Steel-concrete combined modular building structure system and assembly method thereof

Abstract

The invention discloses a steel-concrete combined modular building structure system and an assembly method thereof, the building structure system comprises a plurality of building modules and a cast-in-place shear wall core tube, the plurality of building modules are distributed around the cast-in-place shear wall core tube, and the plurality of building modules are connected with the cast-in-place shear wall core tube through hinged steel beams. All building modules are standardized modules and are prefabricated in a factory by adopting standardized parts, connecting nodes and assembling clamps, structural members, electromechanical pipelines, interior and exterior decoration and the like can be assembled and integrated into a complete module in the factory, and most construction operations are completed in the factory and are not interfered by environmental factors; meanwhile, the module and the cast-in-place part are connected through the hinged steel beams, field welding operation is omitted, and construction time and labor cost are greatly saved.

Description

Technical Field

[0001] The invention belongs to the field of modular buildings, and in particular relates to a steel-concrete combined modular building structure system and an assembly method thereof. Background Art

[0002] At present, the commonly used structural systems of prefabricated buildings in China are mainly prefabricated frame structures, prefabricated shear wall structures, prefabricated frame-shear wall structures and prefabricated steel structures. The construction process of prefabricated frame structures is simpler than other prefabricated structures, but their seismic performance and overall stability are relatively poor, the applicable height of buildings is limited, and the construction efficiency and connection quality reliability of the "wet" connection structure commonly used in beams and columns need to be further optimized and improved.

[0003] The seismic performance and overall stability of the prefabricated shear wall structure are good, but the shear wall limits the building plan layout and is difficult to meet the functional requirements of large-space buildings. In addition, the amount of concrete used is large, which greatly increases the weight of the structure. The prefabricated frame-shear wall structure combines the advantages of the frame and the shear wall. It has the flexibility of the frame structure and the lateral force resistance of the shear wall structure. However, the middle cylinder of the structure needs to be cast in place and has a large rigidity. There are many types of prefabricated components, and the prefabricated components are connected with the cast-in-place components, which increases the difficulty of construction and installation, and the industrialization efficiency is not high. The prefabricated steel structure has a high degree of industrialization and a short construction period; and the steel components can be recycled, which is in line with the green development direction of the construction industry. However, steel has problems with fire prevention and corrosion resistance; and the cost of steel is high, which to a certain extent hinders the promotion and application of prefabricated steel structures.

[0004] There is another form of building construction at present: modular construction. Modular construction has been mainly used in residential buildings, and also has good application scenarios in hotels, offices, schools and medical buildings. At present, modular buildings mainly include concrete modules and steel structure modules, and there are not many steel-concrete composite module building products. Concrete modular buildings have the advantages of high integration and good durability, but they also have problems such as heavy weight, large amount of on-site steel reinforcement work, and shear wall formwork, which leads to low on-site construction efficiency and high construction costs. Steel structure modular buildings have problems such as limited construction height, large amount of steel, and high enclosure costs, which also limit their scope of application. Summary of the invention

[0005] The purpose of the present invention is to provide a steel-concrete combined modular building structure system and an assembly method thereof, in which structural members, electromechanical pipelines, interior and exterior decorations, etc. can be assembled in a factory to form a complete module, and most of the construction work is completed in the factory without being affected by environmental factors; at the same time, the module is connected to the cast-in-place part by an articulated steel beam, eliminating on-site welding operations, greatly saving construction time and labor costs.

[0006] The present invention is implemented as follows: a steel-concrete composite modular building structure system includes multiple building modules and a cast-in-place shear wall core tube, wherein the multiple building modules are distributed around the cast-in-place shear wall core tube, and the multiple building modules are connected to the cast-in-place shear wall core tube through hinged steel beams; the multiple building modules are all standardized modules, which are prefabricated in a factory using standardized components, connection nodes and assembly fixtures.

[0007] Furthermore, the wall of the building module includes a conventional wall and a short wall; square columns are arranged at both ends of the conventional wall, steel plates are welded to the sides of the square columns of the conventional wall, and the steel mesh and cross supports inside the conventional wall are welded to the steel plates on both sides, wherein the cross supports are used to provide hoisting strength, and at the same time, cutting and removal are avoided after hoisting is completed, and the cross supports are retained in the wall to provide module structural strength;

[0008] The conventional wall is installed with non-dismantling cement-based formwork on both the inner and outer surfaces, the non-dismantling cement-based formwork is connected together through the connecting angle code on the inner side of the wall, and is fixed to the cross support inside the wall through anchor bolts;

[0009] The conventional wall is provided with two steel plate trusses at the top and bottom, respectively, to strengthen the connection of the non-dismantling cement-based formwork on both sides and enhance the overall performance of the wall; holes are opened at a certain interval on the non-dismantling cement-based formwork, and countersunk tension screws are provided to prevent the formwork from expanding during pouring;

[0010] Square columns are also arranged at both ends of the short wall, but the length between the columns is smaller than the side length of the square columns; steel tie bars are welded at a certain distance between the square columns of the short wall, and the non-dismantling cement-based formworks on both sides are fixed to the steel tie bars by self-tapping screws.

[0011] Furthermore, two adjacent building modules in the horizontal direction are connected by a steel mesh, and the steel mesh is composed of a plurality of annular steel bars and two vertical steel bars; concrete is poured in the gap between the two building modules.

[0012] Furthermore, the building structure system also includes a bottom cast-in-place layer, in which double rows of vertical longitudinal bars are pre-embedded at a certain distance at the position corresponding to the wall of the building module, and the vertical longitudinal bars are anchored in the gap between the steel mesh and the cross support of the building module; large-diameter steel bars are pre-embedded in the bottom cast-in-place layer corresponding to the position of the square column of the building module, and transverse auxiliary steel bars are arranged on the exposed part of the large-diameter steel bars to enhance the compression and shear resistance of the concrete at the connection part.

[0013] Furthermore, the square tube columns of two vertically adjacent building modules are connected by nesting the vertical connecting core columns in the square tube columns; the walls of two vertically adjacent building modules are connected by placing double rows of vertical dowels on site.

[0014] In order to achieve the above-mentioned object of the invention, the present invention also provides an assembly method of a steel-concrete combined modular building structure system, which assembly method at least comprises the following steps:

[0015] Building module assembly process:

[0016] It includes the installation of the module base plate, the installation of the single wall, the welding of the four walls, the installation of the bay window, the installation of the floor decking, the exterior decoration, and the interior decoration and mechanical and electrical installation.

[0017] Structural system assembly process:

[0018] It includes positioning, checking the elevation of the board surface and installing module gaskets, installing module horizontal limiters, constructing the module seat slurry layer, hoisting the modules, sealing the vertical joints between modules, connecting the steel beams and the core tube, hoisting the steel truss floor deck, laying the steel bars for floor slab connections, vertical concrete pouring, and floor concrete pouring.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The building structure system adopts a modular construction method, which can standardize the design of building modules according to different building space layouts, thereby simplifying the types of building modules to the greatest extent. Multiple standard building modules are assembled together to form a large internal space without beams or columns, so that the functional requirements of the building can be changed throughout its life cycle.

[0021] (2) The building modules of this building structure system are in the form of prefabricated components, and most of the work is completed in the factory. Under factory prefabrication conditions, the internal dimensions, opening size and position accuracy of the building modules can be maintained at a high level, and the manufacturing error is easier to control within the allowable range. The building modules use standardized components, connection nodes and assembly fixtures. The standardized and repetitive production of the building module room units can achieve industrial assembly line rapid production, which is in line with the development trend of building industrialization.

[0022] (3) The building structure system adopts a structural mode of four-sided modules + cast-in-place core tube in the middle, and the building modules and the core tube are connected by hinged steel beams. It can greatly reduce the tedious work of template support, node welding and concrete pouring and maintenance on the construction site, simplify the construction process, reduce the construction difficulty, and greatly reduce the demand for labor on site, and the on-site construction management is more rigorous and orderly. As a result, the construction efficiency can be greatly improved, the on-site construction time can be shortened, and economic benefits can be created for the project.

[0023] (4) The exterior wall panels of the building modules rely on the factory's high-precision molds and advanced manufacturing processes to ensure that the exterior wall panels are accurate in size, tightly connected during assembly, and have good integrity. At the same time, there are strict construction quality control measures during the manufacturing and installation of building modules. For example, the sealing of the exterior wall joints is tested, and the quality of the waterproof layer construction is monitored. These measures ensure that the construction quality of the exterior wall meets the design requirements, thereby reducing the risk of leakage.

[0024] (5) Building modules are prefabricated in factories, which reduces material waste at the construction site. At the same time, the factory-based production method also makes material utilization more efficient. At the same time, the energy consumption during the production process of this building system is low, and the impact on the environment during the construction process is small, which helps to achieve the carbon reduction goals of the construction industry and promote the green development of the construction industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of a plan structure of a steel-concrete combined modular building structure system provided by an embodiment of the present invention;

[0026] Figure 2 It is a schematic diagram of a wall structure of a building module provided by an embodiment of the present invention;

[0027] Figure 3 yes Figure 2 A cross-sectional view of section AA in FIG.

[0028] Figure 4 yes Figure 2 Bottom view of section BB in FIG.

[0029] Figure 5 yes Figure 2 A top view of the BB section in FIG.

[0030] Figure 6 It is a schematic diagram of a short wall structure of a building module provided by an embodiment of the present invention;

[0031] Figure 7 yes Figure 6 A cross-sectional view of the CC section in FIG.

[0032] Figure 8 is a schematic diagram of a horizontal connection structure between building modules provided by an embodiment of the present invention;

[0033] Fig. 9 yes Figure 8 A cross-sectional view of section 1-1 in FIG.

[0034] Fig.10 yes Figure 8 A cross-sectional view of section 2-2 in FIG.

[0035] Fig.11It is a schematic diagram of the vertical connection structure between the bottom cast-in-place layer and the building module provided by an embodiment of the present invention;

[0036] Fig.12 yes Fig.11 A top view of

[0037] Fig.13 is a schematic diagram of a vertical connection structure between building modules provided by an embodiment of the present invention;

[0038] Fig.14 yes Fig.13 Top view of the . DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] See also Figure 1 , showing a steel-concrete composite modular building structure system provided by this embodiment, including multiple building modules 1 and a cast-in-place shear wall core tube 2, multiple building modules 1 are distributed around the cast-in-place shear wall core tube 2, and multiple building modules 1 are connected to the cast-in-place shear wall core tube 2 through hinged steel beams 3.

[0042] The building module 1 is a standardized module, which is prefabricated in a factory using standardized components, connection nodes and assembly fixtures.

[0043] Specifically, see Figures 2 to 7The wall of the building module 1 includes a conventional wall and a short wall; square columns 11 are arranged at both ends of the conventional wall, and steel plates 12 are welded on the sides of the square columns 11; the steel mesh 13 and cross supports 14 inside the conventional wall are welded to the steel plates 12 on both sides, wherein the cross supports 14 are used to provide lifting strength, and at the same time, after the lifting is completed, there is no need to cut and dismantle, and the module structure strength is provided by being retained in the wall; non-dismantling cement-based formworks 15 are installed on the inner and outer surfaces of the conventional wall, and the non-dismantling cement-based formworks 15 are connected together by connecting angle codes 16 on the inner side of the wall, and are fixed to the cross supports 14 inside the wall by anchor bolts 17.

[0044] The conventional wall is provided with two steel plate trusses 18 at the top and bottom, respectively, to strengthen the connection of the non-dismantling cement-based formwork 15 on both sides and enhance the overall performance of the wall; holes are opened at a certain interval on the non-dismantling cement-based formwork 15, and countersunk tension screws 19 are provided to prevent the formwork from expanding during pouring.

[0045] Square columns 11 are also arranged at both ends of the short wall, but the length between the columns is less than the side length of the square columns 11; steel tie bars a are welded at a certain distance between the square columns, and the non-removable cement-based formwork 15 on both sides is fixed on the steel tie bars a by self-tapping screws.

[0046] See also Figures 8 to 10 , two adjacent building modules 1 in the horizontal direction are connected by a steel mesh 13, and concrete is poured in the gap between the two building modules 1. The steel mesh 13 is composed of a number of annular steel bars 131 + two vertical steel bars 132 (the vertical steel bars 132 are welded to one side of the annular steel bars 131, and L1 is smaller than L2; the position of the annular steel bars 131 is the same as the opening position of the square column 11); after the two adjacent building modules 1 are in place, the steel mesh 13 is first extended into the square column 11 of one module (the position of the annular steel bar 131 is the same as the hole position on the side of the square column 11), and then the steel mesh 13 is passed through the hole and moved toward the other module until it is in place. This connection method is simple and convenient, and can greatly improve the efficiency of on-site assembly construction.

[0047] See also Fig.11 and Fig.12 The building structure system also includes a bottom cast-in-place layer 4, in which a double row of vertical longitudinal bars b are pre-buried at a certain distance at a position corresponding to the wall of the building module 1, and the vertical longitudinal bars b are anchored in the gap between the steel mesh 13 and the cross support 14 of the building module 1; the bottom cast-in-place layer 4 corresponds to the position of the square column 11 of the building module 1 and a large-diameter steel bar c is pre-buried, and the exposed part of the large-diameter steel bar c is provided with a transverse auxiliary steel bar d to enhance the compression and shear resistance of the concrete at the connection part.

[0048] See also Fig.13 and Fig.14The square columns 11 of two vertically adjacent building modules 1 are connected by nesting the vertical connecting core columns 5 in the square columns 11 (the size of the bottom core column of the upper module is slightly larger than the size of the core column extending from the lower module). The walls of two vertically adjacent building modules 1 are connected by placing double rows of vertical dowels e on site.

[0049] This embodiment also provides an assembly method of a steel-concrete combined modular building structure system, which comprises at least the following steps:

[0050] Building module 1 assembly process flow:

[0051] It includes the installation of the module base plate, the installation of the single wall, the welding of the four walls, the installation of the bay window, the installation of the floor decking, the exterior decoration, and the interior decoration and mechanical and electrical installation.

[0052] Structural system assembly process:

[0053] It includes positioning, checking the elevation of the board surface and installing module gaskets, installing module horizontal limiters, constructing the module seat slurry layer, hoisting the modules, sealing the vertical joints between modules, connecting the steel beams and the core tube, hoisting the steel truss floor deck, laying the steel bars for floor slab connections, vertical concrete pouring, and floor concrete pouring.

[0054] In summary, the building structure system provided by this embodiment has the following technical effects:

[0055] (1) The building structure system adopts a modular construction method, and the building modules 1 can be standardized according to different building space layouts, simplifying the types of building modules to the greatest extent. Multiple standard building modules 1 are assembled together to form a large internal space without beams or columns, so that the functional requirements of the building can be changed throughout the life cycle.

[0056] (2) The building module 1 of the building structure system is in the form of prefabricated components, and most of the work is completed in the factory. Under the prefabrication conditions in the factory, the accuracy of the internal dimensions, opening size and position of the building module 1 can be maintained at a high level, and the manufacturing error is also easier to control within the allowable range. The building module uses standardized components, connection nodes and assembly fixtures. The standardized and repetitive production of the building module room unit can achieve industrial assembly line rapid production, which is in line with the development trend of building industrialization.

[0057] (3) The building structure system adopts the structural mode of surrounding building modules + middle cast-in-place core tube, and the building module 1 and the cast-in-place shear wall core tube 2 are connected by hinged steel beams. It can greatly reduce the tedious template support, node welding and concrete pouring and maintenance work on the construction site, simplify the construction process, reduce the construction difficulty, and greatly reduce the demand for labor on site, and the on-site construction management is more rigorous and orderly. As a result, the construction efficiency can be greatly improved, the on-site construction time can be shortened, and economic benefits can be created for the project.

[0058] (4) The exterior wall panels of building module 1 rely on the factory's high-precision molds and advanced manufacturing processes to ensure that the exterior wall panels are accurate in size, tightly connected during assembly, and have good integrity. At the same time, during the manufacturing and installation of building module 1, there are strict construction quality control measures. For example, the sealing of the exterior wall joints is tested, and the construction quality of the waterproof layer is monitored. These measures ensure that the construction quality of the exterior wall meets the design requirements, thereby reducing the risk of leakage.

[0059] (5) The building module 1 is prefabricated in the factory, which reduces the material waste at the construction site. At the same time, the factory-based production method also makes the material utilization more efficient. At the same time, the energy consumption during the production process of this building system is low, and the impact on the environment during the construction process is small, which helps to achieve the carbon reduction goals of the construction industry and promote the green development of the construction industry.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel-concrete modular building structure system, characterized in that: It includes multiple building modules and a cast-in-place shear wall core tube, wherein the multiple building modules are distributed around the cast-in-place shear wall core tube, and the multiple building modules are connected to the cast-in-place shear wall core tube through hinged steel beams; the multiple building modules are all standardized modules, which are prefabricated in the factory using standardized components, connection nodes and assembly fixtures.

2. The steel-concrete combined modular building structure system according to claim 1 is characterized in that: The wall of the building module includes a conventional wall and a short wall; square columns are arranged at both ends of the conventional wall, and steel plates are welded to the sides of the square columns of the conventional wall; the steel mesh and cross supports inside the conventional wall are welded to the steel plates on both sides, wherein the cross supports are used to provide hoisting strength, and at the same time, cutting and removal are avoided after hoisting is completed, and the cross supports are retained in the wall to provide module structural strength; The conventional wall is installed with non-dismantling cement-based formwork on both the inner and outer surfaces, the non-dismantling cement-based formwork is connected together through the connecting angle code on the inner side of the wall, and is fixed to the cross support inside the wall through anchor bolts; The conventional wall is provided with two steel plate trusses at the top and bottom, respectively, to strengthen the connection of the non-dismantling cement-based formwork on both sides and enhance the overall performance of the wall; holes are opened at a certain interval on the non-dismantling cement-based formwork, and countersunk tension screws are provided to prevent the formwork from expanding during pouring; Square columns are also arranged at both ends of the short wall, but the length between the columns is smaller than the side length of the square columns; steel tie bars are welded at a certain distance between the square columns of the short wall, and the non-dismantling cement-based formworks on both sides are fixed to the steel tie bars by self-tapping screws.

3. The steel-concrete combined modular building structure system according to claim 1 is characterized in that: Two adjacent building modules in the horizontal direction are connected by a steel mesh, which is composed of a plurality of annular steel bars and two vertical steel bars; concrete is poured in the gap between the two building modules.

4. The steel-concrete combined modular building structure system according to claim 1 is characterized in that: It also includes a bottom cast-in-place layer, in which double rows of vertical longitudinal bars are pre-embedded at a certain distance at the position corresponding to the wall of the building module, and the vertical longitudinal bars are anchored in the gap between the steel mesh and the cross support of the building module; the bottom cast-in-place layer is pre-embedded with large-diameter steel bars at the position corresponding to the square column of the building module, and transverse auxiliary steel bars are arranged on the exposed part of the large-diameter steel bars to enhance the compression and shear resistance of the concrete at the connection part.

5. The steel-concrete combined modular building structure system according to claim 1 is characterized in that: The square tube columns of two vertically adjacent building modules are connected by nesting the vertical connecting core columns in the square tube columns; the walls of two vertically adjacent building modules are connected by placing double rows of vertical dowel bars on site.

6. A method for assembling a steel-concrete modular building structure system, characterized in that: At least the following steps are included: Building module assembly process: It includes the installation of the module base plate, the installation of the single wall, the welding of the four walls, the installation of the bay window, the installation of the floor decking, the exterior decoration, and the interior decoration and mechanical and electrical installation. Structural system assembly process: It includes positioning, checking the elevation of the slab and installing module gaskets, installing module horizontal limiters, constructing the module seat slurry layer, hoisting the modules, sealing the vertical joints between modules, connecting the steel beams and the cast-in-place core tube, hoisting the steel truss floor deck, laying the steel bars for floor slab connections, vertical concrete pouring, and floor concrete pouring.

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