An assembled precast floor slab

Abstract

The present invention provides an assembled prefabricated floor slab, which relates to the field of building structure technology. The assembled prefabricated floor slab comprises a concrete enclosure body, a concrete slab is cast at the bottom end of the concrete enclosure body, longitudinal steel bars are installed inside the concrete slab, elbows are installed at both ends of the longitudinal steel bars, transverse steel bars are installed at both ends of the longitudinal steel bars, transverse steel bars are installed at the top end of the longitudinal steel bars, binding heads are installed at both ends of the transverse steel bars, first external frame steel bars are tied at both ends of the transverse steel bars, connecting heads are installed at both ends of the first external frame steel bars, a protective mechanism is provided at the top end of the concrete slab, a positioning plate is cast at the top end of the protective mechanism, second external steel bars are mounted at both ends of the positioning plate, and connecting steel bars are installed at both ends of the second external steel bars. The present invention can accurately align the corresponding prefabricated floor slabs, and at the same time facilitates the movement and later casting of the prefabricated floor slabs, thereby increasing the installation and construction efficiency of the prefabricated floor slabs.

Description

Technical Field

[0001] The present invention relates to the technical field of building structures, and in particular to an assembled prefabricated floor slab. Background Art

[0002] Composite floor slabs are assembled, monolithic slabs made of precast panels and cast-in-place reinforced concrete layers. Composite floor slabs offer advantages such as good integrity, high rigidity, and excellent crack resistance. The smooth upper and lower surfaces of composite floor slabs facilitate finishing, making them suitable for high-rise buildings and large-span buildings that require high rigidity. Currently, most buildings in my country are reinforced concrete structures, which consume a lot of materials and are heavy. Floor slabs, in particular, are often suspended in the middle, resulting in low strength. For this reason, China advocates the use of cast-in-place hollow-core floor slab technology for floor construction. This reduces both material consumption and weight, and this type of floor slab is considered an assembled floor slab.

[0003] Most of the existing prefabricated floor slabs are composed of a combination of steel bars and concrete, and have both high bearing capacity and earthquake resistance. During the installation process, the prefabricated floor slabs are generally hoisted to the top of the building by a crane, and the prefabricated floor slabs are adjusted and installed by construction workers below. After the crane hoists the floor slabs to the top of the building, the construction workers are required to manually align the prefabricated floor slabs with the corresponding prefabricated floor slabs. Due to the heavy weight of the prefabricated floor slabs, it is inconvenient for construction workers to move the prefabricated floor slabs during the adjustment process, and deviations are prone to occur during the positioning and alignment process. The joints are prone to uneven gaps, which reduces shear resistance and increases the risk of leakage. In the long run, it may cause steel corrosion and concrete spalling, increasing the difficulty of later repairs and inconvenience for users. Summary of the Invention

[0004] The present invention provides an assembled prefabricated floor slab to solve the problem that most existing assembled floor slabs are composed of a combination of steel bars and concrete, and have both high bearing capacity and earthquake resistance. During the installation process, the prefabricated floor slab is generally hoisted to the top of the building by a crane, and the prefabricated floor slab is adjusted and installed by construction workers below. After the crane hoists the floor slab to the top of the building, the construction workers are required to manually align the prefabricated floor slab with the corresponding prefabricated floor slab. Due to the heavy weight of the prefabricated floor slab, it is inconvenient for the construction workers to move the prefabricated floor slab during the adjustment process, and deviations are likely to occur during the positioning and alignment process. The joints are prone to uneven width gaps, which reduces shear resistance and increases the risk of leakage. In the long term, it may cause steel corrosion and concrete spalling, increasing the difficulty of later repairs.

[0005] The present invention provides an assembled prefabricated floor slab, comprising a concrete panel body, a concrete slab cast at the bottom end of the concrete panel body, longitudinal steel bars installed inside the concrete slab, elbows installed at both ends of the longitudinal steel bars, transverse steel bar frames installed at both ends of the longitudinal steel bars, transverse steel bars installed at the top ends of the longitudinal steel bars, binding heads installed at both ends of the transverse steel bars, first external frame steel bars tied at both ends of the transverse steel bars, connecting heads installed at both ends of the first external frame steel bars, a protective mechanism provided at the top end of the concrete slab, a positioning plate cast at the top end of the protective mechanism, second external steel bars mounted at both ends of the positioning plate, connecting steel bars installed at both ends of the second external steel bars, adjustment mechanisms installed at both ends of the concrete panel body, and positioning mechanisms installed on both sides of the adjustment mechanism.

[0006] Preferably, the protection mechanism includes a fireproof layer installed on the top of the concrete slab, a heat-insulating layer installed on the top of the fireproof layer, a sound-insulating layer installed on the top of the heat-insulating layer, and a waterproof layer installed on the top of the sound-insulating layer.

[0007] Preferably, a truss steel bar is installed on the top of the positioning plate, reinforcing ribs are installed on both sides of the truss steel bar, a mounting plate is fixed to the bottom end of the truss steel bar, the internal thread of the mounting plate is connected to a positioning screw, and a concrete layer is poured on the top of the positioning plate.

[0008] Preferably, the adjustment mechanism includes fixed horizontal plates installed at both ends of the concrete enclosure body, one end of the fixed horizontal plate is provided with a socket, the internal thread of the socket is connected to a fixing screw, and a fixed vertical plate is installed on one side of the fixed horizontal plate.

[0009] Preferably, a positioning turntable is installed at the top of the fixed horizontal plate, a rotating rod is installed at the top of the positioning turntable, an adjusting screw is installed at the bottom end of the positioning turntable, a positioning bearing is installed at the bottom end of the adjusting screw, a connecting plate is fixed to the bottom end of the positioning bearing, a connecting cross bar is installed at both ends of the connecting plate, a fixing block is installed at both ends of the connecting cross bar, a connecting shaft is installed at the bottom end of the fixing block, the bottom end of the connecting shaft is connected to the mounting shaft, a horizontal adjusting wheel is installed on the outer wall of the mounting shaft, and a limiting sliding groove is provided on one side of the fixed vertical plate.

[0010] Preferably, L-shaped adjustment frames are installed at both ends of the concrete enclosure body, a positioning hole is opened on one side of the L-shaped adjustment frame, the internal thread of the positioning hole is connected to a mounting screw, a longitudinal adjustment wheel is installed at one end of the L-shaped adjustment frame, and an adjustment turntable is installed at the top of the L-shaped adjustment frame.

[0011] Preferably, the positioning mechanism includes a transverse laser locator installed at one end of a fixed horizontal plate, a transverse positioning ring is provided at the end of the fixed horizontal plate away from the transverse laser locator, a positioning slot is provided at one end of the fixed vertical plate, and a positioning protrusion is installed at one end of the fixed vertical plate.

[0012] Preferably, a longitudinal laser locator is installed at one end of the L-shaped adjustment frame, a longitudinal positioning ring is provided at the end of the L-shaped adjustment frame away from the longitudinal laser locator, a groove is provided at one end of the L-shaped adjustment frame, and a convex plate is installed at one end of the L-shaped adjustment frame.

[0013] Preferably, the concrete enclosure body, concrete slab, positioning plate and concrete layer are all concrete structures, and the longitudinal steel bars and transverse steel bars can make the structure of the concrete slab more solid and stable, improve the bearing capacity and extend the service life.

[0014] Preferably, the transverse steel bar frame, the first external frame steel bar and the second external steel bar extend out of the concrete enclosure body. The transverse steel bar frame, the first external frame steel bar and the second external steel bar do not need to be further tied after the concrete enclosure body is installed, thereby increasing construction efficiency.

[0015] Beneficial effects

[0016] 1. The present invention improves the fire resistance, sound insulation, thermal insulation, and waterproof properties of the concrete enclosure body by installing a protective mechanism inside the concrete enclosure body. After the concrete slab is poured, a fireproof layer, thermal insulation layer, sound insulation layer, and waterproof layer are installed on top of the concrete slab. The fireproof layer is made of gypsum and cardboard, which releases water vapor in the event of fire to slow the spread of fire and is used for fire protection of walls or ceilings. The thermal insulation layer is made of rock wool board, an inorganic Class A non-combustible material with both thermal insulation and fireproof properties, suitable for building exterior walls and industrial equipment. The sound insulation layer is made of glass wool, whose fiber structure can effectively absorb sound waves while ensuring both thermal insulation and fireproof properties. The waterproof layer is made of asphalt membrane, which is water-resistant and corrosion-resistant.

[0017] 2. When installing the concrete hoisting panel body, the present invention uses an adjustment mechanism to adjust and align the left and right positions of the concrete slabs. During the installation process, the concrete hoisting panel body is hoisted by a crane. After the concrete hoisting panel body is moved to the roof by the crane, the construction personnel move the concrete hoisting panel body to a suitable installation location. Subsequently, the hook connecting the top of the concrete hoisting panel body to the crane is removed. At this time, the horizontal laser locator and the vertical laser locator are turned on respectively to observe whether the laser is irradiated into the corresponding horizontal positioning circle and the vertical positioning circle, and the position of the concrete hoisting panel body is adjusted according to the deviation. When the position of the concrete hoisting panel body needs to be adjusted horizontally, the longitudinal adjustment wheel can be moved upward by first rotating the adjustment dials on both sides until the longitudinal adjustment wheel is no longer in contact with the floor. At this time, the horizontal adjustment wheels at both ends will be in contact with the floor. When the concrete hoisting panel is in contact with the floor, it is convenient for the user to push the concrete hoisting panel body to move. Since the concrete hoisting panel body itself is heavy, the concrete hoisting panel body can be easily moved for horizontal movement and alignment under the action of multiple sets of horizontal adjustment wheels. When the concrete hoisting panel body needs to be moved longitudinally, the horizontal adjustment wheels at both ends can be moved upward by rotating the rotating rod and the positioning turntable, so that the longitudinal adjustment wheels on both sides are in contact with the floor. At this time, the user can easily adjust and align the concrete hoisting panel body longitudinally. The aligned installation ensures that the precast floor slab fits precisely with the supporting structure, avoids local stress concentration due to misalignment, and thus improves the overall bearing capacity and seismic performance of the floor slab. At the same time, after the precast bottom plate is aligned, the cast-in-place concrete can evenly cover the joint area, thereby enhancing the bonding strength of the precast and cast-in-place parts and achieving a double improvement in rigidity and flatness.

[0018] 3. When adjusting the concrete panel body, the present invention uses a positioning mechanism to adjust and position the concrete panel body. Before adjusting the horizontal and vertical positions of the concrete panel body, the horizontal laser positioner and the vertical laser positioner are respectively turned on. When the concrete panel body is moved, it is observed whether the lasers of the corresponding horizontal laser positioner and the vertical laser positioner enter the corresponding horizontal positioning circle and the vertical positioning circle. When the lasers enter the corresponding horizontal positioning circle and the vertical positioning circle, it indicates that the corresponding concrete panel body is aligned. The edges of the prefabricated floor slabs are neat and the sizes are uniform. After alignment, they can be directly fixed through reserved holes or flexible connections, which can simplify the node processing process.

[0019] 4. During the manufacturing process of the present invention, longitudinal and transverse steel bars are implanted inside the concrete slab. The concrete enclosure body, concrete slab, positioning plate and concrete layer are all concrete structures. The longitudinal and transverse steel bars can make the structure of the concrete slab more solid and stable, improve the bearing capacity and extend the service life. When the concrete slab is subjected to tension, the longitudinal and transverse steel bars share the tension through the bonding force, effectively inhibiting the cracking of the concrete slab and ensuring the integrity and safety of the structure. At the same time, the longitudinal and transverse steel bars cooperate with the concrete slab to bear the force, forming a rigid skeleton, which can evenly transfer the load and reduce stress concentration, thereby improving the stability of the building under dynamic loads such as wind and earthquakes and increasing the service strength of the concrete slab.

[0020] 5. After the present invention is used and installed, there is no need to re-tie the steel bars on the side, which greatly improves the installation efficiency. After the corresponding concrete panel body is aligned and installed, the fixed cross plate and the L-shaped adjustment frame are disassembled by respectively removing the fixing screws and the installation screws. At this time, the steel bars on the four sides of the concrete panel body will be exposed. The user only needs to tie the corresponding steel bars, and the user does not need to tie the side steel bars again, which increases the construction efficiency. The pouring operation can be completed by directly pouring concrete on the four sides of the concrete panel body. The steel bars tied at the joints of the prefabricated panels can fill the joint gaps, and form a continuous force-bearing structure with the cast-in-place concrete, which effectively improves the shear resistance and waterproof performance of the joints.

[0021] The above description is only an overview of the technical solutions of the embodiments of the present invention. In order to more clearly understand the technical means of the embodiments of the present invention, they can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiments of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 This is a schematic diagram of the structure of an assembled prefabricated floor slab after splicing according to the present invention.

[0024] Figure 2 This is a schematic diagram of the overall structure of an assembled prefabricated floor slab of the present invention.

[0025] Figure 3 This is a schematic diagram of the main structure of a concrete enclosure of an assembled prefabricated floor slab of the present invention.

[0026] Figure 4 This is a schematic diagram of the internal structure of the concrete enclosure body of an assembled prefabricated floor slab of the present invention.

[0027] Figure 5 This is a schematic diagram of the internal structure of a concrete slab of an assembled prefabricated floor slab of the present invention.

[0028] Figure 6 This is a schematic diagram of the lower end structure of the concrete layer of an assembled prefabricated floor slab of the present invention.

[0029] Figure 7 This is a schematic structural diagram of a protective mechanism for an assembled prefabricated floor slab according to the present invention.

[0030] Figure 8 This is a schematic diagram of the truss reinforcement installation structure of an assembled prefabricated floor slab of the present invention.

[0031] Figure 9 This is a schematic diagram of the installation structure of an adjustment mechanism of an assembled prefabricated floor slab according to the present invention.

[0032] Figure 10 This is a schematic structural diagram of an adjustment mechanism for an assembled prefabricated floor slab according to the present invention.

[0033] Figure 11 This is a schematic diagram of the installation structure of a transverse adjustment wheel of an assembled prefabricated floor slab according to the present invention.

[0034] Figure 12 This is a schematic diagram of the installation structure of an adjusting screw of an assembled prefabricated floor slab according to the present invention.

[0035] Figure 13 The figure is a schematic structural diagram of a positioning mechanism of an assembled prefabricated floor slab according to the present invention.

[0036] Figure 14 This is a schematic diagram of the longitudinal adjustment wheel structure of an assembled prefabricated floor slab of the present invention.

[0037] Description of reference numerals:

[0038] 1. Concrete panel body; 2. Concrete panel; 3. Longitudinal reinforcement; 4. Elbow; 5. Horizontal reinforcement frame; 6. Tie head; 7. First outer frame reinforcement; 8. Connector; 9. Protective mechanism; 901. Fireproof layer; 902. Insulation layer; 903. Sound insulation layer; 904. Waterproof layer; 10. Positioning plate; 11. Truss reinforcement; 12. Reinforcement ribs; 13. Mounting plate; 14. Positioning screw; 15. Second outer reinforcement; 16. Connecting reinforcement; 17. Concrete layer; 18. Adjustment mechanism; 1801. Fixed horizontal plate; 1802. Socket; 1803. Fixed screw; 1804. Fixed vertical plate; 1805. Positioning turntable; 1806. Turning rod; 180 7. Adjusting screw; 1808. Positioning bearing; 1809. Connecting plate; 1810. Connecting cross bar; 1811. Fixing block; 1812. Connecting shaft; 1813. Mounting shaft; 1814. Horizontal adjusting wheel; 1815. Limiting slide; 1816. L-shaped adjusting frame; 1817. Positioning hole; 1819. Longitudinal adjusting wheel; 1820. Adjusting dial; 19. Positioning mechanism; 1901. Horizontal laser locator; 1902. Horizontal positioning ring; 1903. Positioning slot; 1904. Positioning protrusion; 1905. Longitudinal laser locator; 1906. Longitudinal positioning ring; 1907. Groove; 1908. Protruding plate; 20. Horizontal reinforcement. DETAILED DESCRIPTION

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs; the terms used in the description of the invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the description, claims and accompanying drawings of the present invention are intended to cover non-exclusive inclusions.

[0041] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] The directional words appearing in the following description are all directions shown in the drawings and are not intended to limit the specific structure of the present invention. For example, in the description of the present invention, 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., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through a screw, bolt, or other fixing member; the physical connection may also be a detachable connection, such as a mutual snap connection or a snap connection; the physical connection may also be an integral connection, such as a connection formed by welding, bonding, or integral molding. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0045] The present invention provides Figure 1-14The assembled prefabricated floor slab shown in the figure comprises a concrete panel body 1, a concrete panel 2 is cast at the bottom end of the concrete panel body 1, a longitudinal steel bar 3 is installed inside the concrete panel 2, elbows 4 are installed at both ends of the longitudinal steel bar 3, and transverse steel bar frames 5 are installed at both ends of the longitudinal steel bar 3. Transverse steel bars 20 are installed at the top of the longitudinal steel bar 3, and binding heads 6 are installed at both ends of the transverse steel bar 20. The two ends of the transverse steel bar 20 are tied with first external frame steel bars 7, and the two ends of the first external frame steel bar 7 are installed with connecting heads 8. A protective mechanism 9 is provided at the top of the concrete panel 2, and a positioning plate 10 is cast at the top of the protective mechanism 9. A second external steel bar 15 is mounted at both ends of the positioning plate 10, and connecting steel bars 16 are installed at both ends of the second external steel bar 15. An adjusting mechanism 18 is installed at the end, and positioning mechanisms 19 are installed on both sides of the adjusting mechanism 18. During the installation process of the present invention, the concrete enclosure body 1 is hoisted by a crane. After the concrete enclosure body 1 is moved to the roof by the crane, the construction workers move the concrete enclosure body 1 to a suitable installation location, and then remove the hook connected to the top of the concrete enclosure body 1 and the crane. At this time, by turning on the horizontal laser locator 1901 and the vertical laser locator 1905 respectively, observe whether the laser is irradiated into the corresponding horizontal positioning circle 1902 and the vertical positioning circle 1906, and adjust the position of the concrete enclosure body 1 according to the deviation. When the position of the concrete enclosure body 1 needs to be adjusted horizontally, it can be done by first rotating the two The adjusting dial 1820 on the side causes the longitudinal adjusting wheel 1819 to move upward until the longitudinal adjusting wheel 1819 is no longer in contact with the floor. At this time, the transverse adjusting wheels 1814 at both ends will be in contact with the floor, which makes it convenient for the user to push the concrete enclosure body 1 to move. Since the concrete enclosure body 1 itself is heavy, the concrete enclosure body 1 can be easily moved for transverse alignment under the action of multiple sets of transverse adjusting wheels 1814. When the concrete enclosure body 1 needs to be moved longitudinally, the transverse adjusting wheels 1814 at both ends can be moved upward by rotating the rotating rod 1806 and the positioning dial 1805, so that the longitudinal adjusting wheels 1819 on both sides are in contact with the floor. At this time, the user can easily adjust the concrete enclosure body 1 The slab body 1 is longitudinally adjusted and aligned, and the alignment and installation ensure that the precast floor slab is precisely matched with the supporting structure such as beams and walls, avoiding local stress concentration due to misalignment, thereby improving the overall bearing capacity and seismic performance of the floor slab. At the same time, after the precast base plate is aligned, the cast-in-place concrete can evenly cover the joint area, enhancing the bonding strength of the precast and cast-in-place parts, and achieving a dual improvement in rigidity and flatness. Before adjusting the transverse and longitudinal positions of the concrete enclosure body 1, by turning on the transverse laser locator 1901 and the longitudinal laser locator 1905 respectively, when moving the concrete enclosure body 1, observe whether the lasers of the corresponding transverse laser locator 1901 and the longitudinal laser locator 1905 are shot into the corresponding transverse positioning circle 1902 and the longitudinal positioning circle 1906.When the laser is shot into the corresponding horizontal positioning circle 1902 and the longitudinal positioning circle 1906, it means that the corresponding concrete enclosure body 1 is in an aligned state. The edges of the prefabricated floor slabs are neat and uniform in size. After alignment, they can be directly fixed through reserved holes or flexible connections, which can simplify the node processing process. At the same time, the interior of the concrete enclosure body 1 includes a protective mechanism 9. After the concrete slab 2 is poured, the fireproof layer 901, the thermal insulation layer 902, the sound insulation layer 903 and the waterproof layer 904 are installed on the top of the concrete slab 2 respectively. The fireproof layer 901 is made of gypsum and cardboard, and is released when it encounters fire. Water vapor slows down the spread of fire and is used for fire protection of walls or ceilings. The insulation layer 902 is made of rock wool board, which is an inorganic Class A non-combustible material with both thermal insulation and fire resistance, and is suitable for building exterior walls and industrial equipment. The sound insulation layer 903 is made of glass wool, and its fiber structure can effectively absorb sound waves while taking into account both thermal insulation and fire resistance. The waterproof layer 904 is asphalt roll material, which is water-resistant and corrosion-resistant. By implanting longitudinal steel bars 3 and transverse steel bars 20 inside the concrete slab 2, the concrete enclosure body 1, concrete slab 2, positioning plate 10 and concrete layer 17 are all concrete structures. The longitudinal steel bars 3 and transverse steel bars The reinforcement 20 can make the structure of the concrete slab 2 more solid and stable, improve the bearing capacity and extend the service life. When the concrete slab 2 is pulled, the longitudinal reinforcement 3 and the transverse reinforcement 20 share the tension through the bonding force, effectively inhibiting the cracking of the concrete slab 2 and ensuring the integrity and safety of the structure. At the same time, the longitudinal reinforcement 3 and the transverse reinforcement 20 cooperate with the concrete slab 2 to bear the force, forming a rigid skeleton, which can evenly transfer the load and reduce stress concentration, improve the stability of the building under dynamic loads such as wind and earthquake, increase the service strength of the concrete slab 2, and after the corresponding concrete enclosure body 1 is aligned and installed By removing the fixing screws 1803 and the installation screws respectively, the fixed horizontal plate 1801 and the L-shaped adjustment frame 1816 can be removed. At this time, the steel bars on the four sides of the concrete enclosure body 1 will be exposed. The user only needs to tie the corresponding steel bars, and there is no need to tie the side steel bars again, which increases construction efficiency. The pouring operation can be completed by directly pouring concrete on the four sides of the concrete enclosure body 1. The tied steel bars at the joints of the precast panels can fill the joint gaps and form a continuous load-bearing structure with the cast-in-place concrete, effectively improving the shear resistance and waterproof performance of the joints.

[0046] This solution increases the fire resistance, sound insulation, heat preservation and waterproof properties of the concrete enclosure body 1 by installing a protective mechanism 9 inside the concrete enclosure body 1. The protective mechanism 9 includes a fireproof layer 901 installed on the top of the concrete slab 2, a heat preservation layer 902 installed on the top of the fireproof layer 901, a sound insulation layer 903 installed on the top of the heat preservation layer 902, and a waterproof layer 904 installed on the top of the sound insulation layer 903. After the concrete slab 2 is poured, the fireproof layer 901, the heat preservation layer 902, the heat preservation layer 903 and the waterproof layer 904 are installed. The sound insulation layer 903 and waterproof layer 904 are installed on top of the concrete slab 2. The fireproof layer 901 is made of gypsum and cardboard. When exposed to fire, it releases water vapor to slow the fire and is used for wall or ceiling fire protection. The thermal insulation layer 902 is made of rock wool board, an inorganic Class A non-combustible material with both thermal insulation and fireproof properties, suitable for building exterior walls and industrial equipment. The sound insulation layer 903 is made of glass wool, whose fiber structure can effectively absorb sound waves while taking into account both thermal insulation and fireproof properties. The waterproof layer 904 is asphalt membrane, which is water-resistant and corrosion-resistant.

[0047] When this solution is in use, the truss steel bars 11 are installed inside the concrete layer 17, and the positioning plate 10 increases the installation stability of the truss steel bars 11. The truss steel bars 11 are installed at the top of the positioning plate 10, and reinforcing ribs 12 are installed on both sides of the truss steel bars 11. The bottom end of the truss steel bars 11 is fixed with a mounting plate 13, and the internal thread of the mounting plate 13 is connected with a positioning screw 14. The top of the positioning plate 10 is cast with a concrete layer 17, wherein the truss steel bars 11 are installed on the top of the positioning plate 10 through the mounting plate 13 and the positioning screw 14. The positioning plate 10 is cast with concrete, and then the concrete layer 17 is cast on the top of the positioning plate 10, and the truss steel bars 11 are fixed to the top of the positioning plate 10 through the mounting plate 13 and the positioning screw 14. The cast concrete layer 17 makes the truss steel bars 11 more stable, and the truss steel bars 11 can increase the strength of the concrete layer 17.

[0048] When the concrete panel body 1 is installed, the concrete panel 2 is adjusted and aligned left and right by the adjustment mechanism 18. The adjustment mechanism 18 includes a fixed horizontal plate 1801 installed at both ends of the concrete panel body 1. One end of the fixed horizontal plate 1801 is provided with a socket 1802. The internal thread of the socket 1802 is connected with a fixed screw 1803. A fixed vertical plate 1804 is installed on one side of the fixed horizontal plate 1801. A positioning turntable 1805 is installed on the top of the fixed horizontal plate 1801. A rotating rod 1806 is installed on the top of the positioning turntable 1805. An adjusting screw 1807 is installed at the bottom end of the adjusting screw 1807, a positioning bearing 1808 is installed at the bottom end of the positioning bearing 1808, a connecting plate 1809 is fixed to the bottom end of the positioning bearing 1808, connecting cross bars 1810 are installed at both ends of the connecting cross bars 1810, fixing blocks 1811 are installed at both ends of the connecting cross bars 1810, a connecting shaft 1812 is installed at the bottom end of the fixing block 1811, the bottom end of the connecting shaft 1812 is connected to the mounting shaft 1813, a horizontal adjusting wheel 1814 is installed on the outer wall of the mounting shaft 1813, and a limiting slide groove 1815 is provided on one side of the fixed vertical plate 1804.L-shaped adjustment frames 1816 are installed at both ends of the concrete enclosure body 1, and a positioning hole 1817 is opened on one side of the L-shaped adjustment frame 1816. The internal thread of the positioning hole 1817 is connected to the installation screw. A longitudinal adjustment wheel 1819 is installed at one end of the L-shaped adjustment frame 1816, and an adjustment dial 1820 is installed on the top of the L-shaped adjustment frame 1816. During the installation process, the concrete enclosure body 1 is hoisted by a crane. After the concrete enclosure body 1 is moved to the roof by the crane, the construction workers move the concrete enclosure body 1 to the top of the building. The main body 1 is moved to a suitable installation location, and then the hook connected to the crane at the top of the concrete enclosure body 1 is removed. At this time, the horizontal laser locator 1901 and the vertical laser locator 1905 are opened respectively to observe whether the laser is irradiated into the corresponding horizontal positioning circle 1902 and the vertical positioning circle 1906, and the position of the concrete enclosure body 1 is adjusted according to the deviation. When the position of the concrete enclosure body 1 needs to be adjusted horizontally, the adjustment dials 1820 on both sides can be turned first to adjust the vertical adjustment wheel 181. 9 moves upward until the longitudinal adjustment wheel 1819 is no longer in contact with the floor. At this time, the transverse adjustment wheels 1814 at both ends will be in contact with the floor, which makes it convenient for the user to push the concrete panel body 1 to move. Since the concrete panel body 1 itself is heavy, the concrete panel body 1 can be easily moved for transverse alignment under the action of multiple sets of transverse adjustment wheels 1814. When the concrete panel body 1 needs to be moved longitudinally, the transverse adjustment wheels 1814 at both ends can be moved upward by rotating the rotating rod 1806 and the positioning turntable 1805, so that the longitudinal adjustment wheels 1819 on both sides are in contact with the floor. At this time, the user can easily perform longitudinal adjustment and alignment operations on the concrete panel body 1. The aligned installation ensures that the precast floor slab is precisely matched with the supporting structure such as beams and walls, avoiding local stress concentration due to misalignment, thereby improving the overall bearing capacity and seismic performance of the floor slab. At the same time, after the precast bottom plate is aligned, the cast-in-place concrete can evenly cover the joint area, thereby enhancing the bonding strength of the precast and cast-in-place parts, and achieving a dual improvement in rigidity and flatness.

[0049] When adjusting the concrete enclosure body 1, the present invention uses a positioning mechanism 19 to adjust and position the concrete enclosure body 1. The positioning mechanism 19 includes a transverse laser locator 1901 installed at one end of the fixed horizontal plate 1801, a transverse positioning ring 1902 is provided at the end of the fixed horizontal plate 1801 away from the transverse laser locator 1901, a positioning slot 1903 is provided at one end of the fixed vertical plate 1804, a positioning protrusion 1904 is installed at one end of the fixed vertical plate 1804, a longitudinal laser locator 1905 is installed at one end of the L-shaped adjustment frame 1816, a longitudinal positioning ring 1906 is provided at the end of the L-shaped adjustment frame 1816 away from the longitudinal laser locator 1905, and a groove 1906 is provided at one end of the L-shaped adjustment frame 1816. 07. A convex plate 1908 is installed at one end of the L-shaped adjustment frame 1816. Before adjusting the horizontal and vertical positions of the concrete enclosure body 1, the horizontal laser locator 1901 and the vertical laser locator 1905 are opened respectively. When the concrete enclosure body 1 is moved, it is observed whether the lasers of the corresponding horizontal laser locator 1901 and the vertical laser locator 1905 are shot into the corresponding horizontal positioning circle 1902 and the vertical positioning circle 1906. When the lasers are shot into the corresponding horizontal positioning circle 1902 and the vertical positioning circle 1906, it indicates that the corresponding concrete enclosure body 1 is in an aligned state, the edges of the prefabricated floor slabs are neat and the sizes are uniform. After alignment, they can be directly fixed through reserved holes or flexible connections, which can simplify the node processing process.

[0050] During the manufacturing process of this solution, longitudinal steel bars 3 and transverse steel bars 20 are implanted inside the concrete slab 2. The concrete enclosure body 1, concrete slab 2, positioning plate 10 and concrete layer 17 are all concrete structures. The longitudinal steel bars 3 and transverse steel bars 20 can make the structure of the concrete slab 2 more solid and stable, improve the bearing capacity and extend the service life. When the concrete slab 2 is subjected to tension, the longitudinal steel bars 3 and transverse steel bars 20 share the tension through bonding force, effectively inhibiting the cracking of the concrete slab 2 and ensuring the integrity and safety of the structure. At the same time, the longitudinal steel bars 3 and transverse steel bars 20 cooperate with the concrete slab 2 to bear force, forming a rigid skeleton, which can evenly transfer loads and reduce stress concentration, thereby improving the stability of the building under dynamic loads such as wind and earthquakes and increasing the service strength of the concrete slab 2.

[0051] After the installation of this solution is completed, there is no need to re-tie the side steel bars, which greatly improves the installation efficiency. The horizontal steel bar frame 5, the first external frame steel bar 7 and the second external steel bar 15 extend out of the concrete enclosure body 1. The horizontal steel bar frame 5, the first external frame steel bar 7 and the second external steel bar 15 do not need to be tied after the installation of the concrete enclosure body 1 is completed, which increases construction efficiency. After the corresponding concrete enclosure body 1 is aligned and installed, the fixed horizontal plate 1801 and the L-shaped adjustment frame 1816 are disassembled by removing the fixing screws 1803 and the installation screws respectively. At this time, the steel bars on the four sides of the concrete enclosure body 1 will be exposed. The user only needs to tie the corresponding steel bars, and the user does not need to tie the side steel bars again, which increases construction efficiency. The pouring operation can be completed by directly pouring concrete on the four sides of the concrete enclosure body 1. The steel bars tied at the joints of the prefabricated panels can fill the joint gaps, and form a continuous force-bearing structure with the cast-in-place concrete, effectively improving the shear resistance and waterproof performance of the joints.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An assembled prefabricated floor slab, comprising a concrete panel body (1), characterized in that: A concrete slab (2) is cast at the bottom end of the concrete enclosure body (1), longitudinal steel bars (3) are installed inside the concrete slab (2), elbows (4) are installed at both ends of the longitudinal steel bars (3), transverse steel bars (5) are installed at both ends of the longitudinal steel bars (3), transverse steel bars (20) are installed at the top end of the longitudinal steel bars (3), binding heads (6) are installed at both ends of the transverse steel bars (20), first external frame steel bars (7) are tied to both ends of the transverse steel bars (20), and connecting heads (8) are installed at both ends of the first external frame steel bars (7), a protective mechanism (9) is provided at the top end of the concrete slab (2), a positioning plate (10) is cast at the top end of the protective mechanism (9), second external steel bars (15) are mounted at both ends of the positioning plate (10), and connecting steel bars (16) are installed at both ends of the second external steel bars (15), and an adjustment mechanism (18) is installed at both ends of the concrete enclosure body (1), and the adjustment mechanism (18) ) are provided with positioning mechanisms (19) on both sides, the adjustment mechanism (18) comprises fixed transverse plates (1801) installed at both ends of the concrete enclosure body (1), a positioning turntable (1805) is installed at the top end of the fixed transverse plate (1801), an adjustment screw (1807) is installed at the bottom end of the positioning turntable (1805), an L-shaped adjustment frame (1816) is installed at both ends of the concrete enclosure body (1), and one end of the L-shaped adjustment frame (1816) is installed. A longitudinal adjustment wheel (1819), the positioning mechanism (19) includes a transverse laser locator (1901) mounted on one end of a fixed transverse plate (1801), a transverse positioning ring (1902) is provided at one end of the fixed transverse plate (1801) away from the transverse laser locator (1901), a longitudinal laser locator (1905) is mounted on one end of the L-shaped adjustment frame (1816), and a convex plate (1908) is mounted on one end of the L-shaped adjustment frame (1816).

2. The prefabricated floor slab according to claim 1, characterized in that: The protective mechanism (9) comprises a fireproof layer (901) installed on the top of the concrete slab (2), a thermal insulation layer (902) installed on the top of the fireproof layer (901), a sound insulation layer (903) installed on the top of the thermal insulation layer (902), and a waterproof layer (904) installed on the top of the sound insulation layer (903).

3. The prefabricated floor slab according to claim 1, characterized in that: A truss steel bar (11) is installed at the top of the positioning plate (10), and reinforcing ribs (12) are installed on both sides of the truss steel bar (11). A mounting plate (13) is fixed to the bottom end of the truss steel bar (11), and a positioning screw (14) is connected to the internal thread of the mounting plate (13). A concrete layer (17) is poured on the top of the positioning plate (10).

4. The prefabricated floor slab according to claim 1, characterized in that: One end of the fixed horizontal plate (1801) is provided with a socket (1802), the internal thread of the socket (1802) is connected to a fixed screw (1803), and one side of the fixed horizontal plate (1801) is installed with a fixed vertical plate (1804).

5. The prefabricated floor slab according to claim 1, characterized in that: A rotating rod (1806) is installed at the top end of the positioning turntable (1805), a positioning bearing (1808) is installed at the bottom end of the adjusting screw (1807), a connecting plate (1809) is fixed to the bottom end of the positioning bearing (1808), a connecting cross bar (1810) is installed at both ends of the connecting plate (1809), a fixing block (1811) is installed at both ends of the connecting cross bar (1810), a connecting shaft (1812) is installed at the bottom end of the fixing block (1811), the bottom end of the connecting shaft (1812) is connected to the installation shaft (1813), and a transverse adjustment wheel (1814) is installed on the outer wall of the installation shaft (1813).

6. The prefabricated floor slab according to claim 1, characterized in that: A positioning hole (1817) is provided on one side of the L-shaped adjustment frame (1816), an internal thread of the positioning hole (1817) is connected to a mounting screw, and an adjustment dial (1820) is installed at the top end of the L-shaped adjustment frame (1816).

7. The prefabricated floor slab according to claim 4, characterized in that: A positioning slot (1903) is provided at one end of the fixed vertical plate (1804), a positioning protrusion (1904) is installed at one end of the fixed vertical plate (1804), and a limiting sliding groove (1815) is provided at one side of the fixed vertical plate (1804).

8. The prefabricated floor slab according to claim 1, characterized in that: A longitudinal positioning ring (1906) is provided at one end of the L-shaped adjustment frame (1816) away from the longitudinal laser locator (1905), and a groove (1907) is provided at one end of the L-shaped adjustment frame (1816).

9. The prefabricated floor slab according to claim 1, characterized in that: The concrete enclosure body (1), concrete slab (2), positioning plate (10) and concrete layer (17) are all concrete structures. The longitudinal steel bars (3) and transverse steel bars (20) can make the structure of the concrete slab (2) more solid and stable, improve the bearing capacity and extend the service life.

10. The prefabricated floor slab according to claim 1, characterized in that: The transverse reinforcement frame (5), the first external reinforcement frame (7), and the second external reinforcement frame (15) extend out of the concrete enclosure body (1). The transverse reinforcement frame (5), the first external reinforcement frame (7), and the second external reinforcement frame (15) do not need to be further tied after the concrete enclosure body (1) is installed, thereby increasing construction efficiency.

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