Steel frame reinforced concrete core tube structural system using all-dry connection technology

Abstract

The present application relates to the field of building structure technology, and in particular to a steel frame reinforced concrete core tube structure system using a fully dry connection technology. The structure includes a core tube, a steel frame, a steel-concrete composite floor, a space grille and a movable partition wall. Among them, the steel frame is arranged on the peripheral side of the core tube; the steel-concrete composite floor is composed of a first steel hollow sandwich plate and a steel support, and the two ends of the steel support are respectively connected to the steel frame and the core tube; the space grille is arranged on the first steel hollow sandwich plate and is fixedly connected to the upper plate through a pre-connected anchor point, and the movable partition wall is detachably connected to the space grille. Through the above technical solution, there is no need to set up load-bearing beams, columns, and shear wall structures that bear the load-bearing function inside the house, and the residents' interior decoration layout is no longer restricted by the shear wall. At the same time, the non-load-bearing partition walls inside the house are designed as movable partition walls, so that the residential partition walls can meet the residents' needs for variable residential space.

Description

Technical Field

[0001] The present application relates to the technical field of building structures, and in particular to a steel frame reinforced concrete core tube structure system using a fully dry connection technology. Background Art

[0002] Traditional building structures, such as the frame-shear structure, while improving overall building stability, also limit the flexibility of internal spaces. The frame-shear structure primarily consists of a frame and shear walls, with the shear walls carrying the majority of horizontal loads, while the frame primarily supports vertical loads. This structural form is widely used in high-rise buildings, not only improving safety and durability but also ensuring stability in harsh natural conditions.

[0003] To address the problem of limited interior space, existing solutions mainly include improving the design of shear walls and optimizing the structure of non-load-bearing partition walls. Specifically, common methods include: (1) using lightweight, high-strength materials to make shear walls to reduce the weight of the wall and increase its bearing capacity; (2) using prefabricated components instead of on-site casting to shorten the construction period and reduce construction errors; (3) using modular non-load-bearing partition walls to make them easier to install and dismantle, thereby improving the variability of the space.

[0004] While these approaches address the limitations of traditional building structures to a certain extent, they still present some significant drawbacks. First, the immutability of shear walls significantly limits the flexibility of interior spaces and makes it impossible to meet the diverse spatial demands of different users. Second, the renovation of non-load-bearing partition walls is difficult, especially in existing buildings. Removing and reinstalling partitions is often time-consuming, labor-intensive, and expensive. Therefore, achieving a high degree of variability and flexibility in interior spaces while ensuring structural safety has become a pressing technical challenge. Summary of the Invention

[0005] This application provides a steel frame reinforced concrete core tube structure system using a fully dry connection technology, which can achieve beam-free, column-free, and shear wall-free indoor space, thereby effectively expanding the available space and helping to improve the variability and expandability of the residential space. The following technical solutions are adopted:

[0006] A steel frame reinforced concrete core tube structural system using a fully dry connection technology, comprising a core tube, a steel frame, a steel-concrete composite floor slab, a space grid and a movable partition wall;

[0007] The steel frame is arranged on the peripheral side of the core tube, and a prefabricated shear wall is arranged on the steel frame as the building exterior wall; the steel-concrete composite floor 3 is arranged between the steel frame and the core tube;

[0008] The steel-concrete composite floor comprises a first steel hollow sandwich plate and a steel support, wherein both ends of the steel support are connected to the steel frame and the core tube respectively; the first steel hollow sandwich plate is fixedly connected to the steel support;

[0009] The space grid is arranged on the first steel hollow sandwich plate and is fixedly connected to the first steel hollow sandwich plate, and the movable partition wall is detachably connected to the space grid.

[0010] By adopting the above technical solution, the building's exterior walls are set on the steel frame as shear walls, and the household walls are set inside the building structure as shear walls, which together with the concrete core tube serve as the building's load-bearing structure. In addition, a large-span flat plate-shear wall structure is formed through a steel-concrete composite floor slab, thereby achieving beam-free, column-free and shear wall-free indoors.

[0011] At the same time, space grilles and movable partition walls are used. The movable partition walls can be connected with the space grilles to achieve the fixation and lossless splitting of the partition walls. Therefore, the movable partition walls can be used as partition walls inside the residence to meet the residents' demand for variable residential space and have the advantage of being easy to modify and dismantle.

[0012] Preferably, the first steel hollow sandwich panel includes an upper panel, a lower panel and an intermediate support; the lower panel is fixedly connected to the steel support; a pre-connected anchor point is also provided on the first steel hollow sandwich panel, and the space grid is fixedly connected to the upper panel via the pre-connected anchor point.

[0013] By adopting this technical solution, the first steel hollow sandwich panel allows for the filling of insulation and soundproofing materials between the upper and lower panels, thereby improving the overall performance of the concrete composite floor. Furthermore, the use of the first steel hollow sandwich panel also enhances the load-bearing capacity and bending strength of the composite floor. Pre-installed anchor points facilitate the installation of the space grid.

[0014] Preferably, the pre-connected anchor point structure includes a supporting plate and a fixing rod, wherein the supporting plate is arranged on the upper side of the lower plate, and the intermediate support is passed through the supporting plate; the fixing rod is passed through the upper plate and fixedly connected to the supporting plate, and the upper end of the fixing rod extends to above the upper plate; and the space grille is fixedly connected to the fixing rod.

[0015] By adopting the above technical solution, the bearing plate can effectively improve the bearing capacity of the pre-connected anchor point, so as to improve the strength of the pre-connected anchor point, thereby improving its bearing capacity and stability, thereby helping to improve the stability of the space grid and thus ensure the stability of the movable partition wall.

[0016] Preferably, the steel-concrete composite floor further comprises a concrete slab, which is arranged on the upper side of the first steel hollow sandwich panel, and the fixing rod passes through the concrete slab and extends to the upper side of the concrete slab; the space grille is arranged above the concrete slab.

[0017] By adopting the above technical solution, the setting of the concrete slab can provide a better construction foundation for the interior construction of the house, which is convenient for the construction of insulation boards, floor heating or floor tiles.

[0018] Preferably, the pre-connected anchor point further includes a support plate, which is pre-buried on the upper side of the concrete slab and abuts against the space grid, and the fixing rod passes through the support plate and is fixedly connected to the support plate.

[0019] By adopting the above technical solution, the support plate can provide a relatively stable connection foundation, thereby ensuring the stability of the space grid.

[0020] Preferably, the steel-concrete composite floor also includes a second steel hollow sandwich panel, which is arranged under the steel support and fixedly connected to the steel support. The lower side of the second steel hollow sandwich panel is connected to a hanger for connecting to the ceiling.

[0021] By adopting the above technical solution, the provision of the second steel hollow sandwich panel can, on the one hand, further enhance the overall strength of the steel-concrete composite floor slab; on the other hand, a space grid can be added below the second steel hollow sandwich panel and connected to the movable partition wall to facilitate the installation of the movable partition wall.

[0022] Preferably, the first steel hollow sandwich panel and the second steel hollow sandwich panel are both connected to the steel frame and the core tube.

[0023] By adopting the above technical solution, the bearing capacity of the steel-concrete composite floor slab can be effectively enhanced.

[0024] Preferably, the steel support includes a steel frame, surface steel bars, a hollow formwork box and a concrete structure layer. The surface steel bars are arranged on the lower and upper sides of the steel frame, the hollow formwork box is arranged on the inner side of the steel frame, and the concrete structure layer is covered on the outside of the steel frame, the surface steel bars and the hollow formwork box.

[0025] By adopting the above technical solution, the steel frame provides the basic bearing capacity. The setting of the hollow mold box can form a cavity inside the steel support, thereby reducing the deadweight and helping to achieve lightweighting.

[0026] Preferably, bolts are provided on the steel frame, the intermediate support is tubular, and the bolts are passed through the intermediate support and fixedly connected to the intermediate support.

[0027] By adopting the above technical solution, the bolts can be connected to the intermediate supports as a whole, thereby effectively improving the stability of the steel hollow sandwich panel, while also improving the integrity of the steel support and the steel hollow sandwich panel, thereby improving the overall strength of the steel-concrete composite floor.

[0028] Preferably, the steel support further comprises fiber cement boards, and the fiber cement boards are arranged on the upper and lower sides of the concrete structure layer.

[0029] By adopting the above technical solution, the fiber cement board can play a better isolation role on the steel support and the steel hollow sandwich panel, which can improve the seismic resistance of the connection between the steel support and the steel hollow sandwich panel, and at the same time have good support to ensure the overall performance of the steel-concrete composite floor.

[0030] In summary, the present invention includes at least one of the following beneficial technical effects:

[0031] 1. The steel-frame reinforced concrete core tube structure, which utilizes a fully dry connection technique, achieves a beam-free, column-free, and shear-wall-free interior, eliminating the spatial limitations inherent in shear walls. Furthermore, the use of spatial grids and movable partitions significantly improves the utilization and variability of the interior space, meeting user demands for diverse spatial layouts.

[0032] 2. Designing non-load-bearing partition walls within the residence as movable partition walls, and using spatial grids to facilitate the installation and removal of these movable partition walls, while ensuring room airtightness while also providing flexibility, allowing residential partition walls to meet residents' needs for flexible residential spaces.

[0033] 3. The installation of steel-concrete composite floor slabs not only enhances the overall load-bearing capacity and bending strength of the building structure, but also achieves a stable connection of movable partition walls through the design of pre-connected anchor points and space grids, improving the flexible adjustment capabilities of the residential interior space. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the overall structure of a steel frame-reinforced concrete core tube building structure with full dry connection in an embodiment of the present application;

[0035] Figure 2 It is a cross-sectional view of a steel-concrete composite floor slab in an embodiment of the present application.

[0036] Markings in the accompanying drawings: 1. Core tube; 2. Steel frame; 3. Steel-concrete composite floor; 31. Steel support; 311. Steel skeleton; 312. Surface reinforcement; 313. Hollow formwork; 314. Concrete structural layer; 315. Studs; 316. Fiber cement board; 32. First steel hollow sandwich panel; 321. Upper panel; 322. Lower panel; 323. Intermediate support; 33. Pre-connected anchor point; 331. Load-bearing plate; 332. Fixing rod; 333. Support plate; 34. Second steel hollow sandwich panel; 4. Space grid. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-2The present invention is described in further detail.

[0038] The inventors of this application have discovered that with the development of the market economy, people are increasingly concerned about the efficiency and comfort of building interior space. Modern residential buildings are typically constructed using a frame-shear structure, which is a structure that combines a frame and shear walls by arranging a certain number of shear walls within the frame.

[0039] Since the frame-shear structure will arrange multiple shear walls and non-load-bearing partition walls inside the house, the shear walls are fixed and immutable walls that need to bear loads, and the non-load-bearing partition walls are usually fixed brick walls. Therefore, both shear walls and non-load-bearing partition walls will restrict the interior space of the house, making the interior space non-variable, causing many restrictions on the decoration layout, and making it difficult to meet the diverse usage needs of users.

[0040] To this end, this application mainly adopts a steel frame reinforced concrete core tube structure system with full dry connection technology, achieving no beams, no columns, and no shear walls indoors, thereby effectively expanding the available space and improving the variability and expandability of the space within the residence. The following is a further detailed description of this application.

[0041] The steel frame reinforced concrete core tube structure system provided by the embodiment of the present application adopts the fully dry connection technology, including a core tube 1, a steel frame 2, a steel-concrete composite floor 3, a space grille 4 and a movable partition wall. Specifically, the steel frame 2 is arranged on the peripheral side of the core tube 1, and a prefabricated shear wall is provided on the steel frame 2; the steel-concrete composite floor 3 is arranged between the steel frame 2 and the core tube 1; the steel-concrete composite floor 3 includes a first steel hollow sandwich plate 32 and a steel support 31, and the two ends of the steel support 31 are respectively connected to the steel frame 2 and the core tube 1; the first steel hollow sandwich plate 32 is fixedly connected to the steel support 31; the space grille 4 is arranged on the first steel hollow sandwich plate 32 and fixedly connected to the first steel hollow sandwich plate 32, and the movable partition wall is detachably connected to the space grille 4.

[0042] The steel-concrete composite floor slab 3 is prefabricated and assembled on site. The building's exterior walls are mounted on the steel frame 2. Both the exterior walls and the core tube 1 serve as shear walls, bearing the load. Both the exterior walls and the core tube 1 are constructed from prefabricated concrete units and assembled on site using dry connections (bolting or welding, etc.). The exterior walls are connected to the steel frame 2, the steel-concrete composite floor slab 3 to the exterior walls and core tube 1, and the partition walls to the exterior walls and the steel-concrete composite floor slab 3. This completes the construction of the building structure.

[0043] By bearing the load through the exterior walls of the building, core tube 1, partition walls and other exterior walls of the residence, there is no need to set up load-bearing beams, columns and shear wall structures inside the residence to perform the load-bearing function. The interior of the residence is a large-span beam-free and column-free space. The residents' interior decoration layout is no longer restricted by shear walls, and the room span size can also be divided according to the needs of the residents. At the same time, the non-load-bearing partition walls inside the residence are designed to be movable partition walls, which give the partition walls flexibility while ensuring the airtightness of the room, so that the residential partition walls can meet the residents' needs for variable residential space.

[0044] Specifically, the first steel hollow sandwich panel 32 includes an upper panel 321, a lower panel 322, and intermediate supports 323. The lower panel 322 is fixedly connected to the steel supports 31 by welding or bolting. Pre-connection anchor points 33 are also provided on the first steel hollow sandwich panel 32, through which the spatial grid 4 is fixedly connected to the upper panel 321. The pre-connection anchor points 33 can be made of metal materials such as steel or aluminum alloy, or high-strength composite materials.

[0045] The pre-connection anchor point 33 structure includes a bearing plate 331 and a fixing rod 332. The bearing plate 331 is located on the upper side of the lower plate 322 and is welded or bolted to the lower plate 322. The intermediate support 323 is installed on the bearing plate 331 to enhance the integrity of the pre-connection anchor point 33 and the first steel hollow sandwich plate 32. The fixing rod 332 is installed on the upper plate 321 and is fixedly connected to the bearing plate 331. The upper end of the fixing rod 332 extends above the upper plate 321. The space grid 4 is bolted to the fixing rod 332.

[0046] The carrier plate 331 can be round or square, and its thickness and diameter can be selected according to actual needs to ensure sufficient bearing capacity and stability. The fixing rod 332 can be cylindrical or rectangular, and its length and diameter also need to be designed according to actual needs to ensure the strength and stability of the fixing rod 332.

[0047] The steel-concrete composite floor 3 also includes a concrete slab, which is positioned above the first steel open-web sandwich panel 32. Fixing rods 332 extend through the concrete slab and onto its upper side. A space grid 4 is positioned above the concrete slab. The thickness and strength of the concrete slab can be adjusted as needed to accommodate varying construction conditions and usage requirements. The surface of the concrete slab can be polished to enhance smoothness and aesthetics.

[0048] The pre-connected anchor point 33 also includes a support plate 333, which is embedded in the upper side of the concrete slab and docked with the space grid 4. The fixing rod 332 passes through the support plate 333 and is fixedly connected to the support plate 333. The support plate 333 can be made of metal or high-strength composite materials. Its shape and size can be designed according to actual needs to ensure sufficient support force and stability.

[0049] The first steel hollow sandwich panel 32 and the second steel hollow sandwich panel 34 are both connected to the steel frame 2 and the core tube 1 to enhance the bearing capacity of the steel-concrete composite floor 3. The second steel hollow sandwich panel 34 is arranged on the lower layer of the steel support 31 and is fixedly connected to the steel support 31. The lower side of the second steel hollow sandwich panel 34 is connected to a hanger for connecting to the ceiling. The structure and material of the second steel hollow sandwich panel 34 can be the same as those of the first steel hollow sandwich panel 32, and can also be appropriately adjusted according to actual needs. The hanger can be made of high-strength steel or aluminum alloy, and its length and diameter can be designed according to actual needs to ensure the strength and stability of the hanger.

[0050] The steel support 31 comprises a steel frame 311, surface reinforcement 312, hollow formwork 313, and a concrete structure layer 314. The surface reinforcement 312 is located on the upper and lower sides of the steel frame 311, the hollow formwork 313 is located inside the steel frame 311, and the concrete structure layer 314 is wrapped around the steel frame 311, surface reinforcement 312, and hollow formwork 313. The steel frame 311 can be made of high-strength steel and its cross-section can be I-shaped, H-shaped, or other suitable shapes to ensure its strength and stability.

[0051] The surface reinforcement 312 can be in the form of a steel mesh or steel bundle, and its specifications and spacing can be designed according to actual needs to ensure the strength and stability of the surface reinforcement 312. The hollow formwork 313 can be made of plastic or metal, and its shape and size can be designed according to actual needs to ensure the strength and stability of the hollow formwork 313. The concrete structure layer 314 can be made of ordinary concrete or high-performance concrete, and its thickness and strength can be adjusted according to actual needs to adapt to different construction conditions and usage requirements.

[0052] The steel frame 311 is provided with studs 315. The intermediate supports 323 are tubular in shape, and the studs 315 are inserted into and fixedly connected to the intermediate supports 323. The studs 315 can be made of high-strength steel, and their diameter and length can be designed according to actual needs to ensure the strength and stability of the studs 315. The intermediate supports 323 can be made of steel or aluminum tubes, and their diameter and wall thickness can be designed according to actual needs to ensure the strength and stability of the intermediate supports 323. The provision of studs 315 and intermediate supports 323 effectively enhances the overall strength and stability of the steel supports 31, thereby improving the overall performance of the steel-concrete composite floor slab 3.

[0053] The steel support 31 also includes fiber cement panels 316, which are positioned above and below the concrete structural layer 314. These panels 316 can be made of high-strength fiber-reinforced cement, and their thickness and strength can be adjusted to suit different construction conditions and usage requirements. The fiber cement panels 316 effectively isolate the steel support 31 from the steel open-web sandwich panel, improving their seismic resistance and support performance, thereby enhancing the overall performance of the steel-concrete composite floor slab 3.

[0054] Thus, by adopting a steel frame reinforced concrete core tube structure system with a fully dry connection technology, a beam-free, column-free, and shear wall-free interior is achieved, thereby effectively expanding the available space and improving the variability and expandability of the space inside the residence. The exterior walls of the building are set on the steel frame 2 as shear walls, and the partition walls are set inside the building structure as shear walls, which together with the concrete core tube 1 serve as the load-bearing structure of the building, and a large-span flat plate-shear wall structure is formed by a steel-concrete composite floor 3, thereby achieving a beam-free, column-free, and shear wall-free interior. At the same time, a space grille 4 and a movable partition wall are adopted. The movable partition wall can be connected to the space grille 4 to achieve the fixation of the partition wall and lossless splitting. Therefore, the movable partition wall, as a partition wall inside the residence, can meet the residents' demand for the variability of the residential space and has the advantage of convenient modification and disassembly.

[0055] The first steel hollow sandwich panel 32 and the second steel hollow sandwich panel 34 may have a heat insulation layer, a sound insulation layer, a fireproof layer, etc. added in the hollow interlayer to improve the thermal insulation, sound insulation and fireproof performance of the building.

[0056] The space grille 4 adopts a light steel frame or an aluminum alloy frame, and the movable partition wall can be connected to the space grille 4 by a detachable connection method such as bolt connection to ensure that the movable partition wall has good easy modification and disassembly performance.

[0057] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steel frame reinforced concrete core tube structural system using a fully dry connection technology, characterized by: It includes a core tube (1), a steel frame (2), a steel-concrete composite floor (3), a space grid (4) and a movable partition wall; The steel frame (2) is arranged on the peripheral side of the core tube (1), and a prefabricated shear wall is provided on the steel frame (2) as a building exterior wall; the steel-concrete composite floor slab (3) is arranged between the steel frame (2) and the core tube (1); The steel-concrete composite floor (3) comprises a first steel hollow sandwich plate (32) and a steel support (31), wherein the two ends of the steel support (31) are respectively connected to the steel frame (2) and the core tube (1); the first steel hollow sandwich plate (32) is fixedly connected to the steel support (31); The space grid (4) is provided on the first steel hollow sandwich plate (32) and is fixedly connected to the first steel hollow sandwich plate (32), and the movable partition wall is detachably connected to the space grid (4); The first steel hollow sandwich plate (32) comprises an upper plate (321), a lower plate (322) and an intermediate support (323); the lower plate (322) is fixedly connected to the section steel support (31); a pre-connected anchor point (33) is also provided on the first steel hollow sandwich plate (32), and the space grid (4) is fixedly connected to the upper plate (321) via the pre-connected anchor point (33); The pre-connected anchor point (33) structure includes a bearing plate (331) and a fixing rod (332), wherein the bearing plate (331) is arranged on the upper side of the lower plate (322), and the intermediate support (323) is passed through the bearing plate (331); the fixing rod (332) is passed through the upper plate (321) and is fixedly connected to the bearing plate (331), and the upper end of the fixing rod (332) extends above the upper plate (321); and the space grille (4) is fixedly connected to the fixing rod (332); The steel-concrete composite floor (3) further includes a second steel hollow sandwich plate (34), the second steel hollow sandwich plate (34) being arranged on the lower layer of the steel support (31) and fixedly connected to the steel support (31), and a hanger being connected to the lower side of the second steel hollow sandwich plate (34) for connecting to a ceiling; The steel support (31) comprises a steel frame (311), surface steel bars (312), a hollow formwork (313), and a concrete structure layer (314). The surface steel bars (312) are arranged on the upper and lower sides of the steel frame (311), the hollow formwork (313) is arranged on the inner side of the steel frame (311), and the concrete structure layer (314) is covered on the outside of the steel frame (311), the surface steel bars (312), and the hollow formwork (313).

2. The steel frame reinforced concrete core tube structural system using the all-dry connection technology according to claim 1 is characterized by: The steel-concrete composite floor (3) further comprises a concrete slab, which is arranged on the upper side of the first steel hollow sandwich plate (32); the fixing rod (332) passes through the concrete slab and extends to the upper side of the concrete slab; and the space grid (4) is arranged above the concrete slab.

3. The steel frame reinforced concrete core tube structural system using the all-dry connection technology according to claim 2 is characterized by: The pre-connected anchor point (33) further includes a support plate (333), which is pre-buried on the upper side of the concrete slab and abuts against the space grid (4), and a fixing rod (332) passes through the support plate (333) and is fixedly connected to the support plate (333).

4. The steel frame reinforced concrete core tube structural system using the all-dry connection technology according to claim 1 is characterized by: The first steel hollow sandwich plate (32) and the second steel hollow sandwich plate (34) are both connected to the steel frame (2) and the core tube (1).

5. The steel frame reinforced concrete core tube structural system using the all-dry connection technology according to claim 1 is characterized by: The steel frame (311) is provided with bolts (315), the intermediate support (323) is tubular, and the bolts (315) are passed through the intermediate support (323) and fixedly connected to the intermediate support (323).

6. The steel frame reinforced concrete core tube structural system using the all-dry connection technology according to claim 1 is characterized by: The steel support (31) further comprises fiber cement boards (316), and the fiber cement boards (316) are arranged on the upper side and the lower side of the concrete structure layer (314).

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