Modular assembly type steel structure building connecting system and construction method thereof

Abstract

The application relates to a modular assembly type steel structure building connecting system, which comprises two pairs of C-shaped module columns, the upper end of each module column is transversely connected with a ceiling beam, the lower end of each module column is transversely connected with a floor beam, each pair of module columns is oppositely arranged at the open end of the C shape and is connected with a column horizontal connecting kit I, the horizontal connection of adjacent module columns is realized through the column horizontal connecting kit I, a node connecting piece is inserted at the column end opening of the node area between the column horizontal connecting kit I of the upper and lower adjacent steel structure module frame unit columns, a beam end connecting piece is inserted at the beam end butt joint of the ceiling beam and the floor beam of the corresponding module columns in the upper and lower adjacent steel structure module frame units, and the vertical connection of the upper and lower adjacent module columns is realized through the node connecting piece and the beam end connecting piece; the problems of high construction precision requirement, large construction space affecting internal decoration, low stiffness of the node connecting area and no reliable connection in the column-column horizontal direction of the current modular steel structure building connection are solved.

Description

Technical Field

[0001] This invention belongs to the field of prefabricated building technology, and relates to a modular prefabricated steel structure building connection system and its construction method. Background Technology

[0002] In recent years, the country has vigorously promoted the low-carbon, green, industrialized, and intelligent construction of civil buildings. Against the backdrop of reducing carbon emissions across all sectors of society, modular steel structure buildings have begun to attract industry attention due to their unique advantages over traditional building structures. These advantages include: fast construction speed and short construction time; factory prefabrication, controllable quality, less resource waste, and significantly reduced carbon emissions; and the ability to carry out internal pipeline laying, equipment installation, and other interior decoration in advance, greatly shortening the building's construction cycle.

[0003] Modular steel structure building is a new type of building structure system. It refers to the disassembly of the building structure, with each room in the building as an independent modular unit. The modular units are industrially produced in the factory, then transported to the construction site, and finally connected together by a reliable connection method to form a whole building.

[0004] The connection method between modular units will directly affect the load-bearing capacity, stiffness, seismic performance, installation efficiency, and design methods of modular steel structure buildings.

[0005] Currently, most connections between modules in modular steel structure buildings are still made by bolting between beam and column joints, a small portion are made by pre-embedding steel connectors and grouting, and a few are made by prestressed tie rods and self-locking corner fittings.

[0006] The connection methods mentioned above, which have been proposed or applied in engineering practice, each have their own advantages, but they also have many problems.

[0007] For example, bolted connections require high construction precision and ample construction space. High precision hinders rapid assembly and can lead to construction difficulties, while ample space necessitates internal access points within the modules, impacting interior finishing. From the perspective of node strength and stiffness, most of the aforementioned connection methods are either semi-rigid or flexible, limiting the potential for increasing the height of modular buildings. From the perspective of connection areas, existing methods connect module units only at their corners, creating a "stacked beam and multiple column" structure. Columns are only connected at their ends, lacking reliable horizontal connections elsewhere. This results in the combined columns not coordinating load-bearing, leading to a large overall cross-section, material waste, and complex stress distribution. Summary of the Invention

[0008] In view of this, the present application provides a modular fabricated steel structure building connection system based on grouting connection to solve the problems of high construction precision requirement, large construction space affecting interior decoration, low stiffness of node connection area and no reliable connection in the horizontal direction of column-column.

[0009] To achieve the above object, the present application provides the following technical solutions:

[0010] A modular fabricated steel structure building connection system, each steel structure module frame unit includes two pairs of C-shaped module columns, the upper end of each module column is transversely connected with a ceiling beam, and the lower end is transversely connected with a floor beam, each pair of module columns is oppositely arranged at the C-shaped open end and connected with a column horizontal connection kit I, the horizontal connection of adjacent module columns is realized through the column horizontal connection kit I, a node connecting piece is inserted at the column end opening of the node area between the column horizontal connection kits I of the upper and lower adjacent steel structure module frame units, and a beam end connecting piece is inserted at the beam end butt joint of the corresponding module columns of the ceiling beam and the floor beam of the upper and lower adjacent steel structure module frame units, and the vertical connection of the upper and lower adjacent module columns is realized through the node connecting piece and the beam end connecting piece.

[0011] Further, the column horizontal connection kit I is in the shape of a ladder, and the two ends of the column horizontal connection kit I are recessed and clamped at the C-shaped open end of each pair of module columns.

[0012] Further, a column horizontal connection kit II is arranged between the beam-column node sections of the two pairs of module columns, the column horizontal connection kit II is in the shape of a ladder, the two ends of the column horizontal connection kit II are recessed and clamped at the C-shaped open end of each pair of module columns, and the column horizontal connection kit II is connected by a thin-walled square steel tube in the middle.

[0013] Further, beam end openings are formed at the butt joints of the ceiling beams and the floor beams of the two pairs of module columns, the beam end connecting piece is an ear plate with a shear nail, the shear nail is inserted into the corresponding beam end opening of the ceiling beam or the floor beam, and the end of the ceiling beam and the floor beam away from the module column is fixed with a beam end grouting sealing plate.

[0014] Further, a C-shaped stiffener plate is fixedly installed inside the position where the module column is connected with the corresponding ceiling beam and floor beam.

[0015] Further, it further includes a connecting plate for fixing the node connecting piece, a strip-shaped hole is formed in the middle of the connecting plate for the column horizontal connection kit II to pass through, symmetrical rectangular holes are formed on both sides of the strip-shaped hole, and the node connecting piece is inserted into the rectangular hole.

[0016] Further, the rectangular hole and the C-shaped stiffener plate form a recess shape that is matched.

[0017] Further, the node connector is one of a cross-section connector, a square tube section connector, an H-shaped steel section connector or a channel steel section connector.

[0018] Further, the ceiling beam and the floor beam are rectangular section steel beams.

[0019] The construction method of the modular assembly type steel structure building connection system comprises the following steps:

[0020] S1, abutting the C-shaped open ends of two adjacent module columns in the horizontal direction and inserting them into the column horizontal connection sleeve I, connecting the adjacent module columns in the horizontal direction through the column horizontal connection sleeve I, so that the adjacent module columns become a combined column;

[0021] S2, inserting the column horizontal connection sleeve II above the column horizontal connection sleeve I, and assembling the beam end connector on the ceiling beam at the upper end of the combined column, and inserting the shear nails on the ear plate in the beam end connector into the beam end opening on the ceiling beam;

[0022] S3, inserting the node connector into the connecting plate, and sleeving the connecting plate with the node connector on the column horizontal connection sleeve II, and aligning the connecting plate with the ear plate in the beam end connector, and pouring concrete into the assembled combined column to connect the combined column formed by the module column as a whole and cooperatively stressed;

[0023] S4, after the combined column assembly and various connector installation and concrete pouring of the same layer are completed, the module hoisting of the upper layer is carried out, and after the hoisting of the new layer is completed, the horizontal connection of the left and right adjacent module columns and the installation of the beam end connector are carried out, that is, the other end of the shear nail is inserted into the beam end opening on the floor beam of the corresponding module column, and then grouting is carried out, and the assembly and grouting are carried out along the length direction and height direction of the module column.

[0024] The beneficial effects of the present application are:

[0025] The modular assembly type steel structure building connection system disclosed in the present application connects the module columns in the horizontal direction through the column horizontal connection sleeve, solves the problem of no horizontal connection between the columns and the columns through the connecting piece, connects the module columns in the vertical direction through the node connector and the beam end connector, and the connection construction of the modular steel structure building can be carried out only outside the module, without the need for high construction precision. Only grouting is needed in the column connection area and the beam end, and the assembly type grouting connection method is reliable and improves the connection stiffness of the module column node area. The problems of high construction precision, large construction space affecting internal decoration, low stiffness of the node connection area and no reliable connection in the horizontal direction of the column-column of the current modular steel structure building connection are solved.

[0026] Additional advantages, objects, and features of the application will be apparent to those skilled in the art upon examination of the following specification. It is intended that the application not be limited by any of the details of the specification, unless so expressly desired, but instead be controlled by the full breadth permitted by the claims. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to make the objectives, technical solutions and advantages of the present application clearer, the preferred embodiments of the present application will be described in detail below with reference to the drawings, in which:

[0028] Figure 1 Structure diagram of the modular assembly type steel structure building connection system of the present application when not assembled;

[0029] Figure 2 The present application Figure 1 Local enlarged view of the connection node at the module column;

[0030] Figure 3 The present application Figure 2 Local enlarged view of the connection node after removing one side module column.

[0031] Reference signs: upper left module column 1, upper left module column floor beam I 11, upper left module column floor beam II 12, upper right module column 2, upper right module column floor beam I 21, upper right module column floor beam II 22, lower left module column 3, lower left module column ceiling beam I 31, lower left module column ceiling beam II 32, lower right module column 4, lower right module column ceiling beam I 41, lower right module column ceiling beam II 42, node connecting piece 5, beam end connecting piece 6, double beam connecting piece 61, four beam connecting piece 62, shear nail 63, lug plate 64, beam end grouting sealing plate 65, beam end hole 66, column horizontal connecting sleeve I 7, column horizontal connecting sleeve II 8, stiffened plate 9, connecting plate 10. DETAILED DESCRIPTION

[0032] The present application will now be described by way of specific embodiments thereof, and as examples only, which do not limit the scope of the application. The present application can be carried out by different embodiments that will be described below, and as examples only, which do not limit the scope of the application. The details of the specification can be modified based on different views and applications without departing from the spirit of the present application. It should be noted that the drawings provided in the following examples only illustrate the basic concept of the present application in a schematic manner, and the following examples and features in the examples can be combined with each other without conflict.

[0033] The drawings are only used for exemplary illustration, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation on the present application; in order to better illustrate the embodiments of the present application, some components of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings can be omitted.

[0034] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present application, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0035] As shown in Figures 1-3 A modular assembly type steel structure building connecting system, which connects several steel structure module frames through connecting pieces and then grouts to form a whole, each steel structure module frame is a cubic frame composed of four steel columns and eight steel beams.

[0036] The assembly type steel structure building connecting system is mainly used for studying horizontal and vertical connections between module columns and module columns, wherein each steel structure module frame unit includes two pairs of C-shaped module columns, each module column is transversely connected with a ceiling beam at the upper end and a floor beam at the lower end, the two pairs of module columns at the connection node of the upper and lower adjacent steel structure module frame units are in turn left upper module column 1, right upper module column 2, left lower module column 3 and right lower module column 4, the floor beams at the lower end of the left upper module column 1 are left upper module column floor beam I 11 and left upper module column floor beam II 12, the floor beams at the lower end of the right upper module column 2 are right upper module column floor beam I 21 and right upper module column floor beam II 22, the ceiling beams at the upper end of the left lower module column 3 are left lower module column ceiling beam I 31 and left lower module column ceiling beam II 32, and the ceiling beams at the upper end of the right lower module column 4 are right lower module column ceiling beam I 41 and right lower module column ceiling beam II 42.

[0037] The upper left module column 1 and the upper right module column 2 and the lower left module column 3 and the lower right module column 4 are oppositely arranged with the middle C-shaped open ends, and are connected with the column horizontal connecting sleeve I 7, the column horizontal connecting sleeve I 7 is in the shape of a ladder, and the two ends of the column horizontal connecting sleeve I 7 are clamped in the corresponding module column internal C-shaped open end. The length of the column horizontal connecting sleeve I 7 is shorter than the corresponding module column, the upper left module column 1 and the upper right module column 2 and the lower left module column 3 and the lower right module column 4 are fixed by the ladder-shaped column horizontal connecting sleeve I 7, and the horizontal connection of the upper left module column 1 and the upper right module column 2 and the lower left module column 3 and the lower right module column 4 is realized.

[0038] The beam-column joint section between the column horizontal connecting sleeve I 7 is provided with the column horizontal connecting sleeve II 8, the column horizontal connecting sleeve II 8 is installed in the beam-column joint section, and has a reinforcing effect on the beam-column joint section. The column horizontal connecting sleeve II 8 is in the shape of a ladder, and the two ends of the column horizontal connecting sleeve II 8 are clamped in the C-shaped open end at the end of the corresponding module column. The middle of the column horizontal connecting sleeve II 8 is connected by a thin-walled square steel pipe, which has a local reinforcing effect on the beam-column joint. In addition to further strengthening the horizontal connection of the upper left module column 1 and the upper right module column 2 and the lower left module column 3 and the lower right module column 4, the column horizontal connecting sleeve II 8 also has a vertical connection effect on the upper left module column 1 and the lower left module column 3 and the upper right module column 2 and the lower right module column 4. After the column is grouted, the independent horizontal module column becomes a combined column with cooperative stress.

[0039] The left upper module column floor beam I 11 and the left lower module column ceiling beam I 31, the left upper module column floor beam II 12 and the left lower module column ceiling beam II 32, the right upper module column floor beam I 21 and the right lower module column ceiling beam I 41, and the right upper module column floor beam II 22 and the right lower module column ceiling beam II 42 are all provided with beam end openings 66 at the butt joint positions, the beam end connectors 6 are ear plates 64 with shear nails 63, the beam end connectors 6 inserted at the butt joint positions of the left upper module column floor beam I 11 and the left lower module column ceiling beam I 31 are double-beam connectors 61, the beam end connectors 6 inserted at the butt joint positions of the left upper module column floor beam II 12 and the left lower module column ceiling beam II 32 and the right upper module column floor beam I 21 and the right lower module column ceiling beam I 41 are four-beam connectors 62, and the beam end connectors 6 inserted at the butt joint positions of the right upper module column floor beam II 22 and the right lower module column ceiling beam II 42 are double-beam connectors 61. The vertical fixed connection of one group of floor beams and ceiling beams is realized through the double-beam connectors 61, and the vertical fixed connection of two groups of floor beams and ceiling beams is realized through the four-beam connectors 62. The shear nails 63 are inserted into the corresponding beam end openings 66 of the ceiling beams or the floor beams, and the beam end grouting sealing plates 65 are fixed at the ends of the ceiling beams and the floor beams away from the module columns. After the beam end grouting, the two have the effect of making the upper and lower module ceiling beams and floor beams form a whole, and have a cooperative effect to resist bending moment and shear force.

[0040] The left upper module column floor beam I 11, the left upper module column floor beam II 12, the right upper module column floor beam I 21, the right upper module column floor beam II 22, the left lower module column ceiling beam I 31, the left lower module column ceiling beam II 32, the right lower module column ceiling beam I 41 and the right lower module column ceiling beam II 42 are all rectangular section steel beams.

[0041] Two C-shaped stiffening plates are fixedly installed inside the position where the left upper module column 1 and the right upper module column 2 are connected to the corresponding floor beams after being formed as a whole, and two C-shaped stiffening plates are fixedly installed inside the position where the left lower module column 3 and the right lower module column 4 are connected to the corresponding ceiling beams after being formed as a whole. The node connecting piece 5 is sleeved with a connecting plate 10 for fixing the node connecting piece 5, the connecting plate 10 is provided with a strip-shaped hole in the middle for the column horizontal connection sleeve piece II 8 to pass through, and symmetrically arranged rectangular holes are arranged on both sides of the strip-shaped hole, and the node connecting piece 5 is inserted into the rectangular hole. The rectangular hole and the groove formed by the C-shaped stiffening plate are matched in shape.

[0042] The node connecting piece 5 is used for vertically connecting the module columns, and after grouting, the upper and lower module columns are formed as a whole to resist bending moment, shear force and axial force. The connecting plate 10 is used for horizontally connecting the ends of the module columns and serves as a fixing framework of the node connecting piece, facilitating the installation of the node connecting piece.

[0043] The node connecting piece 5 is a cross-section connecting piece, and the form of the connecting piece is not fixed here, and other forms of connecting pieces can be used, such as square tube section connecting piece, H-shaped steel section connecting piece, channel section connecting piece and the like.

[0044] The construction method of the modular fabricated steel structure building connection system comprises the following steps:

[0045] S1, the C-shaped open ends of the horizontally adjacent left lower module column 3 and the right lower module column 4 are butted and then inserted into the column horizontal connection sleeve piece I 7, and the horizontally adjacent module columns are connected through the column horizontal connection sleeve piece I 7, so that the adjacent module columns become a combined column;

[0046] S2, the column horizontal connection sleeve piece II 8 is inserted above the column horizontal connection sleeve piece I 7, and the beam end connecting piece is assembled on the ceiling beam at the upper end of the combined column, one end of the shear-resistant nail 63 on the ear plate 64 of the beam end connecting piece is inserted into the beam end opening hole 66 on the ceiling beam, a group of floor beams and ceiling beams are fixedly connected in the vertical direction through the double-beam connecting piece 61, and two groups of floor beams and ceiling beams are fixedly connected in the vertical direction through the four-beam connecting piece 62;

[0047] S3, the node connecting piece 5 is inserted into the connecting plate 10, the connecting plate 10 with the node connecting piece 5 is sleeved on the column horizontal connecting sleeve II 8, the connecting plate 10 is flush with the middle ear plate 64 of the beam end connecting piece, and the concrete is poured into the assembled column to make the module column form a whole force cooperation;

[0048] S4, after the module column assembly and various connecting piece installation and concrete pouring of the same layer are completed, the module hoisting of the upper layer is carried out, i.e. the left upper module column 1 and the right upper module column 2 are hoisted on the corresponding left lower module column 3 and the right lower module column 4, when the module hoisting of the new layer is completed, the horizontal connection of the left and right adjacent module columns and the installation of the beam end connecting piece are carried out, i.e. the other end of the shear nail 63 is inserted into the beam end opening hole 66 on the corresponding module column floor beam, then grouting is carried out, and the assembly and grouting are carried out along the length direction and the height direction of the module column.

[0049] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should be covered in the scope of the claims of the present application.

Claims

1. A modular fabricated steel construction connection system, characterized in that, Each steel structure module frame unit comprises two pairs of C-shaped module columns, the upper end of each module column is transversely connected with a ceiling beam, and the lower end of each module column is transversely connected with a floor beam, the C-shaped open ends of each pair of module columns are oppositely arranged and connected with a column horizontal connecting sleeve I, the horizontal connection of adjacent module columns is realized through the column horizontal connecting sleeve I, a node connecting piece is inserted at the column end opening of the node area between the column horizontal connecting sleeves I of the upper and lower adjacent steel structure module frame units, a beam end connecting piece is inserted at the beam end abutting position of the ceiling beam and the floor beam of the corresponding module columns in the upper and lower adjacent steel structure module frame units, and the vertical connection of the upper and lower adjacent module columns is realized through the node connecting piece and the beam end connecting piece; the inside of the position where the module column is connected with the corresponding ceiling beam and floor beam is fixedly provided with a C-shaped stiffener plate; The column horizontal connecting sleeve I is in the shape of a ladder, the two ends of the column horizontal connecting sleeve I are recessed and clamped at the C-shaped open ends of each pair of module columns, the beam-column node section between the column horizontal connecting sleeves I of the two pairs of module columns is provided with a column horizontal connecting sleeve II, the column horizontal connecting sleeve II is in the shape of a ladder, the two ends of the column horizontal connecting sleeve II are recessed and clamped at the C-shaped open ends of each pair of module columns, and the column horizontal connecting sleeve II is connected through a thin-walled square steel pipe in the middle. Further comprising a connecting plate for fixing the node connecting piece, a strip-shaped hole is formed in the middle of the connecting plate for the column horizontal connecting sleeve II to pass through, symmetric rectangular holes are formed on both sides of the strip-shaped hole, and the node connecting piece is inserted into the rectangular hole; the rectangular hole is matched with the recessed shape formed by the C-shaped stiffener plate.

2. The modular fabricated steel building connection system of claim 1, wherein, Beam end openings are formed at the abutting positions of the ceiling beams and the floor beams of the two pairs of module columns, the beam end connecting piece is an ear plate with a shear nail, the shear nail is inserted into the corresponding beam end opening of the ceiling beam or the floor beam, and a beam end grouting sealing plate is fixed to the end of the ceiling beam and the floor beam away from the module column.

3. The modular fabricated steel building connection system of claim 2, wherein, The node connecting piece is one of a cross-section connecting piece, a square tube cross-section connecting piece, an H-shaped steel cross-section connecting piece and a channel steel cross-section connecting piece.

4. The modular fabricated steel building connection system of claim 3, wherein, The ceiling beam and the floor beam are rectangular cross-section steel beams.

5. The construction method of the modular prefabricated steel structure building connection system as described in claim 4, characterized in that, The method comprises the following steps: S1, abutting the C-shaped open ends of two horizontally adjacent module columns and inserting the column horizontal connecting sleeve I, realizing the horizontal connection of the adjacent module columns through the column horizontal connecting sleeve I, so that the adjacent module columns become a combined column; S2, inserting the column horizontal connecting sleeve II above the column horizontal connecting sleeve I, assembling the beam end connecting piece on the ceiling beam at the upper end of the combined column, and inserting one end of the shear nail on the ear plate of the beam end connecting piece into the beam end opening on the ceiling beam; S3, inserting the node connecting piece into the connecting plate, sleeving the connecting plate provided with the node connecting piece on the column horizontal connecting sleeve II, aligning the connecting plate with the ear plate of the beam end connecting piece, and pouring concrete into the assembled combined column to connect the combined column formed by the module columns as a whole. S4, after the assembly of the combined columns in the same layer and the installation of various connecting pieces and the pouring of concrete are completed, hoist the module of the upper layer, when the hoisting of the new module is completed, install the horizontal connection of the left and right adjacent module columns and the connecting piece at the end of the beam, that is, after the other end of the shear nail is inserted into the beam end opening on the corresponding module column floor beam, grouting is carried out, and the assembly and grouting are carried out along the length direction and height direction of the module column in this way.

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