Modular steel structure frame joint connecting structure and connecting method thereof

Abstract

The application relates to a novel modular steel structure frame node connecting structure and a connecting method thereof, and relates to the technical field of steel structure frames.The connecting structure comprises a connecting piece, the connecting piece comprises a plurality of fixed columns, the plurality of fixed columns are fixedly connected in the middle, coaxial connecting columns are arranged at the two ends of the fixed columns, and the plurality of connecting columns are arranged in a circle; a plurality of prefabricated steel components are arranged in one-to-one correspondence with the connecting columns, one end of the prefabricated steel component is coaxially matched with the corresponding connecting column, a fastener is arranged between the prefabricated steel component and the corresponding connecting column, and the fastener is used for fixing the prefabricated steel component and the corresponding connecting column; a plurality of reinforcing sleeve pipes are arranged in one-to-one correspondence with the prefabricated steel components, one end of the reinforcing sleeve pipe is sleeved on the corresponding prefabricated steel component, the other end is sleeved on the corresponding fixed column, and the fixed column and the prefabricated steel component are detachably connected with the reinforcing sleeve pipe.The application can improve the stability of the steel structure frame node, and further improve the stability of the steel structure frame.

Description

Technical Field

[0001] This application relates to the technical field of steel structure frames, and in particular to a novel modular steel structure frame node connection structure and its connection method. Background Technology

[0002] Modular steel frame refers to a building constructed by manufacturing housing units or components according to uniform and standard building specifications, and then transporting them to the construction site for assembly. Its characteristics include lightweight construction, energy saving and environmental protection, fast construction speed, and high degree of industrialization.

[0003] In steel frame structures, the connection nodes between precast steel components such as precast steel beams and precast steel columns are the most important nodes in modular steel frame structures. The connection nodes directly affect the assembly speed and stability of the steel frame structure, thus directly restricting the construction speed and construction quality of buildings using steel frame structures.

[0004] Currently, welding, bolting, and riveting are the most common methods for connecting steel frame nodes. Specifically, welding has high production efficiency, high weld strength, and good sealing performance; bolted connections are simple in structure, come in various types, and are easy to assemble and disassemble; riveting has high strength, but is complex to construct, and is now rarely used except for structures that directly bear dynamic loads.

[0005] Regarding the aforementioned technologies, existing steel structure frame nodes mostly use bolted connections. Although bolted connections can achieve rapid connection of several precast steel components, in order to ensure the stability of the connection between precast steel components, a large number of bolts are required. This necessitates drilling more holes in the precast steel components, which affects the structural strength of the ends of the precast steel components, thereby affecting the connection stability between several precast steel components, and consequently affecting the stability of the steel structure frame node. Summary of the Invention

[0006] This application provides a novel modular steel frame node connection structure and its connection method. The purpose is to improve the connection structure of the steel frame node, enhance the stability of the connection between several prefabricated steel components, thereby improving the stability of the steel frame node and ensuring the strength and stability of the steel frame.

[0007] Firstly, the novel modular steel frame node connection structure provided in this application adopts the following technical solution:

[0008] A novel modular steel frame node connection structure includes connectors, each connector comprising a plurality of fixed columns, fixedly connected at the middle, with connecting columns coaxially arranged at both ends of each fixed column, and the plurality of connecting columns arranged in a circular pattern; a plurality of precast steel components, each precast steel component corresponding to one of the connecting columns, one end of each precast steel component coaxially engaging with the corresponding connecting column, and fasteners provided between each precast steel component and the corresponding connecting column for fixing the precast steel component and the corresponding connecting column; and a plurality of reinforcing sleeves, each reinforcing sleeve corresponding to one of the precast steel components, one end of each reinforcing sleeve sleeved on the corresponding precast steel component, and the other end sleeved on the corresponding fixed column, with both the fixed column and the precast steel component detachably connected to the reinforcing sleeve.

[0009] By adopting the above technical solution, since the precast steel components are inserted into the connecting columns and the precast steel components are fixed to the connectors with fasteners, it is convenient to assemble and connect the precast steel components and connectors, which also facilitates the connection of steel structure frame nodes.

[0010] Based on this, the reinforcing sleeve is installed across the outside of the fixing column of the connector and the precast steel component. This expands the connection point, which was originally concentrated at the connecting column, into a wrapping connection along a length of the fixing column and the precast steel component. This greatly improves the stiffness and bending resistance of the connection between the connector and the precast steel component, effectively disperses the nodal stress, and thus increases the stability of the fixation of the precast steel component and the connector as well as the connection strength.

[0011] Since the reinforcing sleeve can be detachably connected to the fixing column and the precast steel components, it is convenient to disassemble and assemble the reinforcing sleeve.

[0012] Therefore, based on the coordinated design of reinforcing sleeves, connectors, and precast steel components, reinforcing sleeves can increase the structural stability of the ends of precast steel components and fixed columns, thereby effectively increasing the stability of the connection of several precast steel structural components and thus improving the stability of steel frame nodes.

[0013] Optionally, the fastener includes a plurality of first bolts, the first bolts passing through the corresponding precast steel member and the corresponding connecting column; the plurality of first bolts are all located within the corresponding reinforcing sleeve.

[0014] By adopting the above technical solution, the fastener achieves the connection and fixation between the prefabricated steel component and the corresponding connecting column through the design of the first bolt.

[0015] Based on this, since the first bolts are all located inside the reinforcing sleeve, the reinforcing sleeve can protect the first bolts, which can reduce the impact of environmental factors on the first bolts, thereby improving the service life of the first bolts and ensuring the stability of the connection between the precast steel components and the connectors.

[0016] Optionally, the inner wall of the reinforcing sleeve and the outer wall of the corresponding precast steel component are spaced apart to form a filling cavity, and the filling cavity is filled with fixing adhesive.

[0017] By adopting the above technical solution, since the first bolt is located inside the reinforcing sleeve, and a filling cavity is formed between the reinforcing sleeve and the precast steel component, the nut and bolt of the first bolt are both located inside the filling cavity. Therefore, after the fixing adhesive is injected into the filling cavity and cured, the fixing adhesive can wrap and seal all the nuts on the first bolt, thereby preventing the nuts from loosening or corroding. In addition, the fixing adhesive can also fill all the micro gaps between the precast steel component, the connecting column and the reinforcing sleeve, thereby improving the stability of the connection between the precast steel component, the connecting column and the reinforcing sleeve.

[0018] Optionally, a sealing short tube is fitted on the outside of the precast steel component, and a reinforcing sleeve is fitted on the outside of the corresponding sealing short tube, and the sealing short tube closes the glue filling cavity.

[0019] By adopting the above technical solution, since the sealing short tube can seal the glue filling cavity, the sealing short tube can prevent the fixing glue and the first bolt from contacting the air, thereby reducing the impact of environmental factors on the fixing glue and the first bolt.

[0020] Optionally, a diagonal rigid rod is provided between two adjacent reinforcing sleeves, and the two ends of the diagonal rigid rod are respectively connected to the corresponding reinforcing sleeve.

[0021] By adopting the above technical solution and setting up the diagonal rigid rod, a rigid support can be established between two adjacent reinforcing sleeves, thereby improving the stability of the entire connection structure.

[0022] Optionally, the fixed column is slidably connected to the reinforcing sleeve along its own length; the diagonal rigid rod includes two diagonal rods, which are coaxially arranged, and one end of the diagonal rod is rotatably connected to one end of the other diagonal rod. The two diagonal rods are arranged in a one-to-one correspondence with two adjacent reinforcing sleeves, and the ends of the two diagonal rods that are far apart from each other are rotatably connected to the corresponding reinforcing sleeves; a rigid connector is provided on the diagonal rigid rod, and both diagonal rods are detachably connected to the rigid connector.

[0023] By adopting the above technical solution, the diagonal bracing rigid rod includes two diagonal bracing rods, which are rotatably connected. Each of the two diagonal bracing rods corresponds to one of the two adjacent reinforcing sleeves, and the diagonal bracing rods are rotatably connected to their respective reinforcing sleeves. Furthermore, since the reinforcing sleeves are slidably connected to their corresponding fixed columns, when a single diagonal bracing rod is pushed, the two diagonal bracing rods rotate relative to each other, and at this time, the two reinforcing sleeves slide synchronously on their respective fixed columns.

[0024] Based on this principle, after the precast steel components are connected to the connectors, one of the diagonal braces within all the rigid diagonal bracing members is simultaneously pushed. This allows all the reinforcing sleeves to slide synchronously to their corresponding positions, thus connecting the precast steel components to their corresponding fixed columns. Therefore, the structural design of the rigid diagonal bracing members facilitates the rapid connection between the precast steel components and the connectors, thereby accelerating the assembly of the steel frame nodes and increasing the assembly speed of the steel frame.

[0025] Based on this, the rigid connector is set between the two diagonal braces. When the rigid connector is disassembled, the two diagonal braces can rotate normally, but at this time the rigid brace does not have the function of rigid support. When the rigid connector is installed on the two diagonal braces, the rigid support can lock the two diagonal braces in the coaxial position, so that the rotational connection of the two diagonal braces is transformed into a rigid connection. This gives the rigid brace a stiffness constraint, which can resist node deformation.

[0026] Optionally, the diagonal brace includes a movable rod, a sleeve, and a shock-absorbing spring. The sleeve is coaxially sleeved on the outside of the movable rod, and the movable rod is slidably connected to the sleeve along its own axial direction. The shock-absorbing spring is coaxially sleeved on the outside of the movable rod, with one end connected to the sleeve and the other end connected to the movable rod. The end of the movable rod away from the sleeve along its own axial direction is connected to the corresponding reinforcing sleeve, and the end of the sleeve away from the movable rod along its own axial direction is rotatably connected to the sleeve of the adjacent diagonal brace.

[0027] By adopting the above technical solution, the diagonal brace, through the coordinated design of the movable rod, sleeve and damping spring, causes the damping spring to contract or stretch accordingly when the movable rod and sleeve slide against each other. This gives the diagonal brace a damping and buffering function, which can improve the seismic performance of the steel structure frame joint.

[0028] Optionally, the diagonal brace further includes a rigid support member, one end of which is detachably connected to the movable rod, and the other end of which is detachably connected to the sleeve.

[0029] By adopting the above technical solution, the rigid support on the diagonal brace provides vibration damping when the rigid support is disassembled; and when the rigid support is installed on the diagonal brace, the rigid support spans between the movable rod and the sleeve, locking the relative sliding between the movable rod and the sleeve. At this time, the diagonal brace returns to the function of an ordinary rigid rod, providing pure rigid support force and limiting node displacement.

[0030] Optionally, the system may also include a plurality of reinforcing rods, each of which is corresponding to a fixed post. The reinforcing rods are arranged parallel to and spaced apart from the corresponding fixed posts. Each reinforcing rod is located between two reinforcing sleeves on the corresponding fixed post along its own length direction, and both ends of the reinforcing rod are detachably connected to the corresponding reinforcing sleeves.

[0031] By adopting the above technical solution, based on the design of the reinforcing rod, the reinforcing rod can establish rigid support between two reinforcing sleeves on the same fixed column, thereby improving the stability of the entire connection structure.

[0032] Secondly, the novel modular steel structure frame node connection method provided in this application adopts the following technical solution:

[0033] A novel modular steel structure frame node connection method, employing the aforementioned novel modular steel structure frame node connection structure, includes the following steps:

[0034] S1. Component manufacturing: Production of prefabricated steel components, connectors and reinforcing sleeves;

[0035] S2, Preliminary assembly;

[0036] S21. Insert several precast steel components into the corresponding connecting columns;

[0037] S22. Connect and fix the precast steel components to the corresponding connecting columns;

[0038] S23. Check the connection stability between the precast steel components and the corresponding connecting columns;

[0039] S3, Enhanced Assembly;

[0040] S31. Install the reinforcing sleeve onto the outside of the precast steel component and the corresponding fixed column;

[0041] S32. Connect and fix the precast steel components and fixed columns to the corresponding reinforcing sleeves;

[0042] S33. Check the stability of the connection between the reinforcing sleeve and the precast steel component, as well as between the reinforcing sleeve and the fixed column.

[0043] By adopting the above technical solution and connection method, it is possible to achieve rapid connection between several prefabricated steel components and connectors, and to improve the stability of steel structure frame nodes.

[0044] In summary, this application includes at least one of the following beneficial technical effects:

[0045] 1. This application improves the stiffness and bending resistance of the connection between the connector and the precast steel component by designing a reinforced sleeve, effectively dispersing the stress at the node, thereby increasing the stability of the fixation between the precast steel component and the connector and the connection strength, thus increasing the stability of the steel frame node and improving the stability of the steel frame structure.

[0046] 2. The steel structure frame node connection structure of this application, through the design of connectors, prefabricated steel components and reinforcing sleeves, does not require additional tools and has no technical threshold, and can quickly realize the connection and assembly of steel structure frame nodes, thereby facilitating the rapid assembly of steel structure frames.

[0047] 3. By setting up the reinforcing sleeve and forming the filling cavity, this application can protect the first bolt, improve the service life of the first bolt, thereby further improving the connection strength between the connector and the precast steel component, and thus improving the stability of the steel structure frame node and the stability of the steel structure frame structure.

[0048] 4. This application improves the stability of the entire connection structure by designing a diagonal rigid strut to establish a rigid support between two adjacent reinforcing sleeves.

[0049] 5. This application uses the design of two diagonal braces to enable all reinforcing sleeves to move synchronously. This facilitates the synchronous sliding of all reinforcing sleeves to the corresponding positions to achieve the connection between the precast steel components and the corresponding fixed columns. This facilitates the rapid connection between the precast steel components and the connectors, thereby accelerating the assembly of the steel structure frame nodes and improving the assembly speed of the steel structure frame. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the overall structure of the connection structure in Embodiment 1 of this application.

[0051] Figure 2 This is a schematic diagram of the overall structure of the connector and several prefabricated steel components connected in Embodiment 1 of this application.

[0052] Figure 3 This is a partial cross-sectional structural diagram of the connection between the connector and the precast steel component in Embodiment 1 of this application.

[0053] Figure 4 This is a cross-sectional view of the connection structure of Embodiment 1 of this application.

[0054] Figure 5 yes Figure 4 A magnified schematic diagram of part A in the middle.

[0055] Figure 6 This is a cross-sectional view of the connection structure of Embodiment 1 of this application at the location of the reinforcing sleeve.

[0056] Figure 7 This is a schematic diagram of the overall structure of the connection structure in Embodiment 2 of this application.

[0057] Figure 8 This is a schematic diagram of the overall structure of the connection structure after the rigid connector is disassembled in Embodiment 2 of this application.

[0058] Figure 9 This is a partial structural schematic diagram of the rigid connector of Embodiment 2 of this application.

[0059] Figure 10 This is a schematic diagram of the overall structure of the rigid tube in Embodiment 2 of this application.

[0060] Figure 11 This is a schematic diagram of the overall structure of the diagonal brace in Embodiment 3 of this application.

[0061] Figure 12 This is a cross-sectional structural schematic diagram of the diagonal brace of Embodiment 3 of this application.

[0062] In the diagram, 1. Connector; 11. Fixing column; 12. Connecting column; 121. Mounting hole; 2. Precast steel component; 21. Butt hole; 3. Fastener; 31. First bolt; 4. Reinforcing sleeve; 41. Second bolt; 42. Glue filling ring groove; 43. Sealing short pipe; 5. Glue filling cavity; 6. Diagonal brace assembly; 61. Diagonal brace rigid rod; 611. Diagonal brace rod; 6111. Movable rod; 6112. Sleeve; 6113. Shock-absorbing spring; 62. Mounting seat; 63. Rigid connector; 631. Fixing plate; 632. Rigid bolt; 633. Rigid pipe; 6331. Half pipe; 6332. Through hole; 6333. Clearance hole; 64. Rigid support; 7. Reinforcing assembly; 71. Reinforcing rod; 72. Fixing seat. Detailed Implementation

[0063] The following is in conjunction with the appendix Figure 1 - Appendix Figure 12 This application will be described in further detail below.

[0064] Example 1: A novel modular steel frame node connection structure, referring to... Figure 1 and Figure 2It includes a connector 1, a number of precast steel components 2 and a number of fasteners 3. The number of precast steel components 2 are arranged sequentially at intervals along the circumference of the connector 1, and one end of the precast steel component 2 is connected to the connector 1. The fasteners 3 are arranged one-to-one with the precast steel components 2, and the fasteners 3 are arranged between the connector 1 and the corresponding precast steel component 2 mechanism.

[0065] The connection of connector 1 and fastener 3 enables the connection of several prefabricated steel components 2, thereby achieving rapid assembly of steel structure frame nodes.

[0066] Reference Figure 2 and Figure 3 The connector 1 includes several fixed posts 11, which are fixedly connected at the middle of their length direction. Each fixed post 11 has a connecting post 12 at both ends. The connecting post 12 is coaxially fixedly connected to the fixed post 11, and the connecting post 12 is arranged in a circle. Several mounting holes 121 are opened through the side wall of the connecting post 12.

[0067] In this embodiment, refer to Figure 2 There are two fixing posts 11, and the two fixing posts 11 are connected perpendicularly to each other, which makes the two fixing posts 11 form a cross shape. The connector 1 is made of high-strength steel.

[0068] Reference Figure 2 and Figure 3 Each precast steel component 2 corresponds to a fixed column 11, and the precast steel component 2 and the corresponding fixed column 11 are coaxially arranged, with one end of the precast steel component 2 being coaxially inserted into the corresponding fixed column 11. Several connecting holes 21 are provided through the side wall of the precast steel component 2, and the connecting holes 21 on the precast steel component 2 correspond one-to-one with the mounting holes 121 on the corresponding fixed column 11, and the connecting holes 21 and the corresponding mounting holes 121 are coaxially connected. In this embodiment, the precast steel component 2 is a precast steel beam or a precast steel column.

[0069] Reference Figure 2 and Figure 3 The fastener 3 includes a plurality of first bolts 31, each of which is provided in a one-to-one correspondence with the mating hole 21 on the corresponding precast steel component 2. The first bolts 31 are coaxially inserted into the corresponding mating hole 21 and are coaxially inserted into the corresponding mounting hole 121.

[0070] Fastener 3, through the setting of the first bolt 31, achieves a locking connection between the precast steel component 2 and the connector 1. At the same time, this design facilitates the assembly of the precast steel component 2 and the connector 1, thereby facilitating the connection of several precast steel components 2, and also facilitating the rapid assembly of steel structure frame nodes.

[0071] Reference Figure 1 and Figure 4The fixed column 11 is coaxially fitted with reinforcing sleeves 4 at both ends, and the length direction of the reinforcing sleeves 4 is arranged along the length direction of the corresponding fixed column 11. Several reinforcing sleeves 4 are arranged in a circle. One end of the reinforcing sleeve 4 is fitted on the outside of the corresponding fixed column 11, and the other end is coaxially fitted on the outside of the corresponding precast steel component 2. The fixed column 11 and the precast steel component 2 are detachably connected to the corresponding reinforcing sleeve 4.

[0072] Based on the setting of the reinforcing sleeve 4, the reinforcing sleeve 4 is connected across the outside of the fixing post 11 of the connector 1 and the precast steel component 2, expanding the connection point originally concentrated at the connecting post 12 into a wrapping connection along a length of the fixing post 11 and the precast steel component 2. This greatly improves the stiffness and bending resistance of the connection between the connector 1 and the precast steel component 2, effectively disperses the nodal stress, and thus increases the stability of the fixation of the precast steel component 2 and the connector 1 as well as the connection strength.

[0073] In this embodiment, refer to Figure 4 and Figure 5 The reinforcing sleeve 4 is provided with several second bolts 41, which are respectively connected to the corresponding fixed column 11 and the corresponding precast steel component 2. Based on the setting of the second bolts 41, a detachable connection between the reinforcing sleeve 4 and the fixed column 11 and the precast steel component 2 is realized, which also facilitates the installation of the reinforcing sleeve 4 and reduces the impact of the setting of the reinforcing sleeve 4 on the assembly speed of the steel structure frame node.

[0074] Reference Figure 5 and Figure 6 The reinforcing sleeve 4 has a glue-filling ring groove 42 at one end facing the corresponding precast steel component 2. The glue-filling ring groove 42 is coaxially arranged with the corresponding precast steel component 2, and the inner side wall of the glue-filling ring groove 42 is spaced apart from the outer side wall of the corresponding precast steel component 2. The connecting column 12 is located in the corresponding glue-filling ring groove 42, and several first bolts 31 are all located in the corresponding glue-filling ring groove 42.

[0075] The opening of the glue-filled annular groove 42 allows the first bolt 31 to be located inside the reinforcing sleeve 4. The reinforcing sleeve 4 can protect the first bolt 31, which can reduce the impact of environmental factors on the first bolt 31, thereby improving the service life of the first bolt 31 and ensuring the stability of the connection between the precast steel component 2 and the connector 1.

[0076] Reference Figure 5 and Figure 6 The inner sidewall of the filling ring groove 42 and the outer sidewall of the corresponding precast steel component 2 are spaced apart to form a filling cavity 5. The nut of the first bolt 31 and the corresponding nut are located in the filling cavity 5, and the filling cavity 5 is filled with fixing glue.

[0077] Based on the formation of the filling cavity 5, high-strength fixing adhesive is injected into the filling cavity 5. After the fixing adhesive cures, it can wrap and seal all the nuts on the first bolts 31, thereby preventing the nuts from loosening or corroding, thus further improving the service life of the first bolts 31. In addition, the fixing adhesive can also fill all the micro gaps between the precast steel component 2, the connecting column 12 and the reinforcing sleeve 4, forming a dense adhesive layer, which significantly improves the friction and bonding strength of the contact surface, thereby improving the stability of the connection between the precast steel component 2, the connecting column 12 and the reinforcing sleeve 4. Furthermore, the coordinated arrangement of the cured adhesive, the first bolts 31, the reinforcing sleeve 4 and the second bolts 41 forms a composite connection between the precast steel component 2 and the connector 1 that combines rigidity and toughness, greatly improving the load-bearing capacity, fatigue resistance and sealing performance of the connection between the precast steel component 2 and the connector 1, thereby improving the overall load-bearing capacity, fatigue resistance and sealing performance of the steel structure frame node.

[0078] Reference Figure 5 A sealing short tube 43 is provided between the precast steel component 2 and the corresponding reinforcing sleeve 4. The sealing short tube 43 is coaxially inserted with the filling ring groove 42. The sealing short tube 43 is sleeved outside the precast steel component 2, and the reinforcing sleeve 4 is sleeved outside the sealing short tube 43. The sealing short tube 43 closes the filling cavity 5.

[0079] Based on the setting of the sealing short tube 43, the sealing short tube 43 can seal the glue filling cavity 5. On the one hand, the sealing short tube 43 can prevent the fixing glue and the first bolt 31 from contacting the air, thereby reducing the impact of environmental factors on the fixing glue and the first bolt 31. On the other hand, the sealing short tube 43 can support the connection between the reinforcing sleeve 4 and the precast steel component 2, and prevent the reinforcing sleeve 4 from deforming under the pressure of the second bolt 41.

[0080] In this embodiment, refer to Figure 5 The second bolt 41 between the reinforcing sleeve 4 and the corresponding precast steel component 2 passes through the corresponding sealing short pipe 43, which enables a detachable connection between the precast steel component 2, the reinforcing sleeve 4 and the sealing short pipe 43.

[0081] Reference Figure 1 and Figure 4 A diagonal bracing assembly 6 is provided between two adjacent reinforcing sleeves 4. The diagonal bracing assembly 6 includes a diagonal bracing rigid rod 61, and mounting seats 62 are rotatably connected to both ends of the diagonal bracing rigid rod 61. The two mounting seats 62 are provided one-to-one with the two adjacent reinforcing sleeves 4, and the mounting seats 62 are detachably connected to the corresponding reinforcing sleeves 4. In this embodiment, the mounting seats 62 are connected to the corresponding reinforcing sleeves 4 by bolts.

[0082] The diagonal bracing assembly 6 establishes rigid support between two adjacent reinforcing sleeves 4 through the setting of diagonal bracing rigid rods 61, thereby improving the stability of the entire connection structure. Specifically, a single diagonal bracing rigid rod 61 can connect two mutually perpendicular reinforcing sleeves 4 to form a spatially stable system, constraining the relative displacement or rotation that may occur at the steel structure frame node, and significantly improving the overall stability of the steel structure frame node and its ability to resist complex loads.

[0083] Reference Figure 1 The connection structure also includes several reinforcing components 7, each corresponding to a fixed post 11. Each reinforcing component 7 includes a reinforcing rod 71, which is parallel to and spaced apart from the corresponding fixed post 11. Fixed seats 72 are fixedly connected to both ends of the reinforcing rod 71. Two fixed seats 72 on the reinforcing rod 71 correspond one-to-one with two reinforcing sleeves 4 on the corresponding fixed post 11, and the fixed seats 72 and the corresponding reinforcing sleeves 4 are detachably connected. In this embodiment, the fixed seats 72 and the corresponding reinforcing sleeves 4 are connected by bolts.

[0084] The reinforcing component 7, through the installation of the reinforcing rod 71, can establish rigid support between the two reinforcing sleeves 4 on the same fixed column 11, thereby improving the stability of the entire connection structure. Specifically, the installation of the reinforcing rod 71 is equivalent to setting stiffening ribs on the outside of the fixed column 11, mainly resisting the tensile and compressive stresses generated by bending moments in the steel structure frame node area, significantly improving the bending stiffness and bearing capacity of the steel structure frame node.

[0085] The implementation principle of this application embodiment is as follows: First, the precast steel component 2 is initially positioned and connected to the connecting column 12 of the connector 1 via the first bolt 31. Then, the reinforcing sleeve 4 is fitted onto the outside of the fixing column 11 and the precast steel component 2, rigidly locked by the second bolt 41, and then filled and bonded with adhesive by injecting fixing glue into the filling cavity 5, forming a strong, encapsulated composite connection, which greatly improves the strength and ductility of the local connection. Then, by installing the diagonal bracing rigid rod 61 and the reinforcing rod 71, several reinforcing sleeves 4 are connected to form a stable spatial stability system, thereby comprehensively improving the stiffness, strength, stability, and durability of the steel structure frame node.

[0086] Since the reinforcing sleeve 4, the diagonal brace assembly 6, and the reinforcing assembly 7 are all detachable, the entire connection structure is modularized. On the one hand, this facilitates the assembly of the steel frame; on the other hand, it allows for the free selection of whether to install the reinforcing sleeve 4, the diagonal brace assembly 6, or the reinforcing assembly 7 according to actual needs, which improves the applicability of the entire connection structure.

[0087] This embodiment also discloses a novel method for connecting modular steel structure frame nodes, including the following steps:

[0088] S1. Component production: Production of precast steel components 2, connectors 1 and reinforcing sleeves 4.

[0089] S2, Preliminary assembly.

[0090] S21. Insert several prefabricated steel components 2 into the corresponding connecting columns 12.

[0091] Specifically, after one end of the precast steel component 2 is inserted into the corresponding connecting column 12, the mounting hole 121 is adjusted to be coaxially connected with the corresponding docking hole 21.

[0092] S22. Connect and fix the precast steel component 2 to the corresponding connecting column 12.

[0093] Specifically, after the mounting hole 121 is connected to the corresponding mating hole 21, the first bolt 31 is inserted into the mounting hole 121 and the corresponding mating hole 21, and the nut on the first bolt 31 is tightened, which realizes the fixed connection between the prefabricated steel component 2 and the corresponding connecting column 12.

[0094] S23. Check the connection stability between the precast steel component 2 and the corresponding connecting column 12.

[0095] Specifically, the main checks are whether the connection between the precast steel component 2 and the corresponding connecting column 12 is loose, and whether the nut on the first bolt 31 is tightened, so as to ensure the stability of the connection between the precast steel component 2 and the corresponding connecting column 12.

[0096] S3, Enhanced assembly.

[0097] S31. The reinforcing sleeve 4 is fitted onto the outside of the precast steel component 2 and the corresponding fixed column 11.

[0098] Specifically, the reinforcing sleeve 4 is installed outside the fixed column 11, with one end of the reinforcing sleeve 4 covering the fixed column 11 and the other end covering the precast steel component 2, thereby ensuring that the first bolt 31 is located inside the glue filling cavity 5.

[0099] S32. Connect and fix the precast steel component 2 and the fixed column 11 to the corresponding reinforcing sleeve 4.

[0100] Specifically, firstly, the reinforcing sleeve 4 is connected to the fixing post 11 and the precast steel component 2 using the second bolt 41; simultaneously, the sealing short tube 43 is inserted between the reinforcing sleeve 4 and the precast steel component 2, and the second bolt 41 is used to secure the sealing short tube 43. Then, fixing glue is injected into the filling cavity 5 through the pre-set glue injection hole on the reinforcing sleeve 4 until the filling cavity 5 is completely filled with fixing glue and no air bubbles are present.

[0101] S33. Check the connection stability between the reinforcing sleeve 4 and the precast steel component 2, and between the reinforcing sleeve 4 and the fixed column 11.

[0102] Specifically, check the tightening torque of all second bolts 41 to ensure that the reinforcing sleeve 4 is not loose; check the solidification of the fixing adhesive in the injection hole to ensure that the adhesive layer is full and without gaps; if necessary, non-destructive testing can be performed to confirm the bonding quality.

[0103] The implementation principle of this application embodiment is as follows: through the above connection method, a stable connection between several prefabricated steel components 2 and connectors 1 is achieved, thereby ensuring the stability of the connection of the steel structure frame node positions.

[0104] Example 2: A novel modular steel frame node connection structure, referring to... Figure 7 and Figure 8 The difference between this embodiment and embodiment 1 is that the reinforcing sleeve 4 is slidably connected to the corresponding fixed post 11 along its own length direction.

[0105] Reference Figure 8 The diagonal rigid rod 61 includes two diagonal rods 611, which are coaxially arranged and rotatably connected at one end to the other diagonal rod 611. The diagonal rods 611 are arranged in a one-to-one correspondence with the mounting base 62, and the ends of the two diagonal rods 611 that are far apart from each other are rotatably connected to the corresponding mounting base 62.

[0106] Reference Figure 7 and Figure 8 Since the reinforcing sleeve 4 is slidably connected to the fixed post 11, the diagonal bracing rigid rod 61 includes two rotatably connected diagonal bracing rods 611, and the two diagonal bracing rods 611 are connected to the two mounting seats 62 in a one-to-one correspondence. This makes the two diagonal bracing rods 611 connected to the two adjacent reinforcing sleeves 4 in a one-to-one correspondence. Therefore, when the diagonal bracing rods 611 are pushed, the two diagonal bracing rods 611 rotate relative to each other, and at this time the two reinforcing sleeves 4 slide synchronously on the corresponding fixed post 11.

[0107] Reference Figure 7 and Figure 8 Based on this, the reinforcing sleeve 4 is pre-installed on the corresponding fixed column 11, and a rigid diagonal brace 611 is installed between two adjacent reinforcing sleeves 4; after the precast steel component 2 is inserted and fixed to the corresponding fixed column 11, the two diagonal braces 611 are pushed to coaxiality, at which point the two precast sleeves 6112 can slide to be sleeved on the outside of the corresponding precast steel component 2, thereby realizing the connection between the precast steel component 2 and the corresponding fixed column 11.

[0108] Therefore, the structural design of the diagonal rigid rod 61 allows the reinforcing sleeve 4 to be pre-installed on the fixed column 11, which reduces the complexity of the assembly connection structure and facilitates the rapid assembly of the steel structure frame nodes, thereby improving the assembly speed of the steel structure frame.

[0109] Reference Figure 7and Figure 9 A rigid connector 63 is provided between the two diagonal braces 611. The rigid connector 63 includes two fixing discs 631, which are arranged one-to-one with the diagonal braces 611. The fixing discs 631 are coaxially sleeved on the corresponding diagonal braces 611, and the fixing discs 631 are fixedly connected to or detachably connected to the corresponding diagonal braces 611. Furthermore, the two fixing discs 631 are arranged coaxially at intervals, and a number of rigid bolts 632 are provided between the two fixing discs 631. The axial direction of the rigid bolts 632 is along the axial direction of the fixing discs 631, and the number of rigid bolts 632 are arranged evenly at intervals along the circumference of the diagonal braces 611. The rigid bolts 632 pass through the two fixing discs 631 along their own axial direction, and the two fixing discs 631 are located between the nuts and bolts of the rigid bolts 632 along the axial direction of the rigid bolts 632.

[0110] The rigid connector 63, through the combined design of two fixed discs 631 and several rigid bolts 632, can lock the two rotatably connected diagonal braces 611 in a coaxial position, thereby transforming the rotatable connection of the two diagonal braces 611 into a rigid connection, thus giving the diagonal brace rigid rod 61 stiffness constraint, which can resist node deformation.

[0111] In this embodiment, refer to Figure 9 The fixed plate 631 and the corresponding diagonal brace 611 are connected by bolts or welding.

[0112] Reference Figure 9 and Figure 10 A rigid tube 633 is provided between the two fixed plates 631. The rigid tube 633 is coaxially arranged with the diagonal brace 611. The rigid tube 633 is located between the two fixed plates 631 along its own axial direction, and both ends of the rigid tube 633 are detachably connected to the corresponding fixed plates 631. Both diagonal braces 611 are coaxially inserted into the rigid tube 633, and rigid bolts 632 pass through the rigid tube 633 along their own axial direction.

[0113] The rigid tube 633 is wrapped around the outside of the diagonal brace 611, and both ends of the rigid tube 633 abut against the corresponding fixed plate 631. This allows the rigid tube 633 to provide a larger support area and a more stable connection base for the fixed plate 631, ensuring the rigid connection strength between the two diagonal braces 611. In addition, the rigid tube 633 can also protect the diagonal brace 611.

[0114] In this embodiment, refer to Figure 9 and Figure 10 The rigid tube 633 includes two half-tubes 6331, which are coaxially arranged and detachably connected. A through hole 6332 is formed between the two half-tubes 6331, and two diagonal bracing rods 611 are inserted into the through hole 6332. In this embodiment, the two half-tubes 6331 are connected by bolts.

[0115] Reference Figure 9 and Figure 10 A plurality of clearance holes 6333 are provided at one end of the half-tube 6331, and the clearance holes 6333 penetrate the half-tube 6331 axially. The clearance holes 6333 are provided in a one-to-one correspondence with the rigid bolts 632, and the rigid bolts 632 are coaxially inserted into the corresponding clearance holes 6333.

[0116] The rigid tube 633 adopts a split design of two half tubes 6331, which makes the rigid tube 633 detachable, thereby greatly improving the operability of on-site installation.

[0117] The implementation principle of this application embodiment is as follows: all reinforcing sleeves 4 are pre-installed on the corresponding fixed columns 11, and diagonal rigid rods 61 are installed between two adjacent reinforcing sleeves 4.

[0118] When several prefabricated steel components 2 are connected to the connector 1, the prefabricated steel components 2 are inserted into the corresponding connecting columns 12 and locked by the first bolt 31. At this time, all the diagonal bracing rigid rods 61 are pushed, so that the two diagonal bracing rods 611 inside the diagonal bracing rigid rod 61 rotate to a coaxial state. At this time, two adjacent reinforcing sleeves 4 are slidably fitted onto the corresponding prefabricated steel components 2. Based on the linkage structure composed of several diagonal bracing rigid rods 61 and several reinforcing sleeves 4, all reinforcing sleeves 4 are slidably fitted onto the corresponding prefabricated steel components 2, which realizes the rapid assembly and positioning of the connection structure.

[0119] After this, a rigid connector 63 is installed between the two diagonal braces 611 of the rotatable connection. At this time, the diagonal brace rigid rod 61 has stiffness constraint, which can ensure the stability of the connection structure and resist node deformation.

[0120] Example 3: A novel modular steel frame node connection structure, referring to... Figure 11 and Figure 12 The difference between this embodiment and embodiment 2 is that the diagonal brace 611 includes a movable rod 6111, a sleeve 6112, and a shock-absorbing spring 6113. The sleeve 6112 is coaxially sleeved on the outside of the movable rod 6111, and the sleeve 6112 is slidably connected to the movable rod 6111 along its own axial direction. The shock-absorbing spring 6113 is coaxially sleeved on the outside of the movable rod 6111, and one end of the shock-absorbing spring 6113 is connected to the sleeve 6112, and the other end is connected to the movable rod 6111.

[0121] Based on the structural design of the diagonal brace 611, the diagonal brace 611 is transformed into a damper with a buffer function. Its working principle is as follows: when the node is subjected to dynamic load, the relative movement between adjacent reinforcing sleeves 4 will cause the movable rod 6111 to slide within the sleeve 6112, thereby compressing or stretching the damping spring 6113. The deformation of the damping spring 6113 absorbs and dissipates part of the vibration energy, effectively reducing the vibration amplitude and improving the seismic performance of the steel structure frame node.

[0122] In this embodiment, refer to Figure 8 and Figure 11 The end of the movable rod 6111 away from the sleeve 6112 is rotatably connected to the corresponding mounting base 62, and the end of the sleeve 6112 away from the movable rod 6111 is rotatably connected to the end of the sleeve 6112 on the adjacent diagonal brace 611.

[0123] Reference Figure 9 and Figure 11 The diagonal brace 611 is also provided with a rigid support member 64. One end of the rigid support member 64 is detachably connected to the movable rod 6111, and the other end is detachably connected to the sleeve 6112. In this embodiment, the rigid support member 64 and the rigid connector 63 have the same structure.

[0124] Specifically, refer to Figure 11 and Figure 12 In the rigid support member 64, two fixed discs 631 are respectively sleeved on the movable rod 6111 and the sleeve 6112, and the shock-absorbing spring 6113 is located between the two fixed discs 631; and the rigid tube 633 is sleeved on the outside of the shock-absorbing spring 6113.

[0125] Based on the design of the rigid support member 64, when vibration damping is required, the rigid support member 64 is not installed, and the diagonal brace 611 has the vibration damping function. When vibration damping is not required but additional support force is needed, the rigid support member 64 is installed, bridging the movable rod 6111 and the sleeve 6112, locking the relative sliding between the movable rod 6111 and the sleeve 6112. At this time, the diagonal brace 611 returns to the function of an ordinary rigid member, providing pure rigid support force and restricting nodal displacement.

[0126] The implementation principle of this application embodiment is as follows: the structural design of the diagonal brace 611 has the function of a damper. When the steel structure frame encounters vibration, the vibration reduction of the diagonal brace 611 can significantly reduce the nodal vibration response and improve the seismic resistance and fatigue resistance of the structure.

[0127] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A modular steel structural frame joint connection structure, characterized by, The utility model relates to a prefabricated steel structure, which comprises the following parts: a connecting piece (1) comprising a plurality of fixed columns (11), the plurality of fixed columns (11) being fixedly connected in the middle, coaxial connecting columns (12) being arranged at both ends of the fixed columns (11), and the plurality of connecting columns (12) being arranged in a circle; a plurality of prefabricated steel members (2) corresponding to the connecting columns (12), one end of the prefabricated steel member (2) being coaxially matched with the corresponding connecting column (12), and a fastener (3) being arranged between the prefabricated steel member (2) and the corresponding connecting column (12) to fix the prefabricated steel member (2) and the corresponding connecting column (12); a plurality of reinforcing sleeve pipes (4) corresponding to the prefabricated steel members (2), one end of the reinforcing sleeve pipe (4) being sleeved on the corresponding prefabricated steel member (2), and the other end of the reinforcing sleeve pipe (4) being sleeved on the corresponding fixed column (11), the fixed column (11) and the prefabricated steel member (2) being detachably connected with the reinforcing sleeve pipe (4); the fixed column (11) is slidably connected with the reinforcing sleeve pipe (4) along the length direction of the fixed column (11); an inclined bracing rigid rod (61) is arranged between adjacent two reinforcing sleeve pipes (4), the inclined bracing rigid rod (61) comprising two inclined bracing rods (611), the two inclined bracing rods (611) being coaxially arranged, one end of the inclined bracing rod (611) being rotatably connected with one end of the other inclined bracing rod (611), the two inclined bracing rods (611) being correspondingly arranged with the adjacent two reinforcing sleeve pipes (4), and the ends of the two inclined bracing rods (611) away from each other being rotatably connected with the corresponding reinforcing sleeve pipes (4); a rigid connecting piece (63) is arranged on the inclined bracing rigid rod (61), and the two inclined bracing rods (611) are detachably connected with the rigid connecting piece (63); an inner side wall of the reinforcing sleeve pipe (4) and an outer side wall of the corresponding prefabricated steel member (2) are spaced apart to form a glue filling cavity (5), and the glue filling cavity (5) is filled with fixing glue.

2. The modular steel structural frame joint connection structure according to claim 1, wherein, the fastener (3) comprises a plurality of first bolts (31), the first bolts (31) penetrating the corresponding prefabricated steel member (2) and the corresponding connecting column (12); the plurality of first bolts (31) are located in the corresponding reinforcing sleeve pipe (4).

3. The modular steel structural frame joint connection structure of claim 1, wherein, an outer side of the prefabricated steel member (2) is sleeved with a sealing short pipe (43), the reinforcing sleeve pipe (4) is sleeved outside the corresponding sealing short pipe (43), and the sealing short pipe (43) seals the glue filling cavity (5).

4. The modular steel structural frame joint connection structure of claim 1, wherein, The diagonal brace (611) comprises a movable rod (6111), a sleeve (6112) coaxially sleeved outside the movable rod (6111), the movable rod (6111) being in sliding connection with the sleeve (6112) along the axial direction of the movable rod (6111), and a damping spring (6113) coaxially sleeved outside the movable rod (6111) and connected at one end with the sleeve (6112) and at the other end with the movable rod (6111); The movable rod (6111) is connected at one end away from the sleeve (6112) along the axial direction of the movable rod (6111) with the corresponding reinforcing sleeve (4), and the sleeve (6112) is rotationally connected at one end away from the movable rod (6111) along the axial direction of the sleeve (6112) with the sleeve (6112) of the adjacent diagonal brace (611).

5. The modular steel structural frame joint connection of claim 4, wherein, The diagonal brace (611) further comprises a rigid support (64) detachably connected at one end with the movable rod (6111) and at the other end with the sleeve (6112).

6. The modular steel structural frame joint connection of claim 1, wherein, A plurality of reinforcing rods (71) are provided in one-to-one correspondence with the fixed columns (11), the reinforcing rods (71) are arranged in parallel and spaced apart from the corresponding fixed columns (11), the reinforcing rods (71) are located between the two reinforcing sleeves (4) on the corresponding fixed columns (11) along the length direction of the reinforcing rods (71), and the reinforcing rods (71) are detachably connected at both ends with the corresponding reinforcing sleeves (4).

7. A method for connecting a modular steel structure frame node, using the modular steel structure frame node connecting structure according to any one of claims 1-6, characterized in that, The method comprises the following steps: S1, production of parts: production of prefabricated steel members (2), connecting pieces (1) and reinforcing sleeves (4); S2, preliminary assembly; S21, inserting a plurality of prefabricated steel members (2) into the corresponding connecting columns (12); S22, connecting and fixing the prefabricated steel members (2) with the corresponding connecting columns (12); S23, checking the connection stability of the prefabricated steel members (2) and the corresponding connecting columns (12); S3, reinforcing assembly; S31, sleeving the reinforcing sleeves (4) outside the prefabricated steel members (2) and the corresponding fixed columns (11); S32, connecting and fixing the prefabricated steel members (2) and the fixed columns (11) with the corresponding reinforcing sleeves (4); S33, checking the connection stability between the reinforcing sleeves (4) and the prefabricated steel members (2) and between the reinforcing sleeves (4) and the fixed columns (11).

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