Connecting structure of modular building floors and modular building

Abstract

According to the connecting structure of the modular building floor and the modular building, floor floors of left and right adjacent module units are connected through a combined structure of high-strength bolts and steel connecting plates, secondary concrete pouring on site is not needed, the construction speed is high, and maintenance is easy. Notches are reserved at module joints of floor slabs, high-strength bolts and steel connecting plates are connected in the notches, steel plates are pre-buried on upper and lower plate surfaces in the notches, sleeves are pre-buried at the joints of the high-strength bolts in the plates, and the pre-buried sleeves and the pre-buried steel plates are welded into a whole, so that reasonable node force transfer is guaranteed after the high-strength bolts apply pre-tightening force, and the strength of concrete plates meets requirements. Roof floor slabs of the modular building adopt roof prefabricated slab layers to be overlapped with top concrete cast-in-place layers, the waterproof requirement is met, the roof prefabricated slab layers are connected through combination of high-strength bolts and steel connecting plates, part of reinforcing steel bars of the cast-in-place layers are pre-buried into the prefabricated slab layers, the laminated slab effect is formed, and the workload of on-site reinforcing steel bar laying is reduced.

Description

Technical Field

[0001] This utility model relates to the field of modular building technology, specifically to a connection structure for a modular building floor slab and a modular building. Background Technology

[0002] Modular construction technology breaks down buildings into independent modular units. These units undergo structural, architectural, electrical, and plumbing processes in the factory, and are then rapidly assembled into a complete building on the construction site using efficient connection technologies.

[0003] In modular construction, connection technology is crucial for ensuring the building's integrity and structural safety. The design of connection nodes must ensure stable force transmission, a rational structure, and convenient construction. Depending on whether on-site secondary pouring is required, connection methods can be broadly categorized into wet connections and dry connections. Wet connections typically involve pre-installing reinforcing steel on-site and then pouring or grouting secondary concrete to connect components. While this method offers performance comparable to cast-in-place structures, the construction process is more complex, quality control is more difficult, and time-consuming. In contrast, dry connections primarily use bolted connections, eliminating the need for on-site secondary pouring. They offer faster construction speeds, are easier to maintain, promote material recycling, and align better with the development direction of industrialized construction.

[0004] In my country, the integration of modular concrete structures still needs improvement. Currently, many so-called modular buildings actually still use traditional prefabricated construction methods, which involve transporting prefabricated components (such as beams, columns, walls, and stairs) from the factory to the site for assembly, followed by electromechanical and interior decoration work. This approach weakens the industrial advantages that modular buildings should have. Furthermore, the application of dry connection technology in my country is relatively limited, and the scope and performance of dry connections for prefabricated components are restricted. For example, while there are methods for connecting prefabricated floor slabs, equal-strength connections are not achieved. Utility Model Content

[0005] Purpose of the utility model: In order to solve the problems existing in the prior art, this utility model provides a connection structure for modular building floor slabs and modular buildings, which does not require secondary on-site pouring, is easy to maintain, and the rigidity and load-bearing capacity of the applied modular building floor slabs meet the requirements.

[0006] Technical Solution: To achieve the above objectives, the present invention can adopt the following technical solution: a modular building floor slab connection structure, wherein the floor slabs of adjacent left and right module units are connected by a combination structure of high-strength bolts and steel connecting plates, the floor slab is a double-layer slab including an upper module bottom plate and a lower module top plate on the left and right sides, the connection between the double-layer slabs adopts a dry high-strength bolt connection node, and a groove is left at the module connection of the floor slab, the high-strength bolts and the steel connecting plates are connected in the groove.

[0007] Furthermore, the upper module bottom plate and the lower module top plate on the left and right sides are provided with embedded steel plates on the upper and lower surfaces of the slot. The embedded steel plates have holes at the high-strength bolt connections. The upper module bottom plate and the lower module top plate are provided with embedded sleeves at the high-strength bolt connections. The embedded sleeves and the embedded steel plates are welded together at the junction to form a whole.

[0008] Furthermore, multiple anchor bars, at least six, are welded and embedded between the embedded steel plates on the upper and lower surfaces of the floor slab.

[0009] Furthermore, when used for connection between adjacent floor slabs, the steel connecting plate spans across the two adjacent floor slabs within the groove, and the high-strength bolt passes through the steel connecting plate, the embedded steel plate, and the sleeve at the connection point of the adjacent floor slabs on both sides; the high-strength bolt is preloaded.

[0010] Furthermore, the connection between the left and right adjacent floor slabs has a horizontal gap of 8-15mm, more preferably a horizontal gap of 10mm, and the gap is filled with a rubber gasket.

[0011] Furthermore, to ensure the strength, rigidity, and stability of the module unit during transportation and installation, some side walls of the module unit are open, and temporary steel supports are provided at the openings.

[0012] The modular building structure described above utilizes a modular building system including a roof slab, a ground floor slab, and a top floor slab. The top floor slab and the ground floor slab are connected by a combination of high-strength bolts and steel connecting plates. The roof slab consists of a precast roof slab layer superimposed with a top cast-in-place concrete layer. The precast roof slab layer is connected by a combination of high-strength bolts and steel connecting plates. The top cast-in-place concrete layer meets waterproofing requirements.

[0013] Furthermore, some of the reinforcing bars in the top cast-in-place concrete layer are pre-embedded in the precast roof slab layer, forming a composite slab effect and reducing the workload of on-site reinforcement laying.

[0014] Furthermore, interior decoration and electromechanical pipeline layout are carried out on the roof slab, ground floor slab, and floor slab.

[0015] Beneficial effects: This utility model has the following advantages: (1) The connection structure of this utility model adopts high-strength bolt connection, which is suitable for modular building floor slab connection. It does not require secondary pouring on site, has a fast construction speed, is easy to maintain, and is conducive to the recycling of materials. (2) The upper and lower plates of the floor slab groove of this utility model are pre-embedded with steel plates, and the high-strength bolt connection is pre-embedded with sleeves. The pre-embedded sleeves and pre-embedded steel plates are welded to form an integral whole, ensuring that the force transmission at the node is reasonable after the high-strength bolts are applied with pre-pressure, and the stiffness and bearing capacity of the concrete slab meet the requirements. (3) Due to the waterproofing requirements, the roof floor slab of this utility model adopts the method of precast slab superimposed with top concrete cast-in-place layer. Some of the steel bars of the cast-in-place layer are pre-embedded into the precast slab layer to form a composite slab effect and effectively reduce the workload of on-site steel bar laying. (4) This utility model adopts high-strength bolts and pre-embedded parts for dry connection technology of precast floor slabs, which can achieve equal strength connection of floor slabs, improve the performance of dry connection, enrich the dry connection method, promote the research and application technology progress of dry connection method of precast concrete components, and expand the application scenarios. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the modular building structure in an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the modular building three-dimensional structure disassembly in an embodiment of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of a single module unit in an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the planar structure of a single module unit in an embodiment of this utility model;

[0020] Figure 5 This is a schematic diagram of the floor slab connection planar structure in an embodiment of the present utility model;

[0021] Figure 6 This is a schematic diagram of the node structure for connecting the modular floor slabs of this utility model;

[0022] Figure 7 To Figure 6 A sectional view along the AA direction;

[0023] Figure 8 To Figure 6 A sectional view along the BB direction;

[0024] Figure 9 This is a three-dimensional structural diagram of the pre-embedded steel plate and sleeve in the modular floor slab of this utility model;

[0025] Figure 10This is a schematic diagram of the node structure for connecting the modular roof floor slabs of this utility model.

[0026] Figure 11 To Figure 10 A cross-sectional view along the CC direction.

[0027] Figure 12 To Figure 10 A sectional view along the DD direction.

[0028] Attached reference numerals: 101-Modular building, 1-Module unit, 2-Upper module base plate, 3-Lower module top plate, 4-Temporary steel support, 5-Groove, 6-High-strength bolt, 7-Steel connecting plate, 8-Embedded steel plate, 9-Embedded sleeve, 10-Anchor bar, 11-Rubber gasket, 12-Precast roof slab, 13-Cast-in-place roof layer. Detailed Implementation

[0029] To make the technical features and effects of this utility model easier to understand, the following embodiments, in conjunction with the accompanying drawings, provide a more detailed explanation of the connection structure of the modular building floor slab and the structure and usage principle of the modular building.

[0030] Example 1

[0031] Please refer to Figure 1 The diagram shown is a three-dimensional structural schematic of a modular building 101 using the modular building floor slab connection structure disclosed in this utility model. Figure 2 This is a diagram showing the breakdown.

[0032] Please refer to Figure 3 and Figure 4 The diagram shows the three-dimensional and planar structures of a single module unit 1. The floor slabs of adjacent module units are connected via a combination of high-strength bolts 6 and steel connecting plates 7. A planar structural diagram of the floor slab connection is shown below. Figure 5 As shown, Figure 6 This is a schematic diagram of the connection node structure. The floor slab is a double-layered slab consisting of an upper module bottom plate 2 and a lower module top plate 3 on both the left and right sides. The connection between the double-layered slabs is achieved by using dry high-strength bolts 6 to connect the nodes. The module connection points of the floor slab have slots 5, and the high-strength bolts 6 are connected to the steel connecting plates 7 within the slots 5.

[0033] Furthermore, the upper module bottom plate 2 and lower module top plate 3 on both the left and right sides are provided with embedded steel plates 8 on their upper and lower surfaces within the slot 5. The embedded steel plates 8 and the slot 5 have the same planar dimensions. The embedded steel plates 8 have openings at the high-strength bolt 6 connection points. Embedded sleeves 9 are provided within the upper module bottom plate 2 and lower module top plate 3 on both the left and right sides at the high-strength bolt 6 connection points. The embedded sleeves 9 and the embedded steel plates 8 are welded together at the junction to form a single unit. (See reference for details.) Figures 6-8 As shown.

[0034] Please refer to Figure 9 As shown, six anchor bars 10 are pre-embedded in the node area of ​​the upper and lower surfaces of the floor slab, and the anchor bars 10 are welded to the upper and lower pre-embedded steel plates 8.

[0035] When used for connection between adjacent floor slabs, the steel connecting plate 7 spans across the two adjacent floor slabs within the groove. The high-strength bolt 6 passes through the steel connecting plate 7 at the connection point of the adjacent floor slabs on both sides, with a pre-embedded steel plate 8 and sleeve 9. The high-strength bolt 6 applies preload to ensure the rigidity and load-bearing capacity of the floor slab connection. A 10mm horizontal gap is left at the connection point of the adjacent floor slabs, and a rubber gasket 11 is filled in the gap.

[0036] To ensure the strength, rigidity, and stability of the module unit during transportation and installation, some side walls of the module unit are open, and temporary steel supports are provided at the openings.

[0037] The modular building structure described above utilizes modular construction techniques, including roof slabs, ground floor slabs, and surface slabs. These slabs are used for interior decoration and the installation of mechanical and electrical pipelines. The ground floor slabs and surface slabs are connected using a combination of high-strength bolts 6 and steel connecting plates 7. The roof slab consists of a precast roof slab layer 12 superimposed with a top cast-in-place concrete layer 13. The precast roof slab layer 12 is connected using a combination of high-strength bolts and steel connecting plates. The top cast-in-place concrete layer 13 meets waterproofing requirements. Some of the reinforcing bars in the top cast-in-place concrete layer 13 are embedded in the precast roof slab layer 12, creating a composite slab effect and reducing the workload of on-site reinforcement laying. Please refer to [reference needed] for details. Figures 10-12 As shown.

[0038] This utility model's modular building floor slab connection structure utilizes high-strength bolts, achieving equal-strength connections between floor slabs, improving the performance of dry-connection methods, enriching dry-connection techniques, eliminating the need for on-site secondary concrete pouring, accelerating construction, facilitating maintenance, and promoting material recycling. The pre-embedded sleeves and steel plates within the floor slab grooves are welded together to ensure reasonable force transmission at the joints after the high-strength bolts are pre-tightened, and the concrete slab strength meets requirements. The stacking method of the roof floor slabs meets waterproofing requirements, and some of the reinforcing steel in the cast-in-place layer is pre-embedded into the precast slab layer, creating a composite slab effect and reducing the workload of on-site reinforcing steel laying.

Claims

1. A connection structure for modular building floor slabs, characterized in that... The floor slabs of adjacent left and right module units are connected by a combination of high-strength bolts and steel connecting plates. The floor slab is a double-layered slab consisting of an upper module bottom plate and a lower module top plate on the left and right sides. The connection between the double-layered slabs is achieved by dry high-strength bolt connection nodes. The module connection points of the floor slabs have slots, and the high-strength bolts are connected to the steel connecting plates within the slots.

2. The connection structure of the modular building floor slab according to claim 1, characterized in that: The upper module bottom plate and lower module top plate on the left and right sides are provided with embedded steel plates on the upper and lower surfaces of the slot. The embedded steel plates have holes at the high-strength bolt connections. The upper module bottom plate and lower module top plate on the left and right sides are provided with embedded sleeves at the high-strength bolt connections. The embedded sleeves and the embedded steel plates are welded together at the junction to form a whole.

3. The connection structure of the modular building floor slab according to claim 2, characterized in that: Multiple anchor bars, at least 6, are welded and embedded between the embedded steel plates on the upper and lower surfaces of the floor slab.

4. The connection structure of the modular building floor slab according to claim 2, characterized in that... When used for connection between adjacent floor slabs, the steel connecting plate spans across the two adjacent floor slabs in the groove, and the high-strength bolt passes through the steel connecting plate, the embedded steel plate and the sleeve at the connection point of the adjacent floor slabs on the left and right sides; the high-strength bolt is preloaded.

5. The connection structure of the modular building floor slab according to claim 4, characterized in that: A horizontal gap is left at the connection between the left and right adjacent floor slabs, and the gap is filled with a rubber gasket.

6. The connection structure of the modular building floor slab according to claim 1, characterized in that: The sidewall of the module unit is open, and temporary steel supports are provided at the openings.

7. A modular building using the connection structure of the modular building floor slab as described in claim 1, characterized in that... It includes a roof slab, a ground floor slab, and a top floor slab. The top floor slab and the ground floor slab are connected by a combination of high-strength bolts and steel connecting plates. The roof slab consists of a precast roof slab layer superimposed with a top cast-in-place concrete layer. The precast roof slab layers are connected by a combination of high-strength bolts and steel connecting plates.

8. The modular building according to claim 7, characterized in that: Some of the reinforcing bars in the top cast-in-place concrete layer are pre-embedded in the precast roof slab layer.

9. The modular building according to claim 7, characterized in that... Interior decoration and electromechanical pipeline layout are carried out on the roof slab, ground floor slab, and floor slab.

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