Prefabricated floor slab, detachable steel-concrete composite floor and construction method thereof

Abstract

The present invention discloses a prefabricated floor slab, a detachable steel-concrete composite floor slab and a construction method thereof, and relates to the field of construction engineering technology. The prefabricated floor slab comprises a plurality of prefabricated panels, a reinforcement member, a plurality of reinforcement members and a reinforcement structure. The prefabricated panels have a lap side and a shear side, the lap sides of two adjacent prefabricated panels are detachably connected, and the shear sides of two adjacent prefabricated panels are spaced apart. The reinforcement member is provided on the end face of the shear side of the prefabricated panel. The reinforcement member is passed through between two adjacent reinforcement members, and the plurality of reinforcement members are distributed in the vertical direction. The reinforcement structure is cast between two adjacent reinforcement members. The prefabricated floor slab can ensure its reliability in installation and use on the main structure, and can also ensure that it can be quickly and reliably removed from the main structure for reuse.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and in particular to a prefabricated floor slab, a detachable steel-concrete composite floor slab and a construction method thereof. Background Art

[0002] Currently, modular floor slabs are widely used in construction and bridge engineering due to their excellent load-bearing properties and cost-saving properties. Prefabricated modular floor slab systems typically use wet joints to form a permanent connection with the main structure. While some modular floor slabs in existing technology are removable, these systems typically use bolts to connect the concrete floor slab to the steel beams. When the floor structure is subjected to stress, the bolts often deform significantly, making subsequent disassembly difficult or even impossible.

[0003] Therefore, there is an urgent need for a prefabricated floor slab, a detachable steel-concrete composite floor slab and a construction method thereof to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a prefabricated floor slab, a detachable steel-concrete composite floor slab and a construction method thereof, which can ensure the reliability of its installation and use on the main structure, and can also ensure that it can be quickly and reliably removed from the main structure for reuse.

[0005] In order to achieve the above technical effects, the technical solutions of the present invention are as follows:

[0006] A prefabricated floor slab comprises: a plurality of prefabricated panels, each having a lap side and a shear side, the lap sides of two adjacent prefabricated panels being detachably connected, and the shear sides of two adjacent prefabricated panels being spaced apart; reinforcement members, each provided on an end face of the shear side of the prefabricated panel; a strengthening structure, cast between two adjacent reinforcement members; and an embedded component, wherein the embedded component is embedded in the strengthening structure.

[0007] Furthermore, the prefabricated floor slab further includes: an embedded sleeve, which is embedded in the reinforcement structure; a fastener, which is detachably inserted into the embedded sleeve and is used to fasten the reinforcement structure to the main structure.

[0008] Furthermore, the prefabricated floor slab further includes a filling structure, which is detachably arranged between the end surfaces of the shear side of two adjacent prefabricated panels and is located on the reinforcement structure.

[0009] Furthermore, a first step is provided on the shear side of the prefabricated panel, the top wall of the reinforcement structure is flush with the horizontal surface of the first step, and the filling structure is provided between the vertical surfaces of the first steps of two adjacent prefabricated panels.

[0010] Furthermore, a second step is provided on the overlapping side of the prefabricated panel, and the second step of one of the two adjacent prefabricated panels is provided on the top wall of the prefabricated panel, and the second step of the other one is provided on the bottom wall of the prefabricated panel, so that the second steps of the two adjacent prefabricated panels are overlapped and connected to each other.

[0011] Furthermore, the reinforcement comprises a corrugated web C-shaped steel, and an open end of one of the corrugated web C-shaped steel in two adjacent prefabricated plates is arranged toward the other corrugated web C-shaped steel.

[0012] A detachable steel-concrete composite floor comprises: a frame beam, the frame beam defining a plurality of installation units, the frame beam being provided with a plurality of spaced-apart secondary beams, each of the secondary beams corresponding to a plurality of the installation units distributed along a plurality of vertical directions; a plurality of the precast floor slabs described above, the shear sides of two adjacent precast floor slabs being provided on the secondary beams, the reinforcement structure of the precast floor slabs being provided on the secondary beams, and the precast floor slabs being further detachably connected to the frame beams.

[0013] Furthermore, the frame beam defines an internal plate band and a peripheral plate band wrapped around the outer periphery of the internal plate band, and the internal plate band and the peripheral plate band both include a plurality of the mounting units, and the distribution direction of the plurality of overlapping sides arranged in the internal plate band is parallel to the length direction of the secondary beam, and the distribution direction of the plurality of overlapping sides arranged in the peripheral plate band is perpendicular to the length direction of the secondary beam.

[0014] Furthermore, the prefabricated panel also has a fixed side, and a threaded sleeve is pre-embedded in the fixed side of the prefabricated panel. The prefabricated panel can be detachably connected to the frame beam through a connection structure that is threadedly connected to the threaded sleeve, and the fixed sides of two adjacent prefabricated panels are spaced apart on the frame beam.

[0015] A construction method for a detachable steel-concrete composite floor, based on the detachable steel-concrete composite floor described above, comprises the following steps: locating the position of embedded components on the precast panels of the precast floor of the detachable steel-concrete composite floor by means of three-dimensional laser scanning technology; processing reinforcement members and installing the embedded components in a mold of the precast panel; pouring concrete in the mold to form the precast panel, pouring a reinforcement structure between two adjacent reinforcement members, and numbering the precast panels that have been produced; accurately locating the installation position of the precast panel installed on the main structure according to the number of the precast panel at the construction site, and applying a tightening torque to the embedded components twice; loosening the embedded components, removing all the precast floor panels from the main structure, and loading them onto trucks in order according to the number of the precast panels for transportation.

[0016] The beneficial effects of the present invention are as follows: according to the prefabricated floor slab of the present invention, the shear side of the prefabricated floor slab is provided with reinforcements, reinforcement structures and embedded components, thereby ensuring that multiple prefabricated panels can be reliably installed on the main structure after being connected, and ensuring that the prefabricated floor slab can be smoothly and reliably removed from the main structure. At the same time, the overlapping sides of the prefabricated panels can also achieve a relatively reliable detachable connection, further facilitating the detachable and cyclic use of the prefabricated floor slab, thereby ensuring that the prefabricated floor slab can be used stably and reliably on the main structure and also has convenient disassembly capabilities.

[0017] The removable steel-concrete composite floor according to the present invention, due to the aforementioned precast floor slabs, the reinforcing structure and embedded components between the shear sides of the precast floor slabs enable the precast floor slabs to be stably and reliably connected to the secondary beams. Furthermore, the precast floor slabs are also removably connected to the frame beams, thereby enabling the precast floor slabs to be stably and reliably installed on the frame beams and secondary beams after being installed on the installation units. When the precast floor slabs need to be removed from the frame beams and secondary beams, the embedded components can be easily and reliably removed from the main structure, enabling the precast floor slabs to be conveniently removed from the secondary beams. Furthermore, the precast floor slabs can be quickly removed from the frame beams, thereby effectively ensuring the stable and reliable performance of the removable steel-concrete composite floor slabs and improving the ease of dismantling and turnover of the removable steel-concrete composite floor slabs.

[0018] The construction method of the detachable steel-concrete composite floor according to the present invention can ensure the reliability of the installation and use of the prefabricated floor slabs on the main structure, and can also ensure that they can be quickly and reliably removed from the main structure for reuse.

[0019] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a structural schematic diagram of a prefabricated floor slab provided by a specific embodiment of the present invention;

[0021] Figure 2 yes Figure 1 Schematic diagram of the local enlarged structure at A in the middle;

[0022] Figure 3 yes Figure 1 Schematic diagram of the local enlarged structure at B in the middle;

[0023] Figure 4 It is a structural schematic diagram of the overlapping sides of two prefabricated panels provided by a specific embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of a prefabricated floor slab when it is installed on a secondary beam, provided by a specific embodiment of the present invention;

[0025] Figure 6 is a structural schematic diagram of a reinforcement member provided in a specific embodiment of the present invention;

[0026] Figure 7 This is a structural diagram of a prefabricated plate, a threaded sleeve, and a connection structure on a frame beam provided by a specific embodiment of the present invention;

[0027] Figure 8 This is a structural diagram of a detachable steel-concrete composite floor provided by a specific embodiment of the present invention;

[0028] Figure 9 It is a structural schematic diagram of the installation unit of the peripheral plate strip and the prefabricated floor slab provided by a specific embodiment of the present invention;

[0029] Figure 10 It is a structural schematic diagram of an internal plate strip installation unit and a prefabricated floor slab provided by a specific embodiment of the present invention;

[0030] Figure 11 It is a flow chart of a construction method of a detachable steel-concrete composite floor provided by a specific embodiment of the present invention.

[0031] Reference numerals

[0032] 1. Precast panel; 11. Overlap side; 12. Shear side; 13. Fixed side; 14. First step; 15. Second step; 2. Reinforcement; 21. Makeway; 3. Reinforcement; 4. Strengthening structure; 51. Embedded sleeve; 52. Fastener; 6. Filling structure; 7. Buffer and sound insulation; 81. Threaded sleeve; 82. Connection structure; 91. Frame beam; 92. Installation unit; 93. Secondary beam; 94. Peripheral plate strip; 95. Internal plate strip. DETAILED DESCRIPTION

[0033] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific implementation methods.

[0034] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0035] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0036] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0037] Reference below Figures 1-10 The specific structure of the prefabricated floor slab according to the embodiment of the present invention is described.

[0038] like Figures 1-10 As shown, Figure 1Disclosed is a prefabricated floor slab comprising multiple prefabricated panels 1, reinforcement members 2, a reinforcing structure 4, and embedded components. The prefabricated panels 1 have overlapping sides 11 and shear sides 12. The overlapping sides 11 of two adjacent prefabricated panels 1 are detachably connected, while the shear sides 12 of two adjacent prefabricated panels 1 are spaced apart. The reinforcement members 2 are positioned at the end faces of the shear sides 12 of the prefabricated panels 1. The reinforcing structure 4 is cast between two adjacent reinforcement members 2. The embedded components are embedded in the reinforcing structure 4.

[0039] It can be understood that since the prefabricated panels 1 have overlapping sides 11, multiple prefabricated panels 1 can maintain a reliable connection after overlapping, ensuring their work safety, and can also be easily disassembled, so that the prefabricated floor panels can be subsequently recycled and reused after dismantling.

[0040] At the same time, the prefabricated panel 1 also has a shear side 12, and the end face of the shear side 12 is provided with a reinforcement 2. The reinforcement 2 has a reliable friction pressure-bearing function, which can facilitate the casting of a reinforcement structure 4 between the shear sides 12 of two adjacent prefabricated panels 1. The reinforcement structure 4 has high strength and high shear stiffness, so that it can cooperate with the reinforcement 2 to achieve a firm connection between the two adjacent prefabricated panels 1 and improve the strength and stiffness of multiple prefabricated panels 1 after connection.

[0041] Furthermore, since embedded components are also pre-embedded in the reinforcing structure 4, multiple prefabricated panels 1 can be detachably connected to the main structure through the embedded components after being connected in sequence, and the reinforcing structure 4 has strong shear stiffness and strength, which can ensure the firmness of the embedded components connecting the main structure and the reinforcing structure 4 when fixing the prefabricated panels 1 on the main structure, and can keep the embedded components in their original state after applying the tightening torque, thereby ensuring the installation reliability of the prefabricated floor slabs on the main structure, and can also prevent the problem of excessive slippage between the embedded components and the reinforcing structure 4 and the main structure when the embedded components are removed from the main structure, resulting in the prefabricated floor slabs being unable to be removed, thereby ensuring that the prefabricated floor slabs can be successfully dismantled.

[0042] According to the prefabricated floor slab of this embodiment, the shear side 12 of the prefabricated floor slab 1 is provided with a reinforcement 2, a reinforcement structure and an embedded component, thereby ensuring that multiple prefabricated floors 1 can be reliably installed on the main structure after being connected, and ensuring that the prefabricated floor slab can be smoothly and reliably removed from the main structure. At the same time, the overlapping side 11 of the prefabricated floor slab 1 can also achieve a relatively reliable detachable connection, further facilitating the detachable and cyclic use of the prefabricated floor slab, thereby ensuring that the prefabricated floor slab can be used stably and reliably on the main structure and also has convenient dismantling capabilities.

[0043] In some specific embodiments, Figure 5 As shown, the prefabricated floor slab further includes a plurality of reinforcing members 3 , which are passed between two adjacent reinforcing members 2 , and the plurality of reinforcing members 3 are distributed in the vertical direction.

[0044] It can be understood that the reinforcement 3 can further improve the strength and shear resistance of the reinforcement structure 4, and can also serve as a pin connecting the prefabricated panel 1 and the reinforcement structure, thereby further improving the firmness of the connection between the two adjacent prefabricated panels 1 through the reinforcement 2 and the reinforcement structure 4.

[0045] In some specific embodiments, the reinforcement structure 4 includes ultra-high performance concrete.

[0046] It is understood that ultra-high performance concrete has reliable high shear stiffness and strength, ensuring that embedded components are not susceptible to significant slippage between the reinforcement structure 4 and the main structure during assembly and disassembly, thus ensuring smooth removal of the prefabricated floor slabs from the main structure. Of course, in other embodiments of the present invention, other reinforcement structures 4 with high shear stiffness and strength may also be used. The specific material of the reinforcement structure 4 can be determined based on actual needs and does not need to be specifically limited.

[0047] In some embodiments, as Figure 5 As shown, the embedded assembly includes an embedded sleeve 51 and a fastener 52. The embedded sleeve 51 is embedded in the reinforcement structure 4. The fastener 52 is detachably inserted into the embedded sleeve 51 and is used to fasten the reinforcement structure 4 to the main structure.

[0048] It will be appreciated that the embedded sleeve 51 is pre-embedded in the reinforcement structure 4, thereby effectively ensuring that the prefabricated floor slabs do not need to be installed on the main structure without additional connection holes in the reinforcement structure 4, and effectively ensuring the shear rigidity and strength of the reinforcement structure 4. The fastener 52 is detachably disposed in the embedded sleeve 51, and can be connected to the embedded sleeve 51 by passing the fastener 52 through the main structure, thereby connecting the reinforcement structure 4 and the main structure.

[0049] Specifically, in this embodiment, fasteners 52 comprise friction-type high-strength bolts. By applying a tightening torque to the friction-type high-strength bolts, the reinforcement structure 4 and the main structure can be securely connected via the friction-type high-strength bolts. Of course, in other embodiments of the present invention, other fastening structures capable of applying a tightening torque can also be employed. The specific material type can be determined based on actual needs and is not subject to specific limitations.

[0050] In some embodiments, as Figure 5 As shown, the prefabricated floor further includes a filling structure 6 , which is detachably arranged between the end surfaces of the shear sides 12 of two adjacent prefabricated panels 1 and located on the reinforcement structure 4 .

[0051] It is understandable that the filling structure 6 can be used to embed pre-embedded components so that the pre-embedded components do not protrude from the top wall of the prefabricated board 1, thereby better ensuring the aesthetics of the prefabricated floor. When the prefabricated floor is removed, the filling structure 6 can be removed.

[0052] Specifically, in this embodiment, the filling structure 6 is made of silicone-modified thermoplastic polyurethane, which offers advantages such as high-temperature resistance, wear resistance, water resistance, and excellent adhesion. This ensures the usability of the prefabricated floor slabs and prevents the filling structure 6 from falling out from between the two prefabricated slabs 1. Furthermore, its flexibility allows the prefabricated floor slabs to provide a protective cushioning effect for the reinforcing structure 4 during transportation or use. Of course, in other embodiments of the present invention, the filling structure 6 can also be made of other materials, without specific limitation.

[0053] In some embodiments, as Figure 2 and Figure 5 As shown, the shear side 12 of the precast panel 1 is provided with a first step 14 , the top wall of the reinforcement structure 4 is flush with the horizontal surface of the first step 14 , and the filling structure 6 is provided between the vertical surfaces of the first steps 14 of two adjacent precast panels 1 .

[0054] It can be understood that by setting the first step 14, it is convenient to preset the installation space of the filling structure 6, and it is also possible to ensure that the end of the embedded component is set between the horizontal plane of the first step 14 and the top wall of the prefabricated panel 1, thereby ensuring that the end of the embedded component does not protrude from the prefabricated panel 1, which is convenient for the filling installation of the filling structure 6 and can also ensure that the embedded component is reliably hidden.

[0055] In some embodiments, as Figure 3 and Figure 4 As shown, the overlapping side 11 of the prefabricated panel 1 is provided with a second step 15, and the second step 15 of one of the two adjacent prefabricated panels 1 is provided on the top wall of the prefabricated panel 1, and the second step 15 of the other is provided on the bottom wall of the prefabricated panel 1, so that the second steps 15 of the two adjacent prefabricated panels 1 are overlapped and connected with each other.

[0056] It can be understood that the tongue-and-groove connection of the overlapping sides 11 of the two prefabricated panels 1 can be achieved by setting the second step 15. Since the flat connection cannot ensure the reliable transmission of the horizontal force inside the prefabricated floor slab, there are safety hazards in the structure of the prefabricated floor slab. The tongue-and-groove connection structure can play a role of bite friction between the two prefabricated panels 1, which is convenient for transmitting the horizontal load inside the floor slab, thereby ensuring the structural integrity of the prefabricated floor slab, and can also be more convenient in the subsequent disassembly and replacement process.

[0057] In some specific embodiments, Figure 4As shown, a plurality of second steps 15 are provided on the overlapping side 11 of each prefabricated panel 1 so as to form a tooth-shaped connection seam when the overlapping sides 11 of two adjacent prefabricated panels 1 are overlapped.

[0058] It can be understood that by providing multiple second steps 15, it is possible to further facilitate the reliable transmission of vertical and horizontal loads between two adjacent prefabricated panels 1 through the multiple tongue-and-groove connection structures 82 formed by the multiple second steps 15, thereby ensuring the safety of the prefabricated floor slabs.

[0059] In some specific embodiments, high-strength cement mortar or ultra-high performance concrete is poured into the joint formed when the overlapping sides 11 of the two prefabricated panels 1 are overlapped.

[0060] It is understood that pouring high-strength cement mortar or ultra-high performance concrete at the joints can further enhance the integrity of the floor slab and improve the safety of the precast floor slab. Specifically, when precast floor slabs are used in long-span structures, additional high-strength cement mortar or ultra-high performance concrete can be poured at the joints. Therefore, the above structure can be selected based on actual construction conditions and does not need to be specifically limited.

[0061] In some embodiments, the second steps 15 of two adjacent prefabricated panels 1 are hingedly connected to each other, which can further improve the connection rigidity of the overlapping sides 11 of the two adjacent prefabricated panels 1 and improve the safety of the prefabricated floor.

[0062] In some embodiments, as Figure 4 As shown, the prefabricated floor further includes a buffering and sound insulating member 7 , which is arranged on the second step 15 .

[0063] It is understood that the sound-absorbing and sound-isolating member 7 has good elasticity and can achieve sound insulation and vibration reduction effects, thereby further improving the reliability of the connection between the two prefabricated panels 1 via the overlapping side 11. Specifically, in this embodiment, the sound-absorbing and sound-isolating member 7 includes a thermosetting composite rubber sound insulation pad, which can achieve a reliable connection effect. In other embodiments of the present invention, the sound-absorbing and sound-isolating member 7 can also be made of other materials without specific limitation.

[0064] In some embodiments, as Figure 2 、 Figure 5 and Figure 6 As shown, the reinforcement 2 comprises a corrugated web C-shaped steel, and the open end of one corrugated web C-shaped steel in two adjacent precast panels 1 is arranged toward the other corrugated web C-shaped steel.

[0065] It can be understood that the cross-section of the corrugated web C-shaped steel is set to C-shaped, which can facilitate the embedded components to pass through the corrugated web C-shaped steel and reliably fix the reinforcement structure 4 on the main structure, and also facilitate the casting of the reinforcement structure 4 between two adjacent corrugated web C-shaped steels.

[0066] Specifically, in this embodiment, a clearance opening 21 is further provided on the corrugated web C-shaped steel, which is used to pass the reinforcement member 3 .

[0067] Specifically, in this embodiment, the corrugated web C-shaped steel is a corrugated plate, which can further improve the friction bearing effect of the corrugated web C-shaped steel, thereby further improving the shear stiffness and strength of the shear structure formed by the reinforcement member 2 and the reinforcement structure 4.

[0068] like Figures 8-10 As shown, the present invention also discloses a removable steel-concrete composite floor, comprising a frame beam 91 and a plurality of the aforementioned precast floor slabs. The frame beam 91 defines a plurality of mounting units 92, and is provided with a plurality of spaced-apart secondary beams 93. Each secondary beam 93 corresponds to a plurality of mounting units 92 distributed along a vertical direction. The shear sides 12 of two adjacent precast floor slabs 1 are provided on the secondary beams 93. The embedded components of the precast floor slabs are removably mounted on the secondary beams 93. The precast floor slabs are also removably connected to the frame beams 91.

[0069] According to the detachable steel-concrete composite floor according to the embodiment of the present invention, due to the aforementioned precast floor slabs, the reinforcing structure 4 and the embedded components between the shear sides 12 of the precast floor slabs enable the precast floor slabs to be stably and reliably connected to the secondary beams 93. At the same time, the precast floor slabs are also detachably connected to the frame beams 91, thereby ensuring that after the precast floor slabs are installed on the installation units 92, they can be stably and reliably installed on the frame beams 91 and the secondary beams 93. When the precast floor slabs need to be removed from the frame beams 91 and the secondary beams 93, the embedded components can be easily and reliably removed from the main structure, thereby enabling the precast floor slabs to be conveniently removed from the secondary beams 93. The precast floor slabs can also be quickly removed from the frame beams 91, thereby effectively ensuring the stable and reliable performance of the detachable steel-concrete composite floor slabs and improving the convenience of the dismantling and turnover of the detachable steel-concrete composite floor slabs.

[0070] In some embodiments, as Figures 8-10 As shown, the frame beam 91 defines an internal plate band 95 and a peripheral plate band 94 wrapped around the outer periphery of the internal plate band 95. The internal plate band 95 and the peripheral plate band 94 both include multiple mounting units 92. The distribution direction of the multiple overlapping sides 11 arranged in the internal plate band 95 is parallel to the length direction of the secondary beam 93, and the distribution direction of the multiple overlapping sides 11 arranged in the peripheral plate band 94 is perpendicular to the length direction of the secondary beam 93.

[0071] It can be understood that the above-mentioned structural setting can better prevent the problem of through-seam damage after multiple prefabricated floor slabs are installed on the frame beam 91 and the secondary beam 93, thereby ensuring the safety and reliability of the detachable modular floor when in use.

[0072] In some embodiments, as Figure 7 As shown, the prefabricated panel 1 also has a fixed side 13, and a threaded sleeve 81 is pre-embedded in the fixed side 13 of the prefabricated panel 1. The prefabricated panel 1 can be detachably connected to the frame beam 91 through a connecting structure 82 that is threadedly connected to the threaded sleeve 81, and the fixed sides 13 of two adjacent prefabricated panels 1 are spaced apart on the frame beam 91.

[0073] It can be understood that by pre-embedding the threaded sleeve 81 on the fixed side 13 of the prefabricated panel 1, the fixed side 13 of the prefabricated panel 1 can be threadedly connected to the connection structure 82 of the threaded sleeve 81 to achieve a detachable connection of the prefabricated panel 1 on the frame beam 91.

[0074] Specifically, in this embodiment, the prefabricated floor slab includes at least four prefabricated slabs 1 on an installation unit 92, and can be divided into two mid-span slabs and two side span slabs. The shear sides 12 of the two mid-span slabs are interconnected and arranged on the secondary beam 93. The lap sides 11 of the two mid-span slabs are detachably connected to the lap sides 11 of the two side span slabs, and the fixed sides 13 of the two side span slabs are detachably connected to the frame beam 91.

[0075] In some embodiments, the shear sides 12 of two adjacent prefabricated panels 1 are further provided on the frame beam 91 , and the prefabricated floor slabs and the frame beam 91 are further detachably connected via embedded components.

[0076] It is understandable that according to actual construction needs, for example, during the structural construction of large-span frame beams 91 and secondary beams 93, it is necessary to further ensure the installation firmness of the prefabricated floor slabs on the frame beams 91 and secondary beams 93, so that the prefabricated floor slabs and the frame beams 91 can also be detachably connected through embedded components, thereby ensuring the installation reliability and safety of the detachable steel-concrete composite floor slab, and significantly reducing the difficulty of its dismantling, making it easier for turnover and use.

[0077] Example:

[0078] Reference below Figures 1-10 A detachable steel-concrete composite floor according to a specific embodiment of the present invention is described.

[0079] The prefabricated floor slab of this embodiment includes a frame beam 91 and a plurality of the prefabricated floor slabs described above.

[0080] The frame beam 91 defines a plurality of installation units 92 . A plurality of spaced-apart secondary beams 93 are provided on the frame beam 91 . Each secondary beam 93 corresponds to a plurality of installation units 92 distributed along a vertical direction.

[0081] The shear sides 12 of two adjacent precast panels 1 of the precast floor are arranged on the secondary beam 93 , the embedded components of the precast floor are detachably arranged on the secondary beam 93 , and the precast floor is also detachably connected to the frame beam 91 .

[0082] The prefabricated floor slab includes a plurality of prefabricated panels 1, reinforcement members 2, a strengthening structure 4, a plurality of reinforcing members 3, embedded components, a filling structure 6, and a buffer and sound insulation member 7.

[0083] The precast panel 1 has an overlapping side 11 and a shear side 12. The overlapping sides 11 of two adjacent precast panels 1 are detachably connected, and the shear sides 12 of two adjacent precast panels 1 are spaced apart. The overlapping side 11 of the precast panel 1 is provided with a second step 15, and the second step 15 of one of the two adjacent precast panels 1 is provided on the top wall of the precast panel 1, while the second step 15 of the other is provided on the bottom wall of the precast panel 1, so that the second steps 15 of the two adjacent precast panels 1 are overlapped and connected to each other. Each precast panel 1 has a plurality of second steps 15 spaced apart on the overlapping side 11, so that a tooth-shaped connection seam is formed when the overlapping sides 11 of the two adjacent precast panels 1 are overlapped. The second steps 15 of the two adjacent precast panels 1 are hingedly connected to each other. The buffer sound insulation member 7 is provided on the second step 15.

[0084] Reinforcement members 2 are located on the end faces of the shear side 12 of the precast panels 1. A reinforcement structure 4 is cast between two adjacent reinforcement members 2. Reinforcement members 2 comprise corrugated web C-section steel with a C-shaped cross section. In two adjacent precast panels 1, the open end of one C-section is positioned toward the other.

[0085] The embedded component is embedded in the reinforcement structure 4 and can be removably connected to the main structure. The embedded component includes an embedded sleeve 51 and a fastener 52. The embedded sleeve 51 is embedded in the reinforcement structure 4. The fastener 52 is removably inserted into the embedded sleeve 51 and is used to fasten the reinforcement structure 4 to the main structure. The shear side 12 of the precast panel 1 is provided with a first step 14. The top wall of the reinforcement structure 4 is flush with the horizontal surface of the first step 14. The filling structure 6 is located between the vertical surfaces of the first steps 14 of two adjacent precast panels 1.

[0086] The reinforcement member 3 is passed between two adjacent reinforcement members 2 , and a plurality of reinforcement members 3 are distributed along the vertical direction.

[0087] The filling structure 6 is detachably disposed between the end surfaces of the shear sides 12 of two adjacent prefabricated panels 1 and is located on the reinforcement structure 4 .

[0088] The prefabricated panel 1 also has a fixed side 13, and a threaded sleeve 81 is pre-embedded in the fixed side 13 of the prefabricated panel 1. The prefabricated panel 1 can be detachably connected to the frame beam 91 through a connecting structure 82 that is threadedly connected to the threaded sleeve 81, and the fixed sides 13 of two adjacent prefabricated panels 1 are spaced apart on the frame beam 91.

[0089] The frame beam 91 defines an internal plate band 95 and a peripheral plate band 94 wrapped around the outer periphery of the internal plate band 95. The internal plate band 95 and the peripheral plate band 94 both include multiple mounting units 92. The distribution direction of the multiple overlapping sides 11 arranged in the internal plate band 95 is parallel to the length direction of the secondary beam 93, and the distribution direction of the multiple overlapping sides 11 arranged in the peripheral plate band 94 is perpendicular to the length direction of the secondary beam 93.

[0090] like Figure 11 As shown, the present invention also discloses a construction method of a detachable steel-concrete composite floor, which includes the following steps:

[0091] S1. Use 3D laser scanning technology to accurately locate the construction positions of the embedded sleeve 51 and threaded sleeve 81 and other embedded structures on the prefabricated panel 1, and complete the processing of the first step 14 and the second step 15 on the prefabricated panel 1 using a mold;

[0092] S2, processing the reinforcement member 2, and opening a clearance opening 21 on the reinforcement member 2, installing embedded structures such as the embedded sleeve 51 and the threaded sleeve 81 and multiple reinforcement members 3 in the mold.

[0093] S3. Concrete is poured into the mold to form a precast panel 1, and a reinforcement structure 4 is poured between two adjacent reinforcement members 2. After curing, a buffer and sound insulation member 7 is pasted on the second step 15, and the precast panels 1 are numbered.

[0094] S4. At the construction site, accurately locate the installation position of the precast panels 1 on the secondary beams 93 according to their serial numbers. Tighten the fasteners 52 through the embedded sleeves 51 and the secondary beams 93, applying the tightening torque twice. After the final tightening is completed, fill the gaps between the adjacent first steps 14 with the filling structure 6.

[0095] S5. Position the prefabricated panel 1 at the frame beam 91 and install the connecting structure 82 in the threaded sleeve 81. Here, the connecting structure 82 is a single-sided high-strength concealed bolt. After the final tightening is completed, the gap between the threaded sleeve 81 and the connecting structure 82 is filled with the filling structure 6 to complete the installation of the prefabricated floor slab on the secondary beam 93 and the frame beam 91.

[0096] S6. Remove the prefabricated floor slabs on the secondary beam 93 and the frame beam 91, chisel out the connection seam at the second step 15, loosen the connection structure 82 at the frame beam 91 to remove the prefabricated panel 1 on the frame beam 91; melt the filling structure 6 above the secondary beam 93, loosen the fasteners 52 to remove the prefabricated floor slabs on the secondary beam 93; load the prefabricated panels 1 in sequence according to their numbers.

[0097] Throughout this specification, references to "some embodiments," "other embodiments," and the like indicate that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0098] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A prefabricated floor slab, characterized in that: include: A plurality of prefabricated panels (1), each of the prefabricated panels (1) having an overlap side (11) and a shear side (12), wherein the overlap sides (11) of two adjacent prefabricated panels (1) are detachably connected, and the shear sides (12) of two adjacent prefabricated panels (1) are spaced apart. A reinforcement member (2), the reinforcement member (2) being provided on the end surface of the shear side (12) of the prefabricated panel (1); A reinforcement structure (4), wherein the reinforcement structure (4) is cast between two adjacent reinforcement members (2); An embedded component is embedded in the reinforcing structure (4), and the embedded component includes an embedded sleeve (51) and a fastener (52). The embedded sleeve (51) is embedded in the reinforcing structure (4), and the fastener (52) is provided on the secondary beam (93) of the main structure and is detachably inserted into the embedded sleeve (51). In this way, the strength, stability and detachability of the prefabricated floor slab including the reinforcing structure (4) and the detachable steel-concrete composite floor structure in which it is located can be achieved; The reinforcement (2) comprises a corrugated web C-shaped steel, and the open end of one of the corrugated web C-shaped steel in the two adjacent prefabricated plates (1) is arranged toward the other corrugated web C-shaped steel; The prefabricated floor slab further comprises a filling structure (6), which is detachably arranged between the end faces of the shear side (12) of two adjacent prefabricated panels (1) and is located on the reinforcement structure (4).

2. The prefabricated floor slab according to claim 1, characterized in that: The shear side (12) of the prefabricated panel (1) is provided with a first step (14), the top wall of the reinforcing structure (4) is flush with the horizontal surface of the first step (14), and the filling structure (6) is provided between the vertical surfaces of the first steps (14) of two adjacent prefabricated panels (1).

3. The prefabricated floor slab according to claim 1, characterized in that: The overlapping side (11) of the prefabricated panel (1) is provided with a second step (15), and the second step (15) of one of the two adjacent prefabricated panels (1) is provided on the top wall of the prefabricated panel (1), and the second step (15) of the other one is provided on the bottom wall of the prefabricated panel (1), so that the second steps (15) of the two adjacent prefabricated panels (1) are overlapped and connected with each other.

4. A detachable steel-concrete composite floor, characterized in that: include: A frame beam (91), wherein the frame beam (91) defines a plurality of mounting units (92), and a plurality of spaced-apart secondary beams (93) are provided on the frame beam (91), and each secondary beam (93) corresponds to a plurality of mounting units (92) distributed in a vertical direction; A precast floor slab according to any one of claims 1 to 3, wherein the shear sides (12) of two adjacent precast floors (1) of the precast floor slab are arranged on the secondary beam (93), the embedded components of the precast floor slab are detachably arranged on the secondary beam (93), and the precast floor slab is also detachably connected to the frame beam (91).

5. The detachable steel-concrete composite floor according to claim 4, characterized in that: The frame beam (91) defines an internal plate band (95) and a peripheral plate band (94) wrapped around the outer periphery of the internal plate band (95), and the internal plate band (95) and the peripheral plate band (94) both include a plurality of the mounting units (92), and the distribution direction of the plurality of overlapping sides (11) arranged in the internal plate band (95) is parallel to the length direction of the secondary beam (93), and the distribution direction of the plurality of overlapping sides (11) arranged in the peripheral plate band (94) is perpendicular to the length direction of the secondary beam (93).

6. The detachable steel-concrete composite floor according to claim 4, characterized in that: The prefabricated panel (1) further comprises a fixed side (13), a threaded sleeve (81) is pre-embedded in the fixed side (13), the prefabricated panel (1) can be detachably connected to the frame beam (91) via a connection structure (82) threadedly connected to the threaded sleeve (81), and the fixed sides (13) of two adjacent prefabricated panels (1) are spaced apart on the frame beam (91).

7. A construction method for a detachable steel-concrete composite floor, based on the detachable steel-concrete composite floor according to any one of claims 4 to 6, characterized in that: The following steps are involved: S1. Locating the position of the embedded components on the prefabricated slab (1) of the prefabricated floor slab of the detachable steel-concrete composite floor by three-dimensional laser scanning technology; S2, processing the reinforcement member (2), and installing the embedded component in the mold of the prefabricated panel (1); S3, pouring concrete in the mold to form the precast panel (1), pouring a reinforcement structure (4) between two adjacent reinforcement members (2), and numbering the precast panels (1) after production; S4. Accurately locate the installation position of the prefabricated panel (1) installed on the main structure according to the number of the prefabricated panel (1) at the construction site, and apply tightening torque to the embedded components twice; S5. Unscrew the embedded components, remove all prefabricated floor panels from the main structure, and load them onto trucks in order according to the numbers of the prefabricated panels (1) for transportation.

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