A composite building structure of steel structure composite modules and cast-in-place concrete

Abstract

The present invention discloses a composite building structure of steel structure and cast-in-situ concrete. The building structure is assembled from modular structures, wherein the modular structures include sub-columns, sub-beams, load-bearing units, and prefabricated units. Connecting portions are provided on the sub-columns, and the sub-columns of laterally adjacent modular structures are connected as a whole through the connecting portions to form a column frame, in which concrete is poured. The ends of the sub-beams are respectively fixedly connected to two sub-columns, and the sub-beams of laterally adjacent modular structures form a beam frame, in which concrete is poured. The load-bearing units are respectively connected to the sub-columns and sub-beams, and cast-in-situ concrete is filled between the load-bearing units of laterally adjacent modular structures. The prefabricated units are respectively connected to the load-bearing units and sub-beams. The present invention combines steel structure, prefabricated components, and cast-in-situ concrete to reduce the weight of the modular structure. The connection strength between the modular structures is enhanced by cast-in-situ concrete and reinforcement, thereby improving the building's integrity and achieving the combination of concrete structure and steel structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of modular buildings, and in particular relates to a composite building structure composed of steel structure modules and cast-in-place concrete. Background Art

[0002] Box-type modular buildings are a type of prefabricated building, characterized by a high degree of prefabrication, minimal on-site construction workload, and short project deadlines. As the manufacturing technology for prefabricated steel structures matures, demands are rising for higher levels of prefabrication, larger interior spaces, and stronger earthquake resistance. For box-type modular buildings, a modular connection structure with sufficient strength, a compact structure, and adequate operating space is particularly important. However, current technical limitations of modular connection structures make it difficult to achieve the required connection strength between modules.

[0003] Existing modular buildings include prefabricated steel structure modules and concrete modules. Prefabricated steel structure modules are usually connected by bolts or plug-ins, which makes it difficult to meet building strength requirements in extreme environments (earthquakes, typhoons). Compared with concrete structures, steel structure module buildings have lower strength and shorter service life. Concrete modules are usually connected by wet method, that is, pouring concrete between adjacent modules to achieve connection. However, the overall mass of concrete modules is large and difficult to hoist. In addition, there are no beams, columns and other components in the building, and the support is based on the module's own bearing capacity. The building strength is still lower than that of traditional building structures. Summary of the Invention

[0004] The purpose of the present invention is to provide a composite building structure of steel structure composite modules and cast-in-place concrete, so as to solve the problems of low connection strength, short service life, difficult on-site lifting and difficulty in meeting the building strength requirements in extreme environments in the existing modular buildings in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A combined building structure of steel structure composite modules and cast-in-situ concrete is assembled from a module structure, wherein the module structure includes sub-columns, sub-beams, load-bearing units and prefabricated units; the sub-columns are arranged at vertical intervals and are provided with connecting parts on them, and the sub-columns of laterally adjacent module structures are connected as a whole through the connecting parts to form a column frame, and concrete is poured in the column frame to form the columns of the building structure; the sub-beams are arranged along the top and bottom edges of the module structure, and their two ends are respectively fixedly connected to the two sub-columns, and the sub-beams of laterally adjacent module structures together form a beam frame, and concrete is poured in the beam frame to form the beams of the building structure; the load-bearing units are respectively connected to the sub-columns and sub-beams, and cast-in-situ concrete is filled between the load-bearing units of laterally adjacent module structures to form the load-bearing walls of the building structure; the prefabricated units are arranged at least on one side of the module structure and are respectively connected to the load-bearing unit and the sub-beams, and the prefabricated units of laterally adjacent module structures together form a prefabricated component.

[0007] Furthermore, the load-bearing unit includes side panels and protrusions; the side panels are arranged corresponding to the load-bearing walls and are respectively connected to the sub-columns and sub-beams; the protrusions are arranged on the surface of the side panels facing the outside of the module structure.

[0008] Furthermore, the sub-column is an angle steel structure, and the inner corner of the angle steel structure faces the outside of the module structure; and overlapping steel bars are welded on the surface of the sub-column.

[0009] Furthermore, transverse reinforcement and longitudinal reinforcement are provided between the load-bearing units of the module structure adjacent in the transverse direction; the transverse reinforcement is connected to the lap reinforcement on the sub-column; and the longitudinal reinforcement is connected to the longitudinal reinforcement adjacent in the longitudinal direction.

[0010] Furthermore, column internal vertical reinforcements are provided inside the column frame, and the column internal vertical reinforcements are connected to the longitudinally adjacent column internal vertical reinforcements through additional reinforcements.

[0011] Furthermore, the connecting parts are connecting plates arranged at intervals, and the connecting plates are connected by bolts.

[0012] Furthermore, it also includes a top plate and a bottom plate; the module structure includes a top plate unit and a bottom plate unit; the top plate unit is a steel truss floor deck; the bottom plate unit is a reinforced concrete layer, and ground keels are arranged at intervals inside it.

[0013] Furthermore, the prefabricated components are combined lightweight walls; the prefabricated units are divided into sub-units and mother units; and the transversely adjacent module structures are respectively installed with sub-units and mother units.

[0014] Furthermore, the combined lightweight wall is a light steel keel wall, the sub-unit is a decorative panel; the mother unit includes a decorative panel and a keel frame, and the sub-unit and the mother unit are assembled to form a light steel keel wall.

[0015] Furthermore, the combined lightweight wall is a light steel keel wall, the mother unit is a light steel keel wall; the sub-unit has a reserved installation opening, and the mother unit is embedded in the reserved installation opening of the sub-unit. The present invention has the following beneficial effects:

[0016] 1. The present invention provides a composite building structure of steel structure and cast-in-place concrete, which combines steel structure, prefabricated components and cast-in-place concrete to reduce the weight of the module structure. The connection strength between the module structures is enhanced by cast-in-place concrete and reinforcement, thereby improving the integrity of the building, realizing the combination of concrete structure and steel structure, and extending the service life of the building.

[0017] 2. The present invention provides a combined building structure of steel structure composite modules and cast-in-place concrete. Sub-columns and sub-beams are arranged on the module structure. The sub-columns and sub-beams are spliced ​​and concrete is poured to form the columns and beams of the building structure respectively. This enables the module building to obtain the same connection strength and bearing capacity as the concrete building, and is easy to install and has high construction efficiency.

[0018] 3. The present invention provides a combined building structure of steel structure composite modules and cast-in-place concrete. The prefabricated components use light steel keel walls, which can reduce the amount of concrete pouring on site, reduce the lifting weight, and improve the construction speed.

[0019] 4. The present invention provides a composite steel structure module and cast-in-place concrete combined building structure, in which sub-columns and sub-beams are provided on the module structure to improve the module structure's own bearing capacity and facilitate its hoisting and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the splicing of the module structure of the same layer involved in the present invention;

[0021] Figure 2 A schematic diagram of a module structure according to the present invention;

[0022] Figure 3 A schematic plan view of the positions of the columns involved in the present invention;

[0023] Figure 4 For the present invention Figure 1 The cross-sectional view at AA in the figure;

[0024] Figure 5 For the present invention Figure 1 Cross-sectional view at BB in the figure.

[0025] In the figure: 1-sub-column, 2-sub-beam, 3-load-bearing unit, 4-prefabricated unit, 5-top plate, 6-bottom plate. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] like Figure 1-5 As shown, the present invention provides a steel structure composite module and cast-in-situ concrete combined building structure, which is assembled from several module structures. The module structure includes sub-columns 1, sub-beams 2, load-bearing units 3, prefabricated units 4, top plate units and bottom plate units; the sub-columns 1 are arranged at intervals in the vertical direction, and the sub-columns 1 of the adjacent module structures in the horizontal direction together form a column frame, concrete is poured in the column frame, and the column frame and the cast-in-situ concrete together form the columns of the building structure, and the columns between different floors are connected as a whole by cast-in-situ concrete; the sub-beams 2 are arranged along the edges of the top and bottom surfaces of the module structure, and their two ends are respectively fixed to the two sub-columns 1, and the sub-beams 2 of the adjacent module structures in the horizontal direction are connected together. The same component forms a beam frame, concrete is poured into the beam frame, and the beam frame and the cast-in-place concrete together form the beams of the building structure. The beams on the same layer are connected as a whole by cast-in-place concrete; the load-bearing units 3 are respectively connected to the sub-columns 1 and the sub-beams 2, and the load-bearing units 3 of the laterally adjacent module structures are filled with cast-in-place concrete. The load-bearing units 3 and the cast-in-place concrete together form the load-bearing walls of the building structure; the prefabricated units 4 are arranged on at least one side of the module structure, and are respectively connected to the load-bearing units 3 and the sub-beams 2, and the prefabricated units 4 of the laterally adjacent module structures together form a prefabricated component; the top plate 5 unit and the bottom plate 6 unit are respectively arranged at the top and bottom of the module structure.

[0028] The module structure is a rectangular structure. The sub-columns 1 and sub-beams 2 together form a rectangular frame. The sub-columns 1 are arranged at the vertical sides of the rectangular structure, and the sub-beams 2 are arranged at the horizontal sides of the rectangular structure.

[0029] The cross-section of the column frame located inside the building structure is approximately a closed figure; the cross-section of the main frame located at the edge of the building structure can be a closed figure or an open figure.

[0030] The sub-columns 1 are angle steel structures. The inner corners of the sub-column angles face outward from the module structure. Column frames at the intersection of two walls include one sub-column 1; those at the intersection of three walls include two sub-columns 1; and those at the intersection of four walls include four sub-columns 1. These column frames have a roughly rectangular cross-section. Stiffening ribs are installed at intervals along the inner corners of the sub-columns 1 to enhance their structural strength.

[0031] As a preferred embodiment, a connecting portion is provided on the sub-column 1, and the sub-columns 1 of the laterally adjacent module structures are connected as a whole through the connecting portion. The connecting portion is a connecting plate arranged at intervals, and the connecting plates are connected by bolts; the connecting portion can also be steel bars arranged at intervals, or can be a plug-in structure that cooperates with each other.

[0032] The cross section of the sub-column 1 can also be set to an arc, an acute angle, an obtuse angle, etc.

[0033] The sub-crossbeam 2 is an angle steel or an I-beam. When the sub-crossbeam 2 is an angle steel, its inner corner faces the outside of the module structure. The beam frame includes two sub-crossbeams 2.

[0034] The load-bearing units 3 consist of side panels and protrusions. The side panels are positioned corresponding to the load-bearing walls and are connected to the sub-columns 1 and sub-beams 2, respectively. The protrusions are located on the outer surfaces of the side panels facing the module structure. Concrete is poured between the load-bearing units 3 of adjacent modules. The side panels can be constructed from cement, gypsum, metal, or other interior panels. The protrusions are constructed from steel bars or steel trusses, which are fixed to the side panels. Tie bars are used to connect the load-bearing units 3 of adjacent modules.

[0035] Horizontal and longitudinal reinforcement are installed between the two load-bearing units 3. The horizontal reinforcement connects to the adjacent column frames, while the longitudinal reinforcement connects to the longitudinal reinforcement of the upper and lower modular structures, strengthening the integrity of the modular structures. If the number of longitudinal reinforcements does not meet the calculation requirements, channel steel is installed inside the load-bearing wall. The channel steel seals the outer end of the load-bearing wall away from the column 1, further connecting the two load-bearing units 3 and enhancing their bearing strength.

[0036] Internal vertical reinforcement is installed within column 1 and connected to adjacent vertical reinforcement via additional reinforcement. Overlap reinforcement is welded to the surface of sub-columns 1. These overlap reinforcements are arranged horizontally and evenly spaced vertically, with spacing that meets calculation and construction requirements. Sub-columns 1 are connected to the transverse reinforcement via overlap reinforcement. Connecting reinforcement is welded to the surface of sub-columns 1 and connected to adjacent sub-columns 1 via reinforcing bars.

[0037] The prefabricated components are assembled lightweight walls, preferably light steel stud walls, which can be filled with rock wool. The prefabricated components are installed on at least one side of the modular structure. The prefabricated units 4 are divided into sub-units and parent units, which are assembled to form the light steel stud wall. Sub-units and parent units are installed in adjacent modules, and the sub-units and parent units are connected to form the prefabricated components.

[0038] As a preferred embodiment, the sub-unit is a decorative panel, and the parent unit includes the decorative panel and a keel frame.

[0039] As a preferred embodiment, the mother unit is a light steel frame wall, including a keel frame and decorative panels arranged on both sides of the keel frame, and the sub-unit has a reserved installation opening, and the mother unit is embedded in the reserved installation opening of the sub-unit.

[0040] The top plate 5 is a steel truss floor deck. After being installed in place, concrete is poured to serve as the top plate of the building structure.

[0041] The bottom plate 6 is a reinforced concrete layer, and ground keels are arranged at intervals inside the bottom plate 6. Both ends of the ground keels are fixedly connected to the sub-crossbeams 2. Preferably, the ground keels are angle steel structures.

[0042] Mechanical and electrical pipelines, windows, pipes and other components can be prefabricated in the factory and combined with the modular structure.

[0043] When the side of the modular structure serves as the outer side of the building structure, the side is not assembled with other modular structures, and the load-bearing unit 3 in the side is the same as the load-bearing wall structure, and the prefabricated unit 4 in the side is the same as the prefabricated component structure.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A composite building structure of steel structure modules and cast-in-place concrete, characterized by: The modular structure is assembled, and the modular structure includes sub-columns (1), sub-beams (2), load-bearing units (3) and prefabricated units (4); the sub-columns (1) are arranged at intervals in vertical direction, and a connecting portion is arranged on the sub-columns (1) of the transversely adjacent modular structures, and the sub-columns (1) are connected as a whole through the connecting portion to form a column frame, and concrete is poured into the column frame to form a column of the building structure; the sub-beams (2) are arranged along the edges of the top and bottom surfaces of the modular structure, and the two ends thereof are respectively fixedly connected to the two sub-columns (1), and the sub-beams (2) of the transversely adjacent modular structures together form a beam frame, and concrete is poured into the beam frame to form a beam of the building structure; the load-bearing units (3) are respectively connected to the sub-columns (1) and the sub-beams (2), and cast-in-situ concrete is filled between the load-bearing units (3) of the transversely adjacent modular structures to form a load-bearing wall of the building structure; the prefabricated units (4) are arranged on at least one side of the modular structure, and are respectively connected to the load-bearing unit (3) and the sub-beams (2), and the prefabricated units (4) of the transversely adjacent modular structures together form a prefabricated component; The sub-column (1) is an angle steel structure, the inner corner of the angle steel structure faces the outside of the module structure; the surface of the sub-column (1) is welded with overlapping steel bars; Transverse and longitudinal reinforcements are also provided between the two load-bearing units. The transverse reinforcements are connected to the adjacent column frames; the longitudinal reinforcements are connected to the longitudinal reinforcements of the upper and lower module structures; and the transverse reinforcements are connected to the lap reinforcements on the sub-columns. Channel steel is arranged inside the load-bearing wall, and the channel steel seals the outer end of the load-bearing wall away from the column, thereby further connecting the two load-bearing units.

2. The steel structure composite module and cast-in-place concrete combined building structure according to claim 1, characterized in that: The load-bearing unit (3) comprises a side panel and a protrusion; the side panel is arranged corresponding to the load-bearing wall and is respectively connected to the sub-column (1) and the sub-beam (2); the protrusion is arranged on the surface of the side panel facing the outside of the module structure.

3. The steel structure composite module and cast-in-place concrete combined building structure according to claim 1, characterized in that: The column frame is provided with internal vertical reinforcements, and the internal vertical reinforcements are connected with the longitudinally adjacent internal vertical reinforcements of the columns through additional reinforcements.

4. The steel structure composite module and cast-in-place concrete combined building structure according to claim 1, characterized in that: The connecting parts are connecting plates arranged at intervals, and the connecting plates are connected by bolts.

5. The steel structure composite module and cast-in-place concrete combined building structure according to claim 1, characterized in that: It also includes a top plate (5) and a bottom plate (6); the module structure includes a top plate unit and a bottom plate unit; the top plate unit is a steel truss floor deck; the bottom plate unit is a reinforced concrete layer, and ground keels are arranged at intervals inside the reinforced concrete layer.

6. The steel structure composite module and cast-in-place concrete combined building structure according to claim 1, characterized in that: The prefabricated components are combined lightweight walls; the prefabricated units (4) are divided into sub-units and mother units; and the sub-units and mother units are respectively installed in the laterally adjacent module structures.

7. The steel structure composite module and cast-in-place concrete combined building structure according to claim 6, characterized in that: The combined lightweight wall is a light steel keel wall, the sub-unit is a decorative panel; the mother unit includes a decorative panel and a keel frame, and the sub-unit and the mother unit are assembled to form a light steel keel wall.

8. The steel structure composite module and cast-in-place concrete combined building structure according to claim 6, characterized in that: The combined lightweight wall is a light steel keel wall, and the mother unit is a light steel keel wall; the sub-unit has a reserved installation opening, and the mother unit is embedded in the reserved installation opening of the sub-unit.

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