Prefabricated outer bag concrete shaped column - T shaped steel honeycomb beam structure and installation

Abstract

The application discloses an assembled outer-wrapped concrete type steel special-shaped column-T-shaped steel cellular beam structure and installation, which comprises an assembled outer-wrapped concrete type steel special-shaped column module, an outer-wrapped concrete T-shaped steel cellular beam module, a composite floor module and a foundation beam column module.The assembled outer-wrapped concrete type steel special-shaped column module has L-shaped, T-shaped and cross-shaped outer-wrapped concrete type steel special-shaped columns, sleeve connecting plates are arranged between the webs, sleeves are arranged outside the sleeve connecting plates and the flanges, and beam column locking units and stiffening ribs are arranged outside the flanges at the lower side of the sleeve connecting plates.The outer-wrapped concrete T-shaped steel cellular beam module has a prefabricated outer-wrapped concrete T-shaped steel cellular beam and screw-threaded steel bars.The composite floor module has a composite board, a rear laid steel mesh and cast-in-situ floor concrete.The foundation beam column module has an independent foundation, an end plate and a foundation beam connecting section.The application has the advantages of reducing the self weight of the beam, facilitating pipeline layout, increasing the building clearance, having good stress and anti-seismic performance, simple structure, high industrialization level, low carbon emission, short construction period and the like.

Description

Technical Field

[0001] This invention relates to the field of structural engineering technology, and in particular to a prefabricated concrete-encased steel irregular column-T-shaped steel cellular beam structure and its installation. Background Technology

[0002] Prefabricated buildings refer to a structural form in which all or part of the building components are prefabricated in a factory, and then assembled on the construction site using reliable connection methods. Green and new building materials will inevitably be the future direction of development, and steel structures and prefabricated buildings will become the future direction of the construction industry.

[0003] However, traditional prefabricated steel structures suffer from stability issues in beam and column components, typically requiring rational structural design and rigorous calculations to improve structural stability. Furthermore, steel structures present significant fire and corrosion challenges, necessitating substantial investments in applying fire-retardant and anti-corrosion coatings to the steel surfaces, as well as regular inspections and maintenance, to ensure the durability of steel structure buildings.

[0004] On the other hand, traditional frame structures often have protruding column ribs, which not only affect aesthetics but also reduce interior space and hinder furniture placement and decoration. Although the protruding parts of the column ribs can be concealed or modified with decorative materials and techniques, the problem cannot be fundamentally solved. Meanwhile, in traditional frame systems, pipeline installations often occupy a significant portion of the clearance height.

[0005] Therefore, in response to the problems existing in the prior art, the designer of this case, based on years of experience in this industry, actively researched and improved the technology, resulting in the present invention of a prefabricated external concrete-encased steel irregular column-T-shaped steel cellular beam structure and its installation. Summary of the Invention

[0006] The first objective of this invention is to address the shortcomings of existing technologies, such as the stability problems of beam and column components in traditional prefabricated steel structures, the prominent fire and corrosion problems of steel structures, the problem of protruding column ribs in traditional frame structures which affect aesthetics, reduce indoor space, hinder furniture arrangement and decoration, and the fact that pipeline layout often occupies a large amount of headroom. This invention provides a prefabricated concrete-encased steel irregular column-T-shaped steel honeycomb beam structure.

[0007] The second objective of this invention is to address the shortcomings of existing technologies, such as the stability issues of beam and column components in traditional prefabricated steel structures, the prominent fire and corrosion problems of steel structures, the problem of protruding column ribs in traditional frame structures which affect aesthetics, reduce interior space, hinder furniture arrangement and decoration, and the fact that pipeline layout often occupies a large amount of headroom. This invention provides an installation method for a prefabricated concrete-encased steel irregular column-T-shaped steel honeycomb beam structure.

[0008] To achieve the first objective of this invention, this invention provides a prefabricated concrete-encased steel irregular column-T-shaped steel cellular beam structure, wherein the prefabricated concrete-encased steel irregular column-T-shaped steel cellular beam structure comprises:

[0009] The prefabricated concrete-clad steel irregular column module comprises L-shaped, T-shaped, and cross-shaped concrete-clad steel irregular columns that respectively constitute corner columns, edge columns, and inner columns of the structural system. Sleeve connecting plates are installed between the webs of each steel irregular column at the beam-column joint. Sleeves are spaced apart on the outer flanges of the sleeve connecting plates and adjacent steel irregular columns. A beam-column locking unit is installed on the outer flange of the steel irregular column below the sleeve connecting plate. The beam-column locking unit further includes longitudinally arranged clamping plates and T-shaped connectors. Stiffening ribs of the same height as the T-shaped connectors are provided at the web of the steel irregular column between the beam-column locking unit and the web. The webs of the steel irregular columns are bolted together via the web connecting plates. The flanges of the steel irregular columns are butt-welded together via weld bevels. Longitudinal reinforcements are symmetrically arranged on the outer flanges of the steel irregular columns, except at the beam-column joints, and fixed by stirrups.

[0010] The concrete-clad T-shaped steel cellular beam module comprises L-shaped concrete-clad T-shaped steel cellular beams and T-shaped concrete-clad T-shaped steel cellular beams that respectively constitute the side beams and inner beams of the structural system. Each of them has a precast concrete-clad T-shaped steel cellular beam connected to the steel profile column through a beam-column locking unit and threaded steel bars connected to the sleeve connecting plate through a sleeve. The precast concrete-clad T-shaped steel cellular beam further includes a T-shaped cellular steel, a through U-shaped connecting bar welded to the top surface of the web of the T-shaped cellular steel, a U-shaped steel cage sleeved around the T-shaped cellular steel, and an outer concrete covering the T-shaped cellular steel and the U-shaped steel cage.

[0011] The composite floor slab module comprises a precast composite slab set on the outer concrete of a precast concrete-clad T-shaped steel cellular beam, a post-laid steel mesh set on the precast composite slab and laid through the through U-shaped connecting bars, and a cast-in-place floor slab concrete with the precast composite slab as the bottom formwork and the post-laid steel mesh wrapped around it.

[0012] The foundation beam-column module has an independent foundation with pre-embedded anchor bolts, an end plate set at the bottom of the steel irregular column and fixed to the independent foundation with bolts, and a foundation beam connection section for connecting with the foundation beam and protruding from the outer surface of the prefabricated concrete-encased steel irregular column module.

[0013] Optionally, during on-site assembly, except for beam-column joints within 100mm below the stiffening rib and column-column joints within 80mm from the end of the irregular steel column, an outer concrete casing may be poured.

[0014] Optionally, the column nodes of the steel irregular column are all located at the column inflection point, and the prefabricated concrete-encased steel irregular column module can span multiple floors, with corner columns, middle columns and side columns being spliced ​​in a staggered manner.

[0015] Optionally, the stiffening ribs may further include L-shaped stiffening ribs used when forming an L-shaped accommodating space between the webs of the beam-column locking unit and rectangular stiffening ribs used when forming a rectangular accommodating space between the webs of the beam-column locking unit.

[0016] Optionally, the thickness of the sleeve connecting plate is the same as the thickness of the flange of the profiled steel column.

[0017] Optionally, the web of the T-shaped honeycomb steel is provided with honeycomb holes at intervals near the bottom of the precast composite slab.

[0018] Optionally, the honeycomb holes are formed by laser integral cutting or by welding after cutting.

[0019] Optionally, the shape of the honeycomb holes is at least one of circular, rectangular, and hexagonal, or a combination thereof.

[0020] Optionally, the bolt is a torsion-shear type high-strength bolt or a large hexagonal high-strength bolt, and the outer concrete is at least one of ordinary concrete, lightweight aggregate concrete, ceramsite concrete, steel slag concrete, steel fiber concrete, carbon fiber concrete, and high-strength concrete.

[0021] Optionally, during on-site assembly, the outer concrete of the precast concrete-clad T-shaped steel cellular beam is poured along the entire length of the beam, except for the area within 350mm at the end of the T-shaped cellular steel.

[0022] Optionally, longitudinal reinforcement bars are symmetrically arranged on the outer side of the flange of the steel irregular column except for the beam-column joint, and stirrups are tied at equal intervals along the column length on the outer side of the longitudinal reinforcement bars, thereby forming the steel skeleton of the prefabricated concrete-encased steel irregular column module.

[0023] Optionally, the precast composite slab further includes a steel mesh formed by longitudinal bars and steel trusses, and precast concrete wrapping the steel mesh.

[0024] Optionally, the composite slab is a cast-in-place floor slab or a composite floor slab made of profiled steel sheets.

[0025] Optionally, a copper plate is provided between the flange of the T-shaped honeycomb steel and the T-shaped connector.

[0026] Optionally, the width of the foundation beam connection section is the same as the width of the flange of the steel profile column.

[0027] Optionally, the length of the foundation beam connecting section protruding from the outer surface of the prefabricated concrete-encased steel irregular column module shall not be less than 500mm.

[0028] To achieve the second objective of this invention, the present invention provides an installation method for a prefabricated concrete-encased steel irregular column-T-shaped steel cellular beam structure. The installation of the prefabricated concrete-encased steel irregular column-T-shaped steel cellular beam structure includes:

[0029] Step S1: The prefabricated composite slabs and foundation beam-column modules of the prefabricated concrete-clad steel irregular column modules, concrete-clad T-shaped steel honeycomb beam modules, and composite floor slab modules are prefabricated in the factory and then hoisted to the construction site.

[0030] Step S2: Secure the end plate of the prefabricated concrete-encased steel irregular column module to the independent foundation of the foundation beam and column module using pre-embedded anchor bolts and bolts.

[0031] Execute step S3: hoist the foundation beam to the foundation beam-column module and weld the foundation beam to the foundation beam connection section;

[0032] Step S4: The precast concrete-clad T-shaped steel honeycomb beam is hoisted to the prefabricated concrete-clad steel irregular column module and connected by the beam-column locking unit. The web and flange of the T-shaped honeycomb steel are inserted into the T-shaped space formed by the longitudinally arranged clamping plates and T-shaped connectors. A copper plate is placed between the flange of the T-shaped honeycomb steel and the T-shaped connectors. Then, the T-shaped honeycomb steel, the copper plate, and the clamping plates and T-shaped connectors of the beam-column locking unit are locked by bolts.

[0033] Step S5: Hoist the precast composite slab onto the concrete outer layer of the precast concrete-clad T-shaped steel cellular beam, fasten the threaded steel bars to the sleeve, and lay the steel mesh on the precast composite slab after passing through the through-through U-shaped connecting bars. Then, using the precast composite slab as the bottom formwork, pour the cast-in-place floor slab concrete wrapped with the steel mesh.

[0034] Step S6: The web of the steel irregular column is bolted together by the web connecting plate, the flange of the steel irregular column is butt welded together by the weld bevel, and the joint is encased in concrete.

[0035] In summary, the prefabricated concrete-encased steel irregular column-T-shaped steel honeycomb beam structure of this invention not only reduces the self-weight of the beams, facilitates pipeline layout, reduces beam cross-section, and increases building clearance, but also possesses excellent stress and seismic performance, simple node construction, high level of industrialization, and short construction period. It is more suitable for the rapid development of my country's construction industry, suitable for industrialized production, can improve the level of the construction industry, realize the modernization of the construction industry, and has a positive promoting effect on the prefabricated building industry, thus having far-reaching significance. Attached Figure Description

[0036] Figure 1 The figure shown is a three-dimensional structural diagram of the prefabricated concrete-encased steel irregular column-T-shaped steel honeycomb beam of the present invention.

[0037] Figure 2(a) shows a top view of the prefabricated concrete-encased steel irregular column-T-shaped steel cellular beam structure;

[0038] Figure 2(b) shows the cross-sectional view of the prefabricated concrete-encased steel irregular column-T-shaped steel cellular beam structure;

[0039] Figures 3(a) to 3(c) show the beam-column joint structure and reinforcement diagram of the prefabricated concrete-encased steel irregular column module;

[0040] Figures 4(a) to 4(c) show the reinforcement diagrams of prefabricated steel-framed columns with external concrete cladding.

[0041] Figures 5(a) to 5(c) show schematic diagrams of the column joint structure of the prefabricated concrete-encased steel irregular column module;

[0042] Figure 6 The diagram shown is a three-dimensional structure of a T-shaped steel honeycomb beam encased in concrete.

[0043] Figure 7 The diagram shown is a schematic diagram of the exploded structure of a precast concrete-encased T-shaped steel cellular beam.

[0044] Figure 8 The diagram shown is a schematic of the prefabricated composite slab structure of the composite floor slab module.

[0045] Figure 9 The diagram shown is a schematic of the composite floor slab module structure.

[0046] Figure 10 The diagram shown is a schematic of the basic beam-column module structure.

[0047] Figure 11 The image shows the assembly diagram of the prefabricated steel irregular column-T-shaped steel cellular beam with external concrete encapsulation. Detailed Implementation

[0048] To explain in detail the technical content, structural features, objectives, and effects of this invention, the following will provide a detailed description in conjunction with embodiments and accompanying drawings.

[0049] Please see Figures 1-10 , Figure 1The figures shown are a three-dimensional structural diagram of the prefabricated concrete-clad steel irregular column-T-shaped steel cellular beam of the present invention. Figure 2(a) shows a top view of the prefabricated concrete-clad steel irregular column-T-shaped steel cellular beam structure. Figure 2(b) shows a cross-sectional view of the prefabricated concrete-clad steel irregular column-T-shaped steel cellular beam structure. Figures 3(a) to 3(c) show the beam-column joint construction and reinforcement diagram of the prefabricated concrete-clad steel irregular column module. Figures 4(a) to 4(c) show the reinforcement diagram of the prefabricated concrete-clad steel irregular column. Figures 5(a) to 5(c) show schematic diagrams of the column-column joint construction of the prefabricated concrete-clad steel irregular column module. Figure 6 The diagram shows a three-dimensional structure of a precast concrete-encased T-shaped steel cellular beam. Figure 7 The image shown is an exploded view of a precast concrete-clad T-shaped steel cellular beam. Figure 8 The diagram shows a prefabricated composite slab structure of a composite floor slab module. Figure 9 The diagram shown is a schematic of the composite floor slab module structure. Figure 10 The diagram shown is a schematic of the basic beam-column module structure. Figure 11 The diagram shows the assembly drawing of a prefabricated concrete-encased steel irregular column-T-shaped steel cellular beam structure. The prefabricated concrete-encased steel irregular column-T-shaped steel cellular beam structure includes:

[0050] A prefabricated concrete-clad steel irregular column module 1 includes L-shaped concrete-clad steel irregular columns 11, T-shaped concrete-clad steel irregular columns 12, and cross-shaped concrete-clad steel irregular columns 13, which respectively constitute corner columns, side columns, and inner columns of the structural system. A sleeve connecting plate 14 is provided between the web plates 101 at the beam-column joints of each steel irregular column 10. Sleeves 141 are spaced apart on the sleeve connecting plate 14 and the outer side of the flange 102 of adjacent steel irregular columns 10. A beam-column locking unit is provided on the outer side of the flange 102 of the steel irregular column 10 below the sleeve connecting plate 14. The beam-column locking unit 15 further includes a clamping plate 151 and a T-shaped connector 152 arranged vertically in space. A stiffening rib 16 of the same height as the T-shaped connector 152 is provided at the web 101 of the steel irregular column 10 between the beam-column locking unit 15. The web 101 of the steel irregular column 10 is locked and connected by bolts 104 through the web connecting plate 103. The flange 102 of the steel irregular column 10 is butt-welded through the weld bevel 105. Longitudinal reinforcement 17 is symmetrically arranged on the outer side of the flange 102 of the steel irregular column 10 except for the beam-column node, and fixed by stirrups 18.

[0051] The concrete-clad T-shaped steel cellular beam module 2 has an L-shaped concrete-clad T-shaped steel cellular beam constituting the side beams of the structural system and a T-shaped concrete-clad T-shaped steel cellular beam constituting the inner beams of the structural system. Both have a precast concrete-clad T-shaped steel cellular beam 21 connected to the steel profile column 10 through a beam-column locking unit 15 and a threaded steel bar 22 connected to the sleeve connecting plate 14 through a sleeve 141. The precast concrete-clad T-shaped steel cellular beam 21 further includes a T-shaped cellular steel 211, a through U-shaped connecting bar 212 welded to the top surface of the web of the T-shaped cellular steel 211, a U-shaped steel cage 213 sleeved around the T-shaped cellular steel 211, and a concrete cladding 214 that wraps around the T-shaped cellular steel 211 and the U-shaped steel cage 213.

[0052] The composite floor slab module 3 has a precast composite slab 31 set on the outer concrete 214 of the precast outer concrete T-shaped steel honeycomb beam 21, a post-laid steel mesh 32 set on the precast composite slab 31 and laid through the through U-shaped connecting bar 212, and a cast-in-place floor slab concrete 33 with the precast composite slab 31 as the bottom formwork and wrapped with the post-laid steel mesh 32.

[0053] The foundation beam-column module 4 has an independent foundation 41 with pre-embedded anchor bolts 40, an end plate 42 set at the bottom column end of the steel irregular column 10 and fixed to the independent foundation 41 by bolts 104, and a foundation beam connecting section 44 for connecting with the foundation beam 43 and protruding from the outer surface of the prefabricated concrete-encased steel irregular column module 1.

[0054] Please refer to Figures 3(a) to 3(c), 4(a) to 4(c), and 5(a) to 5(c). The web 101 of the steel irregular column 10 is fastened to the web connecting plate 103 by bolts 104. The flange 102 of the steel irregular column 10 is butt-welded to the flange by weld bevel 105. Longitudinal reinforcement 17 is symmetrically arranged on the outer side of the flange 102 of the steel irregular column 10 except for the beam-column joint. Stirrups 18 are tied at equal intervals along the column length on the outer side of the longitudinal reinforcement 17, thereby forming the steel skeleton of the prefabricated concrete-encased steel irregular column module 1. As a specific implementation, in order to ensure the construction space during on-site assembly of the components, concrete 214 is poured outside the beam-column joints within 100mm below the sleeve connecting plate 14 to the stiffening rib 16 and the column-column joints within 80mm from the column end of the steel irregular column 10. In this invention, the column nodes of the prefabricated concrete-clad steel irregular column module 1 are all located at the column inflection point. The prefabricated concrete-clad steel irregular column module 1 can span multiple floors, and the corner columns, middle columns, and edge columns are spliced ​​in a staggered manner. To ensure the overall load-bearing performance at the nodes of the steel irregular column 10, the steel irregular column 10 is provided with stiffening ribs 16 at the same height as the T-shaped connectors 152 at the web plate 101 of the beam-column locking unit 15. As will be readily understood by those skilled in the art, when an L-shaped space is formed between the web plates 101 of the beam-column locking unit 15, the stiffening ribs 16 used are L-shaped stiffening ribs; when a rectangular accommodating space is formed between the web plates 101 of the beam-column locking unit 15, the stiffening ribs 16 used are rectangular stiffening ribs.

[0055] Please continue reading. Figure 6 Referring to Figures 3(a) to 3(c), to ensure the quantity of threaded steel bars 22 in the outer concrete T-shaped steel cellular beam module 2 and the overall stress performance of the nodes, sleeve connecting plates 14 and stiffening ribs 16 are provided at corresponding positions inside the steel irregular column 10, and sleeves 141 are provided at intervals on the outer sides of the sleeve connecting plates 14 and the flanges 102 of adjacent steel irregular columns 10. Preferably, the thickness of the sleeve connecting plate 14 is the same as the thickness of the flanges 102 of the steel irregular column 10, but the thickness of the sleeve connecting plate 14 can also be increased or decreased according to design requirements.

[0056] Clearly, the prefabricated steel-framed column module 1, with its concrete 214 casing containing an appropriate amount of longitudinal reinforcement 17, effectively leverages the combined effect of steel and concrete. It not only possesses the superior seismic performance and high load-bearing capacity of steel structures but also enhances structural durability and fire resistance. Compared to ordinary reinforced concrete structures, the compressive, shear, and bending bearing capacity of the components is significantly increased, while the cross-sectional area is reduced by approximately 50%, avoiding the "fat beams and columns" phenomenon common in reinforced concrete structures. This increases usable floor area, effectively solves the problem of protruding interior column corners and encroachment on building space, improves the usable floor area ratio, increases the flexibility and diversity of architectural design and interior layout, makes the interior more aesthetically pleasing, and controls costs while maintaining technological maturity, thus reducing construction expenses. The prefabricated steel-framed column module 1 can be industrially processed, enabling streamlined processing, transportation, and assembly operations, improving the quality of supervision and engineering throughout the entire process, accelerating construction progress, and is bound to be widely used in future building structures.

[0057] Please continue reading. Figure 6Referring to Figures 5(a) to (c), the precast concrete-clad T-shaped steel cellular beam 21 further includes a T-shaped cellular steel section 211, a through U-shaped connecting bar 212 welded to the top surface of the web of the T-shaped cellular steel section 211, a U-shaped steel cage 213 surrounding the T-shaped cellular steel section 211, and an outer concrete cladding 214 enclosing the T-shaped cellular steel section 211 and the U-shaped steel cage 213. The through U-shaped connecting bar 212 is welded to the top surface of the web of the T-shaped cellular steel section 211 to connect the precast concrete-clad T-shaped steel cellular beam 211 with the composite floor slab module 3, and is used for hoisting the component during transfer and transportation. Cellular holes 215 are spaced apart near the bottom of the precast composite slab 31 on the web of the T-shaped cellular steel section 211. More specifically, the honeycomb holes 215 can be formed by laser integral cutting or by welding after cutting. Their shape can be circular, rectangular, hexagonal, or a combination of different shapes. The honeycomb holes 215 can be arranged in a regular symmetrical arrangement or irregularly according to design requirements. The outer concrete 214 is any one of ordinary concrete, lightweight aggregate concrete, ceramsite concrete, steel slag concrete, steel fiber concrete, carbon fiber concrete, and high-strength concrete. The outer concrete 214 of the precast outer concrete T-shaped steel honeycomb beam 21 is poured along the entire length of the beam, except for a 350mm range at the ends of the T-shaped honeycomb steel 211. The precast concrete-clad T-shaped steel honeycomb beam 21 reduces the beam's self-weight by thinning the concrete protective layer and setting honeycomb holes 215, allowing for the installation of various pipelines in the building. Simultaneously, the combination of the precast concrete-clad T-shaped steel honeycomb beam 21 and the composite floor slab module 3 conceals part of the beam within the composite floor slab module 3, reducing the beam cross-section while improving its load-bearing capacity, durability, and fire resistance, and increasing the overall bending and torsional stiffness. Similar to the prefabricated concrete-clad steel irregular column module 1, the concrete-clad T-shaped steel honeycomb beam module 2 also effectively combines the advantages of steel and concrete, fully leveraging their respective strengths. The resulting prefabricated concrete-clad steel irregular column-T-shaped steel honeycomb beam structure is a new type of prefabricated building with excellent load-bearing and seismic performance, simple node construction, high industrialization level, and short construction period.

[0058] Please continue reading. Figure 8 , Figure 9The composite floor slab module 3 comprises a precast composite slab 31 mounted on a precast concrete-clad T-shaped steel honeycomb beam 21 with an outer concrete cladding 214, a post-laid steel mesh 32 mounted on the precast composite slab 31 and passing through a through-type U-shaped connecting bar 212, and a cast-in-place concrete slab 33 with the precast composite slab 31 as the bottom formwork and enclosing the post-laid steel mesh 32. The precast composite slab 31 further comprises a steel mesh formed by longitudinal bars 17 and steel trusses 311, and precast concrete 312 enclosing the steel mesh. As a specific embodiment, the precast composite slab 31 can also be selected as either a cast-in-place floor slab or a profiled steel sheet composite floor slab, depending on design requirements, construction conditions, and project cost. In this invention, the precast composite slab 31 can be uniformly processed and manufactured in the factory, which can ensure the quality of casting. Compared with ordinary cast-in-place floor slabs, the precast composite slab 31 does not require on-site formwork, saving manpower and improving construction efficiency. Compared with profiled steel sheet composite floor slabs, the precast composite slab 31 does not require fireproof coating on the bottom of the slab, which can reduce the cost.

[0059] Please continue reading. Figure 6 Referring to Figures 3(a) to 3(c), the concrete-clad T-shaped steel honeycomb beam module 2 has a precast concrete-clad T-shaped steel honeycomb beam 21 connected to the steel profile column 10 via a beam-column locking unit 15 and a threaded steel bar 22 connected to the sleeve connecting plate 14 via a sleeve 141. When the T-shaped honeycomb steel 211 of the precast concrete-clad T-shaped steel honeycomb beam 21 is connected to the beam-column locking unit 15, the web 101 and flange 102 of the T-shaped honeycomb steel 211 are inserted into the T-shaped placement space formed by the longitudinally arranged clamping plate 151 and T-shaped connector 152. A copper plate 23 is provided between the flange 102 of the T-shaped honeycomb steel 211 and the T-shaped connector 152. Then, the T-shaped honeycomb steel 211, the copper plate 23, and the clamping plate 151 and T-shaped connector 152 of the beam-column locking unit 15 are locked by bolts 104. The bolt 104 is a torsion shear type high-strength bolt or a large hexagonal high-strength bolt.

[0060] Please refer to Figures 5(a) to 5(c). In the prefabricated concrete-clad steel irregular column-T-shaped steel cellular beam structure, the column-to-column connection nodes of the steel irregular columns 10 adopt a bolted-welded composite connection at the inflection point. That is, the web 101 of the steel irregular column 10 is fastened to the frame by bolts 104 through the web connecting plate 103, and the flange 102 of the steel irregular column 10 is butt-welded through the weld bevel 105. Finally, the outer concrete 214 at the connection node is poured. Obviously, the prefabricated concrete-clad steel irregular column module 1 is spliced ​​near the inflection point of the frame. The bending moment at the inflection point is small, which can alleviate fire and corrosion problems, reduce the amount of bolts 104, and ensure installation accuracy, flexibility and component assembly efficiency, which has significant advantages in assembly.

[0061] Please continue reading. Figure 10 The foundation beam-column module 4 includes an independent foundation 41 with pre-embedded anchor bolts 40, an end plate 42 fixed to the independent foundation 41 at the bottom end of the steel profile column 10 and secured to the independent foundation 41 by bolts 104, and a foundation beam connecting section 44 for connecting to the foundation beam 43 and protruding from the outer surface of the prefabricated concrete-clad steel profile column module 1. The width of the foundation beam connecting section 44 is the same as the width of the flange 102 of the steel profile column 10. To facilitate on-site welding of the foundation beam 43 and to ensure a stable overall frame system, preferably, the length of the foundation beam connecting section 44 protruding from the outer surface of the prefabricated concrete-clad steel profile column module 1 is not less than 500mm. The foundation beam 44 provides resistance to bending and shear, and will provide shear resistance when the frame experiences uneven settlement. When the foundation beam and column module 4 is prefabricated in the factory, the steel irregular column 10 is first welded to the end plate 42 and the foundation beam connection section 44, then the longitudinal reinforcement 17 and stirrups 18 are tied, and finally the outer concrete 214 is poured. The foundation beam connection section 44 is then welded to the foundation beam 43 and locked to the pre-embedded anchor bolts 40 of the independent foundation 41 by bolts 104.

[0062] To more intuitively reveal the present invention and highlight its beneficial effects, the installation of the prefabricated concrete-encased steel irregular column-T-shaped steel cellular beam structure is now described in conjunction with specific embodiments. In the specific embodiments, the specifications, dimensions, shapes, material thicknesses, connection methods, and sequence of steps of each component are merely examples and should not be regarded as limitations on the technical solution of the present invention.

[0063] Please see Figure 11 and in conjunction with reference Figures 1-10 The installation of the prefabricated concrete-encased steel irregular column-T-shaped steel cellular beam structure includes:

[0064] Step S1: The prefabricated composite slabs 31 and foundation beam-column modules 4 of the prefabricated concrete-clad steel irregular column module 1, concrete-clad T-shaped steel honeycomb beam module 2, and composite floor slab module 3 are prefabricated in the factory and transported to the construction site.

[0065] Step S2: Secure the end plate 42 of the prefabricated concrete-encased steel irregular column module 1 to the independent foundation 41 of the foundation beam and column module 4 using pre-embedded anchor bolts 40 and bolts 104.

[0066] Execute step S3: hoist the foundation beam 43 to the foundation beam-column module 4, and weld the foundation beam 43 to the foundation beam connection section 44;

[0067] Step S4: The precast concrete-clad T-shaped steel honeycomb beam 21 is hoisted to the prefabricated concrete-clad steel irregular column module 1 and connected by the beam-column locking unit 15. The web 101 and flange 102 of the T-shaped honeycomb steel 211 are inserted into the T-shaped space formed by the longitudinally arranged clamping plate 151 and T-shaped connector 152. A copper plate 23 is placed between the flange 102 of the T-shaped honeycomb steel 211 and the T-shaped connector 152. Then, the T-shaped honeycomb steel 211, the copper plate 23, and the clamping plate 151 and T-shaped connector 152 of the beam-column locking unit 15 are locked by bolts 104.

[0068] Step S5: Hoist the precast composite slab 31 onto the outer concrete of the precast concrete-clad T-shaped steel honeycomb beam 21, fasten the threaded steel bar 22 to the sleeve 141, and lay the steel mesh 32 on the precast composite slab 31 and through the through U-shaped connecting bar 212. Then, using the precast composite slab 31 as the bottom formwork, pour the cast-in-place floor slab concrete 33 wrapped with the steel mesh 32.

[0069] Step S6: The web 101 of the steel irregular column 10 is fastened to the web connecting plate 103 by bolts 104, the flange 102 of the steel irregular column 10 is butt welded to the flange by weld bevel 105, and concrete 214 is poured at the joint.

[0070] As will be readily understood by those skilled in the art, the prefabricated concrete-encased steel irregular column-T-shaped steel cellular beam structure of the present invention has the following significant advancements:

[0071] (1) The components in the prefabricated concrete-encased steel irregular column-T-shaped steel honeycomb beam structure of the present invention are all modularly designed and can be prefabricated in the factory. On site, only the assembly of the connecting parts between the components is required to complete the assembly of the overall frame, realize the processing-transportation-assembly assembly line operation, improve the quality of supervision and engineering quality throughout the process, speed up the construction progress, significantly reduce the construction period, reduce the project cost, and reduce energy consumption and carbon emissions.

[0072] (2) The prefabricated external concrete steel irregular column-T-shaped steel honeycomb beam structure of the present invention discloses a new type of prefabricated external concrete steel irregular column with high degree of prefabrication, thinner protective layer and lower reinforcement ratio. According to different layout positions and functional requirements in the building structure system, the traditional rectangular cross-section column is divided into three types of corner columns, side columns and inner columns with different cross-sections. While effectively improving the compression, shear and bending bearing capacity of the components compared with ordinary reinforced concrete structures, it reduces the building main cross-section by 50% to avoid the phenomenon of fat beams and fat columns in reinforced concrete structures, increases the usable area of ​​the house, effectively solves the problem of protruding interior column corners and occupying building space, improves the usable floor area ratio, increases the flexibility and diversity of building design and interior layout, makes the interior more beautiful, and controls costs while the technology is mature and reduces construction costs.

[0073] (3) The prefabricated concrete-clad steel irregular column-T-shaped steel honeycomb beam structure of the present invention proposes a new reinforcement scheme. This scheme moves the traditional longitudinal bars inward as stirrups and stirrups to form a complete concrete restraint system with stirrups, stirrups and steel. The stirrups and stirrups restrain the buckling of the steel flange while restraining the concrete, which can effectively reduce the thickness of the concrete cover. The steel flange and web participate in the restraint of the concrete and can effectively reduce the need for stirrups, thereby reducing the reinforcement ratio of the new concrete-clad steel irregular column.

[0074] (4) The prefabricated concrete-clad steel irregular column-T-shaped steel honeycomb beam structure of the present invention has stiffening ribs and threaded steel sleeves inside the steel column at the beam-column joint connection to improve the stress performance of the beam-column joint. The stiffening ribs are set inside the web of the concrete-clad steel irregular column, which improves the local stress performance of the joint and enables the frame to achieve the seismic design goal of "strong joint and weak component".

[0075] (5) The prefabricated concrete-encased steel irregular column-T-shaped steel honeycomb beam structure of the present invention is assembled as a whole by cutting off the beam and column nodes and the inflection point where the column bending moment is very small in the frame. The bolted and welded hybrid connection is adopted. During assembly, the steel web is first accurately positioned and connected by high-strength bolts and clamps, and then the steel flange is connected by welding. This avoids the difficulty of connecting the column flange due to its small size. In addition, a concrete protective layer to improve the stability of the node is poured in the later stage, so that the column-to-column connection node forms a fixed connection, improves the overall stress performance of the column-to-column connection part, and does not weaken the stress performance of the column due to the cut-off, thus achieving the design goal of "strong column and weak beam" of the component.

[0076] (6) The prefabricated concrete-clad steel irregular column-T-shaped steel honeycomb beam structure of the present invention is provided with T-shaped connectors and clamps at the beam-column connection points to facilitate connection with the concrete-clad T-shaped steel honeycomb beams, and is fastened with high-strength bolts. The T-shaped connectors facilitate the hoisting and positioning of the concrete-clad T-shaped steel honeycomb beams, enabling precise positioning of the beams and columns while improving the stability and load-bearing performance of the beam-column connection points. The all-high-strength bolt connection scheme also meets the development requirements of reducing welding construction in prefabricated buildings in my country;

[0077] (7) In the prefabricated concrete-encased steel irregular column-T-shaped steel honeycomb beam structure of the present invention, a copper plate of the same size is added to the T-shaped connector at the beam-column joint and the middle of the T-shaped steel flange of the concrete-encased T-shaped steel honeycomb beam. The copper plate is used to realize the sliding energy dissipation function of the beam-column joint under small earthquake.

[0078] (8) The prefabricated concrete T-shaped steel cellular beam of the prefabricated concrete T-shaped steel cellular beam structure of the present invention is composed of prefabricated concrete T-shaped steel cellular beam, threaded steel bars and cast-in-place floor slab. It reduces the thickness of concrete cover and the form of cellular holes by adopting the same reinforcement scheme as the above-mentioned concrete T-shaped steel cellular column to reduce the self-weight of the beam. The setting of cellular holes facilitates the passage of various pipelines in the building. When combined with the composite floor slab, it hides part of the beam in the floor slab, reduces the beam cross section, increases the building clearance, and improves the load-bearing performance, durability and fire resistance of the beam when combined with the composite floor slab. It also increases the bending and torsional stiffness of the overall cross section.

[0079] (9) The prefabricated concrete T-shaped steel cellular beam of the prefabricated concrete T-shaped steel cellular beam structure of the present invention has a through U-shaped connecting bar welded to the upper part of the web of the T-shaped steel beam, which can connect the concrete T-shaped steel cellular beam with the floor slab steel reinforcement mesh as a whole. At the same time, it is convenient to hoist the beam during on-site construction and is beneficial to the arrangement of floor slab steel reinforcement and pipes.

[0080] (10) The new type of concrete-clad T-shaped steel honeycomb beam has added threaded steel bars in the negative bending moment zone, which improves the tensile performance of the beam in the negative bending moment zone and prevents cracking of the concrete surface. It is connected to the concrete-clad steel irregular column through threaded steel bar sleeves, which is simple to construct and can effectively enhance the seismic performance of the joints of the frame when subjected to a major earthquake. The amount of steel bars can be appropriately increased or decreased according to the design requirements.

[0081] In summary, the prefabricated concrete-encased steel irregular column-T-shaped steel honeycomb beam structure of this invention not only reduces the self-weight of the beams, facilitates pipeline layout, reduces beam cross-section, and increases building clearance, but also possesses excellent stress and seismic performance, simple node construction, high level of industrialization, and short construction period. It is more suitable for the rapid development of my country's construction industry, suitable for industrialized production, can improve the level of the construction industry, realize the modernization of the construction industry, and has a positive promoting effect on the prefabricated building industry, thus having far-reaching significance.

[0082] Those skilled in the art will understand that various modifications and variations can be made to this invention without departing from its spirit or scope. Therefore, if any modification or variation falls within the scope of the appended claims and their equivalents, the invention is considered to cover such modifications and variations.

Claims

1. A fabricated outer package concrete shaped steel special-shaped column-T-shaped steel cellular beam structure, characterized in that, The assembled outer-wrapped concrete shaped steel special-shaped column-T-shaped steel cellular beam structure comprises: The assembled outer-wrapped concrete shaped steel special-shaped column module has L-shaped outer-wrapped concrete shaped steel special-shaped columns, T-shaped outer-wrapped concrete shaped steel special-shaped columns and cross-shaped outer-wrapped concrete shaped steel special-shaped columns which respectively constitute corner columns, edge columns and inner columns of the structural system, sleeve connecting plates are arranged between the webs of the shaped steel special-shaped column beam-column joints, sleeves are arranged between the sleeve connecting plates and the outer sides of the flanges of the adjacent shaped steel special-shaped columns, beam-column locking units are arranged on the outer sides of the flanges of the shaped steel special-shaped columns below the sleeve connecting plates, the beam-column locking units further comprise vertically arranged clamps and T-shaped connecting pieces, stiffening ribs which are equal in height to the T-shaped connecting pieces are arranged on the shaped steel special-shaped columns between the webs of the beam-column locking units, the webs of the shaped steel special-shaped columns are connected by web connecting plates through bolt locking, the flanges of the shaped steel special-shaped columns are connected by welding, longitudinal reinforcement is symmetrically arranged on the outer sides of the flanges of the shaped steel special-shaped columns except for the beam-column joints, and hoop reinforcement is bound along the length of the column at equal intervals on the outer sides of the longitudinal reinforcement, thereby forming a steel framework of the assembled outer-wrapped concrete shaped steel special-shaped column module; The outer-wrapped concrete T-shaped steel cellular beam module has L-shaped outer-wrapped concrete T-shaped steel cellular beams and T-shaped outer-wrapped concrete T-shaped steel cellular beams which respectively constitute edge beams and inner beams of the structural system, the outer-wrapped concrete T-shaped steel cellular beams and the T-shaped outer-wrapped concrete T-shaped steel cellular beams are all provided with prefabricated outer-wrapped concrete T-shaped steel cellular beams connected with the shaped steel special-shaped columns through beam-column locking units and threaded steel bars connected with the sleeve connecting plates through sleeves, the prefabricated outer-wrapped concrete T-shaped steel cellular beams further comprise T-shaped cellular steels, through U-shaped connecting reinforcement arranged on the top surfaces of the webs of the T-shaped cellular steels, U-shaped steel reinforcement cages sleeved on the peripheries of the T-shaped cellular steels and outer-wrapped concrete wrapping the T-shaped cellular steels and the U-shaped steel reinforcement cages; The composite floor slab module has a prefabricated composite slab arranged on the outer-wrapped concrete of the prefabricated outer-wrapped concrete T-shaped steel cellular beam, a post-paved steel reinforcement mesh arranged on the prefabricated composite slab and passing through the through U-shaped connecting reinforcement and cast-in-place floor slab concrete wrapped around the prefabricated composite slab and the post-paved steel reinforcement mesh; The foundation beam-column module has an independent foundation with embedded foundation bolts, an end plate arranged at the bottom end of the shaped steel special-shaped column and fixed with the independent foundation through bolts and a foundation beam connecting section used for connecting with the foundation beam and protruding from the outer surface of the assembled outer-wrapped concrete shaped steel special-shaped column module; When the T-shaped cellular steel of the prefabricated outer-wrapped concrete T-shaped steel cellular beam is connected with the beam-column locking unit, the web and the flange of the T-shaped cellular steel are inserted into a T-shaped accommodation space formed by the vertically arranged clamps and the T-shaped connecting pieces, and a red copper plate is arranged between the flange of the T-shaped cellular steel and the T-shaped connecting piece, and then the T-shaped cellular steel, the red copper plate and the clamps and the T-shaped connecting pieces of the beam-column locking unit are locked by bolts.

2. The assembled outer package concrete shaped steel special-shaped column-T-shaped steel cellular beam structure according to claim 1, characterized in that, When assembled on site, the outer-wrapped concrete is poured into the beam-column joints within 100 mm below the stiffening ribs of the sleeve connecting plates and the column-column joints within 80 mm from the column ends of the shaped steel special-shaped columns.

3. The assembled outer package concrete shaped steel special-shaped column-T-shaped steel cellular beam structure according to claim 1, characterized in that, The column-column joints of the profiled steel special-shaped column are located at the column reverse bending point positions, the fabricated outer wrapped concrete profiled steel special-shaped column module spans multiple layers, and the corner columns, middle columns and side columns are spliced in staggered layers.

4. The assembled outer package concrete shaped steel special-shaped column-T-shaped steel cellular beam structure according to claim 1, characterized in that, The stiffening rib further comprises an L-shaped stiffening rib used when forming an L-shaped accommodation space between the webs of the beam-column locking unit and a rectangular stiffening rib used when forming a rectangular accommodation space between the webs of the beam-column locking unit.

5. The assembled outer package concrete shaped steel special-shaped column-T-shaped steel cellular beam structure according to claim 1, characterized in that, The thickness of the sleeve connecting plate is the same as the thickness of the flange of the profiled steel special-shaped column.

6. The assembled outer package concrete shaped steel special-shaped column-T-shaped steel cellular beam structure according to claim 1, characterized in that, The webs of the T-shaped honeycomb profiled steel are spaced apart to form honeycomb holes near the bottom of the prefabricated composite slab.

7. The assembled outer package concrete shaped steel special-shaped column-T-shaped steel cellular beam structure according to claim 6, characterized in that, The honeycomb holes are integrally cut and formed by laser or are cut and then formed by welding.

8. The assembled outer package concrete shaped steel special-shaped column-T-shaped steel cellular beam structure according to claim 7, characterized in that, The shape of the honeycomb holes is at least one of a circle, a rectangle, a hexagon, or a combination thereof. 9.The assembled outer package concrete special-shaped column-T-shaped steel cellular beam structure of claim 1, wherein, The bolt is a torsional shear high-strength bolt or a large hexagonal high-strength bolt, and the outer wrapped concrete is at least one of ordinary concrete, ceramsite concrete, steel slag concrete, steel fiber concrete and carbon fiber concrete.

10. The assembled outer package concrete shaped steel special-shaped column-T-shaped steel cellular beam structure according to claim 1, characterized in that, When assembled on site, the outer wrapped concrete of the prefabricated outer wrapped concrete T-shaped steel honeycomb beam is continuously poured along the beam length direction except for a range of 350 mm inside the end of the T-shaped honeycomb profiled steel.

11. The assembled outer package concrete shaped steel special-shaped column-T-shaped steel cellular beam structure according to claim 1, characterized in that, The prefabricated composite slab further comprises a steel mesh formed by longitudinal reinforcement and steel bar truss, and precast concrete wrapping the steel mesh.

12. The assembled outer package concrete shaped steel special-shaped column-T-shaped steel cellular beam structure according to claim 1, characterized in that, The prefabricated composite slab is a cast-in-place floor slab or a profiled steel plate composite floor slab.

13. The assembled outer package concrete shaped steel special-shaped column-T-shaped steel cellular beam structure according to claim 1, characterized in that, The width of the foundation beam connecting section is the same as the width of the flange of the profiled steel special-shaped column.

14. The assembled outer package concrete shaped steel special-shaped column-T-shaped steel cellular beam structure according to claim 1, characterized in that, The length of the foundation beam connecting section protruding out of the outer surface of the fabricated outer wrapped concrete profiled steel special-shaped column module is not less than 500 mm.

15. The installation of the fabricated outer package concrete special-shaped column-T-shaped steel cellular beam structure according to claim 1, characterized in that, The installation of the fabricated outer wrapped concrete profiled steel special-shaped column-T-shaped steel honeycomb beam structure comprises: Step S1: prefabricate the fabricated outer wrapped concrete profiled steel special-shaped column module, the outer wrapped concrete-T-shaped steel honeycomb beam module, the prefabricated composite slab of the composite floor slab module, and the foundation beam column module in a factory and hoist them to the construction site; Step S2: lock and install the end plate of the fabricated outer wrapped concrete profiled steel special-shaped column module and the independent foundation of the foundation beam column module by pre-buried foundation bolts and bolts; Step S3: hoist the foundation beam to the foundation beam column module and weld the foundation beam and the foundation beam connecting section; Step S4: hoist the prefabricated outer wrapped concrete T-shaped steel honeycomb beam to the fabricated outer wrapped concrete profiled steel special-shaped column module, connect by the beam-column locking unit, insert the web and flange of the T-shaped honeycomb profiled steel into the T-shaped accommodation space formed by the vertically arranged clamps and T-shaped connectors in the longitudinal direction, and set a red copper plate between the flange of the T-shaped honeycomb profiled steel and the T-shaped connector, and then lock the T-shaped honeycomb profiled steel, the red copper plate and the clamps and T-shaped connectors of the beam-column locking unit by bolts; Step S5: hoist the prefabricated composite slab to the outer wrapped concrete of the prefabricated outer wrapped concrete T-shaped steel honeycomb beam, tighten the threaded steel bars and sleeves, and then lay the steel mesh on the prefabricated composite slab and through the through U-shaped connecting rib, and then pour the cast-in-place floor slab concrete wrapping the laid steel mesh with the prefabricated composite slab as a bottom mold; The execution step S6: the web plate of the profiled steel special-shaped column is connected by the web plate connecting plate through the bolt locking, the flange of the profiled steel special-shaped column is connected through the welding groove butt joint, and the node is poured with the outer package concrete.

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