7, characterized in that, Including the following steps: Insert the tenon into the mortise of the building module along the first direction until the tenon fits against the inner wall of the mortise and the connecting arm fits against the outer wall of the building module. Install bolts in the first assembly hole to connect and lock the tenon to the building module; Install bolts in the second assembly hole to connect and lock the connector to the building module.

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