Fabricated steel frame platform structure system and its processing and manufacturing method

Abstract

The application relates to the technical field of structural engineering, in particular to an assembly type steel frame platform structure system and a processing and manufacturing method thereof, which comprises a steel beam module, a plate module and a plurality of platform column modules; the plate module comprises a laminated plate, the laminated plate comprises a plurality of prefabricated plates and a cast-in-place layer, the plurality of prefabricated plates are laid on the steel beam module, reserved steel bars are arranged on the prefabricated plates, and the cast-in-place layer is arranged on the prefabricated plates; the platform column module comprises a concrete column and a steel pipe column, the bottom end of the concrete column is fixedly connected with the ground, one end of the steel pipe column is connected with the plate module, the other end of the steel pipe column is connected with the concrete column, and the steel beam module is connected with the steel pipe column. The steel beam module and the steel pipe column in the assembly type steel frame platform structure system in the application are processed in a factory and are connected and assembled on site. The assembly speed can be improved, the construction period can be shortened, and meanwhile, the engineering quality is guaranteed.

Description

Technical Field

[0001] This application relates to the field of structural engineering technology, specifically to a prefabricated steel frame platform structure system and its processing and manufacturing method. Background Technology

[0002] Traditional reinforced concrete platforms are typically constructed on-site, meaning that most of the work, from erecting scaffolding, setting up formwork, tying reinforcing bars to pouring concrete, is done manually on-site. Cast-in-place platform slabs, however, offer advantages such as high rigidity, good overall integrity, excellent seismic and impact resistance, and ease of opening.

[0003] However, cast-in-place platform slabs require formwork support, and the formwork used for formwork is a disposable material, resulting in a large waste of materials. At the same time, cast-in-place platform slabs involve a large amount of wet work on site, a long construction period, low construction efficiency, and significant pollution, which does not meet the requirements of my country's current development of industrialized and green construction. Summary of the Invention

[0004] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a prefabricated steel frame platform structure system and its processing and manufacturing method.

[0005] On the one hand, this application provides a prefabricated steel frame platform structure system, including:

[0006] Steel beam modules;

[0007] The slab module includes a composite slab, which includes multiple precast slabs and a cast-in-place layer. The multiple precast slabs are laid on the steel beam module, and steel trusses are provided on the precast slabs. The cast-in-place layer is provided on the precast slabs, and the steel trusses are embedded in the cast-in-place layer.

[0008] Multiple platform column modules, each comprising a concrete column and a steel pipe column, wherein the bottom end of the concrete column is fixedly connected to the ground, one end of the steel pipe column is connected to the slab module, and the other end is connected to the concrete column, and the steel beam module is connected to the steel pipe column.

[0009] Optionally, the steel pipe column includes a steel pipe, the lower end of which is inserted into the concrete column. The steel pipe includes a base plate, and concrete column anchor bolts are pre-embedded in the concrete column. The base plate is connected to the concrete column anchor bolts.

[0010] Optionally, the steel pipe column includes multiple outer ring plates and multiple steel column stiffening plates. The multiple outer ring plates are spaced apart on the upper end of the steel pipe along the extension direction of the steel pipe to form a connection end that matches the cross-section of the steel beam module. The multiple steel column stiffening plates are spaced apart along the circumference of the steel pipe and connected to the outer ring plates.

[0011] Optionally, the steel beam module includes multiple longitudinal beams, multiple transverse beams, multiple cantilever beams, and multiple edge-sealing beams, with the multiple longitudinal beams and multiple transverse beams being connected in an alternating manner;

[0012] Multiple edge sealing beams are each disposed outside the two outermost longitudinal beams and are arranged in parallel. The cantilever beam is disposed in the extension direction of the transverse beam, with one end of the cantilever beam connected to the longitudinal beam and the other end connected to the edge sealing beam.

[0013] Optionally, the longitudinal beam includes an H-beam and a box beam, and in the extending direction of the longitudinal beam, two adjacent steel pipe columns are connected by the H-beam or the box beam;

[0014] The crossbeam includes an H-beam and H-beam secondary beams. In the extension direction of the crossbeam, the H-beam connects two adjacent steel pipe columns. The H-beam secondary beams are arranged parallel to and spaced apart between the adjacent H-beams. The two ends of the H-beam secondary beams are respectively connected to two adjacent longitudinal beams.

[0015] Optionally, the cantilever beam is welded to the edge sealing beam;

[0016] The H-beam longitudinal beam includes a short beam and a steel beam stiffening plate. The short beam is welded to the beam body of the H-beam longitudinal beam, and the steel beam stiffening plate is connected to the short beam and welded to the H-beam longitudinal beam.

[0017] The steel beam module also includes multiple first connecting plates and multiple second connecting plates. Bolt holes are provided on both the short beam and the H-beam secondary beam. The first connecting plate is provided with first bolt holes corresponding to the bolt holes. Bolts pass through the first bolt holes and are threaded into the first bolt holes to fix the first connecting plate, the short beam and the H-beam secondary beam. At the same time, the beam ends of the short beam and the H-beam secondary beam are welded.

[0018] Bolt holes are provided on both sides of the end where the H-shaped steel longitudinal beam and the steel pipe column are connected. The second connecting plate is provided with a second bolt hole corresponding to the bolt hole. The bolt passes through the second bolt hole and is threaded into the second bolt hole to fix the second connecting plate, the H-shaped steel longitudinal beam and the steel pipe column. At the same time, the connecting ends of the H-shaped steel longitudinal beam and the steel pipe column are welded.

[0019] Optionally, wet joints are provided between the multiple precast slabs, and studs are provided on the steel beam modules at the wet joints. The reserved reinforcing bars in the precast slabs extend out of the precast slabs, and the studs are arranged alternately with the reserved reinforcing bars in the precast slabs, and / or,

[0020] A wet joint is provided between multiple precast slabs, and multiple embedded longitudinal bars are provided along the extension direction of the wet joint.

[0021] Optionally, the slab module includes a post-pouring strip, which is disposed within the wet joint, and a slope-finding layer is provided on the cast-in-place layer and the post-pouring strip.

[0022] In this application, the prefabricated steel frame platform structure system features steel beam modules and steel pipe columns that are fabricated in the factory and assembled on-site. This improves assembly speed, shortens construction time, and ensures project quality.

[0023] On the other hand, this application provides a method for processing and manufacturing a prefabricated steel frame platform structure system, including the following steps:

[0024] Constructing platform column modules: Concrete columns are formed by pouring concrete on site, and the concrete columns are connected to the ground. One end of a steel pipe column is then connected to the concrete column.

[0025] Connecting steel beam module: The steel beam module is connected to the steel pipe column;

[0026] Slab module: The slab module includes a composite slab, which includes multiple precast slabs and a cast-in-place layer. The precast slabs are laid on the steel beam module, and the cast-in-place layer is formed by pouring post-cast concrete onto the precast slabs.

[0027] Optionally, the steel pipe column includes a steel pipe, the lower end of which is inserted into the concrete column. The steel pipe includes a base plate, and concrete column anchor bolts are pre-embedded in the concrete column to connect the base plate to the concrete column anchor bolts.

[0028] After concrete is poured into the steel pipe, it is sealed with a steel plate.

[0029] The cantilever beam is welded to the edge-sealing beam. The short beam is welded to the beam body of the H-beam longitudinal beam. The steel beam stiffening plate is connected to the short beam and welded to the H-beam longitudinal beam. The short beam and the H-beam secondary beam are bolted together by the first connecting plate, and the beam ends of the short beam and the H-beam secondary beam are welded together. The connecting ends of the H-beam longitudinal beam and the steel pipe column are bolted together by the second connecting plate, and the connecting ends of the H-beam longitudinal beam and the steel pipe column are welded together.

[0030] Wet joints are set between multiple precast slabs, and concrete is poured at the wet joints to form a post-cast strip. The cast-in-place layer and the post-cast strip form an integral whole, and concrete is poured on its surface to form a slope-forming layer.

[0031] In the fabrication method of the prefabricated steel frame platform structure system provided in this application, the concrete material used for the slope-finding layer in the slab module is low-grade concrete, and the prefabricated slab is a prefabricated steel truss composite slab, which can eliminate the need for on-site formwork and reduce the structural self-weight. Similarly, the prefabricated slabs can also be prefabricated in the factory, eliminating the need for on-site formwork and achieving advantages such as modular manufacturing, simple on-site assembly, and good floor slab load-bearing performance. After laying the prefabricated slabs, a cast-in-place concrete layer is formed to improve the overall strength of the slab module. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a structural schematic diagram of the prefabricated steel frame platform structure system according to an embodiment of this application;

[0035] Figure 2 This is a schematic diagram and a front view of the platform column module according to an embodiment of this application;

[0036] Figure 3 This is a structural schematic diagram of the steel pipe column according to an embodiment of this application;

[0037] Figure 4 This is an exploded view of the steel pipe column according to an embodiment of this application;

[0038] Figure 5 The diagram shows a partial structural schematic and a cross-sectional view of the platform column module according to an embodiment of this application.

[0039] Figure 6 This is a structural schematic diagram of the steel beam module according to an embodiment of this application;

[0040] Figure 7 This is an enlarged schematic diagram of the H-shaped steel longitudinal beam according to an embodiment of this application;

[0041] Figure 8 This is an enlarged schematic diagram of the box girder and H-beam of an embodiment of this application;

[0042] Figure 9 The following are structural schematic diagrams and cross-sectional views of cantilever beams, edge-sealing beams, and H-beam secondary beams, etc., according to embodiments of this application;

[0043] Figure 10 This is a structural schematic diagram of the connection node between the platform column module and the steel beam module in an embodiment of this application;

[0044] Figure 11 This is a schematic diagram of the H-beam longitudinal beam connection node structure according to an embodiment of this application;

[0045] Figure 12 This is a structural schematic diagram of the connection node between the box girder and the H-beam according to an embodiment of this application;

[0046] Figure 13 This is a structural schematic diagram of the steel beam module and precast slab according to an embodiment of this application;

[0047] Figure 14 This is a structural schematic diagram of the steel beam module and composite plate according to an embodiment of this application;

[0048] Figure 15 This is a schematic diagram of the composite plate structure according to an embodiment of this application;

[0049] Figure 16 This is a schematic diagram of wet joints, studs, and rebar lap splices in an embodiment of this application;

[0050] Figure 17 This is a schematic diagram of the board module in an embodiment of this application;

[0051] Figure 18 This is a top view of the board module according to an embodiment of this application.

[0052] The reference numerals in the detailed embodiments are as follows:

[0053] 100. Steel beam module; 110. Longitudinal beam; 111. H-beam longitudinal beam; 111a. Short beam; 111b. Steel beam stiffening plate; 112. Box girder; 112a. Connection joint; 112b. Box girder plate; 120. Crossbeam; 121. H-beam crossbeam; 122. H-beam secondary beam; 130. Cantilever beam; 140. Edge sealing beam; 150. First connecting plate; 151. First bolt hole; 160. Second connecting plate; 161. Second bolt hole; 170. Stud; 200. Plate module; 210. Composite plate; 211. 211a. Precast slab; 211b. Steel truss; 212. Wet joint; 213. Cast-in-place layer; 220. Post-cast strip; 230. Surface reinforcement; 231. Slope layer; 300. Platform column module; 310. Concrete column; 311. Concrete column anchor bolt; 312. Support; 313. Concrete stud; 314. Circular stirrup; 315. Concrete column reinforcement; 320. Steel pipe column; 321. Steel pipe; 321a. Base plate; 321b. Steel plate; 322. Outer ring plate; 323. Steel column stiffening plate; 324. Connection end. Detailed Implementation

[0054] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0055] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0057] In the description of the embodiments of this application, "multiple" and "several" mean two or more (including two), unless otherwise explicitly specified.

[0058] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0059] According to some embodiments of this application, refer to Figures 1 to 18 As shown. The prefabricated steel frame platform structure system of this application embodiment includes a steel beam module 100, a slab module 200, and multiple platform column modules 300; the slab module 200 includes a composite slab 210, the composite slab 210 includes multiple precast slabs 211 and a cast-in-place layer 212, the multiple precast slabs 211 are laid on the steel beam module 100, and steel trusses 211a are set on the precast slabs 211 (see reference). Figure 13The cast-in-place layer 212 is set on the precast slab 211, and the steel truss 211a is embedded in the cast-in-place layer 212. The platform column module 300 includes a concrete column 310 and a steel pipe column 320. The bottom end of the concrete column 310 is fixedly connected to the ground. One end of the steel pipe column 320 is connected to the slab module 200, and the other end is connected to the concrete column 310. The steel beam module 100 is connected to the steel pipe column 320. The steel pipe column 320 includes a steel pipe 321. The lower end of the steel pipe 321 is inserted into the concrete column 310. The steel pipe 321 includes a base plate 321a. Concrete column anchor bolts 311 are pre-embedded in the concrete column 310, and the base plate 321a is connected to the concrete column anchor bolts 311.

[0060] The concrete column 310 is formed by on-site concrete casting. Concrete column anchor bolts 311 are pre-embedded at the top of the concrete column 310. On-site, the concrete column anchor bolts 311 are connected to the anchor bolts of the bottom plate 321a of the steel pipe 321 in the steel pipe column 320, which enables the on-site construction of the platform column module 300. In the prefabricated steel frame platform structure system of this application, the steel beam module 100 and the steel pipe column 320 are both processed in the factory and assembled on-site. This can improve the assembly speed, shorten the construction period, and ensure the quality of the project. Similarly, the precast slab 211 can also be prefabricated in the factory, which can save the work of on-site formwork, realize the advantages of modular manufacturing and simple on-site assembly, and good floor slab load-bearing performance. After laying the precast slab 211, the cast-in-place concrete is poured to form the cast-in-place layer 212 to improve the overall strength of the slab module 200.

[0061] In addition, refer to Figure 5 The concrete column 310 also includes supports 312, multiple concrete studs 313, annular stirrups 314, and concrete column reinforcement 315. The supports 312 are arranged along the extension direction of the concrete column 310. The multiple concrete studs 313 are arranged along the extension direction of the steel pipe 321, spaced apart around the circumference of the steel pipe 321, and embedded within the concrete column 310 during pouring, thus reinforcing the structure. The annular stirrups 314 are arranged around the concrete column anchors 311 to secure them. Furthermore, concrete column reinforcement 315 is also provided within the concrete column 310, which further improves its structural performance.

[0062] refer to Figure 3 , Figure 4 and Figure 10 In other embodiments, the steel pipe column 320 includes a plurality of outer ring plates 322 and a plurality of steel column stiffening plates 323. The plurality of outer ring plates 322 are spaced apart on the upper end of the steel pipe 321 along the extension direction of the steel pipe 321 to form a connection end 324 that matches the cross section of the steel beam module 100. The plurality of steel column stiffening plates 323 are spaced apart along the circumference of the steel pipe 321 and are connected to the outer ring plates 322.

[0063] Specifically, the outer ring plate 322 is prefabricated in the factory and, after being fitted onto the upper end of the steel pipe 321 on site, is further welded together to prevent relative sliding of the outer ring plate 322 on the steel pipe 321. Similarly, the steel column stiffening plate 323 is also welded to the outer ring plate 322 and the steel pipe 321 on site. Since the outer ring plate 322 and the steel column stiffening plate 323 can form a mesh structure around the steel pipe 321, the bending resistance and load-bearing capacity of the steel pipe column 320 can be enhanced. At the same time, the spacing between the outer ring plates 322 can be set according to the cross-sectional dimensions of the steel beam module 100 to form a connection end 324 that matches the cross-section of the steel beam module 100.

[0064] refer to Figure 6 The steel beam module 100 includes multiple longitudinal beams 110, multiple transverse beams 120, multiple cantilever beams 130, and multiple edge-sealing beams 140. The edge-sealing beams 140 are used to seal the edges of the entire structure. In some embodiments, when the overall structure is rectangular with four sides, there are four edge-sealing beams 140. The multiple longitudinal beams 110 and multiple transverse beams 120 are staggered; two edge-sealing beams 140 are each located outside the two outermost longitudinal beams 110 and are arranged in parallel. The cantilever beams 130 are located in the extension direction of the transverse beams 120, with one end of the cantilever beam 130 connected to the longitudinal beam 110 and the other end connected to the edge-sealing beam 140. The longitudinal beam 110 includes an H-beam longitudinal beam 111 and a box beam 112. In the extension direction of the longitudinal beam 110, two adjacent steel pipe columns 320 are connected by the H-beam longitudinal beam 111 or the box beam 112. The transverse beam 120 includes an H-beam transverse beam 121 and an H-beam secondary beam 122. In the extension direction of the transverse beam 120, the H-beam transverse beam 121 connects two adjacent steel pipe columns 320. The H-beam secondary beams 122 are arranged parallel to each other and spaced apart between the adjacent H-beam transverse beams 121. The two ends of the H-beam secondary beams 122 are respectively connected to the two adjacent longitudinal beams 110.

[0065] Specifically, regarding the selection of the longitudinal beam 110, when the span between two adjacent steel pipe columns 320 in the extension direction of the longitudinal beam 110 is large, the box girder 112 is preferred; when the span between two adjacent steel pipe columns 320 in the extension direction of the longitudinal beam 110 is small, the H-beam longitudinal beam 111 is preferred. This is because the box girder 112 has better torsional resistance in large-span structures, while the H-beam longitudinal beam 111 is lighter in weight for small-span structures, which can reduce manufacturing costs and weight. The specific selection also needs to consider factors such as calculated loads.

[0066] like Figures 6 to 12As shown, the cantilever beam 130 is welded to the edge-sealing beam 140; the H-beam longitudinal beam 111 includes a short beam 111a and a steel beam stiffening plate 111b. The short beam 111a is welded to the beam body of the H-beam longitudinal beam 111, and the steel beam stiffening plate 111b is connected to the short beam 111a and welded to the H-beam longitudinal beam 111; the steel beam module 100 also includes multiple first connecting plates 150 and multiple second connecting plates 160. Bolt holes are provided on both the short beam 111a and the H-beam secondary beam 122. The first connecting plate 150 is provided with first bolt holes 151 corresponding to the bolt holes. The bolt passes through the first bolt holes 151 and is threaded. The first bolt hole 151 is used to fix the first connecting plate 150, the short beam 111a and the H-beam secondary beam 122. At the same time, the beam ends of the short beam 111a and the H-beam secondary beam 122 are welded. Bolt holes are provided on both sides of the end where the H-beam longitudinal beam 111 and the steel pipe column 320 are connected. The second connecting plate 160 is provided with a second bolt hole 161 corresponding to the bolt hole. The bolt passes through the second bolt hole 161 and is threaded to the second bolt hole 161 to fix the second connecting plate 160, the H-beam longitudinal beam 111 and the steel pipe column 320. At the same time, the connection end 324 of the H-beam longitudinal beam 111 and the steel pipe column 320 is welded.

[0067] The cantilever beam 130 is welded to the edge-sealing beam 140; however, for the connection between the longitudinal beam 110, which needs to bear more load, and the transverse beam 120, a mixed bolt-weld connection is used. Specifically, a short beam 111a is welded to the body of the H-beam longitudinal beam 111, and the steel beam stiffening plate 111b is connected to the short beam 111a and welded to the H-beam longitudinal beam 111. Because the cross-section of the transverse beam 120 is smaller than the cross-section of the H-beam longitudinal beam 111, the short beam 111a can be easily connected to the H-beam longitudinal beam 111. A first bolt hole 151 is provided on the first connecting plate 150, and the short beam 111a and the H-beam secondary beam 122 are connected through the first connecting plate 150 using high-strength bolts. Simultaneously, the ends of the short beam 111a and the H-beam secondary beam 122 are welded together, with welding also occurring at the connection point of the webs of the short beam 111a and the H-beam secondary beam 122. This improves the shear resistance of the short beam 111a and the H-beam secondary beam 122, further strengthening the connection effect. Similarly, since the box girder 112 is also a type of longitudinal beam 110, short beams 111a can also be welded to the body of the box girder 112 and connected to the H-beam secondary beam 122 in the same bolted-welded manner. However, it should be noted that because the cross-sections of the box girder 112 and the H-beam longitudinal beam 111 are different, the applicable short beams 111a are also different. Specifically, the short beam 111a welded to the body of the box girder 112 is a variable cross-section short beam, while the short beam 111a welded to the body of the H-beam longitudinal beam 111 is an I-beam short beam.

[0068] In addition, the second connecting plate 160 is provided with second bolt holes 161. Due to the large cross-sectional areas of the H-beam longitudinal beam 111 and the steel pipe column 320, using only the second connecting plate 160 for connection would not achieve a satisfactory effect. Therefore, high-strength bolts are used to connect both sides of the connection end 324 of the H-beam longitudinal beam 111 and the steel pipe column 320 through the second connecting plate 160. Simultaneously, the connection end 324 of the H-beam longitudinal beam 111 and the steel pipe column 320 is welded. This bolted and welded hybrid construction method satisfies the convenience of on-site bolt connection while adding a welding connection method, further consolidating the connection effect and improving the strength of the beam and column at the joint.

[0069] It should be noted that the second connecting plate 160 includes three sizes, used for connecting the H-beam longitudinal beam 111, box beam 112, and H-beam transverse beam 121 respectively. Because the cross-sectional areas of the H-beam longitudinal beam 111, box beam 112, and H-beam transverse beam 121 are different, the corresponding sizes of the second connecting plate 160 and the number of second bolt holes 161 on the second connecting plate 160 are different. Generally, the larger the cross-sectional area of ​​the required connecting beam, the larger the size of the selected second connecting plate 160, and the more second bolt holes 161 are required on the second connecting plate 160.

[0070] In some embodiments, reference Figures 13 to 16 A wet joint 211b is provided between multiple precast slabs 211. Studs 170 are installed on the steel beam module 100 at the wet joint 211b. Steel trusses 211a in the precast slabs 211 extend out of the precast slabs 211, and the studs 170 are staggered with the steel trusses 211a of the precast slabs 211. Multiple precast slabs 211b are provided between multiple precast slabs 211, and multiple embedded longitudinal bars are provided along the extension direction of the wet joint 211b. The slab module 200 includes a post-cast strip 220, which is located within the wet joint 211b and is made of non-shrink concrete. Surface reinforcement 230 is laid on the cast-in-place layer 212 and the post-cast strip 220. A slope-finding layer 231 is provided on the surface reinforcement 230, and the surface reinforcement 230 is embedded within the slope-finding layer 231.

[0071] By setting wet joints 211b between multiple precast slabs 211, the overall area of ​​the slab module 200 can be divided into multiple sections, each corresponding to a precast slab 211. The size of the precast slab 211 can be selected according to the actual working conditions, thus facilitating prefabrication in the factory. Studs 170 are installed on the steel beam module 100 at the wet joint 211b to limit the movement of the precast slab 211, preventing it from shifting and improving the connection performance between the slab module 200 and the steel beam module 100. The studs 170 are staggered with the steel truss 211a of the precast slab 211. The steel truss 211a extends out of the precast slab 211. When concrete is poured in the wet joint 211b to form a post-cast strip 220, the post-cast strip 220 and the steel truss 211a extending out of the precast slab 211 interlock, forming a tighter whole, which enhances the integrity and strength of the slab module. Meanwhile, multiple embedded longitudinal reinforcement bars are set along the extension direction of the wet joint 211b to enhance the bending strength of the wet joint. The cast-in-place layer 212 is formed by pouring concrete on the precast slab 211 in situ, and the cast-in-place layer 212, the precast slab 211, and the post-cast strip 220 form a whole. However, since the three are actually composed of different structures, surface reinforcement 230 is laid on the cast-in-place layer 212 and the post-cast strip 220, and low-grade concrete is poured on the surface reinforcement 230 to form a slope-finding layer 231. The surface reinforcement 230 is embedded in the slope-finding layer 231. The slope-finding layer 231 can form a tight whole with the cast-in-place layer 212, the precast slab 211, and the post-cast strip 220, enhancing the overall integrity, increasing the strength, and also playing a leveling role.

[0072] refer to Figures 1 to 18 This application also provides a method for fabricating a prefabricated steel frame platform structure system, including the following steps:

[0073] Constructing platform column module 300: Concrete column 310 is formed by pouring concrete on site. Concrete column 310 is connected to the ground. One end of steel pipe column 320 is connected to concrete column 310.

[0074] Connecting steel beam module 100: Steel beam module 100 is connected to steel pipe column 320;

[0075] Slab module 200: Slab module 200 includes composite slab 210, composite slab 210 includes multiple precast slabs 211 and cast-in-place layer 212, precast slabs 211 are laid on steel beam module 100, and cast-in-place layer 212 is formed by pouring post-cast concrete on precast slabs 211.

[0076] The concrete column 310 is formed by on-site concrete casting. Concrete column anchor bolts 311 are pre-embedded at the top of the concrete column 310. On-site, the concrete column anchor bolts 311 are connected to the anchor bolts of the bottom plate 321a of the steel pipe 321 in the steel pipe column 320, which enables the on-site construction of the platform column module 300. The steel beam module 100 and the steel pipe column 320 are both fabricated in the factory and assembled on-site. This improves assembly speed, shortens the construction period, and ensures project quality. Similarly, the precast slab 211 can also be prefabricated in the factory, eliminating the need for on-site formwork and achieving advantages such as modular manufacturing, simple on-site assembly, and good floor slab load-bearing performance. After laying the precast slab 211, a cast-in-place layer 212 is formed by pouring concrete to improve the overall strength of the slab module 200.

[0077] In addition, the steel pipe column 320 includes a steel pipe 321, the lower end of which is inserted into the concrete column 310. The steel pipe 321 includes a base plate 321a. Concrete column anchor bolts 311 are pre-embedded in the concrete column 310 to connect the base plate 321a to the concrete column 310. After concrete is poured into the steel pipe 321, it is sealed with a steel plate 321b. The cantilever beam 130 is welded to the edge beam 140. The short beam 111a is welded to the beam body of the H-shaped steel longitudinal beam 111. The steel beam stiffening plate 111b is connected to the short beam 111a and welded to the H-shaped steel longitudinal beam 111. The short beam 111a and the H-shaped steel secondary beam 122 are connected by a first connecting plate. 150 bolts are used for connection, and the beam ends of the short beam 111a and the H-beam secondary beam 122 are welded. The connection ends 324 of the H-beam longitudinal beam 111 and the steel pipe column 320 are connected by bolts through the second connecting plate 160, and the connection ends 324 of the H-beam longitudinal beam 111 and the steel pipe column 320 are welded. Wet joints 211b are set between multiple precast slabs 211, and concrete is poured at the wet joints 211b to form a post-cast strip 220. Surface reinforcement 230 is laid on the cast-in-place layer 212 and the post-cast strip 220, and concrete is poured on the surface of the surface reinforcement 230 to form a slope-finding layer 231. The surface reinforcement 230 is embedded in the slope-finding layer 231.

[0078] The bolted and welded hybrid construction method not only satisfies the convenience of on-site bolted connections but also adds welding connections, further consolidating the connection effect and improving the strength of beams and columns at the joints. By setting wet joints 211b between multiple precast slabs 211, the overall area of ​​the slab module 200 can be divided into multiple sections, facilitating prefabrication in the factory. Studs 170 are installed on the steel beam module 100 at the wet joint 211b to limit the movement of the precast slabs 211. The studs 170 are staggered with the steel trusses 211a of the precast slabs 211, which extend beyond the slabs. When concrete is poured in the wet joint 211b to form a post-cast strip 220, the post-cast strip 220 and the steel trusses 211a extending from the precast slabs 211 interlock, forming a tighter whole and enhancing the integrity and strength of the slab module. Meanwhile, multiple embedded longitudinal reinforcement bars are installed along the extension direction of the wet joint 211b to enhance the bending strength of the wet joint. Surface reinforcement 230 is laid on the cast-in-place layer 212 and the post-cast strip 220. Low-grade concrete is poured on the surface of the surface reinforcement 230 to form a slope-finding layer 231, with the surface reinforcement 230 embedded within the slope-finding layer 231. The slope-finding layer 231 forms a tight integral with the composite slab 210 and the post-cast strip 220, enhancing overall integrity and strength, while also serving a leveling function.

[0079] The content of this application is not limited to the embodiments listed herein. Any equivalent modifications made by those skilled in the art to the technical solutions of this application after reading this specification are covered by the claims of this application.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A prefabricated steel frame platform structure system, characterized in that, include: Steel beam module (100); A slab module (200) includes a composite slab (210), which includes multiple precast slabs (211) and a cast-in-place layer (212). The multiple precast slabs (211) are laid on the steel beam module (100). A steel truss (211a) is provided on the precast slabs (211). The cast-in-place layer (212) is provided on the precast slabs (211), and the steel truss (211a) is embedded in the cast-in-place layer (212). Multiple platform column modules (300), each platform column module (300) includes a concrete column (310) and a steel pipe column (320). The bottom end of the concrete column (310) is fixedly connected to the ground. One end of the steel pipe column (320) is connected to the slab module (200), and the other end is connected to the concrete column (310). The steel beam module (100) is connected to the steel pipe column (320). The steel pipe column (320) includes a steel pipe (321), the lower end of which is inserted into the concrete column (310). The steel pipe (321) includes a base plate (321a). Concrete column anchor bolts (311) are pre-embedded in the concrete column (310), and the base plate (321a) is connected to the concrete column anchor bolts (311). The steel pipe column (320) includes multiple outer ring plates (322) and multiple steel column stiffening plates (323). The multiple outer ring plates (322) are spaced apart on the upper end of the steel pipe (321) along the extension direction of the steel pipe (321) to form a connection end (324) that matches the cross section of the steel beam module (100). The multiple steel column stiffening plates (323) are spaced apart along the circumference of the steel pipe (321) and connected to the outer ring plates (322). The steel beam module (100) includes multiple longitudinal beams (110), multiple transverse beams (120), multiple cantilever beams (130) and multiple edge-sealing beams (140), with the multiple longitudinal beams (110) and the multiple transverse beams (120) being connected in an alternating manner; Multiple edge sealing beams (140) are each disposed outside the two outermost longitudinal beams (110) and the multiple edge sealing beams (140) are arranged in parallel. The cantilever beam (130) is disposed in the extension direction of the cross beam (120). One end of the cantilever beam (130) is connected to the longitudinal beam (110) and the other end is connected to the edge sealing beam (140). The longitudinal beam (110) includes an H-beam (111) and a box beam (112). In the extension direction of the longitudinal beam (110), two adjacent steel pipe columns (320) are connected by the H-beam (111) or the box beam (112). The crossbeam (120) includes an H-beam (121) and an H-beam secondary beam (122). In the extension direction of the crossbeam (120), the H-beam (121) connects two adjacent steel pipe columns (320). The H-beam secondary beams (122) are arranged parallel to and spaced apart between adjacent H-beams (121). The two ends of the H-beam secondary beams (122) are respectively connected to two adjacent longitudinal beams (110). Both the longitudinal beam (110) and the transverse beam (120) are connected to the connecting end (324) so ​​that the steel beam module (100) forms a platform structure between the plurality of steel pipe columns (320).

2. The prefabricated steel frame platform structure system according to claim 1, characterized in that, The cantilever beam (130) is welded to the edge sealing beam (140); The H-beam longitudinal beam (111) includes a short beam (111a) and a steel beam stiffening plate (111b). The short beam (111a) is welded to the beam body of the H-beam longitudinal beam (111), and the steel beam stiffening plate (111b) is connected to the short beam (111a) and welded to the H-beam longitudinal beam (111). The steel beam module (100) also includes a plurality of first connecting plates (150) and a plurality of second connecting plates (160). The short beam (111a) and the H-beam secondary beam (122) are provided with bolt holes. The first connecting plate (150) is provided with a first bolt hole (151) corresponding to the bolt hole. The bolt passes through the first bolt hole (151) and is threaded to the first bolt hole (151) to fix the first connecting plate (150), the short beam (111a) and the H-beam secondary beam (122). At the same time, the beam ends of the short beam (111a) and the H-beam secondary beam (122) are welded. Bolt holes are provided on both sides of the end where the H-shaped steel longitudinal beam (111) and the steel pipe column (320) are connected. The second connecting plate (160) is provided with a second bolt hole (161) corresponding to the bolt hole. The bolt passes through the second bolt hole (161) and is threaded to the second bolt hole (161) to fix the second connecting plate (160), the H-shaped steel longitudinal beam (111) and the steel pipe column (320). At the same time, the connecting end (324) of the H-shaped steel longitudinal beam (111) and the steel pipe column (320) is welded.

3. The prefabricated steel frame platform structure system according to claim 2, characterized in that, A wet joint (211b) is provided between the plurality of precast slabs (211), and a stud (170) is provided on the steel beam module (100) at the wet joint (211b). The steel truss (211a) in the precast slab (211) extends out of the precast slab (211), and the studs (170) are staggered with the steel truss (211a) of the precast slab (211), and / or, A wet joint (211b) is provided between multiple precast slabs (211), and multiple embedded longitudinal bars are provided along the extension direction of the wet joint (211b).

4. The prefabricated steel frame platform structure system according to claim 3, characterized in that, The slab module (200) includes a post-cast strip (220), which is located within the wet joint (211b). Surface reinforcement (230) is laid on the cast-in-place layer (212) and the post-cast strip (220). A slope-finding layer (231) is provided on the surface reinforcement (230), and the surface reinforcement (230) is embedded in the slope-finding layer (231).

5. A method for processing and manufacturing a prefabricated steel frame platform structure system according to any one of claims 2-4, characterized in that, Includes the following steps: Constructing platform column modules (300): Concrete columns (310) are formed by pouring concrete on site. The concrete columns (310) are connected to the ground, and one end of the steel pipe column (320) is connected to the concrete column (310). Connecting steel beam module (100): The steel beam module (100) is connected to the steel pipe column (320); Laying plate module (200): The plate module (200) includes a composite plate (210), which includes a plurality of precast plates (211) and a cast-in-place layer (212). The precast plates (211) are laid on the steel beam module (100), and the cast-in-place layer (212) is formed by pouring post-cast concrete on the precast plates (211).

6. The processing and manufacturing method of the prefabricated steel frame platform structure system according to claim 5, characterized in that, The steel pipe column (320) includes a steel pipe (321), the lower end of which is inserted into the concrete column (310). The steel pipe (321) includes a base plate (321a). Concrete column anchor bolts (311) are pre-embedded in the concrete column (310) to connect the base plate (321a) to the concrete column (310). After concrete is poured into the steel pipe (321), it is sealed with a steel plate (321b); The cantilever beam (130) is welded to the edge sealing beam (140), the short beam (111a) is welded to the beam body of the H-shaped steel longitudinal beam (111), the steel beam stiffening plate (111b) is connected to the short beam (111a) and welded to the H-shaped steel longitudinal beam (111); the short beam (111a) and the H-shaped steel secondary beam (122) are bolted together by the first connecting plate (150), and the beam ends of the short beam (111a) and the H-shaped steel secondary beam (122) are welded together; the connecting ends (324) of the H-shaped steel longitudinal beam (111) and the steel pipe column (320) are bolted together by the second connecting plate (160), and the connecting ends (324) of the H-shaped steel longitudinal beam (111) and the steel pipe column (320) are welded together; A wet joint (211b) is provided between the precast slabs (211), and concrete is poured at the wet joint (211b) to form a post-cast strip (220). A surface layer of steel reinforcement (230) is laid on the cast-in-place layer (212) and the post-cast strip (220), and concrete is poured on the surface of the surface layer of steel reinforcement (230) to form a slope-finding layer (231). The surface layer of steel reinforcement (230) is embedded in the slope-finding layer (231).

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