Shear-resistant mounting structure of continuous composite floor slab and steel beam and mounting method thereof

Abstract

The application provides a shear-resistant mounting structure of a continuous composite floor and a steel beam and a mounting method thereof, and belongs to the field of fabricated buildings. The structure comprises a steel beam, a prefabricated composite bottom plate and a shear-resistant connecting pipe. The prefabricated composite bottom plate is laid on the steel beam and is a continuous structure at least at a position corresponding to the steel beam, and a post-poured floor layer is formed above the prefabricated composite bottom plate. The shear-resistant connecting pipe penetrates the prefabricated composite bottom plate and is arranged at a position corresponding to the steel beam. After the prefabricated composite bottom plate is installed, the upper flange of the steel beam is welded through the space in the pipe of the shear-resistant connecting pipe. The shear-resistant connecting pipe is engaged with the prefabricated composite bottom plate and the post-poured floor layer to provide the shear-resistant capacity between the steel beam and the floor.

Description

Technical Field

[0001] This invention belongs to the field of prefabricated buildings, and in particular relates to a shear-resistant installation structure and installation method of a continuous composite floor slab and steel beam. Background Technology

[0002] In prefabricated steel structure buildings, when composite slabs are used for floor slabs, if continuous composite slabs are to be used, the connection between the composite slabs and the steel beams is a problem, because composite slabs are not as easy to weld studs through the bottom plate as steel truss floor slabs.

[0003] To ensure a reliable connection between the floor slab and the steel beams that act as intermediate supports for the composite slab, stud holes can be pre-drilled in the bottom slab of the composite slab. After the composite floor slab is laid, studs are then welded into these holes. However, pre-drilling stud holes will introduce a series of problems, such as:

[0004] The limited space for on-site operation of stud holes makes it quite troublesome;

[0005] When the diameter of the studs is large and two or more rows of studs are arranged, the structural thickness of the upper flange of the steel beam will increase, thereby increasing the amount of steel used in the steel beam, which is uneconomical.

[0006] When casting precast base slabs, factories need PVC or other materials as templates for reserving stud holes. After the base slab is formed, the templates are removed, which wastes materials, increases the number of processes, and results in low production efficiency and high costs.

[0007] In the traditional practice of reserving stud holes in composite slabs, the lack of effective reinforcement measures leads to a significant weakening of the composite slab cross section, which in turn reduces the stiffness and load-bearing capacity of the composite slab during the construction phase.

[0008] In summary, to fully utilize the pre-reserved stud hole formwork material in the composite slab, using it both as formwork and as a shear key connecting the composite slab to the steel beam, thereby improving material utilization, simplifying construction procedures, reducing production and construction difficulty, increasing production efficiency, and reducing costs. Simultaneously, by using steel pipe formwork as a reinforcement measure for the composite slab, the weakening effect of the pre-reserved stud holes on the stiffness and load-bearing capacity of the composite slab is effectively reduced. Therefore, this application was developed. Summary of the Invention

[0009] One objective of this invention is to provide a continuous composite floor slab shear-resistant installation structure that offers better shear resistance and economy compared to stud structures.

[0010] The second objective of this invention is to provide a shear-resistant installation method for continuous composite floor slabs that offers better shear resistance and cost-effectiveness compared to stud structures.

[0011] To achieve one of the aforementioned objectives, the present invention first provides a shear-resistant installation structure for continuous composite floor slabs and steel beams, characterized in that it comprises:

[0012] steel beams;

[0013] A precast composite base slab is laid on the steel beam and is a continuous structure at least at the location corresponding to the steel beam. A post-cast floor slab is formed above the precast composite base slab.

[0014] A shear-resistant connecting pipe is embedded in the precast composite base slab and positioned corresponding to the steel beam. After the precast composite base slab is installed, it is welded to the upper flange of the steel beam through the internal space of the shear-resistant connecting pipe. The shear-resistant connecting pipe engages with the precast composite base slab and the post-cast floor slab to provide shear resistance between the steel beam and the floor slab.

[0015] Preferably, the bottom end of the shear-resistant connecting pipe is welded to the steel beam.

[0016] Preferably, the bottom end of the inner wall of the shear-resistant connecting pipe is welded to the steel beam.

[0017] Preferably, the bottom ends of the inner walls of the shear-resistant connecting pipes extend towards each other to form rolled edges; the rolled edges are welded to the upper flange of the steel beam.

[0018] Preferably, the top of the shear-resistant connecting pipe extends beyond the post-cast floor slab.

[0019] Preferably, the shear-resistant connecting pipe is integrally cast with the precast composite base plate.

[0020] Preferably, the shear-resistant connecting pipe includes, but is not limited to, round steel pipe, square steel pipe, and triangular steel pipe.

[0021] The technical effects of the above-mentioned technical solutions of the present invention arise from one or more of the following combinations:

[0022] This invention incorporates shear-resistant connecting pipes integrally formed with the precast composite base slab, allowing for full utilization of the material with pre-reserved stud holes in the composite slab. The shear-resistant connecting pipes serve as both templates and shear keys connecting the composite slab to the steel beams, improving material utilization, reducing processes, lowering production and construction difficulty, increasing efficiency, and reducing costs. At the same time, it minimizes the weakening of the composite slab's stiffness and load-bearing capacity caused by traditional pre-reserved stud holes.

[0023] The structure of this invention is convenient for manufacturing composite panels in a factory; the holes are reinforced by shear-resistant connecting pipes; and the shear resistance is increased by shear-resistant connecting pipes.

[0024] To achieve the above two objectives, the present invention provides a shear-resistant installation method for continuously composite floor slabs and steel beams, characterized by comprising the following steps:

[0025] The shear-resistant connecting pipe is prefabricated integrally with the prefabricated composite base plate, so that the shear-resistant connecting pipe passes through the prefabricated composite base plate;

[0026] The prefabricated composite base plate is laid on the steel beam, and the position of the shear-resistant connecting pipe is aligned with the steel beam;

[0027] The shear-resistant connecting pipe is fixed to the steel beam, and floor concrete is poured on the post-cast floor slab above the precast composite base slab, and cured to form a continuous composite floor slab.

[0028] Preferably, the bottom end of the inner wall of the shear-resistant connecting pipe is welded to the steel beam.

[0029] Preferably, the top of the shear-resistant connecting pipe extends into the post-cast floor slab, forming a shear-resistant effect after the floor concrete is poured into the post-cast floor slab.

[0030] The technical effects of the above-mentioned technical solutions of the present invention arise from one or more of the following combinations:

[0031] This invention incorporates shear-resistant connecting pipes integrally formed with the precast composite base slab, allowing for full utilization of the material with pre-reserved stud holes in the composite slab. The shear-resistant connecting pipes serve as both templates and shear keys connecting the composite slab to the steel beams, improving material utilization, reducing processes, lowering production and construction difficulty, increasing efficiency, and reducing costs. At the same time, it minimizes the weakening of the composite slab's stiffness and load-bearing capacity caused by traditional pre-reserved stud holes.

[0032] The shear-resistant connecting pipe is integrally formed with the precast composite base plate, which simplifies the production process and reduces the difficulty of production and construction; at the same time, it improves production efficiency and construction quality, reduces costs, and improves economic benefits.

[0033] Shear-resistant connecting pipes reduce the weakening effect of stud holes on the stiffness and load-bearing capacity of composite slabs, thereby improving structural safety. Attached Figure Description

[0034] Figure 1 This is a perspective view illustrating the shear-resistant installation structure of the continuous composite floor slab and steel beam of the present invention.

[0035] Figure 2 This is a front view of the shear-resistant installation structure of the continuous composite floor slab and steel beam of the present invention.

[0036] Figure 3 This diagram illustrates the structure of the prefabricated composite base plate in this invention.

[0037] Figure 4 The diagram illustrates the structure of the shear-resistant connecting pipe in this invention.

[0038] Figure 5 The diagram shows a top view of the shear-resistant connecting pipe in this invention. Detailed Implementation

[0039] The following description is provided to enable those skilled in the art to implement and use the invention and adapt it to specific application contexts. Various modifications and uses in different applications will be readily apparent to those skilled in the art, and the general principles defined herein are applicable to a wide range of embodiments. Therefore, the invention is not limited to the embodiments given herein, but should be granted the broadest scope consistent with the principles and novel features disclosed herein.

[0040] In the following detailed description, numerous specific details are set forth to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that practice of the invention is not necessarily limited to these specific details. In other words, well-known structures and devices are shown in block diagram form without being depicted in detail to avoid obscuring the invention.

[0041] Readers should note all documents and references submitted concurrently with this specification and open to public inspection, the contents of which are incorporated herein by reference. Unless otherwise expressly stated, all features disclosed in this specification (including any appended claims, abstracts, and drawings) may be replaced by alternative features for the same, equivalent, or similar purposes. Therefore, unless explicitly stated otherwise, each disclosed feature is merely one example of a set of equivalent or similar features.

[0042] Note that, where used, the markings left, right, front, back, top, bottom, front, back, clockwise, and counterclockwise are merely for convenience and do not imply any specific fixed direction. In fact, they are used to reflect the relative position and / or orientation between different parts of an object. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Note that, in practice, "further," "preferably," "even further," and "more preferably" are simply starting points for describing another embodiment based on the foregoing embodiments. The combination of the content following "further," "preferably," "even further," or "more preferably" with the foregoing embodiments constitutes the complete configuration of another embodiment. Any combination of several "further," "preferably," "even further," or "more preferably" settings following the same embodiment can form yet another embodiment.

[0045] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the aspects described below with reference to the accompanying drawings and specific embodiments are merely exemplary and should not be construed as limiting the scope of protection of the present invention in any way.

[0046] Please refer to Figures 1-5 This invention provides a shear-resistant installation structure for a continuous composite floor slab and steel beam, comprising a steel beam 1, a precast composite base slab 2, and a shear-resistant connecting pipe 3. The precast composite base slab 2 is laid on the steel beam 1 and is a continuous structure at least at the location corresponding to the steel beam 1. A post-cast floor slab layer 4 is formed above the precast composite base slab 2. The shear-resistant connecting pipe 3 penetrates the precast composite base slab 2 and is located corresponding to the steel beam 1. After installation, the precast composite base slab 2 is welded to the upper flange 11 of the steel beam 1 through the internal space of the shear-resistant connecting pipe 3. The shear-resistant connecting pipe 3, the precast composite base slab 2, and the post-cast floor slab layer 4 engage to provide shear resistance between the steel beam and the floor slab.

[0047] The shear-resistant connecting pipe 3 serves as the connector between the precast composite base slab 2 and the steel beam 1. Specifically, the bottom end of the shear-resistant connecting pipe 3 is welded to the steel beam 1. In actual construction, the welding torch is inserted into the shear-resistant connecting pipe 3, and the inner wall of the bottom end of the shear-resistant connecting pipe 3 is welded to the steel beam 1. Alternatively, laser welding can be used to weld it in one step, that is, the bottom end of the inner wall of the shear-resistant connecting pipe 3 is welded to the steel beam 1. For further details, please refer to [link to relevant documentation]. Figure 4 and Figure 5 To better complete the welding, the bottom of the inner wall of the shear-resistant connecting pipe 3 extends towards each other to form a rolled edge 31, which is welded to the upper flange 11 of the steel beam 1.

[0048] Shear-resistant connecting pipe 3 serves as a shear key between the steel beam and the composite floor slab. Please refer to... Figure 1 , Figure 2 and Figure 3 The top of the shear-resistant connecting pipe 3 extends into the post-cast floor slab 4. After the post-cast floor slab is poured, it forms a bond with the shear-resistant connecting pipe 3, acting as a shear key. At the same time, the shear-resistant connecting pipe 3 also bonds with the precast composite base slab 2. The floor slab formed by the precast composite base slab 2 and the post-cast floor slab is ultimately not divided into upper and lower layers, and the whole forms a bond with the shear-resistant connecting pipe 3.

[0049] During the fabrication of the precast composite base slab 2, a shear-resistant connecting pipe 3 is installed at the location where shear keys are required, and the shear-resistant connecting pipe 3 is cast integrally with the precast composite base slab 2. Preferably, the shear-resistant connecting pipe 3 includes, but is not limited to, round steel pipes, square steel pipes, and triangular steel pipes.

[0050] Furthermore, a structural component is provided within the precast composite base slab 2, and the shear-resistant connecting pipe 3 is fixedly connected to this structural component. Specifically, this structural component is implemented as pre-embedded reinforcing bars in the precast composite base slab 2. Of course, it is not limited to the precast composite base slab 2 being an ordinary reinforced concrete slab, a high-performance concrete slab, or a fiber reinforced concrete slab. It is clear that when the precast composite base slab 2 contains a structural component, the shear-resistant connecting pipe 3 is fixedly connected to that structural component. This structural component can be the aforementioned pre-embedded reinforcing bars; or it can be a steel plate, steel bar, etc.

[0051] This invention also provides a shear-resistant installation method for continuously composite floor slabs and steel beams, comprising the following steps:

[0052] S1: The shear-resistant connecting pipe 3 and the precast composite base plate 2 are precast together, so that the shear-resistant connecting pipe 3 is installed through the precast composite base plate 2.

[0053] Specifically, during the fabrication of the precast composite base slab 2, a shear-resistant connecting pipe 3 is installed at the location where shear keys are required, and the shear-resistant connecting pipe 3 is cast integrally with the precast composite base slab 2. Preferably, the shear-resistant connecting pipe 3 includes, but is not limited to, round steel pipes, square steel pipes, and triangular steel pipes.

[0054] Furthermore, structural components are provided within the precast composite base slab 2. Specifically, these structural components are implemented as embedded reinforcing bars in the precast composite base slab 2. Of course, it is not limited to the precast composite base slab 2 being a conventional reinforced concrete slab, a high-performance concrete slab, or a fiber-reinforced concrete slab. It is clear that when structural components are present within the precast composite base slab 2, these components can be the aforementioned embedded reinforcing bars, or steel plates, steel bars, etc.

[0055] S2: Lay the precast composite base plate 2 on the steel beam 1, and align the position of the shear connection pipe 3 with the steel beam 1.

[0056] Specifically, the steel beam 1 is an H-beam, which includes an upper flange 11, a lower flange 13, and a web 12. In this embodiment, the number of shear connecting pipes 3 is not limited, and multiple pipes can be arranged along the width or length of the beam.

[0057] The bottom of the shear-resistant connecting pipe 3 is flush with the bottom of the precast composite base plate 2, so that the precast composite base plate 2 is laid on the steel beam 1 without any gap between them.

[0058] The shear-resistant connecting pipe 3 serves as a connector between the precast composite base slab 2 and the steel beam 1. Specifically, the bottom end of the shear-resistant connecting pipe 3 is welded to the steel beam 1. In actual construction, a welding rod is inserted into the shear-resistant connecting pipe 3, and the inner wall of the bottom end of the shear-resistant connecting pipe 3 is welded to the steel beam 1. That is, the bottom end of the inner wall of the shear-resistant connecting pipe 3 is welded to the steel beam 1. Furthermore, to better complete the welding, the bottom end of the inner wall of the shear-resistant connecting pipe 3 extends towards each other to form a rolled edge 31, which is welded to the upper flange 11 of the steel beam 1.

[0059] S3: Fix the shear-resistant connecting pipe 3 to the steel beam 1, and pour floor concrete on the post-cast floor slab layer 4 above the precast composite base slab 2, and cure it to form a continuous composite floor slab.

[0060] Specifically, the shear-resistant connecting pipe 3 serves two purposes: firstly, as a connector between the precast composite base slab 2 and the steel beam 1, and secondly, as a shear key for the composite floor slab. The top of the shear-resistant connecting pipe 3 extends into the post-cast floor slab layer 4, forming a bond with the shear-resistant connecting pipe 3 after the post-cast floor slab layer 4 is poured, thus acting as a shear key. In other words, the top of the shear-resistant connecting pipe 3 extends into the post-cast floor slab layer 4, forming a shear-resistant effect after the floor concrete is poured into the post-cast floor slab layer 4.

[0061] The beneficial effects of this invention are:

[0062] This invention incorporates a shear-resistant connecting pipe 3, which is integrally formed with the prefabricated composite base plate 2. This allows for full utilization of the material with pre-reserved stud holes in the composite plate. The shear-resistant connecting pipe 3 serves as both a template and a shear-resistant key connecting the composite plate to the steel beam 1, thereby improving material utilization, reducing processes, lowering production and construction difficulty, increasing efficiency, and reducing costs. At the same time, it reduces the weakening effect of traditional pre-reserved stud holes on the stiffness and load-bearing capacity of the composite plate.

[0063] The shear-resistant connecting pipe 3 is integrally formed with the precast composite base plate 2, which simplifies the production process and reduces the difficulty of production and construction; at the same time, it improves production efficiency and construction quality, reduces costs, and improves economic benefits.

[0064] The shear-resistant connecting pipe 3 reduces the weakening effect of the stud holes on the stiffness and load-bearing capacity of the composite slab, thus improving the safety of the structure.

[0065] Traditional composite slab production requires leaving stud holes, which is inconvenient. However, this invention uses a one-time shear-resistant connecting pipe 3 to replace the previous studs; and it is formed in one piece and prefabricated in the factory.

[0066] Furthermore, the present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A shear-resistant mounting structure of a continuous composite floor slab and a steel beam, characterized by, include: steel beams; A precast composite base slab is laid on the steel beam and is a continuous structure at least at the location corresponding to the steel beam. A post-cast floor slab is formed above the precast composite base slab. A shear-resistant connecting pipe is embedded in the precast composite base slab and positioned corresponding to the steel beam. After the precast composite base slab is installed, it is welded to the upper flange of the steel beam through the internal space of the shear-resistant connecting pipe. The shear-resistant connecting pipe engages with the precast composite base slab and the post-cast floor slab to provide shear resistance between the steel beam and the floor slab.

2. The shear-resistant mounting structure of a continuous composite floor slab and a steel beam according to claim 1, characterized in that: The bottom end of the shear-resistant connecting pipe is welded to the steel beam.

3. The shear-resistant installation structure of continuous composite floor slabs and steel beams as described in claim 2, characterized in that: The bottom end of the inner wall of the shear-resistant connecting pipe is welded to the steel beam.

4. The shear-resistant installation structure of continuous composite floor slabs and steel beams as described in claim 3, characterized in that: The inner bottom ends of the shear-resistant connecting pipes extend towards each other to form rolled edges; the rolled edges are welded to the upper flange of the steel beam.

5. The shear-resistant installation structure of continuous composite floor slabs and steel beams as described in claim 1, characterized in that: The top of the shear-resistant connecting pipe extends into the post-cast floor slab.

6. The shear-resistant installation structure of continuous composite floor slabs and steel beams as described in claim 1, characterized in that: The shear-resistant connecting pipe is integrally cast with the precast composite base plate.

7. The shear-resistant installation structure of continuous composite floor slabs and steel beams as described in claim 1, characterized in that: The shear-resistant connecting pipe includes, but is not limited to, round steel pipe, square steel pipe, and triangular steel pipe.

8. The shear installation method for the shear-resistant installation structure of continuous composite floor slabs and steel beams as described in claim 1, characterized in that, Includes the following steps: The shear-resistant connecting pipe is prefabricated integrally with the prefabricated composite base plate, so that the shear-resistant connecting pipe passes through the prefabricated composite base plate; The prefabricated composite base plate is laid on the steel beam, and the position of the shear-resistant connecting pipe is aligned with the steel beam; The shear-resistant connecting pipe is fixed to the steel beam, and floor concrete is poured on the post-cast floor slab above the precast composite base slab, and cured to form a continuous composite floor slab.

9. The shear-resistant installation method as described in claim 8, characterized in that: The bottom end of the inner wall of the shear-resistant connecting pipe is welded to the steel beam.

10. The shear-resistant installation method as described in claim 8, characterized in that: The top of the shear-resistant connecting pipe extends into the post-cast floor slab, forming a shear-resistant effect after the floor concrete is poured into the post-cast floor slab.

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