Modularization-based layered assembly type low-rise steel structure system and design method

Abstract

A modular layered assembly type low-rise steel structure system comprises a steel structure body and a floor system installed on the top of the steel structure body, and the steel structure body comprises a plurality of steel columns only bearing vertical loads and a steel beam assembly installed on the tops of the steel columns; an anti-lateral member for bearing lateral load of the steel structure main body is arranged in the steel structure main body; the anti-lateral member is connected between two adjacent steel columns; the steel beam assembly comprises a plurality of main beams and a plurality of out-of-plane steel beams which are connected, and the ends of the out-of-plane steel beams are arranged on the side edges of the main beams in a wrapping mode. Compared with the prior art, the ends of the out-of-plane steel beams are wrapped by the side edges of the main beams, the continuous beam effect can be achieved, column deformation is coordinated, internal force is redistributed, the stress of the main beams and the out-of-plane steel beams is smaller, the design difficulty of the main beams and the out-of-plane steel beams is lowered, and lateral loads received by the steel structure body are borne under the arrangement effect of the anti-test components; it is ensured that the steel column only bears vertical loads, and the use stability of the steel column is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and in particular to a modular layered assembled low-rise steel structure system and a design method. Background Art

[0002] Prefabricated construction is an important development direction in the current construction industry. Its core lies in transferring components from traditional on-site construction to factories for prefabrication, and then transporting them to the site for assembly.

[0003] Currently, the prefabricated building sector faces prominent challenges such as a disconnect between design and construction information, low component standardization, insufficient supply chain collaboration, and inefficient on-site assembly. Under the traditional model, a lack of a unified information platform and standards across all phases, from demand, design, procurement, construction, acceptance, and delivery, prevents accurate translation of design results into on-site construction plans, leading to project delays and difficulties in ensuring quality. Furthermore, a component standardization rate of less than 45% keeps production costs high, while decentralized procurement and logistics management further exacerbate issues such as untimely material supply and chaotic inventory, compromising overall building quality and seismic performance.

[0004] At the same time, due to the rigidity of traditional construction processes and the prevalence of customized designs, most companies still rely on the linear model of "demand-design-procurement-construction-acceptance-delivery". They lack an integrated digital platform for collaborative management of the entire project process. In addition, most existing building components are customized, making mass production and factory assembly difficult to achieve. A large number of manual adjustments are required on the construction site. In addition, the supply chain, production, logistics and other links are independent of each other, and information silos are serious, making project management inefficient and costs difficult to effectively control. There is an urgent need for transformation and upgrading through standardization and informatization.

[0005] Chinese patent CN105002982A discloses a bundled tube steel frame composite structure for industrialized prefabricated steel structure housing, comprising a group of small dense column frame bundles (I) and a steel frame (II) connecting each frame bundle; the small dense column frame bundle is composed of steel columns (III) evenly distributed according to the building module and H-shaped steel beams (IV) connected between the steel columns; the steel frame is composed of steel columns (II-1) distributed at the intersection of the building walls and H-shaped steel beams (II-2) connecting the steel columns; the steel columns are square steel tubes with a closed cavity in the middle that can be filled with concrete; the H-shaped steel beams are high-frequency welded H-shaped steel, hot-rolled H-shaped steel, or welded H-shaped steel.

[0006] The above-mentioned combined structure is connected as a whole by welding, but the welding effect depends on the operator's technique and experience. In addition, due to the large number of welding points in the above-mentioned combined structure, welding defects such as cracks, holes, solid inclusions, lack of fusion, and incomplete penetration are easily formed, which affect the overall structural strength of the combined structure. At the same time, the welded structure also affects the assembly efficiency of the overall combined structure, which is time-consuming and labor-intensive. Summary of the Invention

[0007] The present invention aims to overcome the above-mentioned defects in the prior art and provide a modular layered assembled low-rise steel structure system and design method with digital and standardized management, simple component connection, and fast construction and installation.

[0008] In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical scheme: a modular layered assembled low-rise steel structure system, including a steel structure body and a floor slab installed on the top of the steel structure body, the steel structure body includes a plurality of steel columns that only bear vertical loads and a steel beam assembly installed on the top of the steel columns; the steel structure body is provided with a side-resisting member for bearing the lateral load of the steel structure body, and the side-resisting member is connected between two adjacent steel columns; the steel beam assembly includes a plurality of main beams and a plurality of out-of-plane steel beams connected to each other, and the ends of the out-of-plane steel beams are arranged in a covering manner on the side of the main beam.

[0009] As a preferred solution of the present invention, the steel structure body is composed of at least one layer of steel beam assemblies, and the bottom of each layer of steel beam assemblies is provided with several steel columns for supporting the steel beam assemblies, and the bottom of the steel structure body is provided with a bottom foundation connected to the bottom steel columns.

[0010] As a preferred solution of the present invention, a cross connector is provided at the end of the steel column, and a cross stiffening plate connected to the underlying foundation or steel beam assembly is provided at the end of the cross stiffening plate. Several bolts for fixing the steel column are provided at the corners of the cross stiffening plate, and stiffening plates corresponding to the steel columns are formed in the main beam and the out-of-plane steel beam.

[0011] As a preferred solution of the present invention, through holes are reserved on the main beam and the out-of-plane steel beam for passing through the pipelines, and bolt connection holes are also reserved on the main beam and the out-of-plane steel beam for connecting cross connectors.

[0012] As a preferred solution of the present invention, the anti-side member includes a supporting body and a plurality of diagonal braces hingedly connected to the supporting body, the diagonal braces are hingedly connected to the cross connector, and a sleeve connected to the supporting body is provided in the middle of the steel column.

[0013] As a preferred solution of the present invention, the support body includes a horizontal support tube and a support connecting plate connected to the middle of the horizontal support tube, and a plurality of diagonal braces are connected to each corner of the support connecting plate.

[0014] As a preferred solution of the present invention, the supporting body includes a damping plate and a core plate connected to both ends of the damping plate, a number of diagonal braces are connected to each corner of the core plate, and supporting steel pipes are provided at both ends of the core plate, which are connected to the sleeves of two adjacent steel columns. An energy-absorbing section for damping deformation is formed in the middle of the core plate, and stiffening ribs are formed on the energy-absorbing section for strengthening the structural strength of the energy-absorbing section.

[0015] As a preferred solution of the present invention, the connection between the diagonal brace and the cross connector, the connection between the sleeve and the steel column, the connection between the horizontal support pipe and the sleeve, the connection between the support connecting plate and the diagonal brace, the connection between the core plate and the damping plate, the connection between the core plate and the diagonal brace, and the connection between the support steel pipe and the sleeve are all connected by bolts.

[0016] As a preferred solution of the present invention, a flange plate is formed on the side of the main beam for covering the end of the out-of-plane steel beam, the end of the out-of-plane steel beam is connected to a web connecting plate that is connected to the web and flange plate of the main beam at the same time, and the end of the out-of-plane steel beam is provided with a transition plate for connecting the web connecting plate.

[0017] A design method based on a modular layered prefabricated low-rise steel structure system, based on the modular layered prefabricated low-rise steel structure system, comprises the following steps: Step S1: Establish a basic module and set the basic module value to X. Design the entire building structure according to the basic module value to ensure that the overall building size, total building height, building floor height, door and window openings, main beams, out-of-plane steel beams, and the distance between adjacent steel columns are all multiples of the basic module value. Step S2: Based on the standardized design of the basic modules, the building materials are standardized, and the standardized building materials are combined with the architectural drawings through coding to generate corresponding construction drawings; Step S3: Determine the quantity of standardized building materials according to the construction drawings and carry out industrialized production of the building materials.

[0018] Compared with the existing technology, by covering the ends of the out-of-plane steel beams on the side of the main beam, the continuous beam effect can be exerted, the deformation of the column can be coordinated, the internal force can be redistributed, the stress of the main beam and the out-of-plane steel beam is smaller, and the design difficulty of the main beam and the out-of-plane steel beam is reduced. Under the setting of the anti-test component, the lateral load received by the steel structure body can be borne, ensuring that the steel column only bears the vertical load, thereby improving the service stability of the steel column; Since the steel columns and beams are all axially loaded components, the cross-section of the steel columns and beams can be made as small as possible after the storey height is determined, reducing the difficulty of covering the main beams on the outer steel beams. All welds are factory-welded, bolted on-site, and assembled in layers. The lower layer serves as a construction platform for the upper layer, leaving much room for optimization in construction organization and coordination. Under the action of the cross connector, the connection node at the end of the steel column is deformed into a cross column structure, and bolts can be set in each compartment of the cross connector, thereby reducing the overall size of the cross connector, meeting the setting requirements of the modular structure, making the basic module as small as possible, and the overall structure can be more reasonably distributed in the basic module; The entire structure is connected by bolts, which greatly reduces the difficulty of installation and construction. All components are standardized and can be mass-produced. Full bolt assembly can achieve customized needs with fewer components and more combinations, which can meet different market needs and meet the requirements of industrial production. The advantages include clear structural force, simple component connection, and quick construction and installation. Since modular design is adopted in the design, the specifications of most components are relatively consistent, material procurement and processing are relatively simple, and it is convenient for industrialized production. Most components are processed in the factory, the degree of industrialization is relatively high, the processing quality can be guaranteed, and the construction period of on-site installation is short. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the main steel structure; Figure 2 It is a top view of the main steel structure; Figure 3 It is the side view of the main steel structure; Figure 4 It is a structural diagram of the main beam and out-of-plane steel beam; Figure 5 It is a schematic diagram of the connection between the main beam and the out-of-plane steel beam; Figure 6 It is a schematic diagram of the structure of the lateral-resisting member of the rigid structure; Figure 7 It is a schematic diagram of the anti-lateral component structure of the damping structure; Figure 8 It is a structural diagram of a cross connector; Figure 9 is a schematic diagram of the supporting main structure of the damping structure; Figure 10 It is the finite element analysis diagram of the damping structure support body; Figure 11 This is a comparison chart of the finite element hysteresis curves of the damping structure support body; Figure 12 It is a schematic diagram of the connection between steel column and steel beam components; Figure 13 It is the finite element analysis diagram of the steel column and steel beam assembly; Figure 14 It is a schematic diagram of the structure of the lateral-resisting member of the rigid structure; Figure 15 It is a schematic diagram of the anti-lateral component structure of the damping structure; Figure 16 It is the finite element analysis diagram of the lateral-resisting member of the rigid structure; Figure 17 It is the finite element analysis diagram of the lateral member of the damping structure; Figure 18 This is a schematic diagram of the installation of the floor; Figure numerals: steel structure main body 1, bottom foundation 11, floor slab 2, steel column 3, cross connector 31, cross stiffener 32, steel beam assembly 4, main beam 41, out-of-plane steel beam 42, stiffening plate 43, through hole 44, bolt connection hole 45, flange plate 46, web connection plate 47, transition plate 48, anti-lateral member 5, support main body 51, diagonal brace 52, sleeve 53, horizontal support pipe 54, support connection plate 55, damping plate 56, core plate 57, energy dissipation section 571, stiffening rib 572, support steel pipe 58. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] like Figures 1-18 As shown, a modular layered assembled low-rise steel structure system includes a steel structure body 1 and a floor slab 2 installed on the top of the steel structure body 1. The steel structure body 1 includes a number of steel columns 3 that only bear vertical loads and a steel beam assembly 4 installed on the top of the steel columns 3; the steel structure body 1 is provided with an anti-lateral member 5 for bearing the lateral load of the steel structure body 1, and the anti-lateral member 5 is connected between two adjacent steel columns 3; the steel beam assembly 4 includes a number of connected main beams 41 and a number of out-of-plane steel beams 42, and the ends of the out-of-plane steel beams 42 are arranged in a covering manner on the sides of the main beams 41.

[0022] The number of layers of the steel structure main body 1 is set according to actual needs. Each layer of the steel structure main body 1 is composed of steel columns 3 and steel beam components 4 installed on the top of the steel columns 3, and the steel columns 3 in different layers of the steel structure main body 1 are set independently.

[0023] In the steel structure body 1, the steel column 3 is only used to bear the vertical load generated by the steel structure body 1, while the anti-lateral member 5 is used to bear the lateral load generated by the structural body, thereby ensuring the stable setting of the steel column 3 under the action of only the vertical load and preventing the lateral load from affecting the stability of the steel column 3.

[0024] With the end of the out-of-plane steel beam 42 wrapped around the side of the main beam 41, the steel beam assembly 4 on the same layer forms an integral structure. When the main beam 41 or the out-of-plane steel beam 42 is subjected to force alone, the force received by the main beam 41 or the out-of-plane steel beam 42 is redistributed within the integral steel beam assembly 4, reducing the force received by the individual main beam 41 or the out-of-plane steel beam 42, thereby ensuring the stability of the main beam 41 and the out-of-plane steel beam 42.

[0025] The steel structure body 1 is composed of at least one layer of steel beam assemblies 4. The bottom of each layer of steel beam assemblies 4 is provided with several steel columns 3 for supporting the steel beam assemblies 4. The bottom of the steel structure body 1 is provided with a bottom foundation 11 connected to the bottom steel columns 3, and the bottom foundation 11 is provided with embedded anchor bolts connected to the bottom steel columns 3.

[0026] The bottom foundation 11 is a ground pile formed on the ground surface. The embedded anchor bolts are embedded in the casting process of the bottom foundation 11, so that the embedded anchor bolts are embedded in the top of the bottom foundation 11. The embedded anchor bolts are connected to the bottom of the steel column 3 to achieve a fixed connection between the bottom of the steel column 3 and the bottom foundation 11, so that the steel column 3 is fixed on the bottom foundation 11 under the support of the bottom foundation 11.

[0027] A cross connector 31 is provided at the end of the steel column 3, and a cross stiffener 32 connected to the underlying foundation 11 or the steel beam assembly 4 is provided at the end of the cross stiffener 31. Several bolts for fixing the steel column 3 are provided at the corners of the cross stiffener 32, and stiffening plates 43 corresponding to the steel columns 3 are formed in the main beam 41 and the out-of-plane steel beam 42.

[0028] The middle part of the cross connector 31 is a cross column structure, and the bolts are respectively located in the spacing area formed by the cross columns. Under the action of the cross stiffener 32, the bolts are set close to the cross column, and there is no need to set a circle of bolts on the outside, thereby reducing the size of the cross stiffener 32 as much as possible to meet the setting of a small-size bottom foundation 11 or steel beam assembly 4.

[0029] After the preparation of the steel column 3 is completed, a cross connector 31 corresponding to the cross section of the steel column 3 is set. The size of the cross connector 31 is slightly larger than the cross section of the steel column 3, and the cross connector 31 is pre-welded to the end of the steel column 3 in the factory. The two ends of the cross connector 31 are respectively formed with an end plate welded and fixed to the steel column 3 and a cross stiffener 32 connected to the steel beam assembly 4.

[0030] Under the action of the cross connector 31, the end of the steel column 3 is protected to a certain extent, thereby preventing the end of the steel column 3 from being deformed by stress during transportation or storage.

[0031] The cross stiffener 32 is arranged in abutment with the surface of the main beam 41 or the out-of-plane steel beam 42, and under the action of bolts, the connection between the cross stiffener 32 and the underlying foundation 11 or the steel beam assembly 4 is realized, thereby realizing the connection between the steel column 3 and the underlying foundation 11 or the steel beam assembly 4, and under the action of the bolts arranged at each edge corner of the cross stiffener 32, a stable connection between the steel column 3 and the underlying foundation 11 or the steel beam assembly 4 is realized.

[0032] The stiffening plate 43 is used to improve the structural strength of the underlying foundation 11 or the steel beam assembly 4 , thereby improving the connection stability between the steel column 3 and the underlying foundation 11 or the steel beam assembly 4 .

[0033] The main beam 41 and the outer steel beam 42 are provided with through holes 44 for passing the pipes. The main beam 41 and the outer steel beam 42 are also provided with bolt connection holes 45 for connecting the cross connector 31. The bolt connection holes 45 are used to correspond to the bolts on the cross connector 31. The number and size of the through holes 44 are set according to actual needs, and the size and number of the bolt connection holes 45 correspond to the size and number of the bolts. Under the action of the through holes 44, the overall weight of the main beam 41 and the out-of-plane steel beam 42 is reduced, which makes it easier for the steel column 3 to support the main beam 41 and the out-of-plane steel beam 42. At the same time, the through holes 44 also facilitate the installation of electromechanical pipelines.

[0034] The anti-lateral member 5 includes a supporting body 51 and a plurality of diagonal braces 52 hingedly connected to the supporting body 51 . The diagonal braces 52 are hingedly connected to the cross connector 31 . A sleeve 53 connected to the supporting body 51 is provided in the middle of the steel column 3 .

[0035] The anti-lateral member 5 can be divided into a rigid structural anti-lateral member 5 and a damping structural anti-lateral member 5 according to the difference of the supporting body 51 , wherein a damping plate 56 capable of damping deformation is formed inside the damping structural anti-lateral member 5 .

[0036] Four inclined diagonal braces 52 are installed between adjacent steel columns 3. The four inclined diagonal braces 52 respectively correspond to the connection points between the adjacent steel columns 3 and the underlying foundation 11 or the steel beam assembly 4. Two adjacent steel columns 3 and the underlying foundation 11 or the steel beam assembly 4 are connected to form a frame structure. The four inclined diagonal braces 52 are respectively set corresponding to the four inner corners of the frame structure. The frame structure is supported by the four inclined diagonal braces 52.

[0037] One of the side plates of the cross connector 31 is connected to the end of the diagonal brace 52 by bolts, thereby achieving a fixed connection between the diagonal brace 52, the cross connector 31, and the steel column 3, and the sleeve is also fixedly connected to the middle of the steel column 3 by bolts.

[0038] The support body 51 includes a horizontal support tube 54 and a support connecting plate 55 connected to the middle of the horizontal support tube 54. Several diagonal braces 52 are connected to the corners of the support connecting plate 55. The two ends of the horizontal support tube 54 are respectively connected to two sleeves sleeved on two adjacent steel columns 3, and the horizontal support tube 54 and the sleeves are also connected by bolts.

[0039] The supporting body 51 includes a damping plate 56 and a core plate 57 connected to both ends of the damping plate 56. A number of diagonal braces 52 are connected to the corners of the core plate 57. Both ends of the core plate 57 are provided with supporting steel pipes 58 connected to the sleeves 53 of the two adjacent steel columns 3. An energy-absorbing section 571 for damping deformation is formed in the middle of the core plate 57, and stiffening ribs 572 are formed on the energy-absorbing section 571 for strengthening the structural strength of the energy-absorbing section 571.

[0040] A hollow damping groove is formed in the middle of the damping plate 56. The two core plates 57 connected to the two ends of the damping plate 56 are independently arranged, and the two core plates 57 do not interfere with each other. The two core plates 57 are connected to the damping plate 56 by bolts to support the damping plate 56. When the core plate 57 is subjected to force, the force is transferred to the damping plate 56, and the damping effect is achieved under the action of the force deformation of the damping plate 56.

[0041] The diagonal braces 52 are connected to the corners of the core plate 57 by bolts, and the two core plates 57 are connected to two diagonal braces 52. When the steel column 3 is subjected to lateral force, the lateral load is transferred to the core plate 57 through the diagonal braces 52, and the lateral load is transferred to the damping plate 56 under the action of the core plate 57. The damping plate 56 damps the lateral force, thereby ensuring that the steel column 3 is only subjected to vertical load.

[0042] The support steel pipe 58 is connected to the core plate 57 by welding, and the support steel pipe 58 is connected to the sleeve by bolts. The support steel pipe 58 is also used to transfer the lateral load to the core plate 57, and transfer the lateral force to the damping plate 56 through the core plate 57. The welding of the core plate 57 and the support steel pipe 58 is carried out in the factory.

[0043] The supporting body 51 composed of the supporting connecting plate 55 and the horizontal supporting tube 54 is used to realize the rigid support between adjacent steel columns 3, while the supporting body 51 with the core plate 57 and the damping plate 56 is used to realize the energy dissipation support between adjacent steel columns 3. Both supporting bodies 51 serve as the anti-side components 5 of the steel columns 3. The positions of the two supporting bodies 51 in the steel structure body 1 can be selected and set according to actual needs.

[0044] The connection between the diagonal brace 52 and the cross connector 31, the connection between the sleeve 53 and the steel column 3, the connection between the horizontal support pipe 54 and the sleeve 53, the connection between the support connecting plate 55 and the diagonal brace 52, the connection between the core plate 57 and the damping plate 56, the connection between the core plate 57 and the diagonal brace 52, and the connection between the support steel pipe 58 and the sleeve are all connected by bolts.

[0045] A flange plate 46 is formed on the side of the main beam 41 for covering the end of the out-of-plane steel beam 42. The end of the out-of-plane steel beam 42 is connected to a web connecting plate 47 that is connected to the web of the main beam 41 and the flange plate 46 at the same time, and a transition plate 48 is provided at the end of the out-of-plane steel beam 42 for connecting the web connecting plate 47.

[0046] The transition plate 48 is provided with a clamping plate on both sides for connecting the out-of-plane steel beam 42, and the clamping plate is provided with bolts for connecting the transition plate 48 and the out-of-plane steel beam 42. The out-of-plane steel beam 42 and the main beam 41 can both be I-beam structures. The flange plate 46 of the main beam 41 is arranged horizontally. Under the action of the upper and lower flange plates 46 of the main beam 41, the end of the out-of-plane steel beam 42 is covered, and the flange plate 46 located at the bottom of the main beam 41 supports the end of the out-of-plane steel beam 42, and the transition plate 48 is provided with bolts connected to the flange plate 46 and the web of the main beam 41, so that the main beam 41 covers the end of the out-of-plane steel beam 42 while the main beam 41 is connected to the end of the out-of-plane steel beam 42 by bolts.

[0047] When the steel columns 3 are layered according to the steel structure body 1 and the main beams 41 on the same layer and the out-of-plane steel beams 42 can be connected in an enveloping manner, the installation order of the overall steel structure body 1 is also in layer order. This method has two advantages. First, the single component will not be too large, and some places with limited construction will not be affected by the inability to enter large-scale lifting equipment to affect the installation; second, some components are relatively light and can be manually operated; third, when the first layer is completed, it reaches a stable state. When constructing the second or third layer, the first layer can carry out cross-construction of mechanical and electrical or interior decoration, which can improve construction efficiency and facilitate construction organization.

[0048] A design method based on a modular layered assembled low-rise steel structure system includes the following steps: Step S1: Establish a basic module and set the basic module value to X. Design the entire building structure according to the basic module value to ensure that the overall building size, total building height, building floor height, door and window openings, main beams 41, out-of-plane steel beams 42, and distances between adjacent steel columns 3 are all multiples of the basic module value. Step S2: Based on the standardized design of the basic modules, the building materials are standardized, and the standardized building materials are combined with the architectural drawings through coding to generate corresponding construction drawings; Step S3: Determine the quantity of standardized building materials according to the construction drawings and carry out industrialized production of the building materials.

[0049] For example, if the basic modulus value is set to 600mm, the distance between bays or steel columns 3, the depth or span, the width of door and window openings, etc. should adopt the basic modulus series and the horizontal expansion modulus series. The horizontal expansion modulus series adopts multiples of the basic modulus such as 2nx600mm and 3nx600mm. On the inside of the building, the height, storey height and door and window opening height of the building should adopt the vertical basic modulus (600mm) and the vertical expansion modulus series, and the vertical expansion modulus adopts nx600mm, a multiple of the basic modulus. The cross-sectional dimensions of the main beam 41, the out-of-plane steel beam 42, the steel column 3, the wall, the plate and other components should adopt The vertical expansion module series is nx600, a multiple of the basic module. The main beam 41 and the out-of-plane steel beam 42 should have reserved bolt connection holes 45 and through holes 44 according to the module. The interface dimensions of the structural nodes and components adopt the sub-module series nx600 / 2, nx600 / 5, and nx600 / 10. It should be ensured that the position of each component is located within the module grid. Partition walls, fixed cabinets, equipment, pipe wells and other components adopt the basic module grid. Construction methods, interfaces, filling parts and other sub-components should adopt sub-module grids. The preferred sizes of sub-modules should be nx600 / 2, nx600 / 5, and nx600 / 10.

[0050] After modularization, structural components can be designed in a standardized manner, improving component manufacturing efficiency and enabling standardized factory production. Construction sites simply need to reliably install standardized products in designated locations according to architectural drawings, significantly increasing the degree of industrialization and construction efficiency.

[0051] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is to be embodied in the widest possible manner consistent with the principles and novel features disclosed herein.

[0052] Although this document frequently uses the following terms in the figures: steel structure body 1, bottom foundation 11, floor slab 2, steel column 3, cross connector 31, cross stiffener 32, steel beam assembly 4, main beam 41, out-of-plane steel beam 42, stiffener 43, through hole 44, bolt connection hole 45, flange plate 46, web connection plate 47, transition plate 48, lateral member 5, support body 51, diagonal brace 52, sleeve 53, horizontal support tube 54, support connection plate 55, damping plate 56, core plate 57, energy dissipation section 571, stiffener 572, support steel tube 58, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A modular layered assembled low-rise steel structure system, comprising a steel structure main body (1) and a floor slab (2) installed on the top of the steel structure main body (1), wherein the steel structure main body (1) comprises a plurality of steel columns (3) that only bear vertical loads and a steel beam assembly (4) installed on the top of the steel columns (3); characterized in that: The steel structure main body (1) is provided with a lateral resistance member (5) for bearing the lateral load of the steel structure main body (1), and the lateral resistance member (5) is connected between two adjacent steel columns (3); the steel beam assembly (4) includes a plurality of connected main beams (41) and a plurality of out-of-plane steel beams (42), and the ends of the out-of-plane steel beams (42) are arranged in a covering manner on the sides of the main beams (41).

2. A modular layered assembled low-rise steel structure system according to claim 1, characterized in that: The steel structure main body (1) is composed of at least one layer of steel beam assemblies (4), and a plurality of steel columns (3) for supporting the steel beam assemblies (4) are provided at the bottom of each layer of steel beam assemblies (4). The bottom of the steel structure main body (1) is provided with a bottom foundation (11) connected to the bottom steel columns (3).

3. A modular layered assembled low-rise steel structure system according to claim 2, characterized in that: The ends of the steel columns (3) are provided with cross connectors (31), and the ends of the cross connectors (31) are provided with cross stiffening plates (32) connected to the bottom foundation (11) or the steel beam assembly (4). A plurality of bolts for fixing the steel columns (3) are provided at the corners of the cross stiffening plates (32), and stiffening plates (43) corresponding to the steel columns (3) are formed in the main beam (41) and the out-of-plane steel beam (42).

4. The modular layered assembled low-rise steel structure system according to claim 1 is characterized in that: Through holes (44) for passing pipes are reserved on the main beam (41) and the out-of-plane steel beam (42). Bolt connection holes (45) for connecting the cross connector (31) are also reserved on the main beam (41) and the out-of-plane steel beam (42).

5. The modular layered assembled low-rise steel structure system according to claim 3 is characterized in that: The anti-lateral member (5) comprises a supporting body (51) and a plurality of diagonal braces (52) hingedly connected to the supporting body (51); the diagonal braces (52) are hingedly connected to the cross connector (31); and a sleeve (53) connected to the supporting body (51) is provided in the middle of the steel column (3).

6. The modular layered assembled low-rise steel structure system according to claim 5, characterized in that: The support body (51) comprises a horizontal support tube (54) and a support connecting plate (55) connected to the middle of the horizontal support tube (54), and a plurality of diagonal braces (52) are connected to the corners of the support connecting plate (55).

7. The modular layered assembled low-rise steel structure system according to claim 5 is characterized in that: The supporting body (51) includes a damping plate (56) and a core plate (57) connected to both ends of the damping plate (56), a plurality of diagonal braces (52) are connected to each corner of the core plate (57), and support steel pipes (58) are provided at both ends of the core plate (57) and are connected to the sleeves (53) of two adjacent steel columns (3). An energy-absorbing section (571) for damping deformation is formed in the middle of the core plate (57), and stiffening ribs (572) for strengthening the structural strength of the energy-absorbing section (571) are formed on the energy-absorbing section (571).

8. A modular layered assembled low-rise steel structure system according to claim 6 or 7, characterized in that: The connection between the diagonal brace (52) and the cross connector (31), the connection between the sleeve (53) and the steel column (3), the connection between the horizontal support pipe (54) and the sleeve (53), the connection between the support connecting plate (55) and the diagonal brace (52), the connection between the core plate (57) and the damping plate (56), the connection between the core plate (57) and the diagonal brace (52), and the connection between the support steel pipe (58) and the sleeve are all connected by bolts.

9. The modular layered assembled low-rise steel structure system according to claim 1 is characterized in that: The side of the main beam (41) is formed with a flange plate (46) for covering the end of the out-of-plane steel beam (42), the end of the out-of-plane steel beam (42) is connected to a web connecting plate (47) connected to the web of the main beam (41) and the flange plate (46), and the end of the out-of-plane steel beam (42) is provided with a transition plate (48) for connecting to the web connecting plate (47).

10. A design method based on a modular layered prefabricated low-rise steel structure system, based on the modular layered prefabricated low-rise steel structure system according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step S1: Establish a basic module and set the basic module value to X, and design the entire building structure according to the basic module value to ensure that the overall building size, total building height, building floor height, door and window openings, main beams (41), out-of-plane steel beams (42), and distances between adjacent steel columns (3) are all multiples of the basic module value; Step S2: Based on the standardized design of the basic modules, the building materials are standardized, and the standardized building materials are combined with the architectural drawings through coding to generate corresponding construction drawings; Step S3: Determine the quantity of standardized building materials according to the construction drawings and carry out industrialized production of the building materials.

Images