Detachable node structure of modular structure column and construction method of detachable node structure

Abstract

The invention discloses a detachable joint structure of a modular structure column and a construction method of the detachable joint structure. The detachable joint structure comprises an upper modular column, a lower modular column and a hinge assembly. A lower convex block is arranged at the lower part of one opposite side of the upper module column and close to the bottom surface; a lower groove is formed in the lower part, close to the bottom surface, of the other opposite side of the upper module column; an upper convex block is arranged at the upper part of one opposite side of the lower module column and close to the top surface; an upper groove is formed in the lower part, close to the top surface, of the other opposite side of the lower module column; the hinge assembly is hooped at the joint of the upper module column and the lower module column; strip-shaped holes are formed in the positions, corresponding to the upper protruding block and the lower protruding block, of the plate face of the hinge plate, and the upper protruding block and the lower protruding block are inserted into the strip-shaped holes. The hanging end of the head end of the hinge assembly is hung in the first hanging groove of the tail end, and the hanging end and the hanging plate are fixed through a connecting bolt. The technical problems that traditional modular structural column connection is low in efficiency, thermal deformation is generated, construction is difficult in a narrow area, and building transformation or reutilization is not facilitated are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of modular buildings, and particularly relates to a detachable joint structure of a modular structural column and a construction method thereof. Background Art

[0002] Modular buildings are highly prefabricated buildings that divide three-dimensional building spaces in the form of modular units to meet the requirements of prefabrication and processing in factories and transportation to the site for assembly. They have the advantages of fast construction speed, environmental friendliness, and saving of manpower and material resources, and are a new type of building form with broad development prospects.

[0003] Since the modular units of modular buildings are all processed in factories and transported to the site for assembly, the connection nodes of modular buildings will have situations of multiple beams and multiple columns, such as "two columns and four beams" for corner columns, "four columns and eight beams" for side columns, and "eight columns and sixteen beams" for middle columns. Most of the existing joint forms require a certain operating space during the connection process, cannot be connected without damaging the surrounding components, and cannot be disassembled later. Traditional modular structural column connections mostly use welding or high-strength bolt group connections, which have the following defects: 1. Welding requires on-site operation, with low efficiency and thermal deformation. 2. Bolt group connections require multi-directional operating space, and it is difficult to construct in narrow areas. 3. The joints are not detachable, which is not conducive to building renovation or reuse. Summary of the Invention

[0004] The purpose of the present invention is to provide a detachable joint structure of a modular structural column and a construction method thereof, and to solve the technical problems that the connection of traditional modular structural columns has low efficiency, generates thermal deformation, is difficult to construct in narrow areas, and is not conducive to building renovation or reuse.

[0005] To achieve the above object, the present invention adopts the following technical solutions.

[0006] A detachable node structure for a modular structural column, comprising an upper modular column and a lower modular column; further comprising a hinge assembly; a lower groove is provided along the circumferential direction and throughout the length at the bottom of the side surface of the upper modular column; lower bumps are arranged at intervals along the circumferential direction in the lower groove; an upper groove is provided along the circumferential direction and throughout the length at the top of the side surface of the lower modular column; upper bumps are arranged at intervals along the circumferential direction in the upper groove; the upper bumps and the lower bumps are arranged vertically corresponding to each other; the bottom surface of the lower bump is an inclined surface, and the top surface of the upper bump is an inclined surface adapted to the bottom surface of the lower bump, and a rectangular block is formed after the lower bump and the upper bump are joined; an anti-slip pad is arranged at the joint surface between the lower bump and the upper bump; there is a group of hinge plates, and a group of hinge plates are hinged to form a chain-like structure; a hanging end is arranged at the head end of the hinge assembly; a hanging plate is hinged to the end of the hinge assembly; a first hanging groove is arranged on the hanging plate; the hinge assembly is hoop-shaped at the joint of the upper modular column and the lower modular column, corresponding to the upper groove and the lower groove; strip-shaped holes are opened on the plate surface of the hinge plate at the positions corresponding to the upper bump and the lower bump, and the upper bump and the lower bump are inserted into the strip-shaped holes; the hanging end at the head end of the hinge assembly is hung in the first hanging groove at the end, and the hanging end and the hanging plate are fixed by connecting bolts.

[0007] Preferably, the cross-section of the upper modular column is rectangular or circular; the cross-section of the lower modular column is adapted to the cross-section of the upper modular column, being rectangular or circular.

[0008] Preferably, when the cross-sections of the upper modular column and the lower modular column are rectangular, there are four hinge plates, and the length of each hinge plate is adapted to the bottom side length of the upper modular column or the cross-section side length of the lower modular column; when the cross-sections of the upper modular column and the lower modular column are circular, there are at least four hinge plates.

[0009] Preferably, the hinge assembly further comprises a rotating shaft; adjacent hinge plates are connected by the rotating shaft; an insertion plate is arranged on the hinge plate on one side of the joint; a slot is arranged on the hinge plate on the other side of the joint; vertical channels are correspondingly opened on the upper and lower walls of the insertion plate and the slot; the rotating shaft is inserted into the vertical channels to hinge-connect the hinge plates on both sides of the joint.

[0010] Preferably, a second hanging groove is provided on the front side of the bottom edge of the strip-shaped opening of the outermost front hinge plate; a horizontal notch is provided at the front part of the outermost front hinge plate; the horizontal notch communicates with the strip-shaped opening, and the height of the horizontal notch is less than the height of the strip-shaped opening; the hanging end is composed of the side walls at the top and bottom of the horizontal notch, and operation openings are respectively provided in the hanging ends at the top and bottom of the horizontal notch; first through holes are provided at the top of the lower operation opening and at the bottom of the upper operation opening; the first hanging groove is provided at the top and bottom of the hanging plate, and the hanging end is correspondingly embedded in the first hanging groove, and a second through hole is provided at the position corresponding to the first through hole between the upper and lower first hanging grooves; a connecting bolt is inserted through the first through hole and the second through hole.

[0011] Preferably, the vertical section of the lower convex block is a right triangle or a right trapezoid; the vertical section of the upper convex block is adapted to the vertical section of the lower convex block and is a right triangle or a right trapezoid.

[0012] Preferably, an intelligent damping core layer is provided at the connection position between the upper module column and the lower module column; the intelligent damping core layer includes a magnetorheological elastomer layer and a closed-loop control system; the magnetorheological elastomer layer is arranged circumferentially around the joint of the upper module column and the lower module column; the magnetorheological elastomer layer is composed of an elastic substrate and carbonyl iron powder; honeycomb holes are provided on the elastic substrate; an acceleration sensor is embedded in the honeycomb hole wall of the magnetorheological elastomer layer; the closed-loop control system includes an inner layer coil, an outer layer coil and an edge computing module; the inner layer coil is wound on the outer surface of the magnetorheological elastomer layer; the outer shell circumferentially covers the outside of the hinge assembly; the outer layer coil is arranged in the cavity of the outer shell and is arranged circumferentially along the inner surface of the outer shell; the edge computing module is installed in the top chamber of the outer shell to adjust the magnetic field strength in real time.

[0013] Preferably, the outer shell includes an inner wall and an outer wall; the distance between the inner wall and the outer wall is not less than 15 mm, and the inner wall and the outer wall enclose a cavity; heat dissipation fins and pipeline channels are also arranged in the cavity of the outer shell.

[0014] A construction method for a detachable node structure of a modular structural column includes the following steps.

[0015] Step 1, prefabrication of the upper module column and the lower module column: Process lower convex blocks and lower grooves on both sides of the bottom surface of the upper module column, and correspondingly process upper convex blocks and upper grooves on both sides of the top surface of the lower module column.

[0016] Step 2, hoisting and positioning of the upper module column and the lower module column: Hoist the upper module column directly above the lower module column to make their axes coincide.

[0017] Step 3, assembly of the hinge assembly.

[0018] Step 4: Hoop the hinge assembly around the joint of the upper module column and the lower module column, and connect and fix it.

[0019] Compared with the prior art, the present invention has the following characteristics and beneficial effects.

[0020] 1. Through the cooperation of the hinged chain leaf plates and the hanging ends / slots of the present invention, the four-sided hoop can be completed with a single-sided operation at the node, without the need for multi-angle construction, and the installation time is shortened to 20% of that of traditional welded joints. At the same time, in the present invention, the bumps and grooves of the upper and lower module columns are designed to be vertically corresponding, combined with the insertion of the strip-shaped holes of the leaf plates, to form a self-calibrating alignment system, reducing the difficulty of manual adjustment.

[0021] 2. The anti-slip pad and the right-angled triangular bumps in the present invention: After the bumps are assembled, they form a rectangular block, combined with the anti-slip pad (friction coefficient ≥ 0.6), to ensure the anti-slip ability of the node, and there is no structural damage after disassembly and assembly, supporting repeated use; the leaf plates can be adapted to module columns with rectangular (four evenly distributed) or circular (more than four arc-shaped plates) cross-sections. Through the flexible combination of the hinge connection of the rotating shaft and the insertion plate / slot, more than 90% of the standardized column types can be covered by the same node structure.

[0022] 3. The magnetorheological elastomer layer and the closed-loop control system in the present invention are built into the node, without the need for additional dampers, effectively reducing the space occupation. The bumps, grooves and hinge assembly of the module column can be processed with high precision in the factory, and the laser cutting tolerance is ±0.2 mm. Only hoisting and bolt tightening are required on site, greatly shortening the construction period; and the leaf plate is locked with the hanging slot by bolts (M16 high-strength bolts), avoiding welding thermal deformation, and is suitable for flammable, explosive or clean environments.

[0023] 4. The magnetorheological elastomer layer in the present invention is composed of silicone rubber and carbonyl iron powder, and an acceleration sensor is embedded in the honeycomb holes to monitor the vibration signal in real time; the edge computing module dynamically adjusts the magnetic field intensity of the inner / outer coils according to the sensor data, so that the node stiffness can be adaptively adjusted within 0.1 second, effectively improving the seismic energy dissipation rate and meeting the requirements of rare earthquakes of intensity 8. The distance between the inner wall and the outer wall of the shell is ≥ 15 mm, and heat dissipation fins and pipeline channels are arranged in the cavity to achieve an IP68 protection level. The inner wall of the shell is coated with iron-silicon-aluminum magnetic powder epoxy resin to optimize the magnetic circuit closing efficiency and reduce energy consumption.

[0024] 5. The present invention provides a connection node structure for modular structural columns, which solves the deficiencies of traditional connection methods and has the advantages of simple construction, no need for welding, and strong on-site adaptability. It is especially suitable for the rapid installation and disassembly of columns in modular buildings. Through this node structure, a more efficient and flexible construction process can be achieved on the basis of ensuring structural safety. Description of the Drawings

[0025] The following further describes the present invention in detail with reference to the drawings.

[0026] Figure 1 It is a schematic structural diagram of a hinge assembly arranged on the outer sides of the upper module column and the lower module column of the present invention.

[0027] Figure 2 It is a schematic structural diagram of the hinge assembly in the present invention.

[0028] Figure 3 It is a schematic structural diagram of the hinge plate in the present invention.

[0029] Figure 4 It is a schematic structural diagram of the foremost hinge plate in the present invention.

[0030] Figure 5 It is a schematic cross-sectional structural diagram of the magnetorheological elastomer layer in the present invention.

[0031] Figure 6 It is a schematic structural diagram of the upper convex block and the upper groove arranged on the lower module column of the present invention.

[0032] Figure 7 It is a schematic horizontal sectional structural diagram of the intelligent damping core layer arranged on the upper module column of the present invention.

[0033] Figure 8 It is a schematic horizontal sectional structural diagram of the outer shell in the present invention.

[0034] Figure 9 It is a schematic structural diagram of the lower convex block and the lower groove arranged on the upper module column of the present invention.

[0035] Figure 10 It is a schematic structural diagram when the side wall of the strip-shaped hole in the hinge assembly of the present invention is an inclined surface.

[0036] Figure 11 It is a schematic horizontal sectional structural diagram of the joint seam after the upper module column and the lower module column of the present invention are butted.

[0037] Reference numerals: 1 - upper module column, 2 - lower module column, 3 - hinge assembly, 3.1 - hinge plate, 3.2 - rotating shaft, 4 - lower convex block, 5 - upper convex block, 6 - lower groove, 7 - upper groove, 8 - hanging end, 9 - hanging plate, 10 - first hanging groove, 11 - strip-shaped hole, 13 - inserting plate, 14 - inserting slot, 15 - second hanging groove, 16 - horizontal notch, 17 - operation port, 18 - first through hole, 19 - second through hole, 20 - connecting bolt, 21 - anti-slip pad, 22 - intelligent damping core layer, 22.1 - magnetorheological elastomer layer, 22.2 - inner layer coil, 22.3 - outer layer coil, 22.4 - edge computing module, 22.5 - outer shell, 22.5.1 - inner wall, 22.5.2 - outer wall, 23 - acceleration sensor. Detailed implementation manners

[0038] As Figures 1-9 shown, this detachable node structure of the modular structural column includes an upper modular column 1 and a lower modular column 2; it also includes a hinge assembly 3; a lower groove 6 is provided along the circumferential direction and throughout the length at the bottom of the side surface of the upper modular column 1; lower protrusions 4 are arranged at intervals along the circumferential direction in the lower groove 6; an upper groove 7 is provided along the circumferential direction and throughout the length at the top of the side surface of the lower modular column 2; upper protrusions 5 are arranged at intervals along the circumferential direction in the upper groove 7; the upper protrusions 5 and the lower protrusions 4 are arranged vertically corresponding to each other; the bottom surface of the lower protrusion 4 is an inclined surface, and the top surface of the upper protrusion 5 is an inclined surface adapted to the bottom surface of the lower protrusion 4, and after the lower protrusion 4 and the upper protrusion 5 are joined together, a rectangular block is formed; an anti-slip pad 21 is arranged at the splicing surface of the lower protrusion 4 and the upper protrusion 5; the hinge assembly 3 includes hinge plates 3.1; there is a group of hinge plates 3.1, and a group of hinge plates 3.1 are hinged to each other to form a chain-like structure; a hanging end 8 is arranged at the head end of the hinge assembly 3; a hanging plate 9 is hinged and connected to the end part of the hinge assembly 3; a first hanging groove 10 is arranged on the hanging plate 9; the hinge assembly 3 is hoop-mounted at the joint of the upper modular column 1 and the lower modular column 2, corresponding to the upper groove 7 and the lower groove 6; strip-shaped openings 11 are provided on the plate surface of the hinge plate 3.1 at the positions corresponding to the upper protrusions 5 and the lower protrusions 4, and the upper protrusions 5 and the lower protrusions 4 are inserted into the strip-shaped openings 11; the hanging end 8 at the head end of the hinge assembly 3 is hung in the first hanging groove 10 at the end, and the hanging end 8 and the hanging plate 9 are fixed by a connecting bolt 20.

[0039] In this embodiment, the cross-section of the upper modular column 1 is rectangular or circular; the cross-section of the lower modular column 2 is adapted to the cross-section of the upper modular column 1 and is rectangular or circular. When the cross-sections of both the upper modular column 1 and the lower modular column 2 are rectangular, four upper protrusions 5 are provided, and the four upper protrusions 5 are respectively located on the four side surfaces of the lower modular column 2; four lower protrusions 4 are provided, and the four lower protrusions 4 are respectively located on the four side surfaces of the lower modular column 2; when the cross-sections of both the upper modular column 1 and the lower modular column 2 are circular, three, four or five upper protrusions 5 are provided, and multiple upper protrusions 5 are arranged at equal intervals along the circumferential direction in the upper groove 7 of the lower modular column 2.

[0040] In this embodiment, when the cross-sections of the upper modular column 1 and the lower modular column 2 are rectangular, there are four hinge plates 3.1, and the length of each hinge plate 3.1 is adapted to the bottom side length of the upper modular column 1 or the cross-section side length of the lower modular column 2; when the cross-sections of the upper modular column 1 and the lower modular column 2 are circular, there are at least four hinge plates 3.1.

[0041] In this embodiment, the hinge assembly 3 further includes a rotating shaft 3.2; adjacent hinge plates 3.1 are connected by the rotating shaft 3.2; a plug board 13 is arranged on the hinge plate 3.1 on one side of the joint; a slot 14 is arranged on the hinge plate 3.1 on the other side of the joint; vertical channels are correspondingly formed on the upper and lower walls of the plug board 13 and the slot 14; the rotating shaft 3.2 is inserted into the vertical channels to hinge-connect the hinge plates 3.1 on both sides of the joint.

[0042] In this embodiment, a second hanging groove 15 is formed in the front side of the bottom edge of the strip-shaped hole 11 of the foremost hinge plate 3.1; a horizontal notch 16 is arranged in the front part of the foremost hinge plate 3.1; the horizontal notch 16 communicates with the strip-shaped hole 11, and the height of the horizontal notch 16 is less than the height of the strip-shaped hole 11; the hanging end 8 is composed of the side walls at the top and bottom of the horizontal notch 16, and operation ports 17 are respectively arranged in the hanging ends 8 at the top and bottom of the horizontal notch 16; first through holes 18 are arranged at the top of the lower operation port 17 and at the bottom of the upper operation port 17; the first hanging grooves 10 are arranged at the top and bottom of the hanging board 9, and the hanging end 8 is correspondingly embedded in the first hanging grooves 10, and a second through hole 19 is arranged at the position corresponding to the first through hole 18 at the part between the upper and lower first hanging grooves 10; a connecting bolt 20 is inserted through the first through hole 18 and the second through hole 19; the height of the upper operation port 17 is not less than the length of the connecting bolt 20. During construction, the connecting bolt 20 enters from the operation port 17 and is inserted into the first through hole 18 and the second through hole 19.

[0043] In this embodiment, the vertical section of the lower convex block 4 is a right triangle or a right trapezoid; the vertical section of the upper convex block 5 is adapted to the vertical section of the lower convex block 4, and is a right triangle or a right trapezoid. The lower convex block and the upper convex block are combined into a rectangular block; specifically, the peripheral side surfaces of the rectangular block can be flat or sloped.

[0044] When the peripheral side surfaces of the rectangular block are sloped, the side length of the vertical section of the rectangular block gradually decreases from the outside to the inside; the shape of the strip-shaped hole 11 is adapted to the shape of the rectangular block, and the peripheral side walls of the strip-shaped hole 11 are inclined surfaces adapted to the peripheral side surfaces of the rectangular block.

[0045] In this embodiment, both the upper module column 1 and the lower module column 2 are made of square steel pipes with the material Q355 and a wall thickness of 10 mm; At the connection position of the upper module column 1 and the lower module column 2, there is an intelligent damping core layer 22 with a thickness of 10 mm; the intelligent damping core layer 22 includes a magnetorheological elastomer layer 22.1 and a closed-loop control system; the magnetorheological elastomer layer 22.1 is arranged circumferentially around the seam of the upper module column 1 and the lower module column 2; the magnetorheological elastomer layer 22.1 is composed of an elastic substrate and carbonyl iron powder; the particle size of the carbonyl iron powder is 5 μm; honeycomb holes with a pore diameter of 3 mm are arranged on the elastic substrate; an acceleration sensor 23 is embedded in the honeycomb hole wall of the magnetorheological elastomer layer 22.1; the closed-loop control system includes an inner layer coil 22.2, an outer layer coil 22.3 and an edge computing module 22.4; the inner layer coil 22.2 is wound on the outer surface of the magnetorheological elastomer layer 22.1; the outer shell 22.5 circumferentially covers the outside of the hinge assembly 3; a 0.5 mm expansion joint is reserved between the outer shell 22.5 and the hinge plate 3.1; a fluororubber sealing strip is used at the expansion joint between the outer shell and the hinge plate 3.1, and the water tightness reaches IP68 level; the outer layer coil 22.3 is arranged in the cavity of the outer shell 22.5 and is arranged circumferentially along the inner surface of the outer shell 22.5; the magnetorheological elastomer layer 22.1 covers 150 mm on each side of the seam, and the width of the magnetorheological elastomer layer 22.1 is 2×150 mm of the seam, rather than only wrapping the seam line. The wire diameter of the inner layer coil 22.2 is Φ0.5 mm (100 turns / layer), and the outer layer coil 22.3 is a flexible PCB etching (150 turns / layer); the acceleration sensor 23 uses a MEMS triaxial acceleration sensor with a range of ±5000 με and a sampling rate of 1 kHz; the edge computing module 22.4 is installed in the top chamber of the outer shell to adjust the magnetic field intensity in real time.

[0046] In this embodiment, the outer shell 22.5 includes an inner wall 22.5.1 and an outer wall 22.5.2; the distance between the inner wall 22.5.1 and the outer wall 22.5.2 is not less than 15 mm, and the inner wall 22.5.1 and the outer wall 22.5.2 enclose a cavity; heat dissipation fins and pipeline channels are also arranged in the cavity of the outer shell 22.5.

[0047] In this embodiment, the inner coil 22.2 is responsible for the magnetic field in the core area of the magnetorheological layer, contributing 75% of the intensity, and the outer coil 22.3 compensates for the edge magnetic field; Heat dissipation efficiency: The heat dissipation fins in the sandwich cavity between the inner wall 22.5.1 and the outer wall 22.5.2 reduce the coil temperature rise to ΔT ≤ 25°C. The magnetorheological elastomer layer 22.1, without cavity cooling, relies on the heat conduction of the node housing; Vibration transmission: The magnetorheological elastomer layer 22.1 is mechanically decoupled from the inner wall through the sandwich cavity assembly between the inner wall 22.5.1 and the outer wall 22.5.2, reducing the vibration transmission rate; The outer coil 22.3 is integrated with the radiator in the sandwich cavity to achieve auxiliary magnetic field control and thermal management. The housing 22.5 covers the full height of the node (H = node height + 10 mm), radially exceeding the outer edge of the magnetorheological elastomer layer 22.1 by 15 mm; A threading hole with a diameter of Φ80 mm is opened at the lower end of the housing. The outer wall of the housing 22.5 is made of an anodized aluminum plate with a thickness of 3 mm; A magnetic conductive coating is provided on the inner surface of the housing 22.5. The magnetic conductive coating is composed of iron-silicon-aluminum magnetic powder and epoxy resin, with a thickness of 0.1 mm, optimizing the magnetic circuit closure.

[0048] In other embodiments, the detachable node structure can also be connected to other rod-shaped structures such as connecting beams or support rods, and the upper module column 1 and the lower module column 2 in the structure can be replaced with beam modules or support modules, etc.

[0049] The construction method of this detachable node structure of the modular structural column includes the following steps: Step 1, prefabrication of the upper module column 1 and the lower module column 2: Process lower convex blocks 4 and lower grooves 6 on both sides of the bottom surface of the upper module column, and correspondingly process upper convex blocks 5 and upper grooves 7 on both sides of the top surface of the lower module column 2; The depth of the upper groove 7 and the lower groove 6 is 20 mm.

[0050] Step 2, hoisting and positioning of the upper module column 1 and the lower module column 2: Hoist the upper module column 1 directly above the lower module column 2 so that their axes coincide; Fix it with a temporary support frame, and control the joint gap within 2 mm; Use a laser rangefinder to verify the straightness of the column bodies within 150 mm on both sides of the joint (allowable deviation ±0.5 mm / m).

[0051] Step 3, assembly of the hinge assembly 3: Hinge-connect the hinge plates 3.1 through the rotating shaft 3.2; Step 4, hoop the hinge assembly 3 around the joint of the upper module column 1 and the lower module column 2 and connect and fix it; Surround the hinge assembly around the module column joint, so that the upper convex block 5 and the lower convex block 4 are inserted into the strip-shaped holes 11 of the hinge plate 3.1; The hanging end 8 is embedded in the first hanging slot 10 of the end hanging plate 9, and the connecting bolt 20 is inserted.

[0052] Before constructing the hinge assembly 3 in Step 4, construct the magnetorheological elastomer layer 22.1 and install the inner coil; Forming of the magnetorheological elastomer layer 22.1: Step 1, matrix mixing: the silicone rubber and carbonyl iron powder (35% by mass) are vacuum stirred (-0.1 MPa, 30 minutes) to prepare a mixture; Step 2, mold installation: install the annular mold within 150mm on both sides of the joint, with a gap of 10mm, and inject the mixture; Step 3, vulcanization curing: gradient temperature increase (80°C×2h→120°C×1h), and a continuous annular magnetorheological elastomer layer 22.1 is formed after demoulding.

[0053] Step 4, laser cutting of honeycomb holes and embedding of sensors: laser cutting of honeycomb holes with an aperture of 3 mm, a wall thickness of 0.5 mm, and a hole spacing of 5 mm; embedding the MEMS acceleration sensor in the four-quadrant hole wall and fixing it by gluing, and passing the lead wires through the reserved wire groove of the shell.

[0054] Step 5, axially winding a Φ0.5 mm enameled wire (double layer, 100 turns / layer, layer spacing 1 mm) on the outer surface of the magnetorheological elastomer layer 22.1; After the hinge assembly 3 is constructed in step 4, the outer shell 22.5 is assembled and sealed in step 5; aluminum heat sink fins, outer coil 22.3, and edge computing module 22.4 are installed in the interlayer cavity, the spacing between the heat sink fins is 10 mm, and the sensor cables and power cables are arranged and inserted into the pre-buried pipeline channel of the outer shell.

[0055] Pre-installation of the housing: insert the housing 22.5 into the outside of the hinge assembly 3; fix the upper and lower ends of the housing with M12 high-strength bolts, and control the width of the expansion joint to 0.5±0.1mm.

[0056] Sealing treatment: Press fluororubber sealing strips into the expansion joints, inject glue to seal the joints, and use silicone weather-resistant glue.

[0057] Step six: debugging of the closed-loop control system. This completes the construction.

[0058] Hardware joint debugging: connecting the acceleration sensor, coil and edge computing module (CAN bus communication); Power on to test magnetic field strength (adjustable from 0 to 0.5 T) and verify that coil response time is ≤ 8 ms.

[0059] Software calibration: Input seismic wave simulation signals, such as El-Centro waves, to test the dynamic adjustment of the stiffness of the magnetorheological elastomer layer 22.1; Optimize AI algorithm parameters to reduce acceleration response by ≥60%.

[0060] Acceptance test: Seismic test: simulate a rare earthquake of magnitude 8, and the residual deformation of the node is ≤10mm; Fatigue test: After 50,000 ± 5 mm shear cycles, the damping efficiency retention rate ≥ 90%. The above embodiments are not an exhaustive list of specific embodiments, and there may be other embodiments. The purpose of the above embodiments is to illustrate the present invention, rather than limiting the protection scope of the present invention. All applications derived from simple changes of the present invention fall within the protection scope of the present invention.

Claims

1. A detachable node structure of a modular structural column, comprising an upper modular column (1) and a lower modular column (2); characterized in that: The invention also comprises a hinge assembly (3); a lower groove (6) is provided at the bottom of the side surface of the upper module column (1) along the entire length in the circumferential direction; lower protrusions (4) are provided in the lower groove (6) along the circumferential direction at intervals; an upper groove (7) is provided at the top of the side surface of the lower module column (2) along the entire length in the circumferential direction; upper protrusions (5) are provided in the upper groove (7) along the circumferential direction at intervals; the upper protrusions (5) are arranged vertically corresponding to the lower protrusions (4); the bottom surface of the lower protrusion (4) is an inclined surface, the top surface of the upper protrusion (5) is an inclined surface adapted to the bottom surface of the lower protrusion (4), and the lower protrusion (4) and the upper protrusion (5) are assembled to form a rectangular block; an anti-slip pad (21) is provided at the joint surface between the lower protrusion (4) and the upper protrusion (5); the hinge assembly (3) comprises a hinge plate (3.1); the hinge plate (3.1) has a A group of leaf plates (3.1) are hingedly connected to form a chain structure; a hanging end (8) is provided at the head end of the hinge assembly (3); a hanging plate (9) is hingedly connected to the tail end of the hinge assembly (3); a first hanging groove (10) is provided on the hanging plate (9); the hinge assembly (3) is hooped at the joint between the upper module column (1) and the lower module column (2), corresponding to the upper groove (7) and the lower groove (6); a strip hole (11) is opened on the plate surface of the hinge plate (3.1), corresponding to the position of the upper protrusion (5) and the lower protrusion (4), and the upper protrusion (5) and the lower protrusion (4) are inserted into the strip hole (11); the hanging end (8) at the head end of the hinge assembly (3) is hung in the first hanging groove (10) at the tail end, and the hanging end (8) and the hanging plate (9) are fixed by connecting bolts (20).

2. The detachable node structure of the modular structural column according to claim 1 is characterized in that: The cross-section of the upper module column (1) is rectangular or circular; the cross-section of the lower module column (2) is adapted to the cross-section of the upper module column (1) and is rectangular or circular; When the cross-sections of the upper module column (1) and the lower module column (2) are both rectangular, four upper protrusions (5) are provided, and the four upper protrusions (5) are respectively located on the four side surfaces of the lower module column (2); four lower protrusions (4) are provided, and the four lower protrusions (4) are respectively located on the four side surfaces of the lower module column (2); when the cross-sections of the upper module column (1) and the lower module column (2) are both circular, three, four or five upper protrusions (5) are provided, and the plurality of upper protrusions (5) are equidistantly arranged in the upper groove (7) of the lower module column (2) along the circumferential direction.

3. The detachable node structure of the modular structural column according to claim 1 is characterized in that: When the cross-sections of the upper module column (1) and the lower module column (2) are rectangular, there are four hinge plates (3.1), and the length of each hinge plate (3.1) is adapted to the side length of the bottom surface of the upper module column (1) or the side length of the cross-section of the lower module column (2); when the cross-sections of the upper module column (1) and the lower module column (2) are circular, there are at least four hinge plates (3.1).

4. The detachable node structure of the modular structural column according to claim 1 is characterized in that: The hinge assembly (3) further comprises a rotating shaft (3.2); adjacent hinge plates (3.1) are connected via the rotating shaft (3.2); an insert plate (13) is provided on the hinge plate (3.1) on one side of the joint; a slot (14) is provided on the hinge plate (3.1) on the other side of the joint; vertical channels are correspondingly provided on the upper and lower walls of the insert plate (13) and the slot (14); the rotating shaft (3.2) is inserted into the vertical channel to hinge the hinge plates (3.1) on both sides of the joint.

5. The detachable node structure of the modular structural column according to claim 1 is characterized in that: A second hanging groove (15) is provided at the front side of the bottom edge of the strip hole (11) of the frontmost hinge plate (3.1); a horizontal notch (16) is provided at the front of the frontmost hinge plate (3.1); the horizontal notch (16) is connected to the strip hole (11), and the height of the horizontal notch (16) is less than the height of the strip hole (11); the hanging end (8) is composed of the side walls at the top and bottom of the horizontal notch (16), and operating means are provided in the hanging ends (8) at the top and bottom of the horizontal notch (16), respectively. The first through hole (18) is provided at the top of the lower operation opening (17) and at the bottom of the upper operation opening (17); the first hanging groove (10) is provided at the top and bottom of the hanging plate (9), and the hanging end (8) is correspondingly embedded in the first hanging groove (10); a second through hole (19) is provided at a position between the upper and lower first hanging grooves (10) and corresponding to the position of the first through hole (18); and connecting bolts (20) are passed through the first through hole (18) and the second through hole (19).

6. The detachable node structure of the modular structural column according to claim 1, characterized in that: The vertical section of the lower protrusion (4) is a right triangle or a right trapezoid; the vertical section of the upper protrusion (5) is adapted to the shape of the vertical section of the lower protrusion (4) and is a right triangle or a right trapezoid.

7. The detachable node structure of the modular structural column according to claim 1, characterized in that: An intelligent damping core layer (22) is provided at the connection position between the upper module column (1) and the lower module column (2); the intelligent damping core layer (22) comprises a magnetorheological elastomer layer (22.1) and a closed-loop control system; the magnetorheological elastomer layer (22.1) is arranged in a circumferential direction around the joint between the upper module column (1) and the lower module column (2); the magnetorheological elastomer layer (22.1) is composited with an elastic substrate and carbonyl iron powder; honeycomb holes are provided on the elastic substrate; an acceleration sensor (23) is embedded in the honeycomb hole wall of the magnetorheological elastomer layer (22.1); The closed-loop control system comprises an inner coil (22.2), an outer coil (22.3) and an edge computing module (22.4); the inner coil (22.2) is wound on the outer surface of the magnetorheological elastomer layer (22.1); the outer shell (22.5) covers the outer side of the hinge assembly (3) in an annular direction; the outer coil (22.3) is arranged in the cavity of the outer shell (22.5) and is arranged in an annular direction along the inner surface of the outer shell (22.5); and the edge computing module (22.4) is installed on the top of the cavity of the outer shell (22.5) to adjust the magnetic field strength in real time.

8. The detachable node structure of the modular structural column according to claim 1, characterized in that: The outer shell (22.5) comprises an inner wall (22.5.1) and an outer wall (22.5.2); the distance between the inner wall (22.5.1) and the outer wall (22.5.2) is not less than 15 mm, and the inner wall (22.5.1) and the outer wall (22.5.2) form a cavity; and heat dissipation fins and pipeline channels are also arranged in the cavity of the outer shell (22.5).

9. A construction method for a detachable node structure of a modular structural column according to any one of claims 1 to 8, characterized in that: The steps include: Step 1: prefabricate the upper module column (1) and the lower module column (2): process the lower convex block (4) and the lower groove (6) on both sides of the bottom surface of the upper module column, and process the upper convex block (5) and the upper groove (7) on both sides of the top surface of the lower module column (2); Step 2: hoisting and positioning the upper module column (1) and the lower module column (2): hoisting the upper module column (1) to the top of the lower module column (2) so that the axes of the two coincide with each other; Step 3, assembling the hinge assembly (3); Step 4: The hinge assembly (3) is hooped around the joint between the upper module column (1) and the lower module column (2), and connected and fixed.

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