An installation structure and installation method suitable for prefabricated floor slabs in steel structure buildings

Abstract

The present invention discloses an installation structure and installation method for prefabricated floor slabs in steel structure buildings. It relates to the field of building technology. The present application specifically includes a steel beam frame, a plurality of prefabricated floor slabs, and at least two positioning devices that can be detachably installed on the steel beam frame; the steel beam frame includes a plurality of laying intervals, a plurality of prefabricated floor slabs are respectively laid on the top of the plurality of laying intervals, at least two positioning devices are installed on the top of a laying interval, and when a prefabricated floor slab is laid on the top of a laying interval, at least two positioning devices respectively position the adjacent two side edges of the prefabricated floor slab. The present invention positions the prefabricated floor slab by installing the positioning devices on the laying intervals in advance so that the adjacent two side edges of the prefabricated floor slabs abut against the two positioning devices, thereby ensuring the installation accuracy of the prefabricated floor slabs on the steel beam frame and making the laying of the prefabricated floor slabs in the steel structure building fast and convenient, greatly improving construction efficiency and reducing labor costs.

Description

Technical Field

[0001] The present invention relates to the field of building technology, and in particular to an installation structure and an installation method suitable for prefabricated floor slabs in steel structure buildings. Background Art

[0002] During the installation of prefabricated floor panels in prefabricated steel structure buildings, due to the limitations of the control accuracy of the lifting machinery, the prefabricated floor panels are usually hoisted to a position near the installation location and then manually pulled into place for installation, resulting in poor installation accuracy. If installation deviation occurs after placement, it is difficult to adjust the positioning accuracy of the floor panels by manpower alone. Usually, a crowbar is used to pry the floor panels to adjust the installation accuracy. This simple and crude adjustment method is not only time-consuming and labor-intensive, but also easily causes local damage or cracking of the prefabricated panels. Therefore, how to ensure the quality, safety, efficiency, and environmental protection of the installation of prefabricated floor panels is a technical problem that needs to be urgently solved by those skilled in the art.

[0003] Chinese patent CN211816893U, published on 2020-10-30, discloses a steel structure frame prefabricated house, including a foundation, a steel structure frame, steel structure beams, prefabricated wall panels and prefabricated floor slabs; a steel structure frame is installed on the foundation, steel structure beams, prefabricated wall panels and prefabricated floor slabs are fixed on the steel structure frame, a foundation connected to the steel structure frame is provided on the foundation, and a structural base connected to the foundation is provided on the steel structure frame, and the foundation and the structural base are fixed by bolts. The beneficial effects of this utility model are: high assembly efficiency and wide application in various house forms. However, when the prefabricated floor slabs in the prefabricated house structure are laid on the steel structure beams, they are generally installed by hoisting. This method is difficult to ensure installation accuracy. After the prefabricated floor slabs are in place, the installation position of the prefabricated floor slabs needs to be manually adjusted, which is time-consuming and labor-intensive, reduces construction efficiency, and increases labor costs. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies of the above-mentioned prior art and provide an installation structure and installation method suitable for prefabricated floor slabs in steel structure buildings, which can quickly and conveniently realize the laying of prefabricated floor slabs in steel structure buildings, improve construction efficiency and reduce labor costs.

[0005] The present invention proposes an installation structure suitable for prefabricated floor slabs in steel structure buildings, comprising a steel beam frame, a plurality of prefabricated floor slabs, and at least two positioning devices detachably mounted on the steel beam frame; the steel beam frame comprises a plurality of laying intervals, a plurality of the prefabricated floor slabs are respectively laid on the tops of the plurality of the laying intervals, at least two of the positioning devices are installed on the top of one of the laying intervals, and when one of the prefabricated floor slabs is laid on the top of one of the laying intervals, at least two of the positioning devices respectively position the adjacent two sides of the prefabricated floor slab.

[0006] Furthermore, the paving interval is a circle of four H-shaped steels, and two adjacent paving intervals are separated by an H-shaped steel. When two adjacent prefabricated floor slabs are laid on the two paving intervals respectively, the opposite ends are simultaneously overlapped on the wing plate of an H-shaped steel, and also include post-poured concrete poured between the opposite ends of the two adjacent prefabricated floor slabs and the top surface of the H-shaped steel.

[0007] Furthermore, the prefabricated floor slab includes a floor slab body and a plurality of protruding steel bars arranged circumferentially along the floor slab body. When the floor slab body is laid at the top of the laying interval, the positioning device is located between two adjacent protruding steel bars, and the protruding steel bars are cast in the post-poured concrete.

[0008] Furthermore, a plurality of studs are provided on the top of the H-shaped steel. When the positioning device is installed on the top of the H-shaped steel, it is located between two adjacent studs, and the studs are cast in the post-cast concrete.

[0009] Furthermore, the positioning device includes a shell with a cavity inside and an open bottom of the cavity, a magnetic component that moves up and down in the cavity, and a screw for driving the magnetic component to move up and down in the cavity. A first through hole that connects the cavity with the outside is provided at the top of the shell, and one end of the screw passes through the first through hole from the outside and then extends into the cavity to be fixedly connected to the magnetic component.

[0010] Furthermore, the shell includes two side baffles arranged in the cavity and located on both sides of the magnetic component respectively, and a top baffle arranged on the top of the cavity.

[0011] Furthermore, the positioning device also includes two length adjustment plates respectively provided at both ends of the shell for extending the length of the shell, and an adjustment member for adjusting the extension length of the length adjustment plate at one end of the shell.

[0012] Furthermore, two second through holes are respectively provided at both ends of the shell, and a plurality of third through holes are axially provided on the length adjustment plate. The adjusting member includes two nuts fixed on the inner walls at both ends of the cavity, and two connecting bolts, one end of which passes through the third through hole and the second through hole in sequence from the outside and is then threadedly connected to the two nuts respectively.

[0013] Furthermore, the magnetic assembly includes a permanent magnet located in the middle and square steels respectively fixed to both side ends of the permanent magnet.

[0014] A method for installing a prefabricated floor slab in a steel structure building comprises the following steps:

[0015] S1: Install two positioning devices on the top of a paving section respectively;

[0016] S2: Hoist the precast floor slab above the laying area and then slowly lower it;

[0017] S3: When the prefabricated floor slab falls to the height of the positioning device, the position of the prefabricated floor slab is adjusted, firstly one side of the prefabricated floor slab is abutted against one positioning device, and then the other adjacent side of the prefabricated floor slab is abutted against the other positioning device, thereby completing the positioning of the prefabricated floor slab;

[0018] S4: lowering the precast floor slab to the top of the laying section, completing the laying of one precast floor slab in one laying section;

[0019] S5: Repeat steps S1 to S4 until the precast floor slabs cover all the laying intervals on the steel beam frame, completing the laying of all precast floor slabs.

[0020] The present invention provides an installation structure and method for prefabricated floor slabs in steel structure buildings, which have the following advantages:

[0021] (1) This installation structure installs positioning devices in the laying section in advance, so that when the prefabricated floor slabs are laid in the laying section, the adjacent two sides of the prefabricated floor slabs abut against the two positioning devices, thereby positioning the prefabricated floor slabs. This can not only ensure the installation accuracy of the prefabricated floor slabs on the steel beam frame, but also make the laying of the prefabricated floor slabs in the steel structure building fast and convenient, greatly improving construction efficiency and reducing labor costs;

[0022] (2) Post-cast concrete is poured on the opposite ends of the two precast floor slabs of the installation structure and on the wing plates on the top of the H-shaped steel, and the two adjacent precast floor slabs and the H-shaped steel are fixedly connected so that the precast floor slabs and the steel beam frame form a whole, preventing the precast floor slabs from moving on the H-shaped steel, thereby enhancing the integrity and stability of the installation structure;

[0023] (3) When pouring post-cast concrete on the opposite ends of the two precast floor slabs and the wing plate on the top of the H-shaped steel, the protruding steel bars at the opposite ends of the two adjacent precast floor slabs and the steel bar connectors connecting the protruding steel bars 22 at the opposite ends of the two adjacent precast floor slabs 2 are poured together in the post-cast concrete 5, thereby strengthening the connection strength of the two adjacent precast floor slabs and further enhancing the integrity and stability of the installation structure;

[0024] (4) A magnetic component is provided in the positioning device of the installation structure. By engaging and separating the magnetic component with the top wing plate of the H-shaped steel, the positioning device can be installed and removed from the steel beam frame quickly and easily, thereby making the laying of prefabricated floor slabs in steel structure buildings quick and convenient, improving construction efficiency and reducing labor costs;

[0025] (5) This installation structure lengthens the shell length through the length adjustment plate, and makes the overall length of the shell adjustable through the adjustment piece, thereby ensuring the stability of the positioning device installed on the top wing plate of different H-shaped steels, so that this positioning device can be applied to different steel beam frames, thereby enhancing the scope of use and practicality of this installation structure;

[0026] (6) The magnetic components of this mounting structure include a permanent magnet and square steel. The square steel is wrapped on both sides of the permanent magnet to protect the permanent magnet and prevent it from colliding with the casing during use, causing the permanent magnet to break, affecting the service life of the positioning device and increasing the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In the drawings, like reference numerals are used to represent like elements.

[0028] Figure 1 A top view of a plurality of prefabricated floor slabs laid on a steel beam frame according to an installation structure and installation method of prefabricated floor slabs in a steel structure building according to an embodiment of the present invention;

[0029] Figure 2 This is a structural schematic diagram of a prefabricated floor slab being laid in a laying interval according to an installation structure and installation method for prefabricated floor slabs in a steel structure building according to an embodiment of the present invention;

[0030] Figure 3 A top view of the overlapped portion of two adjacent prefabricated floor slabs on the same H-shaped steel, according to an embodiment of the present invention, which is applicable to an installation structure and installation method of prefabricated floor slabs in a steel structure building;

[0031] Figure 4 This is a structural schematic diagram of a positioning device applicable to an installation structure and installation method of prefabricated floor slabs in a steel structure building according to an embodiment of the present invention;

[0032] Figure 5 A cross-sectional view of a positioning device for an installation structure and installation method of prefabricated floor slabs in a steel structure building according to an embodiment of the present invention;

[0033] Figure 6 The present invention is a structural schematic diagram of a magnetic component applicable to an installation structure and installation method of prefabricated floor slabs in steel structure buildings according to an embodiment of the present invention.

[0034] In the figure: 1. Steel beam frame; 2. Precast floor slab; 21. Floor slab body; 22. Extending steel bars; 3. Positioning device; 31. Outer shell; 311. Side baffle; 312. Top baffle; 32. Magnetic assembly; 321. Permanent magnet; 322. Square steel; 33. Screw; 34. Length adjustment plate; 35. Nut; 36. Connecting bolt; 4. Laying section; 41. H-shaped steel; 411. Stud; 5. Post-poured concrete. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] An embodiment of the present invention is a mounting structure for prefabricated floor slabs in steel structure buildings, comprising a steel beam frame 1, a plurality of prefabricated floor slabs 2, and at least two positioning devices 3 detachably mounted on the steel beam frame 1; the steel beam frame 1 comprises a plurality of laying intervals 4, a plurality of prefabricated floor slabs 2 are respectively laid on the top of the plurality of laying intervals 4, at least two positioning devices 3 are mounted on the top of a laying interval 4, and when a prefabricated floor slab 2 is laid on the top of a laying interval 4, at least two positioning devices 3 respectively position the adjacent two sides of the prefabricated floor slab 2, and the specific effect is shown in FIG. Figure 1 and Figure 2 .

[0037] In the present application, a plurality of laying intervals 4 are provided on the steel beam frame 1, and a precast floor slab 2 is laid on the top of each laying interval 4, thereby achieving the laying of all precast floor slabs 2 between floors. When laying a precast floor slab 2 on a laying interval 4, at least two positioning devices 3 are first installed on the laying interval 4, and then the precast floor slab 2 is hoisted to the top of the laying interval 4, and then the precast floor slab 2 is slowly dropped. When the precast floor slab 2 drops to the height of the positioning devices 3, the position of the precast floor slab 2 is adjusted, first so that one side of the precast floor slab 2 abuts against one positioning device 3, and then the other adjacent side of the precast floor slab 2 abuts against the other positioning device 3, completing the positioning of the precast floor slab 2, and finally dropping the precast floor slab 2 to the top of the laying interval 4, completing the laying of a precast floor slab 2 on a laying interval 4. Repeat the above steps until the precast floor slab 2 covers all the laying intervals 4 on the steel beam frame 1, completing the laying of all precast floor slabs 2 between floors.

[0038] During the installation of prefabricated floor panels 2 in existing prefabricated steel structure buildings, the prefabricated floor panels 2 are typically installed on the steel beam frame 1 by hoisting due to their heavy weight. However, due to the limitations of the hoisting machine's control accuracy, the installation accuracy of the prefabricated floor panels 2 on the steel beam frame 1 is poor, and manual adjustment of the positioning accuracy of the prefabricated floor panels 2 on the steel beam frame 1 is typically required. However, due to the heavy weight of the prefabricated floor panels 2, adjusting the position of the prefabricated floor panels 2 after they have landed on the prefabricated floor panels 2 consumes a significant amount of time and manpower.

[0039] In the present application, a positioning device 3 is installed on the laying interval 4 in advance to indicate the installation position of the prefabricated floor 2. When the hoisting machinery hoists the prefabricated floor 2 onto the laying interval 4, the position of the prefabricated floor 2 is adjusted according to the positioning device 3. At this time, the prefabricated floor 2 is still in a suspended state, and the weight is borne by the hoisting machinery. Therefore, only a small force is needed to adjust the position of the prefabricated floor 2. When the adjacent two side edges of the prefabricated floor 2 are in contact with the two positioning devices 3, the positioning of the prefabricated floor 2 is achieved. At this time, it is only necessary to drop the prefabricated floor 2 to the top of the laying interval 4 to complete the installation of the prefabricated floor 2. It can not only ensure the installation accuracy of the prefabricated floor 2 on the steel beam frame 1, but also make the laying of the prefabricated floor 2 in the steel structure building fast and convenient, greatly improving construction efficiency and reducing labor costs.

[0040] It can be foreseen that: in the present application, in order to achieve the precise installation of the prefabricated floor slab 2, it is necessary to design the installation dimensions of the positioning device 3 on the laying interval 4 according to the dimensions of the prefabricated floor slab 2, and ensure the installation accuracy of the positioning device 3 on the laying interval 4. A specific implementation method may be: the steel beam frame 1 is pre-installed with an ink line on the beam during the factory production stage or before installation, and the long side center line is drawn on the positioning device 3 with a paint that is not easy to fade. During installation, it is only necessary to align the long side center line of the positioning device 3 with the positioning center line on the steel beam frame 1 to ensure the installation accuracy of the positioning device 3 on the laying interval 4. Since in the present application, the installation of the positioning device 3 on the laying interval 4 is a detachable installation, after the installation of the prefabricated floor slab 2 in a laying interval 4 is completed, the positioning device 3 can be removed from the laying interval 4 for recycling, thereby saving production resources and reducing construction costs.

[0041] In this embodiment, the laying interval 4 is a circle of four H-shaped steels 41, and two adjacent laying intervals 4 are separated by an H-shaped steel 41. When two adjacent precast floor slabs 2 are laid on the two laying intervals 4, the opposite ends are simultaneously overlapped on the wing plates of an H-shaped steel 41, and the post-cast concrete 5 is poured between the opposite ends of the two adjacent precast floor slabs 2 and the top surface of the H-shaped steel 41. The specific effect is shown in FIG. Figure 1 、 Figure 2 and Figure 3 In the present application, each laying interval 4 is composed of four H-shaped steels 41 formed in a circle, and the H-shaped steel 41 is composed of flanges at both ends and a web connecting the two flanges. The four sides of the prefabricated floor 2 are respectively overlapped on the flanges at the top of the four H-shaped steels 41.

[0042] It can be foreseen that: the positioning devices 3 are at least two positioned on the top wing plates of two adjacent H-shaped steels 41, so that the two positioning devices 3 on one laying interval 4 are respectively in contact with the adjacent two side edges of the precast floor slab 2, and the position of the precast floor slab 2 on the four top wing plates of the H-shaped steels 41 is determined. Of course, in actual use, the positioning devices 3 can also be three positioned on the top wing plates of three adjacent H-shaped steels 41, so that when the precast floor slab 2 is laid, the three adjacent sides are respectively in contact with the three positioning devices 3, and the position of the precast floor slab 2 is determined; the positioning devices 3 can also be four positioned on the top wing plates of four H-shaped steels 41, so that when the precast floor slab is laid, the four sides are respectively in contact with the four positioning devices 3, and the position of the precast floor slab 2 is determined. The specific situation depends on the actual construction situation.

[0043] Two adjacent laying sections 4 are separated by the same H-beam 41. When two adjacent precast floor slabs 2 are laid on the adjacent laying sections 4, their opposite ends overlap the wing plates at the top of the same H-beam 41, spaced a certain distance apart. Therefore, after the precast floor slabs 2 in one laying section 4 are laid, the positioning devices 3 on the two adjacent H-beams 41 in that section 4 do not need to be removed. When the precast floor slabs 2 in the adjacent laying section 4 are laid, the positioning devices 3 on the same H-beam 41 shared with that section 4 can still be used to position the precast floor slabs 2 in the adjacent laying section 4, saving time and effort.

[0044] When the paving interval 6 is provided with both sides of the positioning device 3 and the precast floor slabs of the adjacent paving interval 6 are also laid, the positioning device 3 is removed from the paving interval 4, and then post-cast concrete 5 is poured on the opposite end of the two adjacent precast floor slabs 2 and the top wing plate of the shared H-shaped steel 41 to fix the two adjacent precast floor slabs 2 and the H-shaped steel 41 to form a whole, so that the precast floor slabs 2 and the steel beam frame 1 are prevented from moving on the H-shaped steel 41, thereby enhancing the integrity and stability of the installation structure.

[0045] In this embodiment, the prefabricated floor 2 includes a floor body 21 and a plurality of protruding steel bars 22 arranged along the circumference of the floor body 21. When the floor body 21 is laid on the top of the laying interval 4, the positioning device 3 is located between two adjacent protruding steel bars 22, and the protruding steel bars 22 are cast in the post-cast concrete 5. The specific effect is shown in FIG. Figure 1 、 Figure 2 and Figure 3 The precast floor slab 2 includes a floor slab body 21 and a plurality of projecting steel bars 22. When the precast floor slab 2 is laid on the laying interval 4, the four sides of the floor slab body 21 are respectively overlapped on the wing plates at the top of the four H-shaped steels 41. The plurality of projecting steel bars 22 extend outward from the four sides of the floor slab body 21. Therefore, the plurality of projecting steel bars 22 extend to the four H-shaped steels 41 respectively. Since the positioning device 3 is also provided on the wing plates at the top of the H-shaped steel 41, when designing the installation dimensions of the positioning device 3 on the H-shaped steel 41, it is necessary to design the positioning device 3 between two adjacent projecting steel bars 22, avoiding the position of the projecting steel bars 22, thereby preventing the positioning device 3 from obstructing the laying of the precast floor slab 2.

[0046] It is worth noting that, because the opposing ends of two adjacent precast floor slabs 2 are overlapped on the flange at the top of the same H-beam 41, to prevent the protruding steel bars 22 at the opposing ends of the two adjacent precast floor slabs 2 from interfering with each other, the protruding steel bars 22 at the opposing ends of the two adjacent precast floor slabs 2 are staggered on the flange at the top of the H-beam 41. Simultaneously, when the post-cast concrete 5 is poured on the opposing ends of the two precast floor slabs 2 and the flange at the top of the H-beam 41, the protruding steel bars 22 at the opposing ends of the two adjacent precast floor slabs 2 are also cast in the post-cast concrete 5, thereby strengthening the connection strength between the two adjacent precast floor slabs 2 and further enhancing the integrity and stability of the installed structure.

[0047] A steel bar connector is further provided between two adjacent precast floor slabs 2, through which the protruding steel bars 22 at opposite ends of the two adjacent precast floor slabs are connected. When the post-cast concrete 5 is poured on the opposite ends of the two precast floor slabs 2 and the wing plates on the top of the H-shaped steel 41, the protruding steel bars 22 at opposite ends of the two adjacent precast floor slabs 2 and the steel bar connector connecting the protruding steel bars 22 at opposite ends of the two adjacent precast floor slabs 2 are poured together in the post-cast concrete 5, thereby further enhancing the integrity and stability of the installation structure.

[0048] In this embodiment, a plurality of studs 411 are provided on the top of the H-shaped steel 41. When the positioning device 3 is installed on the top of the H-shaped steel 41, it is located between two adjacent studs 411. The studs 411 are cast in the post-cast concrete 5. The specific effect is shown in FIG. Figure 1 、 Figure 2 and Figure 3. A plurality of bolts 411 are provided on the wing plate at the top of the H-shaped steel 41. When the post-cast concrete 5 is poured on the opposite ends of the two precast floor slabs 2 and on the wing plate at the top of the H-shaped steel 41, the bolts 411 are poured into the post-cast concrete 5, thereby strengthening the connection between the two adjacent precast floor slabs 2 and the H-shaped steel 41, and further enhancing the integrity and stability of the installation structure. Since the positioning device 3 is provided on the wing plate at the top of the H-shaped steel 41, the protruding steel bars 22 of the two adjacent precast floor slabs 2 also extend to the wing plate at the top of the H-shaped steel 41. Therefore, the plurality of bolts 411 provided on the wing plate at the top of the H-shaped steel 41 must avoid the position where the positioning device 3 is located, and must be staggered with the protruding steel bars 22 of the two adjacent precast floor slabs 2, avoiding the position where the protruding steel bars 22 of the two adjacent precast floor slabs 2 are located, thereby preventing obstruction to the installation of the positioning device 3 and the precast floor slab 2 on the H-shaped steel 41.

[0049] In this embodiment, the positioning device 3 includes a shell 31 with a cavity inside and an opening at the bottom of the cavity, a magnetic component 32 that moves up and down in the cavity, and a screw 33 for driving the magnetic component 32 to move up and down in the cavity. The top of the shell 31 is provided with a first through hole that connects the cavity with the outside. One end of the screw 33 passes through the first through hole from the outside and then extends into the cavity to be fixedly connected to the magnetic component 32. The specific effect is shown in FIG. Figure 4 and Figure 5 The positioning device 3 includes a shell 31, a magnetic component 32 and a screw 33. A cavity is provided inside the shell 31, and the bottom of the cavity is open. A first through hole is provided on the top of the shell 31, and the first through hole connects the cavity with the outside. The magnetic component 32 is arranged in the cavity and can move up and down in the cavity. One end of the screw 33 passes through the first through hole from the outside and is fixedly connected to the magnetic component 32. The up and down movement of the screw 33 drives the magnetic component 32 to move up and down in the cavity.

[0050] When the positioning device 3 needs to be installed on the wing plate at the top of the H-beam 41, the shell 31 is first placed on the wing plate at the top of the H-beam 41, and then the screw 33 is moved downward to drive the magnetic component 32 to move downward in the cavity until the magnetic component 32 contacts the wing plate at the top of the H-beam 41 through the opening at the bottom of the cavity. The magnetic component 32 is attracted to the wing plate at the top of the H-beam 41, thereby installing the positioning device 3 on the wing plate at the top of the H-beam 41; when the positioning component needs to be removed from the wing plate at the top of the H-beam 41, the screw 33 is moved upward to drive the magnetic component 32 to move upward in the cavity, so that the magnetic component 32 is separated from the wing plate at the top of the H-beam 41, and the positioning device 3 can be removed from the wing plate at the top of the H-beam 41.

[0051] The reason why the positioning device 3 is set to this structure is that the present application is to lay prefabricated floor slabs 2 in steel structure buildings, and the steel structure will attract each other when it comes into contact with magnetic parts. A magnetic component 32 is set in the positioning device 3, and the installation and disassembly of the positioning device 3 on the steel beam frame 1 is realized through the attraction and separation of the magnetic component 32 and the top wing plate of the H-shaped steel 41, so that there is no need to use other mounting parts to install the positioning device 3 on the steel beam frame 1, that is, no extra steps are required to install and disassemble the positioning device 3, so that the installation and disassembly of the positioning device 3 on the steel beam frame 1 is convenient and quick, thereby making the laying of prefabricated floor slabs 2 in steel structure buildings fast and convenient, improving construction efficiency and reducing labor costs.

[0052] Since, in the present application, the positioning device 3 is fixed to the steel beam frame 1 by the attraction between the magnetic assembly 32 and the H-beam 41, and the positioning of the precast floor 2 is achieved by abutting the two adjacent sides with the two positioning devices 3, in order to prevent the positioning device 3 from being knocked off the steel beam frame 1 when the precast floor 2 abuts the positioning device 3, resulting in the inability to position the precast floor 2, the positioning device 3 needs to be fixed to the steel beam frame 1 more firmly. Therefore, it is foreseeable that the magnetic member in the magnetic assembly 32 of the present application adopts a high-strength permanent magnet 321, so that the attraction force between the magnetic assembly 32 and the H-beam 41 is greater, thereby making the positioning device 3 more firmly fixed to the steel beam frame 1. However, in this case, the operation of separating the magnetic assembly 32 from the H-beam 41 by moving the screw rod 33 upward will be more difficult, so it is necessary to use other tools to move the screw rod 33 upward, such as using a crowbar to pry the screw rod 33 up, thereby separating the magnetic assembly 32 from the H-beam 41 and completing the removal of the positioning device 3 from the steel beam frame 1.

[0053] In this embodiment, the housing 31 includes two side baffles 311 disposed in the cavity and located on both sides of the magnetic component 32, and a top baffle 312 disposed on the top of the cavity. Figure 5 . Side baffles 311 and a top baffle 312 are also provided in the cavity of the shell 31. The side baffles 311 are respectively located on both sides of the magnetic component 32 to limit the two sides of the magnetic component 32 to prevent the magnetic component 32 from shifting to the sides when moving up and down in the cavity, thereby affecting the installation of the positioning device 3 on the top wing of the H-shaped steel 41. The top baffle 312 is welded to the top of the cavity to limit the upward movement of the magnetic component in the cavity to prevent the magnetic component 32 from colliding with the top of the cavity when moving upward in the cavity driven by the screw 33, causing damage to the magnetic component 32, thereby affecting the service life of the positioning device 3.

[0054] In order to prevent the outer shell 31 from being placed on the wing plate at the top of the H-beam 41 and the outer shell 31 has not been installed to the specified position, the magnetic component 32 and the screw 33 will automatically move downward in the cavity of the outer shell 31 under the action of their own gravity, so that the magnetic component 32 is attracted to the top wing plate of the H-beam 41. At this time, if you want to adjust the position of the outer shell 31 on the H-beam 41, you need to separate the magnetic component 32 from the H-beam 41 first, which makes it difficult to install the positioning device 3 on the H-beam 41.

[0055] Therefore, it can be foreseen that: in addition to limiting the horizontal movement of the magnetic component 32 in the cavity, the top baffle 312 not only limits the range of up and down movement of the magnetic component 32 in the cavity at the top of the cavity, the side baffles 311 and the top baffle 312 are also made of materials that are attracted to the magnetic component 32, such as steel plates, so that the magnetic component 32 and the screw 33 are prevented from moving under the action of their own gravity through the suction force between the side baffles 311 and the top baffle 312 and the magnetic component 32. Only when the screw 33 is pressed down can the suction force between the side baffles 311 and the top baffle 312 and the magnetic component 32 be overcome, so that the magnetic component 32 moves downward under the action of human force. Of course, the suction force between the two side baffles 311 and the top baffle 312 and the magnetic component 32 is only used to balance the gravity of the magnetic component 32 and the screw 33 themselves. Therefore, the suction force between the two side baffles 311 and the top baffle 312 and the magnetic component 32 will not be too large to prevent difficulties in pressing down the screw 33.

[0056] In this embodiment, the positioning device 3 further includes two length adjustment plates 34 respectively provided at both ends of the housing 31 for extending the length of the housing 31, and an adjustment member for adjusting the extension length of the length adjustment plate 34 at one end of the housing 31. Figure 4 and Figure 5 The positioning device 3 also includes two length adjustment plates 34 and two adjustment members. The two length adjustment plates 34 are respectively provided at both ends of the housing 31 and extend outward in the longitudinal direction of the housing 31, thereby lengthening the length of the housing 31. The two adjustment members are used to adjust the extension lengths of the two length adjustment plates 34 at both ends of the housing 31. The two length adjustment plates 34 and the housing 31 are considered as a whole. When the two length adjustment plates 34 increase the extension lengths of the two length adjustment plates 34 at both ends of the housing 31, the overall length of the housing 31 is lengthened; when the two length adjustment plates 34 decrease the extension lengths of the two length adjustment plates 34 at both ends of the housing 31, the overall length of the housing 31 is shortened.

[0057] The reason why the length of the shell 31 is lengthened by the length adjustment plate 34 and the overall length of the shell 31 is adjustable by the adjustment part is that in actual construction, different steel beam frames 1 use different types of H-shaped steels 41, which leads to different widths of the top wing plates of the H-shaped steels 41. The reason why the overall length of the shell 31 is adjustable is to enable the shell 31 to be installed on the top wing plates of the H-shaped steels 41 as a whole, to adjust the contact area with the top wing plates of the H-shaped steels 41 according to the widths of the top wing plates of the H-shaped steels 41, thereby ensuring the stability of the positioning device 3 when installed on the top wing plates of different H-shaped steels 41, so that the positioning device 3 can be applied to different steel beam frames 1, thereby enhancing the scope of use and practicality of the installation structure.

[0058] In this embodiment, two second through-holes are provided at each end of the housing 31, and multiple third through-holes are axially provided on the length adjustment plate 34. The adjustment member comprises two nuts 35 fixed to the inner walls of the cavity at each end, and two connecting bolts 36, one end of which passes through a third through-hole and a second through-hole from the outside, and then screws into the two nuts 35. A second through-hole is provided at each end of the housing 31, connecting the cavity with the outside. Nuts 35 are provided on the inner wall of the housing 31 where the second through-holes connect to the cavity. Multiple third through-holes are axially provided on the length adjustment plate 34. When the connecting bolts 36 pass through one of the third through-holes and the second through-hole from the outside, and then screw into the nuts 35, the length adjustment plate 34 is secured to the housing 31. When the third through-holes through which the connecting bolts 36 pass are changed to those in a different axial position, the extension length of the length adjustment plate 34 at one end of the housing 31 changes, thereby changing the overall length of the housing 31. This allows the positioning device 3 to be adapted for different steel beam frames 1, enhancing the range of applications and practicality of the mounting structure.

[0059] In this embodiment, the magnetic assembly 32 includes a permanent magnet 321 located in the middle and square steels 322 fixed to both sides of the permanent magnet 321. Figure 6 . The magnetic component 32 includes a permanent magnet 321 and a square steel 322. The permanent magnet 321 is located in the middle, and the square steel 322 is fixed on both sides of the permanent magnet 321 to protect the permanent magnet 321. Since the permanent magnet 321 is hard and brittle and is very easy to break during use, in this application, the square steel 322 is wrapped on both sides of the permanent magnet 321 to protect the permanent magnet 321 and prevent it from colliding with the shell 31 during use, causing the permanent magnet 321 to break, affecting the service life of the positioning device 3, and increasing the construction cost. The square steel 322 on both sides of the permanent magnet 321 will be magnetized by the permanent magnet 321 and have magnetism at the same time, thereby making the magnetism of the magnetic component 32 stronger and the attraction with the H-shaped steel 41 greater, thereby making the installation of the positioning device 3 on the steel beam frame 1 more secure.

[0060] In actual use, multiple permanent magnets 321 and multiple square steels 322 can be arranged in an interlaced manner, so that multiple square steels 322 can be used to wrap multiple permanent magnets 321 respectively, thereby more effectively protecting the permanent magnets 321. When the overall size of the magnetic component 32 is fixed, the thickness of the square steel 322 located in the middle is the largest, and the thickness of the square steels 322 arranged on both sides gradually decreases, thereby ensuring the thickness of the multiple permanent magnets 321, and then ensuring that the magnetic performance of the magnetic component 32 is uniform and stable.

[0061] A method for installing a prefabricated floor slab in a steel structure building comprises the following steps:

[0062] S1: Use an ink marker to draw a positioning center line on the top of two adjacent H-shaped steels 41 in a paving section 4, and use a non-fading paint to draw the center line of the long side on the housing 31 of the two positioning devices 3;

[0063] S2: Press down the screws 33 on the two positioning devices 3 so that the magnetic components 32 of the two positioning devices 3 are respectively adsorbed on the tops of the two adjacent H-shaped steels 41, and the long side center lines on the housings 31 of the two positioning devices 3 are respectively aligned with the positioning center lines of the tops of the two adjacent H-shaped steels 41;

[0064] S3: Hoist the prefabricated floor slab 2 above the laying area 4 and then slowly lower it;

[0065] S4: When the prefabricated floor slab 2 falls to the height of the positioning device 3, the position of the prefabricated floor slab 2 is adjusted, firstly one side of the prefabricated floor slab 2 is abutted against one positioning device 3, and then the other adjacent side of the prefabricated floor slab 2 is abutted against the other positioning device 3, thereby completing the positioning of the prefabricated floor slab 2;

[0066] S5: lowering the prefabricated floor slab 2 to the top of the laying section 4, completing the laying of one prefabricated floor slab 2 on one laying section 4;

[0067] S6: Repeat steps S1 to S5 until the prefabricated floor slabs 2 cover all the laying intervals 4 on the steel beam frame 1;

[0068] S7: pouring post-cast concrete 5 between all adjacent precast floor slabs 2 to complete the laying of the precast floor slabs 2 of the entire floor.

[0069] The contents described above can be implemented individually or in combination in various ways, and these variations are all within the protection scope of the present invention.

[0070] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0071] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents; such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A mounting structure for prefabricated floor slabs in steel structure buildings, characterized by: The invention comprises a steel beam frame (1), a plurality of prefabricated floor slabs (2), and at least two positioning devices (3) detachably mounted on the steel beam frame (1); the steel beam frame (1) comprises a plurality of laying intervals (4), a plurality of prefabricated floor slabs (2) are respectively laid on the top of the plurality of laying intervals (4), at least two positioning devices (3) are mounted on the top of one of the laying intervals (4), and when one of the prefabricated floor slabs (2) is laid on the top of one of the laying intervals (4), at least two positioning devices (3) respectively position adjacent two sides of the prefabricated floor slab (2); The positioning device (3) comprises a housing (31) having a cavity therein and an opening at the bottom of the cavity, a magnetic component (32) that moves up and down in the cavity, and a screw (33) for driving the magnetic component (32) to move up and down in the cavity, a first through hole that connects the cavity with the outside is provided at the top of the housing (31), and one end of the screw (33) passes through the first through hole from the outside and then extends into the cavity to be fixedly connected to the magnetic component (32); The housing (31) comprises two side baffles (311) disposed in the cavity and respectively located on both sides of the magnetic component (32), and a top baffle (312) disposed on the top of the cavity, wherein the side baffles (311) and the top baffle (312) are made of a material that is attracted to the magnetic component (32); The positioning device (3) further comprises two length adjustment plates (34) respectively provided at both ends of the housing (31) for extending the length of the housing (31), and an adjustment member for adjusting the extension length of the length adjustment plate (34) at one end of the housing (31).

2. The installation structure for prefabricated floor slabs in steel structure buildings according to claim 1, characterized in that: The paving section (4) is a circle of four H-shaped steels (41), and two adjacent paving sections (4) are separated by one H-shaped steel (41). When two adjacent prefabricated floor slabs (2) are laid on the two paving sections (4), the opposite ends are simultaneously overlapped on the wing plate of one H-shaped steel (41), and also include post-cast concrete (5) poured between the opposite ends of the two adjacent prefabricated floor slabs (2) and the top surface of the H-shaped steel (41).

3. The installation structure for prefabricated floor slabs in steel structure buildings according to claim 2, characterized in that: The prefabricated floor slab (2) comprises a floor slab body (21) and a plurality of protruding steel bars (22) arranged along the circumference of the floor slab body (21); when the floor slab body (21) is laid on the top of the laying interval (4), the positioning device (3) is located between two adjacent protruding steel bars (22); and the protruding steel bars (22) are cast in the post-cast concrete (5).

4. The installation structure for prefabricated floor slabs in steel structure buildings according to claim 2, characterized in that: A plurality of studs (411) are provided on the top of the H-shaped steel (41); when the positioning device (3) is installed on the top of the H-shaped steel (41), it is located between two adjacent studs (411); and the studs (411) are cast in the post-cast concrete (5).

5. The installation structure for prefabricated floor slabs in steel structure buildings according to claim 1, characterized in that: Two second through holes are respectively provided at both ends of the housing (31), a plurality of third through holes are axially provided on the length adjustment plate (34), and the adjustment member comprises two nuts (35) fixed to the inner walls at both ends of the cavity, and two connecting bolts (36) one end of which passes through one of the third through holes and the second through hole in sequence from the outside and is screwed to the two nuts (35) respectively.

6. The installation structure for prefabricated floor slabs in steel structure buildings according to claim 1, characterized in that: The magnetic assembly (32) comprises a permanent magnet (321) located in the middle, and square steels (322) respectively fixed to both side ends of the permanent magnet (321).

7. The method for installing a prefabricated floor slab in a steel structure building according to claim 1, wherein: The following steps are involved: S1: Install two positioning devices (3) on the top of a paving section (4); S2: hoisting the prefabricated floor slab (2) above the laying area (4) and then slowly lowering it; S3: When the prefabricated floor slab (2) falls to the height where the positioning device (3) is located, the position of the prefabricated floor slab (2) is adjusted, firstly one side of the prefabricated floor slab (2) is brought into contact with one positioning device (3), and then the other adjacent side of the prefabricated floor slab (2) is brought into contact with the other positioning device (3), thereby completing the positioning of the prefabricated floor slab (2); S4: lowering the prefabricated floor slab (2) to the top of the laying section (4), completing the laying of one prefabricated floor slab (2) on one laying section (4); S5: Repeat steps S1 to S4 until the prefabricated floor slabs (2) cover all the laying intervals (4) on the steel beam frame (1), completing the laying of all the prefabricated floor slabs (2).

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