Prefabricated high-rise residential cylindrical shell prestressed floor structure system

Abstract

The present invention relates to a prefabricated high-rise residential cylindrical shell dense-ribbed prestressed floor structure system, which is characterized by comprising a vertical cylindrical structure, a horizontal floor structure and a structural connection node, wherein the structural connection node comprises a structural connection point and a building structural node, and the vertical cylindrical structure is connected with the horizontal floor structure through the structural connection node to form the overall structure of the high-rise residential building. Beneficial effects: The present invention adopts a cylindrical shell dense-ribbed floor structure system, which can improve the variety of prefabricated assembled components, extend the industrial chain of prefabricated component products, and improve the production efficiency of the prefabricated high-rise residential industry; the present invention can reduce the number of reinforced concrete shear walls in the building, and create conditions for various needs of functional rooms in the unit, so that users can flexibly arrange and use rooms according to their own needs without destroying or changing structural components.

Description

Technical Field

[0001] The invention belongs to buildings, and in particular relates to a prefabricated assembled high-rise residential cylindrical shell ribbed floor structure system. Background Art

[0002] At present, the structural system of prefabricated high-rise residential buildings is mostly assembled integral shear wall structure. High-rise residential buildings adopt shear wall structure, low-rise and multi-story public buildings adopt frame structure, and office buildings, hotels and residential buildings with high building height adopt a combination of frame and shear wall structure. Prefabricated components generally appear in the form of single pieces, including prefabricated exterior wall panels, prefabricated interior wall panels, composite beams, composite floor slabs, prefabricated stairs, prefabricated air-conditioning panels, etc. The node connection method is mainly sleeve grouting connection and grout anchor lap connection. Disadvantages: The assembly rate is low, and there is a contradiction between the production capacity and output of prefabricated component factories. Simply relying on the application of a single prefabricated component to improve the assembly rate has greatly restricted the development of prefabricated and assembled buildings. Not only is the cost high, but it is also impossible to achieve the construction efficiency and convenience brought by the industrialization of construction; in addition, the number and type of components required limit the production efficiency of prefabricated component factories, resulting in a contradiction between the production capacity and output of prefabricated component factories; the technical system has a low degree of integration, and it is difficult to improve the design and construction efficiency. At present, the technical system of prefabricated high-rise residential buildings in my country is equivalent to the traditional cast-in-place construction mode in terms of design and construction. The architectural design, structural design and construction are out of touch, and it is impossible to take the structure into consideration when the architectural design is initially carried out. The lack of complete top-level planning leads to low integration of the technical system and difficulty in improving the efficiency of design and construction. In particular, it cannot meet people's demand for variable space inside residential units. Once high-rise residential buildings built with the current structural system are delivered for use, the form of their use space is fixed, which makes it difficult to transform and flexibly adapt to the needs of residents for residential use functions at different periods during the entire life cycle of the building. There is a contradiction between people's increasingly changing space use needs and fixed residential space forms. In order to adapt to the rapid urbanization process and the needs of supply-side structural reform, it is urgent to study the transformation of simple components into highly integrated ones, improve the technological progress and efficiency of the prefabricated and assembled industry, and adopt a new prefabricated and assembled design and construction to build high-rise residential buildings. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned technology and to provide a prefabricated and assembled high-rise residential cylindrical formwork dense-ribbed floor structure system, which can be used in the high-rise residential building in the form of prefabricated components in the form of cast-in-place shear wall structure. The combination of the formwork dense-ribbed floor structure and the cylindrical structure can reduce the arrangement of indoor shear walls and realize the free adjustment of indoor space according to different needs during the entire life cycle of the building. When designing the plane and space functions, the components of the space are used as the main structural subsystem to achieve the unity of building structure and function.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a prefabricated and assembled high-rise residential cylindrical shell ribbed floor structure system, characterized in that it includes a vertical cylindrical structure of partial shear walls, a horizontal floor structure and a structural connection node, the structural connection node includes a structural connection point and a building structural node, and the vertical cylindrical structure is connected with the horizontal floor structure through the structural connection node to form the overall structure of the high-rise residential building.

[0005] The vertical cylinder structure includes a wall system and a vertical cylinder. The vertical cylinder includes an indoor part and an outdoor part. The indoor part includes a kitchen module, a bathroom module, a storage room and a balcony module. The outdoor part includes a traffic core and an equipment pipe well module.

[0006] The kitchen module and the bathroom module are pentahedral cylinder structures surrounded by four walls and a floor.

[0007] The balcony module is formed by shear walls to semi-enclose the shaft structure.

[0008] The wall system uses prefabricated shear walls arranged on the exterior walls of the house and the partition walls, which play the role of enclosure and bearing vertical and horizontal loads.

[0009] The wall system comprises an external wall without openings, an external wall with a high window sill and a window opening, an external wall with a low window sill and a window opening, an external wall with two window openings and an external wall with a door opening.

[0010] The traffic core and equipment manhole module include evacuation stairs, elevators, equipment manholes, antechambers and public corridors.

[0011] The horizontal floor structure includes free space floors and non-free space floors. The free space floors include formwork ribbed floors, ordinary cast-in-place floors and ordinary prefabricated floors. The non-free space floors are prefabricated or cast-in-place floors.

[0012] Beneficial effects: The present invention adopts a cylindrical formwork dense-ribbed floor structure system, which can improve the variety of prefabricated and assembled components, extend the industrial chain of prefabricated component products, balance production capacity and market supply and demand, reduce the intensity of on-site production work, and improve the production efficiency of the prefabricated high-rise residential industry; since the main body dimensions of the prefabricated cylindrical modules and prefabricated formwork dense-ribbed floor modules are appropriate and have a high degree of integration, their production, transportation, and installation are no different from ordinary prefabricated shear wall panels and floor slabs, thereby greatly improving the assembly rate of the building, reducing the on-site workload of connecting prefabricated components, enhancing the safety strength of prefabricated and assembled buildings, reducing pollution, adjusting the adaptation of the company's production capacity and output, and improving the company's production efficiency.

[0013] The use of prefabricated high-rise residential cylindrical shell ribbed prestressed floor structure system can reduce the number of reinforced concrete shear walls in the building, thus creating conditions for the various needs of functional rooms in the unit, allowing users to flexibly arrange and use rooms according to their own needs without destroying (or changing) structural components. At the same time, since reinforced concrete is non-recyclable, this structural system achieves green environmental protection by reducing the amount of reinforced concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural system block diagram of the present invention;

[0015] Figure 2-1 Schematic diagram of the shear external wall location structure;

[0016] Figure 2-2 It is a schematic diagram of the structure of a vertical shaft;

[0017] Figure 3-1 It is a schematic diagram of the free space floor structure system;

[0018] Figure 3-2 It is a schematic diagram of the non-free space floor structure system;

[0019] Figure 4 It is a schematic diagram of the formwork ribbed floor structure;

[0020] Figure 5-1 It is a schematic diagram of the connection nodes between the floors;

[0021] Figure 5-2 It is a schematic diagram of the connection nodes between the formwork ribbed floor slab and the ordinary cast-in-place floor slab;

[0022] Figure 5-3 Schematic diagram of the connection node between the formwork ribbed floor and the bathroom (kitchen) floor;

[0023] Figure 5-4 Schematic diagram of the T-type connection node between shear walls;

[0024] Figure 5-5 Schematic diagram of the L-shaped connection node between shear walls;

[0025] Figure 5-6 It is a schematic diagram of the connection node between the shear wall outer wall and the shear wall cylinder;

[0026] Figure 5-7 It is a schematic diagram of the connection node between the shear wall and the formwork ribbed floor;

[0027] Figure 5-8 It is a schematic diagram of the connection node between the shear internal wall and the floor slab;

[0028] Figure 6This is a schematic diagram of the shear wall arrangement of the current prefabricated high-rise residential building;

[0029] Figure 7-1 It is a hint of free space during the newlywed period;

[0030] Figure 7-2 It is a hint of free space during childhood;

[0031] Figure 7-3 It is a hint of free space during the second child period;

[0032] Figure 7-4 It is a schematic representation of free space in old age;

[0033] Figure 8-1 This is a schematic diagram of the structure of a common evacuation staircase;

[0034] Figure 8-2 It is a schematic diagram of the scissors ladder structure.

[0035] In the figure: 1. Formwork dense rib floor, 2. Wide flat beam, 3. Formwork dense rib plate reinforcement (pre-throwing reinforcement), 4. Connection beam reinforcement 5. Connection beam stirrups, 6. Building finished surface elevation, 7. Formwork dense rib floor beam stirrups, 8. Formwork dense rib beam main reinforcement, 9. Rib beam reinforcement, 10. Ordinary precast floor reserved reinforcement, 11. Formwork dense rib floor and cylinder (wall panel) connection reinforcement, 12. Floor, cylinder (wall panel) connection reserved reinforcement and post-cast reinforced concrete, 13. Upper cylinder (wall panel) and lower cylinder (wall panel) reinforcement, 14. Bathroom (kitchen) floor reinforcement, 15. Bathroom (kitchen, balcony) cylinder (wall panel) reinforcement, 16. Shear wall inner wall, 17. Shear wall outer wall, 18. Post-cast column inner wall Steel bars and reinforced concrete concealed columns, 19. Steel plate embedded parts, 10 thick steel plate embedded parts, 20. Extruded polystyrene board (B1 grade), 21. Prefabricated reinforced concrete exterior wall panels and reinforcement, 22. 10 thick galvanized steel plate, 23. Prefabricated cylinder reinforcement, 24. Reinforcement at post-cast strips, 25. Post-cast high-grade concrete, 26. Prefabricated external reinforced concrete wall panel reinforcement, 27. Prefabricated formwork ribbed floor, reinforcement at the connection between prefabricated floor and cylinder (wall panel), 28. Reinforcement at the connection between the lower and upper cylinder (wall panel), 29. Wall panel, 30. Galvanized steel plate dripping, 31. Rock wool board insulation (A grade), 32. Reinforcement at the connection between the lower and upper layers and floor, 33. Connection and reinforcement of ordinary floor and cylinder (wall panel).

[0036] a. Formwork floor application area, b. Ordinary prefabricated floor, c. Cast-in-place floor, d. Prefabricated floor of the cylinder, e. Leisure space, f. Rest space, g. Work space, h. Kitchen module, i. Bathroom module, g. Balcony module, k. Traffic core, pipe well module. DETAILED DESCRIPTION

[0037] The specific implementation of the present invention is described in detail below in conjunction with preferred embodiments.

[0038] See attached for details Figure 1 The present invention provides a prefabricated assembled high-rise residential cylindrical shell ribbed floor structure system, including a vertical cylindrical structure of a partial shear wall, a horizontal floor structure and a structural connection node, wherein the structural connection node includes a structural connection point and a building structural node, and the vertical cylindrical structure is connected with the horizontal floor structure through the structural connection node to form the overall structure of the high-rise residential building. The vertical cylindrical structure includes a wall system and a vertical cylinder, and the vertical cylinder includes an indoor part and an outdoor part. The indoor part includes a kitchen module h, a bathroom module i and a balcony module g, and the outdoor part includes a traffic core and an equipment pipe well module k. The kitchen and bathroom modules are pentahedrons enclosed by four walls and floor slabs. The balcony module is a semi-enclosed shaft structure formed by shear walls. The wall system uses prefabricated shear walls arranged at the exterior walls and partition walls of the house type, which play a role in enclosure and bearing vertical and horizontal loads. The wall system includes an exterior wall without openings, an exterior wall with a high window sill and window opening, an exterior wall with a low window sill and window opening, an exterior wall with two window openings, and an exterior wall with a door opening. The traffic core and equipment manhole module include evacuation stairs, elevators, equipment manholes, antechambers, and public walkways. The horizontal structure includes free space floors and non-free space floors. The free space floors include formwork ribbed floors, ordinary cast-in-place floors, and ordinary prefabricated floors. The non-free space floors are prefabricated and cast-in-place floors. The structural connection nodes include structural connection points and building structural nodes. It should be noted that the construction methods of the prefabricated structural members, vertical cylindrical structures, horizontal structures, and structural connection nodes described in the present invention are all constructed using well-known conventional technologies, which need not be elaborated here.

[0039] Example

[0040] The prefabricated high-rise residential cylindrical shell ribbed floor structure system includes three parts: vertical structure form, horizontal structure form and structural node connection. The vertical structure form includes the shear exterior wall part and the shaft formed by functional spaces such as kitchen, bathroom, balcony, traffic core, and pipe well. The horizontal structure mainly refers to the floor structure system, including prefabricated shell ribbed floor, ordinary cast-in-place floor (beam) and ordinary prefabricated floor. The vertical structure and the horizontal structure do not exist independently but interact with each other. These two parts also need the assistance of connecting nodes to jointly constitute the overall structure of the building, while achieving structural safety and good seismic resistance, improving the assembly rate and realizing adaptive changes in space.

[0041] As attached Figure 2-1This is the wall system constructed by applying the cylindrical shell ribbed floor structure system. When applying the cylindrical shell ribbed floor structure system of prefabricated high-rise residential buildings, the layout position of the shear wall in the wall system is changed first. The layout of the load-bearing wall of the currently selected apartment can be found in Figure 6 According to the original situation of the selected apartment, the original shear wall inside the apartment is removed, the outer shear wall and the shear wall between the apartments are retained, and the door and window openings on the exterior wall are retained. When splitting the wall system, the principle is to have fewer specifications and more combinations.

[0042] As attached Figure 2-2 The vertical shaft layout is shown in Figure 1. The vertical shaft in the vertical structure mainly includes the kitchen module h, the bathroom module i, the balcony module g, the traffic core and various pipe shaft modules k. Due to the structural support of each module, the symmetrical, dispersed and balanced layout principles should be adopted when designing the location to meet the seismic requirements.

[0043] Attached Figure 3-1 It is a horizontal structural form. Prefabricated formwork dense-ribbed floor 1, ordinary cast-in-place floor, and ordinary prefabricated floor b are applied in free space. The floor of non-free space is the floor prefabricated as a whole of each cylinder. Formwork dense-ribbed floor is applied in free space, with small rib spacing and low rib height. In terms of structural safety, it can improve the overall stiffness of the building, enhance the integrity, and has small deformation and good seismic performance. In terms of space design, it can realize large indoor space and effectively improve the utilization rate of indoor space. Since the formwork dense-ribbed floor can only highlight its advantages in a larger span, in a complex residential plan, it is necessary to weigh the pros and cons and reasonably choose the floor form. Formwork dense-ribbed floor is applied in the appropriate space, and ordinary cast-in-place floor (beam) is used in small areas or irregularly shaped areas to make the design more economical and reasonable. Ordinary prefabricated floor slabs are used in non-structural balcony areas and traffic areas in traffic cores. The spatial shape of this area is relatively regular and does not require spatial variability. Therefore, the use of factory-prefabricated floor slabs can meet structural and usage requirements and can effectively avoid environmental pollution, greatly improving production and construction efficiency.

[0044] In the application area a of the formwork floor in Figure 3, the formwork floor is generally rectangular with a moderate aspect ratio; the ordinary prefabricated floor b is used in the traffic part between the housing units; the cast-in-place floor c in the indoor free space cannot give full play to the advantages of the formwork floor due to its small area. Therefore, ordinary cast-in-place floor is used in conjunction with the use of formwork dense-ribbed floor to give full play to their respective strengths, make the overall structural layout economical and reasonable, and realize the variability of space.

[0045] Figure 3-2 The non-free space is the floor slab of each cylinder module, which is prefabricated as a whole with the vertical shaft. It is prefabricated in the factory according to the size of the bathroom, kitchen, balcony and traffic core to make the prefabricated floor slab d of the cylinder, and then hoisted on site.

[0046] Traffic core module - evacuation stairs. The net width of the stairwell is determined by the net width of the staircase and the stairwell or partition wall between the staircases, and the depth of the stairwell is determined by the number of staircases, the width of the staircase and the width of the platform.

[0047] Attached Figure 8-1 It is a common evacuation staircase, with Figure 8-2 When forming the tube structure, the traffic box can be decomposed into several tubes based on the principle of simple division and making the tube as integrated as possible.

[0048] The application of structural node connection includes structural connection nodes and building structural nodes. Among them, structural connection nodes are mainly reflected between floor slabs, between shear walls, and between shear walls and floor slabs. Structural connection nodes adopt wet connection, dry connection and mixed connection. Among them, wet connection adopts sleeve grouting connection, reserved steel bar binding and constrained slurry anchor connection. Among them, sleeve grouting connection includes full grouting sleeve and semi-grouting sleeve; constrained slurry anchor connection adopts spiral hoop slurry anchor overlap and corrugated pipe slurry anchor overlap. Dry connection adopts bolt connection or welding. Hybrid connection adopts mortise and tenon connection, including welding and reserved steel bar binding followed by on-site pouring. The mortise and tenon connection method combines the reserved steel bar binding connection in wet connection with the welding connection in dry connection. By increasing the contact area through staggered bite, the connection strength between structures is enhanced to achieve the purpose of strong nodes.

[0049] See Figure 5-7 , building structure nodes are mainly used for the connection of thermal insulation, fire protection and waterproof structures.

[0050] Insulation and fire prevention: Ordinary insulation materials are used (A-grade rock wool insulation board 31 for partition and B1-grade extruded polystyrene board 20 for enclosure).

[0051] Waterproofing: As the prefabricated exterior walls are connected by on-site pouring, there are no cavities or drips between the panels. Two galvanized steel plates 22 are set at the A-grade rock wool insulation belt 31 as sheathing to ensure the integrity of the structural connection between the structural support walls, cylinders and floor slabs, thus ensuring safety.

[0052] When applying the prefabricated high-rise residential cylindrical shell ribbed floor structure system, first change the layout of the shear wall in the wall system. The layout of the load-bearing wall of the currently selected apartment can be found in Figure 6 According to the original situation of the selected apartment, remove the original shear wall inside the apartment, keep the outer shear wall and the shear wall between the apartments, and keep the door and window openings on the exterior wall. When splitting the wall system, the principle is to have fewer specifications and more combinations, such as Figure 2-1 The wall system is constructed using the cylindrical formwork dense-rib prestressed floor structure system.

[0053] like Figure 2-2The vertical shaft layout is shown in Figure 1. The vertical shaft in the vertical structure mainly includes the kitchen module h, the bathroom module i, the balcony module g, the traffic core and various pipe shaft modules k. Due to the structural support of each module, the symmetrical, dispersed and balanced layout principles should be adopted when designing the location to meet the seismic requirements.

[0054] 1. Connection between floors

[0055] See Figure 5-1 , the horizontal structure includes three types of floor slabs: formwork dense-ribbed floor slabs, ordinary prefabricated floor slabs and ordinary cast-in-place floor slabs. The formwork dense-ribbed floor slabs are connected at the nodes by cast-in-place wide flat beams 2, and are connected by the reserved steel bar binding connection method in the wet connection. The plate reinforcement 3 of the formwork dense-ribbed floor slab is thrown out and used to be cast in place after binding with the connecting beam reinforcement 5. The rib beam reinforcement 9 of the reserved formwork dense-ribbed floor slab is cast in place after binding with the formwork dense-ribbed floor slab beam stirrups 7, the formwork dense-ribbed beam main reinforcement 8, the connecting beam reinforcement 4 and the connecting beam stirrups 5. The building finished surface elevation 6 refers to the elevation of the building finished surface after the construction of the building decorative surface layer is completed.

[0056] In addition, the type of floor-to-floor connection also includes the connection between the formwork ribbed floor and other floors. Figure 5-2 The figure shows the connection node diagram of the formwork multi-ribbed floor slab and the ordinary cast-in-place floor slab, which is also applicable to the connection of the formwork multi-ribbed floor slab and the ordinary precast floor slab. The plate reinforcement 3 of the formwork multi-ribbed floor slab is thrown out to be tied with the connecting beam reinforcement, and the reserved reinforcement 10 of the ordinary cast-in-place floor slab or the ordinary precast floor slab is thrown out and also tied with the connecting beam reinforcement, and the two parts are connected by pouring concrete at the connection.

[0057] In order to facilitate equipment installation, drainage and separation of wet and dry areas, the bathroom space needs to be lowered. The connection nodes are relatively special. Figure 5-3 As shown. Although this node belongs to the wet connection method, it can reflect the characteristics of the staggered bite of the mortise and tenon connection nodes. This node is the connection between the formwork dense-ribbed floor slab and the upper and lower shear wall cylinders and the floor slab prefabricated as a whole with the cylinder. Reinforcements are reserved for the three parts respectively, and the formwork dense-ribbed floor slab and the cylinder (wall panel) are connected with reinforcement 11, the upper cylinder (wall panel) and the lower cylinder (wall panel) are reinforced 13, and the bathroom (kitchen, balcony) cylinder (wall panel) is reinforced 15. The bathroom (kitchen) floor reinforcement 14 can be prefabricated as a whole with the cylinder (surrounding wall panels). The wet connection method is adopted at the connection point, and the post-cast floor slab and the cylinder (wall panel) are connected with the reserved steel bars and the post-cast reinforced concrete 12. It should be noted that the bathroom floor slab needs to be lowered, and there is a height difference between the finished surface of the bathroom building and the finished surface of other space buildings.

[0058] 2. Connection between prefabricated shear walls

[0059] The connection between prefabricated shear walls is a mixed connection, which includes both the reserved steel bar binding in the wet connection and the welding in the dry connection. By applying the traditional Chinese mortise and tenon structure connection principle, the contact area is increased to achieve the role of a strong node. In addition, this connection method is not only used for the connection between walls, but also includes the connection between shear walls and cylinders.

[0060] like Figure 5-4 The figure is a schematic diagram of the T-shaped connection node between the shear wall outer wall 17 and the shear wall inner wall 16. When the shear walls are connected, the welding method in the dry connection is first used. A 10mm thick steel plate embedded part 19 is embedded at 60mm near the outdoor side and anchored by welding. When the shear wall and the shear inner wall are connected, a 40mm wide steel plate embedded part 19 is embedded and anchored by welding. Then the three reserved steel bars are tied by wet connection. Finally, the post-cast concrete is poured between the three to form the post-cast column steel bars and the reinforced concrete hidden column 18 for connection. The purpose of strong nodes is achieved by adopting a new dry and wet mixed mortise and tenon connection method.

[0061] like Figure 5-5 It is a schematic diagram of the L-shaped connection node between the outer walls of the shear wall and the outer walls of the shear wall. It can also reflect the characteristics of the new dry and wet mixed mortise and tenon connection method. After completing the prefabricated reinforced concrete exterior wall panels and reinforcement 21, first use the welding in the dry connection to pre-embed the 10mm thick steel plate embedded parts 19 at 60mm near the outdoor side and anchor them by welding; at 40mm on the indoor side, pre-embed the 10mm thick steel plate embedded parts 19, and anchor the 10mm thick galvanized steel plate 22 and the embedded parts by welding. Then use the wet connection to tie the two parts of the reserved steel bars, and finally connect them with post-cast concrete. Among them, the reserved steel bars are used to form the steel bars in the post-cast column and the reinforced concrete hidden column 18 for connection, which belongs to the second insurance.

[0062] like Figure 5-6 The schematic diagram of the connection node between the outer wall 17 of the shear wall and the cylinder of the shear wall. The purpose of strengthening the node is also achieved by adopting a new type of mortise and tenon connection method that mixes dry and wet. After the reinforcement 23 of the prefabricated cylinder and the reinforcement 26 of the prefabricated outer reinforced concrete wall panel are completed, first, a 10mm thick steel plate embedded part 19 is embedded 60mm away from the outdoor side and anchored by welding; in addition, the two are connected by using the reserved steel bars, the steel bars 24 at the post-casting strip and the high-grade reinforced concrete 25 to form a hidden column, forming a second insurance.

[0063] In terms of building structural nodes, the shear exterior wall has its own extruded polystyrene board 20 insulation layer, which uses B1 grade fireproof material. The thickness of the insulation layer needs to be calculated based on actual needs.

[0064] 3. Connection between prefabricated shear wall and floor slab

[0065] like Figure 5-7 , the connection nodes between precast shear wall and floor slab, the connection nodes between precast shear wall outer wall and formwork ribbed floor slab, and the connection nodes between precast shear wall inner wall and floor slab are explained. When connecting the formwork ribbed floor slab to the shear wall or shear wall cylinder, the three parts are reserved for reinforcement, namely, the upper cylinder (wall panel) and the lower cylinder (wall panel) reinforcement 13, the precast formwork ribbed floor slab, the precast floor slab and the cylinder (wall panel) connection reinforcement 27 and the lower and upper cylinder (wall panel) connection reinforcement 28. The reserved steel bars in the wet connection are tied and then poured into concrete. The rock wool board insulation (grade A) 31 and the extruded polystyrene board (grade B1) 20 should be nailed to the wall panel 29, leaving galvanized steel plate dripping 30. Different from the general rigid connection, the contact area is increased by staggered bite, highlighting the traditional Chinese mortise and tenon structure principle.

[0066] like Figure 5-8 In order to connect the shear inner wall with the formwork dense-ribbed floor and ordinary floor, steel bars are also reserved for four parts, namely, the connection reinforcement 11 between the formwork dense-ribbed floor and the cylinder (wall panel), the reinforcement 13 between the upper cylinder (wall panel) and the lower cylinder (wall panel), the reinforcement 32 at the connection between the lower layer and the upper layer and the floor, and the connection and reinforcement 33 between the ordinary floor and the cylinder (wall panel). The post-cast concrete connection method in the wet connection is used for connection at the connection.

[0067] It should be noted that all the above reserved steel bar grades, models and diameters must be calculated and determined by the structural engineer, and the reserved length and binding of the steel bars should be implemented in accordance with the relevant structural and seismic requirements. The connection of the above structural nodes, whether wet connection or hybrid connection, reflects the mortise and tenon principle at the connection node, and expands the joint area through staggered bite. Among them, the use of welding anchors at the contact parts of the hybrid connection can effectively improve the integrity and structural strength of the building.

[0068] Example

[0069] Through market research, it is found that there are a large number of residential units with two households per elevator, four households per two elevators, and six households per elevator on the market. Therefore, the mainstream unit type of a well-known real estate, that is, two households per elevator, is selected as the representative unit type to explain the application of the prefabricated and assembled high-rise residential cylindrical formwork with dense-rib prestressed floor structure combination.

[0070] Take one elevator and two households as an example

[0071] 1) Application of vertical structure form - wall system,

[0072] See attached for details Figure 2-1 , the arrangement of shear walls in the wall system;

[0073] 2) Application of vertical structure - vertical shaft,

[0074] See attached for details Figure 2-2 , vertical shaft arrangement. When designing the vertical shaft, it is advisable to adopt the principles of symmetry, dispersion and balance to create a stable force-bearing structure and cooperate with the wall system to achieve the arrangement without other shear walls in the house.

[0075] 3) Application of horizontal structure

[0076] See attached for details Figure 3-1 , free space floor layout

[0077] See attached for details Figure 3-2 , Non-free space floor layout

[0078] In the free space, formwork ribbed slabs, ordinary cast-in-place slabs and ordinary prefabricated slabs are used, and the slabs in the non-free space are prefabricated slabs of each cylinder as a whole.

[0079] Application of constructing node connections

[0080] 1) Connection between floors

[0081] See attached for details Figure 5-1 , the connection drawing of the formwork shell and ribbed plate

[0082] See attached for details Figure 5-2 , the connection nodes between the formwork ribbed floor and other floor slabs

[0083] See attached for details Figure 5-3 , the formwork ribbed floor and the bathroom cylinder floor drop-down treatment node connection

[0084] 2) Connection between prefabricated shear walls

[0085] Shear external wall and cylinder node connection

[0086] See attached for details Figure 5-4 , T-shaped shear wall node connection

[0087] See attached for details Figure 5-5 , L-type shear wall connection node

[0088] 3) Connection between prefabricated shear wall and floor slab

[0089] See attached for details Figure 5-7 , shear external wall and floor connection node

[0090] See attached for details Figure 5-8 , shear force internal wall and floor connection node

[0091] Free space variability

[0092] See attached for details Figure 7-1, free space during the wedding period;

[0093] See attached for details Figure 7-2 , free space during the first child period;

[0094] See attached for details Figure 7-3 , free space during the second child period;

[0095] See attached for details Figure 7-4 , schematic diagram of free space in old age.

[0096] Features of the Invention

[0097] 1) Reasonable structure

[0098] It is supported by prefabricated shear walls and cylinders in the vertical direction and by formwork ribbed floor slabs in the horizontal direction. They are connected through reasonable node design, making the structure scientific and reasonable, with good earthquake resistance and ensuring structural safety.

[0099] 2) Effectively improve assembly rate and integration

[0100] By fixing the location of the traffic core in the public area and the location of the indoor kitchen, bathroom, and balcony functional spaces, these four functional spaces are produced in the factory in the form of blocks, which improves the integration and enables on-site prefabrication and hoisting, thereby greatly improving the assembly rate and effectively alleviating the contradiction between the production capacity and output of prefabricated component factories.

[0101] 3) Realize variable space

[0102] Through the coordination of cylinders and shear walls in public areas and units, as well as formwork ribbed floor slabs, free space can be made variable, achieving the goal of building century-old houses in my country.

[0103] The high-rise residential buildings which use the prefabricated assembled high-rise residential cylindrical shell with dense ribbed prestressed floor structure have the following characteristics: regular apartment plan shapes, centralized arrangement of free space modules and decentralized arrangement of non-free space modules.

[0104] The detailed description of the prefabricated and assembled high-rise residential cylindrical shell ribbed floor structure system with reference to the above embodiment is illustrative rather than restrictive, and several embodiments can be listed according to the limited scope. Therefore, changes and modifications without departing from the overall concept of the present invention should fall within the scope of protection of the present invention.

Claims

1. A prefabricated high-rise residential cylindrical shell prestressed floor structure system, characterized by: It includes a vertical cylinder structure, a horizontal floor structure and a structural connection node, wherein the structural connection node includes a structural connection point and a building structural node, and the vertical cylinder structure is connected with the horizontal floor structure through the structural connection node to form an overall structure of a high-rise residential building; The vertical cylinder structure includes a wall system and a vertical cylinder, the vertical cylinder includes an indoor part and an outdoor part, the indoor part includes a kitchen module, a bathroom module, a storage room and a balcony module, and the outdoor part includes a traffic core and an equipment well module; The wall system adopts prefabricated shear walls arranged on the exterior walls and partition walls of the house type, playing the role of enclosure and bearing vertical and horizontal loads; The horizontal floor structure includes free space floor and non-free space floor, the free space floor includes formwork ribbed floor, ordinary cast-in-place floor and ordinary prefabricated floor, and the non-free space floor is a prefabricated floor; The slab reinforcement of the formwork ribbed floor is thrown out to be tied with the connecting beam reinforcement, and the reserved reinforcement of the ordinary cast-in-place floor or ordinary prefabricated floor is thrown out and also tied with the connecting beam reinforcement, and the two parts are connected by pouring concrete at the connection; When connecting the formwork dense-ribbed floor slab with the shear wall or shear wall cylinder, steel bars are reserved for the three parts, namely, the reinforcement of the upper cylinder and the lower cylinder, the reinforcement of the precast formwork dense-ribbed floor slab, the reinforcement at the connection between the precast floor slab and the cylinder, and the reinforcement at the connection between the lower and upper cylinders. The reserved steel bars in the wet connection are tied and then poured with concrete. The rock wool board insulation and the extruded polystyrene board are nailed to the wall panel, leaving the galvanized steel plate to drip.

2. The prefabricated high-rise residential cylindrical shell prestressed floor structure system according to claim 1 is characterized by: The kitchen module and the bathroom module are pentahedral cylinder structures surrounded by four walls and a floor.

3. The prefabricated high-rise residential cylindrical shell prestressed floor structure system according to claim 1 is characterized by: The balcony module is formed by shear walls to semi-enclose the shaft structure.

4. The prefabricated high-rise residential cylindrical shell prestressed floor structure system according to claim 1 or 2 is characterized in that: The wall system comprises an external wall without openings, an external wall with a high window sill and a window opening, an external wall with a low window sill and a window opening, an external wall with two window openings and an external wall with a door opening.

5. The prefabricated high-rise residential cylindrical shell prestressed floor structure system according to claim 1 is characterized by: The traffic core and equipment manhole module includes evacuation stairs, elevators, equipment manholes, antechambers and public walkways.

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