Steel structure module box for achieving steel formwork shell combination column wall and construction method of steel structure module box

Abstract

The invention discloses a steel structure module box for achieving a steel formwork shell combination column wall and a construction method thereof. The steel structure module box comprises a plurality of modular units, and each modular unit comprises a frame body and a steel formwork shell component arranged on at least one edge of the frame body; the steel formwork component comprises a steel formwork plate and formwork embedded columns arranged on the two opposite sides of the steel formwork plate. In the multiple modular units, the steel formwork components of every two adjacent modular units in the horizontal direction jointly define a cavity. The integrated column or the integrated wall is formed between the adjacent modular units through cast-in-place of the steel formwork components on the edges of the modular units, and therefore connection between the modules is upgraded to continuous and rigid face connection from traditional discrete point / line connection. According to the structural design, the integrity and lateral stiffness of a building are improved, and the technical problem that an existing steel structure module box is difficult to apply to high-rise buildings and super high-rise buildings due to insufficient structural performance is effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building technology, and particularly relates to a steel structure module box for realizing a steel formwork combined column wall and a construction method thereof. BACKGROUND

[0002] At present, the steel structure module box plays an important role in the upgrading of building industrialization and green construction, but its application in high-rise and super high-rise buildings faces many challenges: first, the existing steel structure module is often connected with each other or with the lateral force resisting member, and the overall rigidity is not enough, which is difficult to meet the structural stress requirements in high-rise buildings or in areas with high seismic intensity; second, the large cross-section column formed after splicing not only affects the building use function, but also often needs to make large adjustments to the original building scheme and facade; third, the connection position of the traditional method is mostly concentrated in the corner box, which is difficult to balance the bearing capacity and stability of high-rise or super high-rise buildings.

[0003] Therefore, there is an urgent need in the art for a steel structure module box that can not only ensure the structural bearing capacity and lateral stiffness, but also reduce the outer peripheral joint and minimize the changes to the original building scheme. Thus, the demand for high-rise and super high-rise steel structure module boxes is met. SUMMARY

[0004] The main purpose of the present application is to provide a steel structure module box for realizing a steel formwork combined column wall and a construction method thereof, so as to solve the above technical problems.

[0005] In a first aspect, the present application provides a steel structure module box for realizing a steel formwork combined column wall, comprising:

[0006] a plurality of modular units, each of which comprises a frame body and a steel formwork member arranged at least one edge of the frame body; the steel formwork member comprises a steel formwork plate and a formwork hidden column arranged on opposite sides of the steel formwork plate;

[0007] Among the plurality of modular units, the steel formwork members of two horizontally adjacent modular units jointly enclose a cavity, and a steel reinforcement cage and concrete are arranged in the cavity, the concrete fills the cavity and covers the steel reinforcement cage, so as to form an integrated column or an integrated wall between the two horizontally adjacent modular units.

[0008] Among the plurality of modular units, the steel formwork members of two horizontally adjacent modular units jointly enclose a cavity, and a steel reinforcement cage and concrete are arranged in the cavity, the concrete fills the cavity and covers the steel reinforcement cage, so as to form an integrated column or an integrated wall between the two horizontally adjacent modular units.

[0009] Among the plurality of modular units, the steel formwork members of two horizontally adjacent modular units jointly enclose a cavity, and a steel reinforcement cage and concrete are arranged in the cavity, the concrete fills the cavity and covers the steel reinforcement cage, so as to form an integrated column or an integrated wall between the two horizontally adjacent modular units.

[0010] The structure that enhances the bond strength with the concrete includes through holes opened on the side wall of the concealed column of the formwork and / or studs fixed on the side wall of the concealed column of the formwork.

[0011] Among the plurality of modular units, the corresponding mold shell columns of two adjacent modular units along the vertical direction are fixedly connected by a vertical connector.

[0012] The mold shell column is a hollow column structure; the vertical connector is inserted into the opposite ends of the mold shell columns of two adjacent modular units along the vertical direction.

[0013] The vertical connector includes a central connecting part, a supporting base plate disposed at the bottom end of the central connecting part, and a reinforcing part connecting the supporting base plate and the central connecting part.

[0014] The vertical connector is installed inside the top of the mold shell column of the lower modular unit in two adjacent modular units along the vertical direction. The reinforcing part is fixedly connected to the inner wall of the top of the mold shell column, and the top of the central connector extends upward out of the top opening of the mold shell column to connect with the bottom of the mold shell column of the upper modular unit.

[0015] Among them, corner modular units are provided at the corners of the plurality of modular units; the corner modular unit is provided with the steel mold shell member on the first edge adjacent to a modular unit, and a corner member is provided on the second edge opposite to the first edge, which constitutes the outer edge of the steel structure modular box; the corner member has a vertical cavity.

[0016] The corner component includes a first steel mold shell plate and a second steel mold shell plate arranged opposite to each other, and two end steel columns arranged opposite to each other; the first steel mold shell plate, the second steel mold shell plate and the two end steel columns together form the vertical cavity.

[0017] Secondly, the present invention also provides a method for constructing a steel structure modular box, wherein the steel structure modular box includes multiple modular units, each modular unit including a frame and a steel formwork component comprising a steel formwork plate and a concealed formwork column disposed at at least one edge of the frame, and the construction method includes the following steps:

[0018] Pre-install steel cages at the locations where integrated columns or walls are to be formed;

[0019] hoisting at least two modular units in a horizontal direction side by side to form a lower layer structure, and making the steel formwork members of the horizontally adjacent modular units in the lower layer structure form a cavity outside the steel reinforcement cage periphery; pouring concrete into the cavity to form an integrated column or an integrated wall between the horizontally adjacent modular units in the lower layer structure; hoisting another modular unit as an upper layer modular unit above the lower layer structure, and aligning the formwork concealed column of the upper layer modular unit with the corresponding formwork concealed column of the modular unit in the lower layer structure; and fixedly connecting the formwork concealed column of the upper layer modular unit with the corresponding formwork concealed column of the modular unit in the lower layer structure through a vertical connecting piece.

[0020] The beneficial technical effects of the present application are:

[0021] The present application forms an integrated column or an integrated wall between adjacent modular units by pouring concrete on site using the steel formwork members of the edges, thereby upgrading the connection between modules from traditional discrete point / line connection to continuous and rigid surface connection. This structural design improves the integrity and lateral stiffness of the building, effectively solving the technical problem that existing steel structure module boxes are difficult to apply to high-rise and super high-rise buildings due to insufficient structural performance. In addition, this scheme integrates the connection structure and the wall function, avoiding the negative impact of traditional large-size connection nodes on the interior use space of the building, providing greater flexibility for architectural design, and at the same time, this integrated connection method also reduces the peripheral seam of the building. In addition, the steel formwork member serves as a removable formwork, simplifying the on-site construction process, shortening the construction period, and realizing the organic combination of the efficiency advantages of factory prefabrication and the integrity advantages of on-site pouring. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 A schematic diagram of a steel structure module box provided by the embodiment of the present application;

[0024] Figure 2 A schematic diagram of a modular unit in a steel structure module box provided by the embodiment of the present application;

[0025] Figure 3a A schematic diagram of a steel formwork member in a steel structure module box provided by the embodiment of the present application;

[0026] Figure 3b A schematic diagram of a steel formwork member and its internal steel reinforcement cage in a steel structure module box provided by the embodiment of the present application;

[0027] Figure 4a The upper and lower formwork hidden column schematic diagram in the steel structure module box provided by the embodiment of the present application is shown in the figure.

[0028] Figure 4b The lower formwork hidden column schematic diagram in the steel structure module box provided by the embodiment of the present application is shown in the figure.

[0029] Figure 5a The vertical connecting piece schematic diagram in the steel structure module box provided by the embodiment of the present application is shown in the figure.

[0030] Figure 5b The vertical connecting piece schematic diagram in the steel structure module box provided by the embodiment of the present application is shown in the figure.

[0031] Figure 6a The single module box schematic diagram in the steel structure module box provided by the embodiment of the present application is shown in the figure.

[0032] Figure 6b The adjacent modular unit and the upper and lower modular unit assembling schematic diagram in the steel structure module box provided by the embodiment of the present application is shown in the figure.

[0033] Figure 7 The construction method flow schematic diagram of the steel structure module box provided by the embodiment of the present application is shown in the figure.

[0034] The figure mark explanation is as follows:

[0035] In the figure: 110-modular unit, 111-frame body, 1111-steel beam, 1112-steel column, 112-steel formwork component, 113-steel formwork plate, 114-formwork hidden column, 118-through hole, 119-bolt, 121-steel reinforcement cage, 200-vertical connecting piece, 210-center connecting part, 220-bearing bottom plate, 230-strengthening part, 231-embedded groove, 240-connecting steel plate, 300-corner modular unit, 310-corner component, 312-first steel formwork plate, 313-second steel formwork plate, 314-end steel column. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0037] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0038] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0039] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0040] Please also refer to Figures 1-6b This invention provides a steel structure modular box for realizing a steel formwork composite column wall. The steel structure modular box is constructed from multiple prefabricated modular units 110 in a factory through on-site hoisting, splicing, and pouring processes. The steel structure modular box includes: multiple modular units 110, each modular unit 110 including a frame 111 and a steel formwork component 112 disposed on at least one edge of the frame 111; the steel formwork component 112 includes a steel formwork plate 113 and concealed formwork columns 114 disposed on opposite sides of the steel formwork plate 113; among the multiple modular units 110, the steel formwork components 112 of two horizontally adjacent modular units 110 together form a cavity, the cavity containing a reinforcing cage 121 and concrete, the concrete filling the cavity and covering the reinforcing cage 121 to form an integrated column or integrated wall between the two horizontally adjacent modular units 110.

[0041] In this embodiment, these modular units 110 are arranged according to the building floor plan. Each modular unit 110 is prefabricated in the factory, including the main structure and even some interior decoration, and then transported to the construction site for overall hoisting and placement.

[0042] Each modular unit 110 comprises a frame 111 and a steel formwork member 112 arranged at least one edge of the frame 111. The frame 111 is the basic load-bearing structure of the modular unit 110, which is formed by welding or bolting steel beams 1111, steel columns 1112 and other components, and forms a three-dimensional box frame. In this embodiment, the steel formwork member 112 is arranged at one or more edges of the frame 111 and is a component to be spliced with other modular units 110 to form a wall in the future.

[0043] The steel formwork member 112 is both a part of the modular unit 110 and a permanent formwork for subsequent site construction. The steel formwork member 112 comprises a steel formwork plate 113 and formwork concealed columns 114 arranged on opposite sides of the steel formwork plate 113. The steel formwork plate 113 can be a steel plate with a certain rigidity, and the side facing the inside of the modular unit 110 is flat, while the other side (i.e. the side that will form a cavity of the wall in the future) can be provided with reinforcing ribs (not shown in the figure) as needed. On the two vertical sides of the steel formwork plate 113, a formwork concealed column 114 is arranged respectively. The two formwork concealed columns 114 provide vertical support for the steel formwork plate 113 and serve as an interface for connecting with the frame of the modular unit 110. During the factory prefabrication stage, the steel formwork plate 113 and the formwork concealed columns 114 on both sides are assembled into a whole, i.e. the steel formwork member 112, which is then firmly connected with the frame 111 of the modular unit 110 (e.g. through steel beams).

[0044] During the site construction stage of the building, multiple modular units 110 are hoisted and spliced. For two horizontally adjacent modular units 110, they are hoisted side by side into position, and the steel formwork members 112 at their adjacent edges will face each other, thereby jointly enclosing a cavity. The two side walls of the cavity are formed by the steel formwork plates 113 of the two modular units 110 respectively, and the ends of the cavity are defined by the four formwork concealed columns 114 of the two steel formwork members 112.

[0045] After the cavity is formed, the construction personnel will set a steel reinforcement cage 121 in the cavity. The steel reinforcement cage 121 can be segmented and bound on site or can be prefabricated and hoisted as a whole into the cavity. The steel reinforcement cage 121 is set to enhance the tensile, shear and bending resistance of the wall formed in the end.

[0046] Finally, concrete is poured into the cavity filled with the steel reinforcement cage 121. The concrete fills the entire cavity and substantially covers the steel reinforcement cage 121. After the concrete solidifies, a monolithic column or wall is formed between the two originally independent modular units 110 due to the close combination of the concrete with the steel formwork members 112 of the two adjacent modular units 110.

[0047] In this way, the steel structure module box of the embodiment combines the industrialization advantages of prefabricated modules with the integrity advantages of cast-in-place concrete structures. The adjacent modular units 110 are rigidly connected through the integrally cast columns or walls, greatly improving the integrity and lateral stiffness of the entire building, effectively solving the problem of weak connection of traditional steel structure module boxes, which makes it difficult to apply to high-rise and super high-rise buildings. At the same time, the steel formwork plate 113 of the steel formwork component 112 serves as a removable formwork, saving the process and cost of field formwork and formwork removal, and speeding up the construction progress.

[0048] In an embodiment, the formwork column 114 includes an inner column connected to the frame 111 and an outer column away from the frame 111; the cavity is formed by the inner column, the outer column and the steel formwork plate 113 of each of the two horizontally adjacent modular units 110.

[0049] In this embodiment, the inner column refers to the formwork column 114 located closer to the frame side of the modular unit 110. The inner column is directly connected to the frame 111 of the modular unit 110 by welding, bolting or other rigid connection methods, becoming a component of the frame 111 structure.

[0050] The outer column refers to the formwork column 114 located away from the frame of the modular unit 110 and on the other side of the steel formwork plate 113. During the factory prefabrication stage of the modular unit 110, the outer column is assembled together with the steel formwork plate 113 and the inner column to form the whole steel formwork component 112.

[0051] Through the design of the inner and outer columns, the steel formwork component 112 not only ensures reliable connection with the frame 111, but also has sufficient overall stiffness, which can maintain stability during transportation and hoisting of the modular unit 110, and provide firm formwork support for subsequent concrete pouring.

[0052] During the on-site construction stage, when the two horizontally adjacent modular units 110 are hoisted into position, the cavity is formed more clearly: the cavity is formed by the inner column, the outer column and the steel formwork plate 113 of each of the two horizontally adjacent modular units 110.

[0053] The specific forming process is as follows: the steel formwork plates 113 of the two adjacent modular units 110 form two main side walls of the cavity, the inner columns of the two modular units 110 are located at the inner sides of the two ends of the cavity, and the outer columns are located at the outer sides of the two ends of the cavity. The outer column, the steel formwork plate 113 and the inner column of the left modular unit 110, and the inner column, the steel formwork plate 113 and the outer column of the right modular unit 110 together form a closed rectangular or approximately rectangular cavity.

[0054] This way of surrounding ensures the cavity has accurate geometric dimensions and good sealing. When the concrete is poured into the cavity with the steel reinforcement cage 121 inside, the concrete can fully contact and bond with the four formwork concealed columns 114 (two inner concealed columns and two outer concealed columns) and two steel formwork plates 113 of the horizontally adjacent two modular units 110, forming an integrated column or wall with excellent performance.

[0055] Through the reasonable arrangement of the inner concealed columns and the outer concealed columns, this embodiment not only optimizes the structural design of the steel formwork member 112, improves the prefabrication quality of the modular unit 110 and the operability of the on-site construction, but also further enhances the connection reliability between the integrated column or wall formed finally and the frame of the modular unit 110, so that the entire steel structure module box has better integrity and stress performance.

[0056] In an embodiment, the formwork concealed column 114 is provided with a structure for enhancing the bonding force with the concrete on the side wall facing the cavity.

[0057] In this embodiment, when the concrete is poured into the cavity surrounded by the steel formwork members 112 of two adjacent modular units 110, the concrete will wrap the formwork concealed column 114. In order to make the steel formwork concealed column 114 and the later-poured concrete more closely combined, forming a kind of structure similar to a "steel-concrete composite column", so as to more effectively cooperate in stress, this embodiment adds a structure for enhancing the bonding force on the specific surface of the formwork concealed column 114.

[0058] Here, the "side wall facing the cavity" refers to the side or sides of the formwork concealed column 114 that will be in direct contact with the subsequently poured concrete after the cavity is formed.

[0059] The structure for enhancing the bonding force with the concrete works in the following mechanism: when the concrete is poured and hardened, these structures can form a strong mechanical locking action (or "dowel action") with the concrete. When the integrated column or wall is subjected to external force (such as horizontal seismic force or wind load), the shear force between the formwork concealed column 114 and the concrete can be effectively transmitted through these structures, preventing slipping or disengagement between the two, ensuring that the steel structure part and the concrete part work together as a whole, thereby improving the shear capacity of the integrated column or wall.

[0060] By setting such structure of enhancing the binding force on the side wall of the formwork column 114 facing the cavity, the steel formwork column 114 of the modular unit 110 is no longer just a support of the formwork or a frame of the module, but is transformed into one of the force-bearing components of the composite wall. Such design improves the reliability and load-bearing capacity of the connecting joint, further optimizes the structural performance of the whole steel structure modular box, and better meets the stringent requirements of structural safety for high-rise and super high-rise buildings and high-intensity seismic areas.

[0061] In an embodiment, the structure of enhancing the binding force with the concrete includes through holes 118 opened on the side wall of the formwork column 114 and / or pegs 119 fixed on the side wall of the formwork column 114.

[0062] In the present embodiment, a plurality of through holes 118 can be opened on the side wall of the formwork column 114 facing the cavity. These through holes 118 can be round holes or oblong holes.

[0063] When the concrete is poured, the liquid concrete will flow through these through holes 118 and fill the whole cavity. After the concrete hardens, the concrete on both sides of the formwork column 114 is connected into a whole through these “concrete pins” penetrating the formwork column 114. In this way, a strong mechanical shear key is formed between the formwork column 114 and the concrete. When the wall bears shear force, the shear force needs to shear these penetrating concrete pins to make the formwork column 114 and the concrete slide relatively, thereby greatly enhancing the binding force and cooperative working capacity between them. The design of the through holes 118 makes the combination of the steel formwork column 114 and the concrete more in-depth and firm.

[0064] In other embodiments, in addition to opening through holes 118, pegs 119 can also be fixed on the side wall of the formwork column 114 facing the cavity. The pegs 119 are welded on the side wall of the formwork column 114 facing the cavity, and the heads and shanks of the pegs 119 will extend into the subsequently poured concrete. When the concrete hardens, the heads and shanks of the pegs 119 are firmly anchored inside the concrete. When there is a tendency of relative sliding between the formwork column 114 and the concrete, the pegs 119 will generate shear resistance, effectively transferring the shear force from the steel formwork column 114 to the concrete or vice versa.

[0065] In a specific embodiment, in order to achieve the best binding effect, through holes 118 and pegs 119 can be set on the side wall of the formwork column 114 simultaneously according to the specific force requirement and construction requirement. For example, through holes 118 can be opened on a part of the side wall of the formwork column 114, pegs 119 can be welded on another part of the side wall, or they can be arranged alternately on the same side wall. Such combination can take advantage of the advantages of both structures, further improving the binding performance of the steel formwork column 114 and the concrete.

[0066] In summary, under the action of horizontal loads such as earthquakes, a large shear force will be generated inside the wall. The existence of the through holes 118 and the studs 119 effectively prevents the slip and separation between the formwork hidden column 114 and the concrete, ensuring that they can deform together and resist external forces. This strong interface connection capability significantly improves the shear strength of the wall, providing better safety reserves and collapse resistance for the entire building when facing strong earthquakes, which is particularly critical for high-rise and super high-rise buildings.

[0067] In an embodiment, among the plurality of modular units 110, the corresponding formwork hidden columns 114 of two vertically adjacent modular units 110 are fixedly connected by a vertical connecting piece 200.

[0068] In a multi-story or high-rise steel structure module box, in addition to the need to solve the horizontal connection problem between adjacent modular units 110 on the same floor, the vertical connection of modular units 110 between floors is also crucial. Traditional steel structure module boxes often rely on connecting pieces at the corners of modular units 110 for upper and lower layer connection, which may have weak connection problems when subjected to large vertical or horizontal loads.

[0069] In this embodiment, "two vertically adjacent modular units 110" refers to modular units 110 arranged vertically adjacent to each other on different floors of a building. For example, a modular unit 110 on the second floor and the modular unit 110 directly below it on the first floor, or a modular unit 110 on the third floor and the modular unit 110 directly below it on the second floor, both constitute a vertically adjacent relationship.

[0070] "Corresponding formwork hidden columns 114" refers to formwork hidden columns 114 in two adjacent modular units 110 that correspond to each other in space and are on the same vertical axis. A formwork hidden column 114 of an upper modular unit 110 and a formwork hidden column 114 of a lower modular unit 110 are on the same vertical load-bearing line in the overall building, and these two formwork hidden columns 114 constitute a "corresponding formwork hidden column 114" relationship.

[0071] The vertical connecting piece 200 is a component for connecting the corresponding formwork hidden columns 114 of the upper and lower layers. The vertical connecting piece 200 can be a steel connecting component with sufficient tensile, compressive, and shear capacity. During on-site construction, after the lower modular unit 110 is hoisted into place, the vertical connecting piece 200 is used to fixedly connect the formwork hidden column 114 of the upper modular unit 110 with the corresponding formwork hidden column 114 of the lower modular unit 110 when hoisting the upper modular unit 110 into place.

[0072] Such fixed connection can be achieved in various ways, such as welding, high-strength bolt connection, or plug-in, etc. Through the connection of the vertical connecting piece 200, the formwork concealed column 114 of the upper and lower modular units 110 forms a continuous vertical force path, which can effectively transfer vertical loads (such as floor loads, snow loads, etc.) and horizontal loads (such as wind loads, seismic loads, etc.).

[0073] When the upper and lower modular units 110 are connected by the vertical connecting piece 200, and the cavities surrounded by the steel formwork members 112 of their adjacent edges are poured with concrete to form an integral column or an integral wall, the entire building forms a continuous and highly integrated structural system. This connection method not only solves the problem of weak connection between the upper and lower layers of the traditional steel structure module box, but also provides a continuous steel reinforcement framework for the subsequent poured concrete walls, further enhancing the load-bearing capacity and seismic performance of the overall structure.

[0074] Through the application of the vertical connecting piece 200, the steel structure module box of the embodiment can be applied to higher building heights and more stringent structural design requirements, effectively expanding the application range of the steel structure module box technology and providing reliable technical support for the development of high-rise and super high-rise steel structure module boxes.

[0075] In an embodiment, the formwork concealed column 114 is a hollow columnar structure; the vertical connecting piece 200 is inserted into the opposite ends of the formwork concealed columns 114 of the two vertically adjacent modular units 110.

[0076] In this embodiment, the formwork concealed column 114 is not a solid steel member, but a hollow columnar structure design. Such hollow formwork concealed column 114 can be a square steel pipe, a round steel pipe, or other hollow steel shapes. The hollow design not only reduces the self-weight of the member under the premise of ensuring the necessary bearing capacity, but also reduces the transportation and hoisting costs, and provides a convenient operating space for the installation of the vertical connecting piece 200.

[0077] Correspondingly, the vertical connecting piece 200 is inserted into the opposite ends of the formwork concealed columns 114 of the two vertically adjacent modular units 110. Specifically, the "opposite ends" refer to the top end of the formwork concealed column of the lower modular unit 110 and the bottom end of the formwork concealed column of the upper modular unit 110 in the corresponding formwork concealed columns 114 of the two vertically adjacent modular units 110. In actual construction, when the lower modular unit 110 is installed in place, the top end of its formwork concealed column 114 is open; when the upper modular unit 110 is ready for hoisting, the top end of its formwork concealed column 114 is also open.

[0078] The "inserting" connection of the vertical connecting member 200 refers to that the vertical connecting member 200 can be partially inserted into the inner cavity of the top end of the lower formwork column 114, and the other part is inserted into the inner cavity of the bottom end of the upper formwork column 114, so as to realize the connection of the upper and lower formwork columns 114. The vertical connecting member 200 can be a steel member (such as a steel square bar, a steel pipe, etc.) with a certain length, one end of which is inserted into the hollow interior of the lower formwork column 114, and the other end is inserted into the hollow interior of the upper formwork column 114.

[0079] Through the combination design of the hollow formwork column 114 and the inserting type vertical connecting member 200, the embodiment realizes simple and reliable connection between the upper and lower layers of the steel structure module box.

[0080] In an embodiment, the vertical connecting member 200 includes a central connecting part 210, a bearing bottom plate 220 arranged at the bottom end of the central connecting part 210, and a reinforcing part 230 connected between the bearing bottom plate 220 and the central connecting part 210; the vertical connecting member 200 is installed in the top end of the formwork column 114 of the lower modular unit 110 adjacent in the vertical direction, the reinforcing part 230 is fixedly connected with the inner wall of the top end of the formwork column 114, and the top end of the central connecting part 210 protrudes upwardly out of the top end opening of the formwork column 114 to be connected with the bottom end of the formwork column 114 of the upper modular unit 110.

[0081] In the embodiment, in order to enhance the stability and force transmission efficiency of the connection, the top end of the formwork column 114 is an opening, the vertical connecting member 200 includes a central connecting part 210, a bearing bottom plate 220 and a reinforcing part 230, and the vertical connecting member 200 is designed as a member that can be pre-installed in the interior of the top end of the lower formwork column 114.

[0082] The central connecting part 210 is the main part of the vertical connecting member 200, which is a square or rectangular tubular structure matched with the inner cavity of the formwork column 114. When installed, the lower half part is inserted into the inner cavity of the top end of the formwork column 114 of the lower modular unit (hereinafter referred to as the lower formwork column 114), and the upper half part protrudes upwardly out of the top end opening of the formwork column 114 for plug-in connection with the formwork column 114 of the upper modular unit 110 (hereinafter referred to as the upper formwork column 114).

[0083] The bearing bottom plate 220 is fixedly connected to the bottom end of the center connecting part 210. The planar size of the bearing bottom plate 220 is greater than the cross-sectional size of the center connecting part 210. When the center connecting part 210 is inserted into the lower layer formwork concealed column 114, the bearing bottom plate 220 is also placed in the top end inner cavity of the lower layer formwork concealed column 114 and fixedly connected thereto. The main function of the bearing bottom plate 220 is to serve as a clear bearing surface, uniformly and directly transmitting the vertical pressure (compression force) from the upper layer formwork concealed column 114 to the inner cavity wall surface of the lower layer formwork concealed column 114, forming a clear and reliable vertical load transmission path.

[0084] In order to ensure the strength of the connecting point between the bearing bottom plate 220 and the center connecting part 210, a reinforcing part 230 is further arranged therebetween. The reinforcing part 230 is a steel plate, one end of which is connected to the outer wall of the bottom end of the center connecting part 210, and the other end of which is connected to the upper surface of the bearing bottom plate 220. The reinforcing part 230 is further fixedly connected to the inner wall of the top end of the lower layer formwork concealed column 114 by welding or the like. This design improves the bending and shearing resistance of the vertical connecting part 200 itself, and further directly anchors the vertical connecting part 200 and the lower layer formwork concealed column 114 together through the reinforcing part 230.

[0085] In the construction process, the vertical connecting part 200 can be pre-installed and fixed in the top end of the lower layer formwork concealed column 114 of the modular unit 110 before the modular unit 110 is shipped or hoisted on site. When hoisting the upper layer modular unit 110 on site, only the hollow bottom end of the formwork concealed column 114 of the upper layer modular unit 110 needs to be aligned and sleeved into the upper half of the already extended center connecting part 210 of the lower layer, so that the centering and positioning can be quickly completed. Finally, the upper layer formwork concealed column 114 and the center connecting part 210 are completely fixed by welding or bolt connection.

[0086] Through the design of the vertical connecting part 200 with the bearing bottom plate 220 and the reinforcing part 230, the embodiment constructs a firm vertical connecting joint with a clear load transmission path, which can effectively transmit the load of the upper layer structure to the lower layer, ensuring the continuity and integrity of the entire steel structure modular box in the vertical direction, and is particularly suitable for high-rise and super high-rise buildings with extremely high requirements for structural safety and bearing capacity.

[0087] As shown in Figure 5b In a specific embodiment, a recess 231 is formed through the wall thickness direction of the bottom end of the center connecting part 210. The reinforcing part 230 can be accommodated in the recess 231 and fixedly connected thereto by welding, and the lower edge of the reinforcing part 230 is welded to the bearing bottom plate 220. This insertion type connection mode enhances the connection rigidity and bearing capacity between the center connecting part and the reinforcing part.

[0088] In addition, in order to enhance the combined effect of the vertical connecting member 200 and the upper layer of modular units 110, the center connecting part 210 extends beyond the top end of the lower layer of modular units 110, and a plurality of connecting steel plates 240 are fixedly arranged on the outer side wall thereof. When the modular units 110 of the upper layer are in place and the concrete is poured, the connecting steel plates 240 will be completely wrapped in concrete, playing a role similar to that of shear studs or reinforcing ribs, enhancing the mechanical interlocking force and shear force transmission capacity between the center connecting part 210 and the concrete filled in the upper layer of modular units 110, thereby forming a more reliable steel-concrete composite structure, further improving the overall performance and seismic performance of the connection joint.

[0089] In an embodiment, a corner modular unit 300 is arranged at the corner of the plurality of modular units 110; the corner modular unit 300 is provided with the steel formwork member 112 at a first edge adjacent to one of the modular units 110, and an angle member 310 is arranged at a second edge opposite to the first edge and constituting the outer edge of the steel structure module box; the angle member 310 has a vertical cavity.

[0090] In this embodiment, a corner modular unit 300 is specially arranged at the corner of the plurality of modular units 110. The edges of the corner modular unit 300 are designed differently according to the different connection objects:

[0091] On the one hand, the steel formwork member 112 identical to that in the modular units 110 is arranged at a first edge of the corner modular unit 300 adjacent to one of the modular units 110. The function of the steel formwork member 112 is to jointly form a cavity with the steel formwork member 112 of the adjacent modular unit 110 for pouring concrete on site, thereby realizing seamless connection of the corner modular unit with the main body of the module row.

[0092] On the other hand, an angle member 310 is arranged at a second edge opposite to the first edge and constituting the outer edge of the steel structure module box. Unlike the steel formwork member 112 which needs to be spliced to form a cavity, the angle member 310 is a self-contained structural component precast in the factory, and the key feature is that the angle member 310 itself has a vertical cavity.

[0093] The vertical cavity is an internal hollow space formed in the factory precast stage of the angle member 310. At the construction site, the vertical cavity is directly used to accommodate the steel reinforcement cage 121 and pour concrete to form the corner column of the steel structure module box. Since the angle member 310 has a cavity, it does not need to be spliced with another modular unit 110 to form a pouring space, greatly simplifying the on-site construction of the outer corner joint of the steel structure module box.

[0094] In an embodiment, the corner member 310 comprises a first steel formwork plate 312 and a second steel formwork plate 313 arranged oppositely, and two end steel columns 314 arranged oppositely; the first steel formwork plate 312, the second steel formwork plate 313 and the two end steel columns 314 together enclose the vertical cavity.

[0095] In the embodiment, the corner member 310 is a prefabricated structure with a cavity, which is specifically configured as follows: it comprises a first steel formwork plate 312 and a second steel formwork plate 313 arranged oppositely. In actual application, the first steel formwork plate 312 can serve as the outer formwork of the corner wall, and the second steel formwork plate 313 can serve as the inner formwork.

[0096] In order to connect the two steel formwork plates 113 into a closed structure, the corner member 310 further comprises two end steel columns 314 arranged oppositely. The two end steel columns 314 are fixedly connected to the two corresponding ends of the first steel formwork plate 312 and the second steel formwork plate 313, respectively.

[0097] Thus, the first steel formwork plate 312, the second steel formwork plate 313 and the two end steel columns 314 together enclose a tubular structure with a rectangular cross section. The internal hollow space enclosed by the four components.

[0098] The four-sided enclosed structure design makes the corner member 310 itself a complete formwork with sufficient rigidity. After being prefabricated in the factory, it can be directly transported to the site. During on-site construction, the principle of first installing the steel reinforcement cage is also followed, that is, the steel reinforcement cage 121 of the corner column is first fixed at the building corner position, and then the corner member 310 is hoisted into position, so that its vertical cavity surrounds and covers the pre-installed steel reinforcement cage 121. Subsequently, concrete pouring can be carried out without the need for complex on-site formwork operations. This way not only ensures the accuracy of the cross-sectional size of the corner column, but also unifies the construction process, significantly improving the overall construction efficiency and engineering quality.

[0099] In the embodiment, the end steel column 314 can be basically or completely identical in structure to the formwork concealed column 114 used to construct the steel formwork member 112 in the foregoing embodiment. For example, the end steel column 314 can also be a hollow columnar structure, and the side wall facing the vertical cavity can also be provided with structures for enhancing the bonding force with concrete, such as through holes 118 and / or pegs 119. In addition, when it is necessary to be connected with the corner member 310 of the upper or lower layer, the end steel column 314 can also adopt the same vertical connection mode as the formwork concealed column 114 in the foregoing embodiment.

[0100] As Figure 7As shown, corresponding to the steel structure module box of the steel formwork combined column wall in the above implementation, the embodiment of the present application further provides a construction method of the steel structure module box, the steel structure module box comprising a plurality of modular units 110, each of the modular units 110 comprising a frame body 111 and a steel formwork component 112 provided at at least one edge of the frame body 111, the steel formwork component 112 comprising a steel formwork plate 113 and a formwork concealed column 114, the construction method comprising the following steps S1-S4:

[0101] Step S1: Pre-installing a steel reinforcement cage 121 at a position where an integrated column or an integrated wall is to be formed.

[0102] In the embodiment, the steel reinforcement cage can be prepared in two ways: one is to manufacture the steel reinforcement cage 121 in advance at a processing site, transport it to the site, use a small hoisting device to hoist it into position, and complete the connection of the upper and lower layers of steel reinforcement at the column and wall positions; the other way is to bind and connect the steel reinforcement at the column and wall positions on the construction site. Regardless of the method used, the upper and lower layers of steel reinforcement cages need to be connected before hoisting the modular units 110.

[0103] Step S2: Hoisting at least two modular units 110 side by side in the horizontal direction into position to form a lower layer structure, and making the steel formwork components 112 of the horizontally adjacent modular units 110 in the lower layer structure form a cavity around the steel reinforcement cage 121; pouring concrete into the cavity to form an integrated column or an integrated wall between the horizontally adjacent modular units 110 in the lower layer structure.

[0104] In the embodiment, after the steel reinforcement cage 121 is installed and fixed, the modular units 110 are hoisted. The modular units 110 are pre-fabricated in the factory and transported to the construction site by truck. During on-site construction, a tower crane or other hoisting equipment is used to hoist the first modular unit 110 into position, with the steel formwork component 112 at the edge of the first modular unit 110 located on one side of the steel reinforcement cage 121. Then, the second modular unit 110 is hoisted to a horizontally adjacent position, so that the adjacent steel formwork components 112 of the two modular units 110 face each other and together form a closed cavity outside the pre-installed steel reinforcement cage 121.

[0105] After the cavity is formed, the assembly gap between the steel formwork members of the two modular units 110 is checked and sealed with a rubber stick, and then concrete is poured into the cavity. The concrete is pumped or in other ways to ensure that it can fully fill the entire cavity and completely wrap the reinforcement cage 121, and tightly combine with the inner surface of the steel formwork members 112 and the formwork concealed column. After the concrete solidifies, a solid and continuous integrated column or integrated wall is formed between the two originally independent modular units 110, thereby firmly connecting the lower structure as a whole, greatly improving the overall integrity and lateral stiffness of the structure.

[0106] Step S3: Hoist another modular unit 110 as an upper modular unit 110 above the lower structure, and align the formwork concealed column 114 of the upper modular unit 110 with the corresponding formwork concealed column 114 of the modular unit 110 in the lower structure.

[0107] In this embodiment, when the installation of the modular unit 110 of the lower structure is completed and the concrete reaches a certain strength, the hoisting of the upper modular unit 110 begins. The hoisting of the upper modular unit 110 requires more precise positioning control, not only to ensure its accurate position in the horizontal plane, but also to ensure that its formwork concealed column 114 can be vertically aligned with the corresponding formwork concealed column 114 of the lower structure.

[0108] Each formwork concealed column 114 of the upper modular unit 110 should form a vertical correspondence with the formwork concealed column 114 at the corresponding position of the lower structure to ensure the smooth installation of the subsequent vertical connecting piece 200.

[0109] Step S4: Fix and connect the formwork concealed column 114 of the upper modular unit 110 with the corresponding formwork concealed column 114 of the modular unit 110 in the lower structure through a vertical connecting piece 200.

[0110] In this embodiment, the installation of the vertical connecting piece 200 is before the hoisting of the upper modular unit 110, and the vertical connecting piece 200 is first fixed and connected with the formwork concealed column of the lower modular unit. After the upper modular unit 110 is hoisted and aligned, the cavity of the formwork concealed column will be sleeved on the other end of the vertical connecting piece 200 exposed. Finally, the upper formwork concealed column and the vertical connecting piece 200 are completely fixed by welding or high-strength bolts, and the vertical rigid connection of the upper and lower structures is completed.

[0111] By repeating the above steps S3 and S4, more layers of the modular units 110 can be continuously added upwards, thereby building a multi-story, high-rise steel structure modular box. Since the formwork concealed columns 114 of the upper and lower modular units 110 form continuous vertical components after being connected by the vertical connectors 200, when the upper modular unit 110 is hoisted into position, the steel formwork components 112 of the upper modular unit 110 will form a vertically continuous cavity with the steel formwork components 112 of the corresponding position of the lower modular unit 110. Therefore, when pouring the concrete of the upper layer, the concrete will not only fill the cavities between the horizontally adjacent modular units 110 of the upper layer, but also fill the vertical cavity between the upper and lower layers, thereby completely combining the formwork concealed columns 114 and the steel formwork components 112 of the upper and lower layers.

[0112] In this way, the integrated column or integrated wall in the entire building structure is actually three-dimensionally continuous: not only connecting adjacent modular units 110 in the horizontal direction, but also connecting the upper and lower modular units 110 in the vertical direction, forming a continuous wall similar to a cast-in-place reinforced concrete shear wall. This three-dimensional integrated wall connection method makes the steel structure modular box have the same overall and lateral stiffness as traditional cast-in-place buildings, effectively resisting seismic and wind loads, and meeting the structural safety requirements of high-rise and super high-rise buildings.

[0113] This construction method fully utilizes the efficiency advantages of factory prefabrication and the overall advantages of site pouring, shortening the construction period and ensuring the safety and reliability of the building structure, providing a mature construction technology for the application of steel structure modular boxes in various complex projects.

[0114] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A steel structure modular box for realizing a steel formwork combined column wall, characterized in that, include: Multiple modular units, each of the modular units including a frame and a steel mold shell component disposed on at least one edge of the frame; the steel mold shell component includes a steel mold shell plate and mold shell hidden columns disposed on opposite sides of the steel mold shell plate; In the plurality of modular units, the steel formwork components of two horizontally adjacent modular units together form a cavity, in which a reinforcing cage and concrete are provided. The concrete fills the cavity and covers the reinforcing cage to form an integral column or integral wall between the two horizontally adjacent modular units.

2. The steel structure modular box according to claim 1, characterized in that, The mold shell hidden column includes an inner hidden column connected to the frame and an outer hidden column away from the frame; the cavity is formed by the inner hidden column, the outer hidden column and the steel mold shell plate of each of the two horizontally adjacent modular units.

3. The steel structure modular box according to claim 1, characterized in that, The sidewall of the molded column facing the cavity is provided with a structure to enhance the bonding force with the concrete.

4. The steel structure modular box according to claim 3, characterized in that, The structure that enhances the bond strength with the concrete includes through holes opened in the side wall of the concealed column of the mold shell and / or studs fixed to the side wall of the concealed column of the mold shell.

5. The steel structure modular box according to claim 1, characterized in that, Among the plurality of modular units, the corresponding mold shell columns of two adjacent modular units along the vertical direction are fixedly connected by a vertical connector.

6. The steel structure modular box according to claim 5, characterized in that, The mold shell column is a hollow column structure; the vertical connector is inserted into the opposite ends of the mold shell columns of two adjacent modular units along the vertical direction.

7. The steel structure modular box according to claim 6, characterized in that, The vertical connector includes a central connecting part, a supporting base plate disposed at the bottom end of the central connecting part, and a reinforcing part connecting the supporting base plate and the central connecting part; The vertical connector is installed inside the top of the mold shell column of the lower modular unit in two adjacent modular units along the vertical direction. The reinforcing part is fixedly connected to the inner wall of the top of the mold shell column, and the top of the central connector extends upward out of the top opening of the mold shell column to connect with the bottom of the mold shell column of the upper modular unit.

8. The steel structure modular box according to claim 1, characterized in that, A corner modular unit is provided at the corner of the plurality of modular units; the corner modular unit has a steel mold shell member on a first edge adjacent to a modular unit, and a corner member is provided on a second edge opposite to the first edge, which forms the outer edge of the steel structure modular box; the corner member has a vertical cavity.

9. The steel structure modular box according to claim 8, characterized in that, The corner component includes a first steel mold shell plate and a second steel mold shell plate arranged opposite to each other, and two end steel columns arranged opposite to each other; the first steel mold shell plate, the second steel mold shell plate and the two end steel columns together form the vertical cavity.

10. A method for constructing a steel structure modular box, the steel structure modular box comprising multiple modular units, each modular unit comprising a frame and a steel formwork component comprising a steel formwork plate and a concealed formwork column disposed at at least one edge of the frame, characterized in that, The construction method includes the following steps: Pre-install steel cages at the locations where integrated columns or walls are to be formed; At least two modular units are hoisted into place side by side in the horizontal direction to form a lower structure, and the steel formwork components of the horizontally adjacent modular units in the lower structure form a cavity around the steel cage; concrete is poured into the cavity to form an integral column or integral wall between the horizontally adjacent modular units in the lower structure. Another modular unit is hoisted above the lower structure as an upper modular unit, and the hidden column of the upper modular unit's mold shell is aligned with the hidden column of the corresponding modular unit in the lower structure; and The mold shell hidden column of the upper modular unit is fixedly connected to the corresponding mold shell hidden column of the modular unit in the lower structure by a vertical connector.

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