Modularized steel structure building

Abstract

The invention discloses a modular steel structure building. According to a traditional steel structure building, beams bear horizontal shearing resistance, keels serve as supporting frameworks of external hanging materials such as heat preservation plates and decoration panels and bear the self weight, wind loads, construction loads and the like of the materials, the horizontal shearing force is borne by the beams, the keels do not participate in stress of a main body structure, the effect is single, and materials are wasted. The integrated wall body module comprises stand columns and shear-resistant keels, a set of stand columns and a set of shear-resistant keels are fixedly connected to form a wall body module framework, the wall body module framework, a sound insulation and heat preservation layer and a water and fire protection layer are compounded to form the integrated wall body module, and a set of integrated wall body modules are connected through the stand columns to form an integrated wall body; the integrated floor slab module comprises floor slab structural beams and shear-resistant keels, a set of floor slab structural beams and a set of shear-resistant keels are fixedly connected to form a floor slab module framework, and the floor slab module framework, the sound insulation and heat preservation material and the water and fire protection layer are compounded to form the integrated floor slab module. The method is used for modular steel structure buildings.

Description

Technical Field

[0001] This invention relates to the field of construction, and in particular to a modular steel structure building. Background Technology

[0002] Steel structure buildings offer significant advantages such as earthquake resistance, low carbon footprint, and suitability for industrialized mass production. They can completely solve the problems of excessive resource waste and numerous safety hazards associated with traditional construction, and have thus gained widespread attention. Industrialized construction, building houses like cars, is a development strategy for the construction industry in many countries. Currently, most construction processes for multi-walled steel structure buildings, such as residential buildings and hotels, are still carried out on-site. Achieving true industrialization for multi-walled buildings still has a long way to go.

[0003] Existing multi-wall steel-structure buildings involve manufacturing the main structural components in a factory and then assembling them on-site. After the main structure is erected, the framework is welded on-site, followed by the installation of insulation materials, fireproofing, decorative panels, and other enclosure components. The installation work accounts for 30% of the main structure and 70% of the enclosure components. This work involves a significant amount of high-altitude and strenuous work, coupled with limited on-site equipment and the secondary handling and storage of insulation materials, resulting in low construction efficiency and poor safety. Furthermore, it generates substantial construction waste, polluting the environment and wasting funds.

[0004] In traditional steel structure buildings, the beams bear the horizontal shear force, while the keel mainly serves as a supporting framework for external materials such as insulation boards and decorative panels, bearing the self-weight of these materials, wind loads, and construction loads. The horizontal shear force is borne by the beams, and the keel does not participate in the main structural stress, resulting in a single function and wasted materials.

[0005] Existing multi-wall steel-structure buildings often feature large column spacing, typically exceeding 4 meters. Columns are supported by beams at floor height, with the support spacing equal to the floor height. Beams rely on mutual support in both longitudinal and transverse directions. This large spacing between components results in high bending and torsional strength, but also a long effective load-bearing length, leading to material waste. How to design the spacing between columns and beams to reduce the effective load-bearing length, and how to create an integrated structure for easy installation of columns and beams, has been a research topic and a challenge. Furthermore, traditional framing only serves as enclosure components; how to integrate it into the main structure with new functions is also an important issue.

[0006] New steel-walled buildings typically use thin steel plates (less than 3.0mm) cold-formed into components, offering significant advantages such as high structural strength and rigidity. However, poor fire resistance is their fatal weakness. Due to the thinness of the steel plates, the load-bearing capacity decreases rapidly in the event of a fire, posing a significant risk of collapse. Traditional steel-structured buildings are mainly those with fewer walls, such as industrial plants. Fire prevention primarily involves spraying fire-retardant coatings onto the outer surfaces of beams and columns. While the cost of fire-retardant coatings is high, it is still acceptable given the relatively small surface area of ​​beams and columns. However, for new steel-walled buildings, the vast surface area of ​​the walls makes applying fire-retardant coatings to the entire structure prohibitively expensive. Traditional fire-retardant spraying is done on-site; therefore, designing fire-resistant structures that can be manufactured in a factory is a crucial issue for multi-walled buildings.

[0007] Existing fire protection measures for steel structure buildings only apply to the outer surfaces of the components, leaving the inner surfaces unprotected, which is detrimental to fire safety. Furthermore, in existing steel structure buildings, the inner surfaces of the insulation components are not specially filled with insulation materials during the construction of the thermal insulation structure, which is detrimental to sound and heat insulation.

[0008] Rock wool, glass wool, and other Class A fire-resistant materials offer excellent fire resistance, low cost, good thermal insulation, and sound insulation, making them ideal fireproof and thermal insulation materials. However, these materials also have significant drawbacks. During on-site installation, rock wool and glass wool fibers can easily pierce the body, harming health, and installation is difficult. Wind significantly impacts rock wool installation; even in a light breeze, cutting rock wool generates dust that flies everywhere, polluting the environment. Furthermore, cutting rock wool produces a large amount of debris, making rock wool waste difficult to dispose of.

[0009] Rock wool and other fiber-based insulation materials are highly absorbent, making them prone to water ingress during transportation, storage, and construction, thus affecting their insulation performance. To prevent rainwater from damaging the insulation, work must be suspended regardless of the amount of rain, impacting the construction schedule. Furthermore, to prevent rain damage, rock wool and exterior wall finishes must be installed simultaneously, increasing construction complexity. A large area is also required for on-site storage of insulation materials. Due to these numerous drawbacks, manufacturers are reluctant to use fire-resistant materials like rock wool and glass wool, preferring instead materials like polystyrene boards and extruded polystyrene boards, which are easy to install and offer good rain resistance but poor fire resistance and sound insulation. This is a fundamental reason for the frequent occurrence of building fires.

[0010] Water and electricity pre-installation is a relatively complex on-site construction process. How to integrate and solve problems such as main component installation, fire prevention, rain protection, sound and heat insulation, water and electricity installation, and subsequent decoration in one go through a modular structure is a challenge. Summary of the Invention

[0011] The purpose of this invention is to provide an integrated, modular steel structure building that combines the main components with thermal and sound insulation, fireproofing, decorative panels, water and electricity systems, and post-decoration interfaces.

[0012] The above objectives are achieved through the following technical solutions: A modular steel structure building comprises a foundation, integrated wall modules, integrated floor modules, doors and windows, and a roof. The integrated wall modules include columns and shear studs; a set of columns and a set of shear studs are fixedly connected to form a wall module skeleton. This wall module skeleton, combined with a sound insulation and thermal insulation layer and a fire and water protection layer, forms the integrated wall module. A set of integrated wall modules are interconnected via the columns to form an integrated wall. The integrated floor modules include floor structural beams and shear studs; a set of floor structural beams and a set of shear studs are fixedly connected to form a floor module skeleton. This floor module skeleton, combined with sound insulation and thermal insulation materials and a fire and water protection layer, forms the integrated floor module. A set of integrated floor modules are interconnected via the floor structural beams to form an integrated floor. The integrated wall modules and the integrated floor modules are interconnected via the columns and floor structural beams to assemble the main building structure.

[0013] The modular steel structure building has integrated wall modules and / or integrated floor modules with reinforcing support members. The reinforcing support members are located on the opposite side of the shear keel and are fixedly connected to the columns or floor structural beams on both sides. The spacing between adjacent columns or floor structural beams is 1.5m-3.0m, and the spacing between the columns corresponds to the spacing between the floor structural beams.

[0014] In the modular steel structure building, a fireproof layer is installed on the columns and / or the floor slab structural beams. The fireproof layer is installed on the outer side of the line connecting the outer edges of adjacent columns and / or adjacent floor slab structural beams. The fireproof layer is a fireproof board or a fireproof coating. The width of the fireproof layer is greater than the side width of the column or the floor slab structural beam.

[0015] In the modular steel structure building, the shear keel or the reinforcing support is partially fixed to the inner side of the line connecting the outer edges of the adjacent columns and / or floor slab structural beams, and the other part protrudes from the line connecting the outer edges of the columns and / or floor slab structural beams, exposed on the outer side of the line connecting the outer edges. The shear keel or the reinforcing support is staggered with the columns and / or floor slab structural beams, forming a recessed structure that serves as the installation space for the fireproof layer; or the outer surface of the shear keel or the reinforcing support is flush with the outer surface of the columns and / or floor slab structural beams, forming the installation plane for the fireproof layer.

[0016] In the modular steel structure building, adjacent integrated wall modules are joined back-to-back by the sides of the columns and connected to each other by threaded fittings to form straight, L-shaped, or cross-shaped nodes; adjacent integrated wall modules are connected by column connectors to form heightened nodes; and adjacent integrated floor slab modules are joined back-to-back by the sides of the floor slab structural beams and connected to each other by threaded fittings to form straight nodes.

[0017] In the modular steel structure building, the columns and floor slab structural beams are connected by transition pieces and threaded parts; the non-standard sized wall modules have inner beams and lintels above the openings, the inner beams or lintels are connected to the columns on both sides, and the floor slab structural beams are connected to the inner beams or lintels, indirectly achieving connection with the columns.

[0018] In the modular steel structure building, the shear keel or the reinforcing support starts from one end of the integrated wall module or the integrated floor module and is arranged according to the installation spacing requirements of the exterior finish. The spacing of the shear keel is 300mm-700mm. The end of the floor structural beam at the water supply location has a reserved pipe hole, and the reserved pipe hole is surrounded by a reinforcing structure; or the transition piece has a reserved pipe hole.

[0019] In the modular steel structure building, the shear keel, the columns, and the floor slab structural beams are steel profiles; the reinforcing support is a steel profile or a folded plate; the column connector is an end plate, a combination, or an independent component; and the columns and the floor slab structural beams are welded to the supporting keel or the reinforcing support.

[0020] The modular steel structure building, wherein the water and fire protection layer is a cement blanket, fiber cement board, cement pressure board, sound insulation felt, waterproof cloth, geomembrane, or fiber cement sheet.

[0021] In the modular steel structure building, the columns and floor structural beams are C-shaped steel, rectangular tubes, or U-shaped polygons. The C-shaped steel is a widened rolled edge C-shaped steel with a width of 30mm-80mm. The columns, floor structural beams, shear joists, or reinforcing supports are filled with fireproof and heat-insulating materials. Beneficial effects

[0022] 1. In traditional steel structures, horizontal shear force is supported by beams, and the keel does not participate in the main structural load. The role of the keel is to serve as a supporting framework for external materials such as insulation boards and decorative panels, bearing the self-weight of these materials, wind loads, and construction loads. Steel wall construction is a completely new building structure. Due to the need for composite fireproof boards, insulation materials, and external decorative panels, the amount of keel used is extremely large. If the keel only exists as a supporting framework for external materials and does not participate in structural load, an additional independent support structure is needed for shear support, which is extremely wasteful and increases costs. This invention abandons the use of beams in the traditional sense. There are no beams in the main structure. In the horizontal direction of the wall, the shear-resistant keel replaces the beams in the structure to play a horizontal shear resistance role. In the vertical direction, the floor slab structural beams replace the beams in the structure to play a horizontal shear resistance role. The shear-resistant keel is both a main structural component and a keel function, which saves materials and space, and greatly reduces processing and installation costs.

[0023] 2. In traditional steel structure buildings, columns are supported by beams at floor height, and the beams rely on mutual support in the longitudinal and transverse directions. This results in large support spacing, long effective calculation lengths of structural members, and significant bending and torsional resistance in the columns, leading to material waste. This invention, by adding shear-resistant joists, reduces support spacing and shortens the effective calculation lengths of columns and floor slab beams, thereby significantly improving compressive stability and reducing material usage.

[0024] 3. This invention employs cold-bending forming technology to fabricate thin steel plates into special-specification steel profiles or folded plate components. These components are then assembled into the main load-bearing structure, resulting in high overall strength and stiffness. Due to its lightweight nature, it absorbs minimal seismic energy during strong earthquakes, exhibiting significant seismic resistance.

[0025] 4. Existing multi-wall steel structure buildings such as residential buildings and villas typically involve on-site construction of the main structure, followed by on-site welding of the keel, and then fireproofing, insulation, and panel installation. This process is inefficient due to factors such as the high-altitude and strenuous nature of the work, limited equipment, and other unfavorable conditions. On-site insulation materials also require secondary loading, unloading, and storage, increasing construction costs. This invention, however, involves factory welding of the keel, creating space for the fireproof board and insulation material. This allows for the composite of the fireproof board and insulation material in the factory, achieving standardized production line operations, high production efficiency, and controllable quality.

[0026] 5. For high-rise buildings with large structural bearing capacity and high seismic fortification requirements, this invention can add reinforcing support components to increase the building's shear resistance.

[0027] 6. This invention utilizes a combination of double-sided keels or a combination of single-sided keels and reinforcing supports to form a connection structure with a dual-plane arrangement for column or floor slab structural beams. This creates double-sided support, providing lateral support for the weak axis of the column or floor slab structural beams, thereby reducing the calculated length of the column or floor slab structural beams in the weak axis direction, preventing bending and torsional instability, and significantly improving overall stability. It prevents component deformation during manufacturing; increases the torsional strength of the column or floor slab structural beams during use, improving the stability of the main structure; and prevents deformation of integrated wall modules and integrated floor slab modules during transportation and installation.

[0028] 7. In this invention, the two sides of the keel do not contact each other, and the keel and the reinforcing support do not contact each other, forming a temperature and sound break bridge, which has good temperature insulation and sound insulation effect.

[0029] 8. The column spacing of the integrated wall module of this invention corresponds to the beam spacing of the integrated floor slab module. The floor load is transferred from the floor slab beams to the columns, and from the columns to the foundation, making the force transmission system simple and clear. The wall module and floor slab module have the same structure, strong versatility, and are convenient for mass production.

[0030] 9. The integrated wall modules of the present invention, which are face to face, are connected by upper and lower integrated floor modules to form a three-dimensional rectangular tetrahedron. A group of tetrahedrons are connected to form a room, and multiple rooms are connected to form the main building. The shear walls and shear floor slabs support each other, which has good seismic resistance and convenient construction.

[0031] 10. The columns of the integrated wall module and the floor structural beams of the integrated floor module of this invention fully consider various situations such as stress and mass production, and design the spacing between the columns and floor structural beams to be 1.5m-3.0m, which makes manufacturing, transportation and installation very convenient.

[0032] 11. New-type steel shear wall buildings generally use thin steel plates (less than 3.0mm) as the main structural components. Thin steel plates experience a rapid decrease in load-bearing capacity in the event of a fire, posing a risk of collapse; their poor fire resistance is also a weakness. The "Building Fire Protection Code" specifies the fire resistance limits for different structural components. Columns, being the main load-bearing elements of a building, have the highest fire resistance requirements, followed by beams. Applying fire-retardant coatings to the walls and floors on-site would result in extremely high construction and material costs.

[0033] This invention, based on the "Building Fire Protection Code," designs fire protection for different parts according to fire resistance ratings. Instead of the traditional method of completely encasing beams and columns, a fire-resistant layer is installed on the outside of columns and floor slabs, significantly reducing the cost of fire-resistant panels. The fire-resistant layer is installed on the outside of the line connecting adjacent columns or floor slabs, with a width greater than the side width of the columns and floor slabs, increasing the frontal fire protection area. The inner surfaces of columns and floor slabs can rely on fire-resistant insulation materials such as rock wool for protection, eliminating the need for dedicated fire-resistant panels. This approach ensures fire safety while greatly reducing material usage.

[0034] 12. In traditional steel structure buildings, the keel is an enclosure component, and the keel is lapped and connected to the side of the main component. The shear-resistant keel of this invention is connected to the top of the columns or floor slab structural beams on both sides to form a supporting structure. It can fully utilize the material properties, structural stiffness and strength of the shear-resistant keel itself, and give the traditional keel a new function. The keel is transformed into a shear-resistant structural component while retaining the function of a traditional enclosure component.

[0035] 13. In this invention, the shear-resistant keel portion is fixed to the inner side of the column or floor slab structural beam connection line, while the other portion protrudes from the connection line, exposed on the outer side, forming a staggered connection. This creates installation space for fireproof layers in critical beam and column areas, facilitating fire protection of key areas in high-rise and multi-story buildings. For low-rise buildings, the outer surface of the shear-resistant keel is flush with the outer surface of the column or floor slab structural beam, forming an installation plane for the fireproof protection layer, which is beneficial for installing lower fireproof layers such as cement blankets and fiber cement boards.

[0036] 14. Rock wool, glass wool, and other Class A fire-resistant insulation materials possess excellent fire resistance, heat insulation, and sound insulation properties, and are low in cost and cost-effective. However, their disadvantages are also obvious: they are highly susceptible to water ingress during transportation and construction, affecting their insulation performance. This invention incorporates a water and fire protection layer, preventing water from seeping into the walls and reducing the functionality of the insulation material during building use; it also prevents rainwater from wetting the materials during transportation and construction, allowing installation even in light rainfall conditions. Decorative wall panels can also be used as a water and fire protection layer.

[0037] 15. The construction disadvantages of fiber-based insulation materials such as rock wool and glass wool are also obvious. On the one hand, wind has a significant impact on the construction of rock wool; even in a light breeze, rock wool cutting will cause dust to fly, polluting the environment. On the other hand, rock wool fibers can easily pierce the body during on-site construction, harming health, and installation is difficult. The rock wool of this invention can be installed in a factory, without the problem of wind, can be produced on a production line, has low production costs, and poses no harm to health.

[0038] 16. Cutting rock wool produces a large number of fragments, making rock wool waste difficult to dispose of. Many construction sites mix rock wool waste with ordinary waste to evade supervision. Some are even discarded in regulatory blind spots, causing environmental pollution. This invention allows for factory production, filling columns, floor slab structural beams, shear joists, and reinforcing supports with rock wool fragments, enabling the reuse of traditional rock wool waste, increasing fireproofing and heat insulation while protecting the environment.

[0039] 17. The present invention forms a double-plane support structure with the shear keel on both sides or the shear keel on one side and the reinforcing support member on the other side, so that the shear force is more balanced. Since the shear keel on both sides or the shear keel on one side and the reinforcing support member on the other side do not contact each other, thermal bridges can be eliminated. At the same time, since there is rock wool barrier between the two keels and between the keel and the reinforcing support member, it can isolate the danger in case of fire, prevent the fire from spreading, and improve the fire resistance performance.

[0040] 18. In this invention, adjacent integrated wall modules (front-to-back or left-to-right) are connected to each other via threaded fittings by back-to-back contact with the sides of uprights. Adjacent integrated floor modules (left-to-right) are connected to each other via back-to-back contact with the sides of the floor slab structural beams, also via threaded fittings. This close-fitting connection increases structural stability and resistance to lateral bending. The uprights, relying on back-to-back side connections, achieve straight, L-shaped, or cross-shaped connection structures, solving the problem of difficult connections between longitudinal and transverse components. Adjacent integrated wall modules (upper-lower) are connected via upright connectors, resulting in high connection strength. During installation, the end plates can temporarily support the upper integrated wall modules, improving installation efficiency.

[0041] 19. The integrated wall module and integrated floor module of this invention are connected by columns and floor structural beams through transition pieces and threaded parts; the upper ends of the columns located on both sides of the opening are connected by lintels, and the floor structural beams are connected to the lintels, indirectly achieving the connection with the columns; the partially protruding integrated wall module has an inner beam, and the floor structural beams are connected to the inner beams, indirectly achieving the connection with the columns. The above connection structure and connection method are simple in structure and convenient in installation, enabling the building to be installed quickly.

[0042] 20. The shear-resistant keel and reinforcing support of this invention start from one end of the integrated wall module or integrated floor module and are arranged according to the installation spacing requirements of the exterior finish. The keel, reinforcing support, insulation layer, fireproof layer, waterproof insulation layer, and finishing layer are manufactured as a whole in the factory, reducing the on-site installation workload by 50% and truly realizing building industrialization. The shear-resistant keel spacing of this invention is 300mm-700mm, which meets the installation requirements of existing tiles, decorative panels, etc.

[0043] 21. The shear-resistant keel, columns, floor slab structural beams, and reinforcing supports of this invention are made of shaped steel sections or folded plates. During forming, holes can be drilled on the production line, completing the installation and connection requirements in one go, facilitating standardized, industrialized, and mass production. The column connector of this invention is an end plate, which can support the upper integrated wall module during installation, improving installation efficiency. The welded connection between the columns, floor slab structural beams, and supporting keels or reinforcing supports ensures high node strength and increases safety.

[0044] 22. The water and fire protection layer of this invention serves to prevent rainwater from seeping in during transportation or construction and to prevent accidental fires from causing combustion. Due to its simple function, it has a wide range of material choices, including cement blankets, fiber cement boards, cement pressure boards, sound insulation felt, waterproof cloth, geomembranes, or fiber cement sheets.

[0045] 23. The columns and floor slab structural beams of this invention are C-shaped steel or rectangular tubes, with the C-shaped steel being a widened, rolled-edge C-shaped steel. The widened rolled edge forms a welding surface with the shear-resistant keel or reinforcing support, facilitating a secure connection. The widened rolled edge width is 30mm-80mm, suitable for different keel types.

[0046] 24. The present invention fills the columns, floor slab structural beams, shear joists, or reinforcing supports with fire-resistant and heat-insulating materials. Filling with fire-resistant and heat-insulating materials can improve insulation and protection performance, and also make full use of the difficult-to-dispose-of debris generated from rock wool cutting.

[0047] 25. The outer side of the water and fire protection layer is flush with the outer side of the supporting keel. This prevents the "chimney effect" from occurring in the event of a fire, and prevents the non-closed cavity from providing more oxygen to combustion, thus structurally reducing the fire hazard. It also makes the installation of decorative surfaces more convenient; for example, tiles can be dry-hung or pasted on exterior walls or in bathrooms.

[0048] 26. Water and electricity pre-embedding is also a relatively complex process in on-site construction. The present invention has a large space between the shear keels on both sides and between the shear keels and the reinforcing support, which facilitates the pre-embedding of water and electricity pipes.

[0049] 27. The columns, floor slab structural beams, shear-resistant joists, or reinforcing supports of the present invention are filled with fireproof, soundproof, and heat-insulating materials. In the event of a fire, these materials can, on the one hand, prevent the fire from spreading to other sides of the component, and on the other hand, block sound, greatly improving the component's sound insulation performance and also increasing its thermal insulation performance. Attached Figure Description

[0050] Appendix Figure 1 This is a schematic diagram of the main structure of the modular steel structure building of the present invention, which illustrates the connection structure of the integrated wall and the integrated floor slab; Appendix Figure 2 It is attached Figure 1 An enlarged schematic diagram of part a, showing that the column and the floor slab structural beam are connected by transition piece 8; Appendix Figure 3 It is attached Figure 1 A schematic diagram of direction AA, showing the connection structure between integrated wall and integrated floor slab; Appendix Figure 4 It is attached Figure 3 Enlarged schematic diagram of part b, the column in the diagram is a widened rolled edge C-shaped steel 93; Appendix Figure 5 It is attached Figure 3 The diagram shows the distribution of shear keel in the integrated wall module and integrated floor module. Appendix Figure 6 yes Figure 5 An enlarged schematic diagram of section C shows that the integrated wall module and the integrated floor module have corresponding keels arranged on both sides; Appendix Figure 7 This is a schematic diagram of an integrated wall module with a rectangular tube reinforcing support 6; Appendix Figure 8 This is a schematic diagram of an integrated floor slab module with a folded plate reinforcing support member 61; Appendix Figure 9 This is a schematic diagram of the column connection structure with fireproof board 7. The width of the fireproof board is greater than the width of the side of the column. Column 91 is a rectangular tube column. Appendix Figure 10 The illustration shows the staggered connection between the floor slab structural beams and the shear-resistant joists to form a space for the installation of fireproof boards. The fire plate is installed in the aforementioned spatial location; Appendix Figure 11 This is a schematic diagram of the regular arrangement of shear keel; Appendix Figure 12 This is a schematic diagram of the overall building after the main building 10 is assembled. Detailed Implementation Example

[0051] like Figure 1 , Figure 2 , Figure 3 , Figure 12As shown, a modular steel structure building comprises a foundation, integrated wall modules 1, integrated floor modules 2, doors and windows, and a roof. The integrated wall modules include columns 11 and shear joists 3. A set of columns 11 and shear joists 3 are welded together to form a wall module skeleton. The wall module skeleton, combined with sound insulation and thermal insulation material 4 and a water and fire protection layer 5, forms the integrated wall module 1. A set of integrated wall modules are interconnected via the columns to form an integrated wall. The integrated floor modules include floor structural beams 21 and shear joists 3. A set of floor structural beams 21 and shear joists 3 are fixedly connected to form a floor module skeleton. The floor module skeleton, combined with sound insulation and thermal insulation material and a water and fire protection layer, forms the integrated floor module 2. A set of integrated floor modules are interconnected via the floor structural beams to form an integrated floor. The integrated wall and integrated floor modules are interconnected via the columns and floor structural beams to assemble the main building 10. Example

[0052] The modular steel structure building described in Example 1, such as Figure 7 As shown, the integrated wall module and / or the integrated floor module has a reinforcing support 6, which is located on the opposite side of the shear keel 3 and is fixedly connected to the columns or floor structural beams on both sides. The spacing between adjacent columns 11 or floor structural beams 21 is 1.5m-3.0m, and the spacing between the columns corresponds to the spacing between the floor structural beams. Example

[0053] The modular steel structure building described in Example 1 or 2, such as Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the shear keel is a double-sided keel; or the shear keel is a single-sided keel, with a reinforcing support on the opposite side of the single-sided keel. Adjacent columns or floor slab structural beams are connected by double-sided or single-sided keels and reinforcing supports located on different planes, forming a double-plane support structure, which effectively improves the stability of the columns in the weak axis direction. Example

[0054] The modular steel structure building described in Example 1, such as Figure 9 , Figure 10As shown, a fireproof layer 7 is installed on the column and / or the floor slab structural beam. The fireproof layer 7 is installed on the outer side of the line connecting the outer edges of adjacent columns 11 and / or adjacent floor slab structural beams 21. The fireproof layer is a fireproof board or a fireproof coating. The width of the fireproof layer is greater than the side width of the column 11 or the floor slab structural beam 21. Example

[0055] The modular steel structure building described in Example 1, 2, 3, or 5, such as Figure 9 , Figure 10 As shown, the shear-resistant keel 3 or the reinforcing support 6 is partially fixed to the inner side of the line connecting the outer edges of the adjacent column 11 and / or the floor slab structural beam 21, and the other part protrudes from the line connecting the outer edges of the column and / or the floor slab structural beam, exposed on the outer side of the line connecting the outer edges. The shear-resistant keel or the reinforcing support is staggered with the column and / or the floor slab structural beam, and the resulting recessed structure is the installation space for the fireproof layer. Figure 9 Alternatively, the outer surface of the shear-resistant keel or the reinforcing support member may be flush with the outer surface of the column and / or the floor slab structural beam, forming the installation plane of the fireproof layer, such as... Figure 10 . Example

[0056] The modular steel structure building described in Example 1, 2, or 4, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 9 , Figure 10 , Figure 11 As shown, the shear-resistant keel or the reinforcing support is connected to the columns on both sides or the top of the floor slab structural beams to form a support structure. Example

[0057] The modular steel structure building described in Example 1 or 2, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 9 , Figure 10 As shown, adjacent integrated wall modules, either front-to-back or left-to-right, are joined back-to-back by the sides of the columns 11 and connected to each other by threaded fittings to form straight, L-shaped, or cross-shaped nodes; adjacent integrated wall modules, either vertically or vertically, are connected by column connectors to form heightened nodes; and adjacent integrated floor slab modules, either horizontally or vertically, are joined back-to-back by the sides of the floor slab structural beams 21 and connected to each other by threaded fittings to form straight nodes. Example

[0058] Modular steel structure buildings as described in Examples 1, 2, 3, 4, 5, or 6, such as Figure 1 , Figure 3 , Figure 5 , Figure 12 As shown, a pair of corresponding integrated wall modules are connected by the upper and lower integrated floor modules to form a three-dimensional rectangular tetrahedron. A group of rectangular tetrahedrons are connected to form a room. Multiple rooms are connected to form the main building structure, which has good earthquake resistance and convenient construction. Example

[0059] The modular steel structure building described in Example 1, such as Figure 2 , Figure 11 As shown, the column 11 and the floor slab structural beam 21 are connected by a transition piece 8 and a threaded piece; the non-standard size wall module has an inner beam 12 and a lintel above the opening. The inner beam or the lintel is connected to the columns on both sides, and the floor slab structural beam is connected to the inner beam or the lintel, indirectly achieving connection with the columns. The integrated wall module 1 and the integrated floor slab module 2 have diagonal braces 89 to enhance torsional resistance and prevent structural instability.

[0060] Example 10: The modular steel structure building described in Example 1, 2, or 5, such as Figure 11 As shown, the shear keel 3 or the reinforcing support 6 starts from one end of the integrated wall module or the integrated floor slab module and is arranged according to the installation spacing requirements of the exterior finish. The shear keel 39 is the first keel at the starting end. The spacing of the shear keels is 300mm-700mm.

[0061] Example 11: The modular steel structure building described in Example 1 has a pipe pre-reserved hole at the end of the floor slab structural beam at the water supply location, and the pre-reserved pipe hole is surrounded by a reinforcing structure; or the transition piece has a pipe pre-reserved hole.

[0062] Example 12: The modular steel structure building described in Example 1, 2, or 4, such as Figure 6 ,like Figure 8 As shown, the shear keel, the column 11, and the floor slab structural beam 21 are steel profiles 9; the reinforcing support is a steel profile or a folded plate 61; the column connector is an end plate, a combination, or an independent component, and the column and the floor slab structural beam are welded to the supporting keel or the reinforcing support.

[0063] Example 13: In the modular steel structure building described in Examples 1, 3, or 11, each side of the wall module frame has a set of shear-resistant keels, or one side of the wall module frame has a set of shear-resistant keels 3, and the other side has a folded plate 61, forming a double-plane support structure. A fireproof insulation layer is located in the middle of the double-plane support structure. This double-plane support structure ensures balanced stress on the columns and cuts off thermal bridges. When a fire occurs on one side, the fireproof insulation layer can block the spread of flames, preventing the fire from spreading to adjacent rooms and ensuring the safety of the other side.

[0064] Example 14: In the modular steel structure building described in Examples 1, 3, or 11, each side of the floor slab module skeleton has a set of shear-resistant joists, or one side of the floor slab module skeleton has a set of shear-resistant joists 3, and the other side has a folded plate 61, forming a double-plane support structure. This double-plane support structure, on the one hand, ensures balanced stress on the floor slab beams, and on the other hand, cuts off thermal bridging. When a fire occurs on one side, the fireproof insulation layer can block the spread of flames, preventing the flames from spreading to rooms above when one room is on fire, thus ensuring safety.

[0065] Example 15: In the modular steel structure building described in Example 1, the water and fire protection layer is a cement blanket, fiber cement board, cement pressure board, sound insulation felt, waterproof cloth, geomembrane, or fiber cement sheet.

[0066] Example 16: The modular steel structure building described in Example 1 or 8, such as Figure 3 , Figure 4 , Figure 9 As shown, the column and the floor slab structural beam are C-shaped steel, rectangular tubes 91 or U-shaped polygons 92, the C-shaped steel is a widened rolled edge C-shaped steel 93, and the width of the widened rolled edge is 30mm-80mm; the column located at the corner is a right-angled polygon or a U-shaped polygon, and the column 11, the floor slab structural beam 21, the shear keel 3 or the reinforcing support 6 are filled with fireproof and heat-insulating material 41.

[0067] Example 17: Example 1 or 2 or 3 or 5 or 6 or 9 or 10 or 12 or 13 or 14, such as Figure 2 , Figure 4 , Figure 9 , Figure 10 As shown, in the modular steel structure building, the columns 11, the floor slab structural beams 21, the shear keel 3, or the reinforcing support 6 are filled with fireproof, soundproof, and heat-insulating materials 41 to increase fireproof, soundproof, and heat-insulating performance.

Claims

1. A modular steel construction building consisting of foundation, integrated wall modules, integrated floor modules, doors and windows and roof, characterized in that: The integrated wall module comprises a column and a shear keel, a group of the columns and a group of the shear keels are fixedly connected to form a wall module framework, the wall module framework is combined with a sound insulation and heat preservation layer and a water and fire protection layer to form the integrated wall module, and a group of the integrated wall modules are connected to each other through the columns to form an integrated wall.

2. The modular steel building structure according to claim 1, characterized in that: The integrated wall module and / or the integrated floor module have a reinforcing support, the reinforcing support is located on the opposite side of the shear keel and is fixedly connected with the columns or the floor structure beams on the two sides, and the distance between adjacent columns or floor structure beams is 1.5-3.0 m.

3. The modular steel building structure of claim 1, wherein: The columns and / or the floor structure beams are provided with a fireproof layer, the fireproof layer is arranged outside the connecting line between the outer edges of adjacent columns and / or floor structure beams, the fireproof layer is a fireproof plate or a fireproof coating, and the width of the fireproof layer is greater than the width of the side surface of the column or the floor structure beam.

4. Modular steel construction building according to claim 1 or 2 or 3, characterized in that: Part of the shear keel or the reinforcing support is fixed inside the connecting line between the outer edges of adjacent columns and / or floor structure beams, and the other part protrudes from the connecting line between the outer edges of the columns and / or floor structure beams and is exposed outside the connecting line, the shear keel or the reinforcing support is connected to the columns and / or the floor structure beams in a staggered manner, and a recess structure formed thereby serves as an installation space of the fireproof layer; or the outer side surface of the shear keel or the reinforcing support is flush with the outer side surface of the column and / or the floor structure beam, and an installation plane of the fireproof layer is formed.

5. The modular steel building structure according to claim 1 or 2, characterized in that: The front and rear or left and right adjacent integrated wall modules are connected to each other through the side surfaces of the columns in a back-to-back manner and are connected to each other through threaded fasteners to form a one-letter type, an L type or a cross type joint; the upper and lower adjacent integrated wall modules are connected through column connecting pieces to form a height-increased joint; and the left and right adjacent integrated floor modules are connected to each other through the side surfaces of the floor structure beams in a back-to-back manner and are connected to each other through threaded fasteners to form a one-letter type joint.

6. The modular steel building structure of claim 1, wherein: The columns and the floor structure beams are connected through a transition piece and threaded fasteners; the wall module with a non-standard size has an inner beam, the upper part of the hole has a lintel, the inner beam or the lintel is connected with the columns on the two sides, and the floor structure beam is connected with the inner beam or the lintel, thereby indirectly achieving the connection with the columns.

7. The modular steel construction building according to claim 1 or 2 or 5, characterized in that: The shear-resistant keel or the reinforcing support is arranged regularly according to the outer-facing installation interval requirement, the interval of the shear-resistant keel is 300-700 mm, the end of the floor structure beam at the water position has a pipe reservation hole, and the periphery of the pipe reservation hole has a reinforcing structure; or the transition piece has a pipe reservation hole.

8. The modular steel construction building according to claim 1 or 2 or 4, characterized in that: The shear-resistant keel, the column, and the floor structure beam are profiled steel pieces; the reinforcing support is a profiled steel piece or a folded plate; the column connecting piece is an end plate, a combined piece, or a separate piece; and the column, the floor structure beam, the support keel, and the reinforcing support are welded.

9. The modular steel building structure of claim 1, wherein: The water and fire protection layer is a cement blanket, a fiber cement board, a cement pressure plate, an acoustic felt, a waterproof cloth, a geomembrane, or a fiber cement sheet.

10. The modular steel building structure according to claim 1 or 8, characterized in that: The column and the floor structure beam are C-shaped steel or rectangular tubes or U-shaped polygons; the C-shaped steel is widened and rolled; the widened and rolled width is 30-80 mm; and the column, the floor structure beam, the shear-resistant keel, and the reinforcing support are filled with fireproof and heat-insulating materials.

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