A steel modular integrated building structure system with plastic controllable nodes

Abstract

The present invention relates to a steel modular integrated building structure system with plastically controllable nodes, comprising modular columns, modular upper beams, modular lower beams, and plastically controllable nodes. The plastically controllable nodes are used to connect the modular columns and the modular lower beams, and the plastically controllable nodes are used to connect the modular columns and the modular upper beams. A steel modular integrated building structure system with plastically controllable nodes employs plastically controllable nodes with buckling-restrained flanges and pin-connected webs. The system is simple in construction and easy to construct. It also achieves controllable structural plasticity, improving the ductility and seismic energy dissipation capacity of the structural system. The resulting system can reduce the adverse effects of earthquakes in high-intensity areas on modular buildings, reduce the cross-sectional dimensions of the structure, increase the usable area of ​​the building, and reduce the cost of use.

Description

Technical Field

[0001] The invention relates to a modular integrated building structure system with plastic controllable nodes, belonging to the technical fields of prefabricated buildings, modular buildings and structural shock absorption. Background Art

[0002] Buildings assembled on site from prefabricated parts and components are called prefabricated buildings. They have the advantages of a short construction period and low environmental impact. Among them, modular integrated construction (MiC) is the prefabricated building with the highest assembly rate and the highest degree of industrialization. However, the current modular buildings in China have the defects of poor overall performance and low seismic performance, and the structure is required to meet seismic requirements such as "strong columns and weak beams", "strong nodes and weak components", and "strong shear and weak bending" during seismic design to ensure the ductility of the structure. In order to meet the seismic requirements, especially in high-intensity areas, the existing technology often adopts the method of increasing the structural cross-section to resist earthquake effects, but this seismic measure will lead to an increase in the amount of structural materials used, compress the building area, make the construction more difficult and increase the construction cost. How to design a modular structural system with plastic controllable nodes, improve the structural ductility and energy consumption capacity, and reduce the adverse effects of earthquake effects on modules is the problem to be solved by the present invention. Summary of the Invention

[0003] (1) Technical issues to be solved

[0004] In order to solve the above problems in the prior art, the present invention provides a steel modular integrated building structure system with plastic controllable nodes.

[0005] (2) Technical solution

[0006] In order to achieve the above objectives, the main technical solutions adopted by the present invention include:

[0007] A steel modular integrated building structure system with plastic controllable nodes comprises module columns, module upper beams, module lower beams and plastic controllable nodes, wherein the plastic controllable nodes are used to connect the module columns and the module lower beams, and the plastic controllable nodes are used to connect the module columns and the module upper beams.

[0008] In the steel modular integrated building structure system as described above, preferably, the module columns are steel box columns, and the module lower beams and module upper beams are both steel beams, specifically box-shaped or I-shaped.

[0009] As described above, the steel modular integrated building structure system preferably comprises each of the plastic controllable nodes including a buckling constraint plate, a connecting beam end, a connecting pin and a connecting bolt. Two buckling constraint plates are provided and are symmetrically arranged. Two connecting beam ends are provided and are respectively fixed on the module column and the module lower beam or the module upper beam. The buckling constraint plate is fixedly connected to the connecting beam end by a connecting bolt. The two buckling constraint plates are arranged in parallel, and the connecting pin is fixedly connected to the two adjacent connecting beam ends.

[0010] As described above, in the steel modular integrated building structure system, preferably, the buckling constraint plate includes a low yield point plate, a rubber protective layer and a constraint sleeve, wherein the low yield point plate is a steel plate that is small in the middle and large on both sides and is easy to yield and enter plasticity, and a through hole is provided on the low yield point plate. The constraint sleeve is sleeved in the middle of the low yield point plate, and the rubber protective layer is provided between the low yield point plate and the constraint sleeve.

[0011] As described above, the steel modular integrated building structure system preferably comprises two wing plates, two webs and an end plate, the two wing plates are fixedly connected to the two webs to form a structure compatible with the module column, the module lower beam or the module upper beam, the end plate is fixedly arranged at one end formed by the two wing plates and the two webs, and the other end is fixedly connected to the module column, the module lower beam or the module upper beam; the wing plates are provided with wing plate through holes, and the wing plate through holes are fixedly connected to the through holes on the low yield point plate by connecting bolts and nuts.

[0012] As described above, in the steel modular integrated building structure system, preferably, the connecting pin includes a connecting ear plate and a pin. The connecting ear plate is fixedly arranged on the end plate of each connecting beam end. The connecting ear plate is provided with a pin hole, and when used for connection, the pin is passed through two adjacent connecting ear plates to achieve a fixed connection.

[0013] As described above, in the steel modular integrated building structure system, preferably, one end of the buckling restraint plate is fixed to the connecting beam end of the module column by connecting bolts and nuts, and the other end is fixed to the connecting beam end of the module lower beam or the module upper beam by connecting bolts and nuts.

[0014] (3) Beneficial effects

[0015] The beneficial effects of the present invention are:

[0016] The present invention provides a steel modular integrated building structure system with plastically controllable nodes. The system adopts plastically controllable nodes with buckling-restrained flange plates and webs connected by pins. The system has a simple structure and is easy to construct. The system realizes controllable structural plasticity, improves the ductility and seismic energy dissipation capacity of the structural system, and can reduce the adverse effects of earthquakes in high-intensity areas on modular buildings, reduce the size of the structural cross-section, increase the building's usable area, and reduce the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of stacking of a steel modular integrated building structure system with plastic controllable nodes according to the present invention;

[0018] Figure 2 It is a structural diagram of the plastic controllable node;

[0019] Figure 3 is the top view of the buckling-restrained plate;

[0020] Figure 4 is the side view of the buckling-restrained plate;

[0021] Figure 5 is the front view of the buckling restrained plate;

[0022] Figure 6 It is the front view of the connecting beam end;

[0023] Figure 7 is a front view of the connecting pin;

[0024] Figure 8 A top view of the connecting pin.

[0025] [Description of Reference Numerals]

[0026] 1: module column;

[0027] 2: Module lower beam;

[0028] 3: Module upper beam;

[0029] 4: Buckling restrained plate;

[0030] 5: Buckling restrained plate;

[0031] 6: Connect the beam ends;

[0032] 7: Connecting pin;

[0033] 8: Connecting bolts

[0034] 9: Low yield point plate;

[0035] 10: Rubber protective layer;

[0036] 11: Constraint sleeve;

[0037] 12: through hole;

[0038] 13: Wing plate;

[0039] 14: belly plate;

[0040] 15: end plate;

[0041] 16: Connecting ear plate;

[0042] 17: pin hole;

[0043] 18: Pin. DETAILED DESCRIPTION

[0044] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0045] Example 1

[0046] A steel modular integrated building structure system with plastic controllable nodes, such as Figure 1 As shown, it includes a modular column 1, a modular lower beam 2, a modular upper beam 3, and plastically controllable nodes 4 for connecting them. The modular column 1 is a steel box column, the modular lower beam 2 is a steel beam, and the modular upper beam 3 is also a steel beam. The steel beams of the modular lower beam 2 and modular upper beam 3 can be box-shaped or I-shaped. The plastically controllable nodes 4 are used to connect the modular column 1 and the modular lower beam 2, and the plastically controllable nodes 4 are used to connect the modular column 1 and the modular upper beam 3.

[0047] There may be two or more module lower beams 2 and module upper beams 3 . The module lower beams 2 and module upper beams 3 may be arranged adjacent to each other in parallel or separately and spaced apart.

[0048] There are multiple plastic controllable nodes 4, such as Figure 2 As shown, each plastically controllable node 4 is composed of two buckling restraint plates 5, two connecting beam ends 6, connecting pins 7, and multiple connecting bolts 8. The connecting beam ends 6 are respectively fixed to the module columns 1 and the module lower beams 2 or the module upper beams 3 to be connected. The buckling restraint plates 5 and the connecting beam ends 6 are fixedly connected by connecting bolts 8. The two buckling restraint plates 5 are symmetrically arranged, and the connecting pins fixedly connect the two connecting beam ends 6.

[0049] in, Figure 3 、 Figure 4 and Figure 5 As shown, the buckling constraint plate 5 includes a low yield point plate 9, a rubber protective layer 10, and a constraint sleeve 11. The constraint sleeve 11 is sleeved in the middle of the low yield point plate 9, and the rubber protective layer 10 is arranged between the low yield point plate 9 and the constraint sleeve 11. The low yield point plate 9 is a steel plate that is small in the middle and large on both sides and is easy to yield and enter plasticity. The low yield point plate 9 is the first to yield and dissipate energy under the action of an earthquake, thereby realizing reciprocating energy dissipation. A plurality of through holes 12 are respectively provided at both ends of the low yield point plate 9. The interior of the constraint sleeve 11 is hollow, and the low yield point plate 9 is inserted into the constraint sleeve 11. The constraint sleeve 11 has a restraining and anti-buckling effect on the low yield point plate. The rubber protective layer 10 arranged between the low yield point plate 9 and the constraint sleeve 11 increases the damping effect of the relative sliding between the low yield point plate 9 and the constraint sleeve 11.

[0050] The structural diagram of the connecting beam end is as follows Figure 6 As shown, it includes two flanges 13, two webs 14, and an end plate 15. The two flanges 13 and the two webs 14 are fixedly connected by welding to form a square, and their ends are welded together by an end plate 15. The end plate 15 is located at the end for connecting the beam end 6. The flange through holes are opened on the flange 13. The flange and the low yield point plate 9 are fixedly connected by bolts and nuts passing through the through holes, and the modular column 1 or the modular lower beam 2 and the modular upper beam 3 are fixedly connected. The flanges and webs of the connecting beam ends are fixedly connected to the modular columns and modular beams. The ends of the modular column 1, the modular lower beam 2, and the modular upper beam 3 are fixed to the side of the connecting beam end 6 without the end plate.

[0051] The connecting pin includes a connecting ear plate 16 and a pin 18. Figure 7 and Figure 8 As shown, a pin hole 17 is opened on the connecting ear plate; the connecting ear plate 16 is fixed to the end plate 15 at each end of the connecting beam.

[0052] When fixing during installation, the pin hole on the end plate of the connecting beam end of the module column 1 corresponds to the pin hole 17 on the end plate of the connecting beam end fixed to the module lower beam 2 or the module upper beam 3, and the pin 18 is fixed through the two corresponding pin holes 17 to realize the connection between the connecting beam end 6 of the module column 1 and the web of the connecting beam end 6 fixed to the module lower beam 2 or the module upper beam 3, thereby realizing the transmission of the axial force and shear force of the node web.

[0053] One end of the buckling restraint plate is fixed to the connecting beam end of the module column using bolts and nuts, and the other end is fixed to the connecting beam end of the module lower beam or module upper beam using bolts and nuts. In other words, two symmetrical buckling restraint plates are respectively placed on the wing plates on the side of the connecting beam end with the end plate. The buckling restraint plates and the connecting beam end are connected by connecting bolts. The connecting bolts include connecting screws and connecting nuts. The connecting screws pass through the through holes of the buckling restraint plates and the through holes of the wing plates and are then fixed with connecting nuts to achieve the connection between the buckling restraint plates and the connecting beam end, thereby connecting the connecting beam end fixed to the module column and the connecting beam end fixed to the module lower beam or module upper beam, and realizing the transmission of the axial force of the node flange (i.e., the transmission of the bending moment at the beam end).

[0054] The steel modular integrated building structure system with plastic controllable nodes provided above is a steel modular integrated building structure system with buckling-resistance flange plates and pin-connected web plates.

[0055] The single construction is convenient; the plastic controllable nodes of the steel formwork 5-block integrated building structure system with anti-buckling flange plate and pin-connected web can realize reciprocating bending energy dissipation and improve the module

[0056] Earthquake resistance; plasticity can be controlled.

[0057] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any person skilled in the art can use the above disclosed technical content to modify the present invention.

[0058] However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A steel modular integrated building structure system with plastic controllable nodes, characterized in that: It includes a module column, a module upper beam, a module lower beam and a plastic controllable node. The plastic controllable node is used to connect the module column and the module lower beam, and the plastic controllable node is used to connect the module column and the module upper beam. There are two or more module lower beams and module upper beams, and the module lower beams and module upper beams are adjacently arranged in parallel or separated and spaced apart. Each of the plastically controllable nodes includes a buckling restraint plate, a connecting beam end, a connecting pin and a connecting bolt. Two buckling restraint plates are provided and are symmetrically arranged. Two connecting beam ends are provided and are respectively fixed on the module column and the module lower beam or the module upper beam. The buckling restraint plate and the connecting beam end are fixedly connected by connecting bolts. The two buckling restraint plates are arranged in parallel, and the connecting pin is fixedly connected to the two adjacent connecting beam ends. The buckling restraint plate includes a low-yield point plate, a rubber protective layer, and a restraint sleeve, wherein the low-yield point plate is a steel plate that is small in the middle and large on both sides and is easy to yield and enter plasticity, and a through hole is provided on the low-yield point plate. The restraint sleeve is sleeved in the middle of the low-yield point plate, and the rubber protective layer is provided between the low-yield point plate and the restraint sleeve; The connecting beam end includes two wing plates, two web plates and an end plate. The two wing plates are fixedly connected to the two web plates to form a structure that is compatible with the module column, the module lower beam or the module upper beam. The end plate is fixedly arranged at one end formed by the two wing plates and the two web plates, and the other end is fixedly connected to the module column, the module lower beam or the module upper beam; wing plate through holes are opened on the wing plates, and the wing plate through holes and the through holes on the low yield point plate are fixedly connected by connecting bolts and nuts.

2. The steel modular integrated building structure system according to claim 1, characterized in that: The module columns are steel structure box columns, and the module lower beams and module upper beams are both steel structure beams, specifically box-shaped or I-shaped.

3. The steel modular integrated building structure system according to claim 1, characterized in that: The connecting pin includes a connecting ear plate and a pin. The connecting ear plate is fixed on the end plate of each connecting beam end. The connecting ear plate is provided with a pin hole. When used for connection, the pin is passed through two adjacent connecting ear plates to achieve a fixed connection.

4. The steel modular integrated building structure system according to claim 1, characterized in that: One end of the buckling restraint plate is fixed to the connecting beam end of the module column by connecting bolts and nuts, and the other end is fixed to the connecting beam end of the module lower beam or the module upper beam by connecting bolts and nuts.

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